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Bug 523373: [Regression] _criticalRect is empty and throws in Rect.center() [r=froystig]

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This commit is contained in:
Benjamin Stover 2009-10-20 22:16:06 -04:00
parent a655e55c97
commit 32d5975f3a
1 changed files with 13 additions and 24 deletions
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29
mobile/chrome/content/TileManager.js.in
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@ -127,7 +127,7 @@ function TileManager(appendTile, removeTile, browserView, cacheSize) {
/* Rectangle within the viewport that is visible to the user. It is "critical"
* in the sense that it must be rendered as soon as it becomes dirty, and tiles
* within this rectangle should not be evicted for use elsewhere. */
this._criticalRect = null;
this._criticalRect = new Rect(0, 0, 0, 0);
/* timeout of the non-visible-tiles-crawler to cache renders from the browser */
this._idleTileCrawlerTimeout = 0;
@ -154,7 +154,7 @@ TileManager.prototype = {
tc.iBound = Math.ceil(viewportRect.right / kTileWidth);
tc.jBound = Math.ceil(viewportRect.bottom / kTileHeight);
if (!criticalRect || !criticalRect.equals(this._criticalRect)) {
if (criticalRect.isEmpty() || !criticalRect.equals(this._criticalRect)) {
this.beginCriticalMove(criticalRect);
this.endCriticalMove(criticalRect, !boundsSizeChanged);
}
@ -176,15 +176,13 @@ TileManager.prototype = {
BEGIN_FOREACH_IN_RECT(rect, tc, tile)
if (!criticalRect || !tile.boundRect.intersects(criticalRect))
if (!tile.boundRect.intersects(criticalRect))
this._removeTileSafe(tile);
else
criticalIsDirty = true;
let intersection = tile.boundRect.intersect(rects[i]);
if (intersection) {
tile.markDirty(intersection);
}
if (crawler)
crawler.enqueue(tile.i, tile.j);
@ -201,7 +199,7 @@ TileManager.prototype = {
//let start = Date.now();
if (cr) {
if (!cr.isEmpty()) {
let ctr = cr.center().map(Math.round);
if (!this._ctr.equals(ctr)) {
@ -238,7 +236,7 @@ TileManager.prototype = {
//let start = Date.now();
if (cr) {
if (!cr.isEmpty()) {
BEGIN_FOREACH_IN_RECT(cr, tc, tile)
tc.releaseTile(tile);
END_FOREACH_IN_RECT
@ -260,10 +258,7 @@ TileManager.prototype = {
//dump(" hold: " + (Date.now() - start) + "\n");
if (cr && destCriticalRect)
cr.copyFrom(destCriticalRect);
else
this._criticalRect = cr = destCriticalRect;
if (doCriticalPaint)
this.criticalRectPaint();
@ -295,7 +290,7 @@ TileManager.prototype = {
if (!skipRecenter) {
let cr = this._criticalRect;
if (cr) {
if (!cr.isEmpty()) {
let ctr = cr.center().map(Math.round);
this.recenterEvictionQueue(ctr);
}
@ -696,7 +691,7 @@ TileManager.Tile.prototype = {
this._dirtyTileCanvas = false;
/* keep a dirty rectangle (i.e. only part of the tile is dirty) */
this._dirtyTileCanvasRect = null;
this._dirtyTileCanvasRect = new Rect(0, 0, 0, 0);
},
get x() { return this.boundRect.left; },
@ -717,26 +712,20 @@ TileManager.Tile.prototype = {
*/
markDirty: function markDirty(dirtyRect) {
if (!dirtyRect) {
if (!this._dirtyTileCanvasRect)
this._dirtyTileCanvasRect = this.boundRect.clone();
else
this._dirtyTileCanvasRect.copyFrom(this.boundRect);
} else {
if (!this._dirtyTileCanvasRect)
this._dirtyTileCanvasRect = dirtyRect.intersect(this.boundRect).expandToIntegers();
else if (dirtyRect.intersects(this.boundRect))
this._dirtyTileCanvasRect.expandToContain(dirtyRect.intersect(this.boundRect)).expandToIntegers();
}
// XXX if, after the above, the dirty rectangle takes up a large enough
// portion of the boundRect, we should probably just mark the entire tile
// dirty and fastpath for future calls.
if (this._dirtyTileCanvasRect)
if (!this._dirtyTileCanvasRect.isEmpty())
this._dirtyTileCanvas = true;
},
unmarkDirty: function unmarkDirty() {
this._dirtyTileCanvasRect = null;
this._dirtyTileCanvasRect.setRect(0, 0, 0, 0);
this._dirtyTileCanvas = false;
},