aosp12/external/skia/docs/examples/Path_addRRect_2.cpp

31 lines
1.1 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 "tools/fiddle/examples.h"
// HASH=888edd4c4a91ca62ceb01bce8ab675b2
REG_FIDDLE(Path_addRRect_2, 256, 256, false, 0) {
void draw(SkCanvas* canvas) {
SkPaint paint;
paint.setAntiAlias(true);
SkRRect rrect;
rrect.setRectXY({40, 40, 215, 215}, 50, 50);
SkPath path;
path.addRRect(rrect);
canvas->drawPath(path, paint);
for (int start = 0; start < 8; ++start) {
SkPath textPath;
textPath.addRRect(rrect, SkPathDirection::kCW, start);
SkPathMeasure pathMeasure(textPath, false);
SkPoint position;
SkVector tangent;
if (!pathMeasure.getPosTan(0, &position, &tangent)) {
continue;
}
SkRSXform rsxForm = SkRSXform::Make(tangent.fX, tangent.fY,
position.fX + tangent.fY * 5, position.fY - tangent.fX * 5);
SkFont font(nullptr, 12);
auto labels = SkTextBlob::MakeFromRSXform(&"01234567"[start], 1, &rsxForm, font);
canvas->drawTextBlob(labels, 0, 0, paint);
}
}
} // END FIDDLE