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.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.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
+ coverExternalPadding: 10, // Padding outside of cover
+ bookSpineDivWidth: 30, // Width of book spine $$$ consider sizing based on book length
+ autofit: true
+ };
};
// init()
GnuBook.prototype.init = function() {
var startIndex = undefined;
+ this.pageScale = this.reduce; // preserve current reduce
// Find start index and mode if set in location hash
var params = this.paramsFromFragment(window.location.hash);
e.data.displayedIndices = [];
e.data.updateSearchHilites(); //deletes hilights but does not call remove()
e.data.loadLeafs();
+ } else if (3 == e.data.mode){
+ e.data.prepareThumbnailView();
} else {
//console.log('drawing 2 page view');
- e.data.prepareTwoPageView();
+
+ // We only need to prepare again in autofit (size of spread changes)
+ if (e.data.twoPage.autofit) {
+ e.data.prepareTwoPageView();
+ } else {
+ // Re-center if the scrollbars have disappeared
+ var center = e.data.twoPageGetViewCenter();
+ var doRecenter = false;
+ if (e.data.twoPage.totalWidth < $('#GBcontainer').attr('clientWidth')) {
+ center.percentageX = 0.5;
+ doRecenter = true;
+ }
+ if (e.data.twoPage.totalHeight < $('#GBcontainer').attr('clientHeight')) {
+ center.percentageY = 0.5;
+ doRecenter = true;
+ }
+ if (doRecenter) {
+ e.data.twoPageCenterView(center.percentageX, center.percentageY);
+ }
+ }
}
});
$('.GBpagediv1up').bind('mousedown', this, function(e) {
- //console.log('mousedown!');
+ // $$$ 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 {
+ } else if (3 == this.mode) {
+ this.firstIndex = startIndex;
+ this.prepareThumbnailView();
+ this.jumpToIndex(startIndex);
+ } else {
//this.resizePageView();
this.displayedIndices=[0];
//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) {
+ e.preventDefault();
self.prev();
}
break;
case KEY_DOWN:
case KEY_PGDOWN:
if (2 == self.mode) {
+ e.preventDefault();
self.next();
}
break;
case KEY_END:
+ e.preventDefault();
self.last();
break;
case KEY_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;
});
}
$(div).css('height', height+'px');
//$(div).text('loading...');
- this.setDragHandler1up(div);
+ this.setDragHandler(div);
$('#GBpageview').append(div);
} 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.currentIndexL);
+ // $$$ we should use calculated values in this.twoPage (recalc if necessary)
- var index = this.currentIndexL;
- var height = this.getPageHeight(index);
- var width = this.getPageWidth(index);
- var handSide= this.getPageSide(index);
+ var indexL = this.twoPage.currentIndexL;
+ var heightL = this.getPageHeight(indexL);
+ var widthL = this.getPageWidth(indexL);
- var leafEdgeWidthL = this.leafEdgeWidth(index);
- 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; // $$$ hardcoded cover width
+ var bookCoverDivWidth = this.twoPage.bookCoverDivWidth;
//console.log(leafEdgeWidthL);
- var middle = ($('#GBcontainer').width() >> 1);
- var left = middle - this.twoPageW;
- var top = ($('#GBcontainer').height() - this.twoPageH) >> 1;
-
- var scaledW = parseInt(this.twoPageH*width/height);
- left = 10+leafEdgeWidthL;
- //var right = left+scaledW;
- var right = $(this.twoPageDiv).width()-11-$(this.leafEdgeL).width()-scaledW;
+ var middle = this.twoPage.middle; // $$$ getter instead?
