1 using System;
2 using System.Windows;
3
4 namespace FileExplorer
5 {
6 public System.Windows.Color DefaultParentPathSelectorBackgroundColor()
7 {
8 return System.Windows.Color.White();
9 }
10
11 public System.Windows.Color DefaultParentPathSelectorMouseOverColor()
12 {
13 return System.Windows.Color(230u, 243u, 255u);
14 }
15
16 public System.Windows.Color DefaultParentPathSelectorMouseClickColor()
17 {
18 return System.Windows.Color(204u, 232u, 255u);
19 }
20
21 public Padding DefaultParentPathSelectorImagePadding()
22 {
23 return Padding(2, 7, 2, 7);
24 }
25
26 public ControlCreateParams& ParentPathSelectorControlCreateParams(ControlCreateParams& controlCreateParams)
27 {
28 return controlCreateParams.SetWindowClassName("FileExplorer.ParentPathSelector").
29 SetWindowClassBackgroundColor(SystemColor.COLOR_WINDOW).
30 SetBackgroundColor(DefaultParentPathSelectorBackgroundColor()).
31 SetSize(Size(20, 0)).SetDock(Dock.left);
32 }
33
34 public class ParentPathSelectorCreateParams
35 {
36 public ParentPathSelectorCreateParams(ControlCreateParams& controlCreateParams_, ImageList* imageList_) :
37 controlCreateParams(controlCreateParams_),
38 imageList(imageList_),
39 mouseOverColor(DefaultParentPathSelectorMouseOverColor()),
40 mouseClickColor(DefaultParentPathSelectorMouseClickColor()),
41 imagePadding(DefaultParentPathSelectorImagePadding())
42 {
43 }
44 public ParentPathSelectorCreateParams& Defaults()
45 {
46 return *this;
47 }
48 public ParentPathSelectorCreateParams& SetMouseOverColor(const System.Windows.Color& mouseOverColor_)
49 {
50 mouseOverColor = mouseOverColor_;
51 return *this;
52 }
53 public ParentPathSelectorCreateParams& SetMouseClickColor(const System.Windows.Color& mouseClickColor_)
54 {
55 mouseClickColor = mouseClickColor_;
56 return *this;
57 }
58 public ParentPathSelectorCreateParams& SetImagePadding(const Padding& imagePadding_)
59 {
60 imagePadding = imagePadding_;
61 return *this;
62 }
63 public ControlCreateParams& controlCreateParams;
64 public ImageList* imageList;
65 public System.Windows.Color mouseOverColor;
66 public System.Windows.Color mouseClickColor;
67 public Padding imagePadding;
68 }
69
70 public class ParentPathSelector : Control
71 {
72 public enum State
73 {
74 idle, mouseOver, clicked
75 }
76 public ParentPathSelector(ParentPathSelectorCreateParams& createParams) :
77 base(createParams.controlCreateParams),
78 state(State.idle),
79 mouseOverBrush(createParams.mouseOverColor),
80 mouseClickBrush(createParams.mouseClickColor),
81 imagePadding(createParams.imagePadding)
82 {
83 ImageList* imageList = createParams.imageList;
84 bitmap = imageList->GetImage(imageList->GetImageIndex("up.arrow.bitmap"));
85 }
86 [nodiscard]
87 public Result<bool> SetState(State state_)
88 {
89 if (state != state_)
90 {
91 state = state_;
92 auto result = Invalidate();
93 if (result.Error()) return result;
94 }
95 return Result<bool>(true);
96 }
97 protected override Result<bool> OnPaint(PaintEventArgs& args)
98 {
99 auto result = args.graphics.Clear(BackgroundColor());
100 if (result.Error())
101 {
102 return Result<bool>(ErrorId(result.GetErrorId()));
103 }
104 if (state == State.mouseOver)
105 {
106 Point loc;
107 Rect rect(loc, GetSize());
108 result = args.graphics.FillRectangle(mouseOverBrush, rect);
109 if (result.Error())
110 {
111 return Result<bool>(ErrorId(result.GetErrorId()));
112 }
113 }
114 else if (state == State.clicked)
115 {
116 Point loc;
117 Rect rect(loc, GetSize());
118 result = args.graphics.FillRectangle(mouseClickBrush, rect);
119 if (result.Error())
120 {
121 return Result<bool>(ErrorId(result.GetErrorId()));
122 }
123 }
124 Point loc;
125 Size sz = GetSize();
126 Rect rect(loc, sz);
127 if (sz.w > 0 && sz.h > 0)
128 {
129 PointF imageLoc(imagePadding.left, imagePadding.top);
130 RectF r(imageLoc, SizeF(bitmap->GetWidth() + imagePadding.Horizontal(), bitmap->GetHeight() + imagePadding.Vertical()));
131 RectF s(PointF(0, 0), SizeF(bitmap->GetWidth() + imagePadding.Horizontal(), bitmap->GetHeight() + imagePadding.Vertical()));
132 ImageAttributes attributes;
133 if (attributes.Error())
134 {
135 return Result<bool>(ErrorId(attributes.GetErrorId()));
136 }
137 result = attributes.SetColorKey(System.Windows.Color.DefaultBitmapTransparent(), System.Windows.Color.DefaultBitmapTransparent(),
138 ColorAdjustType.default_);
139 if (result.Error())
140 {
141 return Result<bool>(ErrorId(result.GetErrorId()));
142 }
143 result = args.graphics.DrawImage(*bitmap, r, s, Unit.pixel, attributes);
144 if (result.Error())
145 {
146 return Result<bool>(ErrorId(result.GetErrorId()));
147 }
148 }
149 return Result<bool>(true);
150 }
151 protected override Result<bool> OnMouseEnter(EnterLeaveEventArgs& args)
152 {
153 auto result = base->OnMouseEnter(args);
154 if (result.Error()) return result;
155 result = SetState(State.mouseOver);
156 if (result.Error()) return result;
157 return Result<bool>(true);
158 }
159 protected override Result<bool> OnMouseLeave(EnterLeaveEventArgs& args)
160 {
161 auto result = base->OnMouseLeave(args);
162 if (result.Error()) return result;
163 result = SetState(State.idle);
164 if (result.Error()) return result;
165 return Result<bool>(true);
166 }
167 protected override Result<bool> OnMouseDown(MouseEventArgs& args)
168 {
169 auto result = base->OnMouseDown(args);
170 if (result.Error()) return result;
171 result = SetState(State.clicked);
172 if (result.Error()) return result;
173 return Result<bool>(true);
174 }
175 protected override Result<bool> OnMouseUp(MouseEventArgs& args)
176 {
177 auto result = base->OnMouseUp(args);
178 if (result.Error()) return result;
179 result = SetState(State.mouseOver);
180 if (result.Error()) return result;
181 return Result<bool>(true);
182 }
183 private State state;
184 private Bitmap* bitmap;
185 private SolidBrush mouseOverBrush;
186 private SolidBrush mouseClickBrush;
187 private Padding imagePadding;
188 }