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Diffstat (limited to 'WebCore/platform/graphics/skia/SkiaUtils.cpp')
| -rw-r--r-- | WebCore/platform/graphics/skia/SkiaUtils.cpp | 257 |
1 files changed, 0 insertions, 257 deletions
diff --git a/WebCore/platform/graphics/skia/SkiaUtils.cpp b/WebCore/platform/graphics/skia/SkiaUtils.cpp deleted file mode 100644 index da83793..0000000 --- a/WebCore/platform/graphics/skia/SkiaUtils.cpp +++ /dev/null @@ -1,257 +0,0 @@ -/* - * Copyright (c) 2006,2007,2008, Google Inc. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "config.h" - -#include "SkiaUtils.h" - -#include "ImageBuffer.h" -#include "SharedBuffer.h" -#include "SkCanvas.h" -#include "SkColorPriv.h" -#include "SkMatrix.h" -#include "SkRegion.h" -#include "SkUnPreMultiply.h" - -namespace WebCore { - -#if PLATFORM(ANDROID) -static const struct CompositOpToSkiaMode { - uint8_t mCompositOp; - uint8_t mMode; -} gMapCompositOpsToSkiaModes[] = { - { CompositeClear, SkXfermode::kClear_Mode }, - { CompositeCopy, SkXfermode::kSrc_Mode }, - { CompositeSourceOver, SkXfermode::kSrcOver_Mode }, - { CompositeSourceIn, SkXfermode::kSrcIn_Mode }, - { CompositeSourceOut, SkXfermode::kSrcOut_Mode }, - { CompositeSourceAtop, SkXfermode::kSrcATop_Mode }, - { CompositeDestinationOver, SkXfermode::kDstOver_Mode }, - { CompositeDestinationIn, SkXfermode::kDstIn_Mode }, - { CompositeDestinationOut, SkXfermode::kDstOut_Mode }, - { CompositeDestinationAtop, SkXfermode::kDstATop_Mode }, - { CompositeXOR, SkXfermode::kXor_Mode }, - // need more details on the composite modes to be sure these are right - { CompositePlusDarker, SkXfermode::kDarken_Mode }, - { CompositeHighlight, SkXfermode::kSrcOver_Mode }, // TODO - { CompositePlusLighter, SkXfermode::kPlus_Mode } -}; - -SkXfermode::Mode WebCoreCompositeToSkiaCOmposite(CompositeOperator op) -{ - const CompositOpToSkiaMode* table = gMapCompositOpsToSkiaModes; - - for (unsigned i = 0; i < SK_ARRAY_COUNT(gMapCompositOpsToSkiaModes); i++) { - if (table[i].mCompositOp == op) - return (SkXfermode::Mode)table[i].mMode; - } - - SkDEBUGF(("GraphicsContext::setCompositeOperation uknown CompositeOperator %d\n", op)); - return SkXfermode::kSrcOver_Mode; // fall-back -} - -#endif - -static const struct CompositOpToXfermodeMode { - uint8_t mCompositOp; - uint8_t m_xfermodeMode; -} gMapCompositOpsToXfermodeModes[] = { - { CompositeClear, SkXfermode::kClear_Mode }, - { CompositeCopy, SkXfermode::kSrc_Mode }, - { CompositeSourceOver, SkXfermode::kSrcOver_Mode }, - { CompositeSourceIn, SkXfermode::kSrcIn_Mode }, - { CompositeSourceOut, SkXfermode::kSrcOut_Mode }, - { CompositeSourceAtop, SkXfermode::kSrcATop_Mode }, - { CompositeDestinationOver, SkXfermode::kDstOver_Mode }, - { CompositeDestinationIn, SkXfermode::kDstIn_Mode }, - { CompositeDestinationOut, SkXfermode::kDstOut_Mode }, - { CompositeDestinationAtop, SkXfermode::kDstATop_Mode }, - { CompositeXOR, SkXfermode::kXor_Mode }, - { CompositePlusDarker, SkXfermode::kDarken_Mode }, - { CompositeHighlight, SkXfermode::kSrcOver_Mode }, // TODO - { CompositePlusLighter, SkXfermode::kPlus_Mode } -}; - -SkXfermode::Mode WebCoreCompositeToSkiaComposite(CompositeOperator op) -{ - const CompositOpToXfermodeMode* table = gMapCompositOpsToXfermodeModes; - - for (unsigned i = 0; i < SK_ARRAY_COUNT(gMapCompositOpsToXfermodeModes); i++) { - if (table[i].mCompositOp == op) - return (SkXfermode::Mode)table[i].m_xfermodeMode; - } - - SkDEBUGF(("GraphicsContext::setPlatformCompositeOperation unknown CompositeOperator %d\n", op)); - return SkXfermode::kSrcOver_Mode; // fall-back -} - -#if PLATFORM(ANDROID) -Color SkPMColorToWebCoreColor(SkPMColor pm) -{ - SkColor c = SkUnPreMultiply::PMColorToColor(pm); - // need the cast to find the right constructor - return WebCore::Color((int)SkColorGetR(c), (int)SkColorGetG(c), - (int)SkColorGetB(c), (int)SkColorGetA(c)); -} -#else -static U8CPU InvScaleByte(U8CPU component, uint32_t scale) -{ - SkASSERT(component == (uint8_t)component); - return (component * scale + 0x8000) >> 16; -} - -SkColor SkPMColorToColor(SkPMColor