+ var top = this.twoPageTop();
+ var bookCoverDivLeft = this.twoPage.bookCoverDivLeft;
- var gutter = middle + this.gutterOffsetForIndex(this.currentIndexL);
+ this.twoPage.scaledWL = this.getPageWidth2UP(indexL);
+ this.twoPage.gutter = this.twoPageGutter();
- this.prefetchImg(index);
- $(this.prefetchedImgs[index]).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', // $$$ height forced the same for both pages
+ width: this.twoPage.scaledWL + 'px',
borderRight: '1px solid black',
zIndex: 2
- }).appendTo('#GBcontainer');
- //$('#GBcontainer').append(this.prefetchedImgs[index]);
-
-
- var index = this.currentIndexR;
- var height = this.getPageHeight(index);
- var width = this.getPageWidth(index);
- // var left = ($('#GBcontainer').width() >> 1);
- left += scaledW;
+ }).appendTo('#GBtwopageview');
+
+ var indexR = this.twoPage.currentIndexR;
+ var heightR = this.getPageHeight(indexR);
+ var widthR = this.getPageWidth(indexR);
- var scaledW = this.twoPageH*width/height;
- this.prefetchImg(index);
- $(this.prefetchedImgs[index]).css({
+ // $$$ 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', // $$$ height forced the same for both pages
+ width: this.twoPage.scaledWR + 'px',
borderLeft: '1px solid black',
zIndex: 2
- }).appendTo('#GBcontainer');
- //$('#GBcontainer').append(this.prefetchedImgs[index]);
+ }).appendTo('#GBtwopageview');
- this.displayedIndices = [this.currentIndexL, this.currentIndexR];
- this.setClickHandlers();
+ this.displayedIndices = [this.twoPage.currentIndexL, this.twoPage.currentIndexR];
+ this.setMouseHandlers2UP();
+ this.twoPageSetCursor();
this.updatePageNumBox2UP();
+ this.updateToolbarZoom(this.reduce);
+
+ // this.twoPagePlaceFlipAreas(); // No longer used
+
}
// updatePageNumBox2UP
//______________________________________________________________________________
GnuBook.prototype.updatePageNumBox2UP = function() {
- if (null != this.getPageNum(this.currentIndexL)) {
- $("#GBpagenum").val(this.getPageNum(this.currentIndexL));
+ if (null != this.getPageNum(this.twoPage.currentIndexL)) {
+ $("#GBpagenum").val(this.getPageNum(this.twoPage.currentIndexL));
} else {
$("#GBpagenum").val('');
}
}
}
+// zoom(direction)
+//
+// Pass 1 to zoom in, anything else to zoom out
+//______________________________________________________________________________
+GnuBook.prototype.zoom = function(direction) {
+ switch (this.mode) {
+ case this.constMode1up:
+ return this.zoom1up(direction);
+ case this.constMode2up:
+ return this.zoom2up(direction);
+ }
+}
-// zoom1up()
+// zoom1up(dir)
//______________________________________________________________________________
GnuBook.prototype.zoom1up = function(dir) {
if (2 == this.mode) { //can only zoom in 1-page mode
return;
}
+ // $$$ 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.displayedIndices = [];
this.loadLeafs();
- $('#GBzoom').text(100/this.reduce);
+ this.updateToolbarZoom(this.reduce);
}
// resizePageView()
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);
+
+ // 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);
+ $('#GBcontainer').attr('scrollLeft', newLeft);
+ //console.log('oldCenterX ' + oldCenterX + ' newCenterX ' + newCenterX + ' newLeft ' + newLeft);
- this.centerPageView();
+ //this.centerPageView();
this.loadLeafs();
}
+// centerX1up()
+//______________________________________________________________________________
+// Returns the current offset of the viewport center in scaled document coordinates.
+GnuBook.prototype.centerX1up = function() {
+ var centerX;
+ if ($('#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() {
}
+// zoom2up(direction)
+//______________________________________________________________________________
+GnuBook.prototype.zoom2up = function(direction) {
+
+ // 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;
+ }
+ }
+
+ return result;
+}
+
// jumpToPage()
//______________________________________________________________________________
// Attempts to jump to page. Returns true if page could be found, false otherwise.
