427 lines
13 KiB
C++
427 lines
13 KiB
C++
/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkBlurMask.h"
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#include "SkBlurMaskFilter.h"
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#include "SkCanvas.h"
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#include "SkPath.h"
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#define STROKE_WIDTH SkIntToScalar(10)
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typedef void (*Proc)(SkCanvas*, const SkRect&, const SkPaint&);
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static void fill_rect(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
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canvas->drawRect(r, p);
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}
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static void draw_donut(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
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SkRect rect;
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SkPath path;
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rect = r;
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rect.outset(STROKE_WIDTH/2, STROKE_WIDTH/2);
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path.addRect(rect);
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rect = r;
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rect.inset(STROKE_WIDTH/2, STROKE_WIDTH/2);
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path.addRect(rect);
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path.setFillType(SkPath::kEvenOdd_FillType);
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canvas->drawPath(path, p);
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}
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static void draw_donut_skewed(SkCanvas* canvas, const SkRect& r, const SkPaint& p) {
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SkRect rect;
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SkPath path;
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rect = r;
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rect.outset(STROKE_WIDTH/2, STROKE_WIDTH/2);
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path.addRect(rect);
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rect = r;
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rect.inset(STROKE_WIDTH/2, STROKE_WIDTH/2);
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rect.offset(7, -7);
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path.addRect(rect);
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path.setFillType(SkPath::kEvenOdd_FillType);
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canvas->drawPath(path, p);
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}
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#include "SkGradientShader.h"
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/*
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* Spits out a dummy gradient to test blur with shader on paint
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*/
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static SkShader* MakeRadial() {
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SkPoint pts[2] = {
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{ 0, 0 },
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{ SkIntToScalar(100), SkIntToScalar(100) }
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};
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SkShader::TileMode tm = SkShader::kClamp_TileMode;
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const SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, };
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const SkScalar pos[] = { SK_Scalar1/4, SK_Scalar1*3/4 };
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SkMatrix scale;
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scale.setScale(0.5f, 0.5f);
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scale.postTranslate(25.f, 25.f);
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SkPoint center0, center1;
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center0.set(SkScalarAve(pts[0].fX, pts[1].fX),
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SkScalarAve(pts[0].fY, pts[1].fY));
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center1.set(SkScalarInterp(pts[0].fX, pts[1].fX, SkIntToScalar(3)/5),
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SkScalarInterp(pts[0].fY, pts[1].fY, SkIntToScalar(1)/4));
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return SkGradientShader::CreateTwoPointRadial(center1, (pts[1].fX - pts[0].fX) / 7,
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center0, (pts[1].fX - pts[0].fX) / 2,
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colors, pos, SK_ARRAY_COUNT(colors), tm,
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0, &scale);
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}
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typedef void (*PaintProc)(SkPaint*, SkScalar width);
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class BlurRectGM : public skiagm::GM {
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SkAutoTUnref<SkMaskFilter> fMaskFilters[kLastEnum_SkBlurStyle + 1];
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SkString fName;
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SkAlpha fAlpha;
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public:
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BlurRectGM(const char name[], U8CPU alpha)
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: fName(name)
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, fAlpha(SkToU8(alpha)) {
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}
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protected:
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virtual void onOnceBeforeDraw() SK_OVERRIDE {
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for (int i = 0; i <= kLastEnum_SkBlurStyle; ++i) {
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fMaskFilters[i].reset(SkBlurMaskFilter::Create((SkBlurStyle)i,
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SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(STROKE_WIDTH/2)),
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SkBlurMaskFilter::kHighQuality_BlurFlag));
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}
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}
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virtual SkString onShortName() {
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return fName;
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}
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virtual SkISize onISize() {
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return SkISize::Make(860, 820);
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}
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virtual void onDraw(SkCanvas* canvas) {
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canvas->translate(STROKE_WIDTH*3/2, STROKE_WIDTH*3/2);
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SkRect r = { 0, 0, 100, 50 };
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SkScalar scales[] = { SK_Scalar1, 0.6f };
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for (size_t s = 0; s < SK_ARRAY_COUNT(scales); ++s) {
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canvas->save();
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for (size_t f = 0; f < SK_ARRAY_COUNT(fMaskFilters); ++f) {
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SkPaint paint;
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paint.setMaskFilter(fMaskFilters[f]);
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paint.setAlpha(fAlpha);
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SkPaint paintWithRadial = paint;
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paintWithRadial.setShader(MakeRadial())->unref();
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static const Proc procs[] = {
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fill_rect, draw_donut, draw_donut_skewed
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};
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canvas->save();
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canvas->scale(scales[s], scales[s]);
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this->drawProcs(canvas, r, paint, false, procs, SK_ARRAY_COUNT(procs));
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canvas->translate(r.width() * 4/3, 0);
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this->drawProcs(canvas, r, paintWithRadial, false, procs, SK_ARRAY_COUNT(procs));
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canvas->translate(r.width() * 4/3, 0);
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this->drawProcs(canvas, r, paint, true, procs, SK_ARRAY_COUNT(procs));
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canvas->translate(r.width() * 4/3, 0);
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this->drawProcs(canvas, r, paintWithRadial, true, procs, SK_ARRAY_COUNT(procs));
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canvas->restore();
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canvas->translate(0, SK_ARRAY_COUNT(procs) * r.height() * 4/3 * scales[s]);
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}
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canvas->restore();
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canvas->translate(4 * r.width() * 4/3 * scales[s], 0);
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}
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}
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virtual uint32_t onGetFlags() const { return kSkipPipe_Flag | kSkipTiled_Flag; }
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private:
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void drawProcs(SkCanvas* canvas, const SkRect& r, const SkPaint& paint,
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bool doClip, const Proc procs[], size_t procsCount) {
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SkAutoCanvasRestore acr(canvas, true);
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for (size_t i = 0; i < procsCount; ++i) {
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if (doClip) {
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SkRect clipRect(r);
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clipRect.inset(STROKE_WIDTH/2, STROKE_WIDTH/2);
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canvas->save();
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canvas->clipRect(r);
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}
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procs[i](canvas, r, paint);
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if (doClip) {
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canvas->restore();
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}
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canvas->translate(0, r.height() * 4/3);
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}
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}
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private:
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typedef GM INHERITED;
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};
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class BlurRectDirectGM : public skiagm::GM {
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SkString fName;
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int fGMWidth, fGMHeight;
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int fPadding, fMargin;
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public:
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BlurRectDirectGM(const char name[])
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: fName(name),
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fGMWidth(1200),
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fGMHeight(1024),
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fPadding(10),
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fMargin(100)
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{
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}
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protected:
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virtual SkString onShortName() {
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return fName;
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}
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virtual SkISize onISize() {
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return SkISize::Make(fGMWidth, fGMHeight);
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}
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virtual void onDraw(SkCanvas* canvas) {
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const int widths[] = {25, 5, 5, 100, 150, 25};
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const int heights[] = {100, 100, 5, 25, 150, 25};
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const SkBlurStyle styles[] = {kNormal_SkBlurStyle, kInner_SkBlurStyle, kOuter_SkBlurStyle};
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const float radii[] = {20, 5, 10};
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canvas->translate(50,20);
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int cur_x = 0;
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int cur_y = 0;
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int max_height = 0;
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for (size_t i = 0 ; i < SK_ARRAY_COUNT(widths) ; i++) {
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int width = widths[i];
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int height = heights[i];
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SkRect r;
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r.setWH(SkIntToScalar(width), SkIntToScalar(height));
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SkAutoCanvasRestore autoRestore(canvas, true);
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for (size_t j = 0 ; j < SK_ARRAY_COUNT(radii) ; j++) {
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float radius = radii[j];
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for (size_t k = 0 ; k < SK_ARRAY_COUNT(styles) ; k++) {
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SkBlurStyle style = styles[k];
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SkMask mask;
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SkBlurMask::BlurRect(SkBlurMask::ConvertRadiusToSigma(radius), &mask, r, style);
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SkAutoMaskFreeImage amfi(mask.fImage);
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SkBitmap bm;
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bm.installMaskPixels(mask);
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if (cur_x + bm.width() >= fGMWidth - fMargin) {
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cur_x = 0;
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cur_y += max_height + fPadding;
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max_height = 0;
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}
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canvas->save();
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canvas->translate((SkScalar)cur_x, (SkScalar)cur_y);
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canvas->translate(-(bm.width() - r.width())/2, -(bm.height()-r.height())/2);
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canvas->drawBitmap(bm, 0.f, 0.f, NULL);
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canvas->restore();
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cur_x += bm.width() + fPadding;
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if (bm.height() > max_height)
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max_height = bm.height();
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}
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}
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}
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}
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virtual uint32_t onGetFlags() const { return kSkipPipe_Flag; }
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private:
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typedef GM INHERITED;
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};
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class BlurRectCompareGM : public skiagm::GM {
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SkString fName;
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unsigned int fRectWidth, fRectHeight;
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SkScalar fRadius;
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SkBlurStyle fStyle;
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public:
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BlurRectCompareGM(const char name[], unsigned int rectWidth,
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unsigned int rectHeight, float radius,
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SkBlurStyle style)
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: fName(name)
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, fRectWidth(rectWidth)
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, fRectHeight(rectHeight)
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, fRadius(radius)
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, fStyle(style) {
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}
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int width() const {
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return fRectWidth;
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}
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int height() const {
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return fRectHeight;
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}
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SkScalar radius() const {
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return fRadius;
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}
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SkBlurStyle style() const {
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return fStyle;
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}
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protected:
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virtual SkString onShortName() {
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return fName;
