yetangitu/pdf.js
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Caching inlined mask images

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This commit is contained in:
Yury Delendik 2014-02-24 09:59:02 -06:00
parent f48f57e30a
commit 257898b359
4 changed files with 173 additions and 36 deletions
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61
src/display/canvas.js
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@ -1924,6 +1924,39 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
this.paintInlineImageXObject(maskCanvas.canvas);
},
paintImageMaskXObjectRepeat:
function CanvasGraphics_paintImageMaskXObjectRepeat(imgData, scaleX,
scaleY, positions) {
var width = imgData.width;
var height = imgData.height;
var ctx = this.ctx;
var maskCanvas = CachedCanvases.getCanvas('maskCanvas', width, height);
var maskCtx = maskCanvas.context;
maskCtx.save();
putBinaryImageMask(maskCtx, imgData);
maskCtx.globalCompositeOperation = 'source-in';
var fillColor = this.current.fillColor;
maskCtx.fillStyle = (fillColor && fillColor.hasOwnProperty('type') &&
fillColor.type === 'Pattern') ?
fillColor.getPattern(maskCtx, this) : fillColor;
maskCtx.fillRect(0, 0, width, height);
maskCtx.restore();
for (var i = 0, ii = positions.length; i < ii; i += 2) {
ctx.save();
ctx.transform(scaleX, 0, 0, scaleY, positions[i], positions[i + 1]);
ctx.scale(1, -1);
ctx.drawImage(maskCanvas.canvas, 0, 0, width, height,
0, -1, 1, 1);
ctx.restore();
}
},
paintImageMaskXObjectGroup:
function CanvasGraphics_paintImageMaskXObjectGroup(images) {
var ctx = this.ctx;
@ -1966,22 +1999,22 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
this.paintInlineImageXObject(imgData);
},
paintImageMaskXObjectRepeat:
function CanvasGraphics_paintImageMaskXObjectRepeat(objId, scaleX, scaleY,
paintImageXObjectRepeat:
function CanvasGraphics_paintImageXObjectRepeat(objId, scaleX, scaleY,
positions) {
var imgData = this.objs.get(objId);
if (!imgData) {
error('Dependent image isn\'t ready yet');
}
var imgData = this.objs.get(objId);
if (!imgData) {
error('Dependent image isn\'t ready yet');
}
var width = imgData.width;
var height = imgData.height;
var map = [];
for (var i = 0, ii = positions.length; i < ii; i += 2) {
map.push({transform: [scaleX, 0, 0, scaleY, positions[i],
positions[i + 1]], x: 0, y: 0, w: width, h: height});
}
this.paintInlineImageXObjectGroup(imgData, map);
var width = imgData.width;
var height = imgData.height;
var map = [];
for (var i = 0, ii = positions.length; i < ii; i += 2) {
map.push({transform: [scaleX, 0, 0, scaleY, positions[i],
positions[i + 1]], x: 0, y: 0, w: width, h: height});
}
this.paintInlineImageXObjectGroup(imgData, map);
},
paintInlineImageXObject: