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>
30 lines
1.4 KiB
C++
30 lines
1.4 KiB
C++
// 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=de418ccb42471d1589508ef3955f8c53
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REG_FIDDLE(ImageInfo_019, 256, 128, 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 = 32;
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SkImageInfo info = SkImageInfo::MakeN32Premul(width, height);
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SkColor gradColors[] = { 0xFFAA0055, 0xFF11CC88 };
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SkPoint gradPoints[] = { { 0, 0 }, { width, 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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SkBitmap bitmap;
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bitmap.allocPixels(SkImageInfo::MakeN32(width, height, kPremul_SkAlphaType));
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SkCanvas offScreen(bitmap);
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offScreen.drawRect(SkRect::MakeWH(width, height), gradPaint);
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canvas->drawBitmap(bitmap, 0, 0);
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bitmap.allocPixels(SkImageInfo::MakeS32(width, height, kPremul_SkAlphaType));
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SkCanvas sRGBOffscreen(bitmap);
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sRGBOffscreen.drawRect(SkRect::MakeWH(width, height), gradPaint);
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canvas->drawBitmap(bitmap, 0, 48);
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SkBitmap noColorSpaceBitmap;
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noColorSpaceBitmap.setInfo(SkImageInfo::MakeN32(width, height, kPremul_SkAlphaType));
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noColorSpaceBitmap.setPixels(bitmap.getAddr(0, 0));
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canvas->drawBitmap(noColorSpaceBitmap, 0, 96);
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}
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} // END FIDDLE
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