| /* |
| * 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/SkColorFilter.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkImageFilter.h" |
| #include "include/core/SkPaint.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/SkTileMode.h" |
| #include "include/effects/SkColorMatrix.h" |
| #include "include/effects/SkGradientShader.h" |
| #include "include/effects/SkImageFilters.h" |
| #include "include/private/SkTArray.h" |
| #include "include/private/SkTDArray.h" |
| #include "tools/Resources.h" |
| |
| #include <string.h> |
| #include <utility> |
| |
| #define FILTER_WIDTH SkIntToScalar(30) |
| #define FILTER_HEIGHT SkIntToScalar(30) |
| #define MARGIN SkIntToScalar(10) |
| |
| static sk_sp<SkColorFilter> cf_make_brightness(float brightness) { |
| float matrix[20] = { |
| 1, 0, 0, 0, brightness, |
| 0, 1, 0, 0, brightness, |
| 0, 0, 1, 0, brightness, |
| 0, 0, 0, 1, 0 }; |
| return SkColorFilters::Matrix(matrix); |
| } |
| |
| static sk_sp<SkColorFilter> cf_make_grayscale() { |
| float matrix[20]; |
| memset(matrix, 0, 20 * sizeof(float)); |
| matrix[0] = matrix[5] = matrix[10] = 0.2126f; |
| matrix[1] = matrix[6] = matrix[11] = 0.7152f; |
| matrix[2] = matrix[7] = matrix[12] = 0.0722f; |
| matrix[18] = 1.0f; |
| return SkColorFilters::Matrix(matrix); |
| } |
| |
| static sk_sp<SkColorFilter> cf_make_colorize(SkColor color) { |
| return SkColorFilters::Blend(color, SkBlendMode::kSrc); |
| } |
| |
| static void sk_gm_get_colorfilters(SkTArray<sk_sp<SkColorFilter>>* array) { |
| array->push_back(cf_make_brightness(0.5f)); |
| array->push_back(cf_make_grayscale()); |
| array->push_back(cf_make_colorize(SK_ColorBLUE)); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| static sk_sp<SkShader> sh_make_lineargradient0() { |
| const SkPoint pts[] = { { 0, 0 }, { 100, 100 } }; |
| const SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE }; |
| return SkGradientShader::MakeLinear(pts, colors, nullptr, 3, SkTileMode::kRepeat); |
| } |
| |
| static sk_sp<SkShader> sh_make_lineargradient1() { |
| const SkPoint pts[] = { { 0, 0 }, { 100, 100 } }; |
| const SkColor colors[] = { SK_ColorRED, 0x0000FF00, SK_ColorBLUE }; |
| return SkGradientShader::MakeLinear(pts, colors, nullptr, 3, SkTileMode::kRepeat); |
| } |
| |
| static sk_sp<SkShader> sh_make_image() { |
| sk_sp<SkImage> image(GetResourceAsImage("images/mandrill_128.png")); |
| if (!image) { |
| return nullptr; |
| } |
| return image->makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat, SkSamplingOptions()); |
| } |
| |
| static void sk_gm_get_shaders(SkTArray<sk_sp<SkShader>>* array) { |
| if (auto shader = sh_make_lineargradient0()) { |
| array->push_back(std::move(shader)); |
| } |
| if (auto shader = sh_make_lineargradient1()) { |
| array->push_back(std::move(shader)); |
| } |
| if (auto shader = sh_make_image()) { |
| array->push_back(std::move(shader)); |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| static sk_sp<SkImageFilter> make_blur(float amount, sk_sp<SkImageFilter> input) { |
| return SkImageFilters::Blur(amount, amount, std::move(input)); |
| } |
| |
| static sk_sp<SkImageFilter> make_brightness(float amount, sk_sp<SkImageFilter> input) { |
| return SkImageFilters::ColorFilter(cf_make_brightness(amount), std::move(input)); |
| } |
| |
| static sk_sp<SkImageFilter> make_grayscale(sk_sp<SkImageFilter> input) { |
| return SkImageFilters::ColorFilter(cf_make_grayscale(), std::move(input)); |
| } |
| |
| static sk_sp<SkImageFilter> make_mode_blue(sk_sp<SkImageFilter> input) { |
| return SkImageFilters::ColorFilter(cf_make_colorize(SK_ColorBLUE), std::move(input)); |
| } |
| |
| static void draw_clipped_rect(SkCanvas* canvas, |
| const SkRect& r, |
| const SkPaint& paint, |
| float outset = 0.0f) { |
| canvas->save(); |
| SkRect clip(r); |
