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/*
* 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 "SkBlurMask.h"
#include "SkBlurMaskFilter.h"
#include "SkCanvas.h"
#include "SkPath.h"
#define STROKE_WIDTH SkIntToScalar(10)
typedef void (*Proc)(SkCanvas*, const SkRect&, const SkPaint&);
static void fill_rect(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
canvas->drawRect(r, p);
}
static void draw_donut(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
SkRect rect;
SkPath path;
rect = r;
rect.outset(STROKE_WIDTH/2, STROKE_WIDTH/2);
path.addRect(rect);
rect = r;
rect.inset(STROKE_WIDTH/2, STROKE_WIDTH/2);
path.addRect(rect);
path.setFillType(SkPath::kEvenOdd_FillType);
canvas->drawPath(path, p);
}
static void draw_donut_skewed(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
SkRect rect;
SkPath path;
rect = r;
rect.outset(STROKE_WIDTH/2, STROKE_WIDTH/2);
path.addRect(rect);
rect = r;
rect.inset(STROKE_WIDTH/2, STROKE_WIDTH/2);
rect.offset(7, -7);
path.addRect(rect);
path.setFillType(SkPath::kEvenOdd_FillType);
canvas->drawPath(path, p);
}
#include "SkGradientShader.h"
/*
* Spits out a dummy gradient to test blur with shader on paint
*/
static SkShader* MakeRadial() {
SkPoint pts[2] = {
{ 0, 0 },
{ SkIntToScalar(100), SkIntToScalar(100) }
};
SkShader::TileMode tm = SkShader::kClamp_TileMode;
const SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, };
const SkScalar pos[] = { SK_Scalar1/4, SK_Scalar1*3/4 };
SkMatrix scale;
scale.setScale(0.5f, 0.5f);
scale.postTranslate(25.f, 25.f);
SkPoint center0, center1;
center0.set(SkScalarAve(pts[0].fX, pts[1].fX),
SkScalarAve(pts[0].fY, pts[1].fY));
center1.set(SkScalarInterp(pts[0].fX, pts[1].fX, SkIntToScalar(3)/5),
SkScalarInterp(pts[0].fY, pts[1].fY, SkIntToScalar(1)/4));
return SkGradientShader::CreateTwoPointRadial(center1, (pts[1].fX - pts[0].fX) / 7,
center0, (pts[1].fX - pts[0].fX) / 2,
colors, pos, SK_ARRAY_COUNT(colors), tm,
0, &scale);
}
typedef void (*PaintProc)(SkPaint*, SkScalar width);
class BlurRectGM : public skiagm::GM {
SkAutoTUnref<SkMaskFilter> fMaskFilters[kLastEnum_SkBlurStyle + 1];
SkString fName;
SkAlpha fAlpha;
public:
BlurRectGM(const char name[], U8CPU alpha)
: fName(name)
, fAlpha(SkToU8(alpha)) {
}
protected:
void onOnceBeforeDraw() override {
for (int i = 0; i <= kLastEnum_SkBlurStyle; ++i) {
fMaskFilters[i].reset(SkBlurMaskFilter::Create((SkBlurStyle)i,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(STROKE_WIDTH/2)),
SkBlurMaskFilter::kHighQuality_BlurFlag));
}
}
SkString onShortName() override {
return fName;
}
SkISize onISize() override {
return SkISize::Make(860, 820);
}
void onDraw(SkCanvas* canvas) override {
canvas->translate(STROKE_WIDTH*3/2, STROKE_WIDTH*3/2);
SkRect r = { 0, 0, 100, 50 };
SkScalar scales[] = { SK_Scalar1, 0.6f };
for (size_t s = 0; s < SK_ARRAY_COUNT(scales); ++s) {
canvas->save();
for (size_t f = 0; f < SK_ARRAY_COUNT(fMaskFilters); ++f) {
SkPaint paint;
paint.setMaskFilter(fMaskFilters[f]);
paint.setAlpha(fAlpha);
SkPaint paintWithRadial = paint;
paintWithRadial.setShader(MakeRadial())->unref();
static const Proc procs[] = {
fill_rect, draw_donut, draw_donut_skewed
};
canvas->save();
canvas->scale(scales[s], scales[s]);
this->drawProcs(canvas, r, paint, false, procs, SK_ARRAY_COUNT(procs));
canvas->translate(r.width() * 4/3, 0);
this->drawProcs(canvas, r, paintWithRadial, false, procs, SK_ARRAY_COUNT(procs));
