skia2/docs/examples/Surface_MakeRenderTarget_2.cpp

// Copyright 2019 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "tools/fiddle/examples.h"
// HASH=640321e8ecfb3f9329f3bc6e1f02485f
REG_FIDDLE(Surface_MakeRenderTarget_2, 256, 256, false, 0) {
void draw(SkCanvas* canvas) {
    auto test_draw = [](SkCanvas* surfaceCanvas) -> void {
        SkFont font(nullptr, 32);

        SkPaint paint;
        paint.setAntiAlias(true);
        // TODO: where did this setting go?
        //paint.setLCDRenderText(true);
        paint.setColor(0xFFBBBBBB);

        surfaceCanvas->drawRect(SkRect::MakeWH(128, 64), paint);
        paint.setColor(SK_ColorWHITE);
        surfaceCanvas->drawString("Text", 0, 25, font, paint);
    };
    auto context = canvas->recordingContext();
    SkImageInfo info = SkImageInfo::MakeN32(128, 64, kOpaque_SkAlphaType);
    int y = 0;
    for (auto geometry : { kRGB_H_SkPixelGeometry, kBGR_H_SkPixelGeometry,
                           kRGB_V_SkPixelGeometry, kBGR_V_SkPixelGeometry } ) {
        SkSurfaceProps props(0, geometry);
        sk_sp<SkSurface> surface = context
                        ? SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, info, 0, &props)
                        : SkSurface::MakeRaster(info, &props);
        test_draw(surface->getCanvas());
        surface->draw(canvas, 0, y, nullptr);
        sk_sp<SkImage> image(surface->makeImageSnapshot());
        SkAutoCanvasRestore acr(canvas, true);
        canvas->scale(8, 8);
        canvas->drawImage(image, 12, y / 8);
        y += 64;
    }
}
}  // END FIDDLE