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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 "SkBlurMask.h"
#include "SkBlurMaskFilter.h"
#include "SkColorPriv.h"
#include "SkGradientShader.h"
#include "SkShader.h"
#include "SkImage.h"
static SkBitmap make_chessbm(int w, int h) {
SkBitmap bm;
bm.allocN32Pixels(w, h);
for (int y = 0; y < bm.height(); y++) {
uint32_t* p = bm.getAddr32(0, y);
for (int x = 0; x < bm.width(); x++) {
p[x] = ((x + y) & 1) ? SK_ColorWHITE : SK_ColorBLACK;
}
}
bm.unlockPixels();
return bm;
}
static SkImage* image_from_bitmap(const SkBitmap& bm) {
SkBitmap b(bm);
b.lockPixels();
return SkImage::NewRasterCopy(b.info(), b.getPixels(), b.rowBytes());
}
static SkImage* makebm(SkBitmap* bm, int w, int h) {
bm->allocN32Pixels(w, h);
bm->eraseColor(SK_ColorTRANSPARENT);
SkCanvas canvas(*bm);
SkScalar wScalar = SkIntToScalar(w);
SkScalar hScalar = SkIntToScalar(h);
SkPoint pt = { wScalar / 2, hScalar / 2 };
SkScalar radius = 4 * SkMaxScalar(wScalar, hScalar);
SkColor colors[] = { SK_ColorRED, SK_ColorYELLOW,
SK_ColorGREEN, SK_ColorMAGENTA,
SK_ColorBLUE, SK_ColorCYAN,
SK_ColorRED};
SkScalar pos[] = {0,
SK_Scalar1 / 6,
2 * SK_Scalar1 / 6,
3 * SK_Scalar1 / 6,
4 * SK_Scalar1 / 6,
5 * SK_Scalar1 / 6,
SK_Scalar1};
SkPaint paint;
SkRect rect = SkRect::MakeWH(wScalar, hScalar);
SkMatrix mat = SkMatrix::I();
for (int i = 0; i < 4; ++i) {
paint.setShader(SkGradientShader::CreateRadial(
pt, radius,
colors, pos,
SK_ARRAY_COUNT(colors),
SkShader::kRepeat_TileMode,
0, &mat))->unref();
canvas.drawRect(rect, paint);
rect.inset(wScalar / 8, hScalar / 8);
mat.postScale(SK_Scalar1 / 4, SK_Scalar1 / 4);
}
// Let backends know we won't change this, so they don't have to deep copy it defensively.
bm->setImmutable();
return image_from_bitmap(*bm);
}
static void canvasproc(SkCanvas* canvas, SkImage*, const SkBitmap& bm, const SkIRect* srcR,
const SkRect& dstR) {
canvas->drawBitmapRect(bm, srcR, dstR);
}
static void imageproc(SkCanvas* canvas, SkImage* image, const SkBitmap&, const SkIRect* srcIR,
const SkRect& dstR) {
SkRect storage, *srcR = NULL;
if (srcIR) {
storage.set(*srcIR);
srcR = &storage;
}
canvas->drawImageRect(image, srcR, dstR);
}
static void imagescaleproc(SkCanvas* canvas, SkImage* image, const SkBitmap&, const SkIRect* srcIR,
const SkRect& dstR) {
const int newW = SkScalarRoundToInt(dstR.width());
const int newH = SkScalarRoundToInt(dstR.height());
SkAutoTUnref<SkImage> newImage(image->newImage(newW, newH, srcIR));
#ifdef SK_DEBUG
const SkIRect baseR = SkIRect::MakeWH(image->width(), image->height());
const bool containsSubset = !srcIR || baseR.contains(*srcIR);
#endif
if (newImage) {
SkASSERT(containsSubset);
canvas->drawImage(newImage, dstR.x(), dstR.y());
} else {
// newImage() does not support subsets that are not contained by the original
// but drawImageRect does, so we just draw an X in its place to indicate that we are
// deliberately not drawing here.
