gfxMatrix
SVGMarkerElement::GetMarkerTransform(float aStrokeWidth,
float aX, float aY, float aAutoAngle)
{
gfxFloat scale = mEnumAttributes[MARKERUNITS].GetAnimValue() ==
SVG_MARKERUNITS_STROKEWIDTH ? aStrokeWidth : 1.0;
gfxFloat angle = mOrientType.GetAnimValue() == SVG_MARKER_ORIENT_AUTO ?
aAutoAngle :
mAngleAttributes[ORIENT].GetAnimValue() * M_PI / 180.0;
return gfxMatrix(cos(angle) * scale, sin(angle) * scale,
-sin(angle) * scale, cos(angle) * scale,
aX, aY);
}
NS_IMETHODIMP
nsSVGPathGeometryFrame::UpdateCoveredRegion()
{
gfxRect extent = GetBBoxContribution(gfxMatrix(),
nsSVGUtils::eBBoxIncludeFill | nsSVGUtils::eBBoxIgnoreFillIfNone |
nsSVGUtils::eBBoxIncludeStroke | nsSVGUtils::eBBoxIgnoreStrokeIfNone |
nsSVGUtils::eBBoxIncludeMarkers);
mRect = nsLayoutUtils::RoundGfxRectToAppRect(extent,
PresContext()->AppUnitsPerCSSPixel());
// See bug 614732 comment 32.
mCoveredRegion = nsSVGUtils::TransformFrameRectToOuterSVG(
mRect, GetCanvasTM(), PresContext());
return NS_OK;
}
gfx3DMatrix
Layer::SnapTransform(const gfx3DMatrix& aTransform,
const gfxRect& aSnapRect,
gfxMatrix* aResidualTransform)
{
if (aResidualTransform) {
*aResidualTransform = gfxMatrix();
}
gfxMatrix matrix2D;
gfx3DMatrix result;
if (mManager->IsSnappingEffectiveTransforms() &&
aTransform.Is2D(&matrix2D) &&
matrix2D.HasNonIntegerTranslation() &&
!matrix2D.IsSingular() &&
!matrix2D.HasNonAxisAlignedTransform()) {
gfxMatrix snappedMatrix;
gfxPoint topLeft = matrix2D.Transform(aSnapRect.TopLeft());
topLeft.Round();
// first compute scale factors that scale aSnapRect to the snapped rect
if (aSnapRect.IsEmpty()) {
snappedMatrix.xx = matrix2D.xx;
snappedMatrix.yy = matrix2D.yy;
} else {
gfxPoint bottomRight = matrix2D.Transform(aSnapRect.BottomRight());
bottomRight.Round();
snappedMatrix.xx = (bottomRight.x - topLeft.x)/aSnapRect.Width();
snappedMatrix.yy = (bottomRight.y - topLeft.y)/aSnapRect.Height();
}
// compute translation factors that will move aSnapRect to the snapped rect
// given those scale factors
snappedMatrix.x0 = topLeft.x - aSnapRect.pos.x*snappedMatrix.xx;
snappedMatrix.y0 = topLeft.y - aSnapRect.pos.y*snappedMatrix.yy;
result = gfx3DMatrix::From2D(snappedMatrix);
if (aResidualTransform && !snappedMatrix.IsSingular()) {
// set aResidualTransform so that aResidual * snappedMatrix == matrix2D.
// (i.e., appying snappedMatrix after aResidualTransform gives the
// ideal transform.
