Convert the text layer builder to a class
This commit is contained in:
Tim van der Meij
parent
2a052c4aad
commit
a968da8887
@ -28,298 +28,303 @@ var RENDER_DELAY = 200; // ms
|
||||
* contain text that matches the PDF text they are overlaying. This object
|
||||
* also provides a way to highlight text that is being searched for.
|
||||
*/
|
||||
var TextLayerBuilder = function textLayerBuilder(options) {
|
||||
this.textLayerDiv = options.textLayerDiv;
|
||||
this.layoutDone = false;
|
||||
this.divContentDone = false;
|
||||
this.pageIdx = options.pageIndex;
|
||||
this.matches = [];
|
||||
this.lastScrollSource = options.lastScrollSource || null;
|
||||
this.viewport = options.viewport;
|
||||
this.isViewerInPresentationMode = options.isViewerInPresentationMode;
|
||||
this.textDivs = [];
|
||||
var TextLayerBuilder = (function TextLayerBuilderClosure() {
|
||||
function TextLayerBuilder(options) {
|
||||
this.textLayerDiv = options.textLayerDiv;
|
||||
this.layoutDone = false;
|
||||
this.divContentDone = false;
|
||||
this.pageIdx = options.pageIndex;
|
||||
this.matches = [];
|
||||
this.lastScrollSource = options.lastScrollSource || null;
|
||||
this.viewport = options.viewport;
|
||||
this.isViewerInPresentationMode = options.isViewerInPresentationMode;
|
||||
this.textDivs = [];
|
||||
|
||||
if (typeof PDFFindController === 'undefined') {
|
||||
window.PDFFindController = null;
|
||||
if (typeof PDFFindController === 'undefined') {
|
||||
window.PDFFindController = null;
|
||||
}
|
||||
}
|
||||
|
||||
this.renderLayer = function textLayerBuilder_renderLayer() {
|
||||
var textLayerFrag = document.createDocumentFragment();
|
||||
var textDivs = this.textDivs;
|
||||
var textDivsLength = textDivs.length;
|
||||
var canvas = document.createElement('canvas');
|
||||
var ctx = canvas.getContext('2d');
|
||||
TextLayerBuilder.prototype = {
|
||||
renderLayer: function TextLayerBuilder_renderLayer() {
|
||||
var textLayerFrag = document.createDocumentFragment();
|
||||
var textDivs = this.textDivs;
|
||||
var textDivsLength = textDivs.length;
|
||||
var canvas = document.createElement('canvas');
|
||||
var ctx = canvas.getContext('2d');
|
||||
|
||||
// No point in rendering many divs as it would make the browser
|
||||
// unusable even after the divs are rendered.
|
||||
if (textDivsLength > MAX_TEXT_DIVS_TO_RENDER) {
|
||||
return;
|
||||
}
|
||||
|
||||
for (var i = 0; i < textDivsLength; i++) {
|
||||
var textDiv = textDivs[i];
|
||||
if (textDiv.dataset.isWhitespace !== undefined) {
|
||||
continue;
|
||||
}
|
||||
|
||||
ctx.font = textDiv.style.fontSize + ' ' + textDiv.style.fontFamily;
|
||||
var width = ctx.measureText(textDiv.textContent).width;
|
||||
if (width > 0) {
|
||||
textLayerFrag.appendChild(textDiv);
|
||||
var textScale = textDiv.dataset.canvasWidth / width;
|
||||
var rotation = textDiv.dataset.angle;
|
||||
var transform = 'scale(' + textScale + ', 1)';
|
||||
transform = 'rotate(' + rotation + 'deg) ' + transform;
|
||||
CustomStyle.setProp('transform' , textDiv, transform);
|
||||
CustomStyle.setProp('transformOrigin' , textDiv, '0% 0%');
|
||||
}
|
||||
}
|
||||
|
||||
this.textLayerDiv.appendChild(textLayerFrag);
|
||||
this.renderingDone = true;
|
||||
this.updateMatches();
|
||||
};
|
||||
|
||||
this.setupRenderLayoutTimer =
|
||||
function textLayerBuilder_setupRenderLayoutTimer() {
|
||||
// Schedule renderLayout() if the user has been scrolling,
|
||||
// otherwise run it right away.
|
||||
var self = this;
|
||||
var lastScroll = (this.lastScrollSource === null ?
