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Unified Diff: gm/tablecolorfilter.cpp

Issue 969673002: add compose-colorfilter (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Created 5 years, 10 months ago
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Index: gm/tablecolorfilter.cpp
diff --git a/gm/tablecolorfilter.cpp b/gm/tablecolorfilter.cpp
index a49859bf8f0bfeb313ebc98f65705103d21d4c8d..2acb15c677c3d50e2b58fbe2c5172666419c92db 100644
--- a/gm/tablecolorfilter.cpp
+++ b/gm/tablecolorfilter.cpp
@@ -11,6 +11,15 @@
#include "SkGradientShader.h"
#include "SkTableColorFilter.h"
+static SkShader* make_shader0(int w, int h) {
+ SkPoint pts[] = { {0, 0}, {SkIntToScalar(w), SkIntToScalar(h)} };
+ SkColor colors[] = {
+ SK_ColorBLACK, SK_ColorGREEN, SK_ColorCYAN,
+ SK_ColorRED, 0, SK_ColorBLUE, SK_ColorWHITE
+ };
+ return SkGradientShader::CreateLinear(pts, colors, NULL, SK_ARRAY_COUNT(colors),
+ SkShader::kClamp_TileMode);
+}
static void make_bm0(SkBitmap* bm) {
int W = 120;
int H = 120;
@@ -19,34 +28,29 @@ static void make_bm0(SkBitmap* bm) {
SkCanvas canvas(*bm);
SkPaint paint;
- SkPoint pts[] = { {0, 0}, {SkIntToScalar(W), SkIntToScalar(H)} };
+ paint.setShader(make_shader0(W, H))->unref();
+ canvas.drawPaint(paint);
+}
+static SkShader* make_shader1(int w, int h) {
+ SkScalar cx = SkIntToScalar(w)/2;
+ SkScalar cy = SkIntToScalar(h)/2;
SkColor colors[] = {
- SK_ColorBLACK, SK_ColorGREEN, SK_ColorCYAN,
- SK_ColorRED, 0, SK_ColorBLUE, SK_ColorWHITE
+ SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE,
};
- SkShader* s = SkGradientShader::CreateLinear(pts, colors, NULL, SK_ARRAY_COUNT(colors),
- SkShader::kClamp_TileMode);
- paint.setShader(s)->unref();
- canvas.drawPaint(paint);
+ return SkGradientShader::CreateRadial(SkPoint::Make(cx, cy), cx, colors, NULL,
+ SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode);
}
static void make_bm1(SkBitmap* bm) {
int W = 120;
int H = 120;
+ SkScalar cx = SkIntToScalar(W)/2;
+ SkScalar cy = SkIntToScalar(H)/2;
bm->allocN32Pixels(W, H);
bm->eraseColor(SK_ColorTRANSPARENT);
SkCanvas canvas(*bm);
SkPaint paint;
- SkScalar cx = SkIntToScalar(W)/2;
- SkScalar cy = SkIntToScalar(H)/2;
- SkColor colors[] = {
- SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE,
- };
- SkShader* s = SkGradientShader::CreateRadial(SkPoint::Make(SkIntToScalar(W)/2,
- SkIntToScalar(H)/2),
- SkIntToScalar(W)/2, colors, NULL, SK_ARRAY_COUNT(colors),
- SkShader::kClamp_TileMode);
- paint.setShader(s)->unref();
+ paint.setShader(make_shader1(W, H))->unref();
paint.setAntiAlias(true);
canvas.drawCircle(cx, cy, cx, paint);
}
@@ -184,8 +188,69 @@ protected:
private:
typedef GM INHERITED;
};
+DEF_GM( return new TableColorFilterGM; )
//////////////////////////////////////////////////////////////////////////////
-static skiagm::GM* MyFactory(void*) { return new TableColorFilterGM; }
-static skiagm::GMRegistry reg(MyFactory);
+class ComposeColorFilterGM : public skiagm::GM {
+public:
+ ComposeColorFilterGM() {}
+
+protected:
+ virtual SkString onShortName() {
+ return SkString("composecolorfilter");
+ }
+
+ virtual SkISize onISize() {
+ return SkISize::Make(730, 730);
+ }
+
+ virtual void onDraw(SkCanvas* canvas) {
+ SkBitmap bm;
+ make_bm1(&bm);
+
+ canvas->drawColor(0xFFDDDDDD);
+
+ SkColor colors[] = { SK_ColorCYAN, SK_ColorMAGENTA, SK_ColorYELLOW };
+ SkXfermode::Mode modes[] = {
+ SkXfermode::kOverlay_Mode,
+ SkXfermode::kDarken_Mode,
+ SkXfermode::kColorBurn_Mode,
+ SkXfermode::kExclusion_Mode,
+ };
+
+ const int MODES = SK_ARRAY_COUNT(modes) * SK_ARRAY_COUNT(colors);
+ SkAutoTUnref<SkColorFilter> filters[MODES];
+ int index = 0;
+ for (size_t i = 0; i < SK_ARRAY_COUNT(modes); ++i) {
+ for (size_t j = 0; j < SK_ARRAY_COUNT(colors); ++j) {
+ filters[index++].reset(SkColorFilter::CreateModeFilter(colors[j], modes[i]));
+ }
+ }
+
+ SkPaint paint;
+ paint.setShader(make_shader1(50, 50))->unref();
+ SkRect r = SkRect::MakeWH(50, 50);
+ const SkScalar spacer = 10;
+
+ canvas->translate(spacer, spacer);
+
+ for (size_t y = 0; y < MODES; ++y) {
+ canvas->save();
+ for (size_t x = 0; x < MODES; ++x) {
+ SkAutoTUnref<SkColorFilter> compose(SkColorFilter::CreateComposeFilter(filters[y],
+ filters[x]));
+ paint.setColorFilter(compose);
+ canvas->drawRect(r, paint);
+ canvas->translate(r.width() + spacer, 0);
+ }
+ canvas->restore();
+ canvas->translate(0, r.height() + spacer);
+ }
+ }
+
+private:
+ typedef GM INHERITED;
+};
+DEF_GM( return new ComposeColorFilterGM; )
+
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