Add m-esr52 at 52.6.0

1 files changed, 311 insertions, 0 deletions

diff --git a/layout/xul/nsGroupBoxFrame.cpp b/layout/xul/nsGroupBoxFrame.cpp
new file mode 100644
index 000000000..514287a24
--- /dev/null
+++ b/layout/xul/nsGroupBoxFrame.cpp
@@ -0,0 +1,311 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// YY need to pass isMultiple before create called
+
+#include "nsBoxFrame.h"
+
+#include "mozilla/gfx/2D.h"
+#include "nsCSSRendering.h"
+#include "nsLayoutUtils.h"
+#include "nsRenderingContext.h"
+#include "nsStyleContext.h"
+#include "nsDisplayList.h"
+
+using namespace mozilla;
+using namespace mozilla::gfx;
+using namespace mozilla::image;
+
+class nsGroupBoxFrame : public nsBoxFrame {
+public:
+  NS_DECL_FRAMEARENA_HELPERS
+
+  explicit nsGroupBoxFrame(nsStyleContext* aContext):
+    nsBoxFrame(aContext) {}
+
+  virtual nsresult GetXULBorderAndPadding(nsMargin& aBorderAndPadding) override;
+
+  virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,
+                                const nsRect&           aDirtyRect,
+                                const nsDisplayListSet& aLists) override;
+
+#ifdef DEBUG_FRAME_DUMP
+  virtual nsresult GetFrameName(nsAString& aResult) const override {
+    return MakeFrameName(NS_LITERAL_STRING("GroupBoxFrame"), aResult);
+  }
+#endif
+
+  virtual bool HonorPrintBackgroundSettings() override { return false; }
+
+  DrawResult PaintBorder(nsRenderingContext& aRenderingContext,
+                                   nsPoint aPt,
+                                   const nsRect& aDirtyRect);
+  nsRect GetBackgroundRectRelativeToSelf(nscoord* aOutYOffset = nullptr, nsRect* aOutGroupRect = nullptr);
+
+  // make sure we our kids get our orient and align instead of us.
+  // our child box has no content node so it will search for a parent with one.
+  // that will be us.
+  virtual void GetInitialOrientation(bool& aHorizontal) override { aHorizontal = false; }
+  virtual bool GetInitialHAlignment(Halignment& aHalign) override { aHalign = hAlign_Left; return true; } 
+  virtual bool GetInitialVAlignment(Valignment& aValign) override { aValign = vAlign_Top; return true; } 
+  virtual bool GetInitialAutoStretch(bool& aStretch) override { aStretch = true; return true; } 
+
+  nsIFrame* GetCaptionBox(nsRect& aCaptionRect);
+};
+
+/*
+class nsGroupBoxInnerFrame : public nsBoxFrame {
+public:
+
+    nsGroupBoxInnerFrame(nsIPresShell* aShell, nsStyleContext* aContext):
+      nsBoxFrame(aShell, aContext) {}
+
+
+#ifdef DEBUG_FRAME_DUMP
+  NS_IMETHOD GetFrameName(nsString& aResult) const {
+    return MakeFrameName("GroupBoxFrameInner", aResult);
+  }
+#endif
+  
+  // we are always flexible
+  virtual bool GetDefaultFlex(int32_t& aFlex) { aFlex = 1; return true; }
+
+};
+*/
+
+nsIFrame*
+NS_NewGroupBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
+{
+  return new (aPresShell) nsGroupBoxFrame(aContext);
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsGroupBoxFrame)
+
+class nsDisplayXULGroupBorder : public nsDisplayItem {
+public:
+  nsDisplayXULGroupBorder(nsDisplayListBuilder* aBuilder,
+                              nsGroupBoxFrame* aFrame) :
+    nsDisplayItem(aBuilder, aFrame) {
+    MOZ_COUNT_CTOR(nsDisplayXULGroupBorder);
+  }
+#ifdef NS_BUILD_REFCNT_LOGGING
+  virtual ~nsDisplayXULGroupBorder() {
+    MOZ_COUNT_DTOR(nsDisplayXULGroupBorder);
+  }
+#endif
+
+  nsDisplayItemGeometry* AllocateGeometry(nsDisplayListBuilder* aBuilder) override;
+  void ComputeInvalidationRegion(nsDisplayListBuilder* aBuilder,
+                                 const nsDisplayItemGeometry* aGeometry,
+                                 nsRegion *aInvalidRegion) override;
+  virtual void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
+                       HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames) override {
+    aOutFrames->AppendElement(mFrame);
+  }
+  virtual void Paint(nsDisplayListBuilder* aBuilder,
+                     nsRenderingContext* aCtx) override;
+  NS_DISPLAY_DECL_NAME("XULGroupBackground", TYPE_XUL_GROUP_BACKGROUND)
+};
+
+nsDisplayItemGeometry*
+nsDisplayXULGroupBorder::AllocateGeometry(nsDisplayListBuilder* aBuilder)
+{
+  return new nsDisplayItemGenericImageGeometry(this, aBuilder);
+}
+
+void
+nsDisplayXULGroupBorder::ComputeInvalidationRegion(
+  nsDisplayListBuilder* aBuilder,
+  const nsDisplayItemGeometry* aGeometry,
+  nsRegion* aInvalidRegion)
+{
+  auto geometry =
+    static_cast<const nsDisplayItemGenericImageGeometry*>(aGeometry);
+
+  if (aBuilder->ShouldSyncDecodeImages() &&
+      geometry->ShouldInvalidateToSyncDecodeImages()) {
+    bool snap;
+    aInvalidRegion->Or(*aInvalidRegion, GetBounds(aBuilder, &snap));
+  }
+
+  nsDisplayItem::ComputeInvalidationRegion(aBuilder, aGeometry, aInvalidRegion);
+}
+
+void
+nsDisplayXULGroupBorder::Paint(nsDisplayListBuilder* aBuilder,
+                                   nsRenderingContext* aCtx)
+{
+  DrawResult result = static_cast<nsGroupBoxFrame*>(mFrame)
+    ->PaintBorder(*aCtx, ToReferenceFrame(), mVisibleRect);
+
+  nsDisplayItemGenericImageGeometry::UpdateDrawResult(this, result);
+}
+
+void
+nsGroupBoxFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
+                                  const nsRect&           aDirtyRect,
+                                  const nsDisplayListSet& aLists)
+{
+  // Paint our background and border
+  if (IsVisibleForPainting(aBuilder)) {
+    nsDisplayBackgroundImage::AppendBackgroundItemsToTop(
+      aBuilder, this, GetBackgroundRectRelativeToSelf(),
+      aLists.BorderBackground());
+    aLists.BorderBackground()->AppendNewToTop(new (aBuilder)
+      nsDisplayXULGroupBorder(aBuilder, this));
+    
+    DisplayOutline(aBuilder, aLists);
+  }
+
+  BuildDisplayListForChildren(aBuilder, aDirtyRect, aLists);
+}
+
+nsRect
+nsGroupBoxFrame::GetBackgroundRectRelativeToSelf(nscoord* aOutYOffset, nsRect* aOutGroupRect)
+{
+  const nsMargin& border = StyleBorder()->GetComputedBorder();
+
+  nsRect groupRect;
+  nsIFrame* groupBox = GetCaptionBox(groupRect);
+
+  nscoord yoff = 0;
+  if (groupBox) {
+    // If the border is smaller than the legend, move the border down
+    // to be centered on the legend.
+    nsMargin groupMargin;
+    groupBox->StyleMargin()->GetMargin(groupMargin);
+    groupRect.Inflate(groupMargin);
+
+    if (border.top < groupRect.height) {
+      yoff = (groupRect.height - border.top) / 2 + groupRect.y;
+    }
+  }
+
+  if (aOutYOffset) {
+    *aOutYOffset = yoff;
+  }
+  if (aOutGroupRect) {
+    *aOutGroupRect = groupRect;
+  }
+
+  return nsRect(0, yoff, mRect.width, mRect.height - yoff);
+}
+
+DrawResult
+nsGroupBoxFrame::PaintBorder(nsRenderingContext& aRenderingContext,
+    nsPoint aPt, const nsRect& aDirtyRect) {
+
+  DrawTarget* drawTarget = aRenderingContext.GetDrawTarget();
+  gfxContext* gfx = aRenderingContext.ThebesContext();
+
+  Sides skipSides;
+  const nsStyleBorder* borderStyleData = StyleBorder();
+  const nsMargin& border = borderStyleData->GetComputedBorder();
+  nsPresContext* presContext = PresContext();
+
+  nsRect groupRect;
+  nsIFrame* groupBox = GetCaptionBox(groupRect);
+
+  nscoord yoff = 0;
+  nsRect rect = GetBackgroundRectRelativeToSelf(&yoff, &groupRect) + aPt;
+  groupRect += aPt;
+
+  DrawResult result = DrawResult::SUCCESS;
+  if (groupBox) {
+    int32_t appUnitsPerDevPixel = PresContext()->AppUnitsPerDevPixel();
+
+    // we should probably use PaintBorderEdges to do this but for now just use clipping
+    // to achieve the same effect.
+
+    // draw left side
+    nsRect clipRect(rect);
+    clipRect.width = groupRect.x - rect.x;
+    clipRect.height = border.top;
+
+    gfx->Save();
+    gfx->Clip(NSRectToSnappedRect(clipRect, appUnitsPerDevPixel, *drawTarget));
+    result &=
+      nsCSSRendering::PaintBorder(presContext, aRenderingContext, this,
+                                  aDirtyRect, rect, mStyleContext,
+                                  PaintBorderFlags::SYNC_DECODE_IMAGES, skipSides);
+    gfx->Restore();
+
+    // draw right side
+    clipRect = rect;
+    clipRect.x = groupRect.XMost();
+    clipRect.width = rect.XMost() - groupRect.XMost();
+    clipRect.height = border.top;
+
+    gfx->Save();
+    gfx->Clip(NSRectToSnappedRect(clipRect, appUnitsPerDevPixel, *drawTarget));
+    result &=
+      nsCSSRendering::PaintBorder(presContext, aRenderingContext, this,
+                                  aDirtyRect, rect, mStyleContext,
+                                  PaintBorderFlags::SYNC_DECODE_IMAGES, skipSides);
+    gfx->Restore();
+  
+    // draw bottom
+
+    clipRect = rect;
+    clipRect.y += border.top;
+    clipRect.height = mRect.height - (yoff + border.top);
+  
+    gfx->Save();
+    gfx->Clip(NSRectToSnappedRect(clipRect, appUnitsPerDevPixel, *drawTarget));
+    result &=
+      nsCSSRendering::PaintBorder(presContext, aRenderingContext, this,
+                                  aDirtyRect, rect, mStyleContext,
+                                  PaintBorderFlags::SYNC_DECODE_IMAGES, skipSides);
+    gfx->Restore();
+    
+  } else {
+    result &=
+      nsCSSRendering::PaintBorder(presContext, aRenderingContext, this,
+                                  aDirtyRect, nsRect(aPt, GetSize()),
+                                  mStyleContext,
+                                  PaintBorderFlags::SYNC_DECODE_IMAGES, skipSides);
+  }
+
+  return result;
+}
+
+nsIFrame*
+nsGroupBoxFrame::GetCaptionBox(nsRect& aCaptionRect)
+{
+    // first child is our grouped area
+    nsIFrame* box = nsBox::GetChildXULBox(this);
+
+    // no area fail.
+    if (!box)
+      return nullptr;
+
+    // get the first child in the grouped area, that is the caption
+    box = nsBox::GetChildXULBox(box);
+
+    // nothing in the area? fail
+    if (!box)
+      return nullptr;
+
+    // now get the caption itself. It is in the caption frame.
+    nsIFrame* child = nsBox::GetChildXULBox(box);
+
+    if (child) {
+       // convert to our coordinates.
+       nsRect parentRect(box->GetRect());
+       aCaptionRect = child->GetRect();
+       aCaptionRect.x += parentRect.x;
+       aCaptionRect.y += parentRect.y;
+    }
+
+    return child;
+}
+
+nsresult
+nsGroupBoxFrame::GetXULBorderAndPadding(nsMargin& aBorderAndPadding)
+{
+  aBorderAndPadding.SizeTo(0,0,0,0);
+  return NS_OK;
+}
+