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/Bitmap_052.cpp b/docs/examples/Bitmap_052.cpp
new file mode 100644
index 0000000..54e29cb
--- /dev/null
+++ b/docs/examples/Bitmap_052.cpp
@@ -0,0 +1,45 @@
+// 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=eb6f861ca1839146d26e40d56c2a001c
+REG_FIDDLE(Bitmap_052, 256, 100, false, 0) {
+class LargePixelRef : public SkPixelRef {
+public:
+ LargePixelRef(const SkImageInfo& info, char* storage, size_t rowBytes)
+ : SkPixelRef(info.width(), info.height(), storage, rowBytes) {
+ }
+ ~LargePixelRef() override {
+ delete[] (char* ) this->pixels();
+ }
+};
+class LargeAllocator : public SkBitmap::Allocator {
+public:
+ bool allocPixelRef(SkBitmap* bitmap) override {
+ const SkImageInfo& info = bitmap->info();
+ uint64_t rowBytes = info.minRowBytes64();
+ uint64_t size = info.height() * rowBytes;
+ char* addr = new char[size];
+ if (nullptr == addr) {
+ return false;
+ }
+ sk_sp<SkPixelRef> pr = sk_sp<SkPixelRef>(new LargePixelRef(info, addr, rowBytes));
+ if (!pr) {
+ return false;
+ }
+ bitmap->setPixelRef(std::move(pr), 0, 0);
+ return true;
+ }
+};
+
+void draw(SkCanvas* canvas) {
+ LargeAllocator largeAllocator;
+ SkBitmap bitmap;
+ int width = 100; // make this 20000
+ int height = 100; // and this 100000 to allocate 8 gigs on a 64-bit platform
+ bitmap.setInfo(SkImageInfo::MakeN32(width, height, kOpaque_SkAlphaType));
+ if (bitmap.tryAllocPixels(&largeAllocator)) {
+ bitmap.eraseColor(0xff55aa33);
+ canvas->drawBitmap(bitmap, 0, 0);
+ }
+}
+} // END FIDDLE