// GnuBook()
//______________________________________________________________________________
// After you instantiate this object, you must supply the following
-// book-specific functions, before calling init():
+// book-specific functions, before calling init(). Some of these functions
+// can just be stubs for simple books.
// - getPageWidth()
// - getPageHeight()
// - getPageURI()
+// - getPageSide()
+// - canRotatePage()
+// - getPageNum()
+// - getSpreadIndices()
// You must also add a numLeafs property before calling init().
-//XXX
-if (typeof(console) == 'undefined') {
- console = { log: function(msg) { } };
-}
-
function GnuBook() {
this.reduce = 4;
this.padding = 10;
- this.mode = 1; //1 or 2
+ this.mode = 1; //1, 2, 3
this.ui = 'full'; // UI mode
-
+ this.thumbScale = 10; // thumbnail default
+ this.thumbRowBuffer = 4; // number of rows to pre-cache out a view
+
this.displayedIndices = [];
+ this.displayedRows=[];
//this.indicesToDisplay = [];
this.imgs = {};
this.prefetchedImgs = {}; //an object with numeric keys cooresponding to page index
this.twoPagePopUp = null;
this.leafEdgeTmp = null;
this.embedPopup = null;
+ this.printPopup = null;
+ this.searchTerm = '';
this.searchResults = {};
this.firstIndex = null;
// 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
bookSpineDivWidth: 30, // Width of book spine $$$ consider sizing based on book length
autofit: true
};
+
+ // Background color for pages (e.g. when loading page image)
+ // $$$ TODO dynamically calculate based on page images
+ this.pageDefaultBackgroundColor = 'rgb(234, 226, 205)';
};
// init()
GnuBook.prototype.init = function() {
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);
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();
this.firstIndex = startIndex;
this.jumpToIndex(startIndex);
+ } else if (3 == this.mode) {
+ this.firstIndex = startIndex;
+ this.prepareThumbnailView();
+ this.jumpToIndex(startIndex);
} else {
//this.resizePageView();
//console.log('titleLeaf: %d', this.titleLeaf);
//console.log('displayedIndices: %s', this.displayedIndices);
this.prepareTwoPageView();
- //if (this.auto) this.nextPage();
}
// Enact other parts of initial 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) {
- self.prev();
- }
- break;
- case KEY_DOWN:
- case KEY_PGDOWN:
- if (2 == self.mode) {
- self.next();
- }
- break;
- case KEY_END:
- self.last();
- break;
- case KEY_HOME:
- self.first();
- break;
- case KEY_LEFT:
- if (self.keyboardNavigationIsDisabled(e)) {
+ if (!self.keyboardNavigationIsDisabled(e)) {
+ 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;
- }
- if (2 == self.mode) {
- self.left();
- }
- break;
- case KEY_RIGHT:
- if (self.keyboardNavigationIsDisabled(e)) {
+ case KEY_DOWN:
+ case KEY_PGDOWN:
+ if (2 == self.mode) {
+ e.preventDefault();
+ self.next();
+ }
break;
- }
- if (2 == self.mode) {
- self.right();
- }
- break;
+ case KEY_END:
+ e.preventDefault();
+ self.last();
+ break;
+ case KEY_HOME:
+ e.preventDefault();
+ self.first();
+ break;
+ case KEY_LEFT:
+ if (2 == self.mode) {
+ e.preventDefault();
+ self.left();
+ }
+ break;
+ case KEY_RIGHT:
+ 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).unbind('mousemove mouseup');
+ 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.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 leafTop = 0;
var leafBottom = 0;
for (i=0; i<this.numLeafs; i++) {
- var height = parseInt(this.getPageHeight(i)/this.reduce);
+ var height = parseInt(this._getPageHeight(i)/this.reduce);
leafBottom += height;
//console.log('leafTop = '+leafTop+ ' pageH = ' + this.pageH[i] + 'leafTop>=scrollTop=' + (leafTop>=scrollTop));
leafTop = 0;
var i;
for (i=0; i<firstIndexToDraw; i++) {
- leafTop += parseInt(this.getPageHeight(i)/this.reduce) +10;
+ leafTop += parseInt(this._getPageHeight(i)/this.reduce) +10;
}
//var viewWidth = $('#GBpageview').width(); //includes scroll bar width
for (i=0; i<indicesToDisplay.length; i++) {
var index = indicesToDisplay[i];
- var height = parseInt(this.getPageHeight(index)/this.reduce);
+ var height = parseInt(this._getPageHeight(index)/this.reduce);
if(-1 == jQuery.inArray(indicesToDisplay[i], this.displayedIndices)) {
- var width = parseInt(this.getPageWidth(index)/this.reduce);
+ var width = parseInt(this._getPageWidth(index)/this.reduce);
//console.log("displaying leaf " + indicesToDisplay[i] + ' leafTop=' +leafTop);
var div = document.createElement("div");
div.className = 'GBpagediv1up';
$(div).css('height', height+'px');
//$(div).text('loading...');
- this.setDragHandler1up(div);
+ this.setDragHandler(div);
$('#GBpageview').append(div);
var img = document.createElement("img");
- img.src = this.getPageURI(index);
+ img.src = this._getPageURI(index, this.reduce, 0);
$(img).css('width', width+'px');
$(img).css('height', height+'px');
$(div).append(img);
}
+// drawLeafsThumbnail()
+//______________________________________________________________________________
+GnuBook.prototype.drawLeafsThumbnail = function() {
+ //alert('drawing leafs!');
+ this.timer = null;
+
+ 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];
+ for (i=1; i<this.thumbRowBuffer+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() {
- console.log('drawing two leafs!'); // XXX
-
var scrollTop = $('#GBtwopageview').attr('scrollTop');
var scrollBottom = scrollTop + $('#GBtwopageview').height();
- console.log('drawLeafsTwoPage: this.currrentLeafL ' + this.twoPage.currentIndexL); // XXX
+ // $$$ we should use calculated values in this.twoPage (recalc if necessary)
var indexL = this.twoPage.currentIndexL;
- var heightL = this.getPageHeight(indexL);
- var widthL = this.getPageWidth(indexL);
+
+ var heightL = this._getPageHeight(indexL);
+ var widthL = this._getPageWidth(indexL);
var leafEdgeWidthL = this.leafEdgeWidth(indexL);
var leafEdgeWidthR = this.twoPage.edgeWidth - leafEdgeWidthL;
var top = this.twoPageTop();
var bookCoverDivLeft = this.twoPage.bookCoverDivLeft;
- // $$$ should get getwidth2up?
