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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.h"
#include "SkSurface.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);
auto surface = root->makeSurface(info);
if (!surface) {
surface = SkSurface::MakeRaster(info);
}
return surface;
}
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 SkTSize<SkScalar> 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.fFlags = 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);
}
}
// 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::Flags flags[36];
sk_bzero(flags, 36 * sizeof(SkCanvas::Lattice::Flags));
flags[4] = SkCanvas::Lattice::kTransparent_Flags;
flags[9] = SkCanvas::Lattice::kTransparent_Flags;
flags[12] = SkCanvas::Lattice::kTransparent_Flags;
flags[19] = SkCanvas::Lattice::kTransparent_Flags;
lattice.fFlags = flags;
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; )
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