/*
-Copyright(c)2008 Internet Archive. Software license AGPL version 3.
+Copyright(c)2008-2009 Internet Archive. Software license AGPL version 3.
This file is part of GnuBook.
The GnuBook source is hosted at http://github.com/openlibrary/bookreader/
- archive.org cvs $Revision: 1.69 $ $Date: 2009-04-01 22:00:51 $
+ archive.org cvs $Revision: 1.2 $ $Date: 2009-06-22 18:42:51 $
*/
// GnuBook()
function GnuBook() {
this.reduce = 4;
this.padding = 10;
- this.mode = 1; //1 or 2
-
- this.displayedLeafs = [];
- //this.leafsToDisplay = [];
+ this.mode = 1; //1, 2, 3
+ this.ui = 'full'; // UI mode
+ this.thumbScale = 10; // thumbnail default
+
+ this.displayedIndices = [];
+ this.displayedRows=[];
+ //this.indicesToDisplay = [];
this.imgs = {};
- this.prefetchedImgs = {}; //an object with numeric keys cooresponding to leafNum
+ this.prefetchedImgs = {}; //an object with numeric keys cooresponding to page index
this.timer = null;
this.animating = false;
this.twoPagePopUp = null;
this.leafEdgeTmp = null;
this.embedPopup = null;
-
+
this.searchResults = {};
this.firstIndex = null;
// We link to index.php to avoid redirect which breaks back button
this.logoURL = 'http://www.archive.org/index.php';
+ // Base URL for images
+ this.imagesBaseURL = '/bookreader/images/';
+
+ // Mode constants
+ this.constMode1up = 1;
+ this.constMode2up = 2;
+ this.constModeThumb = 3;
+
+ // Zoom levels
+ this.reductionFactors = [0.5, 1, 2, 4, 8, 16];
+
+ // Object to hold parameters related to 2up mode
+ this.twoPage = {
+ coverInternalPadding: 10, // Width of cover
+ coverExternalPadding: 10, // Padding outside of cover
+ bookSpineDivWidth: 30, // Width of book spine $$$ consider sizing based on book length
+ autofit: true
+ };
};
// init()
//______________________________________________________________________________
GnuBook.prototype.init = function() {
- var startLeaf = window.location.hash;
- //console.log("startLeaf from location.hash: %s", startLeaf);
- if ('' == startLeaf) {
- if (this.titleLeaf) {
- startLeaf = "#" + this.leafNumToIndex(this.titleLeaf);
+
+ var startIndex = undefined;
+ this.pageScale = this.reduce; // preserve current reduce
+
+ // Find start index and mode if set in location hash
+ var params = this.paramsFromFragment(window.location.hash);
+
+ if ('undefined' != typeof(params.index)) {
+ startIndex = params.index;
+ } else if ('undefined' != typeof(params.page)) {
+ startIndex = this.getPageIndex(params.page);
+ }
+
+ if ('undefined' == typeof(startIndex)) {
+ if ('undefined' != typeof(this.titleLeaf)) {
+ startIndex = this.leafNumToIndex(this.titleLeaf);
}
}
- // Ideally this would be set in the HTML/PHP for better search engine visibility but
- // it takes some time to locate the item and retrieve the metadata
+ if ('undefined' == typeof(startIndex)) {
+ startIndex = 0;
+ }
+
+ if ('undefined' != typeof(params.mode)) {
+ this.mode = params.mode;
+ }
+
+ // Set document title -- may have already been set in enclosing html for
+ // search engine visibility
document.title = this.shortTitle(50);
+ // Sanitize parameters
+ if ( !this.canSwitchToMode( this.mode ) ) {
+ this.mode = this.constMode1up;
+ }
+
$("#GnuBook").empty();
- this.initToolbar(this.mode); // Build inside of toolbar div
+ this.initToolbar(this.mode, this.ui); // Build inside of toolbar div
$("#GnuBook").append("<div id='GBcontainer'></div>");
$("#GBcontainer").append("<div id='GBpageview'></div>");
});
this.setupKeyListeners();
+ this.startLocationPolling();
$(window).bind('resize', this, function(e) {
//console.log('resize!');
//console.log('centering 1page view');
e.data.centerPageView();
$('#GBpageview').empty()
- e.data.displayedLeafs = [];
+ e.data.displayedIndices = [];
e.data.updateSearchHilites(); //deletes hilights but does not call remove()
e.data.loadLeafs();
+ } else if (3 == e.data.mode){
+ e.data.prepareThumbnailView();
} else {
//console.log('drawing 2 page view');
- e.data.prepareTwoPageView();
+
+ // We only need to prepare again in autofit (size of spread changes)
+ if (e.data.twoPage.autofit) {
+ e.data.prepareTwoPageView();
+ } else {
+ // Re-center if the scrollbars have disappeared
+ var center = e.data.twoPageGetViewCenter();
+ var doRecenter = false;
+ if (e.data.twoPage.totalWidth < $('#GBcontainer').attr('clientWidth')) {
+ center.percentageX = 0.5;
+ doRecenter = true;
+ }
+ if (e.data.twoPage.totalHeight < $('#GBcontainer').attr('clientHeight')) {
+ center.percentageY = 0.5;
+ doRecenter = true;
+ }
+ if (doRecenter) {
+ e.data.twoPageCenterView(center.percentageX, center.percentageY);
+ }
+ }
}
});
$('.GBpagediv1up').bind('mousedown', this, function(e) {
- //console.log('mousedown!');
+ // $$$ the purpose of this is to disable selection of the image (makes it turn blue)
+ // but this also interferes with right-click. See https://bugs.edge.launchpad.net/gnubook/+bug/362626
});
if (1 == this.mode) {
this.resizePageView();
-
- if ('' != startLeaf) { // Jump to the leaf specified in the URL
- this.jumpToIndex(parseInt(startLeaf.substr(1)));
- //console.log('jump to ' + parseInt(startLeaf.substr(1)));
- }
- } else {
+ this.firstIndex = startIndex;
+ this.jumpToIndex(startIndex);
+ } else if (3 == this.mode) {
+ this.firstIndex = startIndex;
+ this.prepareThumbnailView();
+ this.jumpToIndex(startIndex);
+ } else {
//this.resizePageView();
- this.displayedLeafs=[0];
- if ('' != startLeaf) {
- this.displayedLeafs = [parseInt(startLeaf.substr(1))];
- }
+ this.displayedIndices=[0];
+ this.firstIndex = startIndex;
+ this.displayedIndices = [this.firstIndex];
//console.log('titleLeaf: %d', this.titleLeaf);
- //console.log('displayedLeafs: %s', this.displayedLeafs);
+ //console.log('displayedIndices: %s', this.displayedIndices);
this.prepareTwoPageView();
- //if (this.auto) this.nextPage();
}
+
+ // Enact other parts of initial params
+ this.updateFromParams(params);
}
GnuBook.prototype.setupKeyListeners = function() {
var self = this;
-
+
var KEY_PGUP = 33;
var KEY_PGDOWN = 34;
var KEY_END = 35;
// We use document here instead of window to avoid a bug in jQuery on IE7
$(document).keydown(function(e) {
-
// Keyboard navigation
switch(e.keyCode) {
case KEY_PGUP:
case KEY_UP:
// In 1up mode page scrolling is handled by browser
if (2 == self.mode) {
+ e.preventDefault();
self.prev();
}
break;
case KEY_DOWN:
case KEY_PGDOWN:
if (2 == self.mode) {
+ e.preventDefault();
self.next();
}
break;
case KEY_END:
- self.end();
+ e.preventDefault();
+ self.last();
break;
case KEY_HOME:
- self.home();
+ e.preventDefault();
+ self.first();
break;
case KEY_LEFT:
if (self.keyboardNavigationIsDisabled(e)) {
+ e.preventDefault();
break;
}
if (2 == self.mode) {
+ e.preventDefault();
self.left();
}
break;
case KEY_RIGHT:
if (self.keyboardNavigationIsDisabled(e)) {
+ e.preventDefault();
break;
}
if (2 == self.mode) {
+ e.preventDefault();
self.right();
}
break;
GnuBook.prototype.drawLeafs = function() {
if (1 == this.mode) {
this.drawLeafsOnePage();
+ } else if(3 == this.mode) {
+ this.drawLeafsThumbnail();
} else {
this.drawLeafsTwoPage();
}
}
-// setDragHandler1up()
+// setDragHandler()
//______________________________________________________________________________
-GnuBook.prototype.setDragHandler1up = function(div) {
+GnuBook.prototype.setDragHandler = function(div) {
div.dragging = false;
- $(div).bind('mousedown', function(e) {
+ $(div).unbind('mousedown').bind('mousedown', function(e) {
+ e.preventDefault();
+
//console.log('mousedown at ' + e.pageY);
this.dragging = true;
var startTop = $('#GBcontainer').attr('scrollTop');
var startLeft = $('#GBcontainer').attr('scrollLeft');
- return false;
});
- $(div).bind('mousemove', function(ee) {
- //console.log('mousemove ' + startY);
+ $(div).unbind('mousemove').bind('mousemove', function(ee) {
+ ee.preventDefault();
+
+ // console.log('mousemove ' + ee.pageX + ',' + ee.pageY);
var offsetX = ee.pageX - this.prevMouseX;
var offsetY = ee.pageY - this.prevMouseY;
this.prevMouseX = ee.pageX;
this.prevMouseY = ee.pageY;
- return false;
});
- $(div).bind('mouseup', function(ee) {
+ $(div).unbind('mouseup').bind('mouseup', function(ee) {
+ ee.preventDefault();
//console.log('mouseup');
this.dragging = false;
- return false;
});
- $(div).bind('mouseleave', function(e) {
+ $(div).unbind('mouseleave').bind('mouseleave', function(e) {
+ e.preventDefault();
+ //console.log('mouseleave');
+
+ this.dragging = false;
+ });
+
+ $(div).unbind('mouseenter').bind('mouseenter', function(e) {
+ e.preventDefault();
+ //console.log('mouseenter');
+
+ this.dragging = false;
+ });
+}
+
+// setDragHandler2UP()
+//______________________________________________________________________________
+GnuBook.prototype.setDragHandler2UP = function(div) {
+ div.dragging = false;
+
+ $(div).unbind('mousedown').bind('mousedown', function(e) {
+ e.preventDefault();
+
+ //console.log('mousedown at ' + e.pageY);
+
+ this.dragStart = {x: e.pageX, y: e.pageY };
+ this.mouseDown = true;
+ this.dragging = false; // wait until drag distance
+ this.prevMouseX = e.pageX;
+ this.prevMouseY = e.pageY;
+
+ var startX = e.pageX;
+ var startY = e.pageY;
+ var startTop = $('#GBcontainer').attr('scrollTop');
+ var startLeft = $('#GBcontainer').attr('scrollLeft');
+
+ });
+
+ $(div).unbind('mousemove').bind('mousemove', function(ee) {
+ ee.preventDefault();
+
+ // console.log('mousemove ' + ee.pageX + ',' + ee.pageY);
+
+ var offsetX = ee.pageX - this.prevMouseX;
+ var offsetY = ee.pageY - this.prevMouseY;
+
+ var minDragDistance = 5; // $$$ constant
+
+ var distance = Math.max(Math.abs(offsetX), Math.abs(offsetY));
+
+ if (this.mouseDown && (distance > minDragDistance)) {
+ //console.log('drag start!');
+
+ this.dragging = true;
+ }
+
+ if (this.dragging) {
+ $('#GBcontainer').attr('scrollTop', $('#GBcontainer').attr('scrollTop') - offsetY);
+ $('#GBcontainer').attr('scrollLeft', $('#GBcontainer').attr('scrollLeft') - offsetX);
+ this.prevMouseX = ee.pageX;
+ this.prevMouseY = ee.pageY;
+ }
+
+
+ });
+
+ /*
+ $(div).unbind('mouseup').bind('mouseup', function(ee) {
+ ee.preventDefault();
+ //console.log('mouseup');
+
+ this.dragging = false;
+ this.mouseDown = false;
+ });
+ */
+
+
+ $(div).unbind('mouseleave').bind('mouseleave', function(e) {
+ e.preventDefault();
//console.log('mouseleave');
- //$(this).unbind('mousemove mouseup');
+ this.dragging = false;
+ this.mouseDown = false;
+ });
+
+ $(div).unbind('mouseenter').bind('mouseenter', function(e) {
+ e.preventDefault();
+ //console.log('mouseenter');
+
this.dragging = false;
+ this.mouseDown = false;
+ });
+}
+
+GnuBook.prototype.setClickHandler2UP = function( element, data, handler) {
+ //console.log('setting handler');
+ //console.log(element.tagName);
+
+ $(element).unbind('click').bind('click', data, function(e) {
+ e.preventDefault();
+
+ //console.log('click!');
+
+ if (this.mouseDown && (!this.dragging)) {
+ //console.log('click not dragging!');
+ handler(e);
+ }
+ this.dragging = false;
+ this.mouseDown = false;
});
}
var scrollBottom = scrollTop + $('#GBcontainer').height();
//console.log('top=' + scrollTop + ' bottom='+scrollBottom);
- var leafsToDisplay = [];
+ var indicesToDisplay = [];
var i;
var leafTop = 0;
var bottomInView = (leafBottom >= scrollTop) && (leafBottom <= scrollBottom);
var middleInView = (leafTop <=scrollTop) && (leafBottom>=scrollBottom);
if (topInView | bottomInView | middleInView) {
+ //console.log('displayed: ' + this.displayedIndices);
//console.log('to display: ' + i);
- leafsToDisplay.push(i);
+ indicesToDisplay.push(i);
}
leafTop += height +10;
leafBottom += 10;
}
- var firstLeafToDraw = leafsToDisplay[0];
- window.location.replace('#' + firstLeafToDraw);
- this.firstIndex = firstLeafToDraw;
+ var firstIndexToDraw = indicesToDisplay[0];
+ this.firstIndex = firstIndexToDraw;
+
+ // Update hash, but only if we're currently displaying a leaf
+ // Hack that fixes #365790
+ if (this.displayedIndices.length > 0) {
+ this.updateLocationHash();
+ }
- if ((0 != firstLeafToDraw) && (1 < this.reduce)) {
- firstLeafToDraw--;
- leafsToDisplay.unshift(firstLeafToDraw);
+ if ((0 != firstIndexToDraw) && (1 < this.reduce)) {
+ firstIndexToDraw--;
+ indicesToDisplay.unshift(firstIndexToDraw);
}
- var lastLeafToDraw = leafsToDisplay[leafsToDisplay.length-1];
- if ( ((this.numLeafs-1) != lastLeafToDraw) && (1 < this.reduce) ) {
- leafsToDisplay.push(lastLeafToDraw+1);
+ var lastIndexToDraw = indicesToDisplay[indicesToDisplay.length-1];
+ if ( ((this.numLeafs-1) != lastIndexToDraw) && (1 < this.reduce) ) {
+ indicesToDisplay.push(lastIndexToDraw+1);
}
leafTop = 0;
var i;
- for (i=0; i<firstLeafToDraw; i++) {
+ for (i=0; i<firstIndexToDraw; i++) {
leafTop += parseInt(this.getPageHeight(i)/this.reduce) +10;
}
var viewWidth = $('#GBcontainer').attr('scrollWidth');
- for (i=0; i<leafsToDisplay.length; i++) {
- var leafNum = leafsToDisplay[i];
- var height = parseInt(this.getPageHeight(leafNum)/this.reduce);
+ for (i=0; i<indicesToDisplay.length; i++) {
+ var index = indicesToDisplay[i];
+ var height = parseInt(this.getPageHeight(index)/this.reduce);
- if(-1 == jQuery.inArray(leafsToDisplay[i], this.displayedLeafs)) {
- var width = parseInt(this.getPageWidth(leafNum)/this.reduce);
- //console.log("displaying leaf " + leafsToDisplay[i] + ' leafTop=' +leafTop);
+ if(-1 == jQuery.inArray(indicesToDisplay[i], this.displayedIndices)) {
+ var width = parseInt(this.getPageWidth(index)/this.reduce);
+ //console.log("displaying leaf " + indicesToDisplay[i] + ' leafTop=' +leafTop);
var div = document.createElement("div");
div.className = 'GBpagediv1up';
- div.id = 'pagediv'+leafNum;
+ div.id = 'pagediv'+index;
div.style.position = "absolute";
$(div).css('top', leafTop + 'px');
var left = (viewWidth-width)>>1;
$(div).css('height', height+'px');
//$(div).text('loading...');
- this.setDragHandler1up(div);
+ this.setDragHandler(div);
$('#GBpageview').append(div);
var img = document.createElement("img");
- img.src = this.getPageURI(leafNum);
+ img.src = this.getPageURI(index);
$(img).css('width', width+'px');
$(img).css('height', height+'px');
$(div).append(img);
} else {
- //console.log("not displaying " + leafsToDisplay[i] + ' score=' + jQuery.inArray(leafsToDisplay[i], this.displayedLeafs));
