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Implement SkiaSystem::loadSurface() and SkiaSurface::drawSurface()

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This commit is contained in:
David Capello 2015-03-25 15:45:37 -03:00
parent d816b18277
commit c0697dfcef
4 changed files with 98 additions and 19 deletions
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11
src/she/skia/she.cpp
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@ -22,17 +22,6 @@
#error There is no Window implementation
#endif
// #include "SkApplication.h"
// #include "SkCanvas.h"
// #include "SkEvent.h"
// #include "SkGradientShader.h"
#include "SkBitmap.h"
// #include "SkGraphics.h"
#include "SkImageInfo.h"
// #include "SkGr.h"
#include <queue>
#include "she/skia/skia_surface.h"
#include "she/skia/skia_event_queue.h"
#include "she/skia/skia_window.h"

2
src/she/skia/skia_event_queue.h
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@ -4,6 +4,8 @@
// This file is released under the terms of the MIT license.
// Read LICENSE.txt for more information.
#include <queue>
namespace she {
class SkiaEventQueue : public EventQueue {

70
src/she/skia/skia_surface.h
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@ -6,6 +6,11 @@
#include "she/common/locked_surface.h"
#include "SkBitmap.h"
#include "SkCanvas.h"
#include "SkColorPriv.h"
#include "SkImageInfo.h"
namespace she {
class SkiaSurface : public NonDisposableSurface
@ -16,12 +21,12 @@ public:
void create(int width, int height) {
m_bitmap.tryAllocPixels(
SkImageInfo::MakeUnknown(width, height));
SkImageInfo::MakeN32Premul(width, height));
}
void createRgba(int width, int height) {
m_bitmap.tryAllocPixels(
SkImageInfo::MakeN32(width, height, kUnpremul_SkAlphaType));
SkImageInfo::MakeN32Premul(width, height));
}
// Surface impl
@ -82,6 +87,61 @@ public:
}
void getFormat(SurfaceFormatData* formatData) const override {
formatData->format = kRgbaSurfaceFormat;
formatData->bitsPerPixel = 8*m_bitmap.bytesPerPixel();
switch (m_bitmap.colorType()) {
case kRGB_565_SkColorType:
formatData->redShift = SK_R16_SHIFT;
formatData->greenShift = SK_G16_SHIFT;
formatData->blueShift = SK_B16_SHIFT;
formatData->alphaShift = 0;
formatData->redMask = SK_R16_MASK;
formatData->greenMask = SK_G16_MASK;
formatData->blueMask = SK_B16_MASK;
formatData->alphaMask = 0;
break;
case kARGB_4444_SkColorType:
formatData->redShift = SK_R4444_SHIFT;
formatData->greenShift = SK_G4444_SHIFT;
formatData->blueShift = SK_B4444_SHIFT;
formatData->alphaShift = SK_A4444_SHIFT;
formatData->redMask = (15 << SK_R4444_SHIFT);
formatData->greenMask = (15 << SK_G4444_SHIFT);
formatData->blueMask = (15 << SK_B4444_SHIFT);
formatData->alphaMask = (15 << SK_A4444_SHIFT);
break;
case kRGBA_8888_SkColorType:
formatData->redShift = SK_RGBA_R32_SHIFT;
formatData->greenShift = SK_RGBA_G32_SHIFT;
formatData->blueShift = SK_RGBA_B32_SHIFT;
formatData->alphaShift = SK_RGBA_A32_SHIFT;
formatData->redMask = ((1 << SK_RGBA_R32_SHIFT) - 1);
formatData->greenMask = ((1 << SK_RGBA_G32_SHIFT) - 1);
formatData->blueMask = ((1 << SK_RGBA_B32_SHIFT) - 1);
formatData->alphaMask = ((1 << SK_RGBA_A32_SHIFT) - 1);
break;
case kBGRA_8888_SkColorType:
formatData->redShift = SK_BGRA_R32_SHIFT;
formatData->greenShift = SK_BGRA_G32_SHIFT;
formatData->blueShift = SK_BGRA_B32_SHIFT;
formatData->alphaShift = SK_BGRA_A32_SHIFT;
formatData->redMask = ((1 << SK_BGRA_R32_SHIFT) - 1);
formatData->greenMask = ((1 << SK_BGRA_G32_SHIFT) - 1);
formatData->blueMask = ((1 << SK_BGRA_B32_SHIFT) - 1);
formatData->alphaMask = ((1 << SK_BGRA_A32_SHIFT) - 1);
break;
default:
formatData->redShift = 0;
formatData->greenShift = 0;
formatData->blueShift = 0;
formatData->alphaShift = 0;
formatData->redMask = 0;
formatData->greenMask = 0;
formatData->blueMask = 0;
formatData->alphaMask = 0;
break;
}
}
gfx::Color getPixel(int x, int y) const override {
@ -115,9 +175,15 @@ public:
}
void drawSurface(const LockedSurface* src, int dstx, int dsty) override {
SkCanvas canvas(m_bitmap);
canvas.drawBitmap(((SkiaSurface*)src)->m_bitmap,
SkIntToScalar(dstx), SkIntToScalar(dsty), nullptr);
}
void drawRgbaSurface(const LockedSurface* src, int dstx, int dsty) override {
SkCanvas canvas(m_bitmap);
canvas.drawBitmap(((SkiaSurface*)src)->m_bitmap,
SkIntToScalar(dstx), SkIntToScalar(dsty), nullptr);
}
SkBitmap& bitmap() {

34
src/she/skia/skia_system.h
View File

@ -4,6 +4,12 @@
// This file is released under the terms of the MIT license.
// Read LICENSE.txt for more information.
#include "base/file_handle.h"
#include "SkImageDecoder.h"
#include "SkPixelRef.h"
#include "SkStream.h"
namespace she {
class SkiaSystem : public CommonSystem {
@ -50,15 +56,31 @@ public:
}
Surface* loadSurface(const char* filename) override {
SkiaSurface* sur = new SkiaSurface;
sur->create(32, 32);
return sur;
base::FileHandle fp(base::open_file_with_exception(filename, "rb"));
SkAutoTDelete<SkStreamAsset> stream(SkNEW_ARGS(SkFILEStream, (fp, SkFILEStream::kCallerRetains_Ownership)));
SkAutoTDelete<SkImageDecoder> decoder(SkImageDecoder::Factory(stream));
decoder->setRequireUnpremultipliedColors(true);
if (decoder) {
stream->rewind();
SkBitmap bm;
SkImageDecoder::Result res = decoder->decode(stream, &bm,
kN32_SkColorType, SkImageDecoder::kDecodePixels_Mode);
if (res == SkImageDecoder::kSuccess) {
bm.pixelRef()->setURI(filename);
SkiaSurface* sur = new SkiaSurface();
sur->bitmap().swap(bm);
return sur;
}
}
return nullptr;
}
Surface* loadRgbaSurface(const char* filename) override {
SkiaSurface* sur = new SkiaSurface;
sur->create(32, 32);
return sur;
return loadSurface(filename);
}
private: