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Merge branch 'master' of github.com:openseadragon/openseadragon

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This commit is contained in:
Ian Gilman 2024-04-29 10:40:40 -07:00
commit 441ea71f40
1 changed files with 8 additions and 3 deletions
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11
src/canvasdrawer.js
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@ -80,8 +80,6 @@ class CanvasDrawer extends OpenSeadragon.DrawerBase{
// Canvas default is "true", so this will only be changed if user specifies "false" in the options or via setImageSmoothinEnabled. // Canvas default is "true", so this will only be changed if user specifies "false" in the options or via setImageSmoothinEnabled.
this._imageSmoothingEnabled = true; this._imageSmoothingEnabled = true;
this._viewportFlipped = false;
// Since the tile-drawn and tile-drawing events are fired by this drawer, make sure handlers can be added for them // Since the tile-drawn and tile-drawing events are fired by this drawer, make sure handlers can be added for them
this.viewer.allowEventHandler("tile-drawn"); this.viewer.allowEventHandler("tile-drawn");
this.viewer.allowEventHandler("tile-drawing"); this.viewer.allowEventHandler("tile-drawing");
@ -118,7 +116,6 @@ class CanvasDrawer extends OpenSeadragon.DrawerBase{
this._prepareNewFrame(); // prepare to draw a new frame this._prepareNewFrame(); // prepare to draw a new frame
if(this.viewer.viewport.getFlip() !== this._viewportFlipped){ if(this.viewer.viewport.getFlip() !== this._viewportFlipped){
this._flip(); this._flip();
this._viewportFlipped = !this._viewportFlipped;
} }
for(const tiledImage of tiledImages){ for(const tiledImage of tiledImages){
if (tiledImage.opacity !== 0) { if (tiledImage.opacity !== 0) {
@ -189,6 +186,14 @@ class CanvasDrawer extends OpenSeadragon.DrawerBase{
context.restore(); context.restore();
} }
/**
* Test whether the current context is flipped or not
* @private
*/
get _viewportFlipped(){
return this.context.getTransform().a < 0;
}
/** /**
* Fires the tile-drawing event. * Fires the tile-drawing event.
* @private * @private