blob: fef02ac007bdda5df330ef41815af4d57203ef04 [file] [log] [blame]
/*
* 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/base/SkTArray.h"
#include "include/private/base/SkTDArray.h"
#include "tools/Resources.h"
#include <string.h>
#include <utility>
using namespace skia_private;
#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(TArray<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(TArray<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) {
TArray<sk_sp<SkColorFilter>> filters;
sk_gm_get_colorfilters(&filters);
TArray<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);
}
}