Add m-esr52 at 52.6.0

1 files changed, 403 insertions, 0 deletions

diff --git a/layout/svg/nsSVGMaskFrame.cpp b/layout/svg/nsSVGMaskFrame.cpp
new file mode 100644
index 000000000..b8e4b32ae
--- /dev/null
+++ b/layout/svg/nsSVGMaskFrame.cpp
@@ -0,0 +1,403 @@
+/* -*- 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/. */
+
+// Main header first:
+#include "nsSVGMaskFrame.h"
+
+// Keep others in (case-insensitive) order:
+#include "gfx2DGlue.h"
+#include "gfxContext.h"
+#include "mozilla/gfx/2D.h"
+#include "mozilla/RefPtr.h"
+#include "nsSVGEffects.h"
+#include "mozilla/dom/SVGMaskElement.h"
+#ifdef BUILD_ARM_NEON
+#include "mozilla/arm.h"
+#include "nsSVGMaskFrameNEON.h"
+#endif
+
+using namespace mozilla;
+using namespace mozilla::dom;
+using namespace mozilla::gfx;
+
+// c = n / 255
+// c <= 0.04045 ? c / 12.92 : pow((c + 0.055) / 1.055, 2.4)) * 255 + 0.5
+static const uint8_t gsRGBToLinearRGBMap[256] = {
+  0,   0,   0,   0,   0,   0,   0,   1,
+  1,   1,   1,   1,   1,   1,   1,   1,
+  1,   1,   2,   2,   2,   2,   2,   2,
+  2,   2,   3,   3,   3,   3,   3,   3,
+  4,   4,   4,   4,   4,   5,   5,   5,
+  5,   6,   6,   6,   6,   7,   7,   7,
+  8,   8,   8,   8,   9,   9,   9,  10,
+ 10,  10,  11,  11,  12,  12,  12,  13,
+ 13,  13,  14,  14,  15,  15,  16,  16,
+ 17,  17,  17,  18,  18,  19,  19,  20,
+ 20,  21,  22,  22,  23,  23,  24,  24,
+ 25,  25,  26,  27,  27,  28,  29,  29,
+ 30,  30,  31,  32,  32,  33,  34,  35,
+ 35,  36,  37,  37,  38,  39,  40,  41,
+ 41,  42,  43,  44,  45,  45,  46,  47,
+ 48,  49,  50,  51,  51,  52,  53,  54,
+ 55,  56,  57,  58,  59,  60,  61,  62,
+ 63,  64,  65,  66,  67,  68,  69,  70,
+ 71,  72,  73,  74,  76,  77,  78,  79,
+ 80,  81,  82,  84,  85,  86,  87,  88,
+ 90,  91,  92,  93,  95,  96,  97,  99,
+100, 101, 103, 104, 105, 107, 108, 109,
+111, 112, 114, 115, 116, 118, 119, 121,
+122, 124, 125, 127, 128, 130, 131, 133,
+134, 136, 138, 139, 141, 142, 144, 146,
+147, 149, 151, 152, 154, 156, 157, 159,
+161, 163, 164, 166, 168, 170, 171, 173,
+175, 177, 179, 181, 183, 184, 186, 188,
+190, 192, 194, 196, 198, 200, 202, 204,
+206, 208, 210, 212, 214, 216, 218, 220,
+222, 224, 226, 229, 231, 233, 235, 237,
+239, 242, 244, 246, 248, 250, 253, 255
+};
+
+static void
+ComputesRGBLuminanceMask(const uint8_t *aSourceData,
+                         int32_t aSourceStride,
+                         uint8_t *aDestData,
+                         int32_t aDestStride,
+                         const IntSize &aSize,
+                         float aOpacity)
+{
+#ifdef BUILD_ARM_NEON
+  if (mozilla::supports_neon()) {
+    ComputesRGBLuminanceMask_NEON(aSourceData, aSourceStride,
+                                  aDestData, aDestStride,
+                                  aSize, aOpacity);
+    return;
+  }
+#endif
+
+  int32_t redFactor = 55 * aOpacity; // 255 * 0.2125 * opacity
+  int32_t greenFactor = 183 * aOpacity; // 255 * 0.7154 * opacity
+  int32_t blueFactor = 18 * aOpacity; // 255 * 0.0721
+  int32_t sourceOffset = aSourceStride - 4 * aSize.width;
+  const uint8_t *sourcePixel = aSourceData;
+  int32_t destOffset = aDestStride - aSize.width;
+  uint8_t *destPixel = aDestData;
+
+  for (int32_t y = 0; y < aSize.height; y++) {
+    for (int32_t x = 0; x < aSize.width; x++) {
+      uint8_t a = sourcePixel[GFX_ARGB32_OFFSET_A];
+
+      if (a) {
+        *destPixel = (redFactor * sourcePixel[GFX_ARGB32_OFFSET_R] +
+                      greenFactor * sourcePixel[GFX_ARGB32_OFFSET_G] +
+                      blueFactor * sourcePixel[GFX_ARGB32_OFFSET_B]) >> 8;
+      } else {
+        *destPixel = 0;
+      }
+      sourcePixel += 4;
+      destPixel++;
+    }
+    sourcePixel += sourceOffset;
+    destPixel += destOffset;
+  }
+}
+
+static void
+ComputeLinearRGBLuminanceMask(const uint8_t *aSourceData,
+                              int32_t aSourceStride,