gfxMatrix snappedMatrixInverse = snappedMatrix;
snappedMatrixInverse.Invert();
*aResidualTransform = matrix2D * snappedMatrixInverse;
}
} else {
result = aTransform;
}
return result;
}
gfx3DMatrix
nsSVGForeignObjectFrame::GetTransformMatrix(nsIFrame* aAncestor,
nsIFrame **aOutAncestor)
{
NS_PRECONDITION(aOutAncestor, "We need an ancestor to write to!");
/* Set the ancestor to be the outer frame. */
*aOutAncestor = nsSVGUtils::GetOuterSVGFrame(this);
NS_ASSERTION(*aOutAncestor, "How did we end up without an outer frame?");
if (GetStateBits() & NS_STATE_SVG_NONDISPLAY_CHILD) {
return gfx3DMatrix::From2D(gfxMatrix(0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
}
/* Return the matrix back to the root, factoring in the x and y offsets. */
return gfx3DMatrix::From2D(GetCanvasTMForChildren());
}
gfxMatrix
nsSVGMarkerElement::GetMarkerTransform(float aStrokeWidth,
float aX, float aY, float aAngle)
{
float scale = 1.0;
if (mEnumAttributes[MARKERUNITS].GetAnimValue() ==
SVG_MARKERUNITS_STROKEWIDTH)
scale = aStrokeWidth;
if (mOrientType.GetAnimValue() != SVG_MARKER_ORIENT_AUTO) {
aAngle = mAngleAttributes[ORIENT].GetAnimValue();
}
return gfxMatrix(cos(aAngle) * scale, sin(aAngle) * scale,
-sin(aAngle) * scale, cos(aAngle) * scale,
aX, aY);
}
static already_AddRefed<gfxDrawable>
DrawableFromPaintServer(nsIFrame* aFrame,
nsIFrame* aTarget,
const nsSize& aPaintServerSize,
const gfxIntSize& aRenderSize)
{
// aPaintServerSize is the size that would be filled when using
// background-repeat:no-repeat and background-size:auto. For normal background
// images, this would be the intrinsic size of the image; for gradients and
// patterns this would be the whole target frame fill area.
// aRenderSize is what we will be actually filling after accounting for
// background-size.
if (aFrame->IsFrameOfType(nsIFrame::eSVGPaintServer)) {
// aFrame is either a pattern or a gradient. These fill the whole target
// frame by default, so aPaintServerSize is the whole target background fill
// area.
nsSVGPaintServerFrame* server =
static_cast<nsSVGPaintServerFrame*>(aFrame);
gfxRect overrideBounds(0, 0,
aPaintServerSize.width, aPaintServerSize.height);
overrideBounds.ScaleInverse(aFrame->PresContext()->AppUnitsPerDevPixel());
nsRefPtr<gfxPattern> pattern =
server->GetPaintServerPattern(aTarget, 1.0, &overrideBounds);
// pattern is now set up to fill aPaintServerSize. But we want it to
// fill aRenderSize, so we need to add a scaling transform.
// We couldn't just have set overrideBounds to aRenderSize - it would have
// worked for gradients, but for patterns it would result in a different
// pattern size.
gfxFloat scaleX = overrideBounds.Width() / aRenderSize.width;
gfxFloat scaleY = overrideBounds.Height() / aRenderSize.height;
gfxMatrix scaleMatrix = gfxMatrix().Scale(scaleX, scaleY);
pattern->SetMatrix(scaleMatrix.Multiply(pattern->GetMatrix()));
nsRefPtr<gfxDrawable> drawable =
new gfxPatternDrawable(pattern, aRenderSize);
return drawable.forget();
}
// We don't want to paint into a surface as long as we don't need to, so we
// set up a drawing callback.
nsRefPtr<gfxDrawingCallback> cb =
new PaintFrameCallback(aFrame, aTarget, aPaintServerSize, aRenderSize);
nsRefPtr<gfxDrawable> drawable = new gfxCallbackDrawable(cb, aRenderSize);
return drawable.forget();
}
/* GetThebesMatrix converts the stored matrix in a few steps. */
gfxMatrix nsStyleTransformMatrix::GetThebesMatrix(const nsRect& aBounds,
float aScale) const
{
/* Compute the graphics matrix. We take the stored main elements, along with
* the delta, and add in the matrices:
*
* | 0 0 dx1|
* | 0 0 dx2| * width
* | 0 0 0|
*
* | 0 0 dy1|
* | 0 0 dy2| * height
* | 0 0 0|
*/
return gfxMatrix(mMain[0], mMain[1], mMain[2], mMain[3],
NSAppUnitsToFloatPixels(GetXTranslation(aBounds), aScale),
NSAppUnitsToFloatPixels(GetYTranslation(aBounds), aScale));
}
gfxMatrix
nsSVGGradientFrame::GetGradientTransform(nsSVGGeometryFrame *aSource)
{
gfxMatrix bboxMatrix;
PRUint16 gradientUnits = GetGradientUnits();
nsIAtom *callerType = aSource->GetType();
if (gradientUnits == nsIDOMSVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE) {
// If this gradient is applied to text, our caller
// will be the glyph, which is not a container, so we
// need to get the parent
if (callerType == nsGkAtoms::svgGlyphFrame)
mSourceContent = static_cast<nsSVGElement*>
(aSource->GetContent()->GetParent());
else
mSourceContent = static_cast<nsSVGElement*>(aSource->GetContent());
NS_ASSERTION(mSourceContent, "Can't get content for gradient");
}
else {
NS_ASSERTION(gradientUnits == nsIDOMSVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX,
"Unknown gradientUnits type");
// objectBoundingBox is the default anyway
nsIFrame *frame = (callerType == nsGkAtoms::svgGlyphFrame) ?