- //var scaledWL = parseInt(this.twoPage.height*widthL/heightL);
- var scaledWL = this.getPageWidth2UP(indexL);
- var gutter = this.twoPageGutter();
+ this.twoPage.scaledWL = this.getPageWidth2UP(indexL);
+ this.twoPage.gutter = this.twoPageGutter();
this.prefetchImg(indexL);
$(this.prefetchedImgs[indexL]).css({
position: 'absolute',
- left: gutter-scaledWL+'px',
+ left: this.twoPage.gutter-this.twoPage.scaledWL+'px',
right: '',
top: top+'px',
- backgroundColor: 'rgb(234, 226, 205)',
+ backgroundColor: this.getPageBackgroundColor(indexL),
height: this.twoPage.height +'px', // $$$ height forced the same for both pages
- width: scaledWL + 'px',
+ width: this.twoPage.scaledWL + 'px',
borderRight: '1px solid black',
zIndex: 2
}).appendTo('#GBtwopageview');
-
-
+
var indexR = this.twoPage.currentIndexR;
- var heightR = this.getPageHeight(indexR);
- var widthR = this.getPageWidth(indexR);
+ var heightR = this._getPageHeight(indexR);
+ var widthR = this._getPageWidth(indexR);
// $$$ should use getwidth2up?
//var scaledWR = this.twoPage.height*widthR/heightR;
- var scaledWR = this.getPageWidth2UP(indexR);
+ 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)',
+ backgroundColor: this.getPageBackgroundColor(indexR),
height: this.twoPage.height + 'px', // $$$ height forced the same for both pages
- width: scaledWR + 'px',
+ width: this.twoPage.scaledWR + 'px',
borderLeft: '1px solid black',
zIndex: 2
}).appendTo('#GBtwopageview');
this.displayedIndices = [this.twoPage.currentIndexL, this.twoPage.currentIndexR];
- this.setClickHandlers();
+ 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.twoPage.currentIndexL)) {
- $("#GBpagenum").val(this.getPageNum(this.twoPage.currentIndexL));
+ $("#GBpagenum").val(this.getPageNum(this.currentIndex()));
} else {
$("#GBpagenum").val('');
}
// zoom1up(dir)
//______________________________________________________________________________
GnuBook.prototype.zoom1up = function(dir) {
+
if (2 == this.mode) { //can only zoom in 1-page mode
this.switchMode(1);
return;
if (this.reduce >= 8) return;
this.reduce*=2; //zoom out
}
-
+
+ this.pageScale = this.reduce; // preserve current reduce
this.resizePageView();
$('#GBpageview').empty()
this.loadLeafs();
this.updateToolbarZoom(this.reduce);
+
+ // Recalculate search hilites
+ this.removeSearchHilites();
+ this.updateSearchHilites();
+
}
// resizePageView()
}
for (i=0; i<this.numLeafs; i++) {
- viewHeight += parseInt(this.getPageHeight(i)/this.reduce) + this.padding;
- var width = parseInt(this.getPageWidth(i)/this.reduce);
+ viewHeight += parseInt(this._getPageHeight(i)/this.reduce) + this.padding;
+ var width = parseInt(this._getPageWidth(i)/this.reduce);
if (width>viewWidth) viewWidth=width;
}
$('#GBpageview').height(viewHeight);
//this.centerPageView();
this.loadLeafs();
+ // Not really needed until there is 1up autofit
+ this.removeSearchHilites();
+ this.updateSearchHilites();
}
// centerX1up()
// zoom2up(direction)
//______________________________________________________________________________
GnuBook.prototype.zoom2up = function(direction) {
- // $$$ this is where we can e.g. snap to %2 sizes
- if (0 == direction) { // autofit mode
- this.twoPage.autofit = true;;
- } else if (1 == direction) {
- if (this.reduce <= 0.5) return;
- this.reduce*=0.5; //zoom in
- this.twoPage.autofit = false;
- } else {
- if (this.reduce >= 8) return;
- this.reduce *= 2; // zoom out
- this.twoPage.autofit = false;
+
+ // 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;
+ }
}
- this.prepareTwoPageView();
+ return result;
}
// jumpToPage()
// jumpToIndex()
//______________________________________________________________________________
-GnuBook.prototype.jumpToIndex = function(index) {
+GnuBook.prototype.jumpToIndex = function(index, pageX, pageY) {
if (2 == this.mode) {
this.autoStop();
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 leafLeft = 0;
var h;
for (i=0; i<index; i++) {
- h = parseInt(this.getPageHeight(i)/this.reduce);
+ h = parseInt(this._getPageHeight(i)/this.reduce);
leafTop += h + this.padding;
}
+
+ if (pageY) {
+ //console.log('pageY ' + pageY);
+ var offset = parseInt( (pageY) / this.reduce);
+ offset -= $('#GBcontainer').attr('clientHeight') >> 1;
+ //console.log( 'jumping to ' + leafTop + ' ' + offset);
+ leafTop += offset;
+ }
+
+ if (pageX) {
+ var offset = parseInt( (pageX) / this.reduce);
+ offset -= $('#GBcontainer').attr('clientWidth') >> 1;
+ leafLeft += offset;
+ }
+
//$('#GBcontainer').attr('scrollTop', leafTop);
- $('#GBcontainer').animate({scrollTop: leafTop },'fast');
+ $('#GBcontainer').animate({scrollTop: leafTop, scrollLeft: leafLeft },'fast');
}
}
-
// switchMode()
//______________________________________________________________________________
GnuBook.prototype.switchMode = function(mode) {
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); // $$$ TODO preserve center
}
}
// Bind mouse handlers
// Disable mouse click to avoid selected/highlighted page images - bug 354239
gbPageView.bind('mousedown', function(e) {
+ // $$$ 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; };
+}
+
+//prepareThumbnailView()
+//______________________________________________________________________________
+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) {
+ // $$$ check here for right-click and don't disable. Also use jQuery style
+ // for stopping propagation. See https://bugs.edge.launchpad.net/gnubook/+bug/362626
return false;
})
// Special hack for IE7
// The two page view div is resized to keep the middle of the book in the middle of the div
// even as the page sizes change. To e.g. keep the middle of the book in the middle of the GBcontent
// div requires adjusting the offset of GBtwpageview and/or scrolling in GBcontent.
