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/Pixmap_008.cpp b/docs/examples/Pixmap_008.cpp
new file mode 100644
index 0000000..a9031c0
--- /dev/null
+++ b/docs/examples/Pixmap_008.cpp
@@ -0,0 +1,18 @@
+// 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=17bcabaaee2dbb7beba562e9ca50b55e
+REG_FIDDLE(Pixmap_008, 256, 256, true, 3) {
+void draw(SkCanvas* canvas) {
+ std::vector<int32_t> pixels;
+ pixels.resize(image->height() * image->width() * 4);
+ SkPixmap pixmap(SkImageInfo::Make(image->width(), image->height(), kN32_SkColorType,
+ image->alphaType()), (const void*) &pixels.front(), image->width() * 4);
+ image->readPixels(pixmap, 0, 0);
+ SkDebugf("pixels address: 0x%llx\n", pixmap.addr());
+ SkPixmap inset;
+ if (pixmap.extractSubset(&inset, {128, 128, 512, 512})) {
+ SkDebugf("inset address: 0x%llx\n", inset.addr());
+ }
+}
+} // END FIDDLE