Skia Fiddle

Options

Width Height

check_box_outline_blank check_box Text Only [Use SkDebugf()]

check_box_outline_blank check_box sRGB

check_box_outline_blank check_box F16

check_box_outline_blank check_box Animation

check_box_outline_blank check_box Offscreen Render Target

Width Height Sample Count

check_box_outline_blank check_box Texturable

check_box_outline_blank check_box MipMap

This global is now defined:

GrBackendRenderTarget backEndRenderTarget;

GrBackendTexture backEndTextureRenderTarget;

Optional source image

check_box_outline_blank check_box MipMap

These globals are now defined:

SkBitmap source;
sk_sp<SkImage> image;
GrBackendTexture backEndTexture; // GPU Only.

Note:

Adding comments with SK_FOLD_START and SK_FOLD_END creates foldable code blocks.
These blocks will be folded by default and are useful for highlighting specific lines of code.
You can also use the keyboard shortcuts Ctrl+S and Ctrl+E in the code editor to set them.

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void draw(SkCanvas* canvas) {
    SkPaint paint;
    paint.setAntiAlias(true);
    SkRRect rrect;
    rrect.setRectXY({40, 40, 215, 215}, 50, 50);
    SkPath path;
    path.addRRect(rrect);
    canvas->drawPath(path, paint);
    for (int start = 0; start < 8; ++start) {
        SkPath textPath;
        textPath.addRRect(rrect, SkPathDirection::kCW, start);
        SkPathMeasure pathMeasure(textPath, false);
        SkPoint position;
        SkVector tangent;
        if (!pathMeasure.getPosTan(0, &position, &tangent)) {
            continue;
        }
        SkRSXform rsxForm = SkRSXform::Make(tangent.fX, tangent.fY,
               position.fX + tangent.fY * 5, position.fY - tangent.fX * 5);
        SkFont font(fontMgr->matchFamilyStyle(nullptr, {}), 12);
        auto labels = SkTextBlob::MakeFromRSXform(&"01234567"[start], 1, &rsxForm, font);
        canvas->drawTextBlob(labels, 0, 0, paint);
    }
}