-GnuBook.prototype.prepareTwoPageView = function() {
+GnuBook.prototype.prepareTwoPageView = function(centerPercentageX, centerPercentageY) {
$('#GBcontainer').empty();
$('#GBcontainer').css('overflow', 'auto');
-
- // Add the two page view
- $('#GBcontainer').append('<div id="GBtwopageview"></div>');
- // Explicitly set sizes the same
- // $$$ calculate first then set
- $('#GBtwopageview').css( {
- height: $('#GBcontainer').height(),
- width: $('#GBcontainer').width(),
- position: 'absolute'
- });
-
+
// 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
targetLeaf = this.lastDisplayableIndex();
}
- this.twoPage.currentIndexL = null;
- this.twoPage.currentIndexR = null;
- this.pruneUnusedImgs();
+ //this.twoPage.currentIndexL = null;
+ //this.twoPage.currentIndexR = null;
+ //this.pruneUnusedImgs();
var currentSpreadIndices = this.getSpreadIndices(targetLeaf);
this.twoPage.currentIndexL = currentSpreadIndices[0];
this.twoPage.currentIndexR = currentSpreadIndices[1];
this.firstIndex = this.twoPage.currentIndexL;
- this.calculateSpreadSize(); //sets twoPage.width, twoPage.height, and twoPage.ratio
-
- $('#GBtwopageview').width(this.twoPage.totalWidth).height(this.twoPage.totalHeight);
+ this.calculateSpreadSize(); //sets twoPage.width, twoPage.height and others
+
+ this.pruneUnusedImgs();
+ this.prefetch(); // Preload images or reload if scaling has changed
- this.twoPageDiv = document.createElement('div');
- $(this.twoPageDiv).attr('id', 'GBbookcover').css({
+ //console.dir(this.twoPage);
+
+ // Add the two page view
+ // $$$ Can we get everything set up and then append?
+ $('#GBcontainer').append('<div id="GBtwopageview"></div>');
+
+ // $$$ 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: this.twoPage.bookCoverDivWidth + 'px',
height: this.twoPage.bookCoverDivHeight+'px',
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.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();
+
+ this.removeSearchHilites();
+ this.updateSearchHilites();
+
}
// prepareTwoPagePopUp()
//______________________________________________________________________________
// Calculates 2-page spread dimensions based on this.twoPage.currentIndexL and
// this.twoPage.currentIndexR
-// This function sets this.twoPage.height, twoPage.width, and twoPage.ratio
+// This function sets this.twoPage.height, twoPage.width
GnuBook.prototype.calculateSpreadSize = function() {
- console.log('calculateSpreadSize ' + this.twoPage.currentIndexL); // XXX
- // $$$ TODO Calculate the spread size based on the reduction factor. If we are using
- // fit mode we recalculate the reduction factor based on the current page sizes
- // and display size first.
-
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);
spreadSize = this.getSpreadSizeFromReduce(firstIndex, secondIndex, this.reduce);
}
+ // Both pages together
this.twoPage.height = spreadSize.height;
this.twoPage.width = spreadSize.width;
- this.twoPage.ratio = spreadSize.ratio;
- this.twoPage.edgeWidth = spreadSize.totalLeafEdgeWidth; // The combined width of both edges
+ // 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;
-
- // Total height and width -- makes the spine middle centered
+
+
+ // 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 largestWidthFromCenter = Math.max( (this.twoPage.scaledWL + leftGutterOffset), (this.twoPage.scaledWR - leftGutterOffset));
+ 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);
this.twoPage.middle = this.twoPage.totalWidth >> 1;
this.twoPage.gutter = this.twoPage.middle + this.gutterOffsetForIndex(firstIndex);
- this.twoPage.bookCoverDivLeft = this.twoPage.coverExternalPadding; // $$$ Account for border?
- this.twoPage.bookCoverDivTop = this.twoPage.coverExternalPadding; // $$$ Account for border?
+ // The left edge of the book cover moves depending on the width of the pages
+ // $$$ 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;
var canon5Dratio = 1.5;
var first = {
- height: this.getPageHeight(firstIndex),
- width: this.getPageWidth(firstIndex)
+ height: this._getPageHeight(firstIndex),
+ width: this._getPageWidth(firstIndex)
}
var second = {
- height: this.getPageHeight(secondIndex),
- width: this.getPageWidth(secondIndex)
+ 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(firstIndexRatio - canon5Dratio) < Math.abs(secondIndexRatio - canon5Dratio)) {
- ideal.ratio = firstIndexRatio;
+ ratio = firstIndexRatio;
//console.log('using firstIndexRatio ' + ratio);
} else {
- ideal.ratio = secondIndexRatio;
+ ratio = secondIndexRatio;
//console.log('using secondIndexRatio ' + ratio);
}
var maxLeafEdgeWidth = parseInt($('#GBcontainer').attr('clientWidth') * 0.1);
ideal.totalLeafEdgeWidth = Math.min(totalLeafEdgeWidth, maxLeafEdgeWidth);
- ideal.width = ($('#GBcontainer').attr('clientWidth') - 30 - ideal.totalLeafEdgeWidth)>>1;
- ideal.height = $('#GBcontainer').height() - 30; // $$$ why - 30? book edge width?
- //console.log('init idealWidth='+idealWidth+' idealHeight='+idealHeight + ' ratio='+ratio);
+ var widthOutsidePages = 2 * (this.twoPage.coverInternalPadding + this.twoPage.coverExternalPadding) + ideal.totalLeafEdgeWidth;
+ var heightOutsidePages = 2* (this.twoPage.coverInternalPadding + this.twoPage.coverExternalPadding);
+
+ ideal.width = ($('#GBcontainer').width() - widthOutsidePages) >> 1;
+ ideal.width -= 10; // $$$ fudge factor
+ ideal.height = $('#GBcontainer').height() - heightOutsidePages;
+ ideal.height -= 20; // fudge factor
+ //console.log('init idealWidth='+ideal.width+' idealHeight='+ideal.height + ' ratio='+ratio);
- if (ideal.height/ideal.ratio <= ideal.width) {
+ if (ideal.height/ratio <= ideal.width) {
//use height
- ideal.width = parseInt(ideal.height/ideal.ratio);
+ ideal.width = parseInt(ideal.height/ratio);
} else {
//use width
- ideal.height = parseInt(ideal.width*ideal.ratio);
+ ideal.height = parseInt(ideal.width*ratio);
}
- // XXX check this logic with large spreads
+ // $$$ check this logic with large spreads
ideal.reduce = ((first.height + second.height) / 2) / ideal.height;
return ideal;
}
+// getSpreadSizeFromReduce()
+//______________________________________________________________________________
+// Returns the spread size calculated from the reduction factor for the given pages
GnuBook.prototype.getSpreadSizeFromReduce = function(firstIndex, secondIndex, reduce) {
var spreadSize = {};
// $$$ Scale this based on reduce?