// By checking against min/max we do nothing if requested index
// is current
- if (index < Math.min(this.currentIndexL, this.currentIndexR)) {
+ if (index < Math.min(this.twoPage.currentIndexL, this.twoPage.currentIndexR)) {
this.flipBackToIndex(index);
- } else if (index > Math.max(this.currentIndexL, this.currentIndexR)) {
+ } 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;
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); // $$$ TODO preserve center
}
}
});
var gbPageView = $("#GBcontainer").append("<div id='GBpageview'></div>");
+
this.resizePageView();
this.jumpToIndex(startLeaf);
this.displayedIndices = [];
this.drawLeafsOnePage();
- $('#GBzoom').text(100/this.reduce);
// Bind mouse handlers
// Disable mouse click to avoid selected/highlighted page images - bug 354239
gbPageView.bind('mousedown', function(e) {
+ // $$$ 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
targetLeaf = this.lastDisplayableIndex();
}
- this.currentIndexL = null;
- this.currentIndexR = null;
- this.pruneUnusedImgs();
+ //this.twoPage.currentIndexL = null;
+ //this.twoPage.currentIndexR = null;
+ //this.pruneUnusedImgs();
var currentSpreadIndices = this.getSpreadIndices(targetLeaf);
- this.currentIndexL = currentSpreadIndices[0];
- this.currentIndexR = currentSpreadIndices[1];
- this.firstIndex = this.currentIndexL;
+ 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.currentIndexL - this.numLeafs)*this.twoPageEdgeW/this.numLeafs/2);
-
- var gutter = middle + this.gutterOffsetForIndex(this.currentIndexL);
-
- var scaledWL = this.getPageWidth2UP(this.currentIndexL);
- var scaledWR = this.getPageWidth2UP(this.currentIndexR);
- var leafEdgeWidthL = this.leafEdgeWidth(this.currentIndexL);
- 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;
-
- // 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;
+ //console.dir(this.twoPage);
- //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.currentIndexR);
- var width = this.getPageWidth(this.currentIndexR);
- 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(' + this.imagesBaseURL + 'right_edges.png) repeat scroll 0% 0%',
- width: leafEdgeWidthR + 'px',
- height: this.twoPageH-1 + 'px',
+ 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(' + this.imagesBaseURL + 'left_edges.png) repeat scroll 0% 0%',
- width: leafEdgeWidthL + 'px',
- height: this.twoPageH-1 + 'px',
- left: bookCoverDivLeft+10+'px',
- top: bookCoverDivTop+10+'px',
+ 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.displayedIndices = [];
//this.indicesToDisplay=[firstLeaf, firstLeaf+1];
this.drawLeafsTwoPage();
this.updateSearchHilites2UP();
+ this.updateToolbarZoom(this.reduce);
this.prefetch();
- $('#GBzoom').text((100*this.twoPageH/this.getPageHeight(this.currentIndexL)).toString().substr(0,4));
}
// prepareTwoPagePopUp()
// events for these divs.
//______________________________________________________________________________
GnuBook.prototype.prepareTwoPagePopUp = function() {
+
this.twoPagePopUp = document.createElement('div');
$(this.twoPagePopUp).css({
border: '1px solid black',
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'
});
});
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.currentIndexL and
-// this.currentIndexR
-// 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 firstIndex = this.currentIndexL;
- var secondIndex = this.currentIndexR;
+
+ 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; // $$$ really set this here?
+}
+
+GnuBook.prototype.getIdealSpreadSize = function(firstIndex, secondIndex) {
+ var ideal = {};
+
+ // We check which page is closest to a "normal" page and use that to set the height
+ // for both pages. This means that foldouts and other odd size pages will be displayed
+ // smaller than the nominal zoom amount.
var canon5Dratio = 1.5;
- var firstIndexRatio = this.getPageHeight(firstIndex) / this.getPageWidth(firstIndex);
