// Mode constants
this.constMode1up = 1;
this.constMode2up = 2;
+ this.constModeThumb = 3;
// Zoom levels
this.reductionFactors = [0.5, 1, 2, 4, 8, 16];
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');
this.resizePageView();
this.firstIndex = startIndex;
this.jumpToIndex(startIndex);
- } else {
+ } else if (3 == this.mode) {
+ this.firstIndex = startIndex;
+ this.jumpToIndex(startIndex);
+ this.prepareThumbnailView();
+ } else {
//this.resizePageView();
this.displayedIndices=[0];
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();
}
});
}
+// 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;
+ });
+}
+
// drawLeafsOnePage()
//______________________________________________________________________________
GnuBook.prototype.drawLeafsOnePage = function() {
}
+// drawLeafsThumbnail()
+//______________________________________________________________________________
+GnuBook.prototype.drawLeafsThumbnail = function() {
+ //alert('drawing leafs!');
+ this.timer = null;
+
+
+ var scrollTop = $('#GBcontainer').attr('scrollTop');
+ var scrollBottom = scrollTop + $('#GBcontainer').height();
+ //console.log('top=' + scrollTop + ' bottom='+scrollBottom);
+
+ var indicesToDisplay = [];
+
+ var i;
+ var leafTop = 0;
+ var leafBottom = 0;
+ var viewHeight = 0;
+ var width = 0;
+ for (i=0; i<this.numLeafs; i++) {
+ var height = parseInt(this.getPageHeight(i)/this.thumbScale);
+
+ leafBottom += height;
+ //console.log('leafTop = '+leafTop+ ' pageH = ' + this.pageH[i] + 'leafTop>=scrollTop=' + (leafTop>=scrollTop));
+ var topInView = (leafTop >= scrollTop) && (leafTop <= scrollBottom);
+ var bottomInView = (leafBottom >= scrollTop) && (leafBottom <= scrollBottom);
+ var middleInView = (leafTop <=scrollTop) && (leafBottom>=scrollBottom);
+ if (topInView | bottomInView | middleInView) {
+ //console.log('displayed: ' + this.displayedIndices);
+ //console.log('to display: ' + i);
+ indicesToDisplay.push(i);
+ }
+ leafTop += height +10;
+ leafBottom += 10;
+ }
+
+ var firstIndexToDraw = indicesToDisplay[0];
+ this.firstIndex = firstIndexToDraw;
+
+ // Update hash, but only if we're currently displaying a leaf
+ // Hack that fixes #365790
+ if (this.displayedIndices.length > 0) {
+ this.updateLocationHash();
+ }
+
+ if ((0 != firstIndexToDraw) && (1 < this.reduce)) {
+ firstIndexToDraw--;
+ indicesToDisplay.unshift(firstIndexToDraw);
+ }
+
+ var lastIndexToDraw = indicesToDisplay[indicesToDisplay.length-1];
+ if ( ((this.numLeafs-1) != lastIndexToDraw) && (1 < this.reduce) ) {
+ indicesToDisplay.push(lastIndexToDraw+1);
+ }
+
+ leafTop = 0;
+ var i;
+ for (i=0; i<firstIndexToDraw; i++) {
+ leafTop += parseInt(this.getPageHeight(i)/this.thumbScale) +10;
+ }
+
+ //var viewWidth = $('#GBpageview').width(); //includes scroll bar width
+ var viewWidth = $('#GBcontainer').attr('scrollWidth');
+
+
+ for (i=0; i<indicesToDisplay.length; i++) {
+ var index = indicesToDisplay[i];
+ var height = parseInt(this.getPageHeight(index)/this.thumbScale);
+
+ if(-1 == jQuery.inArray(indicesToDisplay[i], this.displayedIndices)) {
+ var width = parseInt(this.getPageWidth(index)/this.thumbScale);
+ //console.log("displaying leaf " + indicesToDisplay[i] + ' leafTop=' +leafTop);
+ var div = document.createElement("div");
+ div.className = 'GBpagediv1up';
+ div.id = 'pagediv'+index;
+ div.style.position = "absolute";
+ $(div).css('top', leafTop + 'px');
+ var left = (viewWidth-width)>>1;
+ if (left<0) left = 0;
+ $(div).css('left', left+'px');
+ $(div).css('width', width+'px');
+ $(div).css('height', height+'px');
+ //$(div).text('loading...');
+
+ // thumbnails are hyperlinked, do not need drag handler
+ //this.setDragHandler(div);
+
+ // link to page in single page mode