var totalLeafEdgeWidth = parseInt(this.numLeafs * 0.1);
- var maxLeafEdgeWidth = parseInt($('#GBcontainer').attr('clientWidth') * 0.1);
+ var maxLeafEdgeWidth = parseInt($('#GBcontainer').attr('clientWidth') * 0.1); // $$$ Assumes leaf edge width constant at all zoom levels
spreadSize.totalLeafEdgeWidth = Math.min(totalLeafEdgeWidth, maxLeafEdgeWidth);
- // $$$ this isn't quite right when the pages are different sizes
- var nativeWidth = this.getPageWidth(firstIndex) + this.getPageWidth(secondIndex);
- var nativeHeight = this.getPageHeight(firstIndex) + this.getPageHeight(secondIndex);
+ // $$$ Possibly incorrect -- we should make height "dominant"
+ var nativeWidth = this._getPageWidth(firstIndex) + this._getPageWidth(secondIndex);
+ var nativeHeight = this._getPageHeight(firstIndex) + this._getPageHeight(secondIndex);
spreadSize.height = parseInt( (nativeHeight / 2) / this.reduce );
spreadSize.width = parseInt( (nativeWidth / 2) / this.reduce );
spreadSize.reduce = reduce;
- // XXX
- console.log('spread size: ' + firstIndex + ',' + secondIndex + ',' + reduce);
-
return spreadSize;
}
+// twoPageGetAutofitReduce()
+//______________________________________________________________________________
+// Returns the current ideal reduction factor
+GnuBook.prototype.twoPageGetAutofitReduce = function() {
+ var spreadSize = this.getIdealSpreadSize(this.twoPage.currentIndexL, this.twoPage.currentIndexR);
+ return spreadSize.reduce;
+}
+
+// twoPageSetCursor()
+//______________________________________________________________________________
+// Set the cursor for two page view
+GnuBook.prototype.twoPageSetCursor = function() {
+ // console.log('setting cursor');
+ if ( ($('#GBtwopageview').width() > $('#GBcontainer').attr('clientWidth')) ||
+ ($('#GBtwopageview').height() > $('#GBcontainer').attr('clientHeight')) ) {
+ $(this.prefetchedImgs[this.twoPage.currentIndexL]).css('cursor','move');
+ $(this.prefetchedImgs[this.twoPage.currentIndexR]).css('cursor','move');
+ } else {
+ $(this.prefetchedImgs[this.twoPage.currentIndexL]).css('cursor','');
+ $(this.prefetchedImgs[this.twoPage.currentIndexR]).css('cursor','');
+ }
+}
+
// currentIndex()
//______________________________________________________________________________
// Returns the currently active index.
GnuBook.prototype.currentIndex = function() {
// $$$ we should be cleaner with our idea of which index is active in 1up/2up
- if (this.mode == this.constMode1up || this.mode == this.constMode2up) {
- return this.firstIndex;
+ if (this.mode == this.constMode1up || this.mode == this.constModeThumb) {
+ return this.firstIndex; // $$$ TODO page in center of view would be better
+ } else if (this.mode == this.constMode2up) {
+ // Only allow indices that are actually present in book
+ return GnuBook.util.clamp(this.firstIndex, 0, this.numLeafs - 1);
} else {
throw 'currentIndex called for unimplemented mode ' + this.mode;
}
}
GnuBook.prototype.first = function() {
- if (2 == this.mode) {
- this.jumpToIndex(2);
- }
- else {
- this.jumpToIndex(0);
- }
+ this.jumpToIndex(this.firstDisplayableIndex());
}
GnuBook.prototype.last = function() {
- if (2 == this.mode) {
- this.jumpToIndex(this.lastDisplayableIndex());
- }
- else {
- this.jumpToIndex(this.lastDisplayableIndex());
- }
+ this.jumpToIndex(this.lastDisplayableIndex());
}
// flipBackToIndex()
//______________________________________________________________________________
// to flip back one spread, pass index=null
GnuBook.prototype.flipBackToIndex = function(index) {
+
if (1 == this.mode) return;
var leftIndex = this.twoPage.currentIndexL;
- // $$$ Need to change this to be able to see first spread.
- // See https://bugs.launchpad.net/gnubook/+bug/296788
- if (leftIndex <= 2) return;
if (this.animating) return;
if (null != this.leafEdgeTmp) {
var previousIndices = this.getSpreadIndices(index);
- if (previousIndices[0] < 0 || previousIndices[1] < 0) {
+ if (previousIndices[0] < this.firstDisplayableIndex() || previousIndices[1] < this.firstDisplayableIndex()) {
return;
}
- //console.log("flipping back to " + previousIndices[0] + ',' + previousIndices[1]);
-
this.animating = true;
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.twoPage.currentIndexL;
var newWidthR = this.getPageWidth2UP(newIndexR);
var top = this.twoPageTop();
- var gutter = this.twoPageGutter();
+ var gutter = this.twoPage.middle + this.gutterOffsetForIndex(newIndexL);
//console.log('leftEdgeTmpW ' + leafEdgeTmpW);
//console.log(' gutter ' + gutter + ', scaledWL ' + scaledWL + ', newLeafEdgeWL ' + 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
+ // - 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()].
// Left gets the offset of the current left leaf from the document
var left = $(this.prefetchedImgs[leftLeaf]).offset().left;
// $$$ This seems very similar to the gutter. May be able to consolidate the logic.
- // XXX need to recalc
var right = $('#GBtwopageview').attr('clientWidth')-left-$(this.prefetchedImgs[leftLeaf]).width()+$('#GBtwopageview').offset().left-2+'px';
+
// We change the left leaf to right positioning
+ // $$$ 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.twoPage.edgeWidth-newLeafEdgeWidthL+'px',
left: gutter-newWidthL-newLeafEdgeWidthL+'px'
});
-
- $(self.twoPageDiv).css({
- // Resizes the brown border div
- width: newWidthL+newWidthR+self.twoPage.edgeWidth+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;
+
+ // $$$ TODO refactor with opposite direction flip
self.twoPage.currentIndexL = newIndexL;
self.twoPage.currentIndexR = newIndexR;
+ self.twoPage.scaledWL = newWidthL;
+ self.twoPage.scaledWR = newWidthR;
+ self.twoPage.gutter = gutter;
+
self.firstIndex = self.twoPage.currentIndexL;
self.displayedIndices = [newIndexL, newIndexR];
- self.setClickHandlers();
self.pruneUnusedImgs();
self.prefetch();
self.animating = false;
self.updateSearchHilites2UP();
self.updatePageNumBox2UP();
+ // self.twoPagePlaceFlipAreas(); // No longer used
+ self.setMouseHandlers2UP();
+ self.twoPageSetCursor();
+
if (self.animationFinishedCallback) {
self.animationFinishedCallback();
self.animationFinishedCallback = null;
} else {
// RTL
var gutter = this.prepareFlipLeftToRight(nextIndices[0], nextIndices[1]);
- this.flipLeftToRight(nextIndices[0], nextIndices[1], gutter);
+ this.flipLeftToRight(nextIndices[0], nextIndices[1]);
}
}
// $$$ 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) {
+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 leafEdgeTmpW = oldLeafEdgeWidthR - newLeafEdgeWidthR;
- var top = ($('#GBtwopageview').height() - this.twoPage.height) >> 1;
-
+ var top = this.twoPageTop();
var scaledW = this.getPageWidth2UP(this.twoPage.currentIndexR);
- var middle = ($('#GBtwopageview').attr('clientWidth') >> 1);
- var currGutter = middle + this.gutterOffsetForIndex(this.twoPage.currentIndexL);
+ var middle = this.twoPage.middle;
+ var gutter = middle + this.gutterOffsetForIndex(newIndexL);
- // XXX
- console.log('R->L middle(' + middle +') currGutter(' + currGutter + ') gutter(' + gutter + ')');
-
this.leafEdgeTmp = document.createElement('div');
$(this.leafEdgeTmp).css({
borderStyle: 'solid none solid solid',
background: 'transparent url(' + this.imagesBaseURL + 'left_edges.png) repeat scroll 0% 0%',
width: leafEdgeTmpW + 'px',
height: this.twoPage.height-1 + 'px',
- left: currGutter+scaledW+'px',
+ left: gutter+scaledW+'px',
top: top+'px',
position: 'absolute',
zIndex:1000
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!
