skia.org: Update all fiddles for fiddle 2.0.
The images won't show up in the preview, which won't happen until I switch over to fiddle 2.0 in production later today. BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1910593005 NOTRY=true DOCS_PREVIEW= https://skia.org/?cl=1910593005 Review URL: https://codereview.chromium.org/1910593005
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@ -19,39 +19,39 @@ Click on any image below to see the source code that generated the image.
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<tr><th>Shapes</th><th>Bézier Curves</th></tr>
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<tr>
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<td>
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<a href="https://fiddle.skia.org/c/95552fd2a4b8acacc05a63825cca854e"><img src="https://fiddle.skia.org/i/95552fd2a4b8acacc05a63825cca854e_raster.png"></a>
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<a href='https://fiddle.skia.org/c/@shapes'><img src='https://fiddle.skia.org/c/@shapes_raster.png'></a>
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</td>
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<td>
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<a href="https://fiddle.skia.org/c/79928f82141e6f76ae1ea30c41d80a17"><img src="https://fiddle.skia.org/i/79928f82141e6f76ae1ea30c41d80a17_raster.png"></a>
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<a href='https://fiddle.skia.org/c/@bezier_curves'><img src='https://fiddle.skia.org/c/@bezier_curves_raster.png'></a>
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</td>
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</tr>
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<tr><th>Translations and Rotations</th><th>Text Rendering</th></tr>
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<tr>
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<td>
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<a href="https://fiddle.skia.org/c/c6ba5c36dc535655a66c05f3149a54c3"><img src="https://fiddle.skia.org/i/c6ba5c36dc535655a66c05f3149a54c3_raster.png"></a>
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<a href='https://fiddle.skia.org/c/@rotations'><img src='https://fiddle.skia.org/c/@rotations_raster.png'></a>
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</td>
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<td>
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<a href="https://fiddle.skia.org/c/ec367821b22171bdc66f36a2e73ee92b"><img src="https://fiddle.skia.org/i/ec367821b22171bdc66f36a2e73ee92b_raster.png"></a>
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<a href='https://fiddle.skia.org/c/@text_rendering'><img src='https://fiddle.skia.org/c/@text_rendering_raster.png'></a>
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</td>
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</tr>
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<tr><th>Discrete Path Effects</th><th>Composed Path Effects</th></tr>
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<tr>
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<td>
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<a href="https://fiddle.skia.org/c/297da5f57b71c91b5a3bab4db9673cc4"><img src="https://fiddle.skia.org/i/297da5f57b71c91b5a3bab4db9673cc4_raster.png" alt=""></a>
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<a href='https://fiddle.skia.org/c/@discrete_path'><img src='https://fiddle.skia.org/c/@discrete_path_raster.png'></a>
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</td>
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<td>
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<a href="https://fiddle.skia.org/c/df5928f1f3173878e5f647a2dbb2d250"><img src="https://fiddle.skia.org/i/df5928f1f3173878e5f647a2dbb2d250_raster.png" alt=""></a>
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<a href='https://fiddle.skia.org/c/@compose_path'><img src='https://fiddle.skia.org/c/@compose_path_raster.png'></a>
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</td>
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</tr>
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<tr><th>Sum Path Effects</th><th>Shaders</th></tr>
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<tr>
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<td>
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<a href="https://fiddle.skia.org/c/2cc23c611102ba01616c775ebc4308d6"><img src="https://fiddle.skia.org/i/2cc23c611102ba01616c775ebc4308d6_raster.png" alt=""></a>
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<a href='https://fiddle.skia.org/c/@sum_path_effect'><img src='https://fiddle.skia.org/c/@sum_path_effect_raster.png'></a>
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</td>
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<td>
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<a href="https://fiddle.skia.org/c/0261e010db41116bc1e1c045900e0dc3"> <img src="https://fiddle.skia.org/i/0261e010db41116bc1e1c045900e0dc3_raster.png"></a>
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<a href='https://fiddle.skia.org/c/@shader'><img src='https://fiddle.skia.org/c/@shader_raster.png'></a>
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</td>
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</tr>
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</table>
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@ -32,8 +32,8 @@ heptagram. This function can be cut and pasted into
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canvas->drawPath(path, p);
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}
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<a href="https://fiddle.skia.org/c/d7b4ccb6d6281b68a274a72b187fc450">
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<img src="https://fiddle.skia.org/i/d7b4ccb6d6281b68a274a72b187fc450_raster.png"></a>
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<a href='https://fiddle.skia.org/c/@skcanvas_star'><img
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src='https://fiddle.skia.org/c/@skcanvas_star_raster.png'></a>
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Details
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-------
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@ -59,8 +59,8 @@ SkPaint.
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canvas->restore();
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}
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<a href="https://fiddle.skia.org/c/6af99894b40ea1331f6a79d55a4cbfd7">
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<img src="https://fiddle.skia.org/i/6af99894b40ea1331f6a79d55a4cbfd7_raster.png"></a>
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<a href='https://fiddle.skia.org/c/@skcanvas_square'><img
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src='https://fiddle.skia.org/c/@skcanvas_square_raster.png'></a>
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The code above will draw a rectangle rotated by 45 degrees. Exactly
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what color and style the rect will be drawn in is described by the
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@ -132,15 +132,16 @@ parameter.