|
||||
0 : this.lastScrollSource.lastScroll);
|
||||
|
||||
if (Date.now() - lastScroll > RENDER_DELAY) { // Render right away
|
||||
this.renderLayer();
|
||||
} else { // Schedule
|
||||
if (this.renderTimer) {
|
||||
clearTimeout(this.renderTimer);
|
||||
}
|
||||
this.renderTimer = setTimeout(function() {
|
||||
self.setupRenderLayoutTimer();
|
||||
}, RENDER_DELAY);
|
||||
}
|
||||
};
|
||||
|
||||
this.appendText = function textLayerBuilder_appendText(geom, styles) {
|
||||
var style = styles[geom.fontName];
|
||||
var textDiv = document.createElement('div');
|
||||
this.textDivs.push(textDiv);
|
||||
if (!/\S/.test(geom.str)) {
|
||||
textDiv.dataset.isWhitespace = true;
|
||||
return;
|
||||
}
|
||||
var tx = PDFJS.Util.transform(this.viewport.transform, geom.transform);
|
||||
var angle = Math.atan2(tx[1], tx[0]);
|
||||
if (style.vertical) {
|
||||
angle += Math.PI / 2;
|
||||
}
|
||||
var fontHeight = Math.sqrt((tx[2] * tx[2]) + (tx[3] * tx[3]));
|
||||
var fontAscent = (style.ascent ? style.ascent * fontHeight :
|
||||
(style.descent ? (1 + style.descent) * fontHeight : fontHeight));
|
||||
|
||||
textDiv.style.position = 'absolute';
|
||||
textDiv.style.left = (tx[4] + (fontAscent * Math.sin(angle))) + 'px';
|
||||
textDiv.style.top = (tx[5] - (fontAscent * Math.cos(angle))) + 'px';
|
||||
textDiv.style.fontSize = fontHeight + 'px';
|
||||
textDiv.style.fontFamily = style.fontFamily;
|
||||
|
||||
textDiv.textContent = geom.str;
|
||||
textDiv.dataset.fontName = geom.fontName;
|
||||
textDiv.dataset.angle = angle * (180 / Math.PI);
|
||||
if (style.vertical) {
|
||||
textDiv.dataset.canvasWidth = geom.height * this.viewport.scale;
|
||||
} else {
|
||||
textDiv.dataset.canvasWidth = geom.width * this.viewport.scale;
|
||||
}
|
||||
};
|
||||
|
||||
this.setTextContent = function textLayerBuilder_setTextContent(textContent) {
|
||||
this.textContent = textContent;
|
||||
|
||||
var textItems = textContent.items;
|
||||
for (var i = 0, len = textItems.length; i < len; i++) {
|
||||
this.appendText(textItems[i], textContent.styles);
|
||||
}
|
||||
this.divContentDone = true;
|
||||
this.setupRenderLayoutTimer();
|
||||
};
|
||||
|
||||
this.convertMatches = function textLayerBuilder_convertMatches(matches) {
|
||||
var i = 0;
|
||||
var iIndex = 0;
|
||||
var bidiTexts = this.textContent.items;
|
||||
var end = bidiTexts.length - 1;
|
||||
var queryLen = (PDFFindController === null ?
|
||||
0 : PDFFindController.state.query.length);
|
||||
var ret = [];
|
||||
|
||||
for (var m = 0, len = matches.length; m < len; m++) {
|
||||
// Calculate the start position.
|
||||
var matchIdx = matches[m];
|
||||
|
||||
// Loop over the divIdxs.
|
||||
while (i !== end && matchIdx >= (iIndex + bidiTexts[i].str.length)) {
|
||||
iIndex += bidiTexts[i].str.length;
|
||||
i++;
|
||||
}
|
||||
|
||||
if (i === bidiTexts.length) {
|
||||
console.error('Could not find a matching mapping');
|
||||
}
|
||||
|
||||
var match = {
|
||||
begin: {
|
||||
divIdx: i,
|
||||
offset: matchIdx - iIndex
|
||||
}
|
||||
};
|
||||
|
||||
// Calculate the end position.
|
||||
matchIdx += queryLen;
|
||||
|
||||
// Somewhat the same array as above, but use > instead of >= to get
|
||||
// the end position right.
|
||||
while (i !== end && matchIdx > (iIndex + bidiTexts[i].str.length)) {
|
||||
iIndex += bidiTexts[i].str.length;
|
||||
i++;
|
||||
}
|
||||
|
||||
match.end = {
|
||||
divIdx: i,
|
||||
offset: matchIdx - iIndex
|
||||
};
|
||||
ret.push(match);
|
||||
}
|
||||
|
||||
return ret;
|
||||
};
|
||||
|
||||
this.renderMatches = function textLayerBuilder_renderMatches(matches) {
|
||||
// Early exit if there is nothing to render.
|
||||
if (matches.length === 0) {
|
||||
return;
|
||||
}
|
||||
|
||||
var bidiTexts = this.textContent.items;
|
||||
var textDivs = this.textDivs;
|
||||
var prevEnd = null;
|
||||
var isSelectedPage = (PDFFindController === null ?
|
||||
false : (this.pageIdx === PDFFindController.selected.pageIdx));
|
||||
var selectedMatchIdx = (PDFFindController === null ?
|
||||
-1 : PDFFindController.selected.matchIdx);
|
||||
var highlightAll = (PDFFindController === null ?
|
||||
false : PDFFindController.state.highlightAll);
|
||||
var infinity = {
|
||||
divIdx: -1,
|
||||
offset: undefined
|
||||
};
|
||||
|
||||
function beginText(begin, className) {
|
||||
var divIdx = begin.divIdx;
|
||||
textDivs[divIdx].textContent = '';
|
||||
appendTextToDiv(divIdx, 0, begin.offset, className);
|
||||
}
|
||||
|
||||
function appendTextToDiv(divIdx, fromOffset, toOffset, className) {
|
||||
var div = textDivs[divIdx];
|
||||
var content = bidiTexts[divIdx].str.substring(fromOffset, toOffset);
|
||||
var node = document.createTextNode(content);
|
||||
if (className) {
|
||||
var span = document.createElement('span');
|
||||
span.className = className;
|
||||
span.appendChild(node);
|
||||
div.appendChild(span);
|
||||
// No point in rendering many divs as it would make the browser
|
||||
// unusable even after the divs are rendered.
|
||||
if (textDivsLength > MAX_TEXT_DIVS_TO_RENDER) {
|
||||
return;
|
||||
}
|
||||
div.appendChild(node);
|
||||
}
|
||||
|
||||
var i0 = selectedMatchIdx, i1 = i0 + 1;
|
||||
if (highlightAll) {
|
||||
i0 = 0;
|
||||
i1 = matches.length;
|
||||
} else if (!isSelectedPage) {
|
||||
// Not highlighting all and this isn't the selected page, so do nothing.
|
||||
return;
|
||||
}
|
||||
|
||||
for (var i = i0; i < i1; i++) {
|
||||
var match = matches[i];
|
||||
var begin = match.begin;
|
||||
var end = match.end;
|
||||
var isSelected = (isSelectedPage && i === selectedMatchIdx);
|
||||
var highlightSuffix = (isSelected ? ' selected' : '');
|
||||
|
||||
if (isSelected && !this.isViewerInPresentationMode) {
|
||||
scrollIntoView(textDivs[begin.divIdx],
|
||||
{ top: FIND_SCROLL_OFFSET_TOP,
|
||||
left: FIND_SCROLL_OFFSET_LEFT });
|
||||
}
|
||||
|
||||
// Match inside new div.
|
||||
if (!prevEnd || begin.divIdx !== prevEnd.divIdx) {
|
||||
// If there was a previous div, then add the text at the end.
|
||||
if (prevEnd !== null) {
|
||||
appendTextToDiv(prevEnd.divIdx, prevEnd.offset, infinity.offset);
|
||||
for (var i = 0; i < textDivsLength; i++) {
|
||||
var textDiv = textDivs[i];
|
||||
if (textDiv.dataset.isWhitespace !== undefined) {
|
||||
continue;
|
||||
}
|
||||
// Clear the divs and set the content until the starting point.