$(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.twoPage.edgeWidth+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.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.setClickHandlers();
self.pruneUnusedImgs();
self.prefetch();
self.animating = false;
self.updateSearchHilites2UP();
self.updatePageNumBox2UP();
+ // 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;
- // $$$ TODO don't set again if already set
- $(this.prefetchedImgs[this.twoPage.currentIndexL]).click(function() {
+GnuBook.prototype.setMouseHandlers2UP = function() {
+ /*
+ $(this.prefetchedImgs[this.twoPage.currentIndexL]).bind('dblclick', function() {
//self.prevPage();
self.autoStop();
self.left();
});
- $(this.prefetchedImgs[this.twoPage.currentIndexR]).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(index) {
- if (undefined == this.prefetchedImgs[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(index);
+ img.src = pageURI;
+ img.uri = pageURI; // browser may rewrite src so we stash raw URI here
this.prefetchedImgs[index] = img;
}
}
this.prefetchImg(prevL);
this.prefetchImg(prevR);
- var height = this.getPageHeight(prevL);
- var width = this.getPageWidth(prevL);
- var middle = ($('#GBtwopageview').attr('clientWidth') >> 1);
- var top = ($('#GBtwopageview').height() - this.twoPage.height) >> 1;
- var scaledW = this.twoPage.height*width/height;
+ var height = this._getPageHeight(prevL);
+ var width = this._getPageWidth(prevL);
+ 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
var gutter = middle + this.gutterOffsetForIndex(prevL);
- // XXX
- console.log(' gutter for ' + prevL + ' is ' + gutter);
+ //console.log(' gutter for ' + prevL + ' is ' + gutter);
//console.log(' prevL.left: ' + (gutter - scaledW) + 'px');
//console.log(' changing prevL ' + prevL + ' to left: ' + (gutter-scaledW) + ' width: ' + scaledW);
- $(this.prefetchedImgs[prevL]).css({
+ leftCSS = {
position: 'absolute',
- /*right: middle+'px',*/
left: gutter-scaledW+'px',
- right: '',
+ right: '', // clear right property
top: top+'px',
- backgroundColor: 'rgb(234, 226, 205)',
height: this.twoPage.height,
width: scaledW+'px',
+ backgroundColor: this.getPageBackgroundColor(prevL),
borderRight: '1px solid black',
zIndex: 1
- });
+ }
+
+ $(this.prefetchedImgs[prevL]).css(leftCSS);
$('#GBtwopageview').append(this.prefetchedImgs[prevL]);
//console.log(' changing prevR ' + prevR + ' to left: ' + gutter + ' width: 0');
- $(this.prefetchedImgs[prevR]).css({
+ rightCSS = {
position: 'absolute',
left: gutter+'px',
right: '',
top: top+'px',
- backgroundColor: 'rgb(234, 226, 205)',
height: this.twoPage.height,
width: '0px',
+ backgroundColor: this.getPageBackgroundColor(prevR),
borderLeft: '1px solid black',
zIndex: 2
- });
+ }
+
+ $(this.prefetchedImgs[prevR]).css(rightCSS);
$('#GBtwopageview').append(this.prefetchedImgs[prevR]);
-
-
- return gutter;
}
-// XXXmang we're adding an extra pixel in the middle
+// $$$ 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 = ($('#GBtwopageview').attr('clientWidth') >> 1);
- var top = ($('#GBtwopageview').height() - this.twoPage.height) >> 1;
+ var height = this._getPageHeight(nextR);
+ var width = this._getPageWidth(nextR);
+ 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); // XXX
-
+
//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)',
+ backgroundColor: this.getPageBackgroundColor(nextR),
height: this.twoPage.height,
width: scaledW+'px',
borderLeft: '1px solid black',
$('#GBtwopageview').append(this.prefetchedImgs[nextR]);
- height = this.getPageHeight(nextL);
- width = this.getPageWidth(nextL);
+ height = this._getPageHeight(nextL);
+ width = this._getPageWidth(nextL);
scaledW = this.twoPage.height*width/height;
//console.log(' prepareRTL changing nextL ' + nextL + ' to right: ' + $('#GBcontainer').width()-gutter);
position: 'absolute',
right: $('#GBtwopageview').attr('clientWidth')-gutter+'px',
top: top+'px',
- backgroundColor: 'rgb(234, 226, 205)',
+ backgroundColor: this.getPageBackgroundColor(nextL),
height: this.twoPage.height,
- width: 0+'px',
+ width: 0+'px', // Start at 0 width, then grow to the left
borderRight: '1px solid black',
zIndex: 2
});
$('#GBtwopageview').append(this.prefetchedImgs[nextL]);
-
- return gutter;
}
//______________________________________________________________________________
GnuBook.prototype.prefetch = function() {
+ // 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);
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);
+ var height = this._getPageHeight(index);
+ var width = this._getPageWidth(index);
return Math.floor(this.twoPage.height*width/height); // $$$ we assume width is relative to current spread
}
// search()
//______________________________________________________________________________
GnuBook.prototype.search = function(term) {
+ term = term.replace(/\//g, ' '); // strip slashes
+ this.searchTerm = term;
$('#GnuBookSearchScript').remove();
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 + '_djvu.xml')+'&term='+term+'&format=XML&callback=gb.GBSearchCallback');
document.getElementsByTagName('head')[0].appendChild(script);
+ $('#GnuBookSearchBox').val(term);
$('#GnuBookSearchResults').html('Searching...');
}
//we'll skip baseline for now...