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canvas->drawBitmap(source, 128, 128, &paint);
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SkRect rect2 = SkRect::MakeXYWH(0, 0, 40, 60);
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canvas->drawBitmapRect(source, rect2);
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canvas->drawBitmapRect(source, rect2, &paint);
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SkPaint paint2;
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const char text[] = "Hello, Skia!";
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canvas->drawText(text, strlen(text), 50, 25, paint2);
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}
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<a href="https://fiddle.skia.org/c/35b614d41e60289461d658a9d509e28d">
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<img src="https://fiddle.skia.org/i/35b614d41e60289461d658a9d509e28d_raster.png"></a>
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<a href='https://fiddle.skia.org/c/@skcanvas_paint'><img
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src='https://fiddle.skia.org/c/@skcanvas_paint_raster.png'></a>
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In some of the calls, we pass a pointer, rather than a reference, to
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the paint. In those instances, the paint parameter may be null. In all
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@ -18,7 +18,7 @@ Unlike `SkCanvas`, paints do not maintain an internal stack of state
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(i.e. there is no save/restore on a paint). However, paints are
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relatively light-weight, so the client may create and maintain any
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number of paint objects, each set up for a particular use. Factoring
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all of these color and stylistic attribute out of the canvas state,
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all of these color and stylistic attributes out of the canvas state,
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and into (multiple) paint objects, allows canvas' save/restore to be
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that much more efficient, as all they have to do is maintain the stack
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of matrix and clip settings.
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@ -52,8 +52,8 @@ of matrix and clip settings.
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canvas->drawText(text, strlen(text), 20.0f, 224.0f, paint3);
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}
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<a href="https://fiddle.skia.org/c/c4cfc71ed9232dac9c0d6518311b386e">
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<img src="https://fiddle.skia.org/i/c4cfc71ed9232dac9c0d6518311b386e_raster.png"></a>
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<a href='https://fiddle.skia.org/c/@skpaint_skia'><img
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src='https://fiddle.skia.org/c/@skpaint_skia_raster.png'></a>
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This shows three different paints, each set up to draw in a different
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style. Now the caller can intermix these paints freely, either using
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@ -78,8 +78,8 @@ them as is, or modifying them as the drawing proceeds.
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paint3.setColor(SK_ColorBLUE);
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canvas->drawText("SKIA", 4, 20, 220, paint3);
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<a href="https://fiddle.skia.org/c/5203b17103f487dd33965b4211d80956">
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<img src="https://fiddle.skia.org/i/5203b17103f487dd33965b4211d80956_raster.png"></a>
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<a href='https://fiddle.skia.org/c/@skpaint_mix'><img
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src='https://fiddle.skia.org/c/@skpaint_mix_raster.png'></a>
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Beyond simple attributes such as color, strokes, and text values,
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paints support effects. These are subclasses of different aspects of
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@ -92,25 +92,24 @@ assign a SkShader to the paint.
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<!--?prettify lang=cc?-->
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SkPoint points[2] = {
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SkPoint::Make(0.0f, 0.0f),
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SkPoint::Make(256.0f, 256.0f)
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};
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SkColor colors[2] = {SK_ColorBLUE, SK_ColorYELLOW};
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SkShader* shader =
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SkGradientShader::CreateLinear(
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points, colors, nullptr, 2,
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SkShader::kClamp_TileMode, 0, nullptr);
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SkPaint paint;
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paint.setShader(shader);
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shader->unref();
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canvas->drawPaint(paint);
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void draw(SkCanvas* canvas) {
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SkPoint points[2] = {
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SkPoint::Make(0.0f, 0.0f),
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SkPoint::Make(256.0f, 256.0f)
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};
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SkColor colors[2] = {SK_ColorBLUE, SK_ColorYELLOW};
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SkPaint paint;
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paint.setShader(SkGradientShader::MakeLinear(
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points, colors, nullptr, 2,
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SkShader::kClamp_TileMode, 0, nullptr));
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canvas->drawPaint(paint);
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}
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<a href="https://fiddle.skia.org/c/f91b5310d57744a5a1475b7e47d4a172">
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<img src="https://fiddle.skia.org/i/f91b5310d57744a5a1475b7e47d4a172_raster.png"></a>
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<a href='https://fiddle.skia.org/c/@skpaint_shader'><img
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src='https://fiddle.skia.org/c/@skpaint_shader_raster.png'></a>
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Now, anything drawn with that paint will be drawn with the gradient
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specified in the call to `CreateLinear()`. The shader object that is
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specified in the call to `MakeLinear()`. The shader object that is
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returned is reference-counted. Whenever any effects object, like a
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shader, is assigned to a paint, its reference-count is increased by
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the paint. To balance this, the caller in the above example calls
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@ -156,87 +155,86 @@ with a vertical alpha gradient.
