| /* |
| * 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 "SkColorPriv.h" |
| #include "SkShader.h" |
| #include "SkSurface.h" |
| |
| #include "SkColorMatrixFilter.h" |
| #include "SkGradientShader.h" |
| |
| static SkShader* make_opaque_color() { |
| return SkShader::CreateColorShader(0xFFFF0000); |
| } |
| |
| static SkShader* make_alpha_color() { |
| return SkShader::CreateColorShader(0x80FF0000); |
| } |
| |
| static SkColorFilter* make_cf_null() { |
| return nullptr; |
| } |
| |
| static SkColorFilter* make_cf0() { |
| SkColorMatrix cm; |
| cm.setSaturation(0.75f); |
| return SkColorMatrixFilter::Create(cm); |
| } |
| |
| static void draw_into_canvas(SkCanvas* canvas) { |
| const SkRect r = SkRect::MakeWH(100, 100); |
| SkShader* (*shaders[])() { make_opaque_color, make_alpha_color }; |
| SkColorFilter* (*filters[])() { make_cf_null, make_cf0 }; |
| |
| SkPaint paint; |
| for (auto shProc : shaders) { |
| paint.setShader(shProc())->unref(); |
| for (auto cfProc : filters) { |
| SkSafeUnref(paint.setColorFilter(cfProc())); |
| canvas->drawRect(r, paint); |
| canvas->translate(120, 0); |
| } |
| } |
| } |
| |
| DEF_SIMPLE_GM(color4f, canvas, 510, 250) { |
| canvas->translate(20, 20); |
| |
| SkPaint bg; |
| // need the target to be opaque, so we can draw it to the screen |
| // even if it holds sRGB values. |
| bg.setColor(0xFFFFFFFF); |
| |
| SkColorProfileType const profiles[] { kLinear_SkColorProfileType, kSRGB_SkColorProfileType }; |
| for (auto profile : profiles) { |
| const SkImageInfo info = SkImageInfo::Make(500, 100, kN32_SkColorType, kPremul_SkAlphaType, |
| profile); |
| SkAutoTUnref<SkSurface> surface(SkSurface::NewRaster(info)); |
| surface->getCanvas()->drawPaint(bg); |
| draw_into_canvas(surface->getCanvas()); |
| surface->draw(canvas, 0, 0, nullptr); |
| canvas->translate(0, 120); |
| } |
| } |