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/Surface_001.cpp b/docs/examples/Surface_001.cpp
new file mode 100644
index 0000000..6b57e3c
--- /dev/null
+++ b/docs/examples/Surface_001.cpp
@@ -0,0 +1,33 @@
+// 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=8e6530b26ab4096a9a91cfaadda1c568
+REG_FIDDLE(Surface_001, 256, 256, true, 0) {
+static void release_direct_surface_storage(void* pixels, void* context) {
+ if (pixels == context) {
+ SkDebugf("expected release context\n");
+ }
+ sk_free(pixels);
+}
+
+void draw(SkCanvas* ) {
+ SkImageInfo info = SkImageInfo::MakeN32Premul(3, 3);
+ const size_t rowBytes = info.minRowBytes();
+ void* pixels = sk_malloc_throw(info.computeByteSize(rowBytes));
+ sk_sp<SkSurface> surface(SkSurface::MakeRasterDirectReleaseProc(info, pixels, rowBytes,
+ release_direct_surface_storage, pixels));
+ SkCanvas* canvas = surface->getCanvas();
+ canvas->clear(SK_ColorWHITE);
+ SkPMColor* colorPtr = (SkPMColor*) pixels;
+ SkPMColor pmWhite = colorPtr[0];
+ SkPaint paint;
+ canvas->drawPoint(1, 1, paint);
+ canvas->flush(); // ensure that point was drawn
+ for (int y = 0; y < info.height(); ++y) {
+ for (int x = 0; x < info.width(); ++x) {
+ SkDebugf("%c", *colorPtr++ == pmWhite ? '-' : 'x');
+ }
+ SkDebugf("\n");
+ }
+}
+} // END FIDDLE