Commit 80992e26 authored by Markus Stange's avatar Markus Stange
Browse files

Bug 1592739 - Stop clearing the background behind vibrant -moz-appearance items. r=mattwoodrow 

Now that there is no Gecko-contributed background color in the window any more,
there's nothing that needs to be cleared away. This simplifies things.

Differential Revision: https://phabricator.services.mozilla.com/D51464

--HG--
extra : moz-landing-system : lando
parent 7bb6e93a

gfx/src/nsITheme.h

+0 −5
Original line number Diff line number Diff line
@@ -168,11 +168,6 @@ class nsITheme : public nsISupports { 
    return false;

  }



  virtual bool NeedToClearBackgroundBehindWidget(nsIFrame* aFrame,

                                                 StyleAppearance aWidgetType) {

    return false;

  }



  /**

   * ThemeGeometryType values are used for describing themed nsIFrames in

   * calls to nsIWidget::UpdateThemeGeometries. We don't simply pass the

layout/painting/nsDisplayItemTypesList.h

+0 −1
Original line number Diff line number Diff line
@@ -34,7 +34,6 @@ DECLARE_DISPLAY_ITEM_TYPE(CHECKED_CHECKBOX, 
                          TYPE_RENDERS_NO_IMAGES | TYPE_IS_CONTENTFUL)

DECLARE_DISPLAY_ITEM_TYPE(CHECKED_RADIOBUTTON,

                          TYPE_RENDERS_NO_IMAGES | TYPE_IS_CONTENTFUL)

DECLARE_DISPLAY_ITEM_TYPE(CLEAR_BACKGROUND, TYPE_RENDERS_NO_IMAGES)

DECLARE_DISPLAY_ITEM_TYPE(COLUMN_RULE, TYPE_RENDERS_NO_IMAGES)

DECLARE_DISPLAY_ITEM_TYPE(COMBOBOX_FOCUS, TYPE_RENDERS_NO_IMAGES)

DECLARE_DISPLAY_ITEM_TYPE(COMPOSITOR_HITTEST_INFO, TYPE_RENDERS_NO_IMAGES)

layout/painting/nsDisplayList.cpp

+1 −49
Original line number Diff line number Diff line
@@ -1508,7 +1508,7 @@ void nsDisplayListBuilder::SetGlassDisplayItem(nsDisplayItem* aItem) { 


bool nsDisplayListBuilder::NeedToForceTransparentSurfaceForItem(

    nsDisplayItem* aItem) {

  return aItem == mGlassDisplayItem || aItem->ClearsBackground();

  return aItem == mGlassDisplayItem;

}



AnimatedGeometryRoot* nsDisplayListBuilder::WrapAGRForFrame(
@@ -4311,12 +4311,6 @@ bool nsDisplayBackgroundImage::AppendBackgroundItemsToTop( 
  }



  if (isThemed) {

    nsITheme* theme = presContext->GetTheme();

    if (theme->NeedToClearBackgroundBehindWidget(

            aFrame, aFrame->StyleDisplay()->mAppearance) &&

        aBuilder->IsInChromeDocumentOrPopup() && !aBuilder->IsInTransform()) {

      bgItemList.AppendNewToTop<nsDisplayClearBackground>(aBuilder, aFrame);

    }

    if (aSecondaryReferenceFrame) {

      nsDisplayTableThemedBackground* bgItem =

          MakeDisplayItem<nsDisplayTableThemedBackground>(
@@ -5439,48 +5433,6 @@ void nsDisplayBackgroundColor::WriteDebugInfo(std::stringstream& aStream) { 
  aStream << " backgroundRect" << mBackgroundRect;

}



already_AddRefed<Layer> nsDisplayClearBackground::BuildLayer(

    nsDisplayListBuilder* aBuilder, LayerManager* aManager,

    const ContainerLayerParameters& aParameters) {

  RefPtr<ColorLayer> layer = static_cast<ColorLayer*>(

      aManager->GetLayerBuilder()->GetLeafLayerFor(aBuilder, this));

  if (!layer) {

    layer = aManager->CreateColorLayer();

    if (!layer) {

      return nullptr;