pm) -{ - if (!pm) - return 0; - unsigned a = SkGetPackedA32(pm); - if (!a) { - // A zero alpha value when there are non-zero R, G, or B channels is an - // invalid premultiplied color (since all channels should have been - // multiplied by 0 if a=0). - SkASSERT(false); - // In production, return 0 to protect against division by zero. - return 0; - } - - uint32_t scale = (255 << 16) / a; - - return SkColorSetARGB(a, - InvScaleByte(SkGetPackedR32(pm), scale), - InvScaleByte(SkGetPackedG32(pm), scale), - InvScaleByte(SkGetPackedB32(pm), scale)); -} - -Color SkPMColorToWebCoreColor(SkPMColor pm) -{ - return SkPMColorToColor(pm); -} -#endif - -void IntersectRectAndRegion(const SkRegion& region, const SkRect& srcRect, SkRect* destRect) { - // The cliperator requires an int rect, so we round out. - SkIRect srcRectRounded; - srcRect.roundOut(&srcRectRounded); - - // The Cliperator will iterate over a bunch of rects where our transformed - // rect and the clipping region (which may be non-square) overlap. - SkRegion::Cliperator cliperator(region, srcRectRounded); - if (cliperator.done()) { - destRect->setEmpty(); - return; - } - - // Get the union of all visible rects in the clip that overlap our bitmap. - SkIRect currentVisibleRect = cliperator.rect(); - cliperator.next(); - while (!cliperator.done()) { - currentVisibleRect.join(cliperator.rect()); - cliperator.next(); - } - - destRect->set(currentVisibleRect); -} - -void ClipRectToCanvas(const SkCanvas& canvas, const SkRect& srcRect, SkRect* destRect) { - // Translate into the canvas' coordinate space. This is where the clipping - // region applies. - SkRect transformedSrc; - canvas.getTotalMatrix().mapRect(&transformedSrc, srcRect); - - // Do the intersection. - SkRect transformedDest; - IntersectRectAndRegion(canvas.getTotalClip(), transformedSrc, &transformedDest); - - // Now transform it back into world space. - SkMatrix inverseTransform; - canvas.getTotalMatrix().invert(&inverseTransform); - inverseTransform.mapRect(destRect, transformedDest); -} - -bool SkPathContainsPoint(SkPath* originalPath, const FloatPoint& point, SkPath::FillType ft) -{ - SkRegion rgn; - SkRegion clip; - - SkPath::FillType originalFillType = originalPath->getFillType(); - - const SkPath* path = originalPath; - SkPath scaledPath; - int scale = 1; - - SkRect bounds = originalPath->getBounds(); - - // We can immediately return false if the point is outside the bounding - // rect. We don't use bounds.contains() here, since it would exclude - // points on the right and bottom edges of the bounding rect, and we want - // to include them. - SkScalar fX = SkFloatToScalar(point.x()); - SkScalar fY = SkFloatToScalar(point.y()); - if (fX < bounds.fLeft || fX > bounds.fRight || fY < bounds.fTop || fY > bounds.fBottom) - return false; - - originalPath->setFillType(ft); - - // Skia has trouble with coordinates close to the max signed 16-bit values - // If we have those, we need to scale. - // - // TODO: remove this code once Skia is patched to work properly with large - // values - const SkScalar kMaxCoordinate = SkIntToScalar(1<<15); - SkScalar biggestCoord = std::max(std::max(std::max(bounds.fRight, bounds.fBottom), -bounds.fLeft), -bounds.fTop); - - if (biggestCoord > kMaxCoordinate) { - scale = SkScalarCeil(SkScalarDiv(biggestCoord, kMaxCoordinate)); - - SkMatrix m; - m.setScale(SkScalarInvert(SkIntToScalar(scale)), SkScalarInvert(SkIntToScalar(scale))); - originalPath->transform(m, &scaledPath); - path = &scaledPath; - } - - int x = static_cast<int>(floorf(point.x() / scale)); - int y = static_cast<int>(floorf(point.y() / scale)); - clip.setRect(x - 1, y - 1, x + 1, y + 1); - - bool contains = rgn.setPath(*path, clip); - - originalPath->setFillType(originalFillType); - return contains; -} - -GraphicsContext* scratchContext() -{ - static ImageBuffer* scratch = ImageBuffer::create(IntSize(1, 1)).leakPtr(); - // We don't bother checking for failure creating the ImageBuffer, since our - // ImageBuffer initializer won't fail. - return scratch->context(); -} - -} // namespace WebCore |