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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 "SkColorFilter.h"
#include "SkColorPriv.h"
#include "SkShader.h"
#include "SkBlurImageFilter.h"
#include "SkColorFilterImageFilter.h"
#include "SkDropShadowImageFilter.h"
#include "SkTestImageFilters.h"
class FailImageFilter : public SkImageFilter {
public:
class Registrar {
public:
Registrar() {
SkFlattenable::Register("FailImageFilter",
FailImageFilter::CreateProc,
FailImageFilter::GetFlattenableType());
}
};
static FailImageFilter* Create() {
return SkNEW(FailImageFilter);
}
SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(FailImageFilter)
protected:
FailImageFilter() : INHERITED(0, NULL) {}
bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
SkBitmap* result, SkIPoint* offset) const override {
return false;
}
private:
typedef SkImageFilter INHERITED;
};
static FailImageFilter::Registrar gReg0;
SkFlattenable* FailImageFilter::CreateProc(SkReadBuffer& buffer) {
SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 0);
return FailImageFilter::Create();
}
#ifndef SK_IGNORE_TO_STRING
void FailImageFilter::toString(SkString* str) const {
str->appendf("FailImageFilter: (");
str->append(")");
}
#endif
class IdentityImageFilter : public SkImageFilter {
public:
class Registrar {
public:
Registrar() {
SkFlattenable::Register("IdentityImageFilter",
IdentityImageFilter::CreateProc,
IdentityImageFilter::GetFlattenableType());
}
};
static IdentityImageFilter* Create(SkImageFilter* input = NULL) {
return SkNEW_ARGS(IdentityImageFilter, (input));
}
SK_TO_STRING_OVERRIDE()
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(IdentityImageFilter)
protected:
IdentityImageFilter(SkImageFilter* input) : INHERITED(1, &input) {}
bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
SkBitmap* result, SkIPoint* offset) const override {
*result = src;
offset->set(0, 0);
return true;
}
private:
typedef SkImageFilter INHERITED;
};
static IdentityImageFilter::Registrar gReg1;
SkFlattenable* IdentityImageFilter::CreateProc(SkReadBuffer& buffer) {
SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
return IdentityImageFilter::Create(common.getInput(0));
}
#ifndef SK_IGNORE_TO_STRING
void IdentityImageFilter::toString(SkString* str) const {
str->appendf("IdentityImageFilter: (");
str->append(")");
}
#endif
///////////////////////////////////////////////////////////////////////////////
static void draw_paint(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
SkPaint paint;
paint.setImageFilter(imf);
paint.setColor(SK_ColorGREEN);
canvas->save();
canvas->clipRect(r);
canvas->drawPaint(paint);
canvas->restore();
}
static void draw_line(SkCanvas* canvas, const SkRect& r, 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, 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, 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, SkImageFilter* imf) {
SkPaint paint;
paint.setImageFilter(imf);
paint.setColor(SK_ColorCYAN);
paint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&paint);
paint.setTextSize(r.height()/2);
paint.setTextAlign(SkPaint::kCenter_Align);
canvas->drawText("Text", 4, r.centerX(), r.centerY(), paint);
}
static void draw_bitmap(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
SkPaint paint;
paint.setImageFilter(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, NULL);
canvas->drawBitmap(bm, 0, 0, &paint);
}
static void draw_sprite(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
SkPaint paint;
paint.setImageFilter(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, NULL);
SkPoint loc = { r.fLeft, r.fTop };
canvas->getTotalMatrix().mapPoints(&loc, 1);
canvas->drawSprite(bm,
SkScalarRoundToInt(loc.fX), SkScalarRoundToInt(loc.fY),
&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&, SkImageFilter*) = {
draw_paint,
draw_line, draw_rect, draw_path, draw_text,
draw_bitmap,
draw_sprite
};
SkColorFilter* cf = SkColorFilter::CreateModeFilter(SK_ColorRED,
SkXfermode::kSrcIn_Mode);
SkImageFilter* filters[] = {
NULL,
IdentityImageFilter::Create(),
FailImageFilter::Create(),
SkColorFilterImageFilter::Create(cf),
SkBlurImageFilter::Create(12.0f, 0.0f),
SkDropShadowImageFilter::Create(10.0f, 5.0f, 3.0f, 3.0f, SK_ColorBLUE,
SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode),
};
cf->unref();
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);
}
for(size_t j = 0; j < SK_ARRAY_COUNT(filters); ++j) {
SkSafeUnref(filters[j]);
}
}
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& origPaint) {
const uint32_t flags[] = {
0,
SkPaint::kAntiAlias_Flag,
SkPaint::kAntiAlias_Flag | SkPaint::kLCDRenderText_Flag,
};
SkPaint paint(origPaint);
paint.setTextSize(30);
SkAutoCanvasRestore acr(canvas, true);
for (size_t i = 0; i < SK_ARRAY_COUNT(flags); ++i) {
paint.setFlags(flags[i]);
canvas->drawText("Hamburgefons", 11, 0, 0, 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(NULL, &paint);
paint.setImageFilter(NULL);
}
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::Create(1.5f, 1.5f))->unref();
}
};
DEF_GM( return new ImageFiltersText_IF; )
class ImageFiltersText_CF : public ImageFiltersTextBaseGM {
public:
ImageFiltersText_CF() : ImageFiltersTextBaseGM("color") {}
void installFilter(SkPaint* paint) override {
paint->setColorFilter(SkColorFilter::CreateModeFilter(SK_ColorBLUE, SkXfermode::kSrcIn_Mode))->unref();
}
};
DEF_GM( return new ImageFiltersText_CF; )