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- /*
- * Copyright 2012 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "gm/gm.h"
- #include "include/core/SkBlendMode.h"
- #include "include/core/SkCanvas.h"
- #include "include/core/SkColor.h"
- #include "include/core/SkFont.h"
- #include "include/core/SkImageInfo.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkPath.h"
- #include "include/core/SkPoint.h"
- #include "include/core/SkRect.h"
- #include "include/core/SkRefCnt.h"
- #include "include/core/SkScalar.h"
- #include "include/core/SkShader.h"
- #include "include/core/SkSize.h"
- #include "include/core/SkString.h"
- #include "include/core/SkSurface.h"
- #include "include/core/SkTileMode.h"
- #include "include/core/SkTypeface.h"
- #include "include/core/SkTypes.h"
- #include "include/effects/SkGradientShader.h"
- #include "tools/ToolUtils.h"
- #define W SkIntToScalar(80)
- #define H SkIntToScalar(60)
- typedef void (*PaintProc)(SkPaint*);
- static void identity_paintproc(SkPaint* paint) {
- paint->setShader(nullptr);
- }
- static void gradient_paintproc(SkPaint* paint) {
- const SkColor colors[] = { SK_ColorGREEN, SK_ColorBLUE };
- const SkPoint pts[] = { { 0, 0 }, { W, H } };
- paint->setShader(SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors),
- SkTileMode::kClamp));
- }
- typedef void (*Proc)(SkCanvas*, const SkPaint&, const SkFont&);
- static void draw_hair(SkCanvas* canvas, const SkPaint& paint, const SkFont&) {
- SkPaint p(paint);
- p.setStrokeWidth(0);
- canvas->drawLine(0, 0, W, H, p);
- }
- static void draw_thick(SkCanvas* canvas, const SkPaint& paint, const SkFont&) {
- SkPaint p(paint);
- p.setStrokeWidth(H/5);
- canvas->drawLine(0, 0, W, H, p);
- }
- static void draw_rect(SkCanvas* canvas, const SkPaint& paint, const SkFont&) {
- canvas->drawRect(SkRect::MakeWH(W, H), paint);
- }
- static void draw_oval(SkCanvas* canvas, const SkPaint& paint, const SkFont&) {
- canvas->drawOval(SkRect::MakeWH(W, H), paint);
- }
- static void draw_text(SkCanvas* canvas, const SkPaint& paint, const SkFont& font) {
- canvas->drawString("Hamburge", 0, H*2/3, font, paint);
- }
- class SrcModeGM : public skiagm::GM {
- SkPath fPath;
- void onOnceBeforeDraw() override { this->setBGColor(SK_ColorBLACK); }
- SkString onShortName() override { return SkString("srcmode"); }
- SkISize onISize() override { return {640, 760}; }
- void drawContent(SkCanvas* canvas) {
- canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
- SkPaint paint;
- SkFont font(ToolUtils::create_portable_typeface(), H / 4);
- paint.setColor(0x80F60000);
- const Proc procs[] = {
- draw_hair, draw_thick, draw_rect, draw_oval, draw_text
- };
- const SkBlendMode modes[] = {
- SkBlendMode::kSrcOver, SkBlendMode::kSrc, SkBlendMode::kClear
- };
- const PaintProc paintProcs[] = {
- identity_paintproc, gradient_paintproc
- };
- for (int aa = 0; aa <= 1; ++aa) {
- paint.setAntiAlias(SkToBool(aa));
- font.setEdging(SkToBool(aa) ? SkFont::Edging::kAntiAlias : SkFont::Edging::kAlias);
- canvas->save();
- for (size_t i = 0; i < SK_ARRAY_COUNT(paintProcs); ++i) {
- paintProcs[i](&paint);
- for (size_t x = 0; x < SK_ARRAY_COUNT(modes); ++x) {
- paint.setBlendMode(modes[x]);
- canvas->save();
- for (size_t y = 0; y < SK_ARRAY_COUNT(procs); ++y) {
- procs[y](canvas, paint, font);
- canvas->translate(0, H * 5 / 4);
- }
- canvas->restore();
- canvas->translate(W * 5 / 4, 0);
- }
- }
- canvas->restore();
- canvas->translate(0, (H * 5 / 4) * SK_ARRAY_COUNT(procs));
- }
- }
- static sk_sp<SkSurface> compat_surface(SkCanvas* canvas, const SkISize& size, bool skipGPU) {
- SkImageInfo info = SkImageInfo::MakeN32Premul(size);
- bool callNewSurface = true;
- if (canvas->getGrContext() && skipGPU) {
- callNewSurface = false;
- }
- sk_sp<SkSurface> surface = callNewSurface ? canvas->makeSurface(info) : nullptr;
- if (nullptr == surface) {
- // picture canvas will return null, so fall-back to raster
- surface = SkSurface::MakeRaster(info);
- }
- return surface;
- }
- void onDraw(SkCanvas* canvas) override {
- auto surf(compat_surface(canvas, this->getISize(), this->isCanvasDeferred()));
- surf->getCanvas()->drawColor(SK_ColorWHITE);
- this->drawContent(surf->getCanvas());
- surf->draw(canvas, 0, 0, nullptr);
- }
- };
- ///////////////////////////////////////////////////////////////////////////////
- DEF_GM(return new SrcModeGM;)
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