+ //console.log("not displaying " + indicesToDisplay[i] + ' score=' + jQuery.inArray(indicesToDisplay[i], this.displayedIndices));
}
leafTop += height +10;
}
- for (i=0; i<this.displayedLeafs.length; i++) {
- if (-1 == jQuery.inArray(this.displayedLeafs[i], leafsToDisplay)) {
- var leafNum = this.displayedLeafs[i];
- //console.log('Removing leaf ' + leafNum);
- //console.log('id='+'#pagediv'+leafNum+ ' top = ' +$('#pagediv'+leafNum).css('top'));
- $('#pagediv'+leafNum).remove();
+ for (i=0; i<this.displayedIndices.length; i++) {
+ if (-1 == jQuery.inArray(this.displayedIndices[i], indicesToDisplay)) {
+ var index = this.displayedIndices[i];
+ //console.log('Removing leaf ' + index);
+ //console.log('id='+'#pagediv'+index+ ' top = ' +$('#pagediv'+index).css('top'));
+ $('#pagediv'+index).remove();
} else {
- //console.log('NOT Removing leaf ' + this.displayedLeafs[i]);
+ //console.log('NOT Removing leaf ' + this.displayedIndices[i]);
}
}
- this.displayedLeafs = leafsToDisplay.slice();
+ this.displayedIndices = indicesToDisplay.slice();
this.updateSearchHilites();
- if (null != this.getPageNum(firstLeafToDraw)) {
- $("#GBpagenum").val(this.getPageNum(firstLeafToDraw));
+ if (null != this.getPageNum(firstIndexToDraw)) {
+ $("#GBpagenum").val(this.getPageNum(this.currentIndex()));
} else {
$("#GBpagenum").val('');
}
+
+ this.updateToolbarZoom(this.reduce);
+
}
-// drawLeafsTwoPage()
+// drawLeafsThumbnail()
//______________________________________________________________________________
-GnuBook.prototype.drawLeafsTwoPage = function() {
- //alert('drawing two leafs!');
+GnuBook.prototype.drawLeafsThumbnail = function() {
+ //alert('drawing leafs!');
+ this.timer = null;
- var scrollTop = $('#GBcontainer').attr('scrollTop');
+ var viewWidth = $('#GBcontainer').attr('scrollWidth') - 20; // width minus buffer
+
+ //console.log('top=' + scrollTop + ' bottom='+scrollBottom);
+
+ var i;
+ var leafWidth;
+ var leafHeight;
+ var rightPos = 0;
+ var bottomPos = 0;
+ var maxRight = 0;
+ var currentRow = 0;
+ var leafIndex = 0;
+ var leafMap = [];
+
+ for (i=0; i<this.numLeafs; i++) {
+ leafWidth = parseInt(this.getPageWidth(i)/this.reduce, 10);
+ if (rightPos + (leafWidth + this.padding) > viewWidth){
+ currentRow++;
+ rightPos = 0;
+ leafIndex = 0;
+ }
+
+ if (leafMap[currentRow]===undefined) { leafMap[currentRow] = {}; }
+ if (leafMap[currentRow].leafs===undefined) {
+ leafMap[currentRow].leafs = [];
+ leafMap[currentRow].height = 0;
+ leafMap[currentRow].top = 0;
+ }
+ leafMap[currentRow].leafs[leafIndex] = {};
+ leafMap[currentRow].leafs[leafIndex].num = i;
+ leafMap[currentRow].leafs[leafIndex].left = rightPos;
+
+ leafHeight = parseInt(this.getPageHeight(leafMap[currentRow].leafs[leafIndex].num)/this.reduce, 10);
+ if (leafHeight > leafMap[currentRow].height) { leafMap[currentRow].height = leafHeight; }
+ if (leafIndex===0) { bottomPos += this.padding + leafMap[currentRow].height; }
+ rightPos += leafWidth + this.padding;
+ if (rightPos > maxRight) { maxRight = rightPos; }
+ leafIndex++;
+ }
+
+ // reset the bottom position based on thumbnails
+ $('#GBpageview').height(bottomPos);
+
+ var pageViewBuffer = Math.floor(($('#GBcontainer').attr('scrollWidth') - maxRight) / 2) - 14;
+ var scrollTop = $('#GBcontainer').attr('scrollTop');
var scrollBottom = scrollTop + $('#GBcontainer').height();
+
+ var leafTop = 0;
+ var leafBottom = 0;
+ var rowsToDisplay = [];
+
+ for (i=0; i<leafMap.length; i++) {
+ leafBottom += this.padding + leafMap[i].height;
+ var topInView = (leafTop >= scrollTop) && (leafTop <= scrollBottom);
+ var bottomInView = (leafBottom >= scrollTop) && (leafBottom <= scrollBottom);
+ var middleInView = (leafTop <=scrollTop) && (leafBottom>=scrollBottom);
+ if (topInView | bottomInView | middleInView) {
+ //console.log('row to display: ' + j);
+ rowsToDisplay.push(i);
+ }
+ if(leafTop > leafMap[i].top) { leafMap[i].top = leafTop; }
+ leafTop = leafBottom;
+ }
+
+ var firstRow = rowsToDisplay[0];
+ var lastRow = rowsToDisplay[rowsToDisplay.length-1];
+ var rowBuffer = 4;
+ for (i=1; i<rowBuffer+1; i++) {
+ if (firstRow-i >= 0) { rowsToDisplay.unshift(firstRow-i); }
+ if (lastRow+i < leafMap.length) { rowsToDisplay.push(lastRow+i); }
+ }
+
+ // Update hash, but only if we're currently displaying a leaf
+ // Hack that fixes #365790
+ if (this.displayedRows.length > 0) {
+ this.updateLocationHash();
+ }
+
+ var j;
+ var row;
+ var left;
+ var index;
+ var div;
+ var link;
+ var img;
+ for (i=0; i<rowsToDisplay.length; i++) {
+ if (-1 == jQuery.inArray(rowsToDisplay[i], this.displayedRows)) {
+ row = rowsToDisplay[i];
+
+
+ for (j=0; j<leafMap[row].leafs.length; j++) {
+ index = leafMap[row].leafs[j].num;
+
+ leafWidth = parseInt(this.getPageWidth(index)/this.reduce, 10);
+ leafHeight = parseInt(this.getPageHeight(index)/this.reduce, 10);
+ leafTop = leafMap[row].top;
+ left = leafMap[row].leafs[j].left + pageViewBuffer;
+
+ div = document.createElement("div");
+ div.id = 'pagediv'+index;
+ div.style.position = "absolute";
+ div.className = "GBpagedivthumb";
+
+ left += this.padding;
+ $(div).css('top', leafTop + 'px');
+ $(div).css('left', left+'px');
+ $(div).css('width', leafWidth+'px');
+ $(div).css('height', leafHeight+'px');
+ //$(div).text('loading...');
+
+ // link to page in single page mode
+ link = document.createElement("a");
+ link.href = '#page/' + (this.getPageNum(index)) +'/mode/1up' ;
+ $(div).append(link);
+
+ $('#GBpageview').append(div);
+
+ img = document.createElement("img");
+ img.src = this.getPageURI(index);
+ $(img).css('width', leafWidth+'px');
+ $(img).css('height', leafHeight+'px');
+ img.style.border = "0";
+ $(link).append(img);
+ //console.log('displaying thumbnail: ' + leafMap[j]);
+ }
+ }
+ }
+
+
+ // remove previous highlights
+ if ($('.GBpagedivthumb_highlight').length>0) {
+ div = $('.GBpagedivthumb_highlight')
+ div.attr({className: 'GBpagedivthumb' });
+ }
+ // highlight current page
+ $('#pagediv'+this.currentIndex()).attr({className: 'GBpagedivthumb_highlight' });
+
+ var k;
+ for (i=0; i<this.displayedRows.length; i++) {
+ if (-1 == jQuery.inArray(this.displayedRows[i], rowsToDisplay)) {
+ row = this.displayedRows[i];
+ for (k=0; k<leafMap[row].leafs.length; k++) {
+ index = leafMap[row].leafs[k].num;
+ //console.log('Removing leaf ' + index);
+ $('#pagediv'+index).remove();
+ }
+ } else {
+
+ //console.log('NOT Removing leaf ' + this.displayedIndices[i]);
+ }
+ }
+
+ this.displayedRows = rowsToDisplay.slice();
+
+ if (null !== this.getPageNum(this.currentIndex())) {
+ $("#GBpagenum").val(this.getPageNum(this.currentIndex()));
+ } else {
+ $("#GBpagenum").val('');
+ }
+
+ this.updateToolbarZoom(this.reduce);
+}
+
+// drawLeafsTwoPage()
+//______________________________________________________________________________
+GnuBook.prototype.drawLeafsTwoPage = function() {
+ var scrollTop = $('#GBtwopageview').attr('scrollTop');
+ var scrollBottom = scrollTop + $('#GBtwopageview').height();
- //console.log('drawLeafsTwoPage: this.currrentLeafL ' + this.currentLeafL);
+ // $$$ we should use calculated values in this.twoPage (recalc if necessary)
- var leafNum = this.currentLeafL;
- var height = this.getPageHeight(leafNum);
- var width = this.getPageWidth(leafNum);
- var handSide= this.getPageSide(leafNum);
+ var indexL = this.twoPage.currentIndexL;
+ var heightL = this.getPageHeight(indexL);
+ var widthL = this.getPageWidth(indexL);
- var leafEdgeWidthL = this.leafEdgeWidth(leafNum);
- var leafEdgeWidthR = this.twoPageEdgeW - leafEdgeWidthL;
- var bookCoverDivWidth = this.twoPageW*2+20 + this.twoPageEdgeW;
- var bookCoverDivLeft = ($('#GBcontainer').width() - bookCoverDivWidth) >> 1;
+ var leafEdgeWidthL = this.leafEdgeWidth(indexL);
+ var leafEdgeWidthR = this.twoPage.edgeWidth - leafEdgeWidthL;
+ //var bookCoverDivWidth = this.twoPage.width*2 + 20 + this.twoPage.edgeWidth; // $$$ hardcoded cover width
+ var bookCoverDivWidth = this.twoPage.bookCoverDivWidth;
//console.log(leafEdgeWidthL);
- var middle = ($('#GBcontainer').width() >> 1);
- var left = middle - this.twoPageW;
- var top = ($('#GBcontainer').height() - this.twoPageH) >> 1;
+ var middle = this.twoPage.middle; // $$$ getter instead?
+ var top = this.twoPageTop();
+ var bookCoverDivLeft = this.twoPage.bookCoverDivLeft;
- var scaledW = parseInt(this.twoPageH*width/height);
- left = 10+leafEdgeWidthL;
- //var right = left+scaledW;
- var right = $(this.twoPageDiv).width()-11-$(this.leafEdgeL).width()-scaledW;
-
- var gutter = middle + this.gutterOffsetForIndex(this.currentLeafL);
+ this.twoPage.scaledWL = this.getPageWidth2UP(indexL);
+ this.twoPage.gutter = this.twoPageGutter();
- this.prefetchImg(leafNum);
- $(this.prefetchedImgs[leafNum]).css({
+ this.prefetchImg(indexL);
+ $(this.prefetchedImgs[indexL]).css({
position: 'absolute',
- /*right: gutter+'px',*/
- left: gutter-scaledW+'px',
+ left: this.twoPage.gutter-this.twoPage.scaledWL+'px',
right: '',
top: top+'px',
backgroundColor: 'rgb(234, 226, 205)',
- height: this.twoPageH +'px',
- width: scaledW + 'px',
+ height: this.twoPage.height +'px', // $$$ height forced the same for both pages
+ width: this.twoPage.scaledWL + 'px',
borderRight: '1px solid black',
zIndex: 2
- }).appendTo('#GBcontainer');
- //$('#GBcontainer').append(this.prefetchedImgs[leafNum]);
-
-
- var leafNum = this.currentLeafR;
- var height = this.getPageHeight(leafNum);
- var width = this.getPageWidth(leafNum);
- // var left = ($('#GBcontainer').width() >> 1);
- left += scaledW;
+ }).appendTo('#GBtwopageview');
+
+ var indexR = this.twoPage.currentIndexR;
+ var heightR = this.getPageHeight(indexR);
+ var widthR = this.getPageWidth(indexR);
- var scaledW = this.twoPageH*width/height;
- this.prefetchImg(leafNum);
- $(this.prefetchedImgs[leafNum]).css({
+ // $$$ should use getwidth2up?
+ //var scaledWR = this.twoPage.height*widthR/heightR;
+ this.twoPage.scaledWR = this.getPageWidth2UP(indexR);
+ this.prefetchImg(indexR);
+ $(this.prefetchedImgs[indexR]).css({
position: 'absolute',
- left: gutter+'px',
+ left: this.twoPage.gutter+'px',
right: '',
top: top+'px',
backgroundColor: 'rgb(234, 226, 205)',
- height: this.twoPageH + 'px',
- width: scaledW + 'px',
+ height: this.twoPage.height + 'px', // $$$ height forced the same for both pages
+ width: this.twoPage.scaledWR + 'px',
borderLeft: '1px solid black',
zIndex: 2
- }).appendTo('#GBcontainer');
- //$('#GBcontainer').append(this.prefetchedImgs[leafNum]);
+ }).appendTo('#GBtwopageview');
- this.displayedLeafs = [this.currentLeafL, this.currentLeafR];
- this.setClickHandlers();
+ this.displayedIndices = [this.twoPage.currentIndexL, this.twoPage.currentIndexR];
+ this.setMouseHandlers2UP();
+ this.twoPageSetCursor();
this.updatePageNumBox2UP();
+ this.updateToolbarZoom(this.reduce);
+
+ // this.twoPagePlaceFlipAreas(); // No longer used
+
}
// updatePageNumBox2UP
//______________________________________________________________________________
GnuBook.prototype.updatePageNumBox2UP = function() {
- if (null != this.getPageNum(this.currentLeafL)) {
- $("#GBpagenum").val(this.getPageNum(this.currentLeafL));
+ if (null != this.getPageNum(this.twoPage.currentIndexL)) {
+ $("#GBpagenum").val(this.getPageNum(this.twoPage.currentIndexL));
} else {
$("#GBpagenum").val('');
}
- window.location.replace('#' + this.currentLeafL);
+ this.updateLocationHash();
}
// loadLeafs()
}
}
+// zoom(direction)
+//
+// Pass 1 to zoom in, anything else to zoom out
+//______________________________________________________________________________
+GnuBook.prototype.zoom = function(direction) {
+ switch (this.mode) {
+ case this.constMode1up:
+ return this.zoom1up(direction);
+ case this.constMode2up:
+ return this.zoom2up(direction);
+ }
+}
-// zoom1up()
+// zoom1up(dir)
//______________________________________________________________________________
GnuBook.prototype.zoom1up = function(dir) {
if (2 == this.mode) { //can only zoom in 1-page mode
return;
}
+ // $$$ with flexible zoom we could "snap" to /2 page reductions
+ // for better scaling
if (1 == dir) {
if (this.reduce <= 0.5) return;
this.reduce*=0.5; //zoom in
if (this.reduce >= 8) return;
this.reduce*=2; //zoom out
}
-
+
+ this.pageScale = this.reduce; // preserve current reduce
this.resizePageView();
$('#GBpageview').empty()
- this.displayedLeafs = [];
+ this.displayedIndices = [];
this.loadLeafs();
- $('#GBzoom').text(100/this.reduce);
+ this.updateToolbarZoom(this.reduce);
}
-
// resizePageView()
//______________________________________________________________________________
GnuBook.prototype.resizePageView = function() {
var viewWidth = $('#GBcontainer').attr('clientWidth');
var oldScrollTop = $('#GBcontainer').attr('scrollTop');
- var oldViewHeight = $('#GBpageview').height();
- if (0 != oldViewHeight) {
- var scrollRatio = oldScrollTop / oldViewHeight;
+ var oldScrollLeft = $('#GBcontainer').attr('scrollLeft');
+ var oldPageViewHeight = $('#GBpageview').height();
+ var oldPageViewWidth = $('#GBpageview').width();
+
+ var oldCenterY = this.centerY1up();
+ var oldCenterX = this.centerX1up();
+
+ if (0 != oldPageViewHeight) {
+ var scrollRatio = oldCenterY / oldPageViewHeight;
} else {
var scrollRatio = 0;
}
$('#GBpageview').height(viewHeight);
$('#GBpageview').width(viewWidth);
- $('#GBcontainer').attr('scrollTop', Math.floor(scrollRatio*viewHeight));
+ var newCenterY = scrollRatio*viewHeight;
+ var newTop = Math.max(0, Math.floor( newCenterY - $('#GBcontainer').height()/2 ));
+ $('#GBcontainer').attr('scrollTop', newTop);
- this.centerPageView();
+ // We use clientWidth here to avoid miscalculating due to scroll bar
+ var newCenterX = oldCenterX * (viewWidth / oldPageViewWidth);
+ var newLeft = newCenterX - $('#GBcontainer').attr('clientWidth') / 2;
+ newLeft = Math.max(newLeft, 0);
+ $('#GBcontainer').attr('scrollLeft', newLeft);
+ //console.log('oldCenterX ' + oldCenterX + ' newCenterX ' + newCenterX + ' newLeft ' + newLeft);
+
+ //this.centerPageView();
this.loadLeafs();
}
+// centerX1up()
+//______________________________________________________________________________
+// Returns the current offset of the viewport center in scaled document coordinates.