- var secondIndexRatio = this.getPageHeight(secondIndex) / this.getPageWidth(secondIndex);
+ var first = {
+ height: this.getPageHeight(firstIndex),
+ width: this.getPageWidth(firstIndex)
+ }
+
+ var second = {
+ height: this.getPageHeight(secondIndex),
+ width: this.getPageWidth(secondIndex)
+ }
+
+ var firstIndexRatio = first.height / first.width;
+ var secondIndexRatio = second.height / second.width;
//console.log('firstIndexRatio = ' + firstIndexRatio + ' secondIndexRatio = ' + secondIndexRatio);
var ratio;
}
var totalLeafEdgeWidth = parseInt(this.numLeafs * 0.1);
- var maxLeafEdgeWidth = parseInt($('#GBcontainer').width() * 0.1);
- totalLeafEdgeWidth = Math.min(totalLeafEdgeWidth, maxLeafEdgeWidth);
+ var maxLeafEdgeWidth = parseInt($('#GBcontainer').attr('clientWidth') * 0.1);
+ ideal.totalLeafEdgeWidth = Math.min(totalLeafEdgeWidth, maxLeafEdgeWidth);
- $('#GBcontainer').css('overflow', 'hidden');
-
- var idealWidth = ($('#GBcontainer').width() - 30 - totalLeafEdgeWidth)>>1;
- var idealHeight = $('#GBcontainer').height() - 30;
- //console.log('init idealWidth='+idealWidth+' idealHeight='+idealHeight + ' ratio='+ratio);
+ var widthOutsidePages = 2 * (this.twoPage.coverInternalPadding + this.twoPage.coverExternalPadding) + ideal.totalLeafEdgeWidth;
+ var heightOutsidePages = 2* (this.twoPage.coverInternalPadding + this.twoPage.coverExternalPadding);
+
+ ideal.width = ($('#GBcontainer').width() - widthOutsidePages) >> 1;
+ ideal.width -= 10; // $$$ 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); // $$$ Assumes leaf edge width constant at all zoom levels
+ spreadSize.totalLeafEdgeWidth = Math.min(totalLeafEdgeWidth, maxLeafEdgeWidth);
- this.twoPageH = idealHeight;
- this.twoPageW = idealWidth;
- this.twoPageRatio = ratio;
- this.twoPageEdgeW = totalLeafEdgeWidth; // The combined width of both edges
+ // $$$ 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;
+}
+// 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() {
// $$$ we should be cleaner with our idea of which index is active in 1up/2up
- if (this.mode == this.constMode1up || this.mode == this.constMode2up) {
+ if (this.mode == this.constMode1up || this.mode == this.constMode2up || this.mode == this.constModeThumb) {
return this.firstIndex;
} else {
throw 'currentIndex called for unimplemented mode ' + this.mode;
GnuBook.prototype.flipBackToIndex = function(index) {
if (1 == this.mode) return;
- var leftIndex = this.currentIndexL;
+ var leftIndex = this.twoPage.currentIndexL;
// $$$ 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.currentIndexL;
+ var leftLeaf = this.twoPage.currentIndexL;
- var oldLeafEdgeWidthL = this.leafEdgeWidth(this.currentIndexL);
+ 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 = ($('#GBcontainer').height() - this.twoPageH) >> 1;
-
+ var top = this.twoPageTop();
+ var gutter = this.twoPage.middle + this.gutterOffsetForIndex(newIndexL);
+
//console.log('leftEdgeTmpW ' + leafEdgeTmpW);
//console.log(' gutter ' + gutter + ', scaledWL ' + scaledWL + ', newLeafEdgeWL ' + newLeafEdgeWidthL);
// 4. After step 3 is finished, do the following:
// - remove leafEdgeTmp from the dom.
// - resize and move the right leaf edge (leafEdgeR) to left=gutter+newWidthR
- // and width=twoPageEdgeW-newLeafEdgeWidthL.
+ // and width=twoPage.edgeWidth-newLeafEdgeWidthL.
// - resize and move the left leaf edge (leafEdgeL) to left=gutter-newWidthL-newLeafEdgeWidthL
// and width=newLeafEdgeWidthL.
- // - resize the back cover (twoPageDiv) to left=gutter-newWidthL-newLeafEdgeWidthL-10
- // and width=newWidthL+newWidthR+twoPageEdgeW+20
+ // - resize the back cover (twoPage.coverDiv) to left=gutter-newWidthL-newLeafEdgeWidthL-10
+ // and width=newWidthL+newWidthR+twoPage.edgeWidth+20
// - move new left leaf (newIndexL) forward to zindex=2 so it can receive clicks.
// - remove old left and right leafs from the dom [pruneUnusedImgs()].
// - prefetch new adjacent leafs.
