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e0fd75b5ab
This caused us to lose our gn check certification. :( Turns out gn check was just ignoring all the header paths it didn't understand and so gn check passing for sky wasn't meaning much. I tried to straighten out some of the mess in this CL, but its going to take several more rounds of massaging before gn check passes again. On the bright side (almost) all of our headers are absolute now. Turns out my script (attached to the bug) didn't notice ../ includes but I'll fix that in the next patch. R=abarth@chromium.org BUG=435361 Review URL: https://codereview.chromium.org/746023002
120 lines
4.9 KiB
C++
120 lines
4.9 KiB
C++
/*
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* Copyright (C) 2006, 2007, 2008 Apple Computer, Inc. All rights reserved.
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* Copyright (C) 2008 Eric Seidel <eric@webkit.org>
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* Copyright (C) 2013 Google, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "sky/engine/config.h"
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#include "sky/engine/platform/graphics/Pattern.h"
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#include "sky/engine/platform/graphics/skia/SkiaUtils.h"
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#include "third_party/skia/include/core/SkCanvas.h"
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#include "third_party/skia/include/core/SkColorShader.h"
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#include "v8/include/v8.h"
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namespace blink {
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PassRefPtr<Pattern> Pattern::createBitmapPattern(PassRefPtr<Image> tileImage, RepeatMode repeatMode)
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{
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return adoptRef(new Pattern(tileImage, repeatMode));
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}
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Pattern::Pattern(PassRefPtr<Image> image, RepeatMode repeatMode)
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: m_repeatMode(repeatMode)
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, m_externalMemoryAllocated(0)
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{
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if (image) {
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m_tileImage = image->nativeImageForCurrentFrame();
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}
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}
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Pattern::~Pattern()
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{
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if (m_externalMemoryAllocated)
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v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(-m_externalMemoryAllocated);
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}
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SkShader* Pattern::shader()
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{
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if (m_pattern)
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return m_pattern.get();
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SkMatrix localMatrix = affineTransformToSkMatrix(m_patternSpaceTransformation);
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// If we don't have a bitmap, return a transparent shader.
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if (!m_tileImage) {
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m_pattern = adoptRef(new SkColorShader(SK_ColorTRANSPARENT));
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} else if (m_repeatMode == RepeatModeXY) {
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m_pattern = adoptRef(SkShader::CreateBitmapShader(m_tileImage->bitmap(),
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SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, &localMatrix));
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} else {
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// Skia does not have a "draw the tile only once" option. Clamp_TileMode
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// repeats the last line of the image after drawing one tile. To avoid
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// filling the space with arbitrary pixels, this workaround forces the
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// image to have a line of transparent pixels on the "repeated" edge(s),
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// thus causing extra space to be transparent filled.
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SkShader::TileMode tileModeX = (m_repeatMode & RepeatModeX)
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? SkShader::kRepeat_TileMode
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: SkShader::kClamp_TileMode;
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SkShader::TileMode tileModeY = (m_repeatMode & RepeatModeY)
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? SkShader::kRepeat_TileMode
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: SkShader::kClamp_TileMode;
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int expandW = (m_repeatMode & RepeatModeX) ? 0 : 1;
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int expandH = (m_repeatMode & RepeatModeY) ? 0 : 1;
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// Create a transparent bitmap 1 pixel wider and/or taller than the
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// original, then copy the orignal into it.
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// FIXME: Is there a better way to pad (not scale) an image in skia?
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SkImageInfo info = m_tileImage->bitmap().info();
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info.fWidth += expandW;
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info.fHeight += expandH;
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// we explicitly require non-opaquness, since we are going to add a transparent strip.
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info.fAlphaType = kPremul_SkAlphaType;
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SkBitmap bm2;
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bm2.allocPixels(info);
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bm2.eraseARGB(0x00, 0x00, 0x00, 0x00);
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SkCanvas canvas(bm2);
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canvas.drawBitmap(m_tileImage->bitmap(), 0, 0);
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bm2.setImmutable();
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m_pattern = adoptRef(SkShader::CreateBitmapShader(bm2, tileModeX, tileModeY, &localMatrix));
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// Clamp to int, since that's what the adjust function takes.
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m_externalMemoryAllocated = static_cast<int>(std::min(static_cast<size_t>(INT_MAX), bm2.getSafeSize()));
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v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(m_externalMemoryAllocated);
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}
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return m_pattern.get();
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}
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void Pattern::setPatternSpaceTransform(const AffineTransform& patternSpaceTransformation)
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{
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if (patternSpaceTransformation == m_patternSpaceTransformation)
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return;
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m_patternSpaceTransformation = patternSpaceTransformation;
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m_pattern.clear();
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}
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} // namespace blink
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