skia2/docs/examples/Canvas_086.cpp
Hal Canary 83c2f70b51 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>
2019-03-15 15:19:18 +00:00

39 lines
1.3 KiB
C++

// 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=fe2294131f422b8d6752f6a880f98ad9
REG_FIDDLE(Canvas_086, 256, 256, false, 0) {
void draw(SkCanvas* canvas) {
SkPath path;
path.moveTo(20, 20);
path.quadTo(60, 20, 60, 60);
path.close();
path.moveTo(60, 20);
path.quadTo(60, 60, 20, 60);
SkPaint paint;
paint.setStrokeWidth(10);
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
for (auto join: { SkPaint::kBevel_Join, SkPaint::kRound_Join, SkPaint::kMiter_Join } ) {
paint.setStrokeJoin(join);
for (auto cap: { SkPaint::kButt_Cap, SkPaint::kSquare_Cap, SkPaint::kRound_Cap } ) {
paint.setStrokeCap(cap);
canvas->drawPath(path, paint);
canvas->translate(80, 0);
}
canvas->translate(-240, 60);
}
paint.setStyle(SkPaint::kFill_Style);
for (auto fill : { SkPath::kWinding_FillType,
SkPath::kEvenOdd_FillType,
SkPath::kInverseWinding_FillType } ) {
path.setFillType(fill);
canvas->save();
canvas->clipRect({0, 10, 80, 70});
canvas->drawPath(path, paint);
canvas->restore();
canvas->translate(80, 0);
}
}
} // END FIDDLE