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-rw-r--r--gfx/layers/composite/CanvasLayerComposite.cpp6
-rw-r--r--gfx/layers/composite/ImageLayerComposite.cpp9
-rw-r--r--gfx/layers/composite/PaintedLayerComposite.cpp9
3 files changed, 19 insertions, 5 deletions
diff --git a/gfx/layers/composite/CanvasLayerComposite.cpp b/gfx/layers/composite/CanvasLayerComposite.cpp
index 3c8299e05..86f25b1ee 100644
--- a/gfx/layers/composite/CanvasLayerComposite.cpp
+++ b/gfx/layers/composite/CanvasLayerComposite.cpp
@@ -43,9 +43,13 @@ bool
CanvasLayerComposite::SetCompositableHost(CompositableHost* aHost)
{
switch (aHost->GetType()) {
- case CompositableType::IMAGE:
+ case CompositableType::IMAGE: {
+ if (mCompositableHost && aHost != mCompositableHost) {
+ mCompositableHost->Detach(this);
+ }
mCompositableHost = aHost;
return true;
+ }
default:
return false;
}
diff --git a/gfx/layers/composite/ImageLayerComposite.cpp b/gfx/layers/composite/ImageLayerComposite.cpp
index bac9f3790..6867aaa22 100644
--- a/gfx/layers/composite/ImageLayerComposite.cpp
+++ b/gfx/layers/composite/ImageLayerComposite.cpp
@@ -50,9 +50,14 @@ bool
ImageLayerComposite::SetCompositableHost(CompositableHost* aHost)
{
switch (aHost->GetType()) {
- case CompositableType::IMAGE:
- mImageHost = static_cast<ImageHost*>(aHost);
+ case CompositableType::IMAGE: {
+ ImageHost* newImageHost = static_cast<ImageHost*>(aHost);
+ if (mImageHost && newImageHost != mImageHost) {
+ mImageHost->Detach(this);
+ }
+ mImageHost = newImageHost;
return true;
+ }
default:
return false;
}
diff --git a/gfx/layers/composite/PaintedLayerComposite.cpp b/gfx/layers/composite/PaintedLayerComposite.cpp
index b58f5d690..232cc4ef4 100644
--- a/gfx/layers/composite/PaintedLayerComposite.cpp
+++ b/gfx/layers/composite/PaintedLayerComposite.cpp
@@ -49,9 +49,14 @@ PaintedLayerComposite::SetCompositableHost(CompositableHost* aHost)
switch (aHost->GetType()) {
case CompositableType::CONTENT_TILED:
case CompositableType::CONTENT_SINGLE:
- case CompositableType::CONTENT_DOUBLE:
- mBuffer = static_cast<ContentHost*>(aHost);
+ case CompositableType::CONTENT_DOUBLE: {
+ ContentHost* newBuffer = static_cast<ContentHost*>(aHost);
+ if (mBuffer && newBuffer != mBuffer) {
+ mBuffer->Detach(this);
+ }
+ mBuffer = newBuffer;
return true;
+ }
default:
return false;
}