var coords = children[j].getAttribute('coords').split(',',4);
if (4 == coords.length) {
- this.searchResults[index] = {'l':coords[0], 'b':coords[1], 'r':coords[2], 't':coords[3], 'div':null};
+ this.searchResults[index] = {'l':parseInt(coords[0]), 'b':parseInt(coords[1]), 'r':parseInt(coords[2]), 't':parseInt(coords[3]), 'div':null};
}
}
}
}
var pageName = this.getPageName(index);
+ var middleX = (this.searchResults[index].l + this.searchResults[index].r) >> 1;
+ var middleY = (this.searchResults[index].t + this.searchResults[index].b) >> 1;
//TODO: remove hardcoded instance name
- $('#GnuBookSearchResults').append('<li><b><a href="javascript:gb.jumpToIndex('+index+');">' + pageName + '</a></b> - ' + context + '</li>');
+ $('#GnuBookSearchResults').append('<li><b><a href="javascript:gb.jumpToIndex('+index+','+middleX+','+middleY+');">' + pageName + '</a></b> - ' + context + '</li>');
}
}
$('#GnuBookSearchResults').append('</ul>');
+ // $$$ update again for case of loading search URL in new browser window (search box may not have been ready yet)
+ $('#GnuBookSearchBox').val(this.searchTerm);
+
this.updateSearchHilites();
}
}
}
-// XXX move, clean up, use everywhere
+// twoPageGutter()
+//______________________________________________________________________________
+// Returns the position of the gutter (line between the page images)
GnuBook.prototype.twoPageGutter = function() {
- var middle = ($('#GBtwopageview').width() >> 1);
- return middle + this.gutterOffsetForIndex(this.twoPage.currentIndexL);
+ return this.twoPage.middle + this.gutterOffsetForIndex(this.twoPage.currentIndexL);
}
-// XXX move, clean up, use everywhere
+// twoPageTop()
+//______________________________________________________________________________
+// Returns the offset for the top of the page images
GnuBook.prototype.twoPageTop = function() {
return this.twoPage.coverExternalPadding + this.twoPage.coverInternalPadding; // $$$ + 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() {
// 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 height = this._getPageHeight(key);
+ var width = this._getPageWidth(key)
var reduce = this.twoPage.height/height;
var scaledW = parseInt(width*reduce);
}
}
+// printPage
+//______________________________________________________________________________
+GnuBook.prototype.printPage = function() {
+ window.open(this.getPrintURI(), 'printpage', 'width=400, height=500, resizable=yes, scrollbars=no, toolbar=no, location=no');
+
+ /* iframe implementation
+
+ if (null != this.printPopup) { // check if already showing
+ return;
+ }
+ this.printPopup = document.createElement("div");
+ $(this.printPopup).css({
+ position: 'absolute',
+ top: '20px',
+ left: ($('#GBcontainer').width()-400)/2 + 'px',
+ width: '400px',
+ padding: "20px",
+ border: "3px double #999999",
+ zIndex: 3,
+ backgroundColor: "#fff"
+ }).appendTo('#GnuBook');
+
+ var indexToPrint;
+ if (this.constMode1up == this.mode) {
+ indexToPrint = this.firstIndex;
+ } else {
+ indexToPrint = this.twoPage.currentIndexL;
+ }
+
+ this.indexToPrint = indexToPrint;
+
+ var htmlStr = '<div style="text-align: center;">';
+ htmlStr = '<p style="text-align:center;"><b><a href="javascript:void(0);" onclick="window.frames[0].focus(); window.frames[0].print(); return false;">Click here to print this page</a></b></p>';
+ htmlStr += '<div id="printDiv" name="printDiv" style="text-align: center; width: 233px; margin: auto">'
+ htmlStr += '<p style="text-align:right; margin: 0; font-size: 0.85em">';
+ //htmlStr += '<button class="GBicon rollover book_up" onclick="gb.updatePrintFrame(-1); return false;"></button> ';
+ //htmlStr += '<button class="GBicon rollover book_down" onclick="gb.updatePrintFrame(1); return false;"></button>';
+ htmlStr += '<a href="#" onclick="gb.updatePrintFrame(-1); return false;">Prev</a> <a href="#" onclick="gb.updatePrintFrame(1); return false;">Next</a>';
+ htmlStr += '</p>';
+ htmlStr += '</div>';
+ htmlStr += '<p style="text-align:center;"><a href="" onclick="gb.printPopup = null; $(this.parentNode.parentNode).remove(); return false">Close popup</a></p>';
+ htmlStr += '</div>';
+
+ this.printPopup.innerHTML = htmlStr;
+
+ var iframe = document.createElement('iframe');
+ iframe.id = 'printFrame';
+ iframe.name = 'printFrame';
+ iframe.width = '233px'; // 8.5 x 11 aspect
+ iframe.height = '300px';
+
+ var self = this; // closure
+
+ $(iframe).load(function() {
+ var doc = GnuBook.util.getIFrameDocument(this);
+ $('body', doc).html(self.getPrintFrameContent(self.indexToPrint));
+ });
+
+ $('#printDiv').prepend(iframe);
+ */
+}
+
+// Get print URI from current indices and mode
+GnuBook.prototype.getPrintURI = function() {
+ var indexToPrint;
+ if (this.constMode2up == this.mode) {
+ indexToPrint = this.twoPage.currentIndexL;
+ } else {
+ indexToPrint = this.firstIndex; // $$$ the index in the middle of the viewport would make more sense
+ }
+
+ var options = 'id=' + this.bookId + '&server=' + this.server + '&zip=' + this.zip
+ + '&format=' + this.imageFormat + '&file=' + this._getPageFile(indexToPrint)
+ + '&width=' + this._getPageWidth(indexToPrint) + '&height=' + this._getPageHeight(indexToPrint);
+
+ if (this.constMode2up == this.mode) {
+ options += '&file2=' + this._getPageFile(this.twoPage.currentIndexR) + '&width2=' + this._getPageWidth(this.twoPage.currentIndexR);
+ options += '&height2=' + this._getPageHeight(this.twoPage.currentIndexR);
+ options += '&title=' + encodeURIComponent(this.shortTitle(50) + ' - Pages ' + this.getPageNum(this.twoPage.currentIndexL) + ', ' + this.getPageNum(this.twoPage.currentIndexR));
+ } else {
+ options += '&title=' + encodeURIComponent(this.shortTitle(50) + ' - Page ' + this.getPageNum(indexToPrint));
+ }
+
+ return '/bookreader/print.php?' + options;
+}
+
+/* iframe implementation
+GnuBook.prototype.getPrintFrameContent = function(index) {
+ // We fit the image based on an assumed A4 aspect ratio. A4 is a bit taller aspect than
+ // 8.5x11 so we should end up not overflowing on either paper size.
