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/ImageInfo_005.cpp b/docs/examples/ImageInfo_005.cpp
new file mode 100644
index 0000000..4278eaf
--- /dev/null
+++ b/docs/examples/ImageInfo_005.cpp
@@ -0,0 +1,30 @@
+// 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=33a360c3404ac21db801943336843d8e
+REG_FIDDLE(ImageInfo_005, 256, 96, false, 0) {
+void draw(SkCanvas* canvas) {
+ canvas->scale(16, 16);
+ SkBitmap bitmap;
+ SkImageInfo imageInfo = SkImageInfo::Make(2, 2, kARGB_4444_SkColorType, kPremul_SkAlphaType);
+ bitmap.allocPixels(imageInfo);
+ SkCanvas offscreen(bitmap);
+ offscreen.clear(SK_ColorGREEN);
+ canvas->drawBitmap(bitmap, 0, 0);
+ auto pack4444 = [](unsigned a, unsigned r, unsigned g, unsigned b) -> uint16_t {
+ return (a << 0) | (b << 4) | (g << 8) | (r << 12);
+ };
+ uint16_t red4444[] = { pack4444(0xF, 0xF, 0x0, 0x0), pack4444(0xF, 0xb, 0x0, 0x0),
+ pack4444(0xF, 0x7, 0x0, 0x0), pack4444(0xF, 0x3, 0x0, 0x0) };
+ uint16_t blue4444[] = { pack4444(0xF, 0x0, 0x0, 0xF), pack4444(0xF, 0x0, 0x0, 0xb),
+ pack4444(0xF, 0x0, 0x0, 0x7), pack4444(0xF, 0x0, 0x0, 0x3) };
+ SkPixmap redPixmap(imageInfo, &red4444, imageInfo.minRowBytes());
+ if (bitmap.writePixels(redPixmap, 0, 0)) {
+ canvas->drawBitmap(bitmap, 2, 2);
+ }
+ SkPixmap bluePixmap(imageInfo, &blue4444, imageInfo.minRowBytes());
+ if (bitmap.writePixels(bluePixmap, 0, 0)) {
+ canvas->drawBitmap(bitmap, 4, 4);
+ }
+}
+} // END FIDDLE