aSource->GetParent() : aSource;
gfxRect bbox = nsSVGUtils::GetBBox(frame);
bboxMatrix = gfxMatrix(bbox.Width(), 0, 0, bbox.Height(), bbox.X(), bbox.Y());
}
nsSVGGradientElement *element =
GetGradientWithAttr(nsGkAtoms::gradientTransform, mContent);
nsCOMPtr<nsIDOMSVGTransformList> trans;
element->mGradientTransform->GetAnimVal(getter_AddRefs(trans));
nsCOMPtr<nsIDOMSVGMatrix> gradientTransform =
nsSVGTransformList::GetConsolidationMatrix(trans);
if (!gradientTransform)
return bboxMatrix;
return bboxMatrix.PreMultiply(nsSVGUtils::ConvertSVGMatrixToThebes(gradientTransform));
}
bool
HwcComposer2D::TryRender(Layer* aRoot,
const gfxMatrix& aGLWorldTransform)
{
if (!aGLWorldTransform.PreservesAxisAlignedRectangles()) {
LOGD("Render aborted. World transform has non-square angle rotation");
return false;
}
MOZ_ASSERT(Initialized());
if (mList) {
mList->numHwLayers = 0;
mHwcLayerMap.Clear();
}
if (mPrepared) {
Reset();
}
// XXX: The clear() below means all rect vectors will be have to be
// reallocated. We may want to avoid this if possible
mVisibleRegions.clear();
MOZ_ASSERT(mHwcLayerMap.IsEmpty());
if (!PrepareLayerList(aRoot,
mScreenRect,
gfxMatrix(),
aGLWorldTransform))
{
LOGD("Render aborted. Nothing was drawn to the screen");
return false;
}
if (!TryHwComposition()) {
LOGD("H/W Composition failed");
return false;
}
LOGD("Frame rendered");
return true;
}
void
nsRenderingContext::DrawLine(nscoord aX0, nscoord aY0,
nscoord aX1, nscoord aY1)
{
gfxPoint p0 = gfxPoint(FROM_TWIPS(aX0), FROM_TWIPS(aY0));
gfxPoint p1 = gfxPoint(FROM_TWIPS(aX1), FROM_TWIPS(aY1));
// we can't draw thick lines with gfx, so we always assume we want
// pixel-aligned lines if the rendering context is at 1.0 scale
gfxMatrix savedMatrix = mThebes->CurrentMatrix();
if (!savedMatrix.HasNonTranslation()) {
p0 = mThebes->UserToDevice(p0);
p1 = mThebes->UserToDevice(p1);
p0.Round();
p1.Round();
mThebes->SetMatrix(gfxMatrix());
mThebes->NewPath();
// snap straight lines
if (p0.x == p1.x) {
mThebes->Line(p0 + gfxPoint(0.5, 0),
p1 + gfxPoint(0.5, 0));
} else if (p0.y == p1.y) {
mThebes->Line(p0 + gfxPoint(0, 0.5),
p1 + gfxPoint(0, 0.5));
} else {
mThebes->Line(p0, p1);
}
mThebes->Stroke();
mThebes->SetMatrix(savedMatrix);
} else {
mThebes->NewPath();
mThebes->Line(p0, p1);
mThebes->Stroke();
}
}
gfxMatrix
nsSVGMarkerFrame::GetCanvasTM(PRUint32 aFor)
{
NS_ASSERTION(mMarkedFrame, "null nsSVGPathGeometry frame");
if (mInUse2) {
// We're going to be bailing drawing the marker, so return an identity.
return gfxMatrix();
}
nsSVGMarkerElement *content = static_cast<nsSVGMarkerElement*>(mContent);
mInUse2 = true;
gfxMatrix markedTM = mMarkedFrame->GetCanvasTM(aFor);
mInUse2 = false;
gfxMatrix markerTM = content->GetMarkerTransform(mStrokeWidth, mX, mY, mAutoAngle);
gfxMatrix viewBoxTM = content->GetViewBoxTransform();
return viewBoxTM * markerTM * markedTM;
}
void
SVGMotionSMILAnimationFunction::
RebuildPathAndVerticesFromMpathElem(nsSVGMpathElement* aMpathElem)
{
mPathSourceType = ePathSourceType_Mpath;
// Use the path that's the target of our chosen <mpath> child.
nsSVGPathElement* pathElem = aMpathElem->GetReferencedPath();
if (pathElem) {
const SVGPathData &path = pathElem->GetAnimPathSegList()->GetAnimValue();
// Path data must contain of at least one path segment (if the path data
// doesn't begin with a valid "M", then it's invalid).
if (path.Length()) {
bool ok =
path.GetDistancesFromOriginToEndsOfVisibleSegments(&mPathVertices);
if (ok && mPathVertices.Length()) {
mPath = pathElem->GetFlattenedPath(gfxMatrix());
}
}
}
}
PRBool
gfxSurfaceDrawable::Draw(gfxContext* aContext,
const gfxRect& aFillRect,
PRBool aRepeat,
const gfxPattern::GraphicsFilter& aFilter,
const gfxMatrix& aTransform)
{
nsRefPtr<gfxPattern> pattern = new gfxPattern(mSurface);
if (aRepeat) {
pattern->SetExtend(gfxPattern::EXTEND_REPEAT);
pattern->SetFilter(aFilter);
} else {
gfxPattern::GraphicsFilter filter = aFilter;
if (aContext->CurrentMatrix().HasOnlyIntegerTranslation() &&
aTransform.HasOnlyIntegerTranslation())
{
// If we only have integer translation, no special filtering needs to
// happen and we explicitly use FILTER_FAST. This is fast for some
// backends.
filter = gfxPattern::FILTER_FAST;
}
nsRefPtr<gfxASurface> currentTarget = aContext->CurrentSurface();
gfxMatrix deviceSpaceToImageSpace =
DeviceToImageTransform(aContext, aTransform);
PreparePatternForUntiledDrawing(pattern, deviceSpaceToImageSpace,
currentTarget, filter);
}
#ifdef MOZ_GFX_OPTIMIZE_MOBILE
if (!mozilla::supports_neon()) {
pattern->SetFilter(gfxPattern::FILTER_FAST);
}
#endif
pattern->SetMatrix(gfxMatrix(aTransform).Multiply(mTransform));
aContext->NewPath();
aContext->SetPattern(pattern);
aContext->Rectangle(aFillRect);
aContext->Fill();
return PR_TRUE;
}
nsSVGTransform
SVGTransformSMILData::ToSVGTransform() const
{
nsSVGTransform result;
switch (mTransformType) {
case SVG_TRANSFORM_MATRIX:
result.SetMatrix(gfxMatrix(mParams[0], mParams[1],
mParams[2], mParams[3],
mParams[4], mParams[5]));
break;
case SVG_TRANSFORM_TRANSLATE:
result.SetTranslate(mParams[0], mParams[1]);
break;
case SVG_TRANSFORM_SCALE:
result.SetScale(mParams[0], mParams[1]);
break;
case SVG_TRANSFORM_ROTATE:
result.SetRotate(mParams[0], mParams[1], mParams[2]);
break;
case SVG_TRANSFORM_SKEWX:
result.SetSkewX(mParams[0]);
break;
case SVG_TRANSFORM_SKEWY:
result.SetSkewY(mParams[0]);
break;
default:
NS_NOTREACHED("Unexpected transform type");
break;
}
return result;
}
/* virtual */ gfxMatrix
SVGUseElement::PrependLocalTransformsTo(const gfxMatrix &aMatrix,
TransformTypes aWhich) const
{
NS_ABORT_IF_FALSE(aWhich != eChildToUserSpace || aMatrix.IsIdentity(),
"Skipping eUserSpaceToParent transforms makes no sense");
// 'transform' attribute:
gfxMatrix fromUserSpace =
SVGUseElementBase::PrependLocalTransformsTo(aMatrix, aWhich);
if (aWhich == eUserSpaceToParent) {
return fromUserSpace;
}
// our 'x' and 'y' attributes:
float x, y;
const_cast<SVGUseElement*>(this)->GetAnimatedLengthValues(&x, &y, nullptr);
gfxMatrix toUserSpace = gfxMatrix().Translate(gfxPoint(x, y));
if (aWhich == eChildToUserSpace) {
return toUserSpace;
}
NS_ABORT_IF_FALSE(aWhich == eAllTransforms, "Unknown TransformTypes");
return toUserSpace * fromUserSpace;
}
already_AddRefed<nsISVGPoint>
SVGPathElement::GetPointAtLength(float distance, ErrorResult& rv)
{
nsRefPtr<gfxFlattenedPath> flat = GetFlattenedPath(gfxMatrix());
if (!flat) {
rv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
float totalLength = flat->GetLength();
if (mPathLength.IsExplicitlySet()) {
float pathLength = mPathLength.GetAnimValue();
if (pathLength <= 0) {
rv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
distance *= totalLength / pathLength;
}
distance = std::max(0.f, distance);
distance = std::min(totalLength, distance);
nsCOMPtr<nsISVGPoint> point = new DOMSVGPoint(flat->FindPoint(gfxPoint(distance, 0)));
return point.forget();
}
void
nsRenderingContext::SetClip(const nsIntRegion& aRegion)
{
// Region is in device coords, no transformation. This should
// only be called when there is no transform in place, when we we
// just start painting a widget. The region is set by the platform
// paint routine. Therefore, there is no option to intersect with
// an existing clip.
