1 ------------------------------------------------------------------------------
3 -- GNAT ncurses Binding --
5 -- Terminal_Interface.Curses.Mouse --
9 ------------------------------------------------------------------------------
10 -- Copyright (c) 1998-2008,2009 Free Software Foundation, Inc. --
12 -- Permission is hereby granted, free of charge, to any person obtaining a --
13 -- copy of this software and associated documentation files (the --
14 -- "Software"), to deal in the Software without restriction, including --
15 -- without limitation the rights to use, copy, modify, merge, publish, --
16 -- distribute, distribute with modifications, sublicense, and/or sell --
17 -- copies of the Software, and to permit persons to whom the Software is --
18 -- furnished to do so, subject to the following conditions: --
20 -- The above copyright notice and this permission notice shall be included --
21 -- in all copies or substantial portions of the Software. --
23 -- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS --
24 -- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF --
25 -- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. --
26 -- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, --
27 -- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR --
28 -- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR --
29 -- THE USE OR OTHER DEALINGS IN THE SOFTWARE. --
31 -- Except as contained in this notice, the name(s) of the above copyright --
32 -- holders shall not be used in advertising or otherwise to promote the --
33 -- sale, use or other dealings in this Software without prior written --
35 ------------------------------------------------------------------------------
36 -- Author: Juergen Pfeifer, 1996
39 -- $Date: 2009/12/26 17:38:58 $
40 -- Binding Version 01.00
41 ------------------------------------------------------------------------------
42 with Terminal_Interface.Curses.Aux; use Terminal_Interface.Curses.Aux;
43 with Interfaces.C; use Interfaces.C;
46 package body Terminal_Interface.Curses.Mouse is
48 use type System.Bit_Order;
50 function Has_Mouse return Boolean
52 function Mouse_Avail return C_Int;
53 pragma Import (C, Mouse_Avail, "has_mouse");
55 if Has_Key (Key_Mouse) or else Mouse_Avail /= 0 then
62 function Get_Mouse return Mouse_Event
64 type Event_Access is access all Mouse_Event;
66 function Getmouse (Ev : Event_Access) return C_Int;
67 pragma Import (C, Getmouse, "getmouse");
69 Event : aliased Mouse_Event;
71 if Getmouse (Event'Access) = Curses_Err then
72 raise Curses_Exception;
77 procedure Register_Reportable_Event (Button : Mouse_Button;
79 Mask : in out Event_Mask)
81 Button_Nr : constant Natural := Mouse_Button'Pos (Button);
82 State_Nr : constant Natural := Button_State'Pos (State);
84 if Button in Modifier_Keys and then State /= Pressed then
85 raise Curses_Exception;
87 if Button in Real_Buttons then
88 Mask := Mask or ((2 ** (6 * Button_Nr)) ** State_Nr);
90 Mask := Mask or (BUTTON_CTRL ** (Button_Nr - 4));
93 end Register_Reportable_Event;
95 procedure Register_Reportable_Events (Button : Mouse_Button;
96 State : Button_States;
97 Mask : in out Event_Mask)
100 for S in Button_States'Range loop
102 Register_Reportable_Event (Button, S, Mask);
105 end Register_Reportable_Events;
107 function Start_Mouse (Mask : Event_Mask := All_Events)
110 function MMask (M : Event_Mask;
111 O : access Event_Mask) return Event_Mask;
112 pragma Import (C, MMask, "mousemask");
114 Old : aliased Event_Mask;
116 R := MMask (Mask, Old'Access);
117 if R = No_Events then
123 procedure End_Mouse (Mask : Event_Mask := No_Events)
126 if Mask /= No_Events then
131 procedure Dispatch_Event (Mask : Event_Mask;
132 Button : out Mouse_Button;
133 State : out Button_State);
135 procedure Dispatch_Event (Mask : Event_Mask;
136 Button : out Mouse_Button;
137 State : out Button_State) is
140 Button := Alt; -- preset to non real button;
141 if (Mask and BUTTON1_EVENTS) /= 0 then
143 elsif (Mask and BUTTON2_EVENTS) /= 0 then
145 elsif (Mask and BUTTON3_EVENTS) /= 0 then
147 elsif (Mask and BUTTON4_EVENTS) /= 0 then
150 if Button in Real_Buttons then
151 L := 2 ** (6 * Mouse_Button'Pos (Button));
152 for I in Button_State'Range loop
153 if (Mask and L) /= 0 then
161 if (Mask and BUTTON_CTRL) /= 0 then
163 elsif (Mask and BUTTON_SHIFT) /= 0 then
165 elsif (Mask and BUTTON_ALT) /= 0 then
171 procedure Get_Event (Event : Mouse_Event;
172 Y : out Line_Position;
173 X : out Column_Position;
174 Button : out Mouse_Button;
175 State : out Button_State)
177 Mask : constant Event_Mask := Event.Bstate;
179 X := Column_Position (Event.X);
180 Y := Line_Position (Event.Y);
181 Dispatch_Event (Mask, Button, State);
184 procedure Unget_Mouse (Event : Mouse_Event)
186 function Ungetmouse (Ev : Mouse_Event) return C_Int;
187 pragma Import (C, Ungetmouse, "ungetmouse");
189 if Ungetmouse (Event) = Curses_Err then
190 raise Curses_Exception;
194 function Enclosed_In_Window (Win : Window := Standard_Window;
195 Event : Mouse_Event) return Boolean
197 function Wenclose (Win : Window; Y : C_Int; X : C_Int)
199 pragma Import (C, Wenclose, "wenclose");
201 if Wenclose (Win, C_Int (Event.Y), C_Int (Event.X))
202 = Curses_Bool_False then
207 end Enclosed_In_Window;
209 function Mouse_Interval (Msec : Natural := 200) return Natural
211 function Mouseinterval (Msec : C_Int) return C_Int;
212 pragma Import (C, Mouseinterval, "mouseinterval");
214 return Natural (Mouseinterval (C_Int (Msec)));
217 end Terminal_Interface.Curses.Mouse;