+GnuBook.prototype.centerX1up = function() {
+ var centerX;
+ if ($('#GBpageview').width() < $('#GBcontainer').attr('clientWidth')) { // fully shown
+ centerX = $('#GBpageview').width();
+ } else {
+ centerX = $('#GBcontainer').attr('scrollLeft') + $('#GBcontainer').attr('clientWidth') / 2;
+ }
+ centerX = Math.floor(centerX);
+ return centerX;
+}
+
+// centerY1up()
+//______________________________________________________________________________
+// Returns the current offset of the viewport center in scaled document coordinates.
+GnuBook.prototype.centerY1up = function() {
+ var centerY = $('#GBcontainer').attr('scrollTop') + $('#GBcontainer').height() / 2;
+ return Math.floor(centerY);
+}
+
// centerPageView()
//______________________________________________________________________________
GnuBook.prototype.centerPageView = function() {
}
-// jumpToPage()
+// zoom2up(direction)
//______________________________________________________________________________
-GnuBook.prototype.jumpToPage = function(pageNum) {
+GnuBook.prototype.zoom2up = function(direction) {
- var i;
- var foundPage = false;
- var foundLeaf = null;
- for (i=0; i<this.numLeafs; i++) {
- if (this.getPageNum(i) == pageNum) {
- foundPage = true;
- foundLeaf = i;
- break;
+ // Hard stop autoplay
+ this.stopFlipAnimations();
+
+ // Get new zoom state
+ var newZoom = this.twoPageNextReduce(this.reduce, direction);
+ if ((this.reduce == newZoom.reduce) && (this.twoPage.autofit == newZoom.autofit)) {
+ return;
+ }
+ this.twoPage.autofit = newZoom.autofit;
+ this.reduce = newZoom.reduce;
+ this.pageScale = this.reduce; // preserve current reduce
+
+ // Preserve view center position
+ var oldCenter = this.twoPageGetViewCenter();
+
+ // If zooming in, reload imgs. DOM elements will be removed by prepareTwoPageView
+ // $$$ An improvement would be to use the low res image until the larger one is loaded.
+ if (1 == direction) {
+ for (var img in this.prefetchedImgs) {
+ delete this.prefetchedImgs[img];
+ }
+ }
+
+ // Prepare view with new center to minimize visual glitches
+ this.prepareTwoPageView(oldCenter.percentageX, oldCenter.percentageY);
+}
+
+
+// quantizeReduce(reduce)
+//______________________________________________________________________________
+// Quantizes the given reduction factor to closest power of two from set from 12.5% to 200%
+GnuBook.prototype.quantizeReduce = function(reduce) {
+ var quantized = this.reductionFactors[0];
+ var distance = Math.abs(reduce - quantized);
+ for (var i = 1; i < this.reductionFactors.length; i++) {
+ newDistance = Math.abs(reduce - this.reductionFactors[i]);
+ if (newDistance < distance) {
+ distance = newDistance;
+ quantized = this.reductionFactors[i];
+ }
+ }
+
+ return quantized;
+}
+
+// twoPageNextReduce()
+//______________________________________________________________________________
+// Returns the next reduction level
+GnuBook.prototype.twoPageNextReduce = function(reduce, direction) {
+ var result = {};
+ var autofitReduce = this.twoPageGetAutofitReduce();
+
+ if (0 == direction) { // autofit
+ result.autofit = true;
+ result.reduce = autofitReduce;
+
+ } else if (1 == direction) { // zoom in
+ var newReduce = this.reductionFactors[0];
+
+ for (var i = 1; i < this.reductionFactors.length; i++) {
+ if (this.reductionFactors[i] < reduce) {
+ newReduce = this.reductionFactors[i];
+ }
+ }
+
+ if (!this.twoPage.autofit && (autofitReduce < reduce && autofitReduce > newReduce)) {
+ // use autofit
+ result.autofit = true;
+ result.reduce = autofitReduce;
+ } else {
+ result.autofit = false;
+ result.reduce = newReduce;
+ }
+
+ } else { // zoom out
+ var lastIndex = this.reductionFactors.length - 1;
+ var newReduce = this.reductionFactors[lastIndex];
+
+ for (var i = lastIndex; i >= 0; i--) {
+ if (this.reductionFactors[i] > reduce) {
+ newReduce = this.reductionFactors[i];
+ }
+ }
+
+ if (!this.twoPage.autofit && (autofitReduce > reduce && autofitReduce < newReduce)) {
+ // use autofit
+ result.autofit = true;
+ result.reduce = autofitReduce;
+ } else {
+ result.autofit = false;
+ result.reduce = newReduce;
}
}
- if (foundPage) {
+ return result;
+}
+
+// jumpToPage()
+//______________________________________________________________________________
+// Attempts to jump to page. Returns true if page could be found, false otherwise.
+GnuBook.prototype.jumpToPage = function(pageNum) {
+
+ var pageIndex = this.getPageIndex(pageNum);
+
+ if ('undefined' != typeof(pageIndex)) {
var leafTop = 0;
var h;
- this.jumpToIndex(foundLeaf);
+ this.jumpToIndex(pageIndex);
$('#GBcontainer').attr('scrollTop', leafTop);
- } else {
- alert('Page not found. This book might not have pageNumbers in scandata.');
+ return true;
}
+
+ // Page not found
+ return false;
}
// jumpToIndex()
// By checking against min/max we do nothing if requested index
// is current
- if (index < Math.min(this.currentLeafL, this.currentLeafR)) {
+ if (index < Math.min(this.twoPage.currentIndexL, this.twoPage.currentIndexR)) {
this.flipBackToIndex(index);
- } else if (index > Math.max(this.currentLeafL, this.currentLeafR)) {
+ } else if (index > Math.max(this.twoPage.currentIndexL, this.twoPage.currentIndexR)) {
this.flipFwdToIndex(index);
}
- } else {
+ } else if (3 == this.mode){
+ var viewWidth = $('#GBcontainer').attr('scrollWidth') - 20; // width minus buffer
+ var i;
+ var leafWidth = 0;
+ var leafHeight = 0;
+ var rightPos = 0;
+ var bottomPos = 0;
+ var rowHeight = 0;
+ var leafTop = 0;
+ var leafIndex = 0;
+
+ for (i=0; i<(index+1); i++) {
+ leafWidth = parseInt(this.getPageWidth(i)/this.reduce, 10);
+ if (rightPos + (leafWidth + this.padding) > viewWidth){
+ rightPos = 0;
+ rowHeight = 0;
+ leafIndex = 0;
+ }
+ leafHeight = parseInt(this.getPageHeight(i)/this.reduce, 10);
+ if(leafHeight > rowHeight) { rowHeight = leafHeight; }
+ if (leafIndex==0) { leafTop = bottomPos; }
+ if (leafIndex==0) { bottomPos += this.padding + rowHeight; }
+ rightPos += leafWidth + this.padding;
+ leafIndex++;
+ }
+ this.firstIndex=index;
+ if ($('#GBcontainer').attr('scrollTop') == leafTop) {
+ this.loadLeafs();
+ } else {
+ $('#GBcontainer').animate({scrollTop: leafTop },'fast');
+ }
+ } else {
var i;
var leafTop = 0;
var h;
leafTop += h + this.padding;
}
//$('#GBcontainer').attr('scrollTop', leafTop);
- $('#GBcontainer').animate({scrollTop: leafTop },'fast');
+ $('#GBcontainer').animate({scrollTop: leafTop },'fast');
}
}
//console.log(' asked to switch to mode ' + mode + ' from ' + this.mode);
if (mode == this.mode) return;
+
+ if (!this.canSwitchToMode(mode)) {
+ return;
+ }
this.autoStop();
this.removeSearchHilites();
this.mode = mode;
-
this.switchToolbarMode(mode);
+
+ // reinstate scale if moving from thumbnail view
+ if (this.pageScale != this.reduce) this.reduce = this.pageScale;
+ // $$$ TODO preserve center of view when switching between mode
+ // See https://bugs.edge.launchpad.net/gnubook/+bug/416682
+
if (1 == mode) {
+ this.reduce = this.quantizeReduce(this.reduce);
this.prepareOnePageView();
+ } else if (3 == mode) {
+ this.reduce = this.quantizeReduce(this.reduce);
+ this.prepareThumbnailView();
+ this.jumpToIndex(this.currentIndex());
} else {
+ this.twoPage.autofit = false; // Take zoom level from other mode
+ this.reduce = this.quantizeReduce(this.reduce);
this.prepareTwoPageView();
+ this.twoPageCenterView(0.5, 0.5); // $$$ TODO preserve center
}
}
//______________________________________________________________________________
GnuBook.prototype.prepareOnePageView = function() {
- var startLeaf = this.displayedLeafs[0];
+ // var startLeaf = this.displayedIndices[0];
+ var startLeaf = this.currentIndex();
$('#GBcontainer').empty();
$('#GBcontainer').css({
overflowX: 'auto'
});
- $("#GBcontainer").append("<div id='GBpageview'></div>");
+ var gbPageView = $("#GBcontainer").append("<div id='GBpageview'></div>");
+
this.resizePageView();
+
this.jumpToIndex(startLeaf);
- this.displayedLeafs = [];
+ this.displayedIndices = [];
+
this.drawLeafsOnePage();
- $('#GBzoom').text(100/this.reduce);
+
+ // Bind mouse handlers
+ // Disable mouse click to avoid selected/highlighted page images - bug 354239
+ gbPageView.bind('mousedown', function(e) {
+ // $$$ check here for right-click and don't disable. Also use jQuery style
+ // for stopping propagation. See https://bugs.edge.launchpad.net/gnubook/+bug/362626
+ return false;
+ })
+ // Special hack for IE7
+ gbPageView[0].onselectstart = function(e) { return false; };
}
-// prepareTwoPageView()
+//prepareThumbnailView()
//______________________________________________________________________________
-GnuBook.prototype.prepareTwoPageView = function() {
+GnuBook.prototype.prepareThumbnailView = function() {
+
+ // var startLeaf = this.displayedIndices[0];
+ var startLeaf = this.currentIndex();
+ this.reduce = this.thumbScale;
+
$('#GBcontainer').empty();
+ $('#GBcontainer').css({
+ overflowY: 'scroll',
+ overflowX: 'auto'
+ });
+
+ var gbPageView = $("#GBcontainer").append("<div id='GBpageview'></div>");
+
+ this.resizePageView();
+
+ this.displayedRows = [];
+ this.drawLeafsThumbnail();
+
+ // Bind mouse handlers
+ // Disable mouse click to avoid selected/highlighted page images - bug 354239
+ gbPageView.bind('mousedown', function(e) {
+ // $$$ check here for right-click and don't disable. Also use jQuery style
+ // for stopping propagation. See https://bugs.edge.launchpad.net/gnubook/+bug/362626
+ return false;
+ })
+ // Special hack for IE7
+ gbPageView[0].onselectstart = function(e) { return false; };
+}
+// prepareTwoPageView()
+//______________________________________________________________________________
+// Some decisions about two page view:
+//
+// Both pages will be displayed at the same height, even if they were different physical/scanned
+// sizes. This simplifies the animation (from a design as well as technical standpoint). We
+// examine the page aspect ratios (in calculateSpreadSize) and use the page with the most "normal"
+// aspect ratio to determine the height.
+//
+// The two page view div is resized to keep the middle of the book in the middle of the div
+// even as the page sizes change. To e.g. keep the middle of the book in the middle of the GBcontent
+// div requires adjusting the offset of GBtwpageview and/or scrolling in GBcontent.
+GnuBook.prototype.prepareTwoPageView = function(centerPercentageX, centerPercentageY) {
+ $('#GBcontainer').empty();
+ $('#GBcontainer').css('overflow', 'auto');
+
// We want to display two facing pages. We may be missing
// one side of the spread because it is the first/last leaf,
// foldouts, missing pages, etc
- var targetLeaf = this.displayedLeafs[0];
-
+ //var targetLeaf = this.displayedIndices[0];
+ var targetLeaf = this.firstIndex;
+
if (targetLeaf < this.firstDisplayableIndex()) {
targetLeaf = this.firstDisplayableIndex();
}
targetLeaf = this.lastDisplayableIndex();
}
- this.currentLeafL = null;
- this.currentLeafR = null;
- this.pruneUnusedImgs();
+ //this.twoPage.currentIndexL = null;
+ //this.twoPage.currentIndexR = null;
+ //this.pruneUnusedImgs();
var currentSpreadIndices = this.getSpreadIndices(targetLeaf);
- this.currentLeafL = currentSpreadIndices[0];
- this.currentLeafR = currentSpreadIndices[1];
+ this.twoPage.currentIndexL = currentSpreadIndices[0];
+ this.twoPage.currentIndexR = currentSpreadIndices[1];
+ this.firstIndex = this.twoPage.currentIndexL;
- this.calculateSpreadSize(); //sets this.twoPageW, twoPageH, and twoPageRatio
+ this.calculateSpreadSize(); //sets twoPage.width, twoPage.height and others
- // We want to minimize the unused space in two-up mode (maximize the amount of page
- // shown). We give width to the leaf edges and these widths change (though the sum
- // of the two remains constant) as we flip through the book. With the book
- // cover centered and fixed in the GBcontainer div the page images will meet
- // at the "gutter" which is generally offset from the center.
- var middle = ($('#GBcontainer').width() >> 1); // Middle of the GBcontainer div
- //var gutter = middle+parseInt((2*this.currentLeafL - this.numLeafs)*this.twoPageEdgeW/this.numLeafs/2);
-
- var gutter = middle + this.gutterOffsetForIndex(this.currentLeafL);
-
- var scaledWL = this.getPageWidth2UP(this.currentLeafL);
- var scaledWR = this.getPageWidth2UP(this.currentLeafR);
- var leafEdgeWidthL = this.leafEdgeWidth(this.currentLeafL);
- var leafEdgeWidthR = this.twoPageEdgeW - leafEdgeWidthL;
+ this.pruneUnusedImgs();
+ this.prefetch(); // Preload images or reload if scaling has changed
- //console.log('idealWidth='+idealWidth+' idealHeight='+idealHeight);
- //var bookCoverDivWidth = this.twoPageW*2+20 + this.twoPageEdgeW;
+ //console.dir(this.twoPage);
- // The width of the book cover div. The combined width of both pages, twice the width
- // of the book cover internal padding (2*10) and the page edges
- var bookCoverDivWidth = scaledWL + scaledWR + 20 + this.twoPageEdgeW;
-
- // The height of the book cover div
- var bookCoverDivHeight = this.twoPageH+20;
-
- //var bookCoverDivLeft = ($('#GBcontainer').width() - bookCoverDivWidth) >> 1;
- var bookCoverDivLeft = gutter-scaledWL-leafEdgeWidthL-10;
- var bookCoverDivTop = ($('#GBcontainer').height() - bookCoverDivHeight) >> 1;
- //console.log('bookCoverDivWidth='+bookCoverDivWidth+' bookCoverDivHeight='+bookCoverDivHeight+ ' bookCoverDivLeft='+bookCoverDivLeft+' bookCoverDivTop='+bookCoverDivTop);
+ // Add the two page view
+ // $$$ Can we get everything set up and then append?
