Move nsCSSRendering::GetBorderRadiusTwips to nsIFrame and rename it to ComputeBorderRadii. (Bug 459144, patch 1) r=roc a2.0=blocking:beta6+

layout/base/nsCSSRendering.cpp

@@ -629,8 +629,8 @@ nsCSSRendering::PaintBorderWithStyleBorder(nsPresContext* aPresContext,
   }
 
   nsSize frameSize = aForFrame->GetSize();
-  GetBorderRadiusTwips(aStyleBorder.mBorderRadius, frameSize.width,
-                       frameSize.height, twipsRadii);
+  nsIFrame::ComputeBorderRadii(aStyleBorder.mBorderRadius, frameSize.width,
+                               frameSize.height, twipsRadii);
 
   // Turn off rendering for all of the zero sized sides
   if (aSkipSides & SIDE_BIT_TOP) border.top = 0;
@@ -750,8 +750,8 @@ nsCSSRendering::PaintOutline(nsPresContext* aPresContext,
     bgContext->GetVisitedDependentColor(eCSSProperty_background_color);
 
   // get the radius for our outline
-  GetBorderRadiusTwips(ourOutline->mOutlineRadius, aBorderArea.width,
-                       aBorderArea.height, twipsRadii);
+  nsIFrame::ComputeBorderRadii(ourOutline->mOutlineRadius, aBorderArea.width,
+                               aBorderArea.height, twipsRadii);
 
   // When the outline property is set on :-moz-anonymous-block or
   // :-moz-anonyomus-positioned-block pseudo-elements, it inherited that
@@ -1138,40 +1138,6 @@ nsCSSRendering::DidPaint()
   gInlineBGData->Reset();
 }
 
-PRBool
-nsCSSRendering::GetBorderRadiusTwips(const nsStyleCorners& aBorderRadius,
-                                     const nscoord aFrameWidth,
-                                     const nscoord aFrameHeight,
-                                     nscoord aRadii[8])
-{
-  PRBool result = PR_FALSE;
-
-  // Percentages are relative to whichever side they're on.
-  NS_FOR_CSS_HALF_CORNERS(i) {
-    const nsStyleCoord c = aBorderRadius.Get(i);
-    nscoord axis = NS_HALF_CORNER_IS_X(i) ? aFrameWidth : aFrameHeight;
-
-    switch (c.GetUnit()) {
-      case eStyleUnit_Percent:
-        aRadii[i] = (nscoord)(c.GetPercentValue() * axis);
-        break;
-
-      case eStyleUnit_Coord:
-        aRadii[i] = c.GetCoordValue();
-        break;
-
-      default:
-        NS_NOTREACHED("GetBorderRadiusTwips: bad unit");
-        aRadii[i] = 0;
-        break;
-    }
-
-    if (aRadii[i])
-      result = PR_TRUE;
-  }
-  return result;
-}
-
 void
 nsCSSRendering::PaintBoxShadowOuter(nsPresContext* aPresContext,
                                     nsIRenderingContext& aRenderingContext,
@@ -1201,11 +1167,8 @@ nsCSSRendering::PaintBoxShadowOuter(nsPresContext* aPresContext,
   } else {
     nativeTheme = PR_FALSE;
     nscoord twipsRadii[8];
-    hasBorderRadius =
-      GetBorderRadiusTwips(styleBorder->mBorderRadius,
-                           aFrameArea.width,
-                           aFrameArea.height,
-                           twipsRadii);
+    hasBorderRadius = nsIFrame::ComputeBorderRadii(styleBorder->mBorderRadius,
+                        aFrameArea.width, aFrameArea.height, twipsRadii);
     if (hasBorderRadius) {
       PRIntn sidesToSkip = aForFrame->GetSkipSides();
       ComputePixelRadii(twipsRadii, aFrameArea, sidesToSkip, twipsPerPixel,
@@ -1384,10 +1347,9 @@ nsCSSRendering::PaintBoxShadowInner(nsPresContext* aPresContext,
 
   // Get any border radius, since box-shadow must also have rounded corners if the frame does
   nscoord twipsRadii[8];
-  PRBool hasBorderRadius = GetBorderRadiusTwips(styleBorder->mBorderRadius,
-                                                aFrameArea.width,
-                                                aFrameArea.height,
-                                                twipsRadii);
+  PRBool hasBorderRadius = nsIFrame::ComputeBorderRadii(
+                             styleBorder->mBorderRadius, aFrameArea.width,
+                             aFrameArea.height, twipsRadii);
   nscoord twipsPerPixel = aPresContext->DevPixelsToAppUnits(1);
 
   nsRect paddingRect = aFrameArea;
@@ -2279,9 +2241,8 @@ nsCSSRendering::PaintBackgroundWithSC(nsPresContext* aPresContext,
   {
     nscoord radii[8];
     nsSize frameSize = aForFrame->GetSize();
-    haveRoundedCorners =
-      GetBorderRadiusTwips(aBorder.mBorderRadius, frameSize.width,
-                           frameSize.height, radii);
+    haveRoundedCorners = nsIFrame::ComputeBorderRadii(aBorder.mBorderRadius,
+                           frameSize.width, frameSize.height, radii);
     if (haveRoundedCorners)
       ComputePixelRadii(radii, aBorderArea, aForFrame->GetSkipSides(),
                         appUnitsPerPixel, &bgRadii);

layout/base/nsCSSRendering.h

@@ -73,16 +73,6 @@ struct nsCSSRendering {
                                   const nsRect& aFrameArea,
                                   const nsRect& aDirtyRect);
 
-  /**
-   * Get the size, in app units, of the border radii. It returns FALSE iff all
-   * returned radii == 0 (so no border radii), TRUE otherwise.
-   * For the aRadii indexes, use the NS_CORNER_* constants in nsStyleConsts.h
-   */
-  static PRBool GetBorderRadiusTwips(const nsStyleCorners& aBorderRadius,
-                                     const nscoord aFrameWidth,
-                                     const nscoord aFrameHeight,
-                                     nscoord aRadii[8]);
-
   /**
    * Render the border for an element using css rendering rules
    * for borders. aSkipSides is a bitmask of the sides to skip

layout/base/nsDisplayList.cpp

@@ -1009,11 +1009,9 @@ nsDisplayBoxShadowOuter::ComputeVisibility(nsDisplayListBuilder* aBuilder,
   // the visible region is entirely inside the border-rect, and box shadows
   // never render within the border-rect (unless there's a border radius).
   nscoord twipsRadii[8];
-  PRBool hasBorderRadii =
-     nsCSSRendering::GetBorderRadiusTwips(mFrame->GetStyleBorder()->
-                                          mBorderRadius,
-                                          frameRect.width, frameRect.height,
-                                          twipsRadii);
+  PRBool hasBorderRadii = nsIFrame::ComputeBorderRadii(
+                            mFrame->GetStyleBorder()->mBorderRadius,
+                            frameRect.width, frameRect.height, twipsRadii);
   if (!hasBorderRadii)
     return PR_FALSE;
 

layout/generic/nsFrame.cpp

@@ -736,6 +736,40 @@ nsIFrame::GetContentRect() const
   return r;
 }
 
+PRBool
+nsIFrame::ComputeBorderRadii(const nsStyleCorners& aBorderRadius,
+                             const nscoord aFrameWidth,
+                             const nscoord aFrameHeight,
+                             nscoord aRadii[8])
+{
+  PRBool result = PR_FALSE;
+
+  // Percentages are relative to whichever side they're on.
+  NS_FOR_CSS_HALF_CORNERS(i) {
+    const nsStyleCoord c = aBorderRadius.Get(i);
+    nscoord axis = NS_HALF_CORNER_IS_X(i) ? aFrameWidth : aFrameHeight;
+
+    switch (c.GetUnit()) {
+      case eStyleUnit_Percent:
+        aRadii[i] = (nscoord)(c.GetPercentValue() * axis);
+        break;
+
+      case eStyleUnit_Coord:
+        aRadii[i] = c.GetCoordValue();
+        break;
+
+      default:
+        NS_NOTREACHED("ComputeBorderRadii: bad unit");
+        aRadii[i] = 0;
+        break;
+    }
+
+    if (aRadii[i])
+      result = PR_TRUE;
+  }
+  return result;
+}
+
 nsStyleContext*
 nsFrame::GetAdditionalStyleContext(PRInt32 aIndex) const
 {

layout/generic/nsIFrame.h

@@ -918,6 +918,16 @@ public:
   nsRect GetPaddingRect() const;
   nsRect GetContentRect() const;
 
+  /**
+   * Get the size, in app units, of the border radii. It returns FALSE iff all
+   * returned radii == 0 (so no border radii), TRUE otherwise.
+   * For the aRadii indexes, use the NS_CORNER_* constants in nsStyleConsts.h
+   */
+  static PRBool ComputeBorderRadii(const nsStyleCorners& aBorderRadius,
+                                   const nscoord aFrameWidth,
+                                   const nscoord aFrameHeight,
+                                   nscoord aRadii[8]);
+
   /**
    * Get the position of the frame's baseline, relative to the top of
    * the frame (its top border edge).  Only valid when Reflow is not