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}
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virtual SkISize onISize() {
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return SkISize::Make(640, 480);
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}
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virtual bool makeMask(SkMask *m, const SkRect&) = 0;
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virtual void onDraw(SkCanvas* canvas) {
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SkRect r;
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r.setWH(SkIntToScalar(fRectWidth), SkIntToScalar(fRectHeight));
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SkISize canvas_size = canvas->getDeviceSize();
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int center_x = (canvas_size.fWidth - (int)(r.width()))/2;
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int center_y = (canvas_size.fHeight - (int)(r.height()))/2;
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SkMask mask;
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if (!this->makeMask(&mask, r)) {
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SkPaint paint;
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r.offset( SkIntToScalar(center_x), SkIntToScalar(center_y) );
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canvas->drawRect(r,paint);
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return;
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}
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SkAutoMaskFreeImage amfi(mask.fImage);
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SkBitmap bm;
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bm.installMaskPixels(mask);
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center_x = (canvas_size.fWidth - mask.fBounds.width())/2;
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center_y = (canvas_size.fHeight - mask.fBounds.height())/2;
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canvas->drawBitmap(bm, SkIntToScalar(center_x), SkIntToScalar(center_y), NULL);
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}
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virtual uint32_t onGetFlags() const { return kSkipPipe_Flag; }
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private:
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typedef GM INHERITED;
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};
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class BlurRectFastGM: public BlurRectCompareGM {
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public:
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BlurRectFastGM(const char name[], unsigned int rectWidth,
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unsigned int rectHeight, float blurRadius,
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SkBlurStyle style) :
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INHERITED(name, rectWidth, rectHeight, blurRadius, style) {
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}
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protected:
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virtual bool makeMask(SkMask *m, const SkRect& r) SK_OVERRIDE {
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return SkBlurMask::BlurRect(SkBlurMask::ConvertRadiusToSigma(this->radius()),
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m, r, this->style());
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}
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private:
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typedef BlurRectCompareGM INHERITED;
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};
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class BlurRectSlowGM: public BlurRectCompareGM {
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public:
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BlurRectSlowGM(const char name[], unsigned int rectWidth, unsigned int rectHeight,
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float blurRadius, SkBlurStyle style)
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: INHERITED(name, rectWidth, rectHeight, blurRadius, style) {
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}
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protected:
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virtual bool makeMask(SkMask *m, const SkRect& r) SK_OVERRIDE {
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SkMask src;
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r.roundOut(&src.fBounds);
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src.fBounds.offset(-src.fBounds.fLeft, -src.fBounds.fTop); // move to origin
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src.fFormat = SkMask::kA8_Format;
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src.fRowBytes = src.fBounds.width();
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src.fImage = SkMask::AllocImage(src.computeTotalImageSize());
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SkAutoMaskFreeImage amfi(src.fImage);
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memset(src.fImage, 0xff, src.computeTotalImageSize());
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return SkBlurMask::BoxBlur(m, src,
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SkBlurMask::ConvertRadiusToSigma(this->radius()),
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this->style(), this->getQuality());
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}
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virtual SkBlurQuality getQuality() {
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return kHigh_SkBlurQuality;
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}
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private:
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typedef BlurRectCompareGM INHERITED;
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};
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class BlurRectSlowLowGM: public BlurRectSlowGM {
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public:
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BlurRectSlowLowGM(const char name[], unsigned int rectWidth, unsigned int rectHeight,
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float blurRadius, SkBlurStyle style)
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: INHERITED(name, rectWidth, rectHeight, blurRadius, style) {
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}
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protected:
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virtual SkBlurQuality getQuality() SK_OVERRIDE {
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return kLow_SkBlurQuality;
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}
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private:
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typedef BlurRectSlowGM INHERITED;
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};
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class BlurRectGroundTruthGM: public BlurRectCompareGM {
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public:
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BlurRectGroundTruthGM(const char name[], unsigned int rectWidth, unsigned int rectHeight,
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float blurRadius, SkBlurStyle style)
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: INHERITED(name, rectWidth, rectHeight, blurRadius, style) {
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}
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protected:
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virtual bool makeMask(SkMask *m, const SkRect& r) SK_OVERRIDE {
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SkMask src;
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r.roundOut(&src.fBounds);
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src.fBounds.offset(-src.fBounds.fLeft, -src.fBounds.fTop); // move to origin
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src.fFormat = SkMask::kA8_Format;
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src.fRowBytes = src.fBounds.width();
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src.fImage = SkMask::AllocImage(src.computeTotalImageSize());
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SkAutoMaskFreeImage amfi(src.fImage);
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memset(src.fImage, 0xff, src.computeTotalImageSize());
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return SkBlurMask::BlurGroundTruth(SkBlurMask::ConvertRadiusToSigma(this->radius()),
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m, src, this->style());
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}
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virtual SkBlurQuality getQuality() {
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return kHigh_SkBlurQuality;
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}
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private:
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typedef BlurRectCompareGM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new BlurRectGM("blurrects", 0xFF);)
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DEF_GM(return new BlurRectDirectGM("blurrect_gallery");)
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