+                              uint8_t *aDestData,
+                              int32_t aDestStride,
+                              const IntSize &aSize,
+                              float aOpacity)
+{
+  int32_t redFactor = 55 * aOpacity; // 255 * 0.2125 * opacity
+  int32_t greenFactor = 183 * aOpacity; // 255 * 0.7154 * opacity
+  int32_t blueFactor = 18 * aOpacity; // 255 * 0.0721
+  int32_t sourceOffset = aSourceStride - 4 * aSize.width;
+  const uint8_t *sourcePixel = aSourceData;
+  int32_t destOffset = aDestStride - aSize.width;
+  uint8_t *destPixel = aDestData;
+
+  for (int32_t y = 0; y < aSize.height; y++) {
+    for (int32_t x = 0; x < aSize.width; x++) {
+      uint8_t a = sourcePixel[GFX_ARGB32_OFFSET_A];
+
+      // unpremultiply
+      if (a) {
+        if (a == 255) {
+          /* sRGB -> linearRGB -> intensity */
+          *destPixel =
+            static_cast<uint8_t>
+                       ((gsRGBToLinearRGBMap[sourcePixel[GFX_ARGB32_OFFSET_R]] *
+                         redFactor +
+                         gsRGBToLinearRGBMap[sourcePixel[GFX_ARGB32_OFFSET_G]] *
+                         greenFactor +
+                         gsRGBToLinearRGBMap[sourcePixel[GFX_ARGB32_OFFSET_B]] *
+                         blueFactor) >> 8);
+        } else {
+          uint8_t tempPixel[4];
+          tempPixel[GFX_ARGB32_OFFSET_B] =
+            (255 * sourcePixel[GFX_ARGB32_OFFSET_B]) / a;
+          tempPixel[GFX_ARGB32_OFFSET_G] =
+            (255 * sourcePixel[GFX_ARGB32_OFFSET_G]) / a;
+          tempPixel[GFX_ARGB32_OFFSET_R] =
+            (255 * sourcePixel[GFX_ARGB32_OFFSET_R]) / a;
+
+          /* sRGB -> linearRGB -> intensity */
+          *destPixel =
+            static_cast<uint8_t>
+                       (((gsRGBToLinearRGBMap[tempPixel[GFX_ARGB32_OFFSET_R]] *
+                          redFactor +
+                          gsRGBToLinearRGBMap[tempPixel[GFX_ARGB32_OFFSET_G]] *
+                          greenFactor +
+                          gsRGBToLinearRGBMap[tempPixel[GFX_ARGB32_OFFSET_B]] *
+                          blueFactor) >> 8) * (a / 255.0f));
+        }
+      } else {
+        *destPixel = 0;
+      }
+      sourcePixel += 4;
+      destPixel++;
+    }
+    sourcePixel += sourceOffset;
+    destPixel += destOffset;
+  }
+}
+
+static void
+ComputeAlphaMask(const uint8_t *aSourceData,
+                 int32_t aSourceStride,
+                 uint8_t *aDestData,
+                 int32_t aDestStride,
+                 const IntSize &aSize,
+                 float aOpacity)
+{
+  int32_t sourceOffset = aSourceStride - 4 * aSize.width;
+  const uint8_t *sourcePixel = aSourceData;
+  int32_t destOffset = aDestStride - aSize.width;
+  uint8_t *destPixel = aDestData;
+
+  for (int32_t y = 0; y < aSize.height; y++) {
+    for (int32_t x = 0; x < aSize.width; x++) {
+      *destPixel = sourcePixel[GFX_ARGB32_OFFSET_A] * aOpacity;
+      sourcePixel += 4;
+      destPixel++;
+    }
+    sourcePixel += sourceOffset;
+    destPixel += destOffset;
+  }
+}
+
+//----------------------------------------------------------------------
+// Implementation
+
+nsIFrame*
+NS_NewSVGMaskFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
+{
+  return new (aPresShell) nsSVGMaskFrame(aContext);
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsSVGMaskFrame)
+
+already_AddRefed<SourceSurface>
+nsSVGMaskFrame::GetMaskForMaskedFrame(gfxContext* aContext,
+                                      nsIFrame* aMaskedFrame,
+                                      const gfxMatrix &aMatrix,
+                                      float aOpacity,
+                                      Matrix* aMaskTransform,
+                                      uint8_t aMaskOp)
+{
+  // If the flag is set when we get here, it means this mask frame
+  // has already been used painting the current mask, and the document
+  // has a mask reference loop.
