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>
32 lines
1.2 KiB
C++
32 lines
1.2 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=d56f93e4bc763c7ba4914321ed07a8b5
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REG_FIDDLE(Matrix_079, 256, 256, false, 0) {
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void draw(SkCanvas* canvas) {
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SkPoint3 src[] = {{3, 3, 1}, {8, 2, 2}, {5, 0, 4}, {0, 1, 3},
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{3, 7, 1}, {8, 6, 2}, {5, 4, 4}, {0, 5, 3}};
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int lines[] = { 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 };
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constexpr int count = SK_ARRAY_COUNT(src);
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auto debugster = [=](SkPoint3 src[]) -> void {
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for (size_t i = 0; i < SK_ARRAY_COUNT(lines); i += 2) {
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const SkPoint3& s = src[lines[i]];
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const SkPoint3& e = src[lines[i + 1]];
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SkPaint paint;
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paint.setARGB(77, 23, 99, 154);
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canvas->drawLine(s.fX / s.fZ, s.fY / s.fZ, e.fX / e.fZ, e.fY / e.fZ, paint);
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}
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};
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canvas->save();
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canvas->translate(5, 5);
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canvas->scale(15, 15);
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debugster(src);
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canvas->restore();
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canvas->translate(128, 128);
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SkMatrix matrix;
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matrix.setAll(15, 0, 0, 0, 15, 0, -0.08, 0.04, 1);
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matrix.mapHomogeneousPoints(src, src, count);
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debugster(src);
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}
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} // END FIDDLE
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