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- /*
- * Copyright 2016 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "gm/gm.h"
- #include "include/core/SkBitmap.h"
- #include "include/core/SkBlendMode.h"
- #include "include/core/SkCanvas.h"
- #include "include/core/SkColor.h"
- #include "include/core/SkImage.h"
- #include "include/core/SkImageInfo.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkRect.h"
- #include "include/core/SkRefCnt.h"
- #include "include/core/SkScalar.h"
- #include "include/core/SkSize.h"
- #include "include/core/SkString.h"
- #include "include/core/SkSurface.h"
- #include "include/private/SkMalloc.h"
- #include "tools/ToolUtils.h"
- static sk_sp<SkSurface> make_surface(SkCanvas* root, int N, int padLeft, int padTop,
- int padRight, int padBottom) {
- SkImageInfo info = SkImageInfo::MakeN32Premul(N + padLeft + padRight, N + padTop + padBottom);
- return ToolUtils::makeSurface(root, info);
- }
- static sk_sp<SkImage> make_image(SkCanvas* root, int* xDivs, int* yDivs, int padLeft, int padTop,
- int padRight, int padBottom) {
- const int kCap = 28;
- const int kMid = 8;
- const int kSize = 2*kCap + 3*kMid;
- auto surface(make_surface(root, kSize, padLeft, padTop, padRight, padBottom));
- SkCanvas* canvas = surface->getCanvas();
- canvas->translate((float) padLeft, (float) padTop);
- SkRect r = SkRect::MakeWH(SkIntToScalar(kSize), SkIntToScalar(kSize));
- const SkScalar strokeWidth = SkIntToScalar(6);
- const SkScalar radius = SkIntToScalar(kCap) - strokeWidth/2;
- xDivs[0] = kCap + padLeft;
- yDivs[0] = kCap + padTop;
- xDivs[1] = kCap + kMid + padLeft;
- yDivs[1] = kCap + kMid + padTop;
- xDivs[2] = kCap + 2 * kMid + padLeft;
- yDivs[2] = kCap + 2 * kMid + padTop;
- xDivs[3] = kCap + 3 * kMid + padLeft;
- yDivs[3] = kCap + 3 * kMid + padTop;
- SkPaint paint;
- paint.setAntiAlias(true);
- paint.setColor(0xFFFFFF00);
- canvas->drawRoundRect(r, radius, radius, paint);
- r.setXYWH(SkIntToScalar(kCap), 0, SkIntToScalar(kMid), SkIntToScalar(kSize));
- paint.setColor(0x8800FF00);
- canvas->drawRect(r, paint);
- r.setXYWH(SkIntToScalar(kCap + kMid), 0, SkIntToScalar(kMid), SkIntToScalar(kSize));
- paint.setColor(0x880000FF);
- canvas->drawRect(r, paint);
- r.setXYWH(SkIntToScalar(kCap + 2*kMid), 0, SkIntToScalar(kMid), SkIntToScalar(kSize));
- paint.setColor(0x88FF00FF);
- canvas->drawRect(r, paint);
- r.setXYWH(0, SkIntToScalar(kCap), SkIntToScalar(kSize), SkIntToScalar(kMid));
- paint.setColor(0x8800FF00);
- canvas->drawRect(r, paint);
- r.setXYWH(0, SkIntToScalar(kCap + kMid), SkIntToScalar(kSize), SkIntToScalar(kMid));
- paint.setColor(0x880000FF);
- canvas->drawRect(r, paint);
- r.setXYWH(0, SkIntToScalar(kCap + 2*kMid), SkIntToScalar(kSize), SkIntToScalar(kMid));
- paint.setColor(0x88FF00FF);
- canvas->drawRect(r, paint);
- return surface->makeImageSnapshot();
- }
- static void image_to_bitmap(const SkImage* image, SkBitmap* bm) {
- SkImageInfo info = SkImageInfo::MakeN32Premul(image->width(), image->height());
- bm->allocPixels(info);
- image->readPixels(info, bm->getPixels(), bm->rowBytes(), 0, 0);
- }
- /**
- * This is similar to NinePatchStretchGM, but it also tests "ninepatch" images with more
- * than nine patches.
- */
- class LatticeGM : public skiagm::GM {
- public:
- LatticeGM() {}
- protected:
- SkString onShortName() override {
- return SkString("lattice");
- }
- SkISize onISize() override {
- return SkISize::Make(800, 800);
- }
- void onDrawHelper(SkCanvas* canvas, int padLeft, int padTop, int padRight, int padBottom) {
- canvas->save();
- int xDivs[5];
- int yDivs[5];
- xDivs[0] = padLeft;
- yDivs[0] = padTop;
- SkBitmap bitmap;
- sk_sp<SkImage> image = make_image(canvas, xDivs + 1, yDivs + 1, padLeft, padTop,
- padRight, padBottom);
- image_to_bitmap(image.get(), &bitmap);
- const SkSize size[] = {
- { 50, 50, }, // shrink in both axes
- { 50, 200, }, // shrink in X
- { 200, 50, }, // shrink in Y
- { 200, 200, },
- };
- canvas->drawImage(image, 10, 10, nullptr);
- SkScalar x = SkIntToScalar(100);
- SkScalar y = SkIntToScalar(100);
- SkCanvas::Lattice lattice;
- lattice.fXCount = 4;
- lattice.fXDivs = xDivs + 1;
- lattice.fYCount = 4;
- lattice.fYDivs = yDivs + 1;
- lattice.fRectTypes = nullptr;
- lattice.fColors = nullptr;
- SkIRect bounds = SkIRect::MakeLTRB(padLeft, padTop,
- image->width() - padRight, image->height() - padBottom);
- lattice.fBounds = (bounds == SkIRect::MakeWH(image->width(), image->height())) ?
