+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
#include "SkSurface.h"
#include "SkImagePriv.h"
#include "SkCanvas.h"
return asSB(this)->onDraw(canvas, x, y, paint);
}
-///////////////////////////////////////////////////////////////////////////////
-
-static const size_t kIgnoreRowBytesValue = (size_t)~0;
-
-class SkSurface_Raster : public SkSurface_Base {
-public:
- static bool Valid(const SkImage::Info&, SkColorSpace*, size_t rb = kIgnoreRowBytesValue);
-
- SkSurface_Raster(const SkImage::Info&, SkColorSpace*, void*, size_t rb);
- SkSurface_Raster(const SkImage::Info&, SkColorSpace*, SkPixelRef*, size_t rb);
-
- virtual SkCanvas* onNewCanvas() SK_OVERRIDE;
- virtual SkSurface* onNewSurface(const SkImage::Info&, SkColorSpace*) SK_OVERRIDE;
- virtual SkImage* onNewImageShapshot() SK_OVERRIDE;
- virtual void onDraw(SkCanvas*, SkScalar x, SkScalar y,
- const SkPaint*) SK_OVERRIDE;
-
-private:
- SkBitmap fBitmap;
- bool fWeOwnThePixels;
-
- typedef SkSurface_Base INHERITED;
-};
-
-bool SkSurface_Raster::Valid(const SkImage::Info& info, SkColorSpace* cs,
- size_t rowBytes) {
- static size_t kMaxTotalSize = (1 << 31) - 1;
-
- bool isOpaque;
- SkBitmap::Config config = SkImageInfoToBitmapConfig(info, &isOpaque);
-
- int shift = 0;
- switch (config) {
- case SkBitmap::kA8_Config:
- shift = 0;
- break;
- case SkBitmap::kRGB_565_Config:
- shift = 1;
- break;
- case SkBitmap::kARGB_8888_Config:
- shift = 2;
- break;
- default:
- return false;
- }
-
- // TODO: examine colorspace
-
- if (kIgnoreRowBytesValue == rowBytes) {
- return true;
- }
-
- uint64_t minRB = (uint64_t)info.fWidth << shift;
- if (minRB > rowBytes) {
- return false;
- }
-
- size_t alignedRowBytes = rowBytes >> shift << shift;
- if (alignedRowBytes != rowBytes) {
- return false;
- }
-
- uint64_t size = (uint64_t)info.fHeight * rowBytes;
- if (size > kMaxTotalSize) {
- return false;
- }
-
- return true;
-}
-
-SkSurface_Raster::SkSurface_Raster(const SkImage::Info& info, SkColorSpace* cs,
- void* pixels, size_t rb)
- : INHERITED(info.fWidth, info.fHeight) {
- bool isOpaque;
- SkBitmap::Config config = SkImageInfoToBitmapConfig(info, &isOpaque);
-
- fBitmap.setConfig(config, info.fWidth, info.fHeight, rb);
- fBitmap.setPixels(pixels);
- fBitmap.setIsOpaque(isOpaque);
- fWeOwnThePixels = false;
-}
-
-SkSurface_Raster::SkSurface_Raster(const SkImage::Info& info, SkColorSpace* cs,
- SkPixelRef* pr, size_t rb)
- : INHERITED(info.fWidth, info.fHeight) {
- bool isOpaque;
- SkBitmap::Config config = SkImageInfoToBitmapConfig(info, &isOpaque);
-
- fBitmap.setConfig(config, info.fWidth, info.fHeight, rb);
- fBitmap.setPixelRef(pr);
- fBitmap.setIsOpaque(isOpaque);
- fWeOwnThePixels = true;
-
- if (!isOpaque) {
- fBitmap.eraseColor(0);
- }
-}
-
-SkCanvas* SkSurface_Raster::onNewCanvas() {
- return SkNEW_ARGS(SkCanvas, (fBitmap));
-}
-
-SkSurface* SkSurface_Raster::onNewSurface(const SkImage::Info& info,
- SkColorSpace* cs) {
- return SkSurface::NewRaster(info, cs);
-}
-
-SkImage* SkSurface_Raster::onNewImageShapshot() {
- // if we don't own the pixels, we need to make a deep-copy
- // if we do, we need to perform a copy-on-write the next time
- // we draw to this bitmap from our canvas...
- return SkNewImageFromBitmap(fBitmap);
-}
-
-void SkSurface_Raster::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y,
- const SkPaint* paint) {
- canvas->drawBitmap(fBitmap, x, y, paint);
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-#include "SkPicture.h"
-
-/**
- * What does it mean to ask for more than one canvas from a picture?
