本文整理汇总了C++中nsIntRect::Intersect方法的典型用法代码示例。如果您正苦于以下问题：C++ nsIntRect::Intersect方法的具体用法？C++ nsIntRect::Intersect怎么用？C++ nsIntRect::Intersect使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类nsIntRect的用法示例。
在下文中一共展示了nsIntRect::Intersect方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: rect
bool
AndroidGeckoSoftwareLayerClient::BeginDrawing(int aWidth, int aHeight, int aTileWidth, int aTileHeight, nsIntRect &aDirtyRect, const nsAString &aMetadata, bool aHasDirectTexture)
{
NS_ASSERTION(!isNull(), "BeginDrawing() called on null software layer client!");
JNIEnv *env = AndroidBridge::GetJNIEnv();
if (!env)
return false;
AndroidBridge::AutoLocalJNIFrame(env, 1);
jstring jMetadata = env->NewString(nsPromiseFlatString(aMetadata).get(), aMetadata.Length());
jobject rectObject = env->CallObjectMethod(wrapped_obj, jBeginDrawingMethod,
aWidth, aHeight, aTileWidth, aTileHeight,
jMetadata, aHasDirectTexture);
if (rectObject == nsnull)
return false;
AndroidRect rect(env, rectObject);
nsIntRect newDirtyRect = aDirtyRect.Intersect(nsIntRect(rect.Top(), rect.Left(),
rect.Width(), rect.Height()));
aDirtyRect.SetRect(newDirtyRect.x, newDirtyRect.y, newDirtyRect.width, newDirtyRect.height);
return true;
}示例2: memset
//******************************************************************************
void
FrameAnimator::ClearFrame(uint8_t* aFrameData, const nsIntRect& aFrameRect,
const nsIntRect& aRectToClear)
{
if (!aFrameData || aFrameRect.width <= 0 || aFrameRect.height <= 0 ||
aRectToClear.width <= 0 || aRectToClear.height <= 0) {
return;
}
nsIntRect toClear = aFrameRect.Intersect(aRectToClear);
if (toClear.IsEmpty()) {
return;
}
uint32_t bytesPerRow = aFrameRect.width * 4;
for (int row = toClear.y; row < toClear.y + toClear.height; ++row) {
memset(aFrameData + toClear.x * 4 + row * bytesPerRow, 0,
toClear.width * 4);
}
}示例3: offset
bool
BasicContainerLayer::ChildrenPartitionVisibleRegion(const nsIntRect& aInRect)
{
Matrix transform;
if (!GetEffectiveTransform().CanDraw2D(&transform) ||
ThebesMatrix(transform).HasNonIntegerTranslation())
return false;
nsIntPoint offset(int32_t(transform._31), int32_t(transform._32));
nsIntRect rect = aInRect.Intersect(GetEffectiveVisibleRegion().GetBounds() + offset);
nsIntRegion covered;
for (Layer* l = mFirstChild; l; l = l->GetNextSibling()) {
if (ToData(l)->IsHidden())
continue;
Matrix childTransform;
if (!l->GetEffectiveTransform().CanDraw2D(&childTransform) ||
ThebesMatrix(childTransform).HasNonIntegerTranslation() ||
l->GetEffectiveOpacity() != 1.0)
return false;
nsIntRegion childRegion = l->GetEffectiveVisibleRegion();
childRegion.MoveBy(int32_t(childTransform._31), int32_t(childTransform._32));
childRegion.And(childRegion, rect);
if (l->GetClipRect()) {
childRegion.And(childRegion, *l->GetClipRect() + offset);
}
nsIntRegion intersection;
intersection.And(covered, childRegion);
if (!intersection.IsEmpty())
return false;
covered.Or(covered, childRegion);
}
return covered.Contains(rect);
}