Add m-esr52 at 52.6.0

1 files changed, 523 insertions, 0 deletions

diff --git a/gfx/2d/PathD2D.cpp b/gfx/2d/PathD2D.cpp
new file mode 100644
index 000000000..b10e456e1
--- /dev/null
+++ b/gfx/2d/PathD2D.cpp
@@ -0,0 +1,523 @@
+/* -*- Mode: C++; tab-width: 20; 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/. */
+
+#include "PathD2D.h"
+#include "HelpersD2D.h"
+#include <math.h>
+#include "DrawTargetD2D1.h"
+#include "Logging.h"
+
+namespace mozilla {
+namespace gfx {
+
+// This class exists as a wrapper for ID2D1SimplifiedGeometry sink, it allows
+// a geometry to be duplicated into a geometry sink, while removing the final
+// figure end and thus allowing a figure that was implicitly closed to be
+// continued.
+class OpeningGeometrySink : public ID2D1SimplifiedGeometrySink
+{
+public:
+  OpeningGeometrySink(ID2D1SimplifiedGeometrySink *aSink)
+    : mSink(aSink)
+    , mNeedsFigureEnded(false)
+  {
+  }
+
+  HRESULT STDMETHODCALLTYPE QueryInterface(const IID &aIID, void **aPtr)
+  {
+    if (!aPtr) {
+      return E_POINTER;
+    }
+
+    if (aIID == IID_IUnknown) {
+      *aPtr = static_cast<IUnknown*>(this);
+      return S_OK;
+    } else if (aIID == IID_ID2D1SimplifiedGeometrySink) {
+      *aPtr = static_cast<ID2D1SimplifiedGeometrySink*>(this);
+      return S_OK;
+    }
+
+    return E_NOINTERFACE;
+  }
+
+  ULONG STDMETHODCALLTYPE AddRef()
+  {
+    return 1;
+  }
+
+  ULONG STDMETHODCALLTYPE Release()
+  {
+    return 1;
+  }
+
+  // We ignore SetFillMode, the copier will decide.
+  STDMETHOD_(void, SetFillMode)(D2D1_FILL_MODE aMode)
+  { EnsureFigureEnded(); return; }
+  STDMETHOD_(void, BeginFigure)(D2D1_POINT_2F aPoint, D2D1_FIGURE_BEGIN aBegin)
+  { EnsureFigureEnded(); return mSink->BeginFigure(aPoint, aBegin); }
+  STDMETHOD_(void, AddLines)(const D2D1_POINT_2F *aLines, UINT aCount)
+  { EnsureFigureEnded(); return mSink->AddLines(aLines, aCount); }
+  STDMETHOD_(void, AddBeziers)(const D2D1_BEZIER_SEGMENT *aSegments, UINT aCount)
+  { EnsureFigureEnded(); return mSink->AddBeziers(aSegments, aCount); }
+  STDMETHOD(Close)()
+  { /* Should never be called! */ return S_OK; }
+  STDMETHOD_(void, SetSegmentFlags)(D2D1_PATH_SEGMENT aFlags)
+  { return mSink->SetSegmentFlags(aFlags); }
+
+  // This function is special - it's the reason this class exists.
+  // It needs to intercept the very last endfigure. So that a user can
+  // continue writing to this sink as if they never stopped.
