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Apply HCM filters on annotations which have their own canvas (bug 1830850)

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This commit is contained in:
Calixte Denizet 2023-05-02 16:37:49 +02:00
parent 797f8d3dca
commit c07149a44f
3 changed files with 29 additions and 7 deletions
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19
src/display/canvas.js
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@ -947,7 +947,8 @@ class CanvasGraphics {
canvasFactory,
filterFactory,
{ optionalContentConfig, markedContentStack = null },
annotationCanvasMap
annotationCanvasMap,
pageColors
) {
this.ctx = canvasCtx;
this.current = new CanvasExtraState(
@ -983,6 +984,7 @@ class CanvasGraphics {
this.viewportScale = 1;
this.outputScaleX = 1;
this.outputScaleY = 1;
this.pageColors = pageColors;
this._cachedScaleForStroking = null;
this._cachedGetSinglePixelWidth = null;
@ -1135,7 +1137,7 @@ class CanvasGraphics {
}
}
endDrawing(pageColors = null) {
endDrawing() {
this.#restoreInitialState();
this.cachedCanvases.clear();
@ -1153,11 +1155,14 @@ class CanvasGraphics {
cache.clear();
}
this._cachedBitmapsMap.clear();
this.#drawFilter();
}
if (pageColors) {
#drawFilter() {
if (this.pageColors) {
const hcmFilterId = this.filterFactory.addHCMFilter(
pageColors.foreground,
pageColors.background
this.pageColors.foreground,
this.pageColors.background
);
if (hcmFilterId !== "none") {
const savedFilter = this.ctx.filter;
@ -2712,6 +2717,7 @@ class CanvasGraphics {
this.annotationCanvasMap.set(id, canvas);
this.annotationCanvas.savedCtx = this.ctx;
this.ctx = context;
this.ctx.save();
this.ctx.setTransform(scaleX, 0, 0, -scaleY, 0, height * scaleY);
resetCtxToDefault(this.ctx);
@ -2735,6 +2741,9 @@ class CanvasGraphics {
endAnnotation() {
if (this.annotationCanvas) {
this.ctx.restore();
this.#drawFilter();
this.ctx = this.annotationCanvas.savedCtx;
delete this.annotationCanvas.savedCtx;
delete this.annotationCanvas;