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<!--?prettify lang=cc?-->
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SkXfermode::Mode modes[] = {
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SkXfermode::kClear_Mode,
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SkXfermode::kSrc_Mode,
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SkXfermode::kDst_Mode,
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SkXfermode::kSrcOver_Mode,
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SkXfermode::kDstOver_Mode,
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SkXfermode::kSrcIn_Mode,
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SkXfermode::kDstIn_Mode,
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SkXfermode::kSrcOut_Mode,
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SkXfermode::kDstOut_Mode,
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SkXfermode::kSrcATop_Mode,
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SkXfermode::kDstATop_Mode,
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SkXfermode::kXor_Mode,
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SkXfermode::kPlus_Mode,
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SkXfermode::kModulate_Mode,
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SkXfermode::kScreen_Mode,
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SkXfermode::kOverlay_Mode,
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SkXfermode::kDarken_Mode,
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SkXfermode::kLighten_Mode,
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SkXfermode::kColorDodge_Mode,
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SkXfermode::kColorBurn_Mode,
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SkXfermode::kHardLight_Mode,
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SkXfermode::kSoftLight_Mode,
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SkXfermode::kDifference_Mode,
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SkXfermode::kExclusion_Mode,
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SkXfermode::kMultiply_Mode,
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SkXfermode::kHue_Mode,
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SkXfermode::kSaturation_Mode,
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SkXfermode::kColor_Mode,
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SkXfermode::kLuminosity_Mode,
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};
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SkRect rect = SkRect::MakeWH(64.0f, 64.0f);
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SkPaint text, stroke, src, dst;
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stroke.setStyle(SkPaint::kStroke_Style);
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text.setTextSize(24.0f);
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text.setAntiAlias(true);
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SkPoint srcPoints[2] = {
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SkPoint::Make(0.0f, 0.0f),
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SkPoint::Make(64.0f, 0.0f)
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};
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SkColor srcColors[2] = {
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SK_ColorMAGENTA & 0x00FFFFFF,
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SK_ColorMAGENTA};
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SkAutoTUnref<SkShader> srcShader(
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SkGradientShader::CreateLinear(
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srcPoints, srcColors, nullptr, 2,
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SkShader::kClamp_TileMode, 0, nullptr));
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src.setShader(srcShader);
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void draw(SkCanvas* canvas) {
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SkXfermode::Mode modes[] = {
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SkXfermode::kClear_Mode,
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SkXfermode::kSrc_Mode,
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SkXfermode::kDst_Mode,
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SkXfermode::kSrcOver_Mode,
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SkXfermode::kDstOver_Mode,
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SkXfermode::kSrcIn_Mode,
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SkXfermode::kDstIn_Mode,
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SkXfermode::kSrcOut_Mode,
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SkXfermode::kDstOut_Mode,
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SkXfermode::kSrcATop_Mode,
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SkXfermode::kDstATop_Mode,
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SkXfermode::kXor_Mode,
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SkXfermode::kPlus_Mode,
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SkXfermode::kModulate_Mode,
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SkXfermode::kScreen_Mode,
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SkXfermode::kOverlay_Mode,
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SkXfermode::kDarken_Mode,
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SkXfermode::kLighten_Mode,
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SkXfermode::kColorDodge_Mode,
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SkXfermode::kColorBurn_Mode,
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SkXfermode::kHardLight_Mode,
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SkXfermode::kSoftLight_Mode,
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SkXfermode::kDifference_Mode,
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SkXfermode::kExclusion_Mode,
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SkXfermode::kMultiply_Mode,
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SkXfermode::kHue_Mode,
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SkXfermode::kSaturation_Mode,
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SkXfermode::kColor_Mode,
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SkXfermode::kLuminosity_Mode,
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};
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SkRect rect = SkRect::MakeWH(64.0f, 64.0f);
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SkPaint text, stroke, src, dst;
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stroke.setStyle(SkPaint::kStroke_Style);
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text.setTextSize(24.0f);