+  STDMETHOD_(void, EndFigure)(D2D1_FIGURE_END aEnd)
+  {
+    if (aEnd == D2D1_FIGURE_END_CLOSED) {
+      return mSink->EndFigure(aEnd);
+    } else {
+      mNeedsFigureEnded = true;
+    }
+  }
+private:
+  void EnsureFigureEnded()
+  {
+    if (mNeedsFigureEnded) {
+      mSink->EndFigure(D2D1_FIGURE_END_OPEN);
+      mNeedsFigureEnded = false;
+    }
+  }
+
+  ID2D1SimplifiedGeometrySink *mSink;
+  bool mNeedsFigureEnded;
+};
+
+class MOZ_STACK_CLASS AutoRestoreFP
+{
+public:
+  AutoRestoreFP()
+  {
+    // save the current floating point control word
+    _controlfp_s(&savedFPSetting, 0, 0);
+    UINT unused;
+    // set the floating point control word to its default value
+    _controlfp_s(&unused, _CW_DEFAULT, MCW_PC);
+  }
+  ~AutoRestoreFP()
+  {
+    UINT unused;
+    // restore the saved floating point control word
+    _controlfp_s(&unused, savedFPSetting, MCW_PC);
+  }
+private:
+  UINT savedFPSetting;
+};
+
+// Note that overrides of ID2D1SimplifiedGeometrySink methods in this class may
+// get called from D2D with nonstandard floating point settings (see comments in
+// bug 1134549) - use AutoRestoreFP to reset the floating point control word to
+// what we expect
+class StreamingGeometrySink : public ID2D1SimplifiedGeometrySink
+{
+public:
+  StreamingGeometrySink(PathSink *aSink)
+    : mSink(aSink)
+  {
+  }
+
+  HRESULT STDMETHODCALLTYPE QueryInterface(const IID &aIID, void **aPtr)
+  {
+    if (!aPtr) {
+      return E_POINTER;
+    }
+
+    if (aIID == IID_IUnknown) {
+      *aPtr = static_cast<IUnknown*>(this);
+      return S_OK;
+    } else if (aIID == IID_ID2D1SimplifiedGeometrySink) {
+      *aPtr = static_cast<ID2D1SimplifiedGeometrySink*>(this);
+      return S_OK;
+    }
+
+    return E_NOINTERFACE;
+  }
+
+  ULONG STDMETHODCALLTYPE AddRef()
+  {
+    return 1;
+  }
+
+  ULONG STDMETHODCALLTYPE Release()
+  {
+    return 1;
+  }
+
+  // We ignore SetFillMode, this depends on the destination sink.
+  STDMETHOD_(void, SetFillMode)(D2D1_FILL_MODE aMode)
+  { return; }
+  STDMETHOD_(void, BeginFigure)(D2D1_POINT_2F aPoint, D2D1_FIGURE_BEGIN aBegin)
+  {
+    AutoRestoreFP resetFloatingPoint;
+    mSink->MoveTo(ToPoint(aPoint));
+  }
+  STDMETHOD_(void, AddLines)(const D2D1_POINT_2F *aLines, UINT aCount)
+  {
+    AutoRestoreFP resetFloatingPoint;
+    for (UINT i = 0; i < aCount; i++) { mSink->LineTo(ToPoint(aLines[i])); }
+  }
+  STDMETHOD_(void, AddBeziers)(const D2D1_BEZIER_SEGMENT *aSegments, UINT aCount)
+  {
+    AutoRestoreFP resetFloatingPoint;
+    for (UINT i = 0; i < aCount; i++) {
+      mSink->BezierTo(ToPoint(aSegments[i].point1), ToPoint(aSegments[i].point2), ToPoint(aSegments[i].point3));
+    }
+  }
+  STDMETHOD(Close)()
+  { /* Should never be called! */ return S_OK; }
+  STDMETHOD_(void, SetSegmentFlags)(D2D1_PATH_SEGMENT aFlags)
+  { /* Should never be called! */ }
+
+  STDMETHOD_(void, EndFigure)(D2D1_FIGURE_END aEnd)
+  {
+    AutoRestoreFP resetFloatingPoint;
+    if (aEnd == D2D1_FIGURE_END_CLOSED) {
+      return mSink->Close();
+    }
+  }
+private:
+
+  PathSink *mSink;
+};
+
+PathBuilderD2D::~PathBuilderD2D()
+{
+}
+
+void
+PathBuilderD2D::MoveTo(const Point &aPoint)
+{
+  if (mFigureActive) {
+    mSink->EndFigure(D2D1_FIGURE_END_OPEN);
+    mFigureActive = false;
+  }
+  EnsureActive(aPoint);
+  mCurrentPoint = aPoint;
+}
+
+void
+PathBuilderD2D::LineTo(const Point &aPoint)
+{
+  EnsureActive(aPoint);
+  mSink->AddLine(D2DPoint(aPoint));
+
+  mCurrentPoint = aPoint;
+}
+
+void
+PathBuilderD2D::BezierTo(const Point &aCP1,
+                         const Point &aCP2,
+                         const Point &aCP3)
+  {
+  EnsureActive(aCP1);
+  mSink->AddBezier(D2D1::BezierSegment(D2DPoint(aCP1),
+                                       D2DPoint(aCP2),
+                                       D2DPoint(aCP3)));
+
+  mCurrentPoint = aCP3;
+}
+
+void
+PathBuilderD2D::QuadraticBezierTo(const Point &aCP1,
+                                  const Point &aCP2)
+{
+  EnsureActive(aCP1);
+  mSink->AddQuadraticBezier(D2D1::QuadraticBezierSegment(D2DPoint(aCP1),
+                                                         D2DPoint(aCP2)));
+
+  mCurrentPoint = aCP2;
+}
+
+void
+PathBuilderD2D::Close()
+{
+  if (mFigureActive) {
+    mSink->EndFigure(D2D1_FIGURE_END_CLOSED);
+
+    mFigureActive = false;
+
+    EnsureActive(mBeginPoint);
+  }
+}
+
+void
+PathBuilderD2D::Arc(const Point &aOrigin, Float aRadius, Float aStartAngle,
+                 Float aEndAngle, bool aAntiClockwise)
+{
+  MOZ_ASSERT(aRadius >= 0);
+
+  if (aAntiClockwise && aStartAngle < aEndAngle) {
+    // D2D does things a little differently, and draws the arc by specifying an
+    // beginning and an end point. This means the circle will be the wrong way
+    // around if the start angle is smaller than the end angle. It might seem
+    // tempting to invert aAntiClockwise but that would change the sweeping
+    // direction of the arc so instead we exchange start/begin.
+    Float oldStart = aStartAngle;
+    aStartAngle = aEndAngle;
+    aEndAngle = oldStart;
+  }
+
+  // XXX - Workaround for now, D2D does not appear to do the desired thing when
+  // the angle sweeps a complete circle.
+  bool fullCircle = false;
+  if (aEndAngle - aStartAngle >= 2 * M_PI) {
+    fullCircle = true;
+    aEndAngle = Float(aStartAngle + M_PI * 1.9999);
+  } else if (aStartAngle - aEndAngle >= 2 * M_PI) {
+    fullCircle = true;
+    aStartAngle = Float(aEndAngle + M_PI * 1.9999);
+  }
+
+  Point startPoint;
+  startPoint.x = aOrigin.x + aRadius * cos(aStartAngle);
+  startPoint.y = aOrigin.y + aRadius * sin(aStartAngle);
+
+  if (!mFigureActive) {
+    EnsureActive(startPoint);
+  } else {
+    mSink->AddLine(D2DPoint(startPoint));
+  }
+
+  Point endPoint;
+  endPoint.x = aOrigin.x + aRadius * cosf(aEndAngle);
+  endPoint.y = aOrigin.y + aRadius * sinf(aEndAngle);
+
+  D2D1_ARC_SIZE arcSize = D2D1_ARC_SIZE_SMALL;
+  D2D1_SWEEP_DIRECTION direction =
+    aAntiClockwise ? D2D1_SWEEP_DIRECTION_COUNTER_CLOCKWISE :
+                     D2D1_SWEEP_DIRECTION_CLOCKWISE;
+
+  // if startPoint and endPoint of our circle are too close there are D2D issues
+  // with drawing the circle as a single arc
+  const Float kEpsilon = 1e-5f;
+  if (!fullCircle ||
+      (std::abs(startPoint.x - endPoint.x) +
+       std::abs(startPoint.y - endPoint.y) > kEpsilon)) {
+
+    if (aAntiClockwise) {
+      if (aStartAngle - aEndAngle > M_PI) {
+        arcSize = D2D1_ARC_SIZE_LARGE;
+      }
+    } else {
+      if (aEndAngle - aStartAngle > M_PI) {
+        arcSize = D2D1_ARC_SIZE_LARGE;
+      }
+    }
+
+    mSink->AddArc(D2D1::ArcSegment(D2DPoint(endPoint),
+                                   D2D1::SizeF(aRadius, aRadius),
+                                   0.0f,
+                                   direction,
+                                   arcSize));
+  }
+  else {
+    // our first workaround attempt didn't work, so instead draw the circle as
+    // two half-circles
+    Float midAngle = aEndAngle > aStartAngle ?
