mirrors/pdf.js
1
0
Fork 0
mirror of https://github.com/mozilla/pdf.js.git synced 2025-04-22 16:18:08 +02:00
Code Activity

Apply bounding box before using shading patterns.

Browse source 
Fixes #8092
This commit is contained in:
Brendan Dahl 2019-05-23 17:45:25 -07:00
parent 1421b2f205
commit 6fab0a0dac
5 changed files with 191 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

15
src/core/pattern.js
View file

@ -96,6 +96,12 @@ Shadings.RadialAxial = (function RadialAxialClosure() {
var cs = dict.get('ColorSpace', 'CS');
cs = ColorSpace.parse(cs, xref, res, pdfFunctionFactory);
this.cs = cs;
const bbox = dict.getArray('BBox');
if (Array.isArray(bbox) && bbox.length === 4) {
this.bbox = Util.normalizeRect(bbox);
} else {
this.bbox = null;
}
var t0 = 0.0, t1 = 1.0;
if (dict.has('Domain')) {
@ -213,7 +219,7 @@ Shadings.RadialAxial = (function RadialAxialClosure() {
}
}
return ['RadialAxial', type, this.colorStops, p0, p1, r0, r1];
return ['RadialAxial', type, this.bbox, this.colorStops, p0, p1, r0, r1];
},
};
@ -719,7 +725,12 @@ Shadings.Mesh = (function MeshClosure() {
this.matrix = matrix;
this.shadingType = dict.get('ShadingType');
this.type = 'Pattern';
this.bbox = dict.getArray('BBox');
const bbox = dict.getArray('BBox');
if (Array.isArray(bbox) && bbox.length === 4) {
this.bbox = Util.normalizeRect(bbox);
} else {
this.bbox = null;
}
var cs = dict.get('ColorSpace', 'CS');
cs = ColorSpace.parse(cs, xref, res, pdfFunctionFactory);
this.cs = cs;

26
src/display/pattern_helper.js
View file

@ -17,17 +17,30 @@ import { FormatError, info, Util } from '../shared/util';
var ShadingIRs = {};
function applyBoundingBox(ctx, bbox) {
if (!bbox || typeof Path2D === 'undefined') {
return;
}
const width = bbox[2] - bbox[0];
const height = bbox[3] - bbox[1];
const region = new Path2D();
region.rect(bbox[0], bbox[1], width, height);
ctx.clip(region);
}
ShadingIRs.RadialAxial = {
fromIR: function RadialAxial_fromIR(raw) {
var type = raw[1];
var colorStops = raw[2];
var p0 = raw[3];
var p1 = raw[4];
var r0 = raw[5];
var r1 = raw[6];
var bbox = raw[2];
var colorStops = raw[3];
var p0 = raw[4];
var p1 = raw[5];
var r0 = raw[6];
var r1 = raw[7];
return {
type: 'Pattern',
getPattern: function RadialAxial_getPattern(ctx) {
applyBoundingBox(ctx, bbox);
var grad;
if (type === 'axial') {
grad = ctx.createLinearGradient(p0[0], p0[1], p1[0], p1[1]);
@ -233,11 +246,12 @@ ShadingIRs.Mesh = {
var figures = raw[4];
var bounds = raw[5];
var matrix = raw[6];
// var bbox = raw[7];
var bbox = raw[7];
var background = raw[8];
return {
type: 'Pattern',
getPattern: function Mesh_getPattern(ctx, owner, shadingFill) {
applyBoundingBox(ctx, bbox);
var scale;
if (shadingFill) {
scale = Util.singularValueDecompose2dScale(ctx.mozCurrentTransform);