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text.setAntiAlias(true);
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SkPoint srcPoints[2] = {
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SkPoint::Make(0.0f, 0.0f),
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SkPoint::Make(64.0f, 0.0f)
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};
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SkColor srcColors[2] = {
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SK_ColorMAGENTA & 0x00FFFFFF,
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SK_ColorMAGENTA};
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src.setShader(SkGradientShader::MakeLinear(
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srcPoints, srcColors, nullptr, 2,
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SkShader::kClamp_TileMode, 0, nullptr));
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SkPoint dstPoints[2] = {
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SkPoint::Make(0.0f, 0.0f),
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SkPoint::Make(0.0f, 64.0f)
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};
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SkColor dstColors[2] = {
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SK_ColorCYAN & 0x00FFFFFF,
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SK_ColorCYAN};
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SkAutoTUnref<SkShader> dstShader(
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SkGradientShader::CreateLinear(
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dstPoints, dstColors, nullptr, 2,
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SkShader::kClamp_TileMode, 0, nullptr));
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dst.setShader(dstShader);
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canvas->clear(SK_ColorWHITE);
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size_t N = sizeof(modes) / sizeof(modes[0]);
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size_t K = (N - 1) / 3 + 1;
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SkASSERT(K * 64 == 640); // tall enough
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for (size_t i = 0; i < N; ++i) {
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SkAutoCanvasRestore autoCanvasRestore(canvas, true);
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canvas->translate(192.0f * (i / K), 64.0f * (i % K));
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const char* desc = SkXfermode::ModeName(modes[i]);
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canvas->drawText(desc, strlen(desc), 68.0f, 30.0f, text);
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canvas->clipRect(SkRect::MakeWH(64.0f, 64.0f));
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canvas->drawColor(SK_ColorLTGRAY);
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(void)canvas->saveLayer(nullptr, nullptr);
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canvas->clear(SK_ColorTRANSPARENT);
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canvas->drawPaint(dst);
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src.setXfermodeMode(modes[i]);
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canvas->drawPaint(src);
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canvas->drawRect(rect, stroke);
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SkPoint dstPoints[2] = {
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SkPoint::Make(0.0f, 0.0f),
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SkPoint::Make(0.0f, 64.0f)
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};
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SkColor dstColors[2] = {
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SK_ColorCYAN & 0x00FFFFFF,
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SK_ColorCYAN};
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dst.setShader(SkGradientShader::MakeLinear(
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dstPoints, dstColors, nullptr, 2,
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SkShader::kClamp_TileMode, 0, nullptr));
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canvas->clear(SK_ColorWHITE);
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size_t N = sizeof(modes) / sizeof(modes[0]);
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size_t K = (N - 1) / 3 + 1;
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SkASSERT(K * 64 == 640); // tall enough
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for (size_t i = 0; i < N; ++i) {
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SkAutoCanvasRestore autoCanvasRestore(canvas, true);
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canvas->translate(192.0f * (i / K), 64.0f * (i % K));
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const char* desc = SkXfermode::ModeName(modes[i]);
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canvas->drawText(desc, strlen(desc), 68.0f, 30.0f, text);
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canvas->clipRect(SkRect::MakeWH(64.0f, 64.0f));
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canvas->drawColor(SK_ColorLTGRAY);
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(void)canvas->saveLayer(nullptr, nullptr);
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canvas->clear(SK_ColorTRANSPARENT);
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canvas->drawPaint(dst);
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src.setXfermodeMode(modes[i]);
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canvas->drawPaint(src);
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canvas->drawRect(rect, stroke);
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}
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}
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<a href="https://fiddle.skia.org/c/0a2392be5adf339ce6537799f2807f3c"><img src="https://fiddle.skia.org/i/0a2392be5adf339ce6537799f2807f3c_raster.png" alt=""></a>
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<a href='https://fiddle.skia.org/c/@skpaint_xfer'><img
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src='https://fiddle.skia.org/c/@skpaint_xfer_raster.png'></a>
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<span id="ShShader"></span>
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@ -253,54 +251,44 @@ Several shaders are defined (besides the linear gradient already mentioned):
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SkMatrix matrix;
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matrix.setScale(0.75f, 0.75f);
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matrix.preRotate(30.0f);
