2006-01-20 17:00:43 +00:00
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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2012-05-21 11:12:37 +00:00
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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2006-01-20 17:00:43 +00:00
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2012-03-26 11:58:59 +00:00
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// Main header first:
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2006-01-20 17:00:43 +00:00
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#include "nsSVGMaskFrame.h"
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2012-03-20 12:15:55 +00:00
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2012-03-26 11:58:59 +00:00
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// Keep others in (case-insensitive) order:
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2006-11-27 17:30:57 +00:00
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#include "gfxContext.h"
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2007-05-22 19:31:04 +00:00
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#include "gfxImageSurface.h"
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2012-03-26 11:58:59 +00:00
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#include "nsRenderingContext.h"
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#include "nsSVGEffects.h"
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2013-01-23 20:59:06 +00:00
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#include "mozilla/dom/SVGMaskElement.h"
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using namespace mozilla::dom;
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2006-01-20 17:00:43 +00:00
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//----------------------------------------------------------------------
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// Implementation
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nsIFrame*
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2009-01-19 18:31:34 +00:00
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NS_NewSVGMaskFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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2006-01-20 17:00:43 +00:00
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{
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2006-03-26 21:30:36 +00:00
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return new (aPresShell) nsSVGMaskFrame(aContext);
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2006-01-20 17:00:43 +00:00
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}
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2009-09-12 16:49:24 +00:00
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NS_IMPL_FRAMEARENA_HELPERS(nsSVGMaskFrame)
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2007-05-22 19:31:04 +00:00
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already_AddRefed<gfxPattern>
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2012-03-02 08:28:59 +00:00
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nsSVGMaskFrame::ComputeMaskAlpha(nsRenderingContext *aContext,
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2008-09-11 00:24:16 +00:00
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nsIFrame* aParent,
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2009-07-23 08:35:59 +00:00
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const gfxMatrix &aMatrix,
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2006-09-28 15:08:41 +00:00
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float aOpacity)
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2006-01-20 17:00:43 +00:00
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{
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2007-06-21 11:01:41 +00:00
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// If the flag is set when we get here, it means this mask frame
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// has already been used painting the current mask, and the document
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// has a mask reference loop.
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if (mInUse) {
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NS_WARNING("Mask loop detected!");
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2012-07-30 14:20:58 +00:00
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return nullptr;
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2007-06-21 11:01:41 +00:00
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}
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AutoMaskReferencer maskRef(this);
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2013-01-23 20:59:06 +00:00
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SVGMaskElement *mask = static_cast<SVGMaskElement*>(mContent);
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2006-01-20 17:00:43 +00:00
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2012-08-22 15:56:38 +00:00
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uint16_t units =
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2013-01-23 20:59:06 +00:00
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mask->mEnumAttributes[SVGMaskElement::MASKUNITS].GetAnimValue();
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2010-11-24 09:44:34 +00:00
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gfxRect bbox;
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2013-02-18 02:14:02 +00:00
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if (units == SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
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2010-11-24 09:44:34 +00:00
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bbox = nsSVGUtils::GetBBox(aParent);
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2006-01-20 17:00:43 +00:00
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}
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2010-11-24 09:44:34 +00:00
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gfxRect maskArea = nsSVGUtils::GetRelativeRect(units,
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2013-01-23 20:59:46 +00:00
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&mask->mLengthAttributes[SVGMaskElement::ATTR_X], bbox, aParent);
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2006-01-20 17:00:43 +00:00
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2012-03-02 08:28:59 +00:00
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gfxContext *gfx = aContext->ThebesContext();
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2006-01-20 17:00:43 +00:00
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2012-06-28 22:59:05 +00:00
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// Get the clip extents in device space:
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2010-11-24 09:44:34 +00:00
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gfx->Save();
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nsSVGUtils::SetClipRect(gfx, aMatrix, maskArea);
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2012-06-28 22:59:05 +00:00
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gfx->IdentityMatrix();
