1 /*
2 * Copyright 2014 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.h"
9 #include "sk_tool_utils.h"
10 #include "SkCanvas.h"
11 #include "SkDashPathEffect.h"
12 #include "SkTextBlob.h"
13
test_nulldev(SkCanvas * canvas)14 static void test_nulldev(SkCanvas* canvas) {
15 SkBitmap bm;
16 bm.setInfo(SkImageInfo::MakeN32Premul(30, 30));
17 // notice: no pixels mom! be sure we don't crash
18 // https://code.google.com/p/chromium/issues/detail?id=352616
19 SkCanvas c(bm);
20
21 SkBitmap src;
22 src.allocN32Pixels(10, 10);
23 src.eraseColor(SK_ColorRED);
24
25 // ensure we don't crash
26 c.writePixels(src, 0, 0);
27 }
28
draw_text_stroked(SkCanvas * canvas,const SkPaint & paint,const SkFont & font,SkScalar strokeWidth)29 static void draw_text_stroked(SkCanvas* canvas, const SkPaint& paint, const SkFont& font,
30 SkScalar strokeWidth) {
31 SkPaint p(paint);
32 SkPoint loc = { 20, 435 };
33
34 if (strokeWidth > 0) {
35 p.setStyle(SkPaint::kFill_Style);
36 canvas->drawSimpleText("P", 1, kUTF8_SkTextEncoding, loc.fX, loc.fY - 225, font, p);
37 canvas->drawTextBlob(SkTextBlob::MakeFromPosText("P", 1, &loc, font), 0, 0, p);
38 }
39
40 p.setColor(SK_ColorRED);
41 p.setStyle(SkPaint::kStroke_Style);
42 p.setStrokeWidth(strokeWidth);
43
44 canvas->drawSimpleText("P", 1, kUTF8_SkTextEncoding, loc.fX, loc.fY - 225, font, p);
45 canvas->drawTextBlob(SkTextBlob::MakeFromPosText("P", 1, &loc, font), 0, 0, p);
46 }
47
draw_text_set(SkCanvas * canvas,const SkPaint & paint,const SkFont & font)48 static void draw_text_set(SkCanvas* canvas, const SkPaint& paint, const SkFont& font) {
49 SkAutoCanvasRestore acr(canvas, true);
50
51 draw_text_stroked(canvas, paint, font, 10);
52
53 canvas->translate(200, 0);
54 draw_text_stroked(canvas, paint, font, 0);
55
56 const SkScalar intervals[] = { 20, 10, 5, 10 };
57 const SkScalar phase = 0;
58
59 canvas->translate(200, 0);
60 SkPaint p(paint);
61 p.setPathEffect(SkDashPathEffect::Make(intervals, SK_ARRAY_COUNT(intervals), phase));
62 draw_text_stroked(canvas, p, font, 10);
63 }
64
65 namespace {
66 enum {
67 kBelowThreshold_TextSize = 255,
68 kAboveThreshold_TextSize = 257
69 };
70 }
71
72 DEF_SIMPLE_GM(stroketext, canvas, 1200, 480) {
73 if (true) { test_nulldev(canvas); }
74
75 SkPaint paint;
76 paint.setAntiAlias(true);
77
78 SkFont font(sk_tool_utils::create_portable_typeface(), kBelowThreshold_TextSize);
79 draw_text_set(canvas, paint, font);
80
81 canvas->translate(600, 0);
82 font.setSize(kAboveThreshold_TextSize);
83 draw_text_set(canvas, paint, font);
84 }
85