- nullptr : &bounds;
- for (int iy = 0; iy < 2; ++iy) {
- for (int ix = 0; ix < 2; ++ix) {
- int i = ix * 2 + iy;
- SkRect r = SkRect::MakeXYWH(x + ix * 60, y + iy * 60,
- size[i].width(), size[i].height());
- canvas->drawBitmapLattice(bitmap, lattice, r);
- }
- }
- // Provide hints about 3 solid color rects. These colors match
- // what was already in the bitmap.
- int fixedColorX[3] = {2, 4, 1};
- int fixedColorY[3] = {1, 1, 2};
- SkColor fixedColor[3] = {SK_ColorBLACK, SK_ColorBLACK, SK_ColorBLACK};
- const SkImageInfo info = SkImageInfo::Make(1, 1, kBGRA_8888_SkColorType,
- kUnpremul_SkAlphaType);
- for (int rectNum = 0; rectNum < 3; rectNum++) {
- int srcX = xDivs[fixedColorX[rectNum]-1];
- int srcY = yDivs[fixedColorY[rectNum]-1];
- image->readPixels(info, &fixedColor[rectNum], 4, srcX, srcY);
- }
- // Include the degenerate first div. While normally the first patch is "scalable",
- // this will mean that the first non-degenerate patch is "fixed".
- lattice.fXCount = 5;
- lattice.fXDivs = xDivs;
- lattice.fYCount = 5;
- lattice.fYDivs = yDivs;
- // Let's skip a few rects.
- SkCanvas::Lattice::RectType flags[36];
- sk_bzero(flags, 36 * sizeof(SkCanvas::Lattice::RectType));
- flags[4] = SkCanvas::Lattice::kTransparent;
- flags[9] = SkCanvas::Lattice::kTransparent;
- flags[12] = SkCanvas::Lattice::kTransparent;
- flags[19] = SkCanvas::Lattice::kTransparent;
- for (int rectNum = 0; rectNum < 3; rectNum++) {
- flags[fixedColorY[rectNum]*6 + fixedColorX[rectNum]]
- = SkCanvas::Lattice::kFixedColor;
- }
- lattice.fRectTypes = flags;
- SkColor colors[36];
- sk_bzero(colors, 36 * sizeof(SkColor));
- for (int rectNum = 0; rectNum < 3; rectNum++) {
- colors[fixedColorY[rectNum]*6 + fixedColorX[rectNum]]
- = fixedColor[rectNum];
- }
- lattice.fColors = colors;
- canvas->translate(400, 0);
- for (int iy = 0; iy < 2; ++iy) {
- for (int ix = 0; ix < 2; ++ix) {
- int i = ix * 2 + iy;
- SkRect r = SkRect::MakeXYWH(x + ix * 60, y + iy * 60,
- size[i].width(), size[i].height());
- canvas->drawImageLattice(image.get(), lattice, r);
- }
- }
- canvas->restore();
- }
- void onDraw(SkCanvas* canvas) override {
- this->onDrawHelper(canvas, 0, 0, 0, 0);
- canvas->translate(0.0f, 400.0f);
- this->onDrawHelper(canvas, 3, 7, 4, 11);
- }
- private:
- typedef skiagm::GM INHERITED;
- };
- DEF_GM( return new LatticeGM; )
- // LatticeGM2 exercises code paths that draw fixed color and 1x1 rectangles.