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2008-09-22 02:14:54 +00:00
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gfxRect clipExtents = gfx->GetClipExtents();
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2011-09-21 11:30:38 +00:00
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clipExtents.RoundOut();
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2006-11-27 17:30:57 +00:00
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gfx->Restore();
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2011-09-29 06:19:26 +00:00
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bool resultOverflows;
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2007-06-13 09:02:48 +00:00
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gfxIntSize surfaceSize =
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nsSVGUtils::ConvertToSurfaceSize(gfxSize(clipExtents.Width(),
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clipExtents.Height()),
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&resultOverflows);
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// 0 disables mask, < 0 is an error
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if (surfaceSize.width <= 0 || surfaceSize.height <= 0)
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2012-07-30 14:20:58 +00:00
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return nullptr;
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2007-06-13 09:02:48 +00:00
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if (resultOverflows)
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2012-07-30 14:20:58 +00:00
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return nullptr;
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2007-06-13 09:02:48 +00:00
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2007-05-22 19:31:04 +00:00
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nsRefPtr<gfxImageSurface> image =
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2007-06-13 09:02:48 +00:00
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new gfxImageSurface(surfaceSize, gfxASurface::ImageFormatARGB32);
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2007-07-17 09:24:27 +00:00
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if (!image || image->CairoStatus())
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2012-07-30 14:20:58 +00:00
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return nullptr;
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2012-06-28 22:59:05 +00:00
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// We would like to use gfxImageSurface::SetDeviceOffset() to position
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// 'image'. However, we need to set the same matrix on the temporary context
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// and pattern that we create below as is currently set on 'gfx'.
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// Unfortunately, any device offset set by SetDeviceOffset() is affected by
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// the transform passed to the SetMatrix() calls, so to avoid that we account
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// for the device offset in the transform rather than use SetDeviceOffset().
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gfxMatrix matrix =
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gfx->CurrentMatrix() * gfxMatrix().Translate(-clipExtents.TopLeft());
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2006-01-20 17:00:43 +00:00
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2012-03-02 08:28:59 +00:00
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nsRenderingContext tmpCtx;
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tmpCtx.Init(this->PresContext()->DeviceContext(), image);
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2012-06-28 22:59:05 +00:00
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tmpCtx.ThebesContext()->SetMatrix(matrix);
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2010-11-24 09:44:34 +00:00
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mMaskParent = aParent;
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2011-09-25 21:04:32 +00:00
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if (mMaskParentMatrix) {
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*mMaskParentMatrix = aMatrix;
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} else {
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mMaskParentMatrix = new gfxMatrix(aMatrix);
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}
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2010-11-24 09:44:34 +00:00
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for (nsIFrame* kid = mFrames.FirstChild(); kid;
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kid = kid->GetNextSibling()) {
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2010-12-24 09:30:01 +00:00
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// The CTM of each frame referencing us can be different
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nsISVGChildFrame* SVGFrame = do_QueryFrame(kid);
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if (SVGFrame) {
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2012-07-23 11:00:43 +00:00
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SVGFrame->NotifySVGChanged(nsISVGChildFrame::TRANSFORM_CHANGED);
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2010-12-24 09:30:01 +00:00
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}
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2012-07-30 14:20:58 +00:00
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nsSVGUtils::PaintFrameWithEffects(&tmpCtx, nullptr, kid);
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2010-11-24 09:44:34 +00:00
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}
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2006-09-28 15:08:41 +00:00
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2012-08-22 15:56:38 +00:00
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uint8_t *data = image->Data();
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int32_t stride = image->Stride();
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2013-02-28 09:50:38 +00:00
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nsIntRect rect(0, 0, surfaceSize.width, surfaceSize.height);
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2006-01-20 17:00:43 +00:00
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2013-02-16 21:51:02 +00:00
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if (StyleSVGReset()->mMaskType == NS_STYLE_MASK_TYPE_LUMINANCE) {
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2013-02-24 09:05:09 +00:00
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if (StyleSVG()->mColorInterpolation ==
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NS_STYLE_COLOR_INTERPOLATION_LINEARRGB) {
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2013-02-28 09:50:38 +00:00
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nsSVGUtils::ComputeLinearRGBLuminanceMask(data, stride, rect, aOpacity);
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} else {
