diff options
Diffstat (limited to 'gm')
| -rw-r--r-- | gm/imagefiltersbase.cpp | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/gm/imagefiltersbase.cpp b/gm/imagefiltersbase.cpp new file mode 100644 index 0000000000..bde2612166 --- /dev/null +++ b/gm/imagefiltersbase.cpp @@ -0,0 +1,215 @@ +/* + * Copyright 2011 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "gm.h" +#include "SkCanvas.h" +#include "SkColorFilter.h" +#include "SkColorPriv.h" +#include "SkShader.h" + +#include "SkBlurImageFilter.h" +#include "SkTestImageFilters.h" + +class FailImageFilter : public SkImageFilter { +public: + FailImageFilter() {} + virtual Factory getFactory() SK_OVERRIDE { return CreateProc; }; + +protected: + virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&, + SkBitmap* result, SkIPoint* offset) { + return false; + } + + FailImageFilter(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {} + +private: + static SkFlattenable* CreateProc(SkFlattenableReadBuffer& buffer) { + return new FailImageFilter(buffer); + } + + typedef SkImageFilter INHERITED; +}; + +class IdentityImageFilter : public SkImageFilter { +public: + IdentityImageFilter() {} + virtual Factory getFactory() SK_OVERRIDE { return CreateProc; }; + +protected: + virtual bool onFilterImage(Proxy*, const SkBitmap& src, const SkMatrix&, + SkBitmap* result, SkIPoint* offset) { + *result = src; + return true; + } + + IdentityImageFilter(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {} + +private: + static SkFlattenable* CreateProc(SkFlattenableReadBuffer& buffer) { + return new IdentityImageFilter(buffer); + } + + typedef SkImageFilter INHERITED; +}; + +/////////////////////////////////////////////////////////////////////////////// + +static void draw_paint(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { + SkPaint paint; + paint.setImageFilter(imf); + paint.setColor(SK_ColorGREEN); + canvas->save(); + canvas->clipRect(r); + canvas->drawPaint(paint); + canvas->restore(); +} + +static void draw_line(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { + SkPaint paint; + paint.setColor(SK_ColorBLUE); + paint.setImageFilter(imf); + paint.setStrokeWidth(r.width()/10); + canvas->drawLine(r.fLeft, r.fTop, r.fRight, r.fBottom, paint); +} + +static void draw_rect(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { + SkPaint paint; + paint.setColor(SK_ColorYELLOW); + paint.setImageFilter(imf); + SkRect rr(r); + rr.inset(r.width()/10, r.height()/10); + canvas->drawRect(rr, paint); +} + +static void draw_path(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { + SkPaint paint; + paint.setColor(SK_ColorMAGENTA); + paint.setImageFilter(imf); + paint.setAntiAlias(true); + canvas->drawCircle(r.centerX(), r.centerY(), r.width()*2/5, paint); +} + +static void draw_text(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { + SkPaint paint; + paint.setImageFilter(imf); + paint.setColor(SK_ColorCYAN); + paint.setAntiAlias(true); + paint.setTextSize(r.height()/2); + paint.setTextAlign(SkPaint::kCenter_Align); + canvas->drawText("Text", 4, r.centerX(), r.centerY(), paint); +} + +static void draw_bitmap(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { + SkPaint paint; + paint.setImageFilter(imf); + + SkIRect bounds; + r.roundOut(&bounds); + + SkBitmap bm; + bm.setConfig(SkBitmap::kARGB_8888_Config, bounds.width(), bounds.height()); + bm.allocPixels(); + bm.eraseColor(0); + SkCanvas c(bm); + draw_path(&c, r, NULL); + + canvas->drawBitmap(bm, 0, 0, &paint); +} + +static void draw_sprite(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) { + SkPaint paint; + paint.setImageFilter(imf); + + SkIRect bounds; + r.roundOut(&bounds); + + SkBitmap bm; + bm.setConfig(SkBitmap::kARGB_8888_Config, bounds.width(), bounds.height()); + bm.allocPixels(); + bm.eraseColor(0); + SkCanvas c(bm); + draw_path(&c, r, NULL); + + SkPoint loc = { r.fLeft, r.fTop }; + canvas->getTotalMatrix().mapPoints(&loc, 1); + canvas->drawSprite(bm, + SkScalarRoundToInt(loc.fX), SkScalarRoundToInt(loc.fY), + &paint); +} + +/////////////////////////////////////////////////////////////////////////////// + +class ImageFiltersBaseGM : public skiagm::GM { +public: + ImageFiltersBaseGM () {} + +protected: + + virtual SkString onShortName() { + return SkString("imagefiltersbase"); + } + + virtual SkISize onISize() { return SkISize::Make(700, 460); } + + void draw_frame(SkCanvas* canvas, const SkRect& r) { + SkPaint paint; + paint.setStyle(SkPaint::kStroke_Style); + paint.setColor(SK_ColorRED); + canvas->drawRect(r, paint); + } + + virtual void onDraw(SkCanvas* canvas) { + void (*drawProc[])(SkCanvas*, const SkRect&, SkImageFilter*) = { + draw_paint, + draw_line, draw_rect, draw_path, draw_text, + draw_bitmap, + draw_sprite + }; + + SkColorFilter* cf = SkColorFilter::CreateModeFilter(SK_ColorRED, + SkXfermode::kSrcIn_Mode); + SkImageFilter* filters[] = { +#if 1 + NULL, + new IdentityImageFilter, + new FailImageFilter, + new SkColorFilterImageFilter(cf), +#endif + new SkBlurImageFilter(12.0f, 0.0f), + }; + cf->unref(); + + SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64)); + SkScalar MARGIN = SkIntToScalar(16); + SkScalar DX = r.width() + MARGIN; + SkScalar DY = r.height() + MARGIN; + + canvas->translate(MARGIN, MARGIN); + for (size_t i = 0; i < SK_ARRAY_COUNT(drawProc); ++i) { + canvas->save(); + for (size_t j = 0; j < SK_ARRAY_COUNT(filters); ++j) { + drawProc[i](canvas, r, filters[j]); + + draw_frame(canvas, r); + canvas->translate(0, DY); + } + canvas->restore(); + canvas->translate(DX, 0); + } + } + +private: + typedef GM INHERITED; +}; + +/////////////////////////////////////////////////////////////////////////////// + +static skiagm::GM* MyFactory(void*) { return new ImageFiltersBaseGM; } +static skiagm::GMRegistry reg(MyFactory); + + |