- * How do we return an Image and then "continue" recording?
- */
-class SkSurface_Picture : public SkSurface_Base {
-public:
- SkSurface_Picture(int width, int height);
- virtual ~SkSurface_Picture();
-
- virtual SkCanvas* onNewCanvas() SK_OVERRIDE;
- virtual SkSurface* onNewSurface(const SkImage::Info&, SkColorSpace*) SK_OVERRIDE;
- virtual SkImage* onNewImageShapshot() SK_OVERRIDE;
- virtual void onDraw(SkCanvas*, SkScalar x, SkScalar y,
- const SkPaint*) SK_OVERRIDE;
-
-private:
- SkPicture* fPicture;
- SkPicture* fRecordingPicture;
-
- typedef SkSurface_Base INHERITED;
-};
-
-SkSurface_Picture::SkSurface_Picture(int width, int height) : INHERITED(width, height) {
- fPicture = NULL;
-}
-
-SkSurface_Picture::~SkSurface_Picture() {
- SkSafeUnref(fPicture);
-}
-
-SkCanvas* SkSurface_Picture::onNewCanvas() {
- if (!fPicture) {
- fPicture = SkNEW(SkPicture);
- }
- SkCanvas* canvas = fPicture->beginRecording(this->width(), this->height());
- canvas->ref(); // our caller will call unref()
- return canvas;
-}
-
-SkSurface* SkSurface_Picture::onNewSurface(const SkImage::Info& info, SkColorSpace*) {
- return SkSurface::NewPicture(info.fWidth, info.fHeight);
-}
-
-SkImage* SkSurface_Picture::onNewImageShapshot() {
- if (fPicture) {
- return SkNewImageFromPicture(fPicture);
- } else {
- SkImage::Info info;
- info.fWidth = info.fHeight = 0;
- info.fColorType = SkImage::kPMColor_ColorType;
- info.fAlphaType = SkImage::kOpaque_AlphaType;
- return SkImage::NewRasterCopy(info, NULL, NULL, 0);
- }
-}
-
-void SkSurface_Picture::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y,
- const SkPaint* paint) {
- if (!fPicture) {
- return;
- }
- SkImagePrivDrawPicture(canvas, fPicture, x, y, paint);
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-#include "SkMallocPixelRef.h"
-
-SkSurface* SkSurface::NewRasterDirect(const SkImage::Info& info,
- SkColorSpace* cs,
- void* pixels, size_t rowBytes) {
- if (!SkSurface_Raster::Valid(info, cs, rowBytes)) {
- return NULL;
- }
- if (NULL == pixels) {
- return NULL;
- }
-
- return SkNEW_ARGS(SkSurface_Raster, (info, cs, pixels, rowBytes));
-}
-
-SkSurface* SkSurface::NewRaster(const SkImage::Info& info, SkColorSpace* cs) {
- if (!SkSurface_Raster::Valid(info, cs)) {
- return NULL;
- }
-
- size_t kMaxTotalSize = (1 << 31) - 1;
- size_t rowBytes = SkImageMinRowBytes(info);
- uint64_t size64 = (uint64_t)info.fHeight * rowBytes;
- if (size64 > kMaxTotalSize) {
- return NULL;
- }
-
- size_t size = (size_t)size64;
- void* pixels = sk_malloc_throw(size);
- if (NULL == pixels) {
- return NULL;
- }
-
- SkAutoTUnref<SkPixelRef> pr(SkNEW_ARGS(SkMallocPixelRef, (pixels, size, NULL, true)));
- return SkNEW_ARGS(SkSurface_Raster, (info, cs, pr, rowBytes));
-}
-
-SkSurface* SkSurface::NewPicture(int width, int height) {
- if ((width | height) < 0) {
- return NULL;
- }
-
- return SkNEW_ARGS(SkSurface_Picture, (width, height));
-}
-
--- /dev/null
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkSurface_Base_DEFINED
+#define SkSurface_Base_DEFINED
+
+#include "SkSurface.h"
+
+class SkSurface_Base : public SkSurface {
+public:
+ SkSurface_Base(int width, int height) : INHERITED(width, height) {}
+
+ virtual SkCanvas* onNewCanvas() = 0;
+ virtual SkSurface* onNewSurface(const SkImage::Info&, SkColorSpace*) = 0;
+ virtual SkImage* onNewImageShapshot() = 0;
+
+ /**
+ * Default implementation:
+ *
+ * image = this->newImageSnapshot();
+ * if (image) {
+ * image->draw(canvas, ...);
+ * image->unref();
+ * }
+ */
+ virtual void onDraw(SkCanvas*, SkScalar x, SkScalar y, const SkPaint*);
+
+private:
+ typedef SkSurface INHERITED;
+};
+
+#endif
+
--- /dev/null
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkSurface_Base.h"
+#include "SkCanvas.h"
+#include "SkImagePriv.h"
+#include "SkPicture.h"
+
+/**
+ * What does it mean to ask for more than one canvas from a picture?