|
||||
beginText(begin);
|
||||
} else {
|
||||
appendTextToDiv(prevEnd.divIdx, prevEnd.offset, begin.offset);
|
||||
}
|
||||
|
||||
if (begin.divIdx === end.divIdx) {
|
||||
appendTextToDiv(begin.divIdx, begin.offset, end.offset,
|
||||
'highlight' + highlightSuffix);
|
||||
} else {
|
||||
appendTextToDiv(begin.divIdx, begin.offset, infinity.offset,
|
||||
'highlight begin' + highlightSuffix);
|
||||
for (var n0 = begin.divIdx + 1, n1 = end.divIdx; n0 < n1; n0++) {
|
||||
textDivs[n0].className = 'highlight middle' + highlightSuffix;
|
||||
ctx.font = textDiv.style.fontSize + ' ' + textDiv.style.fontFamily;
|
||||
var width = ctx.measureText(textDiv.textContent).width;
|
||||
if (width > 0) {
|
||||
textLayerFrag.appendChild(textDiv);
|
||||
var textScale = textDiv.dataset.canvasWidth / width;
|
||||
var rotation = textDiv.dataset.angle;
|
||||
var transform = 'scale(' + textScale + ', 1)';
|
||||
transform = 'rotate(' + rotation + 'deg) ' + transform;
|
||||
CustomStyle.setProp('transform' , textDiv, transform);
|
||||
CustomStyle.setProp('transformOrigin' , textDiv, '0% 0%');
|
||||
}
|
||||
beginText(end, 'highlight end' + highlightSuffix);
|
||||
}
|
||||
prevEnd = end;
|
||||
}
|
||||
|
||||
if (prevEnd) {
|
||||
appendTextToDiv(prevEnd.divIdx, prevEnd.offset, infinity.offset);
|
||||
this.textLayerDiv.appendChild(textLayerFrag);
|
||||
this.renderingDone = true;
|
||||
this.updateMatches();
|
||||
},
|
||||
|
||||
setupRenderLayoutTimer:
|
||||
function TextLayerBuilder_setupRenderLayoutTimer() {
|
||||
// Schedule renderLayout() if the user has been scrolling,
|
||||
// otherwise run it right away.
|
||||
var self = this;
|
||||
var lastScroll = (this.lastScrollSource === null ?
|
||||
0 : this.lastScrollSource.lastScroll);
|
||||
|
||||
if (Date.now() - lastScroll > RENDER_DELAY) { // Render right away
|
||||
this.renderLayer();
|
||||
} else { // Schedule
|
||||
if (this.renderTimer) {
|
||||
clearTimeout(this.renderTimer);
|
||||
}
|
||||
this.renderTimer = setTimeout(function() {
|
||||
self.setupRenderLayoutTimer();
|
||||
}, RENDER_DELAY);
|
||||
}
|
||||
},
|
||||
|
||||
appendText: function TextLayerBuilder_appendText(geom, styles) {
|
||||
var style = styles[geom.fontName];
|
||||
var textDiv = document.createElement('div');
|
||||
this.textDivs.push(textDiv);
|
||||
if (!/\S/.test(geom.str)) {
|
||||
textDiv.dataset.isWhitespace = true;
|
||||
return;
|
||||
}
|
||||
var tx = PDFJS.Util.transform(this.viewport.transform, geom.transform);
|
||||
var angle = Math.atan2(tx[1], tx[0]);
|
||||
if (style.vertical) {
|
||||
angle += Math.PI / 2;
|
||||
}
|
||||
var fontHeight = Math.sqrt((tx[2] * tx[2]) + (tx[3] * tx[3]));
|
||||
var fontAscent = (style.ascent ? style.ascent * fontHeight :
|
||||
(style.descent ? (1 + style.descent) * fontHeight : fontHeight));
|
||||
|
||||
textDiv.style.position = 'absolute';
|
||||
textDiv.style.left = (tx[4] + (fontAscent * Math.sin(angle))) + 'px';
|
||||
textDiv.style.top = (tx[5] - (fontAscent * Math.cos(angle))) + 'px';
|
||||
textDiv.style.fontSize = fontHeight + 'px';
|
||||
textDiv.style.fontFamily = style.fontFamily;
|
||||
|
||||
textDiv.textContent = geom.str;
|
||||
textDiv.dataset.fontName = geom.fontName;
|
||||
textDiv.dataset.angle = angle * (180 / Math.PI);
|
||||
if (style.vertical) {
|
||||
textDiv.dataset.canvasWidth = geom.height * this.viewport.scale;
|
||||
} else {
|
||||
textDiv.dataset.canvasWidth = geom.width * this.viewport.scale;
|
||||
}
|
||||
},
|
||||
|
||||
setTextContent: function TextLayerBuilder_setTextContent(textContent) {
|
||||
this.textContent = textContent;
|
||||
|
||||
var textItems = textContent.items;
|
||||
for (var i = 0, len = textItems.length; i < len; i++) {
|
||||
this.appendText(textItems[i], textContent.styles);
|
||||
}
|
||||
this.divContentDone = true;
|
||||
this.setupRenderLayoutTimer();
|
||||
},
|
||||
|
||||
convertMatches: function TextLayerBuilder_convertMatches(matches) {
|
||||
var i = 0;
|
||||
var iIndex = 0;
|
||||
var bidiTexts = this.textContent.items;
|
||||
var end = bidiTexts.length - 1;
|
||||
var queryLen = (PDFFindController === null ?
|
||||
0 : PDFFindController.state.query.length);
|
||||
var ret = [];
|
||||
|
||||
for (var m = 0, len = matches.length; m < len; m++) {
|
||||
// Calculate the start position.
|
||||
var matchIdx = matches[m];
|
||||
|
||||
// Loop over the divIdxs.
|
||||
while (i !== end && matchIdx >= (iIndex + bidiTexts[i].str.length)) {
|
||||
iIndex += bidiTexts[i].str.length;
|
||||
i++;
|
||||
}
|
||||
|
||||
if (i === bidiTexts.length) {
|
||||
console.error('Could not find a matching mapping');
|
||||
}
|
||||
|
||||
var match = {
|
||||
begin: {
|
||||
divIdx: i,
|
||||
offset: matchIdx - iIndex
|
||||
}
|
||||
};
|
||||
|
||||
// Calculate the end position.
|
||||
matchIdx += queryLen;
|
||||
|
||||
// Somewhat the same array as above, but use > instead of >= to get
|
||||
// the end position right.
|
||||
while (i !== end && matchIdx > (iIndex + bidiTexts[i].str.length)) {
|
||||
iIndex += bidiTexts[i].str.length;
|
||||
i++;
|
||||
}
|
||||
|
||||
match.end = {
|
||||
divIdx: i,
|
||||
offset: matchIdx - iIndex
|
||||
};
|
||||
ret.push(match);
|
||||
}
|
||||
|
||||
return ret;
|
||||
},
|
||||
|
||||
renderMatches: function TextLayerBuilder_renderMatches(matches) {
|
||||
// Early exit if there is nothing to render.
|
||||
if (matches.length === 0) {
|
||||
return;
|
||||
}
|
||||
|
||||
var bidiTexts = this.textContent.items;
|
||||
var textDivs = this.textDivs;
|
||||
var prevEnd = null;
|
||||
var isSelectedPage = (PDFFindController === null ?
|
||||
false : (this.pageIdx === PDFFindController.selected.pageIdx));
|
||||
var selectedMatchIdx = (PDFFindController === null ?
|
||||
-1 : PDFFindController.selected.matchIdx);
|
||||
var highlightAll = (PDFFindController === null ?
|
||||
false : PDFFindController.state.highlightAll);
|
||||
var infinity = {
|
||||
divIdx: -1,
|
||||
offset: undefined
|
||||
};
|
||||
|
||||
function beginText(begin, className) {
|
||||
var divIdx = begin.divIdx;
|
||||
textDivs[divIdx].textContent = '';
|
||||
appendTextToDiv(divIdx, 0, begin.offset, className);
|
||||
}
|
||||
|
||||
function appendTextToDiv(divIdx, fromOffset, toOffset, className) {
|
||||
var div = textDivs[divIdx];
|
||||
var content = bidiTexts[divIdx].str.substring(fromOffset, toOffset);
|
||||
var node = document.createTextNode(content);
|
||||
if (className) {
|
||||
var span = document.createElement('span');
|
||||
span.className = className;
|
||||
span.appendChild(node);
|
||||
div.appendChild(span);
|
||||
return;
|
||||
}
|
||||
div.appendChild(node);
|
||||
}
|
||||
|
||||
var i0 = selectedMatchIdx, i1 = i0 + 1;
|
||||
if (highlightAll) {
|
||||
i0 = 0;
|
||||
i1 = matches.length;
|
||||
} else if (!isSelectedPage) {
|
||||
// Not highlighting all and this isn't the selected page, so do nothing.
|
||||
return;
|
||||
}
|
||||
|
||||
for (var i = i0; i < i1; i++) {
|
||||
var match = matches[i];
|
||||
var begin = match.begin;
|
||||
var end = match.end;
|
||||
var isSelected = (isSelectedPage && i === selectedMatchIdx);
|
||||
var highlightSuffix = (isSelected ? ' selected' : '');
|
||||
|
||||
if (isSelected && !this.isViewerInPresentationMode) {
|
||||
scrollIntoView(textDivs[begin.divIdx],
|
||||
{ top: FIND_SCROLL_OFFSET_TOP,
|
||||
left: FIND_SCROLL_OFFSET_LEFT });
|
||||
}
|
||||
|
||||
// Match inside new div.
|
||||
if (!prevEnd || begin.divIdx !== prevEnd.divIdx) {
|
||||
// If there was a previous div, then add the text at the end.
|
||||
if (prevEnd !== null) {
|
||||
appendTextToDiv(prevEnd.divIdx, prevEnd.offset, infinity.offset);
|
||||
}
|
||||
// Clear the divs and set the content until the starting point.
|
||||
beginText(begin);
|
||||
} else {
|
||||
appendTextToDiv(prevEnd.divIdx, prevEnd.offset, begin.offset);
|
||||
}
|
||||
|
||||
if (begin.divIdx === end.divIdx) {
|
||||
appendTextToDiv(begin.divIdx, begin.offset, end.offset,
|
||||
'highlight' + highlightSuffix);
|
||||
} else {
|
||||
appendTextToDiv(begin.divIdx, begin.offset, infinity.offset,
|
||||
'highlight begin' + highlightSuffix);
|
||||
for (var n0 = begin.divIdx + 1, n1 = end.divIdx; n0 < n1; n0++) {
|
||||
textDivs[n0].className = 'highlight middle' + highlightSuffix;
|
||||
}
|
||||
beginText(end, 'highlight end' + highlightSuffix);
|
||||
}
|
||||
prevEnd = end;
|
||||
}
|
||||
|
||||
if (prevEnd) {
|
||||
appendTextToDiv(prevEnd.divIdx, prevEnd.offset, infinity.offset);
|
||||
}
|
||||
},
|
||||
|
||||
updateMatches: function TextLayerBuilder_updateMatches() {
|
||||
// Only show matches when all rendering is done.
|
||||
if (!this.renderingDone) {
|
||||
return;
|
||||
}
|
||||
|
||||
// Clear all matches.
|
||||
var matches = this.matches;
|
||||
var textDivs = this.textDivs;
|
||||
var bidiTexts = this.textContent.items;
|
||||
var clearedUntilDivIdx = -1;
|
||||
|
||||
// Clear all current matches.
|
||||
for (var i = 0, len = matches.length; i < len; i++) {
|
||||
var match = matches[i];
|
||||
var begin = Math.max(clearedUntilDivIdx, match.begin.divIdx);
|
||||
for (var n = begin, end = match.end.divIdx; n <= end; n++) {
|
||||
var div = textDivs[n];
|
||||
div.textContent = bidiTexts[n].str;
|
||||
div.className = '';
|
||||
}
|
||||
clearedUntilDivIdx = match.end.divIdx + 1;
|
||||
}
|
||||
|
||||
if (PDFFindController === null || !PDFFindController.active) {
|
||||
return;
|
||||
}
|
||||
|
||||
// Convert the matches on the page controller into the match format
|
||||
// used for the textLayer.
|
||||
this.matches = this.convertMatches(PDFFindController === null ?
|
||||
[] : (PDFFindController.pageMatches[this.pageIdx] || []));
|
||||
this.renderMatches(this.matches);
|
||||
}
|
||||
};
|
||||
|
||||
this.updateMatches = function textLayerBuilder_updateMatches() {
|
||||
// Only show matches when all rendering is done.
|
||||
if (!this.renderingDone) {
|
||||
return;
|
||||
}
|
||||
|
||||
// Clear all matches.
|
||||
var matches = this.matches;
|
||||
var textDivs = this.textDivs;
|
||||
var bidiTexts = this.textContent.items;
|
||||
var clearedUntilDivIdx = -1;
|
||||
|
||||
// Clear all current matches.
|
||||
for (var i = 0, len = matches.length; i < len; i++) {
|
||||
var match = matches[i];
|
||||
var begin = Math.max(clearedUntilDivIdx, match.begin.divIdx);
|
||||
for (var n = begin, end = match.end.divIdx; n <= end; n++) {
|
||||
var div = textDivs[n];
|
||||
div.textContent = bidiTexts[n].str;
|
||||
div.className = '';
|
||||
}
|
||||
clearedUntilDivIdx = match.end.divIdx + 1;
|
||||
}
|
||||
|
||||
if (PDFFindController === null || !PDFFindController.active) {
|
||||
return;
|
||||
}
|
||||
|
||||
// Convert the matches on the page controller into the match format
|
||||
// used for the textLayer.
|
||||
this.matches = this.convertMatches(PDFFindController === null ?
|
||||
[] : (PDFFindController.pageMatches[this.pageIdx] || []));
|
||||
this.renderMatches(this.matches);
|
||||
};
|
||||
};
|
||||
return TextLayerBuilder;
|
||||
})();
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user