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/*
* 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);
}
}
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