gfxMatrix mat = mThebes->CurrentMatrix();
mThebes->SetMatrix(gfxMatrix());
mThebes->ResetClip();
mThebes->NewPath();
nsIntRegionRectIterator iter(aRegion);
const nsIntRect* rect;
while ((rect = iter.Next())) {
mThebes->Rectangle(gfxRect(rect->x, rect->y, rect->width, rect->height),
true);
}
mThebes->Clip();
mThebes->SetMatrix(mat);
}
already_AddRefed<SVGMatrix> SVGMatrix::ScaleNonUniform(float scaleFactorX,
float scaleFactorY) {
RefPtr<SVGMatrix> matrix = new SVGMatrix(
gfxMatrix(GetMatrix()).PreScale(scaleFactorX, scaleFactorY));
return matrix.forget();
}
void
RectTriangles::addRect(GLfloat x0, GLfloat y0, GLfloat x1, GLfloat y1,
GLfloat tx0, GLfloat ty0, GLfloat tx1, GLfloat ty1,
bool flip_y /* = false */)
{
if (vertexCoords.IsEmpty() &&
x0 == 0.0f && y0 == 0.0f && x1 == 1.0f && y1 == 1.0f) {
mIsSimpleQuad = true;
if (flip_y) {
mTextureTransform = gfx3DMatrix::From2D(gfxMatrix(tx1 - tx0, 0, 0, ty0 - ty1, tx0, ty1));
} else {
mTextureTransform = gfx3DMatrix::From2D(gfxMatrix(tx1 - tx0, 0, 0, ty1 - ty0, tx0, ty0));
}
} else if (mIsSimpleQuad) {
mIsSimpleQuad = false;
mTextureTransform = gfx3DMatrix();
}
vert_coord v;
v.x = x0; v.y = y0;
vertexCoords.AppendElement(v);
v.x = x1; v.y = y0;
vertexCoords.AppendElement(v);
v.x = x0; v.y = y1;
vertexCoords.AppendElement(v);
v.x = x0; v.y = y1;
vertexCoords.AppendElement(v);
v.x = x1; v.y = y0;
vertexCoords.AppendElement(v);
v.x = x1; v.y = y1;
vertexCoords.AppendElement(v);
if (flip_y) {
tex_coord t;
t.u = tx0; t.v = ty1;
texCoords.AppendElement(t);
t.u = tx1; t.v = ty1;
texCoords.AppendElement(t);
t.u = tx0; t.v = ty0;
texCoords.AppendElement(t);
t.u = tx0; t.v = ty0;
texCoords.AppendElement(t);
t.u = tx1; t.v = ty1;
texCoords.AppendElement(t);
t.u = tx1; t.v = ty0;
texCoords.AppendElement(t);
} else {
tex_coord t;
t.u = tx0; t.v = ty0;
texCoords.AppendElement(t);
t.u = tx1; t.v = ty0;
texCoords.AppendElement(t);
t.u = tx0; t.v = ty1;
texCoords.AppendElement(t);
t.u = tx0; t.v = ty1;
texCoords.AppendElement(t);
t.u = tx1; t.v = ty0;
texCoords.AppendElement(t);
t.u = tx1; t.v = ty1;
texCoords.AppendElement(t);
}
}
already_AddRefed<SVGMatrix> SVGMatrix::FlipY() {
const gfxMatrix& mx = GetMatrix();
RefPtr<SVGMatrix> matrix = new SVGMatrix(
gfxMatrix(mx._11, mx._12, -mx._21, -mx._22, mx._31, mx._32));
return matrix.forget();
}
already_AddRefed<SVGMatrix> SVGMatrix::Rotate(float angle) {
RefPtr<SVGMatrix> matrix =
new SVGMatrix(gfxMatrix(GetMatrix()).PreRotate(angle * radPerDegree));
return matrix.forget();
}
gfxMatrix gfxContext::CurrentMatrix() const
{
cairo_matrix_t mat;
cairo_get_matrix(mCairo, &mat);
return gfxMatrix(mat);
}
already_AddRefed<gfxPattern>
nsSVGMaskFrame::ComputeMaskAlpha(nsRenderingContext *aContext,
nsIFrame* aParent,
const gfxMatrix &aMatrix,
float aOpacity)
{
// 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);
nsSVGMaskElement *mask = static_cast<nsSVGMaskElement*>(mContent);
uint16_t units =