canvas->translate(r.width() * 4/3, 0);
this->drawProcs(canvas, r, paint, true, procs, SK_ARRAY_COUNT(procs));
canvas->translate(r.width() * 4/3, 0);
this->drawProcs(canvas, r, paintWithRadial, true, procs, SK_ARRAY_COUNT(procs));
canvas->restore();
canvas->translate(0, SK_ARRAY_COUNT(procs) * r.height() * 4/3 * scales[s]);
}
canvas->restore();
canvas->translate(4 * r.width() * 4/3 * scales[s], 0);
}
}
private:
void drawProcs(SkCanvas* canvas, const SkRect& r, const SkPaint& paint,
bool doClip, const Proc procs[], size_t procsCount) {
SkAutoCanvasRestore acr(canvas, true);
for (size_t i = 0; i < procsCount; ++i) {
if (doClip) {
SkRect clipRect(r);
clipRect.inset(STROKE_WIDTH/2, STROKE_WIDTH/2);
canvas->save();
canvas->clipRect(r);
}
procs[i](canvas, r, paint);
if (doClip) {
canvas->restore();
}
canvas->translate(0, r.height() * 4/3);
}
}
private:
typedef GM INHERITED;
};
class BlurRectDirectGM : public skiagm::GM {
SkString fName;
int fGMWidth, fGMHeight;
int fPadding, fMargin;
public:
BlurRectDirectGM(const char name[])
: fName(name),
fGMWidth(1200),
fGMHeight(1024),
fPadding(10),
fMargin(100)
{
}
protected:
virtual SkString onShortName() {
return fName;
}
virtual SkISize onISize() {
return SkISize::Make(fGMWidth, fGMHeight);
}
virtual void onDraw(SkCanvas* canvas) {
const int widths[] = {25, 5, 5, 100, 150, 25};
const int heights[] = {100, 100, 5, 25, 150, 25};
const SkBlurStyle styles[] = {kNormal_SkBlurStyle, kInner_SkBlurStyle, kOuter_SkBlurStyle};
const float radii[] = {20, 5, 10};
canvas->translate(50,20);
int cur_x = 0;
int cur_y = 0;
int max_height = 0;
for (size_t i = 0 ; i < SK_ARRAY_COUNT(widths) ; i++) {
int width = widths[i];
int height = heights[i];
SkRect r;
r.setWH(SkIntToScalar(width), SkIntToScalar(height));
SkAutoCanvasRestore autoRestore(canvas, true);
for (size_t j = 0 ; j < SK_ARRAY_COUNT(radii) ; j++) {
float radius = radii[j];
for (size_t k = 0 ; k < SK_ARRAY_COUNT(styles) ; k++) {
SkBlurStyle style = styles[k];
SkMask mask;
SkBlurMask::BlurRect(SkBlurMask::ConvertRadiusToSigma(radius), &mask, r, style);
SkAutoMaskFreeImage amfi(mask.fImage);
SkBitmap bm;
bm.installMaskPixels(mask);
if (cur_x + bm.width() >= fGMWidth - fMargin) {
cur_x = 0;
cur_y += max_height + fPadding;
max_height = 0;
}
canvas->save();
canvas->translate((SkScalar)cur_x, (SkScalar)cur_y);
canvas->translate(-(bm.width() - r.width())/2, -(bm.height()-r.height())/2);
canvas->drawBitmap(bm, 0.f, 0.f, NULL);
canvas->restore();
cur_x += bm.width() + fPadding;
if (bm.height() > max_height)
max_height = bm.height();
}
}
}
}
private:
typedef GM INHERITED;
};
class BlurRectCompareGM : public skiagm::GM {
SkString fName;
unsigned int fRectWidth, fRectHeight;
SkScalar fRadius;
SkBlurStyle fStyle;
public:
BlurRectCompareGM(const char name[], unsigned int rectWidth,
unsigned int rectHeight, float radius,
SkBlurStyle style)
: fName(name)
, fRectWidth(rectWidth)
, fRectHeight(rectHeight)
, fRadius(radius)
, fStyle(style) {
}
int width() const {
return fRectWidth;
}
int height() const {
return fRectHeight;
}
SkScalar radius() const {
return fRadius;
}
SkBlurStyle style() const {
return fStyle;
}
protected:
virtual SkString onShortName() {
return fName;
}
virtual SkISize onISize() {
return SkISize::Make(640, 480);
}
virtual bool makeMask(SkMask *m, const SkRect&) = 0;
virtual void onDraw(SkCanvas* canvas) {
SkRect r;
r.setWH(SkIntToScalar(fRectWidth), SkIntToScalar(fRectHeight));
