return SkPackARGB32(0xFF, r, g, b);
}
+// similar to SkPixel16ToPixel32, but returns SkColor instead of SkPMColor
+static inline SkColor SkPixel16ToColor(U16CPU src) {
+ SkASSERT(src == SkToU16(src));
+
+ unsigned r = SkPacked16ToR32(src);
+ unsigned g = SkPacked16ToG32(src);
+ unsigned b = SkPacked16ToB32(src);
+
+ SkASSERT((r >> (8 - SK_R16_BITS)) == SkGetPackedR16(src));
+ SkASSERT((g >> (8 - SK_G16_BITS)) == SkGetPackedG16(src));
+ SkASSERT((b >> (8 - SK_B16_BITS)) == SkGetPackedB16(src));
+
+ return SkColorSetRGB(r, g, b);
+}
+
///////////////////////////////////////////////////////////////////////////////
typedef uint16_t SkPMColor16;
#include "SkCanvas.h"
#include "SkUtils.h"
+static void test_pathregion() {
+ SkPath path;
+ SkRegion region;
+ path.moveTo(25071800.f, -141823808.f);
+ path.lineTo(25075500.f, -141824000.f);
+ path.lineTo(25075400.f, -141827712.f);
+ path.lineTo(25071810.f, -141827600.f);
+ path.close();
+
+ SkIRect bounds;
+ path.getBounds().round(&bounds);
+ SkRegion clip(bounds);
+ bool result = region.setPath(path, clip); // <-- !! DOWN !!
+ SkDebugf("----- result %d\n", result);
+}
+
static SkBitmap make_bitmap() {
SkBitmap bm;
SkColorTable* ctable = new SkColorTable(256);
SkBitmap fBM32;
public:
DitherBitmapView() {
+ test_pathregion();
fBM8 = make_bitmap();
fBM8.copyTo(&fBM32, SkBitmap::kARGB_8888_Config);
}
--- /dev/null
+#include "SampleCode.h"
+#include "SkColorPriv.h"
+#include "SkShader.h"
+#include "SkView.h"
+#include "SkCanvas.h"
+#include "SkUtils.h"
+
+static SkBitmap make_bitmap() {
+ SkBitmap bm;
+ const int N = 1;
+ SkColorTable* ctable = new SkColorTable(N);
+
+ SkPMColor* c = ctable->lockColors();
+ for (int i = 0; i < N; i++) {
+ c[i] = SkPackARGB32(0x80, 0x80, 0, 0);
+ }
+ ctable->unlockColors(true);
+ bm.setConfig(SkBitmap::kIndex8_Config, 1, 1);
+ bm.allocPixels(ctable);
+ ctable->unref();
+
+ bm.lockPixels();
+ for (int y = 0; y < bm.height(); y++) {
+ uint8_t* p = bm.getAddr8(0, y);
+ for (int x = 0; x < bm.width(); x++) {
+ p[x] = 0;
+ }
+ }
+ bm.unlockPixels();
+ return bm;
+}
+
+class TinyBitmapView : public SkView {
+ SkBitmap fBM;
+public:
+ TinyBitmapView() {
+ fBM = make_bitmap();
+ }
+
+protected:
+ // overrides from SkEventSink
+ virtual bool onQuery(SkEvent* evt) {
+ if (SampleCode::TitleQ(*evt)) {
+ SampleCode::TitleR(evt, "TinyBitmap");
+ return true;
+ }
+ return this->INHERITED::onQuery(evt);
+ }
+
+ void drawBG(SkCanvas* canvas) {
+ canvas->drawColor(0xFFDDDDDD);
+ }
+
+ static void setBitmapOpaque(SkBitmap* bm, bool isOpaque) {
+ SkAutoLockPixels alp(*bm); // needed for ctable
+ bm->setIsOpaque(isOpaque);
+ SkColorTable* ctable = bm->getColorTable();
+ if (ctable) {
+ ctable->setIsOpaque(isOpaque);
+ }
+ }
+
+ virtual void onDraw(SkCanvas* canvas) {
+ drawBG(canvas);
+
+ SkShader* s = SkShader::CreateBitmapShader(fBM, SkShader::kRepeat_TileMode,
+ SkShader::kMirror_TileMode);
+ SkPaint paint;
+ paint.setShader(s)->unref();
+ canvas->drawPaint(paint);
+ }
+
+private:
+ typedef SkView INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static SkView* MyFactory() { return new TinyBitmapView; }
+static SkViewRegister reg(MyFactory);
+
///////////////////////////////////////////////////////////////////////////////
+#include "SkUnPreMultiply.h"
+#include "SkColorShader.h"
+
+// returns true and set color if the bitmap can be drawn as a single color
+// (for efficiency)
+static bool canUseColorShader(const SkBitmap& bm, SkColor* color) {
+ if (1 != bm.width() || 1 != bm.height()) {
+ return false;
+ }
+
+ SkAutoLockPixels alp(bm);
+ if (!bm.readyToDraw()) {
+ return false;
+ }
+
+ switch (bm.config()) {
+ case SkBitmap::kARGB_8888_Config:
+ *color = SkUnPreMultiply::PMColorToColor(*bm.getAddr32(0, 0));
+ return true;
+ case SkBitmap::kRGB_565_Config:
+ *color = SkPixel16ToColor(*bm.getAddr16(0, 0));
+ return true;
+ case SkBitmap::kIndex8_Config:
+ *color = SkUnPreMultiply::PMColorToColor(bm.getIndex8Color(0, 0));
+ return true;
+ default: // just skip the other configs for now
+ break;
+ }
+ return false;
+}
+
#include "SkTemplatesPriv.h"
SkShader* SkShader::CreateBitmapShader(const SkBitmap& src,
TileMode tmx, TileMode tmy,
void* storage, size_t storageSize) {
SkShader* shader;
- SK_PLACEMENT_NEW_ARGS(shader, SkBitmapProcShader, storage,
- storageSize, (src, tmx, tmy));
+ SkColor color;
+ if (canUseColorShader(src, &color)) {
+ SK_PLACEMENT_NEW_ARGS(shader, SkColorShader, storage, storageSize,
+ (color));
+ } else {
+ SK_PLACEMENT_NEW_ARGS(shader, SkBitmapProcShader, storage,
+ storageSize, (src, tmx, tmy));
+ }
return shader;
}