dbfd7ab108
'static const' means, there must be at most one of these, and initialize it at compile time if possible or runtime if necessary. This leads to unexpected code execution, and TSAN* will complain about races on the guard variables. Generally 'constexpr' or 'const' are better choices. Neither can cause races: they're either intialized at compile time (constexpr) or intialized each time independently (const). This CL prefers constexpr where possible, and uses const where not. It even prefers constexpr over const where they don't make a difference... I want to have lots of examples of constexpr for people to see and mimic. The scoped-to-class static has nothing to do with any of this, and is not changed. * Not yet on the bots, which use an older TSAN. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2300623005 Review-Url: https://codereview.chromium.org/2300623005
89 lines
3.0 KiB
C++
89 lines
3.0 KiB
C++
/*
|
|
* 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.h"
|
|
#include "SkImageSource.h"
|
|
#include "SkMagnifierImageFilter.h"
|
|
#include "SkRandom.h"
|
|
#include "SkSurface.h"
|
|
|
|
#define WIDTH 500
|
|
#define HEIGHT 500
|
|
|
|
DEF_SIMPLE_GM_BG(imagemagnifier, canvas, WIDTH, HEIGHT, SK_ColorBLACK) {
|
|
SkPaint filterPaint;
|
|
filterPaint.setImageFilter(
|
|
SkMagnifierImageFilter::Make(
|
|
SkRect::MakeXYWH(SkIntToScalar(100), SkIntToScalar(100),
|
|
SkIntToScalar(WIDTH / 2),
|
|
SkIntToScalar(HEIGHT / 2)),
|
|
100, nullptr));
|
|
canvas->saveLayer(nullptr, &filterPaint);
|
|
const char* str = "The quick brown fox jumped over the lazy dog.";
|
|
SkRandom rand;
|
|
for (int i = 0; i < 25; ++i) {
|
|
int x = rand.nextULessThan(WIDTH);
|
|
int y = rand.nextULessThan(HEIGHT);
|
|
SkPaint paint;
|
|
sk_tool_utils::set_portable_typeface(&paint);
|
|
paint.setColor(sk_tool_utils::color_to_565(rand.nextBits(24) | 0xFF000000));
|
|
paint.setTextSize(rand.nextRangeScalar(0, 300));
|
|
paint.setAntiAlias(true);
|
|
canvas->drawText(str, strlen(str), SkIntToScalar(x),
|
|
SkIntToScalar(y), paint);
|
|
}
|
|
canvas->restore();
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
#define WIDTH_HEIGHT 256
|
|
|
|
static sk_sp<SkImage> make_img() {
|
|
const SkImageInfo info = SkImageInfo::MakeN32Premul(WIDTH_HEIGHT, WIDTH_HEIGHT);
|
|
|
|
sk_sp<SkSurface> surf(SkSurface::MakeRaster(info));
|
|
|
|
SkCanvas* canvas = surf->getCanvas();
|
|
|
|
canvas->clear(0x0);
|
|
|
|
SkPaint paint;
|
|
paint.setColor(SK_ColorBLUE);
|
|
|
|
for (float pos = 0; pos < WIDTH_HEIGHT; pos += 16) {
|
|
canvas->drawLine(0, pos, SkIntToScalar(WIDTH_HEIGHT), pos, paint);
|
|
canvas->drawLine(pos, 0, pos, SkIntToScalar(WIDTH_HEIGHT), paint);
|
|
}
|
|
|
|
return surf->makeImageSnapshot();
|
|
}
|
|
|
|
DEF_SIMPLE_GM_BG(imagemagnifier_cropped, canvas, WIDTH_HEIGHT, WIDTH_HEIGHT, SK_ColorBLACK) {
|
|
|
|
sk_sp<SkImage> image(make_img());
|
|
|
|
sk_sp<SkImageFilter> imageSource(SkImageSource::Make(std::move(image)));
|
|
|
|
SkRect srcRect = SkRect::MakeWH(SkIntToScalar(WIDTH_HEIGHT-32),
|
|
SkIntToScalar(WIDTH_HEIGHT-32));
|
|
srcRect.inset(64.0f, 64.0f);
|
|
|
|
constexpr SkScalar kInset = 64.0f;
|
|
|
|
// Crop out a 16 pixel ring around the result
|
|
const SkRect rect = SkRect::MakeXYWH(16, 16, WIDTH_HEIGHT-32, WIDTH_HEIGHT-32);
|
|
SkImageFilter::CropRect cropRect(rect);
|
|
|
|
SkPaint filterPaint;
|
|
filterPaint.setImageFilter(SkMagnifierImageFilter::Make(srcRect, kInset,
|
|
std::move(imageSource),
|
|
&cropRect));
|
|
|
|
canvas->saveLayer(nullptr, &filterPaint);
|
|
canvas->restore();
|
|
}
|