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Paint patterns relative to content base transformation.

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This commit is contained in:
Brendan Dahl 2013-07-22 14:52:44 -07:00
parent c682c25bcf
commit 2aecbe874e
4 changed files with 22 additions and 5 deletions
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11
src/canvas.js
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@ -407,6 +407,10 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
this.imageLayer = imageLayer;
this.groupStack = [];
this.processingType3 = null;
// Patterns are painted relative to the initial page/form transform, see pdf
// spec 8.7.2 NOTE 1.
this.baseTransform = null;
this.baseTransformStack = [];
if (canvasCtx) {
addContextCurrentTransform(canvasCtx);
}
@ -509,6 +513,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
}
var transform = viewport.transform;
this.baseTransform = transform.slice();
this.ctx.save();
this.ctx.transform.apply(this.ctx, transform);
@ -1318,7 +1323,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
color = base.getRgb(args, 0);
}
var pattern = new TilingPattern(IR, color, this.ctx, this.objs,
this.commonObjs);
this.commonObjs, this.baseTransform);
} else if (IR[0] == 'RadialAxial' || IR[0] == 'Dummy') {
var pattern = Pattern.shadingFromIR(IR);
} else {
@ -1453,10 +1458,13 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
bbox) {
this.save();
this.current.paintFormXObjectDepth++;
this.baseTransformStack.push(this.baseTransform);
if (matrix && isArray(matrix) && 6 == matrix.length)
this.transform.apply(this, matrix);
this.baseTransform = this.ctx.mozCurrentTransform;
if (bbox && isArray(bbox) && 4 == bbox.length) {
var width = bbox[2] - bbox[0];
var height = bbox[3] - bbox[1];
@ -1473,6 +1481,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
// some pdf don't close all restores inside object
// closing those for them
} while (this.current.paintFormXObjectDepth >= depth);
this.baseTransform = this.baseTransformStack.pop();
},
beginGroup: function CanvasGraphics_beginGroup(group) {