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
21static const SkColor bgColor = SK_ColorWHITE;
22
23static void create(SkBitmap* bm, SkIRect bound) {
24    bm->allocN32Pixels(bound.width(), bound.height());
25}
26
27static 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 */
36static 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
63DEF_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        sk_sp<SkTypeface> streamTypeface(SkTypeface::MakeFromStream(fontData.release()));
92
93        SkFontDescriptor desc;
94        bool isLocalStream = false;
95        streamTypeface->getFontDescriptor(&desc, &isLocalStream);
96        REPORTER_ASSERT(reporter, isLocalStream);
97
98        paint.setTypeface(streamTypeface);
99        drawBG(&streamCanvas);
100        streamCanvas.drawPosText("A", 1, &point, paint);
101
102        REPORTER_ASSERT(reporter,
103                        compare(origBitmap, origRect, streamBitmap, streamRect));
104    }
105    //Make sure the typeface is deleted and removed.
106    SkGraphics::PurgeFontCache();
107}
108