+ var paperAspect = 8.5 / 11;
+ var imageAspect = this._getPageWidth(index) / this._getPageHeight(index);
+
+ var rotate = 0;
+
+ // Rotate if possible and appropriate, to get larger image size on printed page
+ if (this.canRotatePage(index)) {
+ if (imageAspect > 1 && imageAspect > paperAspect) {
+ // more wide than square, and more wide than paper
+ rotate = 90;
+ imageAspect = 1/imageAspect;
+ }
+ }
+
+ var fitAttrs;
+ if (imageAspect > paperAspect) {
+ // wider than paper, fit width
+ fitAttrs = 'width="95%"';
+ } else {
+ // taller than paper, fit height
+ fitAttrs = 'height="95%"';
+ }
+
+ var imageURL = this._getPageURI(index, 1, rotate);
+ var iframeStr = '<html style="padding: 0; border: 0; margin: 0"><head><title>' + this.bookTitle + '</title></head><body style="padding: 0; border:0; margin: 0">';
+ iframeStr += '<div style="text-align: center; width: 99%; height: 99%; overflow: hidden;">';
+ iframeStr += '<img src="' + imageURL + '" ' + fitAttrs + ' />';
+ iframeStr += '</div>';
+ iframeStr += '</body></html>';
+
+ return iframeStr;
+}
+
+GnuBook.prototype.updatePrintFrame = function(delta) {
+ var newIndex = this.indexToPrint + delta;
+ newIndex = GnuBook.util.clamp(newIndex, 0, this.numLeafs - 1);
+ if (newIndex == this.indexToPrint) {
+ return;
+ }
+ this.indexToPrint = newIndex;
+ var doc = GnuBook.util.getIFrameDocument($('#printFrame')[0]);
+ $('body', doc).html(this.getPrintFrameContent(this.indexToPrint));
+}
+*/
+
// showEmbedCode()
//______________________________________________________________________________
GnuBook.prototype.showEmbedCode = function() {
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) {
// 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
//______________________________________________________________________________
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.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>"
- + "</span></div>");
+ $("#GnuBook").append("<div id='GBtoolbar'>"
+ + "<span id='GBtoolbarbuttons' style='float: right'>"
+ + "<button class='GBicon print rollover' /> <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: 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>"
+ + "<div class='GBtoolbarmode3' style='display: none'><button class='GBicon rollover book_top' /><button class='GBicon rollover book_thumb_prev' /> <button class='GBicon rollover book_thumb_next' /><button class='GBicon rollover book_bottom' /></div>"
+ + "<button class='GBicon rollover play' /><button class='GBicon rollover pause' style='display: none' />"
+ + "</span>"
+
+ + "<span>"
+ + "<a class='GBicon logo rollover' href='" + this.logoURL + "'> </a>"
+ + "<div class='GBtoolbarzoom' style='display: none'><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></div>"
+ + " <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;'/>"
+ + " <button class='GBicon rollover thumbnail_mode' onclick='gb.switchMode(3); return false;'/>"
+ + "</span>"
+
+ + "<span id='#GBbooktitle'>"
+ + " <a class='GBblack title' href='"+this.bookUrl+"' target='_blank'>"+this.bookTitle+"</a>"
+ + "</span>"
+ + "</div>");
+
+ this.updateToolbarZoom(this.reduce); // Pretty format
if (ui == "embed") {
$("#GnuBook a.logo").attr("target","_blank");
var jToolbar = $('#GBtoolbar'); // j prefix indicates jQuery object
// We build in mode 2
- 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: 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>");
+ jToolbar.append();
this.bindToolbarNavHandlers(jToolbar);
'.zoom_out': 'Zoom out',
'.one_page_mode': 'One-page view',
'.two_page_mode': 'Two-page view',
+ '.thumbnail_mode': 'Thumbnail view',
+ '.print': 'Print this page',
'.embed': 'Embed bookreader',
'.book_left': 'Flip left',
'.book_right': 'Flip right',
'.play': 'Play',
'.pause': 'Pause',
'.book_top': 'First page',
- '.book_bottom': 'Last page'
+ '.book_bottom': 'Last page',
+ '.book_thumb_next': 'Next',
+ '.book_thumb_prev': 'Previous'
};
if ('rl' == this.pageProgression) {
titles['.book_leftmost'] = 'Last page';
// Switch to requested mode -- binds other click handlers
this.switchToolbarMode(mode);
-
+
}
// Update the toolbar for the given mode (changes navigation buttons)
// $$$ we should soon split the toolbar out into its own module
GnuBook.prototype.switchToolbarMode = function(mode) {
+
if (1 == mode) {
- // 1-up
+ // 1-up
+ $('#GBtoolbar .GBtoolbarzoom').show().css('display', 'inline');
$('#GBtoolbar .GBtoolbarmode2').hide();
+ $('#GBtoolbar .GBtoolbarmode3').hide();
$('#GBtoolbar .GBtoolbarmode1').show().css('display', 'inline');
- } else {
+ } else if (2 == mode) {
// 2-up
+ $('#GBtoolbar .GBtoolbarzoom').show().css('display', 'inline');
$('#GBtoolbar .GBtoolbarmode1').hide();
+ $('#GBtoolbar .GBtoolbarmode3').hide();
$('#GBtoolbar .GBtoolbarmode2').show().css('display', 'inline');
+ } else {
+ // 3-up
+ $('#GBtoolbar .GBtoolbarzoom').hide();
+ $('#GBtoolbar .GBtoolbarmode2').hide();
+ $('#GBtoolbar .GBtoolbarmode1').hide();
+ $('#GBtoolbar .GBtoolbarmode3').show().css('display', 'inline');
}
}
gb.next();
return false;
});
+
+ jToolbar.find('.print').bind('click', function(e) {
+ gb.printPage();
+ return false;
+ });
jToolbar.find('.embed').bind('click', function(e) {
gb.showEmbedCode();
gb.rightmost();
return false;
});
+
+ jToolbar.find('.book_thumb_prev').bind('click', function(e) {
+ gb.prev();
+ return false;
+ });
+
+ jToolbar.find('.book_thumb_next').bind('click', function(e) {
+ gb.next();
+ return false;
+ });
}
// updateToolbarZoom(reduce)
//______________________________________________________________________________
// Update the displayed zoom factor based on reduction factor
GnuBook.prototype.updateToolbarZoom = function(reduce) {
- // $$$ TODO: Move toolbar to it's own object/plugin
- $('#GBzoom').text(parseInt(100/reduce));
+ var value;
+ if (this.constMode2up == this.mode && this.twoPage.autofit) {
+ value = 'Auto';
+ } else {
+ value = (100 / reduce).toFixed(2);
+ // Strip trailing zeroes and decimal if all zeroes
+ value = value.replace(/0+$/,'');
+ value = value.replace(/\.$/,'');
+ value += '%';
+ }
+ $('#GBzoom').text(value);
}
// firstDisplayableIndex
// $$$ Currently we cannot display the front/back cover in 2-up and will need to update
// this function when we can as part of https://bugs.launchpad.net/gnubook/+bug/296788
GnuBook.prototype.firstDisplayableIndex = function() {
- if (this.mode == 0) {
+ if (this.mode != this.constMode2up) {
return 0;
+ }
+
+ if ('rl' != this.pageProgression) {