- class LatticeGM2 : public skiagm::GM {
- public:
- LatticeGM2() {}
- SkString onShortName() override {
- return SkString("lattice2");
- }
- SkISize onISize() override {
- return SkISize::Make(800, 800);
- }
- sk_sp<SkImage> makeImage(SkCanvas* root, int padLeft, int padTop, int padRight, int padBottom) {
- const int kSize = 80;
- auto surface(make_surface(root, kSize, padLeft, padTop, padRight, padBottom));
- SkCanvas* canvas = surface->getCanvas();
- SkPaint paint;
- paint.setAntiAlias(false);
- SkRect r;
- //first line
- r.setXYWH(0, 0, 4, 1); //4x1 green rect
- paint.setColor(0xFF00FF00);
- canvas->drawRect(r, paint);
- r.setXYWH(4, 0, 1, 1); //1x1 blue pixel -> draws as rectangle
- paint.setColor(0xFF0000FF);
- canvas->drawRect(r, paint);
- r.setXYWH(5, 0, kSize-5, 1); //the rest of the line is red
- paint.setColor(0xFFFF0000);
- canvas->drawRect(r, paint);
- //second line -> draws as fixed color rectangles
- r.setXYWH(0, 1, 4, 1); //4x1 red rect
- paint.setColor(0xFFFF0000);
- canvas->drawRect(r, paint);
- r.setXYWH(4, 1, 1, 1); //1x1 blue pixel with alpha
- paint.setColor(0x880000FF);
- canvas->drawRect(r, paint);
- r.setXYWH(5, 1, kSize-5, 1); //the rest of the line is green
- paint.setColor(0xFF00FF00);
- canvas->drawRect(r, paint);
- //third line - does not draw, because it is transparent
- r.setXYWH(0, 2, 4, kSize-2); //4x78 green rect
- paint.setColor(0xFF00FF00);
- canvas->drawRect(r, paint);
- r.setXYWH(4, 2, 1, kSize-2); //1x78 red pixel with alpha
- paint.setColor(0x88FF0000);
- canvas->drawRect(r, paint);
- r.setXYWH(5, 2, kSize-5, kSize-2); //the rest of the image is blue
- paint.setColor(0xFF0000FF);
- canvas->drawRect(r, paint);
- return surface->makeImageSnapshot();
- }
- void onDrawHelper(SkCanvas* canvas, int padLeft, int padTop, int padRight, int padBottom,
- SkPaint& paint) {
- int xDivs[2] = {4, 5};
- int yDivs[2] = {1, 2};
- canvas->save();
- sk_sp<SkImage> image = makeImage(canvas, padLeft, padTop, padRight, padBottom);
- canvas->drawImage(image, 10, 10, nullptr);
- SkCanvas::Lattice lattice;
- lattice.fXCount = 2;
- lattice.fXDivs = xDivs;
- lattice.fYCount = 2;
- lattice.fYDivs = yDivs;
- lattice.fBounds = nullptr;
- SkCanvas::Lattice::RectType flags[9];
- sk_bzero(flags, 9 * sizeof(SkCanvas::Lattice::RectType));
- flags[3] = SkCanvas::Lattice::kFixedColor;
- flags[4] = SkCanvas::Lattice::kFixedColor;
- flags[5] = SkCanvas::Lattice::kFixedColor;
- flags[6] = SkCanvas::Lattice::kTransparent;
- flags[7] = SkCanvas::Lattice::kTransparent;
- flags[8] = SkCanvas::Lattice::kTransparent;
- lattice.fRectTypes = flags;
- SkColor colors[9] = {SK_ColorBLACK, SK_ColorBLACK, SK_ColorBLACK,
- 0xFFFF0000, 0x880000FF, 0xFF00FF00,
- SK_ColorBLACK, SK_ColorBLACK, SK_ColorBLACK};
- lattice.fColors = colors;
- paint.setColor(0xFFFFFFFF);
- canvas->drawImageLattice(image.get(), lattice,
- SkRect::MakeXYWH(100, 100, 200, 200), &paint);
- //draw the same content with alpha
- canvas->translate(400, 0);
- paint.setColor(0x80000FFF);
- canvas->drawImageLattice(image.get(), lattice,
- SkRect::MakeXYWH(100, 100, 200, 200), &paint);
- canvas->restore();
- }
- void onDraw(SkCanvas* canvas) override {
- //draw a rectangle in the background with transparent pixels
- SkPaint paint;
- paint.setColor(0x7F123456);
- paint.setBlendMode(SkBlendMode::kSrc);
- canvas->drawRect( SkRect::MakeXYWH(300, 0, 300, 800), paint);
- //draw image lattice with kSrcOver blending
- paint.setBlendMode(SkBlendMode::kSrcOver);
- this->onDrawHelper(canvas, 0, 0, 0, 0, paint);
- //draw image lattice with kSrcATop blending
- canvas->translate(0.0f, 400.0f);
- paint.setBlendMode(SkBlendMode::kSrcATop);
- this->onDrawHelper(canvas, 0, 0, 0, 0, paint);
- }
- private:
- typedef skiagm::GM INHERITED;
- };
- DEF_GM( return new LatticeGM2; )
- // Code paths that incorporate the paint color when drawing the lattice (using an alpha image)
- DEF_SIMPLE_GM_BG(lattice_alpha, canvas, 120, 120, SK_ColorWHITE) {
- auto surface = ToolUtils::makeSurface(canvas, SkImageInfo::MakeA8(100, 100));
- surface->getCanvas()->clear(0);
- surface->getCanvas()->drawCircle(50, 50, 50, SkPaint());
- auto image = surface->makeImageSnapshot();
- int divs[] = { 20, 40, 60, 80 };
- SkCanvas::Lattice lattice;
- lattice.fXCount = 4;
- lattice.fXDivs = divs;
- lattice.fYCount = 4;
- lattice.fYDivs = divs;
- lattice.fRectTypes = nullptr;
- lattice.fColors = nullptr;
- lattice.fBounds = nullptr;
- SkPaint paint;
- paint.setColor(SK_ColorMAGENTA);
- canvas->drawImageLattice(image.get(), lattice, SkRect::MakeWH(120, 120), &paint);
- }
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