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241 lines
8.0 KiB
241 lines
8.0 KiB
/*
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* Copyright 2011 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 "sk_tool_utils.h"
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#include "SkBlurMask.h"
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#include "SkBlurMaskFilter.h"
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#include "SkColorPriv.h"
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#include "SkGradientShader.h"
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#include "SkImage.h"
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#include "SkImage_Base.h"
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#include "SkMathPriv.h"
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#include "SkShader.h"
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#include "SkSurface.h"
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static SkBitmap make_chessbm(int w, int h) {
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SkBitmap bm;
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bm.allocN32Pixels(w, h);
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for (int y = 0; y < bm.height(); y++) {
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uint32_t* p = bm.getAddr32(0, y);
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for (int x = 0; x < bm.width(); x++) {
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p[x] = ((x + y) & 1) ? SK_ColorWHITE : SK_ColorBLACK;
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}
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}
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return bm;
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}
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// Creates a bitmap and a matching image.
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static sk_sp<SkImage> makebm(SkCanvas* origCanvas, SkBitmap* resultBM, int w, int h) {
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SkImageInfo info = SkImageInfo::MakeN32Premul(w, h);
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auto surface(sk_tool_utils::makeSurface(origCanvas, info));
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SkCanvas* canvas = surface->getCanvas();
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canvas->clear(SK_ColorTRANSPARENT);
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SkScalar wScalar = SkIntToScalar(w);
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SkScalar hScalar = SkIntToScalar(h);
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SkPoint pt = { wScalar / 2, hScalar / 2 };
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SkScalar radius = 4 * SkMaxScalar(wScalar, hScalar);
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SkColor colors[] = { SK_ColorRED, SK_ColorYELLOW,
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SK_ColorGREEN, SK_ColorMAGENTA,
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SK_ColorBLUE, SK_ColorCYAN,
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SK_ColorRED};
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SkScalar pos[] = {0,
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SK_Scalar1 / 6,
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2 * SK_Scalar1 / 6,
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3 * SK_Scalar1 / 6,
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4 * SK_Scalar1 / 6,
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5 * SK_Scalar1 / 6,
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SK_Scalar1};
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SkPaint paint;
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SkRect rect = SkRect::MakeWH(wScalar, hScalar);
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SkMatrix mat = SkMatrix::I();
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for (int i = 0; i < 4; ++i) {
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paint.setShader(SkGradientShader::MakeRadial(
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pt, radius,
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colors, pos,
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SK_ARRAY_COUNT(colors),
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SkShader::kRepeat_TileMode,
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0, &mat));
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canvas->drawRect(rect, paint);
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rect.inset(wScalar / 8, hScalar / 8);
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mat.postScale(SK_Scalar1 / 4, SK_Scalar1 / 4);
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}
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auto image = surface->makeImageSnapshot();
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SkBitmap tempBM;
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image->asLegacyBitmap(&tempBM);
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// Let backends know we won't change this, so they don't have to deep copy it defensively.
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tempBM.setImmutable();
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*resultBM = tempBM;
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return image;
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}
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static void bitmapproc(SkCanvas* canvas, SkImage*, const SkBitmap& bm, const SkIRect& srcR,
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const SkRect& dstR, const SkPaint* paint) {
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canvas->drawBitmapRect(bm, srcR, dstR, paint);
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}
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static void bitmapsubsetproc(SkCanvas* canvas, SkImage*, const SkBitmap& bm, const SkIRect& srcR,
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const SkRect& dstR, const SkPaint* paint) {
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if (!bm.bounds().contains(srcR)) {
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bitmapproc(canvas, nullptr, bm, srcR, dstR, paint);
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return;
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}
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SkBitmap subset;
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if (bm.extractSubset(&subset, srcR)) {
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canvas->drawBitmapRect(subset, dstR, paint);
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}
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}
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static void imageproc(SkCanvas* canvas, SkImage* image, const SkBitmap&, const SkIRect& srcR,
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const SkRect& dstR, const SkPaint* paint) {
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canvas->drawImageRect(image, srcR, dstR, paint);
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}
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static void imagesubsetproc(SkCanvas* canvas, SkImage* image, const SkBitmap& bm,
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const SkIRect& srcR, const SkRect& dstR, const SkPaint* paint) {
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if (!image->bounds().contains(srcR)) {
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imageproc(canvas, image, bm, srcR, dstR, paint);
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return;
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}
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if (sk_sp<SkImage> subset = image->makeSubset(srcR)) {
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canvas->drawImageRect(subset, dstR, paint);
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}
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}
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typedef void DrawRectRectProc(SkCanvas*, SkImage*, const SkBitmap&, const SkIRect&, const SkRect&,