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SkShader* shader =
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SkShader::CreateBitmapShader(
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source,
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SkShader::kRepeat_TileMode ,
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SkShader::kRepeat_TileMode ,
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&matrix);
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SkPaint paint;
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paint.setShader(shader);
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shader->unref();
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paint.setShader(SkShader::MakeBitmapShader(source,
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SkShader::kRepeat_TileMode,
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SkShader::kRepeat_TileMode,
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&matrix));
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canvas->drawPaint(paint);
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|
||||
<a href="https://fiddle.skia.org/c/0e8d08e0a0b342e9e45c364d0e5cea8a">
|
||||
<img src="https://fiddle.skia.org/i/0e8d08e0a0b342e9e45c364d0e5cea8a_raster.png"></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_bitmap_shader'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_bitmap_shader_raster.png'></a>
|
||||
|
||||
* Radial Gradient Shader
|
||||
|
||||
<!--?prettify lang=cc?-->
|
||||
|
||||
SkColor colors[2] = {SK_ColorBLUE, SK_ColorYELLOW};
|
||||
SkShader* shader =
|
||||
SkGradientShader::CreateRadial(
|
||||
SkPoint::Make(128.0f, 128.0f), 180.0f,
|
||||
colors, nullptr, 2, SkShader::kClamp_TileMode, 0, nullptr);
|
||||
SkPaint paint;
|
||||
paint.setShader(shader);
|
||||
shader->unref();
|
||||
paint.setShader(SkGradientShader::MakeRadial(
|
||||
SkPoint::Make(128.0f, 128.0f), 180.0f,
|
||||
colors, nullptr, 2, SkShader::kClamp_TileMode, 0, nullptr));
|
||||
canvas->drawPaint(paint);
|
||||
|
||||
<a href="https://fiddle.skia.org/c/601abd2819e38365900bf62286986024">
|
||||
<img src="https://fiddle.skia.org/i/601abd2819e38365900bf62286986024_raster.png"></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_radial'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_radial_raster.png'></a>
|
||||
|
||||
* Two-Point Conical Gradient Shader
|
||||
|
||||
<!--?prettify lang=cc?-->
|
||||
|
||||
SkColor colors[2] = {SK_ColorBLUE, SK_ColorYELLOW};
|
||||
SkShader* shader =
|
||||
SkGradientShader::CreateTwoPointConical(
|
||||
SkPoint::Make(128.0f, 128.0f), 128.0f,
|
||||
SkPoint::Make(128.0f, 16.0f), 16.0f,
|
||||
colors, nullptr, 2, SkShader::kClamp_TileMode, 0, nullptr);
|
||||
SkPaint paint;
|
||||
paint.setShader(shader);
|
||||
shader->unref();
|
||||
paint.setShader(SkGradientShader::MakeTwoPointConical(
|
||||
SkPoint::Make(128.0f, 128.0f), 128.0f,
|
||||
SkPoint::Make(128.0f, 16.0f), 16.0f,
|
||||
colors, nullptr, 2, SkShader::kClamp_TileMode, 0, nullptr));
|
||||
canvas->drawPaint(paint);
|
||||
|
||||
<a href="https://fiddle.skia.org/c/991f7d67ff1ccebd6c2c4fab18a76edc">
|
||||
<img src="https://fiddle.skia.org/i/991f7d67ff1ccebd6c2c4fab18a76edc_raster.png"></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_2pt'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_2pt_raster.png'></a>
|
||||
|
||||
|
||||
* Sweep Gradient Shader
|
||||
@ -309,69 +297,58 @@ Several shaders are defined (besides the linear gradient already mentioned):
|
||||
|
||||
SkColor colors[4] = {
|
||||
SK_ColorCYAN, SK_ColorMAGENTA, SK_ColorYELLOW, SK_ColorCYAN};
|
||||
SkShader* shader =
|
||||
SkGradientShader::CreateSweep(
|
||||
128.0f, 128.0f, colors, nullptr, 4, 0, nullptr);
|
||||
SkPaint paint;
|
||||
paint.setShader(shader);
|
||||
shader->unref();
|
||||
paint.setShader(SkGradientShader::MakeSweep(
|
||||
128.0f, 128.0f, colors, nullptr, 4, 0, nullptr));
|
||||
canvas->drawPaint(paint);
|
||||
|
||||
<a href="https://fiddle.skia.org/c/cee9d1831f6679c3d88170f857995d12">
|
||||
<img src="https://fiddle.skia.org/i/cee9d1831f6679c3d88170f857995d12_raster.png"></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_sweep'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_sweep_raster.png'></a>
|
||||
|
||||
* Fractal Perlin Noise Shader
|
||||
|
||||
<!--?prettify lang=cc?-->
|
||||
|
||||
canvas->clear(SK_ColorWHITE);
|
||||
SkShader* shader = SkPerlinNoiseShader::CreateFractalNoise(
|
||||
0.05f, 0.05f, 4, 0.0f, nullptr);
|
||||
SkPaint paint;
|
||||
paint.setShader(shader);
|
||||
shader->unref();
|
||||
paint.setShader(SkPerlinNoiseShader::MakeFractalNoise(
|
||||
0.05f, 0.05f, 4, 0.0f, nullptr));
|
||||
canvas->drawPaint(paint);
|
||||
|
||||
<a href="https://fiddle.skia.org/c/cc45c5349c3b31f97da7c1af7f84162a">
|
||||
<img src="https://fiddle.skia.org/i/cc45c5349c3b31f97da7c1af7f84162a_raster.png"></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_perlin'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_perlin_raster.png'></a>
|
||||
|
||||
* Turbulence Perlin Noise Shader
|
||||
|
||||
<!--?prettify lang=cc?-->
|
||||
|
||||
canvas->clear(SK_ColorWHITE);
|
||||
SkShader* shader = SkPerlinNoiseShader::CreateTurbulence(
|
||||
0.05f, 0.05f, 4, 0.0f, nullptr);
|
||||
SkPaint paint;
|
||||
paint.setShader(shader);
|
||||
shader->unref();
|
||||
paint.setShader(SkPerlinNoiseShader::MakeTurbulence(
|
||||
0.05f, 0.05f, 4, 0.0f, nullptr));
|
||||
canvas->drawPaint(paint);
|
||||
|
||||
<a href="https://fiddle.skia.org/c/52729ed3a71b89a6dba4f60e8eb67727">
|
||||
<img src="https://fiddle.skia.org/i/52729ed3a71b89a6dba4f60e8eb67727_raster.png"></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_turb'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_turb_raster.png'></a>
|
||||
|
||||
* Compose Shader
|
||||
|
||||
<!--?prettify lang=cc?-->
|
||||
|
||||
SkColor colors[2] = {SK_ColorBLUE, SK_ColorYELLOW};
|
||||
SkShader* shader1 =
|
||||
SkGradientShader::CreateRadial(
|
||||
SkPoint::Make(128.0f, 128.0f), 180.0f,
|
||||
colors, nullptr, 2, SkShader::kClamp_TileMode, 0, nullptr);
|
||||
SkShader* shader2 = SkPerlinNoiseShader::CreateTurbulence(
|
||||
0.025f, 0.025f, 2, 0.0f, nullptr);
|
||||
SkShader* shader =
|
||||
new SkComposeShader(shader1, shader2);
|
||||
SkPaint paint;
|
||||
paint.setShader(shader);
|
||||
shader->unref();
|
||||
shader2->unref();
|
||||
shader1->unref();
|
||||
paint.setShader(
|
||||
SkShader::MakeComposeShader(
|
||||
SkGradientShader::MakeRadial(
|
||||
SkPoint::Make(128.0f, 128.0f), 180.0f,
|
||||
colors, nullptr, 2, SkShader::kClamp_TileMode, 0, nullptr),
|
||||
SkPerlinNoiseShader::MakeTurbulence(0.025f, 0.025f, 2, 0.0f, nullptr),
|
||||
SkXfermode::kDifference_Mode)
|
||||
);
|
||||
canvas->drawPaint(paint);
|
||||
|
||||
