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 "DecodeFile.h"
9#include "SampleCode.h"
10#include "SkView.h"
11#include "SkCanvas.h"
12#include "SkCornerPathEffect.h"
13#include "SkGradientShader.h"
14#include "SkGraphics.h"
15#include "SkPath.h"
16#include "SkRandom.h"
17#include "SkRegion.h"
18#include "SkShader.h"
19#include "SkUtils.h"
20#include "SkColorPriv.h"
21#include "SkColorFilter.h"
22#include "SkTime.h"
23#include "SkTypeface.h"
24#include "SkStream.h"
25#include "SkColorPriv.h"
26
27class LinesView : public SampleView {
28public:
29    LinesView() {}
30
31protected:
32    // overrides from SkEventSink
33    bool onQuery(SkEvent* evt) override {
34        if (SampleCode::TitleQ(*evt)) {
35            SampleCode::TitleR(evt, "Lines");
36            return true;
37        }
38        return this->INHERITED::onQuery(evt);
39    }
40
41    /*
42     0x1F * x + 0x1F * (32 - x)
43     */
44    void drawRings(SkCanvas* canvas) {
45        canvas->scale(SkIntToScalar(1)/2, SkIntToScalar(1)/2);
46
47        SkRect  r;
48        SkScalar x = SkIntToScalar(10);
49        SkScalar y = SkIntToScalar(10);
50        r.set(x, y, x + SkIntToScalar(100), y + SkIntToScalar(100));
51
52        SkPaint paint;
53     //   paint.setAntiAlias(true);
54        paint.setStyle(SkPaint::kStroke_Style);
55        paint.setStrokeWidth(SkScalarHalf(SkIntToScalar(3)));
56        paint.setColor(0xFFFF8800);
57     //   paint.setColor(0xFFFFFFFF);
58        canvas->drawRect(r, paint);
59    }
60
61    void onDrawContent(SkCanvas* canvas) override {
62        SkBitmap bm;
63        decode_file("/kill.gif", &bm);
64        canvas->drawBitmap(bm, 0, 0, nullptr);
65
66        this->drawRings(canvas);
67        return;
68
69        SkPaint paint;
70
71      //  fAlpha = 0x80;
72        paint.setColor(SK_ColorWHITE);
73        paint.setAlpha(fAlpha & 0xFF);
74        SkRect r;
75
76        SkScalar x = SkIntToScalar(10);
77        SkScalar y = SkIntToScalar(10);
78        r.set(x, y, x + SkIntToScalar(100), y + SkIntToScalar(100));
79        canvas->drawRect(r, paint);
80        return;
81
82        paint.setColor(0xffffff00);            // yellow
83        paint.setStyle(SkPaint::kStroke_Style);
84        paint.setStrokeWidth(SkIntToScalar(2));
85
86//        y += SK_Scalar1/2;
87
88        canvas->drawLine(x, y, x + SkIntToScalar(90), y + SkIntToScalar(90), paint);
89
90        paint.setAntiAlias(true);              // with anti-aliasing
91        y += SkIntToScalar(10);
92        canvas->drawLine(x, y, x + SkIntToScalar(90), y + SkIntToScalar(90), paint);
93    }
94
95    SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) override {
96        fAlpha = SkScalarRoundToInt(y);
97        return nullptr;
98    }
99private:
100
101    int fAlpha;
102    typedef SampleView INHERITED;
103};
104
105//////////////////////////////////////////////////////////////////////////////
106
107static SkView* MyFactory() { return new LinesView; }
108static SkViewRegister reg(MyFactory);
109