+ // LTR
+ if (this.getPageSide(0) == 'L') {
+ return 0;
+ } else {
+ return -1;
+ }
} else {
- return 1; // $$$ we assume there are enough pages... we need logic for very short books
+ // RTL
+ if (this.getPageSide(0) == 'R') {
+ return 0;
+ } else {
+ return -1;
+ }
}
}
// $$$ Currently we cannot display the front/back cover in 2-up and will need to update
// this function when we can as pa rt of https://bugs.launchpad.net/gnubook/+bug/296788
GnuBook.prototype.lastDisplayableIndex = function() {
- if (this.mode == 2) {
- if (this.lastDisplayableIndex2up === null) {
- // Calculate and cache
- var candidate = this.numLeafs - 1;
- for ( ; candidate >= 0; candidate--) {
- var spreadIndices = this.getSpreadIndices(candidate);
- if (Math.max(spreadIndices[0], spreadIndices[1]) < (this.numLeafs - 1)) {
- break;
- }
- }
- this.lastDisplayableIndex2up = candidate;
+
+ var lastIndex = this.numLeafs - 1;
+
+ if (this.mode != this.constMode2up) {
+ return lastIndex;
+ }
+
+ if ('rl' != this.pageProgression) {
+ // LTR
+ if (this.getPageSide(lastIndex) == 'R') {
+ return lastIndex;
+ } else {
+ return lastIndex + 1;
}
- return this.lastDisplayableIndex2up;
} else {
- return this.numLeafs - 1;
+ // RTL
+ if (this.getPageSide(lastIndex) == 'L') {
+ return lastIndex;
+ } else {
+ return lastIndex + 1;
+ }
}
}
return title;
}
-
-
// Parameter related functions
// updateFromParams(params)
this.switchMode(params.mode);
}
- // $$$ process /search
+ // process /search
+ if ('undefined' != typeof(params.searchTerm)) {
+ if (this.searchTerm != params.searchTerm) {
+ this.search(params.searchTerm);
+ }
+ }
+
// $$$ process /zoom
// We only respect page if index is not set
// E.g paramsFromFragment(window.location.hash)
GnuBook.prototype.paramsFromFragment = function(urlFragment) {
// URL fragment syntax specification: http://openlibrary.org/dev/docs/bookurls
-
+
var params = {};
// For convenience we allow an initial # character (as from window.location.hash)
params.mode = this.constMode1up;
} else if ('2up' == urlHash['mode']) {
params.mode = this.constMode2up;
+ } else if ('thumb' == urlHash['mode']) {
+ params.mode = this.constModeThumb;
}
// Index and page
// $$$ process /region
// $$$ process /search
+
+ if (urlHash['search'] != undefined) {
+ params.searchTerm = GnuBook.util.decodeURIComponentPlus(urlHash['search']);
+ }
+
// $$$ process /highlight
return params;
GnuBook.prototype.paramsFromCurrent = function() {
var params = {};
-
- var pageNum = this.getPageNum(this.currentIndex());
+
+ var index = this.currentIndex();
+ var pageNum = this.getPageNum(index);
if ((pageNum === 0) || pageNum) {
params.page = pageNum;
}
- params.index = this.currentIndex();
+ params.index = index;
params.mode = this.mode;
// $$$ highlight
// $$$ region
- // $$$ search
+
+ // search
+ if (this.searchHighlightVisible()) {
+ params.searchTerm = this.searchTerm;
+ }
return params;
}
// See http://openlibrary.org/dev/docs/bookurls for an explanation of the fragment syntax.
GnuBook.prototype.fragmentFromParams = function(params) {
var separator = '/';
-
+
var fragments = [];
if ('undefined' != typeof(params.page)) {
// $$$ highlight
// $$$ region
- // $$$ search
// mode
if ('undefined' != typeof(params.mode)) {
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);
+ // search
+ if (params.searchTerm) {
+ fragments.push('search', params.searchTerm);
+ }
+
+ return GnuBook.util.encodeURIComponentPlus(fragments.join(separator)).replace(/%2F/g, '/');
}
// getPageIndex(pageNum)
try {
var pageIntStr = pageNum.slice(1, pageNum.length);
var pageIndex = parseInt(pageIntStr);
- indices.append(pageIndex);
+ indices.push(pageIndex);
return indices;
} catch(err) {
// Do nothing... will run through page names and see if one matches
}, 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
return true;
}
+// searchHighlightVisible
+//________
+// Returns true if a search highlight is currently being displayed
+GnuBook.prototype.searchHighlightVisible = function() {
+ if (this.constMode2up == this.mode) {
+ if (this.searchResults[this.twoPage.currentIndexL]
+ || this.searchResults[this.twoPage.currentIndexR]) {
+ return true;
+ }
+ } else { // 1up
+ if (this.searchResults[this.currentIndex()]) {
+ return true;
+ }
+ }
+ return false;
+}
+
+// getPageBackgroundColor
+//--------
+// Returns a CSS property string for the background color for the given page
+// $$$ turn into regular CSS?
+GnuBook.prototype.getPageBackgroundColor = function(index) {
+ if (index >= 0 && index < this.numLeafs) {
+ // normal page
+ return this.pageDefaultBackgroundColor;
+ }
+
+ return '';
+}
+
+// _getPageWidth
+//--------
+// Returns the page width for the given index, or first or last page if out of range
+GnuBook.prototype._getPageWidth = function(index) {
+ // Synthesize a page width for pages not actually present in book.
+ // May or may not be the best approach.
+ // If index is out of range we return the width of first or last page
+ index = GnuBook.util.clamp(index, 0, this.numLeafs - 1);
+ return this.getPageWidth(index);
+}
+
+// _getPageHeight
+//--------
+// Returns the page height for the given index, or first or last page if out of range
+GnuBook.prototype._getPageHeight= function(index) {
+ index = GnuBook.util.clamp(index, 0, this.numLeafs - 1);
+ return this.getPageHeight(index);
+}
+
+// _getPageURI
+//--------
+// Returns the page URI or transparent image if out of range
+GnuBook.prototype._getPageURI = function(index, reduce, rotate) {
+ if (index < 0 || index >= this.numLeafs) { // Synthesize page
+ return this.imagesBaseURL + "/transparent.png";
+ }
+
+ return this.getPageURI(index, reduce, rotate);
+}
+
// Library functions
GnuBook.util = {
clamp: function(value, min, max) {
return Math.min(Math.max(value, min), max);
+ },
+
+ getIFrameDocument: function(iframe) {
+ // Adapted from http://xkr.us/articles/dom/iframe-document/
+ var outer = (iframe.contentWindow || iframe.contentDocument);
+ return (outer.document || outer);
+ },
+
+ decodeURIComponentPlus: function(value) {
+ // Decodes a URI component and converts '+' to ' '
+ return decodeURIComponent(value).replace(/\+/g, ' ');
+ },
+
+ encodeURIComponentPlus: function(value) {
+ // Encodes a URI component and converts ' ' to '+'
+ return encodeURIComponent(value).replace(/%20/g, '+');
}
-}
\ No newline at end of file
+ // The final property here must NOT have a comma after it - IE7
+}
projects / bookreader.git / blobdiff