| clip.outset(outset, outset); |
| canvas->clipRect(clip); |
| canvas->drawRect(r, paint); |
| canvas->restore(); |
| } |
| |
| DEF_SIMPLE_GM(colorfilterimagefilter, canvas, 400, 100){ |
| SkRect r = SkRect::MakeWH(FILTER_WIDTH, FILTER_HEIGHT); |
| SkPaint paint; |
| paint.setColor(SK_ColorRED); |
| canvas->save(); |
| for (float brightness = -1.0f; brightness <= 1.0f; brightness += 0.2f) { |
| sk_sp<SkImageFilter> dim(make_brightness(-brightness, nullptr)); |
| sk_sp<SkImageFilter> bright(make_brightness(brightness, std::move(dim))); |
| paint.setImageFilter(std::move(bright)); |
| draw_clipped_rect(canvas, r, paint); |
| canvas->translate(FILTER_WIDTH + MARGIN, 0); |
| } |
| canvas->restore(); |
| canvas->translate(0, FILTER_HEIGHT + MARGIN); |
| { |
| sk_sp<SkImageFilter> brightness(make_brightness(0.9f, nullptr)); |
| sk_sp<SkImageFilter> grayscale(make_grayscale(std::move(brightness))); |
| paint.setImageFilter(std::move(grayscale)); |
| draw_clipped_rect(canvas, r, paint); |
| canvas->translate(FILTER_WIDTH + MARGIN, 0); |
| } |
| { |
| sk_sp<SkImageFilter> grayscale(make_grayscale(nullptr)); |
| sk_sp<SkImageFilter> brightness(make_brightness(0.9f, std::move(grayscale))); |
| paint.setImageFilter(std::move(brightness)); |
| draw_clipped_rect(canvas, r, paint); |
| canvas->translate(FILTER_WIDTH + MARGIN, 0); |
| } |
| { |
| sk_sp<SkImageFilter> blue(make_mode_blue(nullptr)); |
| sk_sp<SkImageFilter> brightness(make_brightness(1.0f, std::move(blue))); |
| paint.setImageFilter(std::move(brightness)); |
| draw_clipped_rect(canvas, r, paint); |
| canvas->translate(FILTER_WIDTH + MARGIN, 0); |
| } |
| { |
| sk_sp<SkImageFilter> brightness(make_brightness(1.0f, nullptr)); |
| sk_sp<SkImageFilter> blue(make_mode_blue(std::move(brightness))); |
| paint.setImageFilter(std::move(blue)); |
| draw_clipped_rect(canvas, r, paint); |
| canvas->translate(FILTER_WIDTH + MARGIN, 0); |
| } |
| { |
| sk_sp<SkImageFilter> blur(make_blur(3.0f, nullptr)); |
| sk_sp<SkImageFilter> brightness(make_brightness(0.5f, std::move(blur))); |
| paint.setImageFilter(std::move(brightness)); |
| draw_clipped_rect(canvas, r, paint, 3); |
| canvas->translate(FILTER_WIDTH + MARGIN, 0); |
| } |
| { |
| sk_sp<SkImageFilter> blue(make_mode_blue(nullptr)); |
| paint.setImageFilter(std::move(blue)); |
| draw_clipped_rect(canvas, r, paint, 5); |
| canvas->translate(FILTER_WIDTH + MARGIN, 0); |
| } |
| } |
| |
| DEF_SIMPLE_GM(colorfilterimagefilter_layer, canvas, 32, 32) { |
| SkAutoCanvasRestore autoCanvasRestore(canvas, false); |
| SkColorMatrix cm; |
| cm.setSaturation(0.0f); |
| sk_sp<SkColorFilter> cf(SkColorFilters::Matrix(cm)); |
| SkPaint p; |
| p.setImageFilter(SkImageFilters::ColorFilter(std::move(cf), nullptr)); |
| canvas->saveLayer(nullptr, &p); |
| canvas->clear(SK_ColorRED); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| DEF_SIMPLE_GM(colorfiltershader, canvas, 610, 610) { |
| SkTArray<sk_sp<SkColorFilter>> filters; |
| sk_gm_get_colorfilters(&filters); |
| |
| SkTArray<sk_sp<SkShader>> shaders; |
| sk_gm_get_shaders(&shaders); |
| |
| const SkColor colors[] = { SK_ColorRED, SK_ColorBLUE }; |
| shaders.push_back(SkGradientShader::MakeTwoPointConical( |
| {0, 0}, 50, {0, 0}, 150, colors, nullptr, 2, SkTileMode::kClamp)); |
| |
| SkPaint paint; |
| SkRect r = SkRect::MakeWH(120, 120); |
| |
| canvas->translate(20, 20); |
| for (int y = 0; y < SkToInt(shaders.size()); ++y) { |
| SkShader* shader = shaders[y].get(); |
| |
| canvas->save(); |
| for (int x = -1; x < filters.size(); ++x) { |
| sk_sp<SkColorFilter> filter = x >= 0 ? filters[x] : nullptr; |
| |
| paint.setShader(shader->makeWithColorFilter(filter)); |
| canvas->drawRect(r, paint); |
| canvas->translate(150, 0); |
| } |
| canvas->restore(); |
| canvas->translate(0, 150); |
| } |
| } |