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| 1 /* | |
| 2 * Copyright (c) 2008, Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 #include "config.h" | |
| 32 #include "platform/graphics/skia/NativeImageSkia.h" | |
| 33 | |
| 34 #include "platform/PlatformInstrumentation.h" | |
| 35 #include "platform/RuntimeEnabledFeatures.h" | |
| 36 #include "platform/TraceEvent.h" | |
| 37 #include "platform/geometry/FloatRect.h" | |
| 38 #include "platform/graphics/DeferredImageDecoder.h" | |
| 39 #include "platform/graphics/GraphicsContext.h" | |
| 40 #include "platform/graphics/skia/SkiaUtils.h" | |
| 41 #include "platform/transforms/AffineTransform.h" | |
| 42 #include "third_party/skia/include/core/SkCanvas.h" | |
| 43 #include "third_party/skia/include/core/SkColor.h" | |
| 44 #include "third_party/skia/include/core/SkImageInfo.h" | |
| 45 #include "third_party/skia/include/core/SkMatrix.h" | |
| 46 #include "third_party/skia/include/core/SkPaint.h" | |
| 47 #include "third_party/skia/include/core/SkRect.h" | |
| 48 #include "third_party/skia/include/core/SkScalar.h" | |
| 49 #include "third_party/skia/include/core/SkShader.h" | |
| 50 | |
| 51 namespace blink { | |
| 52 | |
| 53 void NativeImageSkia::draw( | |
| 54 GraphicsContext* context, | |
| 55 const SkRect& srcRect, | |
| 56 const SkRect& destRect, | |
| 57 SkXfermode::Mode op) const | |
| 58 { | |
| 59 TRACE_EVENT0("skia", "NativeImageSkia::draw"); | |
| 60 | |
| 61 bool isLazyDecoded = DeferredImageDecoder::isLazyDecoded(bitmap()); | |
| 62 bool isOpaque = bitmap().isOpaque(); | |
| 63 | |
| 64 { | |
| 65 SkPaint paint; | |
| 66 int initialSaveCount = context->preparePaintForDrawRectToRect(&paint, sr
cRect, destRect, op, !isOpaque, isLazyDecoded, isDataComplete()); | |
| 67 // We want to filter it if we decided to do interpolation above, or if | |
| 68 // there is something interesting going on with the matrix (like a rotat
ion). | |
| 69 // Note: for serialization, we will want to subset the bitmap first so w
e | |
| 70 // don't send extra pixels. | |
| 71 context->drawBitmapRect(bitmap(), &srcRect, destRect, &paint); | |
| 72 context->canvas()->restoreToCount(initialSaveCount); | |
| 73 } | |
| 74 | |
| 75 if (isLazyDecoded) | |
| 76 PlatformInstrumentation::didDrawLazyPixelRef(bitmap().getGenerationID())
; | |
| 77 } | |
| 78 | |
| 79 static SkBitmap createBitmapWithSpace(const SkBitmap& bitmap, int spaceWidth, in
t spaceHeight) | |
| 80 { | |
| 81 SkImageInfo info = bitmap.info(); | |
| 82 info = SkImageInfo::Make(info.width() + spaceWidth, info.height() + spaceHei
ght, info.colorType(), kPremul_SkAlphaType); | |
| 83 | |
| 84 SkBitmap result; | |
| 85 result.allocPixels(info); | |
| 86 result.eraseColor(SK_ColorTRANSPARENT); | |
| 87 bitmap.copyPixelsTo(reinterpret_cast<uint8_t*>(result.getPixels()), result.r
owBytes() * result.height(), result.rowBytes()); | |
| 88 | |
| 89 return result; | |
| 90 } | |
| 91 | |
| 92 void NativeImageSkia::drawPattern( | |
| 93 GraphicsContext* context, | |
| 94 const FloatRect& floatSrcRect, | |
| 95 const FloatSize& scale, | |
| 96 const FloatPoint& phase, | |
| 97 SkXfermode::Mode compositeOp, | |
| 98 const FloatRect& destRect, | |
| 99 const IntSize& repeatSpacing) const | |
| 100 { | |
| 101 FloatRect normSrcRect = floatSrcRect; | |
| 102 normSrcRect.intersect(FloatRect(0, 0, bitmap().width(), bitmap().height())); | |
| 103 if (destRect.isEmpty() || normSrcRect.isEmpty()) | |
| 104 return; // nothing to draw | |
| 105 | |
| 106 SkMatrix localMatrix; | |
| 107 // We also need to translate it such that the origin of the pattern is the | |
| 108 // origin of the destination rect, which is what WebKit expects. Skia uses | |
| 109 // the coordinate system origin as the base for the pattern. If WebKit wants | |
| 110 // a shifted image, it will shift it from there using the localMatrix. | |
| 111 const float adjustedX = phase.x() + normSrcRect.x() * scale.width(); | |
| 112 const float adjustedY = phase.y() + normSrcRect.y() * scale.height(); | |
| 113 localMatrix.setTranslate(SkFloatToScalar(adjustedX), SkFloatToScalar(adjuste
dY)); | |
| 114 | |
| 115 // Because no resizing occurred, the shader transform should be | |
| 116 // set to the pattern's transform, which just includes scale. | |
| 117 localMatrix.preScale(scale.width(), scale.height()); | |
| 118 | |
| 119 SkBitmap bitmapToPaint; | |
| 120 bitmap().extractSubset(&bitmapToPaint, enclosingIntRect(normSrcRect)); | |
| 121 if (!repeatSpacing.isZero()) { | |
| 122 SkScalar ctmScaleX = 1.0; | |
| 123 SkScalar ctmScaleY = 1.0; | |
| 124 | |
| 125 if (!RuntimeEnabledFeatures::slimmingPaintEnabled()) { | |
| 126 AffineTransform ctm = context->getCTM(); | |
| 127 ctmScaleX = ctm.xScale(); | |
| 128 ctmScaleY = ctm.yScale(); | |
| 129 } | |
| 130 | |
| 131 bitmapToPaint = createBitmapWithSpace( | |
| 132 bitmapToPaint, | |
| 133 repeatSpacing.width() * ctmScaleX / scale.width(), | |
| 134 repeatSpacing.height() * ctmScaleY / scale.height()); | |
| 135 } | |
| 136 RefPtr<SkShader> shader = adoptRef(SkShader::CreateBitmapShader(bitmapToPain
t, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, &localMatrix)); | |
| 137 | |
| 138 bool isLazyDecoded = DeferredImageDecoder::isLazyDecoded(bitmap()); | |
| 139 { | |
| 140 SkPaint paint; | |
| 141 int initialSaveCount = context->preparePaintForDrawRectToRect(&paint, fl
oatSrcRect, | |
| 142 destRect, compositeOp, !bitmap().isOpaque(), isLazyDecoded, isDataCo
mplete()); | |
| 143 paint.setShader(shader.get()); | |
| 144 context->drawRect(destRect, paint); | |
| 145 context->canvas()->restoreToCount(initialSaveCount); | |
| 146 } | |
| 147 | |
| 148 if (isLazyDecoded) | |
| 149 PlatformInstrumentation::didDrawLazyPixelRef(bitmap().getGenerationID())
; | |
| 150 } | |
| 151 | |
| 152 } // namespace blink | |
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Chromium Code Reviews
Issue 1001703003:
Take NativeImageSkia out behind the woodshed. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk