| #include "SkDevice.h" |
| #include "SkDraw.h" |
| #include "SkMetaData.h" |
| #include "SkRect.h" |
| |
| //#define TRACE_FACTORY_LIFETIME |
| |
| #ifdef TRACE_FACTORY_LIFETIME |
| static int gFactoryCounter; |
| #endif |
| |
| SkDeviceFactory::SkDeviceFactory() { |
| #ifdef TRACE_FACTORY_LIFETIME |
| SkDebugf("+++ factory index %d\n", gFactoryCounter); |
| ++gFactoryCounter; |
| #endif |
| } |
| |
| SkDeviceFactory::~SkDeviceFactory() { |
| #ifdef TRACE_FACTORY_LIFETIME |
| --gFactoryCounter; |
| SkDebugf("--- factory index %d\n", gFactoryCounter); |
| #endif |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkDevice::SkDevice(SkCanvas* canvas) : fCanvas(canvas), fMetaData(NULL) { |
| fOrigin.setZero(); |
| fCachedDeviceFactory = NULL; |
| } |
| |
| SkDevice::SkDevice(SkCanvas* canvas, const SkBitmap& bitmap, bool isForLayer) |
| : fCanvas(canvas), fBitmap(bitmap), fMetaData(NULL) { |
| fOrigin.setZero(); |
| // auto-allocate if we're for offscreen drawing |
| if (isForLayer) { |
| if (NULL == fBitmap.getPixels() && NULL == fBitmap.pixelRef()) { |
| fBitmap.allocPixels(); |
| if (!fBitmap.isOpaque()) { |
| fBitmap.eraseColor(0); |
| } |
| } |
| } |
| fCachedDeviceFactory = NULL; |
| } |
| |
| SkDevice::~SkDevice() { |
| delete fMetaData; |
| SkSafeUnref(fCachedDeviceFactory); |
| } |
| |
| SkDeviceFactory* SkDevice::onNewDeviceFactory() { |
| return SkNEW(SkRasterDeviceFactory); |
| } |
| |
| SkDeviceFactory* SkDevice::getDeviceFactory() { |
| if (NULL == fCachedDeviceFactory) { |
| fCachedDeviceFactory = this->onNewDeviceFactory(); |
| } |
| return fCachedDeviceFactory; |
| } |
| |
| SkMetaData& SkDevice::getMetaData() { |
| // metadata users are rare, so we lazily allocate it. If that changes we |
| // can decide to just make it a field in the device (rather than a ptr) |
| if (NULL == fMetaData) { |
| fMetaData = new SkMetaData; |
| } |
| return *fMetaData; |
| } |
| |
| void SkDevice::lockPixels() { |
| fBitmap.lockPixels(); |
| } |
| |
| void SkDevice::unlockPixels() { |
| fBitmap.unlockPixels(); |
| } |
| |
| const SkBitmap& SkDevice::accessBitmap(bool changePixels) { |
| this->onAccessBitmap(&fBitmap); |
| if (changePixels) { |
| fBitmap.notifyPixelsChanged(); |
| } |
| return fBitmap; |
| } |
| |
| void SkDevice::getBounds(SkIRect* bounds) const { |
| if (bounds) { |
| bounds->set(0, 0, fBitmap.width(), fBitmap.height()); |
| } |
| } |
| |
| bool SkDevice::intersects(const SkIRect& r, SkIRect* sect) const { |
| SkIRect bounds; |
| |
| this->getBounds(&bounds); |
| return sect ? sect->intersect(r, bounds) : SkIRect::Intersects(r, bounds); |
| } |
| |
| void SkDevice::clear(SkColor color) { |
| fBitmap.eraseColor(color); |
| } |
| |
| void SkDevice::onAccessBitmap(SkBitmap* bitmap) {} |
| |
| void SkDevice::setMatrixClip(const SkMatrix&, const SkRegion&, |
| const SkClipStack&) {} |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkDevice::readPixels(const SkIRect& srcRect, SkBitmap* bitmap) { |
| const SkBitmap& src = this->accessBitmap(false); |
| |
| SkIRect bounds; |
| bounds.set(0, 0, src.width(), src.height()); |
| if (!bounds.intersect(srcRect)) { |
| return false; |
| } |
| |
| SkBitmap subset; |
| if (!src.extractSubset(&subset, bounds)) { |
| return false; |
| } |
| |
| SkBitmap tmp; |
| if (!subset.copyTo(&tmp, SkBitmap::kARGB_8888_Config)) { |
| return false; |
| } |
| |
| tmp.swap(*bitmap); |
| return true; |
| } |
| |
| void SkDevice::writePixels(const SkBitmap& bitmap, int x, int y) { |
| SkPaint paint; |
| paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| |
| SkCanvas canvas(this); |
| canvas.drawSprite(bitmap, x, y, &paint); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| void SkDevice::drawPaint(const SkDraw& draw, const SkPaint& paint) { |
| draw.drawPaint(paint); |
| } |
| |