SkASSERT(!containsSubset);
SkPaint paint;
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(4);
canvas->drawLine(4, 4, newW - 4.0f, newH - 4.0f, paint);
canvas->drawLine(4, newH - 4.0f, newW - 4.0f, 4, paint);
}
}
typedef void DrawRectRectProc(SkCanvas*, SkImage*, const SkBitmap&, const SkIRect*, const SkRect&);
static const int gSize = 1024;
static const int gBmpSize = 2048;
class DrawBitmapRectGM : public skiagm::GM {
public:
DrawBitmapRectGM(DrawRectRectProc proc, const char suffix[]) : fProc(proc) {
fName.set("drawbitmaprect");
if (suffix) {
fName.append(suffix);
}
}
DrawRectRectProc* fProc;
SkBitmap fLargeBitmap;
SkAutoTUnref<SkImage> fImage;
SkString fName;
protected:
SkString onShortName() override { return fName; }
SkISize onISize() override { return SkISize::Make(gSize, gSize); }
void onOnceBeforeDraw() override {
fImage.reset(makebm(&fLargeBitmap, gBmpSize, gBmpSize));
}
void onDraw(SkCanvas* canvas) override {
SkRect dstRect = { 0, 0, SkIntToScalar(64), SkIntToScalar(64)};
static const int kMaxSrcRectSize = 1 << (SkNextLog2(gBmpSize) + 2);
static const int kPadX = 30;
static const int kPadY = 40;
SkPaint paint;
paint.setAlpha(0x20);
canvas->drawBitmapRect(fLargeBitmap, NULL,
SkRect::MakeWH(gSize * SK_Scalar1,
gSize * SK_Scalar1),
&paint);
canvas->translate(SK_Scalar1 * kPadX / 2,
SK_Scalar1 * kPadY / 2);
SkPaint blackPaint;
SkScalar titleHeight = SK_Scalar1 * 24;
blackPaint.setColor(SK_ColorBLACK);
blackPaint.setTextSize(titleHeight);
blackPaint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&blackPaint);
SkString title;
title.printf("Bitmap size: %d x %d", gBmpSize, gBmpSize);
canvas->drawText(title.c_str(), title.size(), 0,
titleHeight, blackPaint);
canvas->translate(0, SK_Scalar1 * kPadY / 2 + titleHeight);
int rowCount = 0;
canvas->save();
for (int w = 1; w <= kMaxSrcRectSize; w *= 4) {
for (int h = 1; h <= kMaxSrcRectSize; h *= 4) {
SkIRect srcRect = SkIRect::MakeXYWH((gBmpSize - w) / 2, (gBmpSize - h) / 2, w, h);
fProc(canvas, fImage, fLargeBitmap, &srcRect, dstRect);
SkString label;
label.appendf("%d x %d", w, h);
blackPaint.setAntiAlias(true);
blackPaint.setStyle(SkPaint::kFill_Style);
blackPaint.setTextSize(SK_Scalar1 * 10);
SkScalar baseline = dstRect.height() +
blackPaint.getTextSize() + SK_Scalar1 * 3;
canvas->drawText(label.c_str(), label.size(),
0, baseline,
blackPaint);
blackPaint.setStyle(SkPaint::kStroke_Style);
blackPaint.setStrokeWidth(SK_Scalar1);
blackPaint.setAntiAlias(false);
canvas->drawRect(dstRect, blackPaint);
canvas->translate(dstRect.width() + SK_Scalar1 * kPadX, 0);
++rowCount;
if ((dstRect.width() + kPadX) * rowCount > gSize) {
canvas->restore();
canvas->translate(0, dstRect.height() + SK_Scalar1 * kPadY);
canvas->save();
rowCount = 0;
}
}
}
{
// test the following code path:
// SkGpuDevice::drawPath() -> SkGpuDevice::drawWithMaskFilter()
SkIRect srcRect;
SkPaint paint;
SkBitmap bm;
bm = make_chessbm(5, 5);
paint.setFilterQuality(kLow_SkFilterQuality);
srcRect.setXYWH(1, 1, 3, 3);
SkMaskFilter* mf = SkBlurMaskFilter::Create(
kNormal_SkBlurStyle,
SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5)),
SkBlurMaskFilter::kHighQuality_BlurFlag |
SkBlurMaskFilter::kIgnoreTransform_BlurFlag);
paint.setMaskFilter(mf)->unref();
canvas->drawBitmapRect(bm, &srcRect, dstRect, &paint);
}
}
private:
typedef skiagm::GM INHERITED;
};
DEF_GM( return new DrawBitmapRectGM(canvasproc, NULL); )
DEF_GM( return new DrawBitmapRectGM(imageproc, "-imagerect"); )
DEF_GM( return new DrawBitmapRectGM(imagescaleproc, "-imagescale"); )
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