xref: /haiku/src/tests/servers/app/async_drawing/main.cpp (revision 1e60bdeab63fa7a57bc9a55b032052e95a18bd2c) 
1 #include <stdio.h>
2 
3 #include <Application.h>
4 #include <Region.h>
5 #include <View.h>
6 #include <Window.h>
7 
8 enum {
9 	MSG_REDRAW = 'shhd'
10 };
11 
12 #define TEST_DELAYS 0
13 
14 class View : public BView {
15 public:
16 	View(BRect frame, uint8 r, uint8 g, uint8 b, uint8 a)
17 		: BView(frame, "view", B_FOLLOW_ALL, B_WILL_DRAW)
18 	{
19 		SetDrawingMode(B_OP_ALPHA);
20 		SetHighColor(r, g, b, a);
21 	}
22 
23 	virtual void Draw(BRect updateRect)
24 	{
25 		BRegion region;
26 		GetClippingRegion(&region);
27 		BMessage message(MSG_REDRAW);
28 		int32 count = region.CountRects();
29 		for (int32 i = 0; i < count; i++)
30 			message.AddRect("rect", region.RectAt(i));
31 		be_app->PostMessage(&message);
32 	}
33 
34 	void AsyncRedraw(BRegion& region)
35 	{
36 		if (!LockLooper())
37 			return;
38 
39 #if 0
40 		ConstrainClippingRegion(&region);
41 		FillRect(Bounds());
42 		ConstrainClippingRegion(NULL);
43 #else
44 		PushState();
45 		ConstrainClippingRegion(&region);
46 		FillRect(Bounds());
47 		PopState();
48 #endif
49 
50 		UnlockLooper();
51 	}
52 };
53 
54 
55 class Application : public BApplication {
56 public:
57 	Application()
58 		: BApplication("application/x-vnd.stippi-async.drawing")
59 		, fDelay(true)
60 	{
61 		BWindow* window = new BWindow(BRect(50, 50, 350, 250),
62 			"Test Window", B_TITLED_WINDOW_LOOK, B_NORMAL_WINDOW_FEEL,
63 			B_QUIT_ON_WINDOW_CLOSE);
64 		fView = new View(window->Bounds(), 255, 80, 155, 128);
65 		window->AddChild(fView);
66 		window->Show();
67 
68 		window = new BWindow(BRect(150, 150, 450, 350),
69 			"Drag Window", B_TITLED_WINDOW_LOOK, B_NORMAL_WINDOW_FEEL,
70 			B_QUIT_ON_WINDOW_CLOSE);
71 		window->Show();
72 
73 		SetPulseRate(100000);
74 	}
75 
76 	virtual void Pulse()
77 	{
78 		fDelay = true;
79 	}
80 
81 	virtual void MessageReceived(BMessage* message)
82 	{
83 		switch (message->what) {
84 			case MSG_REDRAW:
85 			{
86 #if TEST_DELAYS
87 				if (fDelay) {
88 					snooze(200000);
89 					fDelay = false;
90 				}
91 #endif
92 				BRegion region;
93 				BRect rect;
94 				for (int32 i = 0;
95 					message->FindRect("rect", i, &rect) == B_OK; i++)
96 					region.Include(rect);
97 				fView->AsyncRedraw(region);
98 				break;
99 			}
100 
101 			default:
102 				BApplication::MessageReceived(message);
103 				break;
104 		}
105 	}
106 private:
107 	View*		fView;
108 	bool		fDelay;
109 };
110 
111 
112 int
113 main(int argc, char* argv[])
114 {
115 	Application app;
116 	app.Run();
117 	return 0;
118 }
119 
120 
121