1 /*
2 * Copyright 2011 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 "SkBitmap.h"
9 #include "SkCanvas.h"
10 #include "SkColor.h"
11 #include "SkFontDescriptor.h"
12 #include "SkGraphics.h"
13 #include "SkPaint.h"
14 #include "SkPoint.h"
15 #include "SkRect.h"
16 #include "SkStream.h"
17 #include "SkTypeface.h"
18 #include "SkTypes.h"
19 #include "Test.h"
20
21 static const SkColor bgColor = SK_ColorWHITE;
22
create(SkBitmap * bm,SkIRect bound)23 static void create(SkBitmap* bm, SkIRect bound) {
24 bm->allocN32Pixels(bound.width(), bound.height());
25 }
26
drawBG(SkCanvas * canvas)27 static void drawBG(SkCanvas* canvas) {
28 canvas->drawColor(bgColor);
29 }
30
31 /** Assumes that the ref draw was completely inside ref canvas --
32 implies that everything outside is "bgColor".
33 Checks that all overlap is the same and that all non-overlap on the
34 ref is "bgColor".
35 */
compare(const SkBitmap & ref,const SkIRect & iref,const SkBitmap & test,const SkIRect & itest)36 static bool compare(const SkBitmap& ref, const SkIRect& iref,
37 const SkBitmap& test, const SkIRect& itest)
38 {
39 const int xOff = itest.fLeft - iref.fLeft;
40 const int yOff = itest.fTop - iref.fTop;
41
42 for (int y = 0; y < test.height(); ++y) {
43 for (int x = 0; x < test.width(); ++x) {
44 SkColor testColor = test.getColor(x, y);
45 int refX = x + xOff;
46 int refY = y + yOff;
47 SkColor refColor;
48 if (refX >= 0 && refX < ref.width() &&
49 refY >= 0 && refY < ref.height())
50 {
51 refColor = ref.getColor(refX, refY);
52 } else {
53 refColor = bgColor;
54 }
55 if (refColor != testColor) {
56 return false;
57 }
58 }
59 }
60 return true;
61 }
62
DEF_TEST(FontHostStream,reporter)63 DEF_TEST(FontHostStream, reporter) {
64 {
65 SkPaint paint;
66 paint.setColor(SK_ColorGRAY);
67 paint.setTextSize(SkIntToScalar(30));
68
69 paint.setTypeface(SkTypeface::MakeFromName("Georgia", SkFontStyle()));
70
71 SkIRect origRect = SkIRect::MakeWH(64, 64);
72 SkBitmap origBitmap;
73 create(&origBitmap, origRect);
74 SkCanvas origCanvas(origBitmap);
75
76 SkIRect streamRect = SkIRect::MakeWH(64, 64);
77 SkBitmap streamBitmap;
78 create(&streamBitmap, streamRect);
79 SkCanvas streamCanvas(streamBitmap);
80
81 SkPoint point = SkPoint::Make(24, 32);
82
83 // Test: origTypeface and streamTypeface from orig data draw the same
84 drawBG(&origCanvas);
85 origCanvas.drawString("A", point.fX, point.fY, paint);
86
87 sk_sp<SkTypeface> typeface(paint.getTypeface() ? paint.refTypeface()
88 : SkTypeface::MakeDefault());
89 int ttcIndex;
90 std::unique_ptr<SkStreamAsset> fontData(typeface->openStream(&ttcIndex));
91 if (!fontData) {
92 // We're using a SkTypeface that can't give us a stream.
93 // This happens with portable or system fonts. End the test now.
94 return;
95 }
96
97 sk_sp<SkTypeface> streamTypeface(SkTypeface::MakeFromStream(fontData.release()));
98
99 SkFontDescriptor desc;
100 bool isLocalStream = false;
101 streamTypeface->getFontDescriptor(&desc, &isLocalStream);
102 REPORTER_ASSERT(reporter, isLocalStream);
103
104 paint.setTypeface(streamTypeface);
105 drawBG(&streamCanvas);
106 streamCanvas.drawPosText("A", 1, &point, paint);
107
108 REPORTER_ASSERT(reporter,
109 compare(origBitmap, origRect, streamBitmap, streamRect));
110 }
111 //Make sure the typeface is deleted and removed.
112 SkGraphics::PurgeFontCache();
113 }
114