<a href="https://fiddle.skia.org/c/1209b7a29d870302edcc43dc0916e8d5">
|
||||
<img src="https://fiddle.skia.org/i/1209b7a29d870302edcc43dc0916e8d5_raster.png"></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_compose_shader'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_compose_shader_raster.png'></a>
|
||||
|
||||
|
||||
<span id="SkMaskFilter"></span>
|
||||
@ -383,20 +360,18 @@ SkMaskFilter
|
||||
|
||||
<!--?prettify lang=cc?-->
|
||||
|
||||
canvas->drawText(text, strlen(text), 0, 160, paint);
|
||||
canvas->drawColor(SK_ColorWHITE);
|
||||
SkPaint paint;
|
||||
paint.setAntiAlias(true);
|
||||
paint.setTextSize(120);
|
||||
SkMaskFilter* filter =
|
||||
SkBlurMaskFilter::Create(
|
||||
kNormal_SkBlurStyle, 5.0f, 0);
|
||||
paint.setMaskFilter(filter);
|
||||
filter->unref();
|
||||
paint.setMaskFilter(SkBlurMaskFilter::Make(
|
||||
kNormal_SkBlurStyle, 5.0f, 0));
|
||||
const char text[] = "Skia";
|
||||
canvas->drawText(text, strlen(text), 0, 160, paint);
|
||||
|
||||
<a href="https://fiddle.skia.org/c/0e004664122851691d67a291007b64d7">
|
||||
<img src="https://fiddle.skia.org/i/0e004664122851691d67a291007b64d7_raster.png"></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_blur_mask_filter'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_blur_mask_filter_raster.png'></a>
|
||||
|
||||
* Emboss Mask Filter
|
||||
|
||||
@ -407,16 +382,13 @@ SkMaskFilter
|
||||
paint.setAntiAlias(true);
|
||||
paint.setTextSize(120);
|
||||
SkScalar direction[3] = {1.0f, 1.0f, 1.0f};
|
||||
SkMaskFilter* filter =
|
||||
SkBlurMaskFilter::CreateEmboss(
|
||||
2.0f, direction, 0.3f, 0.1f);
|
||||
paint.setMaskFilter(filter);
|
||||
filter->unref();
|
||||
paint.setMaskFilter(SkBlurMaskFilter::MakeEmboss(
|
||||
2.0f, direction, 0.3f, 0.1f));
|
||||
const char text[] = "Skia";
|
||||
canvas->drawText(text, strlen(text), 0, 160, paint);
|
||||
|
||||
<a href="https://fiddle.skia.org/c/1ef71be7fb749a2d81a55721b2d2c77d">
|
||||
<img src="https://fiddle.skia.org/i/1ef71be7fb749a2d81a55721b2d2c77d_raster.png"></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_emboss'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_emboss_raster.png'></a>
|
||||
|
||||
|
||||
<span id="SkColorFilter"></span>
|
||||
@ -429,12 +401,11 @@ SkColorFilter
|
||||
<!--?prettify lang=cc?-->
|
||||
|
||||
void f(SkCanvas* c, SkScalar x, SkScalar y, SkScalar colorMatrix[20]) {
|
||||
SkColorFilter* cf = SkColorMatrixFilter::Create(colorMatrix);
|
||||
SkPaint paint;
|
||||
paint.setColorFilter(cf);
|
||||
cf->unref();
|
||||
paint.setColorFilter(SkColorFilter::MakeMatrixFilterRowMajor255(colorMatrix));
|
||||
c->drawBitmap(source, x, y, &paint);
|
||||
}
|
||||
|
||||
void draw(SkCanvas* c) {
|
||||
c->scale(0.25, 0.25);
|
||||
SkScalar colorMatrix1[20] = {
|
||||
@ -494,27 +465,27 @@ SkColorFilter
|
||||
f(c, 1536, 512, inverter);
|
||||
}
|
||||
|
||||
<a href="https://fiddle.skia.org/c/91fb5341ee7903c9682df20bb3d73dbb">
|
||||
<img src="https://fiddle.skia.org/i/91fb5341ee7903c9682df20bb3d73dbb_raster.png"></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_matrix_color_filter'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_matrix_color_filter_raster.png'></a>
|
||||
|
||||
* Color Table Color Filter
|
||||
|
||||
<!--?prettify lang=cc?-->
|
||||
|
||||
canvas->scale(0.5, 0.5);
|
||||
uint8_t ct[256];
|
||||
for (int i = 0; i < 256; ++i) {
|
||||
int x = (i - 96) * 255 / 64;
|
||||
ct[i] = x < 0 ? 0 : x > 255 ? 255 : x;
|
||||
void draw(SkCanvas* canvas) {
|
||||
canvas->scale(0.5, 0.5);
|
||||
uint8_t ct[256];
|
||||
for (int i = 0; i < 256; ++i) {
|
||||
int x = (i - 96) * 255 / 64;
|
||||
ct[i] = x < 0 ? 0 : x > 255 ? 255 : x;
|
||||
}
|
||||
SkPaint paint;
|
||||
paint.setColorFilter(SkTableColorFilter::MakeARGB(nullptr, ct, ct, ct));
|
||||
canvas->drawBitmap(source, 0, 0, &paint);
|
||||
}
|
||||
SkColorFilter* cf = SkTableColorFilter::CreateARGB(nullptr, ct, ct, ct);
|
||||
SkPaint paint;
|
||||
paint.setColorFilter(cf);
|
||||
cf->unref();
|
||||
canvas->drawBitmap(source, 0, 0, &paint);
|
||||
|
||||
<a href="https://fiddle.skia.org/c/0d3d339543afa1b10c60f9826f264c3f">
|
||||
<img src="https://fiddle.skia.org/i/0d3d339543afa1b10c60f9826f264c3f_raster.png"></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_color_table_filter'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_color_table_filter_raster.png'></a>
|
||||
|
||||
|
||||
<span id="SkPathEffect"></span>
|
||||
@ -528,8 +499,8 @@ SkPathEffect
|
||||
<!--?prettify lang=cc?-->
|
||||
|
||||
void draw(SkCanvas* canvas) {
|
||||
SkScalar scale = 10.0f;
|
||||
SkPath path;
|
||||
SkScalar scale = 10.0f;
|
||||
SkPath path;
|
||||
static const int8_t pts[] = { 2, 2, 1, 3, 0, 3, 2, 1, 3, 1,
|
||||
4, 0, 4, 1, 5, 1, 4, 2, 4, 3, 2, 5, 2, 4, 3, 3, 2, 3 };
|
||||
path.moveTo(2 * scale, 3 * scale);
|
||||
@ -538,10 +509,8 @@ SkPathEffect
|
||||
}
|
||||
path.close();
|
||||
SkMatrix matrix = SkMatrix::MakeScale(4 * scale);
|
||||
SkAutoTUnref<SkPathEffect> pathEffect(
|
||||
SkPath2DPathEffect::Create(matrix, path));
|
||||
SkPaint paint;
|
||||
paint.setPathEffect(pathEffect);
|
||||
paint.setPathEffect(SkPath2DPathEffect::Make(matrix, path));
|
||||
paint.setAntiAlias(true);
|
||||
canvas->clear(SK_ColorWHITE);
|
||||
SkRect bounds;
|
||||
@ -550,7 +519,8 @@ SkPathEffect
|
||||
canvas->drawRect(bounds, paint);
|
||||
}
|
||||
|
||||
<a href="https://fiddle.skia.org/c/aae271e4f0178455f0e128981d714d73"><img src="https://fiddle.skia.org/i/aae271e4f0178455f0e128981d714d73_raster.png" alt=""></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_path_2d_path_effect'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_path_2d_path_effect_raster.png'></a>
|
||||
|
||||
* SkLine2DPathEffect: a special case of SkPath2DPathEffect where the
|
||||
path is a straight line to be stroked, not a path to be filled.
|
||||
@ -562,9 +532,7 @@ SkPathEffect
|
||||
SkMatrix lattice;
|
||||
lattice.setScale(8.0f, 8.0f);
|
||||
lattice.preRotate(30.0f);
|
||||
SkAutoTUnref<SkPathEffect> pe(
|
||||
SkLine2DPathEffect::Create(0.0f, lattice));
|
||||
paint.setPathEffect(pe);
|
||||
paint.setPathEffect(SkLine2DPathEffect::Make(0.0f, lattice));
|
||||
paint.setAntiAlias(true);
|
||||
SkRect bounds;
|
||||
(void)canvas->getClipBounds(&bounds);
|
||||
@ -573,7 +541,8 @@ SkPathEffect
|
||||
canvas->drawRect(bounds, paint);
|
||||
}
|
||||
|
||||
<a href="https://fiddle.skia.org/c/3f49502145886920f95d43912e0f550d"><img src="https://fiddle.skia.org/i/3f49502145886920f95d43912e0f550d_raster.png" alt=""></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_line_2d_path_effect'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_line_2d_path_effect_raster.png'></a>
|
||||
|
||||
* SkPath1DPathEffect: create dash-like effects by replicating the specified path along the drawn path.
