6a34f3a0c7
Change-Id: I34ded4a4b9c4600eaf801eec121ca851e04a6c23 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211586 Commit-Queue: Mike Klein <mtklein@google.com> Reviewed-by: Herb Derby <herb@google.com> Reviewed-by: Mike Klein <mtklein@google.com>
61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
/*
|
|
* Copyright 2017 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/SkBitmap.h"
|
|
#include "include/core/SkBlurTypes.h"
|
|
#include "include/core/SkCanvas.h"
|
|
#include "include/core/SkColor.h"
|
|
#include "include/core/SkColorFilter.h"
|
|
#include "include/core/SkImage.h"
|
|
#include "include/core/SkImageInfo.h"
|
|
#include "include/core/SkMaskFilter.h"
|
|
#include "include/core/SkPaint.h"
|
|
#include "include/core/SkRefCnt.h"
|
|
#include "include/core/SkShader.h"
|
|
|
|
static SkBitmap make_alpha_image(int w, int h) {
|
|
SkBitmap bm;
|
|
bm.allocPixels(SkImageInfo::MakeA8(w, h));
|
|
bm.eraseARGB(10, 0, 0 , 0);
|
|
for (int y = 0; y < bm.height(); ++y) {
|
|
for (int x = y; x < bm.width(); ++x) {
|
|
*bm.getAddr8(x, y) = 0xFF;
|
|
}
|
|
}
|
|
bm.setImmutable();
|
|
return bm;
|
|
}
|
|
|
|
static sk_sp<SkColorFilter> make_color_filter() {
|
|
float colorMatrix[20] = {
|
|
1, 0, 0, 0, 0,
|
|
0, 1, 0, 0, 0,
|
|
0, 0, 0.5, 0.5, 0,
|
|
0, 0, 0.5, 0.5, 0}; // mix G and A.
|
|
return SkColorFilters::Matrix(colorMatrix);
|
|
}
|
|
|
|
DEF_SIMPLE_GM(alpha_image, canvas, 256, 256) {
|
|
auto image = SkImage::MakeFromBitmap(make_alpha_image(96, 96));
|
|
SkPaint paint;
|
|
|
|
paint.setColorFilter(make_color_filter());
|
|
paint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, 10.0f));
|
|
canvas->drawImage(image.get(), 16, 16, &paint);
|
|
|
|
paint.setColorFilter(nullptr);
|
|
paint.setShader(SkShaders::Color(SK_ColorCYAN));
|
|
canvas->drawImage(image.get(), 144, 16, &paint);
|
|
|
|
paint.setColorFilter(make_color_filter());
|
|
canvas->drawImage(image.get(), 16, 144, &paint);
|
|
|
|
paint.setMaskFilter(nullptr);
|
|
canvas->drawImage(image.get(), 144, 144, &paint);
|
|
}
|