skia2/gm/skbug_5321.cpp

47 lines
1.3 KiB
C++
Raw Normal View History

/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkFont.h"
#include "include/core/SkFontTypes.h"
#include "include/core/SkPaint.h"
#include "include/core/SkScalar.h"
#include "include/core/SkTextBlob.h"
#include <string.h>
// https://bugs.skia.org/5321
// two strings should draw the same. PDF did not.
DEF_SIMPLE_GM(skbug_5321, canvas, 128, 128) {
SkFont font;
font.setEdging(SkFont::Edging::kAlias);
font.setSize(30);
const char text[] = "x\314\200y"; // utf8(u"x\u0300y")
SkScalar x = 20, y = 45;
size_t byteLength = strlen(text);
canvas->drawSimpleText(text, byteLength, SkTextEncoding::kUTF8, x, y, font, SkPaint());
y += font.getMetrics(nullptr);
int glyph_count = font.countText(text, byteLength, SkTextEncoding::kUTF8);
SkTextBlobBuilder builder;
auto rec = builder.allocRunPosH(font, glyph_count, y);
font.textToGlyphs(text, byteLength, SkTextEncoding::kUTF8, rec.glyphs, glyph_count);
font.getWidths(rec.glyphs, glyph_count, rec.pos);
for (int i = 0; i < glyph_count; ++i) {
SkScalar w = rec.pos[i];
rec.pos[i] = x;
x += w;
}
canvas->drawTextBlob(builder.make(), 0, 0, SkPaint());
}