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const SkPaint*);
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constexpr int gSize = 1024;
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constexpr int gBmpSize = 2048;
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class DrawBitmapRectGM : public skiagm::GM {
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public:
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DrawBitmapRectGM(DrawRectRectProc proc, const char suffix[]) : fProc(proc) {
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fName.set("drawbitmaprect");
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if (suffix) {
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fName.append(suffix);
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}
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}
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DrawRectRectProc* fProc;
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SkBitmap fLargeBitmap;
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sk_sp<SkImage> fImage;
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SkString fName;
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protected:
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SkString onShortName() override { return fName; }
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SkISize onISize() override { return SkISize::Make(gSize, gSize); }
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void setupImage(SkCanvas* canvas) {
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fImage = makebm(canvas, &fLargeBitmap, gBmpSize, gBmpSize);
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}
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void onDraw(SkCanvas* canvas) override {
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if (!fImage || !fImage->isValid(canvas->getGrContext())) {
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this->setupImage(canvas);
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}
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SkRect dstRect = { 0, 0, SkIntToScalar(64), SkIntToScalar(64)};
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const int kMaxSrcRectSize = 1 << (SkNextLog2(gBmpSize) + 2);
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const int kPadX = 30;
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const int kPadY = 40;
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SkPaint paint;
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paint.setAlpha(0x20);
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canvas->drawImageRect(fImage, SkRect::MakeIWH(gSize, gSize), &paint);
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canvas->translate(SK_Scalar1 * kPadX / 2,
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SK_Scalar1 * kPadY / 2);
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SkPaint blackPaint;
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SkScalar titleHeight = SK_Scalar1 * 24;
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blackPaint.setColor(SK_ColorBLACK);
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blackPaint.setAntiAlias(true);
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SkFont font(sk_tool_utils::create_portable_typeface(), titleHeight);
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SkString title;
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title.printf("Bitmap size: %d x %d", gBmpSize, gBmpSize);
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canvas->drawString(title, 0, titleHeight, font, blackPaint);
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canvas->translate(0, SK_Scalar1 * kPadY / 2 + titleHeight);
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int rowCount = 0;
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canvas->save();
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for (int w = 1; w <= kMaxSrcRectSize; w *= 4) {
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for (int h = 1; h <= kMaxSrcRectSize; h *= 4) {
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SkIRect srcRect = SkIRect::MakeXYWH((gBmpSize - w) / 2, (gBmpSize - h) / 2, w, h);
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fProc(canvas, fImage.get(), fLargeBitmap, srcRect, dstRect, nullptr);
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SkString label;
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label.appendf("%d x %d", w, h);
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blackPaint.setAntiAlias(true);
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blackPaint.setStyle(SkPaint::kFill_Style);
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font.setSize(SK_Scalar1 * 10);
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SkScalar baseline = dstRect.height() + font.getSize() + SK_Scalar1 * 3;
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canvas->drawString(label, 0, baseline, font, blackPaint);
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blackPaint.setStyle(SkPaint::kStroke_Style);
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blackPaint.setStrokeWidth(SK_Scalar1);
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blackPaint.setAntiAlias(false);
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canvas->drawRect(dstRect, blackPaint);
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canvas->translate(dstRect.width() + SK_Scalar1 * kPadX, 0);
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++rowCount;
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if ((dstRect.width() + kPadX) * rowCount > gSize) {
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canvas->restore();
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canvas->translate(0, dstRect.height() + SK_Scalar1 * kPadY);
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canvas->save();
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rowCount = 0;
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}
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}
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}
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{
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// test the following code path:
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// SkGpuDevice::drawPath() -> SkGpuDevice::drawWithMaskFilter()
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SkIRect srcRect;
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SkPaint paint;
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SkBitmap bm;
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bm = make_chessbm(5, 5);
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paint.setFilterQuality(kLow_SkFilterQuality);
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srcRect.setXYWH(1, 1, 3, 3);
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paint.setMaskFilter(SkMaskFilter::MakeBlur(
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kNormal_SkBlurStyle,
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SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5))));
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sk_sp<SkImage> image(SkImage::MakeFromBitmap(bm));
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fProc(canvas, image.get(), bm, srcRect, dstRect, &paint);
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}
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}
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private:
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typedef skiagm::GM INHERITED;
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};
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DEF_GM( return new DrawBitmapRectGM(bitmapproc , nullptr); )
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DEF_GM( return new DrawBitmapRectGM(bitmapsubsetproc, "-subset"); )
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DEF_GM( return new DrawBitmapRectGM(imageproc , "-imagerect"); )
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DEF_GM( return new DrawBitmapRectGM(imagesubsetproc , "-imagerect-subset"); )
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