83c2f70b51
Motivation: it would be a good idea if the API documentation examples
were checked into the skia repository, so we could make sure they
compile as part of the commit queue.
Fiddle would make/update a named fiddle each time it gets a new
commit of Skia, extracted from the code in the examples/ directory.
The docs would point at those named fiddles. Named fiddles have urls
in the form:
https://fiddle.skia.org/c/@Bitmap_000
Then we would stick a link to the example into the header documentation
like this:
/** Allocates the pixel memory for the bitmap, given its dimensions
and SkColorType. Returns true on success, where success means
either setPixels() or setPixelRef() was called.
@param bitmap SkBitmap containing SkImageInfo as input, and
SkPixelRef as output
@return true if SkPixelRef was allocated
@example https://fiddle.skia.org/c/@Bitmap_000
*/
bool allocPixelRef(SkBitmap* bitmap) override;
There are still around 200 disabled examples that need to be fixed
(these result from API changes since the author left).
Change-Id: I14a31348a9ccaaa31f65424b91e3a3533d2583a7
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/198824
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
Reviewed-by: Joe Gregorio <jcgregorio@google.com>
43 lines
2.0 KiB
C++
43 lines
2.0 KiB
C++
#if 0 // Disabled until updated to use current API.
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// Copyright 2019 Google LLC.
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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#include "fiddle/examples.h"
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// HASH=fe3c5a755d3dde29bba058a583f18901
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REG_FIDDLE(ImageInfo_039, 256, 224, false, 0) {
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void draw(SkCanvas* canvas) {
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const int width = 256;
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const int height = 64;
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auto drawLabel = [=](const char* what, bool closeToSRGB) -> void {
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SkString string;
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string.printf("%s gamma is %s" "close to sRGB", what, closeToSRGB ? "" : "not ");
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SkPaint paint;
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paint.setAntiAlias(true);
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canvas->drawString(string, 20, 56, paint);
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};
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SkColor gradColors[] = { 0xFFFF7F00, 0xFF00FF7F, 0xFF0000FF, 0xFF7F7FFF };
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SkPoint gradPoints[] = { { 0, 0 }, { width, 0 }, { width * 2, 0 }, { width * 3, 0 } };
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SkPaint gradPaint;
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gradPaint.setShader(SkGradientShader::MakeLinear(gradPoints, gradColors, nullptr,
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SK_ARRAY_COUNT(gradColors), SkShader::kClamp_TileMode));
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canvas->drawRect(SkRect::MakeWH(width, height), gradPaint);
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drawLabel("canvas", canvas->imageInfo().gammaCloseToSRGB());
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SkBitmap bitmap;
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SkImageInfo offscreenInfo = SkImageInfo::MakeS32(width, height, kPremul_SkAlphaType);
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bitmap.allocPixels(offscreenInfo);
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SkCanvas sRGBOffscreen(bitmap);
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sRGBOffscreen.drawRect(SkRect::MakeWH(width, height), gradPaint);
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canvas->translate(0, 80);
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canvas->drawBitmap(bitmap, 0, 0);
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drawLabel("offscreen", offscreenInfo.gammaCloseToSRGB());
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SkImageInfo linearGamma =
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offscreenInfo.makeColorSpace(offscreenInfo.colorSpace()->makeLinearGamma());
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bitmap.allocPixels(linearGamma);
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SkCanvas lgOffscreen(bitmap);
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lgOffscreen.drawRect(SkRect::MakeWH(width, height), gradPaint);
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canvas->translate(0, 80);
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canvas->drawBitmap(bitmap, 0, 0);
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drawLabel("linear", linearGamma.gammaCloseToSRGB());
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}
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} // END FIDDLE
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#endif // Disabled until updated to use current API.
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