SkISize canvas_size = canvas->getDeviceSize();
int center_x = (canvas_size.fWidth - (int)(r.width()))/2;
int center_y = (canvas_size.fHeight - (int)(r.height()))/2;
SkMask mask;
if (!this->makeMask(&mask, r)) {
SkPaint paint;
r.offset( SkIntToScalar(center_x), SkIntToScalar(center_y) );
canvas->drawRect(r,paint);
return;
}
SkAutoMaskFreeImage amfi(mask.fImage);
SkBitmap bm;
bm.installMaskPixels(mask);
center_x = (canvas_size.fWidth - mask.fBounds.width())/2;
center_y = (canvas_size.fHeight - mask.fBounds.height())/2;
canvas->drawBitmap(bm, SkIntToScalar(center_x), SkIntToScalar(center_y), NULL);
}
private:
typedef GM INHERITED;
};
class BlurRectFastGM: public BlurRectCompareGM {
public:
BlurRectFastGM(const char name[], unsigned int rectWidth,
unsigned int rectHeight, float blurRadius,
SkBlurStyle style) :
INHERITED(name, rectWidth, rectHeight, blurRadius, style) {
}
protected:
bool makeMask(SkMask *m, const SkRect& r) override {
return SkBlurMask::BlurRect(SkBlurMask::ConvertRadiusToSigma(this->radius()),
m, r, this->style());
}
private:
typedef BlurRectCompareGM INHERITED;
};
class BlurRectSlowGM: public BlurRectCompareGM {
public:
BlurRectSlowGM(const char name[], unsigned int rectWidth, unsigned int rectHeight,
float blurRadius, SkBlurStyle style)
: INHERITED(name, rectWidth, rectHeight, blurRadius, style) {
}
protected:
bool makeMask(SkMask *m, const SkRect& r) override {
SkMask src;
r.roundOut(&src.fBounds);
src.fBounds.offset(-src.fBounds.fLeft, -src.fBounds.fTop); // move to origin
src.fFormat = SkMask::kA8_Format;
src.fRowBytes = src.fBounds.width();
src.fImage = SkMask::AllocImage(src.computeTotalImageSize());
SkAutoMaskFreeImage amfi(src.fImage);
memset(src.fImage, 0xff, src.computeTotalImageSize());
return SkBlurMask::BoxBlur(m, src,
SkBlurMask::ConvertRadiusToSigma(this->radius()),
this->style(), this->getQuality());
}
virtual SkBlurQuality getQuality() {
return kHigh_SkBlurQuality;
}
private:
typedef BlurRectCompareGM INHERITED;
};
class BlurRectSlowLowGM: public BlurRectSlowGM {
public:
BlurRectSlowLowGM(const char name[], unsigned int rectWidth, unsigned int rectHeight,
float blurRadius, SkBlurStyle style)
: INHERITED(name, rectWidth, rectHeight, blurRadius, style) {
}
protected:
SkBlurQuality getQuality() override {
return kLow_SkBlurQuality;
}
private:
typedef BlurRectSlowGM INHERITED;
};
class BlurRectGroundTruthGM: public BlurRectCompareGM {
public:
BlurRectGroundTruthGM(const char name[], unsigned int rectWidth, unsigned int rectHeight,
float blurRadius, SkBlurStyle style)
: INHERITED(name, rectWidth, rectHeight, blurRadius, style) {
}
protected:
bool makeMask(SkMask *m, const SkRect& r) override {
SkMask src;
r.roundOut(&src.fBounds);
src.fBounds.offset(-src.fBounds.fLeft, -src.fBounds.fTop); // move to origin
src.fFormat = SkMask::kA8_Format;
src.fRowBytes = src.fBounds.width();
src.fImage = SkMask::AllocImage(src.computeTotalImageSize());
SkAutoMaskFreeImage amfi(src.fImage);
memset(src.fImage, 0xff, src.computeTotalImageSize());
return SkBlurMask::BlurGroundTruth(SkBlurMask::ConvertRadiusToSigma(this->radius()),
m, src, this->style());
}
virtual SkBlurQuality getQuality() {
return kHigh_SkBlurQuality;
}
private:
typedef BlurRectCompareGM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new BlurRectGM("blurrects", 0xFF);)
DEF_GM(return new BlurRectDirectGM("blurrect_gallery");)