+  if (mInUse) {
+    NS_WARNING("Mask loop detected!");
+    return nullptr;
+  }
+  AutoMaskReferencer maskRef(this);
+
+  gfxRect maskArea = GetMaskArea(aMaskedFrame);
+
+  // Get the clip extents in device space:
+  // Minimizing the mask surface extents (using both the current clip extents
+  // and maskArea) is important for performance.
+  aContext->Save();
+  nsSVGUtils::SetClipRect(aContext, aMatrix, maskArea);
+  aContext->SetMatrix(gfxMatrix());
+  gfxRect maskSurfaceRect = aContext->GetClipExtents();
+  maskSurfaceRect.RoundOut();
+  aContext->Restore();
+
+  bool resultOverflows;
+  IntSize maskSurfaceSize =
+    nsSVGUtils::ConvertToSurfaceSize(maskSurfaceRect.Size(), &resultOverflows);
+
+  if (resultOverflows || maskSurfaceSize.IsEmpty()) {
+    // XXXjwatt we should return an empty surface so we don't paint aMaskedFrame!
+    return nullptr;
+  }
+
+  RefPtr<DrawTarget> maskDT =
+    Factory::CreateDrawTarget(BackendType::CAIRO, maskSurfaceSize,
+                              SurfaceFormat::B8G8R8A8);
+  if (!maskDT || !maskDT->IsValid()) {
+    return nullptr;
+  }
+
+  gfxMatrix maskSurfaceMatrix =
+    aContext->CurrentMatrix() * gfxMatrix::Translation(-maskSurfaceRect.TopLeft());
+
+  RefPtr<gfxContext> tmpCtx = gfxContext::CreateOrNull(maskDT);
+  MOZ_ASSERT(tmpCtx); // already checked the draw target above
+  tmpCtx->SetMatrix(maskSurfaceMatrix);
+
+  mMatrixForChildren = GetMaskTransform(aMaskedFrame) * aMatrix;
+  for (nsIFrame* kid = mFrames.FirstChild(); kid;
+       kid = kid->GetNextSibling()) {
+    // The CTM of each frame referencing us can be different
+    nsISVGChildFrame* SVGFrame = do_QueryFrame(kid);
+    if (SVGFrame) {
+      SVGFrame->NotifySVGChanged(nsISVGChildFrame::TRANSFORM_CHANGED);
+    }
+    gfxMatrix m = mMatrixForChildren;
+    if (kid->GetContent()->IsSVGElement()) {
+      m = static_cast<nsSVGElement*>(kid->GetContent())->
+            PrependLocalTransformsTo(m, eUserSpaceToParent);
+    }
+    Unused << nsSVGUtils::PaintFrameWithEffects(kid, *tmpCtx, m);
+  }
+
+  RefPtr<SourceSurface> maskSnapshot = maskDT->Snapshot();
+  if (!maskSnapshot) {
+    return nullptr;
+  }
+  RefPtr<DataSourceSurface> maskSurface = maskSnapshot->GetDataSurface();
+  DataSourceSurface::MappedSurface map;
+  if (!maskSurface->Map(DataSourceSurface::MapType::READ, &map)) {
+    return nullptr;
+  }
+
+  // Create alpha channel mask for output
+  RefPtr<DataSourceSurface> destMaskSurface =
+    Factory::CreateDataSourceSurface(maskSurfaceSize, SurfaceFormat::A8);
+  if (!destMaskSurface) {
+    return nullptr;
+  }
+  DataSourceSurface::MappedSurface destMap;
+  if (!destMaskSurface->Map(DataSourceSurface::MapType::WRITE, &destMap)) {
+    return nullptr;
+  }
+
+  uint8_t maskType;
+  if (aMaskOp == NS_STYLE_MASK_MODE_MATCH_SOURCE) {
+    maskType = StyleSVGReset()->mMaskType;
+  } else {
+    maskType = aMaskOp == NS_STYLE_MASK_MODE_LUMINANCE ?