borderWidth: '1px 0px 1px 1px',
background: 'transparent url(' + this.imagesBaseURL + 'left_edges.png) repeat scroll 0% 0%',
width: leafEdgeTmpW + 'px',
- height: this.twoPageH-1 + 'px',
+ height: this.twoPage.height-1 + 'px',
left: leftEdgeTmpLeft + 'px',
top: top+'px',
position: 'absolute',
zIndex:1000
- }).appendTo('#GBcontainer');
+ }).appendTo('#GBtwopageview');
//$(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;
+
+ // $$$ TODO refactor with opposite direction flip
+
+ self.twoPage.currentIndexL = newIndexL;
+ self.twoPage.currentIndexR = newIndexR;
+ self.twoPage.scaledWL = newWidthL;
+ self.twoPage.scaledWR = newWidthR;
+ self.twoPage.gutter = gutter;
- self.currentIndexL = newIndexL;
- self.currentIndexR = newIndexR;
- self.firstIndex = self.currentIndexL;
+ self.firstIndex = self.twoPage.currentIndexL;
self.displayedIndices = [newIndexL, newIndexR];
- self.setClickHandlers();
self.pruneUnusedImgs();
self.prefetch();
self.animating = false;
self.updateSearchHilites2UP();
self.updatePageNumBox2UP();
- //$('#GBzoom').text((self.twoPageH/self.getPageHeight(newIndexL)).toString().substr(0,4));
+
+ // self.twoPagePlaceFlipAreas(); // No longer used
+ self.setMouseHandlers2UP();
+ self.twoPageSetCursor();
if (self.animationFinishedCallback) {
self.animationFinishedCallback();
}
if (null == index) {
- index = this.currentIndexR+2; // $$$ 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.currentIndexL);
- 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 = ($('#GBcontainer').height() - this.twoPageH) >> 1;
-
- var scaledW = this.getPageWidth2UP(this.currentIndexR);
-
- var middle = ($('#GBcontainer').width() >> 1);
- var currGutter = middle + this.gutterOffsetForIndex(this.currentIndexL);
+ 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',
borderWidth: '1px 0px 1px 1px',
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.currentIndexL);
- var currWidthR = this.getPageWidth2UP(this.currentIndexR);
+ 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.currentIndexR]).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'
});
$(self.leafEdgeTmp).remove();
self.leafEdgeTmp = null;
- self.currentIndexL = newIndexL;
- self.currentIndexR = newIndexR;
- self.firstIndex = self.currentIndexL;
+ self.twoPage.currentIndexL = newIndexL;
+ self.twoPage.currentIndexR = newIndexR;
+ self.twoPage.scaledWL = newWidthL;
+ self.twoPage.scaledWR = newWidthR;
+ self.twoPage.gutter = gutter;
+
+ self.firstIndex = self.twoPage.currentIndexL;
self.displayedIndices = [newIndexL, newIndexR];
- self.setClickHandlers();
self.pruneUnusedImgs();
self.prefetch();
self.animating = false;
self.updateSearchHilites2UP();
self.updatePageNumBox2UP();
- //$('#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();
});
}
-// setClickHandlers
+// setMouseHandlers2UP
//______________________________________________________________________________
-GnuBook.prototype.setClickHandlers = function() {
- var self = this;
- $(this.prefetchedImgs[this.currentIndexL]).click(function() {
+GnuBook.prototype.setMouseHandlers2UP = function() {
+ /*
+ $(this.prefetchedImgs[this.twoPage.currentIndexL]).bind('dblclick', function() {
//self.prevPage();
self.autoStop();
self.left();
});
- $(this.prefetchedImgs[this.currentIndexR]).click(function() {
+ $(this.prefetchedImgs[this.twoPage.currentIndexR]).bind('dblclick', function() {
//self.nextPage();'
self.autoStop();
self.right();
});
+ */
+
+ this.setDragHandler2UP( this.prefetchedImgs[this.twoPage.currentIndexL] );
+ this.setClickHandler2UP( this.prefetchedImgs[this.twoPage.currentIndexL],
+ { self: this },
+ function(e) {
+ e.data.self.left();
+ }
+ );
+
+ this.setDragHandler2UP( this.prefetchedImgs[this.twoPage.currentIndexR] );
+ this.setClickHandler2UP( this.prefetchedImgs[this.twoPage.currentIndexR],
+ { self: this },
+ function(e) {
+ e.data.self.right();
+ }
+ );
}
// prefetchImg()
//______________________________________________________________________________
GnuBook.prototype.prefetchImg = function(index) {
- if (undefined == this.prefetchedImgs[index]) {
+ var pageURI = this.getPageURI(index);
+
+ // Load image if not loaded or URI has changed (e.g. due to scaling)
+ var loadImage = false;
+ if (undefined == this.prefetchedImgs[index]) {
+ //console.log('no image for ' + index);
+ loadImage = true;
+ } else if (pageURI != this.prefetchedImgs[index].uri) {
+ //console.log('uri changed for ' + index);
+ loadImage = true;
+ }
+
+ if (loadImage) {
//console.log('prefetching ' + index);
var img = document.createElement("img");
- img.src = this.getPageURI(index);
+ img.src = pageURI;
