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/Path_068.cpp b/docs/examples/Path_068.cpp
new file mode 100644
index 0000000..3bf95c4
--- /dev/null
+++ b/docs/examples/Path_068.cpp
@@ -0,0 +1,42 @@
+#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=386000684073fccabc224d7d6dc81cd9
+REG_FIDDLE(Path_068, 256, 226, false, 0) {
+void draw(SkCanvas* canvas) {
+ SkPaint tangentPaint;
+ tangentPaint.setAntiAlias(true);
+ SkPaint textPaint(tangentPaint);
+ tangentPaint.setStyle(SkPaint::kStroke_Style);
+ tangentPaint.setColor(SK_ColorGRAY);
+ SkPaint arcPaint(tangentPaint);
+ arcPaint.setStrokeWidth(5);
+ arcPaint.setColor(SK_ColorBLUE);
+ SkPath path;
+ SkPoint pts[] = { {56, 20}, {200, 20}, {90, 190} };
+ SkScalar radius = 50;
+ path.moveTo(pts[0]);
+ path.arcTo(pts[1], pts[2], radius);
+ canvas->drawLine(pts[0], pts[1], tangentPaint);
+ canvas->drawLine(pts[1], pts[2], tangentPaint);
+ SkPoint lastPt;
+ (void) path.getLastPt(&lastPt);
+ SkVector radial = pts[2] - pts[1];
+ radial.setLength(radius);
+ SkPoint center = { lastPt.fX - radial.fY, lastPt.fY + radial.fX };
+ canvas->drawCircle(center, radius, tangentPaint);
+ canvas->drawLine(lastPt, center, tangentPaint);
+ radial = pts[1] - pts[0];
+ radial.setLength(radius);
+ SkPoint arcStart = { center.fX + radial.fY, center.fY - radial.fX };
+ canvas->drawLine(center, arcStart, tangentPaint);
+ canvas->drawPath(path, arcPaint);
+ canvas->drawString("(x0, y0)", pts[0].fX - 5, pts[0].fY, textPaint);
+ canvas->drawString("(x1, y1)", pts[1].fX + 5, pts[1].fY, textPaint);
+ canvas->drawString("(x2, y2)", pts[2].fX, pts[2].fY + 15, textPaint);
+ canvas->drawString("radius", center.fX + 15, center.fY + 25, textPaint);
+ canvas->drawString("radius", center.fX - 3, center.fY - 16, textPaint);
+}
+} // END FIDDLE
+#endif // Disabled until updated to use current API.