+ $('#GBcontainer').append('<div id="GBtwopageview"></div>');
- this.twoPageDiv = document.createElement('div');
- $(this.twoPageDiv).attr('id', 'book_div_1').css({
+ // $$$ calculate first then set
+ $('#GBtwopageview').css( {
+ height: this.twoPage.totalHeight + 'px',
+ width: this.twoPage.totalWidth + 'px',
+ position: 'absolute'
+ });
+
+ // If there will not be scrollbars (e.g. when zooming out) we center the book
+ // since otherwise the book will be stuck off-center
+ if (this.twoPage.totalWidth < $('#GBcontainer').attr('clientWidth')) {
+ centerPercentageX = 0.5;
+ }
+ if (this.twoPage.totalHeight < $('#GBcontainer').attr('clientHeight')) {
+ centerPercentageY = 0.5;
+ }
+
+ this.twoPageCenterView(centerPercentageX, centerPercentageY);
+
+ this.twoPage.coverDiv = document.createElement('div');
+ $(this.twoPage.coverDiv).attr('id', 'GBbookcover').css({
border: '1px solid rgb(68, 25, 17)',
- width: bookCoverDivWidth + 'px',
- height: bookCoverDivHeight+'px',
+ width: this.twoPage.bookCoverDivWidth + 'px',
+ height: this.twoPage.bookCoverDivHeight+'px',
visibility: 'visible',
position: 'absolute',
backgroundColor: '#663929',
- left: bookCoverDivLeft + 'px',
- top: bookCoverDivTop+'px',
+ left: this.twoPage.bookCoverDivLeft + 'px',
+ top: this.twoPage.bookCoverDivTop+'px',
MozBorderRadiusTopleft: '7px',
MozBorderRadiusTopright: '7px',
MozBorderRadiusBottomright: '7px',
MozBorderRadiusBottomleft: '7px'
- }).appendTo('#GBcontainer');
- //$('#GBcontainer').append('<div id="book_div_1" style="border: 1px solid rgb(68, 25, 17); width: ' + bookCoverDivWidth + 'px; height: '+bookCoverDivHeight+'px; visibility: visible; position: absolute; background-color: rgb(136, 51, 34); left: ' + bookCoverDivLeft + 'px; top: '+bookCoverDivTop+'px; -moz-border-radius-topleft: 7px; -moz-border-radius-topright: 7px; -moz-border-radius-bottomright: 7px; -moz-border-radius-bottomleft: 7px;"/>');
-
-
- var height = this.getPageHeight(this.currentLeafR);
- var width = this.getPageWidth(this.currentLeafR);
- var scaledW = this.twoPageH*width/height;
+ }).appendTo('#GBtwopageview');
this.leafEdgeR = document.createElement('div');
- this.leafEdgeR.className = 'leafEdgeR';
+ this.leafEdgeR.className = 'leafEdgeR'; // $$$ the static CSS should be moved into the .css file
$(this.leafEdgeR).css({
borderStyle: 'solid solid solid none',
borderColor: 'rgb(51, 51, 34)',
borderWidth: '1px 1px 1px 0px',
- background: 'transparent url(images/right_edges.png) repeat scroll 0% 0%',
- width: leafEdgeWidthR + 'px',
- height: this.twoPageH-1 + 'px',
+ background: 'transparent url(' + this.imagesBaseURL + 'right_edges.png) repeat scroll 0% 0%',
+ width: this.twoPage.leafEdgeWidthR + 'px',
+ height: this.twoPage.height-1 + 'px',
/*right: '10px',*/
- left: gutter+scaledW+'px',
- top: bookCoverDivTop+10+'px',
+ left: this.twoPage.gutter+this.twoPage.scaledWR+'px',
+ top: this.twoPage.bookCoverDivTop+this.twoPage.coverInternalPadding+'px',
position: 'absolute'
- }).appendTo('#GBcontainer');
+ }).appendTo('#GBtwopageview');
this.leafEdgeL = document.createElement('div');
this.leafEdgeL.className = 'leafEdgeL';
- $(this.leafEdgeL).css({
+ $(this.leafEdgeL).css({ // $$$ static CSS should be moved to file
borderStyle: 'solid none solid solid',
borderColor: 'rgb(51, 51, 34)',
borderWidth: '1px 0px 1px 1px',
- background: 'transparent url(images/left_edges.png) repeat scroll 0% 0%',
- width: leafEdgeWidthL + 'px',
- height: this.twoPageH-1 + 'px',
- left: bookCoverDivLeft+10+'px',
- top: bookCoverDivTop+10+'px',
+ background: 'transparent url(' + this.imagesBaseURL + 'left_edges.png) repeat scroll 0% 0%',
+ width: this.twoPage.leafEdgeWidthL + 'px',
+ height: this.twoPage.height-1 + 'px',
+ left: this.twoPage.bookCoverDivLeft+this.twoPage.coverInternalPadding+'px',
+ top: this.twoPage.bookCoverDivTop+this.twoPage.coverInternalPadding+'px',
position: 'absolute'
- }).appendTo('#GBcontainer');
-
-
-
- bookCoverDivWidth = 30;
- bookCoverDivHeight = this.twoPageH+20;
- bookCoverDivLeft = ($('#GBcontainer').width() - bookCoverDivWidth) >> 1;
- bookCoverDivTop = ($('#GBcontainer').height() - bookCoverDivHeight) >> 1;
+ }).appendTo('#GBtwopageview');
div = document.createElement('div');
- $(div).attr('id', 'book_div_2').css({
+ $(div).attr('id', 'GBbookspine').css({
border: '1px solid rgb(68, 25, 17)',
- width: bookCoverDivWidth+'px',
- height: bookCoverDivHeight+'px',
+ width: this.twoPage.bookSpineDivWidth+'px',
+ height: this.twoPage.bookSpineDivHeight+'px',
position: 'absolute',
backgroundColor: 'rgb(68, 25, 17)',
- left: bookCoverDivLeft+'px',
- top: bookCoverDivTop+'px'
- }).appendTo('#GBcontainer');
- //$('#GBcontainer').append('<div id="book_div_2" style="border: 1px solid rgb(68, 25, 17); width: '+bookCoverDivWidth+'px; height: '+bookCoverDivHeight+'px; visibility: visible; position: absolute; background-color: rgb(68, 25, 17); left: '+bookCoverDivLeft+'px; top: '+bookCoverDivTop+'px;"/>');
-
- bookCoverDivWidth = this.twoPageW*2;
- bookCoverDivHeight = this.twoPageH;
- bookCoverDivLeft = ($('#GBcontainer').width() - bookCoverDivWidth) >> 1;
- bookCoverDivTop = ($('#GBcontainer').height() - bookCoverDivHeight) >> 1;
-
-
+ left: this.twoPage.bookSpineDivLeft+'px',
+ top: this.twoPage.bookSpineDivTop+'px'
+ }).appendTo('#GBtwopageview');
+
+ var self = this; // for closure
+
+ /* Flip areas no longer used
+ this.twoPage.leftFlipArea = document.createElement('div');
+ this.twoPage.leftFlipArea.className = 'GBfliparea';
+ $(this.twoPage.leftFlipArea).attr('id', 'GBleftflip').css({
+ border: '0',
+ width: this.twoPageFlipAreaWidth() + 'px',
+ height: this.twoPageFlipAreaHeight() + 'px',
+ position: 'absolute',
+ left: this.twoPageLeftFlipAreaLeft() + 'px',
+ top: this.twoPageFlipAreaTop() + 'px',
+ cursor: 'w-resize',
+ zIndex: 100
+ }).bind('click', function(e) {
+ self.left();
+ }).bind('mousedown', function(e) {
+ e.preventDefault();
+ }).appendTo('#GBtwopageview');
+
+ this.twoPage.rightFlipArea = document.createElement('div');
+ this.twoPage.rightFlipArea.className = 'GBfliparea';
+ $(this.twoPage.rightFlipArea).attr('id', 'GBrightflip').css({
+ border: '0',
+ width: this.twoPageFlipAreaWidth() + 'px',
+ height: this.twoPageFlipAreaHeight() + 'px',
+ position: 'absolute',
+ left: this.twoPageRightFlipAreaLeft() + 'px',
+ top: this.twoPageFlipAreaTop() + 'px',
+ cursor: 'e-resize',
+ zIndex: 100
+ }).bind('click', function(e) {
+ self.right();
+ }).bind('mousedown', function(e) {
+ e.preventDefault();
+ }).appendTo('#GBtwopageview');
+ */
+
this.prepareTwoPagePopUp();
-
- this.displayedLeafs = [];
- //this.leafsToDisplay=[firstLeaf, firstLeaf+1];
- //console.log('leafsToDisplay: ' + this.leafsToDisplay[0] + ' ' + this.leafsToDisplay[1]);
+ this.displayedIndices = [];
+
+ //this.indicesToDisplay=[firstLeaf, firstLeaf+1];
+ //console.log('indicesToDisplay: ' + this.indicesToDisplay[0] + ' ' + this.indicesToDisplay[1]);
this.drawLeafsTwoPage();
this.updateSearchHilites2UP();
+ this.updateToolbarZoom(this.reduce);
this.prefetch();
- $('#GBzoom').text((100*this.twoPageH/this.getPageHeight(this.currentLeafL)).toString().substr(0,4));
}
// prepareTwoPagePopUp()
//
-// This function prepares the "View leaf n" popup that shows while the mouse is
+// This function prepares the "View Page n" popup that shows while the mouse is
// over the left/right "stack of sheets" edges. It also binds the mouse
// events for these divs.
//______________________________________________________________________________
GnuBook.prototype.prepareTwoPagePopUp = function() {
+
this.twoPagePopUp = document.createElement('div');
$(this.twoPagePopUp).css({
border: '1px solid black',
$(this.leafEdgeR).bind('mousemove', this, function(e) {
- var jumpLeaf = e.data.jumpIndexForRightEdgePageX(e.pageX);
- $(e.data.twoPagePopUp).text('View Leaf '+jumpLeaf);
+ var jumpIndex = e.data.jumpIndexForRightEdgePageX(e.pageX);
+ $(e.data.twoPagePopUp).text('View ' + e.data.getPageName(jumpIndex));
+ // $$$ TODO: Make sure popup is positioned so that it is in view
+ // (https://bugs.edge.launchpad.net/gnubook/+bug/327456)
$(e.data.twoPagePopUp).css({
- left: e.pageX +5+ 'px',
- top: e.pageY-$('#GBcontainer').offset().top+ 'px'
+ left: e.pageX- $('#GBcontainer').offset().left + $('#GBcontainer').scrollLeft() + 20 + 'px',
+ top: e.pageY - $('#GBcontainer').offset().top + $('#GBcontainer').scrollTop() + 'px'
});
});
$(this.leafEdgeL).bind('mousemove', this, function(e) {
- var jumpLeaf = e.data.jumpIndexForLeftEdgePageX(e.pageX);
- $(e.data.twoPagePopUp).text('View Leaf '+jumpLeaf);
-
+ var jumpIndex = e.data.jumpIndexForLeftEdgePageX(e.pageX);
+ $(e.data.twoPagePopUp).text('View '+ e.data.getPageName(jumpIndex));
+
+ // $$$ TODO: Make sure popup is positioned so that it is in view
+ // (https://bugs.edge.launchpad.net/gnubook/+bug/327456)
$(e.data.twoPagePopUp).css({
- left: e.pageX - $(e.data.twoPagePopUp).width() - 30 + 'px',
- top: e.pageY-$('#GBcontainer').offset().top+ 'px'
+ left: e.pageX - $('#GBcontainer').offset().left + $('#GBcontainer').scrollLeft() - $(e.data.twoPagePopUp).width() - 25 + 'px',
+ top: e.pageY-$('#GBcontainer').offset().top + $('#GBcontainer').scrollTop() + 'px'
});
});
}
// calculateSpreadSize()
//______________________________________________________________________________
-// Calculates 2-page spread dimensions based on this.currentLeafL and
-// this.currentLeafR
-// This function sets this.twoPageH, twoPageW, and twoPageRatio
+// Calculates 2-page spread dimensions based on this.twoPage.currentIndexL and
+// this.twoPage.currentIndexR
+// This function sets this.twoPage.height, twoPage.width
GnuBook.prototype.calculateSpreadSize = function() {
- var firstLeaf = this.currentLeafL;
- var secondLeaf = this.currentLeafR;
- //console.log('first page is ' + firstLeaf);
+ var firstIndex = this.twoPage.currentIndexL;
+ var secondIndex = this.twoPage.currentIndexR;
+ //console.log('first page is ' + firstIndex);
+
+ // Calculate page sizes and total leaf width
+ var spreadSize;
+ if ( this.twoPage.autofit) {
+ spreadSize = this.getIdealSpreadSize(firstIndex, secondIndex);
+ } else {
+ // set based on reduction factor
+ spreadSize = this.getSpreadSizeFromReduce(firstIndex, secondIndex, this.reduce);
+ }
+
+ // Both pages together
+ this.twoPage.height = spreadSize.height;
+ this.twoPage.width = spreadSize.width;
+
+ // Individual pages
+ this.twoPage.scaledWL = this.getPageWidth2UP(firstIndex);
+ this.twoPage.scaledWR = this.getPageWidth2UP(secondIndex);
+
+ // Leaf edges
+ this.twoPage.edgeWidth = spreadSize.totalLeafEdgeWidth; // The combined width of both edges
+ this.twoPage.leafEdgeWidthL = this.leafEdgeWidth(this.twoPage.currentIndexL);
+ this.twoPage.leafEdgeWidthR = this.twoPage.edgeWidth - this.twoPage.leafEdgeWidthL;
+
+
+ // Book cover
+ // The width of the book cover div. The combined width of both pages, twice the width
+ // of the book cover internal padding (2*10) and the page edges
+ this.twoPage.bookCoverDivWidth = this.twoPage.scaledWL + this.twoPage.scaledWR + 2 * this.twoPage.coverInternalPadding + this.twoPage.edgeWidth;
+ // The height of the book cover div
+ this.twoPage.bookCoverDivHeight = this.twoPage.height + 2 * this.twoPage.coverInternalPadding;
+
+
+ // We calculate the total width and height for the div so that we can make the book
+ // spine centered
+ var leftGutterOffset = this.gutterOffsetForIndex(firstIndex);
+ var leftWidthFromCenter = this.twoPage.scaledWL - leftGutterOffset + this.twoPage.leafEdgeWidthL;
+ var rightWidthFromCenter = this.twoPage.scaledWR + leftGutterOffset + this.twoPage.leafEdgeWidthR;
+ var largestWidthFromCenter = Math.max( leftWidthFromCenter, rightWidthFromCenter );
+ this.twoPage.totalWidth = 2 * (largestWidthFromCenter + this.twoPage.coverInternalPadding + this.twoPage.coverExternalPadding);
+ this.twoPage.totalHeight = this.twoPage.height + 2 * (this.twoPage.coverInternalPadding + this.twoPage.coverExternalPadding);
+
+ // We want to minimize the unused space in two-up mode (maximize the amount of page
+ // shown). We give width to the leaf edges and these widths change (though the sum
+ // of the two remains constant) as we flip through the book. With the book
+ // cover centered and fixed in the GBcontainer div the page images will meet
+ // at the "gutter" which is generally offset from the center.
+ this.twoPage.middle = this.twoPage.totalWidth >> 1;
+ this.twoPage.gutter = this.twoPage.middle + this.gutterOffsetForIndex(firstIndex);
+
+ // The left edge of the book cover moves depending on the width of the pages
+ // $$$ change to getter
+ this.twoPage.bookCoverDivLeft = this.twoPage.gutter - this.twoPage.scaledWL - this.twoPage.leafEdgeWidthL - this.twoPage.coverInternalPadding;
+ // The top edge of the book cover stays a fixed distance from the top
+ this.twoPage.bookCoverDivTop = this.twoPage.coverExternalPadding;
+
+ // Book spine
+ this.twoPage.bookSpineDivHeight = this.twoPage.height + 2*this.twoPage.coverInternalPadding;
+ this.twoPage.bookSpineDivLeft = this.twoPage.middle - (this.twoPage.bookSpineDivWidth >> 1);
+ this.twoPage.bookSpineDivTop = this.twoPage.bookCoverDivTop;
+
+
+ this.reduce = spreadSize.reduce; // $$$ really set this here?
