submodule/skia/gm/getpostextpath.cpp

   1 /*
   2  * Copyright 2012 Google Inc.
   3  *
   4  * Use of this source code is governed by a BSD-style license that can be
   5  * found in the LICENSE file.
   6  */
   7
   8 #include "gm/gm.h"
   9 #include "include/core/SkCanvas.h"
  10 #include "include/core/SkColor.h"
  11 #include "include/core/SkFont.h"
  12 #include "include/core/SkFontTypes.h"
  13 #include "include/core/SkPaint.h"
  14 #include "include/core/SkPath.h"
  15 #include "include/core/SkPoint.h"
  16 #include "include/core/SkScalar.h"
  17 #include "include/core/SkTextBlob.h"
  18 #include "include/core/SkTypeface.h"
  19 #include "include/private/SkTemplates.h"
  20 #include "include/utils/SkRandom.h"
  21 #include "src/core/SkFontPriv.h"
  22 #include "tools/ToolUtils.h"
  23
  24 #include <string.h>
  25
  26 static void strokePath(SkCanvas* canvas, const SkPath& path) {
  27     SkPaint paint;
  28     paint.setAntiAlias(true);
  29     paint.setColor(SK_ColorRED);
  30     paint.setStyle(SkPaint::kStroke_Style);
  31     canvas->drawPath(path, paint);
  32 }
  33 DEF_SIMPLE_GM(getpostextpath, canvas, 480, 780) {
  34     // explicitly add spaces, to test a prev. bug
  35     const char* text = "Ham bur ge fons";
  36     size_t len = strlen(text);
  37     SkPath path;
  38
  39     SkFont font;
  40     font.setTypeface(ToolUtils::create_portable_typeface());
  41     font.setSize(48);
  42
  43     SkPaint paint;
  44     paint.setAntiAlias(true);
  45
  46     canvas->translate(SkIntToScalar(10), SkIntToScalar(64));
  47
  48     canvas->drawSimpleText(text, len, SkTextEncoding::kUTF8, 0, 0, font, paint);
  49     ToolUtils::get_text_path(font, text, len, SkTextEncoding::kUTF8, &path, nullptr);
  50     strokePath(canvas, path);
  51     path.reset();
  52
  53     SkAutoToGlyphs atg(font, text, len, SkTextEncoding::kUTF8);
  54     const int count = atg.count();
  55     SkAutoTArray<SkPoint>  pos(count);
  56     SkAutoTArray<SkScalar> widths(count);
  57     font.getWidths(atg.glyphs(), count, &widths[0]);
  58
  59     SkRandom rand;
  60     SkScalar x = SkIntToScalar(20);
  61     SkScalar y = SkIntToScalar(100);
  62     for (int i = 0; i < count; ++i) {
  63         pos[i].set(x, y + rand.nextSScalar1() * 24);
  64         x += widths[i];
  65     }
  66
  67     canvas->translate(0, SkIntToScalar(64));
  68
  69     canvas->drawTextBlob(SkTextBlob::MakeFromPosText(text, len, &pos[0], font), 0, 0, paint);
  70     ToolUtils::get_text_path(font, text, len, SkTextEncoding::kUTF8, &path, &pos[0]);
  71     strokePath(canvas, path);
  72 }