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/TextBlob_001.cpp b/docs/examples/TextBlob_001.cpp
new file mode 100644
index 0000000..6992079
--- /dev/null
+++ b/docs/examples/TextBlob_001.cpp
@@ -0,0 +1,40 @@
+#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=6e12cceca981ddabc0fc18c380543f34
+REG_FIDDLE(TextBlob_001, 256, 256, false, 0) {
+void draw(SkCanvas* canvas) {
+ for (int index = 0; index < 2; ++index) {
+ SkTextBlobBuilder textBlobBuilder;
+ const char bunny[] = "/(^x^)\\";
+ const int len = sizeof(bunny) - 1;
+ uint16_t glyphs[len];
+ SkPaint paint;
+ paint.textToGlyphs(bunny, len, glyphs);
+ paint.setTextEncoding(kGlyphID_SkTextEncoding);
+ paint.setTextScaleX(0.5);
+ SkFont font;
+ font.setScaleX(0.5);
+ int runs[] = { 3, 1, 3 };
+ SkPoint textPos = { 20, 50 };
+ int glyphIndex = 0;
+ for (auto runLen : runs) {
+ font.setSize(1 == runLen ? 20 : 50);
+ paint.setTextSize(1 == runLen ? 20 : 50);
+ const SkTextBlobBuilder::RunBuffer& run =
+ textBlobBuilder.allocRun(font, runLen, textPos.fX, textPos.fY);
+ memcpy(run.glyphs, &glyphs[glyphIndex], sizeof(glyphs[0]) * runLen);
+ textPos.fX += paint.measureText(&glyphs[glyphIndex], sizeof(glyphs[0]) * runLen, nullptr);
+ glyphIndex += runLen;
+ }
+ sk_sp<const SkTextBlob> blob = textBlobBuilder.make();
+ paint.reset();
+ canvas->drawTextBlob(blob.get(), 0, 0, paint);
+ std::string id = "unique ID:" + std::to_string(blob->uniqueID());
+ canvas->drawString(id.c_str(), 30, blob->bounds().fBottom + 15, paint);
+ canvas->translate(blob->bounds().fRight + 10, 0);
+ }
+}
+} // END FIDDLE
+#endif // Disabled until updated to use current API.