+ * How do we return an Image and then "continue" recording?
+ */
+class SkSurface_Picture : public SkSurface_Base {
+public:
+ SkSurface_Picture(int width, int height);
+ virtual ~SkSurface_Picture();
+
+ virtual SkCanvas* onNewCanvas() SK_OVERRIDE;
+ virtual SkSurface* onNewSurface(const SkImage::Info&, SkColorSpace*) SK_OVERRIDE;
+ virtual SkImage* onNewImageShapshot() SK_OVERRIDE;
+ virtual void onDraw(SkCanvas*, SkScalar x, SkScalar y,
+ const SkPaint*) SK_OVERRIDE;
+
+private:
+ SkPicture* fPicture;
+ SkPicture* fRecordingPicture;
+
+ typedef SkSurface_Base INHERITED;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+SkSurface_Picture::SkSurface_Picture(int width, int height) : INHERITED(width, height) {
+ fPicture = NULL;
+}
+
+SkSurface_Picture::~SkSurface_Picture() {
+ SkSafeUnref(fPicture);
+}
+
+SkCanvas* SkSurface_Picture::onNewCanvas() {
+ if (!fPicture) {
+ fPicture = SkNEW(SkPicture);
+ }
+ SkCanvas* canvas = fPicture->beginRecording(this->width(), this->height());
+ canvas->ref(); // our caller will call unref()
+ return canvas;
+}
+
+SkSurface* SkSurface_Picture::onNewSurface(const SkImage::Info& info, SkColorSpace*) {
+ return SkSurface::NewPicture(info.fWidth, info.fHeight);
+}
+
+SkImage* SkSurface_Picture::onNewImageShapshot() {
+ if (fPicture) {
+ return SkNewImageFromPicture(fPicture);
+ } else {
+ SkImage::Info info;
+ info.fWidth = info.fHeight = 0;
+ info.fColorType = SkImage::kPMColor_ColorType;
+ info.fAlphaType = SkImage::kOpaque_AlphaType;
+ return SkImage::NewRasterCopy(info, NULL, NULL, 0);
+ }
+}
+
+void SkSurface_Picture::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y,
+ const SkPaint* paint) {
+ if (!fPicture) {
+ return;
+ }
+ SkImagePrivDrawPicture(canvas, fPicture, x, y, paint);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+
+SkSurface* SkSurface::NewPicture(int width, int height) {
+ if ((width | height) < 0) {
+ return NULL;
+ }
+
+ return SkNEW_ARGS(SkSurface_Picture, (width, height));
+}
+
--- /dev/null
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkSurface_Base.h"
+#include "SkImagePriv.h"
+#include "SkCanvas.h"
+#include "SkMallocPixelRef.h"
+
+static const size_t kIgnoreRowBytesValue = (size_t)~0;
+
+class SkSurface_Raster : public SkSurface_Base {
+public:
+ static bool Valid(const SkImage::Info&, SkColorSpace*, size_t rb = kIgnoreRowBytesValue);
+
+ SkSurface_Raster(const SkImage::Info&, SkColorSpace*, void*, size_t rb);
+ SkSurface_Raster(const SkImage::Info&, SkColorSpace*, SkPixelRef*, size_t rb);
+
+ virtual SkCanvas* onNewCanvas() SK_OVERRIDE;
+ virtual SkSurface* onNewSurface(const SkImage::Info&, SkColorSpace*) SK_OVERRIDE;
+ virtual SkImage* onNewImageShapshot() SK_OVERRIDE;
+ virtual void onDraw(SkCanvas*, SkScalar x, SkScalar y,
+ const SkPaint*) SK_OVERRIDE;
+
+private:
+ SkBitmap fBitmap;
+ bool fWeOwnThePixels;
+
+ typedef SkSurface_Base INHERITED;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+bool SkSurface_Raster::Valid(const SkImage::Info& info, SkColorSpace* cs,
+ size_t rowBytes) {
+ static const size_t kMaxTotalSize = SK_MaxS32;
+
+ bool isOpaque;
+ SkBitmap::Config config = SkImageInfoToBitmapConfig(info, &isOpaque);
+
+ int shift = 0;
