wine/gecko
0
0
Fork 0
mirror of https://gitlab.winehq.org/wine/wine-gecko.git synced 2024-09-13 09:24:08 -07:00
Code Issues Packages Projects Releases Wiki Activity

Bug 588452 - Don't render to zoom snapshot canvas before prior render finishes [r=stechz]

Browse Source 
--HG--
extra : rebase_source : f4994456ae0bd2704aa8ae52f80810607a6c2bbd
This commit is contained in:
Matt Brubeck 2010-08-18 19:30:42 -07:00
parent 8d359fcdd9
commit dfbfe6f8d4
1 changed files with 13 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
mobile/chrome/content/AnimatedZoom.js
View File

@ -51,6 +51,10 @@ let Cu = Components.utils;
function AnimatedZoom(aBrowserView) {
this.bv = aBrowserView;
this.snapshot = AnimatedZoom.createCanvas();
if (this.snapshot.pending_render)
return;
// Render a snapshot of the viewport contents around the visible rect
let [w, h] = this.bv.getViewportDimensions();
let viewportRect = new Rect(0, 0, w, h);
@ -61,8 +65,6 @@ function AnimatedZoom(aBrowserView) {
// sanitize the snapshot rectangle to fit inside viewport
this.snapshotRect.translateInside(viewportRect).restrictTo(viewportRect).expandToIntegers();
this.snapshot = AnimatedZoom.createCanvas();
this.snapshotRect.width = Math.min(this.snapshotRect.width, this.snapshot.width);
this.snapshotRect.height = Math.min(this.snapshotRect.height, this.snapshot.height);
@ -74,6 +76,7 @@ function AnimatedZoom(aBrowserView) {
if (remote) {
this.canvasReady = false;
this.snapshot.addEventListener("MozAsyncCanvasRender", this, false);
this.snapshot.pending_render = true;
} else {
this.canvasReady = true;
this.startAnimation();
@ -82,8 +85,11 @@ function AnimatedZoom(aBrowserView) {
AnimatedZoom.prototype.handleEvent = function(aEvent) {
if (aEvent.type == "MozAsyncCanvasRender") {
this.snapshot.removeEventListener("MozAsyncCanvasRender", this, false);
if (aEvent.originalTarget == this.snapshot) {
let snapshot = aEvent.originalTarget;
snapshot.pending_render = false;
snapshot.removeEventListener("MozAsyncCanvasRender", this, false);
if (this.snapshot == snapshot) {
this.canvasReady = true;
this.startAnimation();
}
@ -150,6 +156,9 @@ AnimatedZoom.prototype.startAnimation = function()
AnimatedZoom.prototype.updateTo = function(nextRect) {
this.zoomRect = nextRect;
if (this.snapshot.pending_render)
return;
// prepare to draw to the zoom canvas
let canvasRect = new Rect(0, 0, Elements.viewBuffer.width, Elements.viewBuffer.height);
let ctx = Elements.viewBuffer.getContext("2d");