+ var link = document.createElement("a");
+ link.href = '#page/' + (this.getPageNum(index)) +'/mode/1up' ;
+ $(div).append(link);
+
+ $('#GBpageview').append(div);
+
+ var img = document.createElement("img");
+ img.src = this.getPageURI(index);
+ $(img).css('width', width+'px');
+ $(img).css('height', height+'px');
+ img.style.border = "0";
+ $(link).append(img);
+
+
+ } else {
+ //console.log("not displaying " + indicesToDisplay[i] + ' score=' + jQuery.inArray(indicesToDisplay[i], this.displayedIndices));
+ }
+
+ leafTop += height +10;
+
+ }
+
+ for (i=0; i<this.displayedIndices.length; i++) {
+ if (-1 == jQuery.inArray(this.displayedIndices[i], indicesToDisplay)) {
+ var index = this.displayedIndices[i];
+ //console.log('Removing leaf ' + index);
+ //console.log('id='+'#pagediv'+index+ ' top = ' +$('#pagediv'+index).css('top'));
+ $('#pagediv'+index).remove();
+ } else {
+ //console.log('NOT Removing leaf ' + this.displayedIndices[i]);
+ }
+ }
+
+ this.displayedIndices = indicesToDisplay.slice();
+ this.updateSearchHilites();
+
+ if (null != this.getPageNum(firstIndexToDraw)) {
+ $("#GBpagenum").val(this.getPageNum(this.currentIndex()));
+ } else {
+ $("#GBpagenum").val('');
+ }
+
+ this.updateToolbarZoom(this.reduce);
+
+}
+
// drawLeafsTwoPage()
//______________________________________________________________________________
GnuBook.prototype.drawLeafsTwoPage = function() {
this.displayedIndices = [this.twoPage.currentIndexL, this.twoPage.currentIndexR];
- this.setClickHandlers();
+ this.setMouseHandlers2UP();
this.twoPageSetCursor();
this.updatePageNumBox2UP();
this.updateToolbarZoom(this.reduce);
- this.twoPagePlaceFlipAreas();
+ // this.twoPagePlaceFlipAreas(); // No longer used
}
return this.zoom1up(direction);
case this.constMode2up:
return this.zoom2up(direction);
+ case this.constModeThumb:
+ return this.zoomThumb(direction);
}
}
this.updateToolbarZoom(this.reduce);
}
+// zoomThumb(dir)
+//______________________________________________________________________________
+GnuBook.prototype.zoomThumb = function(dir) {
+ if (3 == this.mode) { //can only zoom in 1-page mode
+ this.switchMode(1);
+ return;
+ }
+}
+
// resizePageView()
//______________________________________________________________________________
GnuBook.prototype.resizePageView = function() {
// 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);
}
if (1 == mode) {
this.reduce = this.quantizeReduce(this.reduce);
this.prepareOnePageView();
+ } else if (3 == mode) {
+ this.reduce = this.quantizeReduce(this.reduce);
+ this.prepareThumbnailView();
} else {
this.twoPage.autofit = false; // Take zoom level from other mode
this.reduce = this.quantizeReduce(this.reduce);
gbPageView[0].onselectstart = function(e) { return false; };
}
+//prepareThumbnailView()
+//______________________________________________________________________________
+GnuBook.prototype.prepareThumbnailView = function() {
+
+ // var startLeaf = this.displayedIndices[0];
+ var startLeaf = this.currentIndex();
+
+ $('#GBcontainer').empty();
+ $('#GBcontainer').css({
+ overflowY: 'scroll',
+ overflowX: 'auto'
+ });
+
+ var gbPageView = $("#GBcontainer").append("<div id='GBpageview'></div>");
+
+ this.resizePageView();
+
+ this.jumpToIndex(startLeaf);
+ this.displayedIndices = [];
+
+ 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:
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.firstIndex = this.twoPage.currentIndexL;
this.calculateSpreadSize(); //sets twoPage.width, twoPage.height and others
-
+
+ this.pruneUnusedImgs();
+ this.prefetch(); // Preload images or reload if scaling has changed
+
//console.dir(this.twoPage);
// Add the two page view
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',
