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Bug 510856. Additional scrolling tests.

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--HG--
extra : rebase_source : 053c6aae0cc3b458647b296ffb6ce885af2ef7a4
This commit is contained in:
Robert O'Callahan 2009-09-07 12:35:13 +12:00
parent 34e388be5c
commit 62794eef88
2 changed files with 35 additions and 1 deletions
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5
layout/base/tests/region_lib.js
View File

@ -99,6 +99,11 @@ Region.prototype.containsRegion = function Region_containsRegion(rgn) {
return true;
};
// Return a region which is the union of this region and another region
Region.prototype.unionRegion = function Region_unionRegion(rgn) {
return new Region(this._rects.concat(rgn._rects));
};
// Returns true if the region covers exactly the same area as region rgn
Region.prototype.equalsRegion = function Region_equalsRegion(rgn) {
return this.containsRegion(rgn) && rgn.containsRegion(this);

31
layout/base/tests/scrolling_helper.html
View File

@ -62,6 +62,14 @@ body > div {
<div style="height:300px; background:-moz-linear-gradient(top, bottom, from(red), to(black));"></div>
</div>
<div id="testScrollOutOfView">
<div style="height:10px; margin-bottom:210px; background:-moz-linear-gradient(top, bottom, from(rgba(0,0,0,0.7)), to(rgba(255,0,0,0.7)));"></div>
</div>
<div id="testScrollIntoView">
<div style="height:10px; margin-top:210px; background:-moz-linear-gradient(top, bottom, from(rgba(0,0,0,0.7)), to(rgba(255,0,0,0.7)));"></div>
</div>
<script>
var tests = document.querySelectorAll("body>div");
var currentTest = -1;
@ -124,6 +132,22 @@ function testBorder(blitRegion, paintRegion) {
"Should repaint area that was scrolled into view");
}
// Check that scrolling some content out of view updates the area that
// was displaying the content
function testScrollOutOfView(blitRegion, paintRegion) {
var all = blitRegion.unionRegion(paintRegion);
ok(all.containsRect([0,0,200,10]),
"Should update everything that was previously visible but scrolled out of view");
}
// Check that scrolling some content into view updates the area that
// is displaying the content
function testScrollIntoView(blitRegion, paintRegion) {
var all = blitRegion.unionRegion(paintRegion);
ok(all.containsRect([0,190,200,200]),
"Should update everything that was previously visible");
}
function clientRectToRect(cr)
{
return [cr.left, cr.top, cr.right, cr.bottom];
@ -156,7 +180,12 @@ function afterPaint(event) {
if (blitRegion.isEmpty() && paintRegion.isEmpty())
return;
window[tests[currentTest].id](blitRegion, paintRegion);
var testFunc = window[tests[currentTest].id];
if (!testFunc) {
ok(false, "Cannot find test function for " + tests[currentTest].id);
} else {
testFunc(blitRegion, paintRegion);
}
tests[currentTest].style.display = 'none';
nextTest();