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/Matrix_012.cpp b/docs/examples/Matrix_012.cpp
new file mode 100644
index 0000000..8b2619b
--- /dev/null
+++ b/docs/examples/Matrix_012.cpp
@@ -0,0 +1,31 @@
+#if 0 // Disabled until updated to use current API.
+// 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=8b37f4ae7fec1756433c0f984175fb14
+REG_FIDDLE(Matrix_012, 256, 256, false, 0) {
+void draw(SkCanvas* canvas) {
+ SkPaint p;
+ p.setAntiAlias(true);
+ SkMatrix m;
+ int below = 175;
+ for (SkScalar sx : { -1, 1 } ) {
+ for (SkScalar sy : { -1, 1 } ) {
+ m.setAll(sx, 1, 128, 1, sy, 32, 0, 0, 1);
+ bool isSimilarity = m.isSimilarity();
+ SkString str;
+ str.printf("sx: %g sy: %g sim: %s", sx, sy, isSimilarity ? "true" : "false");
+ {
+ SkAutoCanvasRestore autoRestore(canvas, true);
+ canvas->concat(m);
+ canvas->drawString(str, 0, 0, p);
+ }
+ if (!isSimilarity) {
+ canvas->drawString(str, 40, below, p);
+ below += 20;
+ }
+ }
+ }
+}
+} // END FIDDLE
+#endif // Disabled until updated to use current API.