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Apply bounding box before using shading patterns.

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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
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26
src/display/pattern_helper.js
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@ -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);