+                 NS_STYLE_MASK_TYPE_LUMINANCE : NS_STYLE_MASK_TYPE_ALPHA;
+  }
+
+  if (maskType == NS_STYLE_MASK_TYPE_LUMINANCE) {
+    if (StyleSVG()->mColorInterpolation ==
+        NS_STYLE_COLOR_INTERPOLATION_LINEARRGB) {
+      ComputeLinearRGBLuminanceMask(map.mData, map.mStride,
+                                    destMap.mData, destMap.mStride,
+                                    maskSurfaceSize, aOpacity);
+    } else {
+      ComputesRGBLuminanceMask(map.mData, map.mStride,
+                               destMap.mData, destMap.mStride,
+                               maskSurfaceSize, aOpacity);
+    }
+  } else {
+      ComputeAlphaMask(map.mData, map.mStride,
+                       destMap.mData, destMap.mStride,
+                       maskSurfaceSize, aOpacity);
+  }
+
+  maskSurface->Unmap();
+  destMaskSurface->Unmap();
+
+  // Moz2D transforms in the opposite direction to Thebes
+  if (!maskSurfaceMatrix.Invert()) {
+    return nullptr;
+  }
+
+  *aMaskTransform = ToMatrix(maskSurfaceMatrix);
+  return destMaskSurface.forget();
+}
+
+gfxRect
+nsSVGMaskFrame::GetMaskArea(nsIFrame* aMaskedFrame)
+{
+  SVGMaskElement *maskElem = static_cast<SVGMaskElement*>(mContent);
+
+  uint16_t units =
+    maskElem->mEnumAttributes[SVGMaskElement::MASKUNITS].GetAnimValue();
+  gfxRect bbox;
+  if (units == SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
+    bbox = nsSVGUtils::GetBBox(aMaskedFrame);
+  }
+
+  // Bounds in the user space of aMaskedFrame
+  gfxRect maskArea = nsSVGUtils::GetRelativeRect(units,
+                       &maskElem->mLengthAttributes[SVGMaskElement::ATTR_X],
+                       bbox, aMaskedFrame);
+
+  return maskArea;
+}
+
+nsresult
+nsSVGMaskFrame::AttributeChanged(int32_t  aNameSpaceID,
+                                 nsIAtom* aAttribute,
+                                 int32_t  aModType)
+{
+  if (aNameSpaceID == kNameSpaceID_None &&
+      (aAttribute == nsGkAtoms::x ||
+       aAttribute == nsGkAtoms::y ||
+       aAttribute == nsGkAtoms::width ||
+       aAttribute == nsGkAtoms::height||
+       aAttribute == nsGkAtoms::maskUnits ||
+       aAttribute == nsGkAtoms::maskContentUnits)) {
+    nsSVGEffects::InvalidateDirectRenderingObservers(this);
+  }
+
+  return nsSVGContainerFrame::AttributeChanged(aNameSpaceID,
+                                               aAttribute, aModType);
+}
+
+#ifdef DEBUG
+void
+nsSVGMaskFrame::Init(nsIContent*       aContent,
+                     nsContainerFrame* aParent,
+                     nsIFrame*         aPrevInFlow)
+{
+  NS_ASSERTION(aContent->IsSVGElement(nsGkAtoms::mask),
+               "Content is not an SVG mask");
+
+  nsSVGContainerFrame::Init(aContent, aParent, aPrevInFlow);
+}
+#endif /* DEBUG */
+
+nsIAtom *
+nsSVGMaskFrame::GetType() const
+{
+  return nsGkAtoms::svgMaskFrame;
+}
+
+gfxMatrix
+nsSVGMaskFrame::GetCanvasTM()
+{
+  return mMatrixForChildren;
+}
+
+gfxMatrix
+nsSVGMaskFrame::GetMaskTransform(nsIFrame* aMaskedFrame)
+{
+  SVGMaskElement *content = static_cast<SVGMaskElement*>(mContent);
+
+  nsSVGEnum* maskContentUnits =
+    &content->mEnumAttributes[SVGMaskElement::MASKCONTENTUNITS];
+
+  return nsSVGUtils::AdjustMatrixForUnits(gfxMatrix(), maskContentUnits,
+                                          aMaskedFrame);
+}