}).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',
}).bind('mousedown', function(e) {
e.preventDefault();
}).appendTo('#GBtwopageview');
-
+ */
+
this.prepareTwoPagePopUp();
-
+
this.displayedIndices = [];
//this.indicesToDisplay=[firstLeaf, firstLeaf+1];
var widthOutsidePages = 2 * (this.twoPage.coverInternalPadding + this.twoPage.coverExternalPadding) + ideal.totalLeafEdgeWidth;
var heightOutsidePages = 2* (this.twoPage.coverInternalPadding + this.twoPage.coverExternalPadding);
- ideal.width = ($('#GBcontainer').attr('clientWidth') - widthOutsidePages) >> 1;
+ ideal.width = ($('#GBcontainer').width() - widthOutsidePages) >> 1;
ideal.width -= 10; // $$$ fudge factor
- ideal.height = $('#GBcontainer').attr('clientHeight') - heightOutsidePages;
+ ideal.height = $('#GBcontainer').height() - heightOutsidePages;
ideal.height -= 20; // fudge factor
//console.log('init idealWidth='+ideal.width+' idealHeight='+ideal.height + ' ratio='+ratio);
// Returns the currently active index.
GnuBook.prototype.currentIndex = function() {
// $$$ we should be cleaner with our idea of which index is active in 1up/2up
- if (this.mode == this.constMode1up || this.mode == this.constMode2up) {
+ if (this.mode == this.constMode1up || this.mode == this.constMode2up || this.mode == this.constModeThumb) {
return this.firstIndex;
} else {
throw 'currentIndex called for unimplemented mode ' + this.mode;
self.leafEdgeTmp = null;
// $$$ 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.twoPageSetCursor();
self.pruneUnusedImgs();
self.prefetch();
self.animating = false;
self.updateSearchHilites2UP();
self.updatePageNumBox2UP();
- self.twoPagePlaceFlipAreas();
+ // self.twoPagePlaceFlipAreas(); // No longer used
+ self.setMouseHandlers2UP();
+ self.twoPageSetCursor();
if (self.animationFinishedCallback) {
self.animationFinishedCallback();
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.twoPageSetCursor();
self.pruneUnusedImgs();
self.prefetch();
self.animating = false;
self.updateSearchHilites2UP();
self.updatePageNumBox2UP();
- self.twoPagePlaceFlipAreas();
+ // self.twoPagePlaceFlipAreas(); // No longer used
+ self.setMouseHandlers2UP();
+ self.twoPageSetCursor();
if (self.animationFinishedCallback) {
self.animationFinishedCallback();
});
}
-// setClickHandlers
+// setMouseHandlers2UP
//______________________________________________________________________________
-GnuBook.prototype.setClickHandlers = function() {
- var self = this;
+GnuBook.prototype.setMouseHandlers2UP = function() {
/*
$(this.prefetchedImgs[this.twoPage.currentIndexL]).bind('dblclick', function() {
//self.prevPage();
});
*/
- this.setDragHandler( $(this.prefetchedImgs[this.twoPage.currentIndexL]) );
- this.setDragHandler( $(this.prefetchedImgs[this.twoPage.currentIndexR]) );
+ 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;
}
}
//______________________________________________________________________________
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.twoPagePlaceFlipAreas = function() {
// We don't set top since it shouldn't change relative to view
$(this.twoPage.leftFlipArea).css({
- left: this.twoPageLeftFlipAreaLeft() + 'px'
+ left: this.twoPageLeftFlipAreaLeft() + 'px',
+ width: this.twoPageFlipAreaWidth() + 'px'
});
$(this.twoPage.rightFlipArea).css({
- left: this.twoPageRightFlipAreaLeft() + 'px'
+ left: this.twoPageRightFlipAreaLeft() + 'px',
+ width: this.twoPageFlipAreaWidth() + 'px'
});
}
+ " <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>");
'.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',
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
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;
}
projects / bookreader.git / blobdiff