| void SkDevice::drawPoints(const SkDraw& draw, SkCanvas::PointMode mode, size_t count, |
| const SkPoint pts[], const SkPaint& paint) { |
| draw.drawPoints(mode, count, pts, paint); |
| } |
| |
| void SkDevice::drawRect(const SkDraw& draw, const SkRect& r, |
| const SkPaint& paint) { |
| draw.drawRect(r, paint); |
| } |
| |
| void SkDevice::drawPath(const SkDraw& draw, const SkPath& path, |
| const SkPaint& paint, const SkMatrix* prePathMatrix, |
| bool pathIsMutable) { |
| draw.drawPath(path, paint, prePathMatrix, pathIsMutable); |
| } |
| |
| void SkDevice::drawBitmap(const SkDraw& draw, const SkBitmap& bitmap, |
| const SkIRect* srcRect, |
| const SkMatrix& matrix, const SkPaint& paint) { |
| SkBitmap tmp; // storage if we need a subset of bitmap |
| const SkBitmap* bitmapPtr = &bitmap; |
| |
| if (srcRect) { |
| if (!bitmap.extractSubset(&tmp, *srcRect)) { |
| return; // extraction failed |
| } |
| bitmapPtr = &tmp; |
| } |
| draw.drawBitmap(*bitmapPtr, matrix, paint); |
| } |
| |
| void SkDevice::drawSprite(const SkDraw& draw, const SkBitmap& bitmap, |
| int x, int y, const SkPaint& paint) { |
| draw.drawSprite(bitmap, x, y, paint); |
| } |
| |
| void SkDevice::drawText(const SkDraw& draw, const void* text, size_t len, |
| SkScalar x, SkScalar y, const SkPaint& paint) { |
| draw.drawText((const char*)text, len, x, y, paint); |
| } |
| |
| void SkDevice::drawPosText(const SkDraw& draw, const void* text, size_t len, |
| const SkScalar xpos[], SkScalar y, |
| int scalarsPerPos, const SkPaint& paint) { |
| draw.drawPosText((const char*)text, len, xpos, y, scalarsPerPos, paint); |
| } |
| |
| void SkDevice::drawTextOnPath(const SkDraw& draw, const void* text, |
| size_t len, const SkPath& path, |
| const SkMatrix* matrix, |
| const SkPaint& paint) { |
| draw.drawTextOnPath((const char*)text, len, path, matrix, paint); |
| } |
| |
| #ifdef ANDROID |
| void SkDevice::drawPosTextOnPath(const SkDraw& draw, const void* text, size_t len, |
| const SkPoint pos[], const SkPaint& paint, |
| const SkPath& path, const SkMatrix* matrix) { |
| draw.drawPosTextOnPath((const char*)text, len, pos, paint, path, matrix); |
| } |
| #endif |
| |
| void SkDevice::drawVertices(const SkDraw& draw, SkCanvas::VertexMode vmode, |
| int vertexCount, |
| const SkPoint verts[], const SkPoint textures[], |
| const SkColor colors[], SkXfermode* xmode, |
| const uint16_t indices[], int indexCount, |
| const SkPaint& paint) { |
| draw.drawVertices(vmode, vertexCount, verts, textures, colors, xmode, |
| indices, indexCount, paint); |
| } |
| |
| void SkDevice::drawDevice(const SkDraw& draw, SkDevice* device, |
| int x, int y, const SkPaint& paint) { |
| draw.drawSprite(device->accessBitmap(false), x, y, paint); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkDevice::filterTextFlags(const SkPaint& paint, TextFlags* flags) { |
| if (!paint.isLCDRenderText()) { |
| // we're cool with the paint as is |
| return false; |
| } |
| |
| if (SkBitmap::kARGB_8888_Config != fBitmap.config() || |
| paint.getShader() || |
| paint.getXfermode() || // unless its srcover |
| paint.getMaskFilter() || |
| paint.getRasterizer() || |
| paint.getColorFilter() || |
| paint.getPathEffect() || |
| paint.isFakeBoldText() || |
| paint.getStyle() != SkPaint::kFill_Style) { |
| // turn off lcd |
| flags->fFlags = paint.getFlags() & ~SkPaint::kLCDRenderText_Flag; |
| flags->fHinting = paint.getHinting(); |
| return true; |
| } |
| // we're cool with the paint as is |
| return false; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkDevice* SkRasterDeviceFactory::newDevice(SkCanvas* canvas, |
| SkBitmap::Config config, int width, |
| int height, bool isOpaque, |
| bool isForLayer) { |
| SkBitmap bitmap; |
| bitmap.setConfig(config, width, height); |
| bitmap.setIsOpaque(isOpaque); |
| |
| return SkNEW_ARGS(SkDevice, (canvas, bitmap, isForLayer)); |
| } |