yetangitu/pdf.js
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Merge pull request #6551 from yurydelendik/subaa

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[api-minor] Enables subpixel anti-aliasing for most of the content.
This commit is contained in:
Yury Delendik 2015-11-17 19:45:32 -06:00
commit 194994a289
7 changed files with 111 additions and 55 deletions
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12
src/display/pattern_helper.js
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@ -147,7 +147,7 @@ var createMeshCanvas = (function createMeshCanvasClosure() {
}
function createMeshCanvas(bounds, combinesScale, coords, colors, figures,
backgroundColor) {
backgroundColor, cachedCanvases) {
// we will increase scale on some weird factor to let antialiasing take
// care of "rough" edges
var EXPECTED_SCALE = 1.1;
@ -181,11 +181,11 @@ var createMeshCanvas = (function createMeshCanvasClosure() {
figures, context);
// https://bugzilla.mozilla.org/show_bug.cgi?id=972126
tmpCanvas = CachedCanvases.getCanvas('mesh', width, height, false);
tmpCanvas = cachedCanvases.getCanvas('mesh', width, height, false);
tmpCanvas.context.drawImage(canvas, 0, 0);
canvas = tmpCanvas.canvas;
} else {
tmpCanvas = CachedCanvases.getCanvas('mesh', width, height, false);
tmpCanvas = cachedCanvases.getCanvas('mesh', width, height, false);
var tmpCtx = tmpCanvas.context;
var data = tmpCtx.createImageData(width, height);
@ -241,7 +241,8 @@ ShadingIRs.Mesh = {
// Rasterizing on the main thread since sending/queue large canvases
// might cause OOM.
var temporaryPatternCanvas = createMeshCanvas(bounds, scale, coords,
colors, figures, shadingFill ? null : background);
colors, figures, shadingFill ? null : background,
owner.cachedCanvases);
if (!shadingFill) {
ctx.setTransform.apply(ctx, owner.baseTransform);
@ -344,7 +345,8 @@ var TilingPattern = (function TilingPatternClosure() {
height = Math.min(Math.ceil(Math.abs(height * combinedScale[1])),
MAX_PATTERN_SIZE);
var tmpCanvas = CachedCanvases.getCanvas('pattern', width, height, true);
var tmpCanvas = owner.cachedCanvases.getCanvas('pattern',
width, height, true);
var tmpCtx = tmpCanvas.context;
var graphics = new CanvasGraphics(tmpCtx, commonObjs, objs);
graphics.groupLevel = owner.groupLevel;