+}
+
+GnuBook.prototype.getIdealSpreadSize = function(firstIndex, secondIndex) {
+ var ideal = {};
+
+ // We check which page is closest to a "normal" page and use that to set the height
+ // for both pages. This means that foldouts and other odd size pages will be displayed
+ // smaller than the nominal zoom amount.
var canon5Dratio = 1.5;
- var firstLeafRatio = this.getPageHeight(firstLeaf) / this.getPageWidth(firstLeaf);
- var secondLeafRatio = this.getPageHeight(secondLeaf) / this.getPageWidth(secondLeaf);
- //console.log('firstLeafRatio = ' + firstLeafRatio + ' secondLeafRatio = ' + secondLeafRatio);
+ var first = {
+ height: this.getPageHeight(firstIndex),
+ width: this.getPageWidth(firstIndex)
+ }
+
+ var second = {
+ height: this.getPageHeight(secondIndex),
+ width: this.getPageWidth(secondIndex)
+ }
+
+ var firstIndexRatio = first.height / first.width;
+ var secondIndexRatio = second.height / second.width;
+ //console.log('firstIndexRatio = ' + firstIndexRatio + ' secondIndexRatio = ' + secondIndexRatio);
var ratio;
- if (Math.abs(firstLeafRatio - canon5Dratio) < Math.abs(secondLeafRatio - canon5Dratio)) {
- ratio = firstLeafRatio;
- //console.log('using firstLeafRatio ' + ratio);
+ if (Math.abs(firstIndexRatio - canon5Dratio) < Math.abs(secondIndexRatio - canon5Dratio)) {
+ ratio = firstIndexRatio;
+ //console.log('using firstIndexRatio ' + ratio);
} else {
- ratio = secondLeafRatio;
- //console.log('using secondLeafRatio ' + ratio);
+ ratio = secondIndexRatio;
+ //console.log('using secondIndexRatio ' + ratio);
}
var totalLeafEdgeWidth = parseInt(this.numLeafs * 0.1);
- var maxLeafEdgeWidth = parseInt($('#GBcontainer').width() * 0.1);
- totalLeafEdgeWidth = Math.min(totalLeafEdgeWidth, maxLeafEdgeWidth);
+ var maxLeafEdgeWidth = parseInt($('#GBcontainer').attr('clientWidth') * 0.1);
+ ideal.totalLeafEdgeWidth = Math.min(totalLeafEdgeWidth, maxLeafEdgeWidth);
- $('#GBcontainer').css('overflow', 'hidden');
-
- var idealWidth = ($('#GBcontainer').width() - 30 - totalLeafEdgeWidth)>>1;
- var idealHeight = $('#GBcontainer').height() - 30;
- //console.log('init idealWidth='+idealWidth+' idealHeight='+idealHeight + ' ratio='+ratio);
+ var widthOutsidePages = 2 * (this.twoPage.coverInternalPadding + this.twoPage.coverExternalPadding) + ideal.totalLeafEdgeWidth;
+ var heightOutsidePages = 2* (this.twoPage.coverInternalPadding + this.twoPage.coverExternalPadding);
+
+ ideal.width = ($('#GBcontainer').width() - widthOutsidePages) >> 1;
+ ideal.width -= 10; // $$$ fudge factor
+ ideal.height = $('#GBcontainer').height() - heightOutsidePages;
+ ideal.height -= 20; // fudge factor
+ //console.log('init idealWidth='+ideal.width+' idealHeight='+ideal.height + ' ratio='+ratio);
- if (idealHeight/ratio <= idealWidth) {
+ if (ideal.height/ratio <= ideal.width) {
//use height
- idealWidth = parseInt(idealHeight/ratio);
+ ideal.width = parseInt(ideal.height/ratio);
} else {
//use width
- idealHeight = parseInt(idealWidth*ratio);
+ ideal.height = parseInt(ideal.width*ratio);
}
+
+ // $$$ check this logic with large spreads
+ ideal.reduce = ((first.height + second.height) / 2) / ideal.height;
+
+ return ideal;
+}
+
+// getSpreadSizeFromReduce()
+//______________________________________________________________________________
+// Returns the spread size calculated from the reduction factor for the given pages
+GnuBook.prototype.getSpreadSizeFromReduce = function(firstIndex, secondIndex, reduce) {
+ var spreadSize = {};
+ // $$$ Scale this based on reduce?
+ var totalLeafEdgeWidth = parseInt(this.numLeafs * 0.1);
+ var maxLeafEdgeWidth = parseInt($('#GBcontainer').attr('clientWidth') * 0.1); // $$$ Assumes leaf edge width constant at all zoom levels
+ spreadSize.totalLeafEdgeWidth = Math.min(totalLeafEdgeWidth, maxLeafEdgeWidth);
+
+ // $$$ Possibly incorrect -- we should make height "dominant"
+ var nativeWidth = this.getPageWidth(firstIndex) + this.getPageWidth(secondIndex);
+ var nativeHeight = this.getPageHeight(firstIndex) + this.getPageHeight(secondIndex);
+ spreadSize.height = parseInt( (nativeHeight / 2) / this.reduce );
+ spreadSize.width = parseInt( (nativeWidth / 2) / this.reduce );
+ spreadSize.reduce = reduce;
+
+ return spreadSize;
+}
- this.twoPageH = idealHeight;
- this.twoPageW = idealWidth;
- this.twoPageRatio = ratio;
- this.twoPageEdgeW = totalLeafEdgeWidth; // The combined width of both edges
+// twoPageGetAutofitReduce()
+//______________________________________________________________________________
+// Returns the current ideal reduction factor
+GnuBook.prototype.twoPageGetAutofitReduce = function() {
+ var spreadSize = this.getIdealSpreadSize(this.twoPage.currentIndexL, this.twoPage.currentIndexR);
+ return spreadSize.reduce;
+}
+
+// twoPageSetCursor()
+//______________________________________________________________________________
+// Set the cursor for two page view
+GnuBook.prototype.twoPageSetCursor = function() {
+ // console.log('setting cursor');
+ if ( ($('#GBtwopageview').width() > $('#GBcontainer').attr('clientWidth')) ||
+ ($('#GBtwopageview').height() > $('#GBcontainer').attr('clientHeight')) ) {
+ $(this.prefetchedImgs[this.twoPage.currentIndexL]).css('cursor','move');
+ $(this.prefetchedImgs[this.twoPage.currentIndexR]).css('cursor','move');
+ } else {
+ $(this.prefetchedImgs[this.twoPage.currentIndexL]).css('cursor','');
+ $(this.prefetchedImgs[this.twoPage.currentIndexR]).css('cursor','');
+ }
+}
+// currentIndex()
+//______________________________________________________________________________
+// Returns the currently active index.
+GnuBook.prototype.currentIndex = function() {
+ // $$$ we should be cleaner with our idea of which index is active in 1up/2up
+ if (this.mode == this.constMode1up || this.mode == this.constMode2up || this.mode == this.constModeThumb) {
+ return this.firstIndex;
+ } else {
+ throw 'currentIndex called for unimplemented mode ' + this.mode;
+ }
}
// right()
}
}
+// rightmost()
+//______________________________________________________________________________
+// Flip to the rightmost page
+GnuBook.prototype.rightmost = function() {
+ if ('rl' != this.pageProgression) {
+ gb.last();
+ } else {
+ gb.first();
+ }
+}
+
// left()
//______________________________________________________________________________
// Flip the left page over onto the right.
}
}
+// leftmost()
+//______________________________________________________________________________
+// Flip to the leftmost page
+GnuBook.prototype.leftmost = function() {
+ if ('rl' != this.pageProgression) {
+ gb.first();
+ } else {
+ gb.last();
+ }
+}
+
// next()
//______________________________________________________________________________
GnuBook.prototype.next = function() {
}
}
-GnuBook.prototype.home = function() {
+GnuBook.prototype.first = function() {
if (2 == this.mode) {
this.jumpToIndex(2);
}
}
}
-GnuBook.prototype.end = function() {
+GnuBook.prototype.last = function() {
if (2 == this.mode) {
this.jumpToIndex(this.lastDisplayableIndex());
}
GnuBook.prototype.flipBackToIndex = function(index) {
if (1 == this.mode) return;
- var leftIndex = this.currentLeafL;
+ var leftIndex = this.twoPage.currentIndexL;
// $$$ Need to change this to be able to see first spread.
// See https://bugs.launchpad.net/gnubook/+bug/296788
if ('rl' != this.pageProgression) {
// Assume LTR and we are going backward
- var gutter = this.prepareFlipLeftToRight(previousIndices[0], previousIndices[1]);
- this.flipLeftToRight(previousIndices[0], previousIndices[1], gutter);
-
+ this.prepareFlipLeftToRight(previousIndices[0], previousIndices[1]);
+ this.flipLeftToRight(previousIndices[0], previousIndices[1]);
} else {
// RTL and going backward
var gutter = this.prepareFlipRightToLeft(previousIndices[0], previousIndices[1]);
// flipLeftToRight()
//______________________________________________________________________________
// Flips the page on the left towards the page on the right
-GnuBook.prototype.flipLeftToRight = function(newIndexL, newIndexR, gutter) {
+GnuBook.prototype.flipLeftToRight = function(newIndexL, newIndexR) {
- var leftLeaf = this.currentLeafL;
+ var leftLeaf = this.twoPage.currentIndexL;
- var oldLeafEdgeWidthL = this.leafEdgeWidth(this.currentLeafL);
+ var oldLeafEdgeWidthL = this.leafEdgeWidth(this.twoPage.currentIndexL);
var newLeafEdgeWidthL = this.leafEdgeWidth(newIndexL);
var leafEdgeTmpW = oldLeafEdgeWidthL - newLeafEdgeWidthL;
var newWidthL = this.getPageWidth2UP(newIndexL);
var newWidthR = this.getPageWidth2UP(newIndexR);
- var top = ($('#GBcontainer').height() - this.twoPageH) >> 1;
-
+ var top = this.twoPageTop();
+ var gutter = this.twoPage.middle + this.gutterOffsetForIndex(newIndexL);
+
//console.log('leftEdgeTmpW ' + leafEdgeTmpW);
//console.log(' gutter ' + gutter + ', scaledWL ' + scaledWL + ', newLeafEdgeWL ' + newLeafEdgeWidthL);
// 4. After step 3 is finished, do the following:
// - remove leafEdgeTmp from the dom.
// - resize and move the right leaf edge (leafEdgeR) to left=gutter+newWidthR
- // and width=twoPageEdgeW-newLeafEdgeWidthL.
+ // and width=twoPage.edgeWidth-newLeafEdgeWidthL.
// - resize and move the left leaf edge (leafEdgeL) to left=gutter-newWidthL-newLeafEdgeWidthL
// and width=newLeafEdgeWidthL.
- // - resize the back cover (twoPageDiv) to left=gutter-newWidthL-newLeafEdgeWidthL-10
- // and width=newWidthL+newWidthR+twoPageEdgeW+20
+ // - resize the back cover (twoPage.coverDiv) to left=gutter-newWidthL-newLeafEdgeWidthL-10
+ // and width=newWidthL+newWidthR+twoPage.edgeWidth+20
// - move new left leaf (newIndexL) forward to zindex=2 so it can receive clicks.
// - remove old left and right leafs from the dom [pruneUnusedImgs()].
// - prefetch new adjacent leafs.
borderStyle: 'solid none solid solid',
borderColor: 'rgb(51, 51, 34)',
borderWidth: '1px 0px 1px 1px',
- background: 'transparent url(images/left_edges.png) repeat scroll 0% 0%',
+ background: 'transparent url(' + this.imagesBaseURL + 'left_edges.png) repeat scroll 0% 0%',
width: leafEdgeTmpW + 'px',
- height: this.twoPageH-1 + 'px',
+ height: this.twoPage.height-1 + 'px',
left: leftEdgeTmpLeft + 'px',
top: top+'px',
position: 'absolute',
zIndex:1000
- }).appendTo('#GBcontainer');
+ }).appendTo('#GBtwopageview');
//$(this.leafEdgeL).css('width', newLeafEdgeWidthL+'px');
$(this.leafEdgeL).css({
// Left gets the offset of the current left leaf from the document
var left = $(this.prefetchedImgs[leftLeaf]).offset().left;
// $$$ This seems very similar to the gutter. May be able to consolidate the logic.
- var right = $('#GBcontainer').width()-left-$(this.prefetchedImgs[leftLeaf]).width()+$('#GBcontainer').offset().left-2+'px';
+ var right = $('#GBtwopageview').attr('clientWidth')-left-$(this.prefetchedImgs[leftLeaf]).width()+$('#GBtwopageview').offset().left-2+'px';
+
// We change the left leaf to right positioning
+ // $$$ This causes animation glitches during resize. See https://bugs.edge.launchpad.net/gnubook/+bug/328327
$(this.prefetchedImgs[leftLeaf]).css({
right: right,
left: ''
});
- left = $(this.prefetchedImgs[leftLeaf]).offset().left - $('#book_div_1').offset().left;
-
- right = left+$(this.prefetchedImgs[leftLeaf]).width()+'px';
-
$(this.leafEdgeTmp).animate({left: gutter}, this.flipSpeed, 'easeInSine');
//$(this.prefetchedImgs[leftLeaf]).animate({width: '0px'}, 'slow', 'easeInSine');
//console.log(' animating newIndexR ' + newIndexR + ' to ' + newWidthR + ' from ' + $(self.prefetchedImgs[newIndexR]).width());
$(self.prefetchedImgs[newIndexR]).animate({width: newWidthR+'px'}, self.flipSpeed, 'easeOutSine', function() {
$(self.prefetchedImgs[newIndexL]).css('zIndex', 2);
-
+
$(self.leafEdgeR).css({
// Moves the right leaf edge
- width: self.twoPageEdgeW-newLeafEdgeWidthL+'px',
+ width: self.twoPage.edgeWidth-newLeafEdgeWidthL+'px',
left: gutter+newWidthR+'px'
});
left: gutter-newWidthL-newLeafEdgeWidthL+'px'
});
-
- $(self.twoPageDiv).css({
- // Resizes the brown border div
- width: newWidthL+newWidthR+self.twoPageEdgeW+20+'px',
- left: gutter-newWidthL-newLeafEdgeWidthL-10+'px'
+ // Resizes the brown border div
+ $(self.twoPage.coverDiv).css({
+ width: self.twoPageCoverWidth(newWidthL+newWidthR)+'px',
+ left: gutter-newWidthL-newLeafEdgeWidthL-self.twoPage.coverInternalPadding+'px'
});
$(self.leafEdgeTmp).remove();
self.leafEdgeTmp = null;
+
+ // $$$ TODO refactor with opposite direction flip
- self.currentLeafL = newIndexL;
- self.currentLeafR = newIndexR;
- self.displayedLeafs = [newIndexL, newIndexR];
- self.setClickHandlers();
+ self.twoPage.currentIndexL = newIndexL;
+ self.twoPage.currentIndexR = newIndexR;
+ self.twoPage.scaledWL = newWidthL;
+ self.twoPage.scaledWR = newWidthR;
+ self.twoPage.gutter = gutter;
+
+ self.firstIndex = self.twoPage.currentIndexL;
+ self.displayedIndices = [newIndexL, newIndexR];
self.pruneUnusedImgs();
- self.prefetch();
+ self.prefetch();
self.animating = false;
self.updateSearchHilites2UP();
self.updatePageNumBox2UP();
- //$('#GBzoom').text((self.twoPageH/self.getPageHeight(newIndexL)).toString().substr(0,4));
+
+ // self.twoPagePlaceFlipAreas(); // No longer used
+ self.setMouseHandlers2UP();
+ self.twoPageSetCursor();
+
+ if (self.animationFinishedCallback) {
+ self.animationFinishedCallback();
+ self.animationFinishedCallback = null;
+ }
});
});
}
if (null == index) {
- index = this.currentLeafR+2; // $$$ assumes indices are continuous
+ index = this.twoPage.currentIndexR+2; // $$$ assumes indices are continuous
}
if (index > this.lastDisplayableIndex()) return;
} else {
// RTL
var gutter = this.prepareFlipLeftToRight(nextIndices[0], nextIndices[1]);
- this.flipLeftToRight(nextIndices[0], nextIndices[1], gutter);
+ this.flipLeftToRight(nextIndices[0], nextIndices[1]);
}
}
// $$$ better not to have to pass gutter in
//______________________________________________________________________________
// Flip from left to right and show the nextL and nextR indices on those sides
-GnuBook.prototype.flipRightToLeft = function(newIndexL, newIndexR, gutter) {
- var oldLeafEdgeWidthL = this.leafEdgeWidth(this.currentLeafL);
- var oldLeafEdgeWidthR = this.twoPageEdgeW-oldLeafEdgeWidthL;
+GnuBook.prototype.flipRightToLeft = function(newIndexL, newIndexR) {
+ var oldLeafEdgeWidthL = this.leafEdgeWidth(this.twoPage.currentIndexL);
+ var oldLeafEdgeWidthR = this.twoPage.edgeWidth-oldLeafEdgeWidthL;
var newLeafEdgeWidthL = this.leafEdgeWidth(newIndexL);
- var newLeafEdgeWidthR = this.twoPageEdgeW-newLeafEdgeWidthL;
+ var newLeafEdgeWidthR = this.twoPage.edgeWidth-newLeafEdgeWidthL;
var leafEdgeTmpW = oldLeafEdgeWidthR - newLeafEdgeWidthR;
- var top = ($('#GBcontainer').height() - this.twoPageH) >> 1;
-
- var scaledW = this.getPageWidth2UP(this.currentLeafR);
-
- var middle = ($('#GBcontainer').width() >> 1);
- var currGutter = middle + this.gutterOffsetForIndex(this.currentLeafL);
+ var top = this.twoPageTop();
+ var scaledW = this.getPageWidth2UP(this.twoPage.currentIndexR);
+ var middle = this.twoPage.middle;
+ var gutter = middle + this.gutterOffsetForIndex(newIndexL);
+
this.leafEdgeTmp = document.createElement('div');
$(this.leafEdgeTmp).css({
borderStyle: 'solid none solid solid',
borderColor: 'rgb(51, 51, 34)',
borderWidth: '1px 0px 1px 1px',
- background: 'transparent url(images/left_edges.png) repeat scroll 0% 0%',
+ background: 'transparent url(' + this.imagesBaseURL + 'left_edges.png) repeat scroll 0% 0%',
width: leafEdgeTmpW + 'px',
- height: this.twoPageH-1 + 'px',
- left: currGutter+scaledW+'px',
+ height: this.twoPage.height-1 + 'px',
+ left: gutter+scaledW+'px',
top: top+'px',
position: 'absolute',
zIndex:1000
- }).appendTo('#GBcontainer');
+ }).appendTo('#GBtwopageview');
//var scaledWR = this.getPageWidth2UP(newIndexR); // $$$ should be current instead?
//var scaledWL = this.getPageWidth2UP(newIndexL); // $$$ should be current instead?
- var currWidthL = this.getPageWidth2UP(this.currentLeafL);
- var currWidthR = this.getPageWidth2UP(this.currentLeafR);
+ var currWidthL = this.getPageWidth2UP(this.twoPage.currentIndexL);
+ var currWidthR = this.getPageWidth2UP(this.twoPage.currentIndexR);
var newWidthL = this.getPageWidth2UP(newIndexL);
var newWidthR = this.getPageWidth2UP(newIndexR);
-
+
$(this.leafEdgeR).css({width: newLeafEdgeWidthR+'px', left: gutter+newWidthR+'px' });
var self = this; // closure-tastic!
this.removeSearchHilites();
$(this.leafEdgeTmp).animate({left: gutter}, speed, 'easeInSine');
- $(this.prefetchedImgs[this.currentLeafR]).animate({width: '0px'}, speed, 'easeInSine', function() {
+ $(this.prefetchedImgs[this.twoPage.currentIndexR]).animate({width: '0px'}, speed, 'easeInSine', function() {
$(self.leafEdgeTmp).animate({left: gutter-newWidthL-leafEdgeTmpW+'px'}, speed, 'easeOutSine');
$(self.prefetchedImgs[newIndexL]).animate({width: newWidthL+'px'}, speed, 'easeOutSine', function() {
$(self.prefetchedImgs[newIndexR]).css('zIndex', 2);
-
+
$(self.leafEdgeL).css({
width: newLeafEdgeWidthL+'px',
left: gutter-newWidthL-newLeafEdgeWidthL+'px'
});
- $(self.twoPageDiv).css({
- width: newWidthL+newWidthR+self.twoPageEdgeW+20+'px',
- left: gutter-newWidthL-newLeafEdgeWidthL-10+'px'
+ // Resizes the book cover
+ $(self.twoPage.coverDiv).css({
+ width: self.twoPageCoverWidth(newWidthL+newWidthR)+'px',
+ left: gutter - newWidthL - newLeafEdgeWidthL - self.twoPage.coverInternalPadding + 'px'
});
$(self.leafEdgeTmp).remove();
self.leafEdgeTmp = null;
- self.currentLeafL = newIndexL;
- self.currentLeafR = newIndexR;
- self.displayedLeafs = [newIndexL, newIndexR];
- self.setClickHandlers();
+ self.twoPage.currentIndexL = newIndexL;
+ self.twoPage.currentIndexR = newIndexR;
+ self.twoPage.scaledWL = newWidthL;
+ self.twoPage.scaledWR = newWidthR;
+ self.twoPage.gutter = gutter;
+
+ self.firstIndex = self.twoPage.currentIndexL;
+ self.displayedIndices = [newIndexL, newIndexR];
self.pruneUnusedImgs();
self.prefetch();
self.animating = false;
+
self.updateSearchHilites2UP();
self.updatePageNumBox2UP();
- //$('#GBzoom').text((self.twoPageH/self.getPageHeight(newIndexL)).toString().substr(0,4));
+
+ // self.twoPagePlaceFlipAreas(); // No longer used
+ self.setMouseHandlers2UP();
+ self.twoPageSetCursor();
+
+ if (self.animationFinishedCallback) {
+ self.animationFinishedCallback();
+ self.animationFinishedCallback = null;
+ }
});
});
}
-// setClickHandlers
+// setMouseHandlers2UP
//______________________________________________________________________________
-GnuBook.prototype.setClickHandlers = function() {
- var self = this;
- $(this.prefetchedImgs[this.currentLeafL]).click(function() {
+GnuBook.prototype.setMouseHandlers2UP = function() {
+ /*
+ $(this.prefetchedImgs[this.twoPage.currentIndexL]).bind('dblclick', function() {
//self.prevPage();
self.autoStop();
self.left();
});
- $(this.prefetchedImgs[this.currentLeafR]).click(function() {
+ $(this.prefetchedImgs[this.twoPage.currentIndexR]).bind('dblclick', function() {
//self.nextPage();'
self.autoStop();
self.right();
});
+ */
+
+ this.setDragHandler2UP( this.prefetchedImgs[this.twoPage.currentIndexL] );
+ this.setClickHandler2UP( this.prefetchedImgs[this.twoPage.currentIndexL],
+ { self: this },
+ function(e) {
+ e.data.self.left();
+ }
+ );
+
+ this.setDragHandler2UP( this.prefetchedImgs[this.twoPage.currentIndexR] );
+ this.setClickHandler2UP( this.prefetchedImgs[this.twoPage.currentIndexR],
+ { self: this },
+ function(e) {
+ e.data.self.right();
+ }
+ );
}
// prefetchImg()
//______________________________________________________________________________
-GnuBook.prototype.prefetchImg = function(leafNum) {
- if (undefined == this.prefetchedImgs[leafNum]) {
- //console.log('prefetching ' + leafNum);
+GnuBook.prototype.prefetchImg = function(index) {
+ var pageURI = this.getPageURI(index);
+
+ // Load image if not loaded or URI has changed (e.g. due to scaling)
+ var loadImage = false;
+ if (undefined == this.prefetchedImgs[index]) {
+ //console.log('no image for ' + index);
+ loadImage = true;
+ } else if (pageURI != this.prefetchedImgs[index].uri) {
+ //console.log('uri changed for ' + index);
+ loadImage = true;
+ }
+
+ if (loadImage) {
+ //console.log('prefetching ' + index);
var img = document.createElement("img");
- img.src = this.getPageURI(leafNum);
- this.prefetchedImgs[leafNum] = img;
+ img.src = pageURI;
+ img.uri = pageURI; // browser may rewrite src so we stash raw URI here
+ this.prefetchedImgs[index] = img;
}
}
var height = this.getPageHeight(prevL);
var width = this.getPageWidth(prevL);
- var middle = ($('#GBcontainer').width() >> 1);
- var top = ($('#GBcontainer').height() - this.twoPageH) >> 1;
- var scaledW = this.twoPageH*width/height;
+ var middle = this.twoPage.middle;
+ var top = this.twoPageTop();
+ var scaledW = this.twoPage.height*width/height; // $$$ assumes height of page is dominant
// The gutter is the dividing line between the left and right pages.
// It is offset from the middle to create the illusion of thickness to the pages
$(this.prefetchedImgs[prevL]).css({
position: 'absolute',
- /*right: middle+'px',*/
left: gutter-scaledW+'px',
- right: '',
+ right: '', // clear right property
top: top+'px',
backgroundColor: 'rgb(234, 226, 205)',
- height: this.twoPageH,
+ height: this.twoPage.height,
width: scaledW+'px',
borderRight: '1px solid black',
zIndex: 1
});
- $('#GBcontainer').append(this.prefetchedImgs[prevL]);
+ $('#GBtwopageview').append(this.prefetchedImgs[prevL]);
//console.log(' changing prevR ' + prevR + ' to left: ' + gutter + ' width: 0');
right: '',
top: top+'px',
backgroundColor: 'rgb(234, 226, 205)',
- height: this.twoPageH,
+ height: this.twoPage.height,
width: '0px',
borderLeft: '1px solid black',
zIndex: 2
});
- $('#GBcontainer').append(this.prefetchedImgs[prevR]);
-
-
- return gutter;
+ $('#GBtwopageview').append(this.prefetchedImgs[prevR]);
}
+// $$$ mang we're adding an extra pixel in the middle. See https://bugs.edge.launchpad.net/gnubook/+bug/411667
// prepareFlipRightToLeft()
//______________________________________________________________________________
GnuBook.prototype.prepareFlipRightToLeft = function(nextL, nextR) {
//console.log(' preparing left<-right for ' + nextL + ',' + nextR);
+ // Prefetch images
this.prefetchImg(nextL);
this.prefetchImg(nextR);
var height = this.getPageHeight(nextR);
var width = this.getPageWidth(nextR);
- var middle = ($('#GBcontainer').width() >> 1);
- var top = ($('#GBcontainer').height() - this.twoPageH) >> 1;
- var scaledW = this.twoPageH*width/height;
+ var middle = this.twoPage.middle;
+ var top = this.twoPageTop();
+ var scaledW = this.twoPage.height*width/height;
var gutter = middle + this.gutterOffsetForIndex(nextL);
-
- //console.log('right to left to %d gutter is %d', nextL, gutter);
-
+
//console.log(' prepareRTL changing nextR ' + nextR + ' to left: ' + gutter);
$(this.prefetchedImgs[nextR]).css({
position: 'absolute',
left: gutter+'px',
top: top+'px',
backgroundColor: 'rgb(234, 226, 205)',
- height: this.twoPageH,
+ height: this.twoPage.height,
width: scaledW+'px',
borderLeft: '1px solid black',
zIndex: 1
});
- $('#GBcontainer').append(this.prefetchedImgs[nextR]);
+ $('#GBtwopageview').append(this.prefetchedImgs[nextR]);
height = this.getPageHeight(nextL);
width = this.getPageWidth(nextL);
- scaledW = this.twoPageH*width/height;
+ scaledW = this.twoPage.height*width/height;
//console.log(' prepareRTL changing nextL ' + nextL + ' to right: ' + $('#GBcontainer').width()-gutter);
$(this.prefetchedImgs[nextL]).css({
position: 'absolute',
- right: $('#GBcontainer').width()-gutter+'px',
+ right: $('#GBtwopageview').attr('clientWidth')-gutter+'px',
top: top+'px',
backgroundColor: 'rgb(234, 226, 205)',
- height: this.twoPageH,
- width: 0+'px',
+ height: this.twoPage.height,
+ width: 0+'px', // Start at 0 width, then grow to the left
borderRight: '1px solid black',
zIndex: 2
});
- $('#GBcontainer').append(this.prefetchedImgs[nextL]);
-
- return gutter;
+ $('#GBtwopageview').append(this.prefetchedImgs[nextL]);
}
// //TODO: we might have two left or two right leafs in a row (damaged book)
// //For now, assume that leafs are contiguous.
//
-// //return [this.currentLeafL+2, this.currentLeafL+3];
-// o.L = this.currentLeafL+2;
-// o.R = this.currentLeafL+3;
+// //return [this.twoPage.currentIndexL+2, this.twoPage.currentIndexL+3];
+// o.L = this.twoPage.currentIndexL+2;
+// o.R = this.twoPage.currentIndexL+3;
// }
// getprevLeafs() -- NOT RTL AWARE
// //TODO: we might have two left or two right leafs in a row (damaged book)
// //For now, assume that leafs are contiguous.
//
-// //return [this.currentLeafL-2, this.currentLeafL-1];
-// o.L = this.currentLeafL-2;
-// o.R = this.currentLeafL-1;
+// //return [this.twoPage.currentIndexL-2, this.twoPage.currentIndexL-1];
+// o.L = this.twoPage.currentIndexL-2;
+// o.R = this.twoPage.currentIndexL-1;
// }
// pruneUnusedImgs()
//______________________________________________________________________________
GnuBook.prototype.pruneUnusedImgs = function() {
- //console.log('current: ' + this.currentLeafL + ' ' + this.currentLeafR);
+ //console.log('current: ' + this.twoPage.currentIndexL + ' ' + this.twoPage.currentIndexR);
for (var key in this.prefetchedImgs) {
//console.log('key is ' + key);
- if ((key != this.currentLeafL) && (key != this.currentLeafR)) {
+ if ((key != this.twoPage.currentIndexL) && (key != this.twoPage.currentIndexR)) {
//console.log('removing key '+ key);
$(this.prefetchedImgs[key]).remove();
}
- if ((key < this.currentLeafL-4) || (key > this.currentLeafR+4)) {
+ if ((key < this.twoPage.currentIndexL-4) || (key > this.twoPage.currentIndexR+4)) {
//console.log('deleting key '+ key);
delete this.prefetchedImgs[key];
}
//______________________________________________________________________________
GnuBook.prototype.prefetch = function() {
- var lim = this.currentLeafL-4;
+ // prefetch visible pages first
+ this.prefetchImg(this.twoPage.currentIndexL);
+ this.prefetchImg(this.twoPage.currentIndexR);
+
+ var adjacentPagesToLoad = 3;
+
+ var lowCurrent = Math.min(this.twoPage.currentIndexL, this.twoPage.currentIndexR);
+ var highCurrent = Math.max(this.twoPage.currentIndexL, this.twoPage.currentIndexR);
+
+ var start = Math.max(lowCurrent - adjacentPagesToLoad, 0);
+ var end = Math.min(highCurrent + adjacentPagesToLoad, this.numLeafs - 1);
+
+ // Load images spreading out from current
+ for (var i = 1; i <= adjacentPagesToLoad; i++) {
+ var goingDown = lowCurrent - i;
+ if (goingDown >= start) {
+ this.prefetchImg(goingDown);
+ }
+ var goingUp = highCurrent + i;
+ if (goingUp <= end) {
+ this.prefetchImg(goingUp);
+ }
+ }
+
+ /*
+ var lim = this.twoPage.currentIndexL-4;
var i;
lim = Math.max(lim, 0);
- for (i = lim; i < this.currentLeafL; i++) {
+ for (i = lim; i < this.twoPage.currentIndexL; i++) {
this.prefetchImg(i);
}
- if (this.numLeafs > (this.currentLeafR+1)) {
- lim = Math.min(this.currentLeafR+4, this.numLeafs-1);
- for (i=this.currentLeafR+1; i<=lim; i++) {
+ if (this.numLeafs > (this.twoPage.currentIndexR+1)) {
+ lim = Math.min(this.twoPage.currentIndexR+4, this.numLeafs-1);
+ for (i=this.twoPage.currentIndexR+1; i<=lim; i++) {
this.prefetchImg(i);
}
}
+ */
}
// getPageWidth2UP()
//______________________________________________________________________________
GnuBook.prototype.getPageWidth2UP = function(index) {
+ // We return the width based on the dominant height
var height = this.getPageHeight(index);
var width = this.getPageWidth(index);
- return Math.floor(this.twoPageH*width/height);
+ return Math.floor(this.twoPage.height*width/height); // $$$ we assume width is relative to current spread
}
// search()
var script = document.createElement("script");
script.setAttribute('id', 'GnuBookSearchScript');
script.setAttribute("type", "text/javascript");
- script.setAttribute("src", 'http://'+this.server+'/GnuBook/flipbook_search_gb.php?url='+escape(this.bookPath+'/'+this.bookId+'_djvu.xml')+'&term='+term+'&format=XML&callback=gb.GBSearchCallback');
+ script.setAttribute("src", 'http://'+this.server+'/GnuBook/flipbook_search_gb.php?url='+escape(this.bookPath + '_djvu.xml')+'&term='+term+'&format=XML&callback=gb.GBSearchCallback');
document.getElementsByTagName('head')[0].appendChild(script);
+ $('#GnuBookSearchResults').html('Searching...');
}
// GBSearchCallback()
var re = new RegExp (/_(\d{4})/);
var reMatch = re.exec(pages[i].getAttribute('file'));
- var leafNum = parseInt(reMatch[1], 10);
- //var leafNum = parseInt(pages[i].getAttribute('file').substr(1), 10);
+ var index = parseInt(reMatch[1], 10);
+ //var index = parseInt(pages[i].getAttribute('file').substr(1), 10);
var children = pages[i].childNodes;
var context = '';
} else if ('WORD' == children[j].nodeName) {
context += '<b>'+children[j].firstChild.nodeValue+'</b>';
- var index = this.leafNumToIndex(leafNum);
+ var index = this.leafNumToIndex(index);
if (null != index) {
//coordinates are [left, bottom, right, top, [baseline]]
//we'll skip baseline for now...