|
||||
|
||||
@ -583,16 +552,15 @@ SkPathEffect
|
||||
SkPaint paint;
|
||||
SkPath path;
|
||||
path.addOval(SkRect::MakeWH(16.0f, 6.0f));
|
||||
SkAutoTUnref<SkPathEffect> pe(
|
||||
SkPath1DPathEffect::Create(
|
||||
paint.setPathEffect(SkPath1DPathEffect::Make(
|
||||
path, 32.0f, 0.0f, SkPath1DPathEffect::kRotate_Style));
|
||||
paint.setPathEffect(pe);
|
||||
paint.setAntiAlias(true);
|
||||
canvas->clear(SK_ColorWHITE);
|
||||
canvas->drawCircle(128.0f, 128.0f, 122.0f, paint);
|
||||
}
|
||||
|
||||
<a href="https://fiddle.skia.org/c/756a8cdb9458c05f6c1c7c398d979dac"><img src="https://fiddle.skia.org/i/756a8cdb9458c05f6c1c7c398d979dac_raster.png" alt=""></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_path_1d_path_effect'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_path_1d_path_effect_raster.png'></a>
|
||||
|
||||
* SkArcToPathEffect
|
||||
|
||||
@ -604,21 +572,15 @@ SkPathEffect
|
||||
const SkScalar R = 115.2f, C = 128.0f;
|
||||
SkPath path;
|
||||
path.moveTo(C + R, C);
|
||||
for (int i = 1; i < 7; ++i) {
|
||||
for (int i = 1; i < 8; ++i) {
|
||||
SkScalar a = 2.6927937f * i;
|
||||
path.lineTo(C + R * cos(a), C + R * sin(a));
|
||||
}
|
||||
path.close();
|
||||
return path;
|
||||
}
|
||||
|
||||
<!--?prettify lang=cc?-->
|
||||
|
||||
void draw(SkCanvas* canvas) {
|
||||
SkPaint paint;
|
||||
SkAutoTUnref<SkPathEffect> pe(
|
||||
SkArcToPathEffect::Create(8.0f));
|
||||
paint.setPathEffect(pe);
|
||||
paint.setPathEffect(SkArcToPathEffect::Make(8.0f));
|
||||
paint.setStyle(SkPaint::kStroke_Style);
|
||||
paint.setAntiAlias(true);
|
||||
canvas->clear(SK_ColorWHITE);
|
||||
@ -626,7 +588,9 @@ SkPathEffect
|
||||
canvas->drawPath(path, paint);
|
||||
}
|
||||
|
||||
<a href="https://fiddle.skia.org/c/1cc2a1363dd0e96954e084f7ca29aa5f"><img src="https://fiddle.skia.org/i/1cc2a1363dd0e96954e084f7ca29aa5f_raster.png" alt=""></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_arc_to_path_effect'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_arc_to_path_effect_raster.png'></a>
|
||||
|
||||
|
||||
* SkCornerPathEffect: a path effect that can turn sharp corners into
|
||||
various treatments (e.g. rounded corners).
|
||||
@ -635,9 +599,7 @@ SkPathEffect
|
||||
|
||||
void draw(SkCanvas* canvas) {
|
||||
SkPaint paint;
|
||||
SkAutoTUnref<SkPathEffect> pe(
|
||||
SkCornerPathEffect::Create(32.0f));
|
||||
paint.setPathEffect(pe);
|
||||
paint.setPathEffect(SkCornerPathEffect::Make(32.0f));
|
||||
paint.setStyle(SkPaint::kStroke_Style);
|
||||
paint.setAntiAlias(true);
|
||||
canvas->clear(SK_ColorWHITE);
|
||||
@ -646,7 +608,7 @@ SkPathEffect
|
||||
canvas->drawPath(path, paint);
|
||||
}
|
||||
|
||||
<a href="https://fiddle.skia.org/c/f5361bbb33ad43c656dd40bb03ee2114"><img src="https://fiddle.skia.org/i/f5361bbb33ad43c656dd40bb03ee2114_raster.png" alt=""></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_corner_path_effects'><img src='https://fiddle.skia.org/c/@skpaint_corner_path_effects_raster.png'></a>
|
||||
|
||||
* SkDashPathEffect: a path effect that implements dashing.
|
||||
|
||||
@ -655,10 +617,8 @@ SkPathEffect
|
||||
void draw(SkCanvas* canvas) {
|
||||
const SkScalar intervals[] = { 10.0f, 5.0f, 2.0f, 5.0f };
|
||||
size_t count = sizeof(intervals) / sizeof(intervals[0]);
|
||||
SkAutoTUnref<SkPathEffect> pe(
|
||||
SkDashPathEffect::Create(intervals, count, 0.0f));
|
||||
SkPaint paint;
|
||||
paint.setPathEffect(pe);
|
||||
paint.setPathEffect(SkDashPathEffect::Make(intervals, count, 0.0f));
|
||||
paint.setStyle(SkPaint::kStroke_Style);
|
||||
paint.setStrokeWidth(2.0f);
|
||||
paint.setAntiAlias(true);
|
||||
@ -667,7 +627,7 @@ SkPathEffect
|
||||
canvas->drawPath(path, paint);
|
||||
}
|
||||
|
||||
<a href="https://fiddle.skia.org/c/d221ced999a80ac23870d0301ffeedad"><img src="https://fiddle.skia.org/i/d221ced999a80ac23870d0301ffeedad_raster.png" alt=""></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_dash_path_effect'><img src='https://fiddle.skia.org/c/@skpaint_dash_path_effect_raster.png'></a>
|
||||
|
||||
* SkDiscretePathEffect: This path effect chops a path into discrete
|
||||
segments, and randomly displaces them.
