1 // main.cpp
2
3 #include <stdio.h>
4 #include <stdlib.h>
5
6 #include <Application.h>
7 #include <Message.h>
8 #include <Button.h>
9 #include <View.h>
10 #include <Window.h>
11
12 enum {
13 TRACKING_NONE = 0,
14 TRACKING_ALL,
15 TRACKING_RIGHT,
16 TRACKING_BOTTOM,
17 TRACKING_RIGHT_BOTTOM,
18 };
19
20 class TestView : public BView {
21
22 public:
TestView(BRect frame,const char * name,uint32 resizeFlags,uint32 flags)23 TestView(BRect frame, const char* name,
24 uint32 resizeFlags, uint32 flags)
25 : BView(frame, name, resizeFlags, flags),
26 fTracking(TRACKING_NONE),
27 fLastMousePos(0.0, 0.0)
28 {
29 rgb_color color;
30 color.red = rand() / 256;
31 color.green = rand() / 256;
32 color.blue = rand() / 256;
33 color.alpha = 255;
34 SetViewColor(color);
35 SetLowColor(color);
36 }
37
38 virtual void Draw(BRect updateRect);
39
40 virtual void MouseDown(BPoint where);
41 virtual void MouseUp(BPoint where);
42 virtual void MouseMoved(BPoint where, uint32 transit,
43 const BMessage* dragMessage);
44
45 private:
46 uint32 fTracking;
47
48 BPoint fLastMousePos;
49 };
50
51 // Draw
52 void
Draw(BRect updateRect)53 TestView::Draw(BRect updateRect)
54 {
55 // text
56 SetHighColor(0, 0, 0, 255);
57 const char* message = "Click and drag to move this view!";
58 DrawString(message, BPoint(20.0, 30.0));
59
60 BRect r(Bounds());
61 r.right -= 15.0;
62 r.bottom -= 15.0;
63 StrokeLine(r.RightTop(), BPoint(r.right, Bounds().bottom));
64 StrokeLine(r.LeftBottom(), BPoint(Bounds().right, r.bottom));
65 }
66
67 // MouseDown
68 void
MouseDown(BPoint where)69 TestView::MouseDown(BPoint where)
70 {
71 BRect r(Bounds());
72 r.right -= 15.0;
73 r.bottom -= 15.0;
74 if (r.Contains(where))
75 fTracking = TRACKING_ALL;
76 else if (r.bottom < where.y && r.right < where.x)
77 fTracking = TRACKING_RIGHT_BOTTOM;
78 else if (r.bottom < where.y)
79 fTracking = TRACKING_BOTTOM;
80 else if (r.right < where.x)
81 fTracking = TRACKING_RIGHT;
82
83 fLastMousePos = where;
84 SetMouseEventMask(B_POINTER_EVENTS, B_LOCK_WINDOW_FOCUS);
85 }
86
87 // MouseUp
88 void
MouseUp(BPoint where)89 TestView::MouseUp(BPoint where)
90 {
91 fTracking = TRACKING_NONE;
92 }
93
94 // MouseMoved
95 void
MouseMoved(BPoint where,uint32 transit,const BMessage * dragMessage)96 TestView::MouseMoved(BPoint where, uint32 transit,
97 const BMessage* dragMessage)
98 {
99 BPoint offset = where - fLastMousePos;
100 switch (fTracking) {
101 case TRACKING_ALL:
102 MoveBy(offset.x, offset.y);
103 // fLastMousePos stays fixed
104 break;
105 case TRACKING_RIGHT:
106 ResizeBy(offset.x, 0.0);
107 fLastMousePos = where;
108 break;
109 case TRACKING_BOTTOM:
110 ResizeBy(0.0, offset.y);
111 fLastMousePos = where;
112 break;
113 case TRACKING_RIGHT_BOTTOM:
114 ResizeBy(offset.x, offset.y);
115 fLastMousePos = where;
116 break;
117 }
118 }
119
120
121
122 // show_window
123 void
show_window(BRect frame,const char * name)124 show_window(BRect frame, const char* name)
125 {
126 BWindow* window = new BWindow(frame, name,
127 B_TITLED_WINDOW,
128 B_ASYNCHRONOUS_CONTROLS | B_QUIT_ON_WINDOW_CLOSE);
129
130 BView* view = new TestView(window->Bounds(), "test 1", B_FOLLOW_ALL,
131 B_WILL_DRAW | B_FULL_UPDATE_ON_RESIZE);
132
133 window->AddChild(view);
134
135 BRect bounds = view->Bounds();
136 bounds.InsetBy(20, 20);
137 BView* view1 = new TestView(bounds, "test 2", B_FOLLOW_RIGHT | B_FOLLOW_BOTTOM,
138 B_WILL_DRAW | B_FULL_UPDATE_ON_RESIZE);
139 view->AddChild(view1);
140
141 bounds = view1->Bounds();
142 bounds.InsetBy(20, 20);
143 BView* view2 = new TestView(bounds, "test 3", B_FOLLOW_NONE,
144 B_WILL_DRAW | B_FULL_UPDATE_ON_RESIZE);
145 view1->AddChild(view2);
146
147
148 window->Show();
149 }
150
151 // main
152 int
main(int argc,char ** argv)153 main(int argc, char** argv)
154 {
155 BApplication* app = new BApplication("application/x.vnd-Haiku.Following");
156
157 BRect frame(50.0, 50.0, 300.0, 250.0);
158 show_window(frame, "Following Test");
159
160 app->Run();
161
162 delete app;
163 return 0;
164 }
165