skia2/docs/examples/Image_036.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

31 lines
1.4 KiB
C++

#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=eeec9e07e604b44d0208899a2fe5bef5
REG_FIDDLE(Image_036, 256, 256, false, 5) {
void draw(SkCanvas* canvas) {
auto drawImage = [=](sk_sp<SkImage> image, GrContext* context, const char* label) -> void {
if (nullptr == image || nullptr == context) {
return;
}
SkPaint paint;
paint.setAntiAlias(true);
sk_sp<SkImage> texture(image->makeTextureImage(context, nullptr));
canvas->drawImage(texture, 0, 0);
canvas->drawString(label, 20, texture->height() / 4, paint);
};
sk_sp<SkImage> bitmapImage(SkImage::MakeFromBitmap(source));
GrContext* context = canvas->getGrContext();
sk_sp<SkImage> textureImage(SkImage::MakeFromTexture(context, backEndTexture,
kTopLeft_GrSurfaceOrigin, kRGBA_8888_SkColorType,
kOpaque_SkAlphaType, nullptr));
drawImage(image, context, "image");
canvas->translate(image->width(), 0);
drawImage(bitmapImage, context, "source");
canvas->translate(-image->width(), image->height());
drawImage(textureImage, context, "backEndTexture");
}
} // END FIDDLE
#endif // Disabled until updated to use current API.