}
}
}
+ var pageName = this.getPageName(index);
//TODO: remove hardcoded instance name
- $('#GnuBookSearchResults').append('<li><b><a href="javascript:gb.jumpToIndex('+index+');">Leaf ' + leafNum + '</a></b> - ' + context+'</li>');
+ $('#GnuBookSearchResults').append('<li><b><a href="javascript:gb.jumpToIndex('+index+');">' + pageName + '</a></b> - ' + context + '</li>');
}
}
$('#GnuBookSearchResults').append('</ul>');
for (var key in this.searchResults) {
- if (-1 != jQuery.inArray(parseInt(key), this.displayedLeafs)) {
+ if (-1 != jQuery.inArray(parseInt(key), this.displayedIndices)) {
var result = this.searchResults[key];
if(null == result.div) {
result.div = document.createElement('div');
}
}
+// twoPageGutter()
+//______________________________________________________________________________
+// Returns the position of the gutter (line between the page images)
+GnuBook.prototype.twoPageGutter = function() {
+ return this.twoPage.middle + this.gutterOffsetForIndex(this.twoPage.currentIndexL);
+}
+
+// twoPageTop()
+//______________________________________________________________________________
+// Returns the offset for the top of the page images
+GnuBook.prototype.twoPageTop = function() {
+ return this.twoPage.coverExternalPadding + this.twoPage.coverInternalPadding; // $$$ + border?
+}
+
+// twoPageCoverWidth()
+//______________________________________________________________________________
+// Returns the width of the cover div given the total page width
+GnuBook.prototype.twoPageCoverWidth = function(totalPageWidth) {
+ return totalPageWidth + this.twoPage.edgeWidth + 2*this.twoPage.coverInternalPadding;
+}
+
+// twoPageGetViewCenter()
+//______________________________________________________________________________
+// Returns the percentage offset into twopageview div at the center of container div
+// { percentageX: float, percentageY: float }
+GnuBook.prototype.twoPageGetViewCenter = function() {
+ var center = {};
+
+ var containerOffset = $('#GBcontainer').offset();
+ var viewOffset = $('#GBtwopageview').offset();
+ center.percentageX = (containerOffset.left - viewOffset.left + ($('#GBcontainer').attr('clientWidth') >> 1)) / this.twoPage.totalWidth;
+ center.percentageY = (containerOffset.top - viewOffset.top + ($('#GBcontainer').attr('clientHeight') >> 1)) / this.twoPage.totalHeight;
+
+ return center;
+}
+
+// twoPageCenterView(percentageX, percentageY)
+//______________________________________________________________________________
+// Centers the point given by percentage from left,top of twopageview
+GnuBook.prototype.twoPageCenterView = function(percentageX, percentageY) {
+ if ('undefined' == typeof(percentageX)) {
+ percentageX = 0.5;
+ }
+ if ('undefined' == typeof(percentageY)) {
+ percentageY = 0.5;
+ }
+
+ var viewWidth = $('#GBtwopageview').width();
+ var containerClientWidth = $('#GBcontainer').attr('clientWidth');
+ var intoViewX = percentageX * viewWidth;
+
+ var viewHeight = $('#GBtwopageview').height();
+ var containerClientHeight = $('#GBcontainer').attr('clientHeight');
+ var intoViewY = percentageY * viewHeight;
+
+ if (viewWidth < containerClientWidth) {
+ // Can fit width without scrollbars - center by adjusting offset
+ $('#GBtwopageview').css('left', (containerClientWidth >> 1) - intoViewX + 'px');
+ } else {
+ // Need to scroll to center
+ $('#GBtwopageview').css('left', 0);
+ $('#GBcontainer').scrollLeft(intoViewX - (containerClientWidth >> 1));
+ }
+
+ if (viewHeight < containerClientHeight) {
+ // Fits with scrollbars - add offset
+ $('#GBtwopageview').css('top', (containerClientHeight >> 1) - intoViewY + 'px');
+ } else {
+ $('#GBtwopageview').css('top', 0);
+ $('#GBcontainer').scrollTop(intoViewY - (containerClientHeight >> 1));
+ }
+}
+
+// twoPageFlipAreaHeight
+//______________________________________________________________________________
+// Returns the integer height of the click-to-flip areas at the edges of the book
+GnuBook.prototype.twoPageFlipAreaHeight = function() {
+ return parseInt(this.twoPage.height);
+}
+
+// twoPageFlipAreaWidth
+//______________________________________________________________________________
+// Returns the integer width of the flip areas
+GnuBook.prototype.twoPageFlipAreaWidth = function() {
+ var max = 100; // $$$ TODO base on view width?
+ var min = 10;
+
+ var width = this.twoPage.width * 0.15;
+ return parseInt(GnuBook.util.clamp(width, min, max));
+}
+
+// twoPageFlipAreaTop
+//______________________________________________________________________________
+// Returns integer top offset for flip areas
+GnuBook.prototype.twoPageFlipAreaTop = function() {
+ return parseInt(this.twoPage.bookCoverDivTop + this.twoPage.coverInternalPadding);
+}
+
+// twoPageLeftFlipAreaLeft
+//______________________________________________________________________________
+// Left offset for left flip area
+GnuBook.prototype.twoPageLeftFlipAreaLeft = function() {
+ return parseInt(this.twoPage.gutter - this.twoPage.scaledWL);
+}
+
+// twoPageRightFlipAreaLeft
+//______________________________________________________________________________
+// Left offset for right flip area
+GnuBook.prototype.twoPageRightFlipAreaLeft = function() {
+ return parseInt(this.twoPage.gutter + this.twoPage.scaledWR - this.twoPageFlipAreaWidth());
+}
+
+// twoPagePlaceFlipAreas
+//______________________________________________________________________________
+// Readjusts position of flip areas based on current layout
+GnuBook.prototype.twoPagePlaceFlipAreas = function() {
+ // We don't set top since it shouldn't change relative to view
+ $(this.twoPage.leftFlipArea).css({
+ left: this.twoPageLeftFlipAreaLeft() + 'px',
+ width: this.twoPageFlipAreaWidth() + 'px'
+ });
+ $(this.twoPage.rightFlipArea).css({
+ left: this.twoPageRightFlipAreaLeft() + 'px',
+ width: this.twoPageFlipAreaWidth() + 'px'
+ });
+}
+
// showSearchHilites2UP()
//______________________________________________________________________________
GnuBook.prototype.updateSearchHilites2UP = function() {
- var middle = ($('#GBcontainer').width() >> 1);
-
for (var key in this.searchResults) {
key = parseInt(key, 10);
- if (-1 != jQuery.inArray(key, this.displayedLeafs)) {
+ if (-1 != jQuery.inArray(key, this.displayedIndices)) {
var result = this.searchResults[key];
if(null == result.div) {
result.div = document.createElement('div');
- $(result.div).attr('className', 'GnuBookSearchHilite').css('zIndex', 3).appendTo('#GBcontainer');
+ $(result.div).attr('className', 'GnuBookSearchHilite').css('zIndex', 3).appendTo('#GBtwopageview');
//console.log('appending ' + key);
}
+ // We calculate the reduction factor for the specific page because it can be different
+ // for each page in the spread
var height = this.getPageHeight(key);
var width = this.getPageWidth(key)
- var reduce = this.twoPageH/height;
+ var reduce = this.twoPage.height/height;
var scaledW = parseInt(width*reduce);
- var gutter = middle + this.gutterOffsetForIndex(this.currentLeafL);
-
+ var gutter = this.twoPageGutter();
+ var pageL;
if ('L' == this.getPageSide(key)) {
- var pageL = gutter-scaledW;
+ pageL = gutter-scaledW;
} else {
- var pageL = gutter;
+ pageL = gutter;
}
- var pageT = ($('#GBcontainer').height() - this.twoPageH) >> 1;
-
+ var pageT = this.twoPageTop();
+
$(result.div).css({
width: (result.r-result.l)*reduce + 'px',
height: (result.b-result.t)*reduce + 'px',
$(this.embedPopup).css({
position: 'absolute',
top: '20px',
- left: ($('#GBcontainer').width()-400)/2 + 'px',
+ left: ($('#GBcontainer').attr('clientWidth')-400)/2 + 'px',
width: '400px',
padding: "20px",
border: "3px double #999999",
}).appendTo('#GnuBook');
htmlStr = '<p style="text-align:center;"><b>Embed Bookreader in your blog!</b></p>';
- htmlStr += '<p><b>Note:</b> The bookreader is still in beta testing. URLs may change in the future, breaking embedded books. This feature is just for testing!</b></p>';
htmlStr += '<p>The bookreader uses iframes for embedding. It will not work on web hosts that block iframes. The embed feature has been tested on blogspot.com blogs as well as self-hosted Wordpress blogs. This feature will NOT work on wordpress.com blogs.</p>';
- htmlStr += '<p>Embed Code: <input type="text" size="40" value="<iframe src=\'http://www.us.archive.org/GnuBook/GnuBookEmbed.php?id='+this.bookId+'\' width=\'430px\' height=\'430px\'></iframe>"></p>';
+ htmlStr += '<p>Embed Code: <input type="text" size="40" value="' + this.getEmbedCode() + '"></p>';
htmlStr += '<p style="text-align:center;"><a href="" onclick="gb.embedPopup = null; $(this.parentNode.parentNode).remove(); return false">Close popup</a></p>';
- this.embedPopup.innerHTML = htmlStr;
+ this.embedPopup.innerHTML = htmlStr;
+ $(this.embedPopup).find('input').bind('click', function() {
+ this.select();
+ })
}
// autoToggle()
bComingFrom1up = true;
this.switchMode(2);
}
+
+ // Change to autofit if book is too large
+ if (this.reduce < this.twoPageGetAutofitReduce()) {
+ this.zoom2up(0);
+ }
var self = this;
if (null == this.autoTimer) {
this.autoTimer=setInterval(function(){
if (self.animating) {return;}
- if (Math.max(self.currentLeafL, self.currentLeafR) >= self.lastDisplayableIndex()) {
+ if (Math.max(self.twoPage.currentIndexL, self.twoPage.currentIndexR) >= self.lastDisplayableIndex()) {
self.flipBackToIndex(1); // $$$ really what we want?
} else {
self.flipFwdToIndex();
// autoStop()
//______________________________________________________________________________
+// Stop autoplay mode, allowing animations to finish
GnuBook.prototype.autoStop = function() {
if (null != this.autoTimer) {
clearInterval(this.autoTimer);
}
}
+// stopFlipAnimations
+//______________________________________________________________________________
+// Immediately stop flip animations. Callbacks are triggered.
+GnuBook.prototype.stopFlipAnimations = function() {
+
+ this.autoStop(); // Clear timers
+
+ // Stop animation, clear queue, trigger callbacks
+ if (this.leafEdgeTmp) {
+ $(this.leafEdgeTmp).stop(false, true);
+ }
+ jQuery.each(this.prefetchedImgs, function() {
+ $(this).stop(false, true);
+ });
+
+ // And again since animations also queued in callbacks
+ if (this.leafEdgeTmp) {
+ $(this.leafEdgeTmp).stop(false, true);
+ }
+ jQuery.each(this.prefetchedImgs, function() {
+ $(this).stop(false, true);
+ });
+
+}
+
// keyboardNavigationIsDisabled(event)
// - returns true if keyboard navigation should be disabled for the event
//______________________________________________________________________________
// To find the offset of the gutter from the middle we calculate our percentage distance
// through the book (0..1), remap to (-0.5..0.5) and multiply by the total page edge width
- var offset = parseInt(((pindex / this.numLeafs) - 0.5) * this.twoPageEdgeW);
+ var offset = parseInt(((pindex / this.numLeafs) - 0.5) * this.twoPage.edgeWidth);
// But then again for RTL it's the opposite
if ('rl' == this.pageProgression) {
GnuBook.prototype.leafEdgeWidth = function(pindex) {
// $$$ could there be single pixel rounding errors for L vs R?
