Compile all fiddle examples locally
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>
diff --git a/docs/examples/Bitmap_069.cpp b/docs/examples/Bitmap_069.cpp
new file mode 100644
index 0000000..7da8c49
--- /dev/null
+++ b/docs/examples/Bitmap_069.cpp
@@ -0,0 +1,28 @@
+// Copyright 2019 Google LLC.
+// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
+#include "fiddle/examples.h"
+// HASH=b2cbbbbcffb618865d8aae3bc04b2a62
+REG_FIDDLE(Bitmap_069, 256, 128, false, 0) {
+void draw(SkCanvas* canvas) {
+ const int width = 256;
+ const int height = 64;
+ SkImageInfo srcInfo = SkImageInfo::MakeN32Premul(width, height);
+ SkColor gradColors[] = { 0xFFAA3300, 0x7F881122 };
+ SkPoint gradPoints[] = { { 0, 0 }, { 256, 0 } };
+ SkPaint paint;
+ paint.setShader(SkGradientShader::MakeLinear(gradPoints, gradColors, nullptr,
+ SK_ARRAY_COUNT(gradColors), SkShader::kClamp_TileMode));
+ SkBitmap bitmap;
+ bitmap.allocPixels(srcInfo);
+ SkCanvas srcCanvas(bitmap);
+ srcCanvas.drawRect(SkRect::MakeWH(width, height), paint);
+ canvas->drawBitmap(bitmap, 0, 0);
+ SkImageInfo dstInfo = srcInfo.makeColorType(kARGB_4444_SkColorType);
+ std::vector<int16_t> dstPixels;
+ dstPixels.resize(height * width);
+ bitmap.readPixels(dstInfo, &dstPixels.front(), width * 2, 0, 0);
+ SkPixmap dstPixmap(dstInfo, &dstPixels.front(), width * 2);
+ bitmap.installPixels(dstPixmap);
+ canvas->drawBitmap(bitmap, 0, 64);
+}
+} // END FIDDLE