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 SkAutoLockPixels alpRef(ref);
43 SkAutoLockPixels alpTest(test);
44
45 for (int y = 0; y < test.height(); ++y) {
46 for (int x = 0; x < test.width(); ++x) {
47 SkColor testColor = test.getColor(x, y);
48 int refX = x + xOff;
49 int refY = y + yOff;
50 SkColor refColor;
51 if (refX >= 0 && refX < ref.width() &&
52 refY >= 0 && refY < ref.height())
53 {
54 refColor = ref.getColor(refX, refY);
55 } else {
56 refColor = bgColor;
57 }
58 if (refColor != testColor) {
59 return false;
60 }
61 }
62 }
63 return true;
64 }
65
DEF_TEST(FontHostStream,reporter)66 DEF_TEST(FontHostStream, reporter) {
67 {
68 SkPaint paint;
69 paint.setColor(SK_ColorGRAY);
70 paint.setTextSize(SkIntToScalar(30));
71
72 paint.setTypeface(SkTypeface::MakeFromName("Georgia", SkFontStyle()));
73
74 SkIRect origRect = SkIRect::MakeWH(64, 64);
75 SkBitmap origBitmap;
76 create(&origBitmap, origRect);
77 SkCanvas origCanvas(origBitmap);
78
79 SkIRect streamRect = SkIRect::MakeWH(64, 64);
80 SkBitmap streamBitmap;
81 create(&streamBitmap, streamRect);
82 SkCanvas streamCanvas(streamBitmap);
83
84 SkPoint point = SkPoint::Make(24, 32);
85
86 // Test: origTypeface and streamTypeface from orig data draw the same
87 drawBG(&origCanvas);
88 origCanvas.drawText("A", 1, point.fX, point.fY, paint);
89
90 sk_sp<SkTypeface> typeface(paint.getTypeface() ? paint.refTypeface()
91 : SkTypeface::MakeDefault());
92 int ttcIndex;
93 std::unique_ptr<SkStreamAsset> fontData(typeface->openStream(&ttcIndex));
94 sk_sp<SkTypeface> streamTypeface(SkTypeface::MakeFromStream(fontData.release()));
95
96 SkFontDescriptor desc;
97 bool isLocalStream = false;
98 streamTypeface->getFontDescriptor(&desc, &isLocalStream);
99 REPORTER_ASSERT(reporter, isLocalStream);
100
101 paint.setTypeface(streamTypeface);
102 drawBG(&streamCanvas);
103 streamCanvas.drawPosText("A", 1, &point, paint);
104
105 REPORTER_ASSERT(reporter,
106 compare(origBitmap, origRect, streamBitmap, streamRect));
107 }
108 //Make sure the typeface is deleted and removed.
109 SkGraphics::PurgeFontCache();
110 }
111