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>
23 lines
907 B
C++
23 lines
907 B
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=39016b3cfc6bbabb09348a53822ce508
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REG_FIDDLE(Matrix_094, 256, 256, true, 0) {
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void draw(SkCanvas* canvas) {
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auto debugster = [](const char* prefix, const SkMatrix& a, const SkMatrix& b) -> void {
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SkDebugf("%s: a %c= b a.cheapEqualTo(b): %s\n", prefix,
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a == b ? '=' : '!', a.cheapEqualTo(b) ? "true" : "false");
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};
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SkMatrix a, b;
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a.setAll(1, 0, 0, 0, 1, 0, 0, 0, 1);
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b.setIdentity();
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debugster("identity", a, b);
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a.setAll(1, -0.0f, 0, 0, 1, 0, 0, 0, 1);
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debugster("neg zero", a, b);
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a.setAll(1, SK_ScalarNaN, 0, 0, 1, 0, 0, 0, 1);
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debugster(" one NaN", a, b);
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b.setAll(1, SK_ScalarNaN, 0, 0, 1, 0, 0, 0, 1);
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debugster("both NaN", a, b);
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}
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} // END FIDDLE
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