+      Float(aStartAngle + M_PI) : Float(aEndAngle + M_PI);
+    Point midPoint;
+    midPoint.x = aOrigin.x + aRadius * cosf(midAngle);
+    midPoint.y = aOrigin.y + aRadius * sinf(midAngle);
+
+    mSink->AddArc(D2D1::ArcSegment(D2DPoint(midPoint),
+                                   D2D1::SizeF(aRadius, aRadius),
+                                   0.0f,
+                                   direction,
+                                   arcSize));
+
+    // if the adjusted endPoint computed above is used here and endPoint !=
+    // startPoint then this half of the circle won't render...
+    mSink->AddArc(D2D1::ArcSegment(D2DPoint(startPoint),
+                                   D2D1::SizeF(aRadius, aRadius),
+                                   0.0f,
+                                   direction,
+                                   arcSize));
+  }
+
+  mCurrentPoint = endPoint;
+}
+
+Point
+PathBuilderD2D::CurrentPoint() const
+{
+  return mCurrentPoint;
+}
+
+void
+PathBuilderD2D::EnsureActive(const Point &aPoint)
+{
+  if (!mFigureActive) {
+    mSink->BeginFigure(D2DPoint(aPoint), D2D1_FIGURE_BEGIN_FILLED);
+    mBeginPoint = aPoint;
+    mFigureActive = true;
+  }
+}
+
+already_AddRefed<Path>
+PathBuilderD2D::Finish()
+{
+  if (mFigureActive) {
+    mSink->EndFigure(D2D1_FIGURE_END_OPEN);
+  }
+
+  HRESULT hr = mSink->Close();
+  if (FAILED(hr)) {
+    gfxCriticalNote << "Failed to close PathSink. Code: " << hexa(hr);
+    return nullptr;
+  }
+
+  return MakeAndAddRef<PathD2D>(mGeometry, mFigureActive, mCurrentPoint, mFillRule, mBackendType);
+}
+
+already_AddRefed<PathBuilder>
+PathD2D::CopyToBuilder(FillRule aFillRule) const
+{
+  return TransformedCopyToBuilder(Matrix(), aFillRule);
+}
+
+already_AddRefed<PathBuilder>
+PathD2D::TransformedCopyToBuilder(const Matrix &aTransform, FillRule aFillRule) const
+{
+  RefPtr<ID2D1PathGeometry> path;
+  HRESULT hr = DrawTargetD2D1::factory()->CreatePathGeometry(getter_AddRefs(path));
+
+  if (FAILED(hr)) {
+    gfxWarning() << "Failed to create PathGeometry. Code: " << hexa(hr);
+    return nullptr;
+  }
+
+  RefPtr<ID2D1GeometrySink> sink;
+  hr = path->Open(getter_AddRefs(sink));
+  if (FAILED(hr)) {
+    gfxWarning() << "Failed to open Geometry for writing. Code: " << hexa(hr);
+    return nullptr;
+  }
+
+  if (aFillRule == FillRule::FILL_WINDING) {
+    sink->SetFillMode(D2D1_FILL_MODE_WINDING);
+  }
+
+  if (mEndedActive) {
+    OpeningGeometrySink wrapSink(sink);
+    hr = mGeometry->Simplify(D2D1_GEOMETRY_SIMPLIFICATION_OPTION_CUBICS_AND_LINES,
+                             D2DMatrix(aTransform),
+                             &wrapSink);
+  } else {
+    hr = mGeometry->Simplify(D2D1_GEOMETRY_SIMPLIFICATION_OPTION_CUBICS_AND_LINES,
+                             D2DMatrix(aTransform),
+                             sink);
+  }
