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#include "SkDevice.h"
#include "SkDraw.h"
#include "SkMetaData.h"
#include "SkRect.h"
SkDeviceFactory::~SkDeviceFactory() {}
SkDevice::SkDevice(SkCanvas* canvas) : fCanvas(canvas), fMetaData(NULL) {
fOrigin.setZero();
}
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);
}
}
}
}
SkDevice::~SkDevice() {
delete fMetaData;
}
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));
}
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