+ img.uri = pageURI; // browser may rewrite src so we stash raw URI here
this.prefetchedImgs[index] = img;
}
}
var height = this.getPageHeight(prevL);
var width = this.getPageWidth(prevL);
- var middle = ($('#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.currentIndexL+2, this.currentIndexL+3];
-// o.L = this.currentIndexL+2;
-// o.R = this.currentIndexL+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.currentIndexL-2, this.currentIndexL-1];
-// o.L = this.currentIndexL-2;
-// o.R = this.currentIndexL-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.currentIndexL + ' ' + this.currentIndexR);
+ //console.log('current: ' + this.twoPage.currentIndexL + ' ' + this.twoPage.currentIndexR);
for (var key in this.prefetchedImgs) {
//console.log('key is ' + key);
- if ((key != this.currentIndexL) && (key != this.currentIndexR)) {
+ if ((key != this.twoPage.currentIndexL) && (key != this.twoPage.currentIndexR)) {
//console.log('removing key '+ key);
$(this.prefetchedImgs[key]).remove();
}
- if ((key < this.currentIndexL-4) || (key > this.currentIndexR+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.currentIndexL-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.currentIndexL; i++) {
+ for (i = lim; i < this.twoPage.currentIndexL; i++) {
this.prefetchImg(i);
}
- if (this.numLeafs > (this.currentIndexR+1)) {
- lim = Math.min(this.currentIndexR+4, this.numLeafs-1);
- for (i=this.currentIndexR+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); // $$$ we assume width is relative to current spread
}
// search()
}
}
+// twoPageGutter()
+//______________________________________________________________________________
+// Returns the position of the gutter (line between the page images)
+GnuBook.prototype.twoPageGutter = function() {
+ return this.twoPage.middle + this.gutterOffsetForIndex(this.twoPage.currentIndexL);
+}
+
+// twoPageTop()
+//______________________________________________________________________________
+// Returns the offset for the top of the page images
+GnuBook.prototype.twoPageTop = function() {
+ return this.twoPage.coverExternalPadding + this.twoPage.coverInternalPadding; // $$$ + 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.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.currentIndexL);
-
+ 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",
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.currentIndexL, self.currentIndexR) >= 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 jumpIndex = this.currentIndexL - ($(this.leafEdgeL).offset().left + $(this.leafEdgeL).width() - pageX) * 10;
+ 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.currentIndexL - 2);
+ jumpIndex = GnuBook.util.clamp(Math.round(jumpIndex), this.firstDisplayableIndex(), this.twoPage.currentIndexL - 2);
return jumpIndex;
} else {
- var jumpIndex = this.currentIndexL + ($(this.leafEdgeL).offset().left + $(this.leafEdgeL).width() - pageX) * 10;
- jumpIndex = GnuBook.util.clamp(Math.round(jumpIndex), this.currentIndexL + 2, this.lastDisplayableIndex());
+ 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 jumpIndex = this.currentIndexR + (pageX - $(this.leafEdgeR).offset().left) * 10;
- jumpIndex = GnuBook.util.clamp(Math.round(jumpIndex), this.currentIndexR + 2, this.lastDisplayableIndex());
+ 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 jumpIndex = this.currentIndexR - (pageX - $(this.leafEdgeR).offset().left) * 10;
- jumpIndex = GnuBook.util.clamp(Math.round(jumpIndex), this.firstDisplayableIndex(), this.currentIndexR - 2);
+ 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, ui) {
- var modeButtons = '';
-
- // $$$ workaround for not displaying short books in 2up
- if (this.canSwitchToMode(this.constMode1up) && this.canSwitchToMode(this.constMode2up)) {
- modeButtons = " <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;'/>";
- }
$("#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>"
- + modeButtons
+ + " <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;'/>"
+ + " <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");
'.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',
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);
});
}
+// 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
//______________________________________________________________________________
// Returns the index of the first visible page, dependent on the mode.
// 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
// 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('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 "<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
projects / bookreader.git / blobdiff