+  if (FAILED(hr)) {
+    gfxWarning() << "Failed to simplify PathGeometry to tranformed copy. Code: " << hexa(hr) << " Active: " << mEndedActive;
+    return nullptr;
+  }
+
+  RefPtr<PathBuilderD2D> pathBuilder = new PathBuilderD2D(sink, path, aFillRule, mBackendType);
+  
+  pathBuilder->mCurrentPoint = aTransform.TransformPoint(mEndPoint);
+  
+  if (mEndedActive) {
+    pathBuilder->mFigureActive = true;
+  }
+
+  return pathBuilder.forget();
+}
+
+void
+PathD2D::StreamToSink(PathSink *aSink) const
+{
+  HRESULT hr;
+
+  StreamingGeometrySink sink(aSink);
+
+  hr = mGeometry->Simplify(D2D1_GEOMETRY_SIMPLIFICATION_OPTION_CUBICS_AND_LINES,
+                           D2D1::IdentityMatrix(), &sink);
+
+  if (FAILED(hr)) {
+    gfxWarning() << "Failed to stream D2D path to sink. Code: " << hexa(hr);
+    return;
+  }
+}
+ 
+bool
+PathD2D::ContainsPoint(const Point &aPoint, const Matrix &aTransform) const
+{
+  BOOL result;
+
+  HRESULT hr = mGeometry->FillContainsPoint(D2DPoint(aPoint), D2DMatrix(aTransform), 0.001f, &result);
+
+  if (FAILED(hr)) {
+    // Log
+    return false;
+  }
+
+  return !!result;
+}
+
+bool
+PathD2D::StrokeContainsPoint(const StrokeOptions &aStrokeOptions,
+                             const Point &aPoint,
+                             const Matrix &aTransform) const
+{
+  BOOL result;
+
+  RefPtr<ID2D1StrokeStyle> strokeStyle = CreateStrokeStyleForOptions(aStrokeOptions);
+  HRESULT hr = mGeometry->StrokeContainsPoint(D2DPoint(aPoint),
+                                              aStrokeOptions.mLineWidth,
+                                              strokeStyle,
+                                              D2DMatrix(aTransform),
+                                              &result);
+
+  if (FAILED(hr)) {
+    // Log
+    return false;
+  }
+
+  return !!result;
+}
+
+Rect
+PathD2D::GetBounds(const Matrix &aTransform) const
+{
+  D2D1_RECT_F d2dBounds;
+
+  HRESULT hr = mGeometry->GetBounds(D2DMatrix(aTransform), &d2dBounds);
+
+  Rect bounds = ToRect(d2dBounds);
+  if (FAILED(hr) || !bounds.IsFinite()) {
+    gfxWarning() << "Failed to get stroked bounds for path. Code: " << hexa(hr);
+    return Rect();
+  }
+
+  return bounds;
+}
+
+Rect
+PathD2D::GetStrokedBounds(const StrokeOptions &aStrokeOptions,
+                          const Matrix &aTransform) const
+{
+  D2D1_RECT_F d2dBounds;
+
+  RefPtr<ID2D1StrokeStyle> strokeStyle = CreateStrokeStyleForOptions(aStrokeOptions);
+  HRESULT hr =
+    mGeometry->GetWidenedBounds(aStrokeOptions.mLineWidth, strokeStyle,
+                                D2DMatrix(aTransform), &d2dBounds);
+
+  Rect bounds = ToRect(d2dBounds);
+  if (FAILED(hr) || !bounds.IsFinite()) {
+    gfxWarning() << "Failed to get stroked bounds for path. Code: " << hexa(hr);
+    return Rect();
+  }
+
+  return bounds;
+}
+
+}
+}