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nsSVGUtils::ComputesRGBLuminanceMask(data, stride, rect, aOpacity);
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2006-01-20 17:00:43 +00:00
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}
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2012-12-21 00:15:22 +00:00
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} else {
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2013-02-28 09:50:38 +00:00
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nsSVGUtils::ComputeAlphaMask(data, stride, rect, aOpacity);
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2012-12-21 00:15:22 +00:00
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}
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2006-01-20 17:00:43 +00:00
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2013-04-22 11:15:59 +00:00
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nsRefPtr<gfxPattern> retval = new gfxPattern(image);
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2012-06-28 22:59:05 +00:00
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retval->SetMatrix(matrix);
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2013-04-22 11:15:59 +00:00
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return retval.forget();
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2006-01-20 17:00:43 +00:00
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}
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2011-09-19 12:59:52 +00:00
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NS_IMETHODIMP
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2012-08-22 15:56:38 +00:00
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nsSVGMaskFrame::AttributeChanged(int32_t aNameSpaceID,
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2011-09-19 12:59:52 +00:00
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nsIAtom* aAttribute,
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2012-08-22 15:56:38 +00:00
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int32_t aModType)
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2011-09-19 12:59:52 +00:00
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{
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if (aNameSpaceID == kNameSpaceID_None &&
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(aAttribute == nsGkAtoms::x ||
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aAttribute == nsGkAtoms::y ||
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aAttribute == nsGkAtoms::width ||
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aAttribute == nsGkAtoms::height||
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aAttribute == nsGkAtoms::maskUnits ||
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aAttribute == nsGkAtoms::maskContentUnits)) {
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2012-06-23 14:19:00 +00:00
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nsSVGEffects::InvalidateDirectRenderingObservers(this);
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2011-09-19 12:59:52 +00:00
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}
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return nsSVGMaskFrameBase::AttributeChanged(aNameSpaceID,
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aAttribute, aModType);
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}
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2009-01-19 18:31:34 +00:00
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#ifdef DEBUG
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2013-03-20 01:47:48 +00:00
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void
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2009-01-19 18:31:34 +00:00
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nsSVGMaskFrame::Init(nsIContent* aContent,
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nsIFrame* aParent,
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nsIFrame* aPrevInFlow)
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{
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2013-01-08 03:22:41 +00:00
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NS_ASSERTION(aContent->IsSVG(nsGkAtoms::mask),
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"Content is not an SVG mask");
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2009-01-19 18:31:34 +00:00
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2013-03-20 01:47:48 +00:00
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nsSVGMaskFrameBase::Init(aContent, aParent, aPrevInFlow);
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2009-01-19 18:31:34 +00:00
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}
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#endif /* DEBUG */
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2006-01-20 17:00:43 +00:00
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nsIAtom *
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nsSVGMaskFrame::GetType() const
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{
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2006-12-26 17:47:52 +00:00
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return nsGkAtoms::svgMaskFrame;
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2006-01-20 17:00:43 +00:00
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}
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2009-04-29 04:31:34 +00:00
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gfxMatrix
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2012-08-22 15:56:38 +00:00
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nsSVGMaskFrame::GetCanvasTM(uint32_t aFor)
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2006-01-20 17:00:43 +00:00
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{
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2006-06-01 15:31:15 +00:00
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NS_ASSERTION(mMaskParentMatrix, "null parent matrix");
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2006-01-20 17:00:43 +00:00
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2013-01-23 20:59:06 +00:00
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SVGMaskElement *mask = static_cast<SVGMaskElement*>(mContent);
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2007-04-26 08:36:16 +00:00
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2011-09-25 21:04:32 +00:00
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return nsSVGUtils::AdjustMatrixForUnits(
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mMaskParentMatrix ? *mMaskParentMatrix : gfxMatrix(),
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2013-01-23 20:59:06 +00:00
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&mask->mEnumAttributes[SVGMaskElement::MASKCONTENTUNITS],
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2011-09-25 21:04:32 +00:00
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mMaskParent);
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2006-01-20 17:00:43 +00:00
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}
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2006-06-28 12:32:26 +00:00
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