mask->mEnumAttributes[nsSVGMaskElement::MASKUNITS].GetAnimValue();
gfxRect bbox;
if (units == nsIDOMSVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
bbox = nsSVGUtils::GetBBox(aParent);
}
gfxRect maskArea = nsSVGUtils::GetRelativeRect(units,
&mask->mLengthAttributes[nsSVGMaskElement::X], bbox, aParent);
gfxContext *gfx = aContext->ThebesContext();
// Get the clip extents in device space:
gfx->Save();
nsSVGUtils::SetClipRect(gfx, aMatrix, maskArea);
gfx->IdentityMatrix();
gfxRect clipExtents = gfx->GetClipExtents();
clipExtents.RoundOut();
gfx->Restore();
bool resultOverflows;
gfxIntSize surfaceSize =
nsSVGUtils::ConvertToSurfaceSize(gfxSize(clipExtents.Width(),
clipExtents.Height()),
&resultOverflows);
// 0 disables mask, < 0 is an error
if (surfaceSize.width <= 0 || surfaceSize.height <= 0)
return nullptr;
if (resultOverflows)
return nullptr;
nsRefPtr<gfxImageSurface> image =
new gfxImageSurface(surfaceSize, gfxASurface::ImageFormatARGB32);
if (!image || image->CairoStatus())
return nullptr;
// We would like to use gfxImageSurface::SetDeviceOffset() to position
// 'image'. However, we need to set the same matrix on the temporary context
// and pattern that we create below as is currently set on 'gfx'.
// Unfortunately, any device offset set by SetDeviceOffset() is affected by
// the transform passed to the SetMatrix() calls, so to avoid that we account
// for the device offset in the transform rather than use SetDeviceOffset().
gfxMatrix matrix =
gfx->CurrentMatrix() * gfxMatrix().Translate(-clipExtents.TopLeft());
nsRenderingContext tmpCtx;
tmpCtx.Init(this->PresContext()->DeviceContext(), image);
tmpCtx.ThebesContext()->SetMatrix(matrix);
mMaskParent = aParent;
if (mMaskParentMatrix) {
*mMaskParentMatrix = aMatrix;
} else {
mMaskParentMatrix = new gfxMatrix(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);
}
nsSVGUtils::PaintFrameWithEffects(&tmpCtx, nullptr, kid);
}
uint8_t *data = image->Data();
int32_t stride = image->Stride();
nsIntRect rect(0, 0, surfaceSize.width, surfaceSize.height);
nsSVGUtils::UnPremultiplyImageDataAlpha(data, stride, rect);
if (GetStyleSVG()->mColorInterpolation ==
NS_STYLE_COLOR_INTERPOLATION_LINEARRGB) {
nsSVGUtils::ConvertImageDataToLinearRGB(data, stride, rect);
}
for (int32_t y = 0; y < surfaceSize.height; y++)
for (int32_t x = 0; x < surfaceSize.width; x++) {
uint8_t *pixel = data + stride * y + 4 * x;
/* linearRGB -> intensity */
uint8_t alpha =
static_cast<uint8_t>
((pixel[GFX_ARGB32_OFFSET_R] * 0.2125 +
pixel[GFX_ARGB32_OFFSET_G] * 0.7154 +
pixel[GFX_ARGB32_OFFSET_B] * 0.0721) *
(pixel[GFX_ARGB32_OFFSET_A] / 255.0) * aOpacity);
memset(pixel, alpha, 4);
}
gfxPattern *retval = new gfxPattern(image);
retval->SetMatrix(matrix);
NS_IF_ADDREF(retval);
return retval;
}
already_AddRefed<SVGMatrix> SVGMatrix::Translate(float x, float y) {
RefPtr<SVGMatrix> matrix =
new SVGMatrix(gfxMatrix(GetMatrix()).PreTranslate(gfxPoint(x, y)));
return matrix.forget();
}