if ((this.getPageSide(pindex) == 'L') && (this.pageProgression != 'rl')) {
- return parseInt( (pindex/this.numLeafs) * this.twoPageEdgeW + 0.5);
+ return parseInt( (pindex/this.numLeafs) * this.twoPage.edgeWidth + 0.5);
} else {
- return parseInt( (1 - pindex/this.numLeafs) * this.twoPageEdgeW + 0.5);
+ return parseInt( (1 - pindex/this.numLeafs) * this.twoPage.edgeWidth + 0.5);
}
}
GnuBook.prototype.jumpIndexForLeftEdgePageX = function(pageX) {
if ('rl' != this.pageProgression) {
// LTR - flipping backward
- var jumpLeaf = this.currentLeafL - ($(this.leafEdgeL).offset().left + $(this.leafEdgeL).width() - pageX) * 10;
- // browser may have resized the div due to font size change -- see https://bugs.launchpad.net/gnubook/+bug/333570
- jumpLeaf = Math.min(jumpLeaf, this.currentLeafL - 2);
- jumpLeaf = Math.max(jumpLeaf, this.firstDisplayableIndex());
- return jumpLeaf;
+ var jumpIndex = this.twoPage.currentIndexL - ($(this.leafEdgeL).offset().left + $(this.leafEdgeL).width() - pageX) * 10;
+
+ // browser may have resized the div due to font size change -- see https://bugs.launchpad.net/gnubook/+bug/333570
+ jumpIndex = GnuBook.util.clamp(Math.round(jumpIndex), this.firstDisplayableIndex(), this.twoPage.currentIndexL - 2);
+ return jumpIndex;
+
} else {
- var jumpLeaf = this.currentLeafL + ($(this.leafEdgeL).offset().left + $(this.leafEdgeL).width() - pageX) * 10;
- jumpLeaf = Math.max(jumpLeaf, this.currentLeafL + 2);
- jumpLeaf = Math.min(jumpLeaf, this.lastDisplayableIndex());
- return jumpLeaf;
+ var jumpIndex = this.twoPage.currentIndexL + ($(this.leafEdgeL).offset().left + $(this.leafEdgeL).width() - pageX) * 10;
+ jumpIndex = GnuBook.util.clamp(Math.round(jumpIndex), this.twoPage.currentIndexL + 2, this.lastDisplayableIndex());
+ return jumpIndex;
}
}
GnuBook.prototype.jumpIndexForRightEdgePageX = function(pageX) {
if ('rl' != this.pageProgression) {
// LTR
- var jumpLeaf = this.currentLeafR + (pageX - $(this.leafEdgeR).offset().left) * 10;
- jumpLeaf = Math.max(jumpLeaf, this.currentLeafR + 2);
- jumpLeaf = Math.min(jumpLeaf, this.lastDisplayableIndex());
- return jumpLeaf;
+ var jumpIndex = this.twoPage.currentIndexR + (pageX - $(this.leafEdgeR).offset().left) * 10;
+ jumpIndex = GnuBook.util.clamp(Math.round(jumpIndex), this.twoPage.currentIndexR + 2, this.lastDisplayableIndex());
+ return jumpIndex;
} else {
- var jumpLeaf = this.currentLeafR - (pageX - $(this.leafEdgeR).offset().left) * 10;
- jumpLeaf = Math.min(jumpLeaf, this.currentLeafR - 2);
- jumpLeaf = Math.max(jumpLeaf, this.firstDisplayableIndex());
- return jumpLeaf;
+ var jumpIndex = this.twoPage.currentIndexR - (pageX - $(this.leafEdgeR).offset().left) * 10;
+ jumpIndex = GnuBook.util.clamp(Math.round(jumpIndex), this.firstDisplayableIndex(), this.twoPage.currentIndexR - 2);
+ return jumpIndex;
}
}
-GnuBook.prototype.initToolbar = function(mode) {
+GnuBook.prototype.initToolbar = function(mode, ui) {
+
$("#GnuBook").append("<div id='GBtoolbar'><span style='float:left;'>"
+ "<a class='GBicon logo rollover' href='" + this.logoURL + "'> </a>"
- + " <button class='GBicon rollover zoom_out' onclick='gb.zoom1up(-1); return false;'/>"
- + "<button class='GBicon rollover zoom_in' onclick='gb.zoom1up(1); return false;'/>"
- + " <span class='label'>Zoom: <span id='GBzoom'>25</span>%</span>"
+ + " <button class='GBicon rollover zoom_out' onclick='gb.zoom(-1); return false;'/>"
+ + "<button class='GBicon rollover zoom_in' onclick='gb.zoom(1); return false;'/>"
+ + " <span class='label'>Zoom: <span id='GBzoom'>"+parseInt(100/this.reduce)+"</span></span>"
+ " <button class='GBicon rollover one_page_mode' onclick='gb.switchMode(1); return false;'/>"
+ " <button class='GBicon rollover two_page_mode' onclick='gb.switchMode(2); return false;'/>"
- + " <a class='GBblack title' href='"+this.bookUrl+"' target='_blank'>"+this.shortTitle(50)+"</a>"
+ + " <button class='GBicon rollover thumbnail_mode' onclick='gb.switchMode(3); return false;'/>"
+ + " <a class='GBblack title' href='"+this.bookUrl+"' target='_blank'>"+this.shortTitle(50)+"</a>"
+ "</span></div>");
+
+ this.updateToolbarZoom(this.reduce); // Pretty format
+
+ if (ui == "embed") {
+ $("#GnuBook a.logo").attr("target","_blank");
+ }
// $$$ turn this into a member variable
var jToolbar = $('#GBtoolbar'); // j prefix indicates jQuery object
jToolbar.append("<span id='GBtoolbarbuttons' style='float: right'>"
+ "<button class='GBicon rollover embed' />"
+ "<form class='GBpageform' action='javascript:' onsubmit='gb.jumpToPage(this.elements[0].value)'> <span class='label'>Page:<input id='GBpagenum' type='text' size='3' onfocus='gb.autoStop();'></input></span></form>"
- + "<div class='GBtoolbarmode2' style='display: inline'><button class='GBicon rollover book_left' /><button class='GBicon rollover book_right' /></div>"
- + "<div class='GBtoolbarmode1' style='display: hidden'><button class='GBicon rollover book_up' /> <button class='GBicon rollover book_down' /></div>"
+ + "<div class='GBtoolbarmode2' style='display: none'><button class='GBicon rollover book_leftmost' /><button class='GBicon rollover book_left' /><button class='GBicon rollover book_right' /><button class='GBicon rollover book_rightmost' /></div>"
+ + "<div class='GBtoolbarmode1' style='display: none'><button class='GBicon rollover book_top' /><button class='GBicon rollover book_up' /> <button class='GBicon rollover book_down' /><button class='GBicon rollover book_bottom' /></div>"
+ "<button class='GBicon rollover play' /><button class='GBicon rollover pause' style='display: none' /></span>");
- // Bind the non-changing click handlers
- jToolbar.find('.embed').bind('click', function(e) {
- gb.showEmbedCode();
- return false;
- });
- jToolbar.find('.play').bind('click', function(e) {
- gb.autoToggle();
- return false;
- });
- jToolbar.find('.pause').bind('click', function(e) {
- gb.autoToggle();
- return false;
- });
+ this.bindToolbarNavHandlers(jToolbar);
// Setup tooltips -- later we could load these from a file for i18n
var titles = { '.logo': 'Go to Archive.org',
'.zoom_out': 'Zoom out',
'.one_page_mode': 'One-page view',
'.two_page_mode': 'Two-page view',
+ '.thumbnail_mode': 'Thumbnail view',
'.embed': 'Embed bookreader',
'.book_left': 'Flip left',
'.book_right': 'Flip right',
'.book_up': 'Page up',
'.book_down': 'Page down',
'.play': 'Play',
- '.pause': 'Pause'
- };
+ '.pause': 'Pause',
+ '.book_top': 'First page',
+ '.book_bottom': 'Last page'
+ };
+ if ('rl' == this.pageProgression) {
+ titles['.book_leftmost'] = 'Last page';
+ titles['.book_rightmost'] = 'First page';
+ } else { // LTR
+ titles['.book_leftmost'] = 'First page';
+ titles['.book_rightmost'] = 'Last page';
+ }
+
for (var icon in titles) {
jToolbar.find(icon).attr('title', titles[icon]);
}
+
+ // Hide mode buttons and autoplay if 2up is not available
+ // $$$ if we end up with more than two modes we should show the applicable buttons
+ if ( !this.canSwitchToMode(this.constMode2up) ) {
+ jToolbar.find('.one_page_mode, .two_page_mode, .play, .pause').hide();
+ }
// Switch to requested mode -- binds other click handlers
this.switchToolbarMode(mode);
if (1 == mode) {
// 1-up
$('#GBtoolbar .GBtoolbarmode2').hide();
- $('#GBtoolbar .GBtoolbarmode1').css('display', 'inline').show();
+ $('#GBtoolbar .GBtoolbarmode1').show().css('display', 'inline');
} else {
// 2-up
$('#GBtoolbar .GBtoolbarmode1').hide();
- $('#GBtoolbar .GBtoolbarmode2').css('display', 'inline').show();
+ $('#GBtoolbar .GBtoolbarmode2').show().css('display', 'inline');
}
-
- this.bindToolbarNavHandlers($('#GBtoolbar'));
}
// bindToolbarNavHandlers
// Binds the toolbar handlers
GnuBook.prototype.bindToolbarNavHandlers = function(jToolbar) {
- jToolbar.find('.book_left').unbind('click')
- .bind('click', function(e) {
- gb.left();
- return false;
- });
+ jToolbar.find('.book_left').bind('click', function(e) {
+ gb.left();
+ return false;
+ });
- jToolbar.find('.book_right').unbind('click')
- .bind('click', function(e) {
- gb.right();
- return false;
- });
+ jToolbar.find('.book_right').bind('click', function(e) {
+ gb.right();
+ return false;
+ });
- jToolbar.find('.book_up').unbind('click')
- .bind('click', function(e) {
- gb.prev();
- return false;
- });
+ jToolbar.find('.book_up').bind('click', function(e) {
+ gb.prev();
+ return false;
+ });
- jToolbar.find('.book_down').unbind('click')
- .bind('click', function(e) {
- gb.next();
- return false;
- });
+ jToolbar.find('.book_down').bind('click', function(e) {
+ gb.next();
+ return false;
+ });
+
+ jToolbar.find('.embed').bind('click', function(e) {
+ gb.showEmbedCode();
+ return false;
+ });
+
+ jToolbar.find('.play').bind('click', function(e) {
+ gb.autoToggle();
+ return false;
+ });
+
+ jToolbar.find('.pause').bind('click', function(e) {
+ gb.autoToggle();
+ return false;
+ });
+
+ jToolbar.find('.book_top').bind('click', function(e) {
+ gb.first();
+ return false;
+ });
+
+ jToolbar.find('.book_bottom').bind('click', function(e) {
+ gb.last();
+ return false;
+ });
+
+ jToolbar.find('.book_leftmost').bind('click', function(e) {
+ gb.leftmost();
+ return false;
+ });
+
+ jToolbar.find('.book_rightmost').bind('click', function(e) {
+ gb.rightmost();
+ return false;
+ });
+}
+
+// updateToolbarZoom(reduce)
+//______________________________________________________________________________
+// Update the displayed zoom factor based on reduction factor
+GnuBook.prototype.updateToolbarZoom = function(reduce) {
+ var value;
+ if (this.constMode2up == this.mode && this.twoPage.autofit) {
+ value = 'Auto';
+ } else {
+ value = (100 / reduce).toFixed(2);
+ // Strip trailing zeroes and decimal if all zeroes
+ value = value.replace(/0+$/,'');
+ value = value.replace(/\.$/,'');
+ value += '%';
+ }
+ $('#GBzoom').text(value);
}
// firstDisplayableIndex
var title = this.bookTitle.substr(0, maximumCharacters - 3);
title += '...';
return title;
+}
+
+
+
+// Parameter related functions
+
+// updateFromParams(params)
+//________
+// Update ourselves from the params object.
+//
+// e.g. this.updateFromParams(this.paramsFromFragment(window.location.hash))
+GnuBook.prototype.updateFromParams = function(params) {
+ if ('undefined' != typeof(params.mode)) {
+ this.switchMode(params.mode);
+ }
+
+ // $$$ process /search
+ // $$$ process /zoom
+
+ // We only respect page if index is not set
+ if ('undefined' != typeof(params.index)) {
+ if (params.index != this.currentIndex()) {
+ this.jumpToIndex(params.index);
+ }
+ } else if ('undefined' != typeof(params.page)) {
+ // $$$ this assumes page numbers are unique
+ if (params.page != this.getPageNum(this.currentIndex())) {
+ this.jumpToPage(params.page);
+ }
+ }
+
+ // $$$ process /region
+ // $$$ process /highlight
+}
+
+// paramsFromFragment(urlFragment)
+//________
+// Returns a object with configuration parametes from a URL fragment.
+//
+// E.g paramsFromFragment(window.location.hash)
+GnuBook.prototype.paramsFromFragment = function(urlFragment) {
+ // URL fragment syntax specification: http://openlibrary.org/dev/docs/bookurls
+
+ var params = {};
+
+ // For convenience we allow an initial # character (as from window.location.hash)
+ // but don't require it
+ if (urlFragment.substr(0,1) == '#') {
+ urlFragment = urlFragment.substr(1);
+ }
+
+ // Simple #nn syntax
+ var oldStyleLeafNum = parseInt( /^\d+$/.exec(urlFragment) );
+ if ( !isNaN(oldStyleLeafNum) ) {
+ params.index = oldStyleLeafNum;
+
+ // Done processing if using old-style syntax
+ return params;
+ }
+
+ // Split into key-value pairs
+ var urlArray = urlFragment.split('/');
+ var urlHash = {};
+ for (var i = 0; i < urlArray.length; i += 2) {
+ urlHash[urlArray[i]] = urlArray[i+1];
+ }
+
+ // Mode
+ if ('1up' == urlHash['mode']) {
+ params.mode = this.constMode1up;
+ } else if ('2up' == urlHash['mode']) {
+ params.mode = this.constMode2up;
+ } else if ('thumb' == urlHash['mode']) {
+ params.mode = this.constModeThumb;
+ }
+
+ // Index and page
+ if ('undefined' != typeof(urlHash['page'])) {
+ // page was set -- may not be int
+ params.page = urlHash['page'];
+ }
+
+ // $$$ process /region
+ // $$$ process /search
+ // $$$ process /highlight
+
+ return params;
+}
+
+// paramsFromCurrent()
+//________
+// Create a params object from the current parameters.
+GnuBook.prototype.paramsFromCurrent = function() {
+
+ var params = {};
+
+ var pageNum = this.getPageNum(this.currentIndex());
+ if ((pageNum === 0) || pageNum) {
+ params.page = pageNum;
+ }
+
+ params.index = this.currentIndex();
+ params.mode = this.mode;
+
+ // $$$ highlight
+ // $$$ region
+ // $$$ search
+
+ return params;
+}
+
+// fragmentFromParams(params)
+//________
+// Create a fragment string from the params object.
+// See http://openlibrary.org/dev/docs/bookurls for an explanation of the fragment syntax.
+GnuBook.prototype.fragmentFromParams = function(params) {
+ var separator = '/';
+
+ var fragments = [];
+
+ if ('undefined' != typeof(params.page)) {
+ fragments.push('page', params.page);
+ } else {
+ // Don't have page numbering -- use index instead
+ fragments.push('page', 'n' + params.index);
+ }
+
+ // $$$ highlight
+ // $$$ region
+ // $$$ search
+
+ // mode
+ if ('undefined' != typeof(params.mode)) {
+ if (params.mode == this.constMode1up) {
+ fragments.push('mode', '1up');
+ } else if (params.mode == this.constMode2up) {
+ fragments.push('mode', '2up');
+ } else if (params.mode == this.constModeThumb) {
+ fragments.push('mode', 'thumb');
+ } else {
+ throw 'fragmentFromParams called with unknown mode ' + params.mode;
+ }
+ }
+
+ return fragments.join(separator);
+}
+
+// getPageIndex(pageNum)
+//________
+// Returns the *highest* index the given page number, or undefined
+GnuBook.prototype.getPageIndex = function(pageNum) {
+ var pageIndices = this.getPageIndices(pageNum);
+
+ if (pageIndices.length > 0) {
+ return pageIndices[pageIndices.length - 1];
+ }
+
+ return undefined;
+}
+
+// getPageIndices(pageNum)
+//________
+// Returns an array (possibly empty) of the indices with the given page number
+GnuBook.prototype.getPageIndices = function(pageNum) {
+ var indices = [];
+
+ // Check for special "nXX" page number
+ if (pageNum.slice(0,1) == 'n') {
+ try {
+ var pageIntStr = pageNum.slice(1, pageNum.length);
+ var pageIndex = parseInt(pageIntStr);
+ indices.append(pageIndex);
+ return indices;
+ } catch(err) {
+ // Do nothing... will run through page names and see if one matches
+ }
+ }
+
+ var i;
+ for (i=0; i<this.numLeafs; i++) {
+ if (this.getPageNum(i) == pageNum) {
+ indices.push(i);
+ }
+ }
+
+ return indices;
+}
+
+// getPageName(index)
+//________
+// Returns the name of the page as it should be displayed in the user interface
+GnuBook.prototype.getPageName = function(index) {
+ return 'Page ' + this.getPageNum(index);
+}
+
+// updateLocationHash
+//________
+// Update the location hash from the current parameters. Call this instead of manually
+// using window.location.replace
+GnuBook.prototype.updateLocationHash = function() {
+ var newHash = '#' + this.fragmentFromParams(this.paramsFromCurrent());
+ window.location.replace(newHash);
+
+ // This is the variable checked in the timer. Only user-generated changes
+ // to the URL will trigger the event.
+ this.oldLocationHash = newHash;
+}
+
+// startLocationPolling
+//________
+// Starts polling of window.location to see hash fragment changes
+GnuBook.prototype.startLocationPolling = function() {
+ var self = this; // remember who I am
+ self.oldLocationHash = window.location.hash;
+
+ if (this.locationPollId) {
+ clearInterval(this.locationPollID);
+ this.locationPollId = null;
+ }
+
+ this.locationPollId = setInterval(function() {
+ var newHash = window.location.hash;
+ if (newHash != self.oldLocationHash) {
+ if (newHash != self.oldUserHash) { // Only process new user hash once
+ //console.log('url change detected ' + self.oldLocationHash + " -> " + newHash);
+
+ // Queue change if animating
+ if (self.animating) {
+ self.autoStop();
+ self.animationFinishedCallback = function() {
+ self.updateFromParams(self.paramsFromFragment(newHash));
+ }
+ } else { // update immediately
+ self.updateFromParams(self.paramsFromFragment(newHash));
+ }
+ self.oldUserHash = newHash;
+ }
+ }
+ }, 500);
+}
+
+// getEmbedURL
+//________
+// Returns a URL for an embedded version of the current book
+GnuBook.prototype.getEmbedURL = function() {
+ // We could generate a URL hash fragment here but for now we just leave at defaults
+ return 'http://' + window.location.host + '/stream/'+this.bookId + '?ui=embed';
+}
+
+// getEmbedCode
+//________
+// Returns the embed code HTML fragment suitable for copy and paste
+GnuBook.prototype.getEmbedCode = function() {
+ return "<iframe src='" + this.getEmbedURL() + "' width='480px' height='430px'></iframe>";
+}
+
+// canSwitchToMode
+//________
+// Returns true if we can switch to the requested mode
+GnuBook.prototype.canSwitchToMode = function(mode) {
+ if (mode == this.constMode2up) {
+ // check there are enough pages to display
+ // $$$ this is a workaround for the mis-feature that we can't display
+ // short books in 2up mode
+ if (this.numLeafs < 6) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+// Library functions
+GnuBook.util = {
+ clamp: function(value, min, max) {
+ return Math.min(Math.max(value, min), max);
+ }
}
\ No newline at end of file
projects / bookreader.git / blobdiff