+ switch (config) {
+ case SkBitmap::kA8_Config:
+ shift = 0;
+ break;
+ case SkBitmap::kRGB_565_Config:
+ shift = 1;
+ break;
+ case SkBitmap::kARGB_8888_Config:
+ shift = 2;
+ break;
+ default:
+ return false;
+ }
+
+ // TODO: examine colorspace
+
+ if (kIgnoreRowBytesValue == rowBytes) {
+ return true;
+ }
+
+ uint64_t minRB = (uint64_t)info.fWidth << shift;
+ if (minRB > rowBytes) {
+ return false;
+ }
+
+ size_t alignedRowBytes = rowBytes >> shift << shift;
+ if (alignedRowBytes != rowBytes) {
+ return false;
+ }
+
+ uint64_t size = (uint64_t)info.fHeight * rowBytes;
+ if (size > kMaxTotalSize) {
+ return false;
+ }
+
+ return true;
+}
+
+SkSurface_Raster::SkSurface_Raster(const SkImage::Info& info, SkColorSpace* cs,
+ void* pixels, size_t rb)
+ : INHERITED(info.fWidth, info.fHeight) {
+ bool isOpaque;
+ SkBitmap::Config config = SkImageInfoToBitmapConfig(info, &isOpaque);
+
+ fBitmap.setConfig(config, info.fWidth, info.fHeight, rb);
+ fBitmap.setPixels(pixels);
+ fBitmap.setIsOpaque(isOpaque);
+ fWeOwnThePixels = false;
+}
+
+SkSurface_Raster::SkSurface_Raster(const SkImage::Info& info, SkColorSpace* cs,
+ SkPixelRef* pr, size_t rb)
+ : INHERITED(info.fWidth, info.fHeight) {
+ bool isOpaque;
+ SkBitmap::Config config = SkImageInfoToBitmapConfig(info, &isOpaque);
+
+ fBitmap.setConfig(config, info.fWidth, info.fHeight, rb);
+ fBitmap.setPixelRef(pr);
+ fBitmap.setIsOpaque(isOpaque);
+ fWeOwnThePixels = true;
+
+ if (!isOpaque) {
+ fBitmap.eraseColor(0);
+ }
+}
+
+SkCanvas* SkSurface_Raster::onNewCanvas() {
+ return SkNEW_ARGS(SkCanvas, (fBitmap));
+}
+
+SkSurface* SkSurface_Raster::onNewSurface(const SkImage::Info& info,
+ SkColorSpace* cs) {
+ return SkSurface::NewRaster(info, cs);
+}
+
+SkImage* SkSurface_Raster::onNewImageShapshot() {
+ // if we don't own the pixels, we need to make a deep-copy
+ // if we do, we need to perform a copy-on-write the next time
+ // we draw to this bitmap from our canvas...
+ return SkNewImageFromBitmap(fBitmap);
+}
+
+void SkSurface_Raster::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y,
+ const SkPaint* paint) {
+ canvas->drawBitmap(fBitmap, x, y, paint);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+SkSurface* SkSurface::NewRasterDirect(const SkImage::Info& info,
+ SkColorSpace* cs,
+ void* pixels, size_t rowBytes) {
+ if (!SkSurface_Raster::Valid(info, cs, rowBytes)) {
+ return NULL;
+ }
+ if (NULL == pixels) {
+ return NULL;
+ }
+
+ return SkNEW_ARGS(SkSurface_Raster, (info, cs, pixels, rowBytes));
+}
+
+SkSurface* SkSurface::NewRaster(const SkImage::Info& info, SkColorSpace* cs) {
+ if (!SkSurface_Raster::Valid(info, cs)) {
+ return NULL;
+ }
+
+ static const size_t kMaxTotalSize = SK_MaxS32;
+ size_t rowBytes = SkImageMinRowBytes(info);
+ uint64_t size64 = (uint64_t)info.fHeight * rowBytes;
+ if (size64 > kMaxTotalSize) {
+ return NULL;
+ }
+
+ size_t size = (size_t)size64;
+ void* pixels = sk_malloc_throw(size);
+ if (NULL == pixels) {
+ return NULL;
+ }
+
+ SkAutoTUnref<SkPixelRef> pr(SkNEW_ARGS(SkMallocPixelRef, (pixels, size, NULL, true)));
+ return SkNEW_ARGS(SkSurface_Raster, (info, cs, pr, rowBytes));
+}
+
projects / platform / upstream / libSkiaSharp.git / commitdiff