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skia2/gm/imagefiltersbase.cpp
Ben Wagner 7fde8e1728 IWYU for gms. 
This almost gets gms to be iwyu clean. The last bit is around gm.cpp
and the tracing framework and its use of atomic. Will also need a way
of keeping things from regressing, which is difficult due to needing to
do this outside-in.

Change-Id: I1393531e99da8b0f1a29f55c53c86d53f459af7d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211593
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
2019-05-02 17:48:53 +00:00

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9.7 KiB
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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/gm.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkBlendMode.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkColorFilter.h"
#include "include/core/SkFlattenable.h"
#include "include/core/SkFont.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/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTypeface.h"
#include "include/core/SkTypes.h"
#include "include/effects/SkBlurImageFilter.h"
#include "include/effects/SkColorFilterImageFilter.h"
#include "include/effects/SkDropShadowImageFilter.h"
#include "include/utils/SkTextUtils.h"
#include "src/core/SkImageFilterPriv.h"
#include "src/core/SkSpecialImage.h"
#include "tools/ToolUtils.h"
#include <utility>
class SkReadBuffer;
class FailImageFilter : public SkImageFilter {
public:
static sk_sp<SkImageFilter> Make() {
return sk_sp<SkImageFilter>(new FailImageFilter);
}
SK_FLATTENABLE_HOOKS(FailImageFilter)
protected:
FailImageFilter() : INHERITED(nullptr, 0, nullptr) {}
sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&,
SkIPoint* offset) const override {
return nullptr;
}
private:
typedef SkImageFilter INHERITED;
};
sk_sp<SkFlattenable> FailImageFilter::CreateProc(SkReadBuffer& buffer) {
SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 0);
return FailImageFilter::Make();
}
class IdentityImageFilter : public SkImageFilter {
public:
static sk_sp<SkImageFilter> Make(sk_sp<SkImageFilter> input) {
return sk_sp<SkImageFilter>(new IdentityImageFilter(std::move(input)));
}
SK_FLATTENABLE_HOOKS(IdentityImageFilter)
protected:
sk_sp<SkSpecialImage> onFilterImage(SkSpecialImage* source, const Context&,
SkIPoint* offset) const override {
offset->set(0, 0);
return sk_ref_sp<SkSpecialImage>(source);
}
private:
IdentityImageFilter(sk_sp<SkImageFilter> input) : INHERITED(&input, 1, nullptr) {}
typedef SkImageFilter INHERITED;
};
// Register these image filters as deserializable before main().
namespace {
static struct Initializer {
Initializer() {
SK_REGISTER_FLATTENABLE(IdentityImageFilter);
SK_REGISTER_FLATTENABLE(FailImageFilter);
}
} initializer;
}
sk_sp<SkFlattenable> IdentityImageFilter::CreateProc(SkReadBuffer& buffer) {
SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
return IdentityImageFilter::Make(common.getInput(0));
}
///////////////////////////////////////////////////////////////////////////////
static void draw_paint(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
SkPaint paint;
paint.setImageFilter(std::move(imf));
paint.setColor(SK_ColorGREEN);
canvas->save();
canvas->clipRect(r);
canvas->drawPaint(paint);
canvas->restore();
}
static void draw_line(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
SkPaint paint;
paint.setColor(SK_ColorBLUE);
paint.setImageFilter(imf);
paint.setStrokeWidth(r.width()/10);
canvas->drawLine(r.fLeft, r.fTop, r.fRight, r.fBottom, paint);
}
static void draw_rect(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
SkPaint paint;
paint.setColor(SK_ColorYELLOW);
paint.setImageFilter(imf);
SkRect rr(r);
rr.inset(r.width()/10, r.height()/10);
canvas->drawRect(rr, paint);
}
static void draw_path(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
SkPaint paint;
paint.setColor(SK_ColorMAGENTA);
paint.setImageFilter(imf);
paint.setAntiAlias(true);
canvas->drawCircle(r.centerX(), r.centerY(), r.width()*2/5, paint);
}
static void draw_text(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
SkPaint paint;
paint.setImageFilter(imf);
paint.setColor(SK_ColorCYAN);
SkFont font(ToolUtils::create_portable_typeface(), r.height() / 2);
SkTextUtils::DrawString(canvas, "Text", r.centerX(), r.centerY(), font, paint,
SkTextUtils::kCenter_Align);
}
static void draw_bitmap(SkCanvas* canvas, const SkRect& r, sk_sp<SkImageFilter> imf) {
SkPaint paint;
paint.setImageFilter(std::move(imf));
SkIRect bounds;
r.roundOut(&bounds);
SkBitmap bm;
bm.allocN32Pixels(bounds.width(), bounds.height());
bm.eraseColor(SK_ColorTRANSPARENT);
SkCanvas c(bm);
draw_path(&c, r, nullptr);
canvas->drawBitmap(bm, 0, 0, &paint);
}
///////////////////////////////////////////////////////////////////////////////
class ImageFiltersBaseGM : public skiagm::GM {
public:
ImageFiltersBaseGM () {}
protected:
SkString onShortName() override {
return SkString("imagefiltersbase");
}
SkISize onISize() override { return SkISize::Make(700, 500); }
void draw_frame(SkCanvas* canvas, const SkRect& r) {
SkPaint paint;
paint.setStyle(SkPaint::kStroke_Style);
paint.setColor(SK_ColorRED);
canvas->drawRect(r, paint);
}
void onDraw(SkCanvas* canvas) override {
void (*drawProc[])(SkCanvas*, const SkRect&, sk_sp<SkImageFilter>) = {
draw_paint,
draw_line, draw_rect, draw_path, draw_text,
draw_bitmap,
};
auto cf = SkColorFilters::Blend(SK_ColorRED, SkBlendMode::kSrcIn);
sk_sp<SkImageFilter> filters[] = {
nullptr,
IdentityImageFilter::Make(nullptr),
FailImageFilter::Make(),
SkColorFilterImageFilter::Make(std::move(cf), nullptr),
// The strage 0.29 value tickles an edge case where crop rect calculates
// a small border, but the blur really needs no border. This tickels
// an msan uninitialized value bug.
SkBlurImageFilter::Make(12.0f, 0.29f, nullptr),
SkDropShadowImageFilter::Make(
10.0f, 5.0f, 3.0f, 3.0f, SK_ColorBLUE,
SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode,
nullptr),
};
SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64));
SkScalar MARGIN = SkIntToScalar(16);
SkScalar DX = r.width() + MARGIN;
SkScalar DY = r.height() + MARGIN;
canvas->translate(MARGIN, MARGIN);
for (size_t i = 0; i < SK_ARRAY_COUNT(drawProc); ++i) {
canvas->save();
for (size_t j = 0; j < SK_ARRAY_COUNT(filters); ++j) {
drawProc[i](canvas, r, filters[j]);
draw_frame(canvas, r);
canvas->translate(0, DY);
}
canvas->restore();
canvas->translate(DX, 0);
}
}
private:
typedef GM INHERITED;
};
DEF_GM( return new ImageFiltersBaseGM; )
///////////////////////////////////////////////////////////////////////////////
/*
* Want to test combos of filter and LCD text, to be sure we disable LCD in the presence of
* a filter.
*/
class ImageFiltersTextBaseGM : public skiagm::GM {
SkString fSuffix;
public:
ImageFiltersTextBaseGM(const char suffix[]) : fSuffix(suffix) {}
protected:
SkString onShortName() override {
SkString name;
name.printf("%s_%s", "textfilter", fSuffix.c_str());
return name;
}
SkISize onISize() override { return SkISize::Make(512, 342); }
void drawWaterfall(SkCanvas* canvas, const SkPaint& paint) {
static const SkFont::Edging kEdgings[3] = {
SkFont::Edging::kAlias,
SkFont::Edging::kAntiAlias,
SkFont::Edging::kSubpixelAntiAlias,
};
SkFont font(ToolUtils::create_portable_typeface(), 30);
SkAutoCanvasRestore acr(canvas, true);
for (SkFont::Edging edging : kEdgings) {
font.setEdging(edging);
canvas->drawString("Hamburgefon", 0, 0, font, paint);
canvas->translate(0, 40);
}
}
virtual void installFilter(SkPaint* paint) = 0;
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
canvas->translate(20, 40);
for (int doSaveLayer = 0; doSaveLayer <= 1; ++doSaveLayer) {
SkAutoCanvasRestore acr(canvas, true);
for (int useFilter = 0; useFilter <= 1; ++useFilter) {
SkAutoCanvasRestore acr2(canvas, true);
SkPaint paint;
if (useFilter) {
this->installFilter(&paint);
}
if (doSaveLayer) {
canvas->saveLayer(nullptr, &paint);
paint.setImageFilter(nullptr);
}
this->drawWaterfall(canvas, paint);
acr2.restore();
canvas->translate(250, 0);
}
acr.restore();
canvas->translate(0, 200);
}
}
private:
typedef GM INHERITED;
};
class ImageFiltersText_IF : public ImageFiltersTextBaseGM {
public:
ImageFiltersText_IF() : ImageFiltersTextBaseGM("image") {}
void installFilter(SkPaint* paint) override {
paint->setImageFilter(SkBlurImageFilter::Make(1.5f, 1.5f, nullptr));
}
};
DEF_GM( return new ImageFiltersText_IF; )
class ImageFiltersText_CF : public ImageFiltersTextBaseGM {
public:
ImageFiltersText_CF() : ImageFiltersTextBaseGM("color") {}
void installFilter(SkPaint* paint) override {
paint->setColorFilter(SkColorFilters::Blend(SK_ColorBLUE, SkBlendMode::kSrcIn));
}
};
DEF_GM( return new ImageFiltersText_CF; )
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