|
||||
@ -675,10 +635,8 @@ SkPathEffect
|
||||
<!--?prettify lang=cc?-->
|
||||
|
||||
void draw(SkCanvas* canvas) {
|
||||
SkAutoTUnref<SkPathEffect> pe(
|
||||
SkDiscretePathEffect::Create(10.0f, 4.0f));
|
||||
SkPaint paint;
|
||||
paint.setPathEffect(pe);
|
||||
paint.setPathEffect(SkDiscretePathEffect::Make(10.0f, 4.0f));
|
||||
paint.setStyle(SkPaint::kStroke_Style);
|
||||
paint.setStrokeWidth(2.0f);
|
||||
paint.setAntiAlias(true);
|
||||
@ -687,7 +645,8 @@ SkPathEffect
|
||||
canvas->drawPath(path, paint);
|
||||
}
|
||||
|
||||
<a href="https://fiddle.skia.org/c/af2f177438b376ca45cfffc29cc0177a"><img src="https://fiddle.skia.org/i/af2f177438b376ca45cfffc29cc0177a_raster.png" alt=""></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_discrete_path_effect'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_discrete_path_effect_raster.png'></a>
|
||||
|
||||
* SkComposePathEffect: a pathEffect whose effect is to apply
|
||||
first the inner pathEffect and the the outer pathEffect (i.e.
|
||||
@ -696,16 +655,13 @@ SkPathEffect
|
||||
<!--?prettify lang=cc?-->
|
||||
|
||||
void draw(SkCanvas* canvas) {
|
||||
SkAutoTUnref<SkPathEffect> pe0(
|
||||
SkDiscretePathEffect::Create(10.0f, 4.0f));
|
||||
const SkScalar intervals[] = { 10.0f, 5.0f, 2.0f, 5.0f };
|
||||
size_t count = sizeof(intervals) / sizeof(intervals[0]);
|
||||
SkAutoTUnref<SkPathEffect> pe1(
|
||||
SkDashPathEffect::Create(intervals, count, 0.0f));
|
||||
SkAutoTUnref<SkPathEffect> pe(
|
||||
SkComposePathEffect::Create(pe1, pe0));
|
||||
SkPaint paint;
|
||||
paint.setPathEffect(pe);
|
||||
paint.setPathEffect(SkComposePathEffect::Make(
|
||||
SkDashPathEffect::Make(intervals, count, 0.0f),
|
||||
SkDiscretePathEffect::Make(10.0f, 4.0f)
|
||||
));
|
||||
paint.setStyle(SkPaint::kStroke_Style);
|
||||
paint.setStrokeWidth(2.0f);
|
||||
paint.setAntiAlias(true);
|
||||
@ -714,7 +670,8 @@ SkPathEffect
|
||||
canvas->drawPath(path, paint);
|
||||
}
|
||||
|
||||
<a href="https://fiddle.skia.org/c/39a644161da79e8b5e49c193adac7173"><img src="https://fiddle.skia.org/i/39a644161da79e8b5e49c193adac7173_raster.png" alt=""></a>
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_compose_path_effect'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_compose_path_effect_raster.png'></a>
|
||||
|
||||
* SkSumPathEffect: a pathEffect whose effect is to apply two effects,
|
||||
in sequence (i.e. first(path) + second(path)).
|
||||
@ -722,14 +679,11 @@ SkPathEffect
|
||||
<!--?prettify lang=cc?-->
|
||||
|
||||
void draw(SkCanvas* canvas) {
|
||||
SkAutoTUnref<SkPathEffect> pe0(
|
||||
SkDiscretePathEffect::Create(10.0f, 4.0f));
|
||||
SkAutoTUnref<SkPathEffect> pe1(
|
||||
SkDiscretePathEffect::Create(10.0f, 4.0f, 1245u));
|
||||
SkAutoTUnref<SkPathEffect> pe(
|
||||
SkSumPathEffect::Create(pe1, pe0));
|
||||
SkPaint paint;
|
||||
paint.setPathEffect(pe);
|
||||
paint.setPathEffect(SkSumPathEffect::Make(
|
||||
SkDiscretePathEffect::Make(10.0f, 4.0f),
|
||||
SkDiscretePathEffect::Make(10.0f, 4.0f, 1245u)
|
||||
));
|
||||
paint.setStyle(SkPaint::kStroke_Style);
|
||||
paint.setStrokeWidth(2.0f);
|
||||
paint.setAntiAlias(true);
|
||||
@ -738,9 +692,6 @@ SkPathEffect
|
||||
canvas->drawPath(path, paint);
|
||||
}
|
||||
|
||||
<a href="https://fiddle.skia.org/c/e5f7861072893bd08c305a076bf32958"><img src="https://fiddle.skia.org/i/e5f7861072893bd08c305a076bf32958_raster.png" alt=""></a>
|
||||
|
||||
<!--
|
||||
<a href="https://fiddle.skia.org/c/"><img src="https://fiddle.skia.org/i/_raster.png" alt=""></a>
|
||||
-->
|
||||
<a href='https://fiddle.skia.org/c/@skpaint_sum_path_effect'><img
|
||||
src='https://fiddle.skia.org/c/@skpaint_sum_path_effect_raster.png'></a>
|
||||
|
||||
|
||||
@ -87,7 +87,8 @@ drawBitmapNine():
|
||||
bitmap.extractSubset(&subset, rect);
|
||||
canvas->drawBitmapNine(subset, ...);
|
||||
|
||||
[An example](https://fiddle.skia.org/c/c91694020f0810994917b56c323e4559)
|
||||
[An example](https://fiddle.skia.org/c/@subset_example)
|
||||
|
||||
|
||||
* * *
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user