Bug 1453953 - natively implement xul textboxes. r=mstange

layout/base/nsLayoutUtils.cpp

@@ -6143,7 +6143,7 @@ nsLayoutUtils::PaintTextShadow(const nsIFrame* aFrame,
       wrShadow.color = wr::ToColorF(ToDeviceColor(shadowColor));
 
       textDrawer->AppendShadow(wrShadow);
-      return;
+      continue;
     }
 
     gfxContext* shadowContext = contextBoxBlur.Init(shadowRect, 0, blurRadius,

layout/reftests/bugs/reftest.list

@@ -412,7 +412,7 @@ fuzzy-if(Android,0-2,0-18) == 315920-17.html 315920-17-ref.html
 == 320979-1.html 320979-1-ref.html
 != 321402-1.html about:blank
 != 321402-2.html about:blank
-fuzzy-if(webrender&&winWidget,35-35,1-1) == 321402-3.xul 321402-3-ref.xul
+== 321402-3.xul 321402-3-ref.xul
 == 321402-4.xul 321402-4-ref.xul
 == 321402-5.xul 321402-5-ref.xul
 == 321402-6.xul 321402-6-ref.xul
@@ -1002,7 +1002,7 @@ asserts(1) == 418574-2.html 418574-2-ref.html # bug 478135
 == 421069-ref.html 421069-ref2.html
 == 421203-1.xul 421203-1-ref.html
 == 421203-2.xul 421203-1-ref.html
-fuzzy-if(webrender&&winWidget,35-35,1-1) == 421203-3.xul 321402-3-ref.xul
+== 421203-3.xul 321402-3-ref.xul
 == 421203-4.xul 321402-4-ref.xul
 == 421203-5.xul 321402-5-ref.xul
 == 421203-6.xul 321402-6-ref.xul

layout/reftests/text-shadow/reftest.list

@@ -1,10 +1,10 @@
 == 723669.html 723669-ref.html
 
-fuzzy-if(webrender&&winWidget,1-1,7-7) fuzzy-if(webrender&&cocoaWidget,1-1,20-20) == basic.xul basic-ref.xul
-random-if(Android) fuzzy-if(webrender&&winWidget,1-1,6-6) fuzzy-if(webrender&&cocoaWidget,1-1,53-53) == basic-negcoord.xul basic-negcoord-ref.xul
+== basic.xul basic-ref.xul
+random-if(Android) == basic-negcoord.xul basic-negcoord-ref.xul
 != blur.xul blur-notref.xul
-fuzzy-if(webrender&&winWidget,1-1,6-6) fuzzy-if(webrender&&cocoaWidget,1-1,32-32) == color-inherit.xul color-inherit-ref.xul
-fuzzy-if(webrender&&winWidget,1-1,44-44) fuzzy-if(webrender&&cocoaWidget,2-2,176-176) == multiple-noblur.xul multiple-noblur-ref.xul
+== color-inherit.xul color-inherit-ref.xul
+== multiple-noblur.xul multiple-noblur-ref.xul
 == blur-opacity.html blur-opacity-ref.html
 
 == basic.html basic-ref.html

layout/xul/nsTextBoxFrame.cpp

@@ -35,6 +35,8 @@
 #include "nsLayoutUtils.h"
 #include "mozilla/Attributes.h"
 #include "nsUnicodeProperties.h"
+#include "mozilla/layers/WebRenderLayerManager.h"
+#include "TextDrawTarget.h"
 
 #ifdef ACCESSIBILITY
 #include "nsAccessibilityService.h"
@@ -308,6 +310,12 @@ public:
   void PaintTextToContext(gfxContext* aCtx,
                           nsPoint aOffset,
                           const nscolor* aColor);
+
+  virtual bool CreateWebRenderCommands(mozilla::wr::DisplayListBuilder& aBuilder,
+                                       mozilla::wr::IpcResourceUpdateQueue& aResources,
+                                       const StackingContextHelper& aSc,
+                                       mozilla::layers::WebRenderLayerManager* aManager,
+                                       nsDisplayListBuilder* aDisplayListBuilder) override;
 };
 
 static void
@@ -348,6 +356,36 @@ nsDisplayXULTextBox::PaintTextToContext(gfxContext* aCtx,
     PaintTitle(*aCtx, GetPaintRect(), ToReferenceFrame() + aOffset, aColor);
 }
 
+bool
+nsDisplayXULTextBox::CreateWebRenderCommands(mozilla::wr::DisplayListBuilder& aBuilder,
+                                             mozilla::wr::IpcResourceUpdateQueue& aResources,
+                                             const StackingContextHelper& aSc,
+                                             mozilla::layers::WebRenderLayerManager* aManager,
+                                             nsDisplayListBuilder* aDisplayListBuilder)
+{
+
+  bool snap = false;
+  auto bounds = GetBounds(aDisplayListBuilder, &snap);
+
+  if (bounds.IsEmpty()) {
+    return true;
+  }
+
+
+  auto appUnitsPerDevPixel = Frame()->PresContext()->AppUnitsPerDevPixel();
+  gfx::Point deviceOffset = LayoutDevicePoint::FromAppUnits(
+      bounds.TopLeft(), appUnitsPerDevPixel).ToUnknownPoint();
+
+  RefPtr<mozilla::layout::TextDrawTarget> textDrawer = 
+      new mozilla::layout::TextDrawTarget(aBuilder, aResources, aSc, aManager, this, bounds);
+  RefPtr<gfxContext> captureCtx = gfxContext::CreateOrNull(textDrawer, deviceOffset);
+
+  Paint(aDisplayListBuilder, captureCtx);
+  textDrawer->TerminateShadows();
+
+  return !textDrawer->HasUnsupportedFeatures();
+}
+
 nsRect
 nsDisplayXULTextBox::GetBounds(nsDisplayListBuilder* aBuilder,
                                bool* aSnap) const