    }

  }

  layer->SetColor(Color());

  layer->SetMixBlendMode(gfx::CompositionOp::OP_SOURCE);



  bool snap;

  nsRect bounds = GetBounds(aBuilder, &snap);

  int32_t appUnitsPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();

  layer->SetBounds(bounds.ToNearestPixels(appUnitsPerDevPixel));  // XXX Do we

                                                                  // need to

                                                                  // respect the

                                                                  // parent

                                                                  // layer's

                                                                  // scale here?



  return layer.forget();

}



bool nsDisplayClearBackground::CreateWebRenderCommands(

    mozilla::wr::DisplayListBuilder& aBuilder,

    mozilla::wr::IpcResourceUpdateQueue& aResources,

    const StackingContextHelper& aSc,

    mozilla::layers::RenderRootStateManager* aManager,

    nsDisplayListBuilder* aDisplayListBuilder) {

  LayoutDeviceRect bounds = LayoutDeviceRect::FromAppUnits(

      nsRect(ToReferenceFrame(), mFrame->GetSize()),

      mFrame->PresContext()->AppUnitsPerDevPixel());



  aBuilder.PushClearRect(wr::ToLayoutRect(bounds));



  return true;

}



nsRect nsDisplayOutline::GetBounds(nsDisplayListBuilder* aBuilder,

                                   bool* aSnap) const {

  *aSnap = false;

layout/painting/nsDisplayList.h

+0 −45
Original line number Diff line number Diff line
@@ -2764,8 +2764,6 @@ class nsDisplayItem : public nsDisplayItemBase { 
    return false;

  }



  virtual bool ClearsBackground() const { return false; }



  /**

   * Returns true if all layers that can be active should be forced to be

   * active. Requires setting the pref layers.force-active=true.
@@ -5107,49 +5105,6 @@ class nsDisplayTableBackgroundColor : public nsDisplayBackgroundColor { 
  nsIFrame* mAncestorFrame;

};



class nsDisplayClearBackground : public nsPaintedDisplayItem {

 public:

  nsDisplayClearBackground(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame)

      : nsPaintedDisplayItem(aBuilder, aFrame) {}



  NS_DISPLAY_DECL_NAME("ClearBackground", TYPE_CLEAR_BACKGROUND)



  nsRect GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) const override {

    *aSnap = true;

    return nsRect(ToReferenceFrame(), Frame()->GetSize());

  }



  nsRegion GetOpaqueRegion(nsDisplayListBuilder* aBuilder,

                           bool* aSnap) const override {

    *aSnap = false;

    return GetBounds(aBuilder, aSnap);

  }



  mozilla::Maybe<nscolor> IsUniform(

      nsDisplayListBuilder* aBuilder) const override {

    return mozilla::Some(NS_RGBA(0, 0, 0, 0));

  }



  bool ClearsBackground() const override { return true; }



  LayerState GetLayerState(

      nsDisplayListBuilder* aBuilder, LayerManager* aManager,

      const ContainerLayerParameters& aParameters) override {

    return mozilla::LayerState::LAYER_ACTIVE_FORCE;

  }



  already_AddRefed<Layer> BuildLayer(

      nsDisplayListBuilder* aBuilder, LayerManager* aManager,

      const ContainerLayerParameters& aContainerParameters) override;



  bool CreateWebRenderCommands(

      mozilla::wr::DisplayListBuilder& aBuilder,

      mozilla::wr::IpcResourceUpdateQueue& aResources,

      const StackingContextHelper& aSc,

      mozilla::layers::RenderRootStateManager* aManager,

      nsDisplayListBuilder* aDisplayListBuilder) override;

};



/**

 * The standard display item to paint the outer CSS box-shadows of a frame.

 */

widget/cocoa/nsNativeThemeCocoa.h

+0 −2
Original line number Diff line number Diff line
@@ -419,8 +419,6 @@ class nsNativeThemeCocoa : private nsNativeTheme, public nsITheme { 
  bool ThemeDrawsFocusForWidget(StyleAppearance aAppearance) override;

  bool ThemeNeedsComboboxDropmarker() override;

  virtual bool WidgetAppearanceDependsOnWindowFocus(StyleAppearance aAppearance) override;

  virtual bool NeedToClearBackgroundBehindWidget(nsIFrame* aFrame,

                                                 StyleAppearance aAppearance) override;

  virtual ThemeGeometryType ThemeGeometryTypeForWidget(nsIFrame* aFrame,

                                                       StyleAppearance aAppearance) override;

  virtual Transparency GetWidgetTransparency(nsIFrame* aFrame,