1 ------------------------------------------------------------------------------
3 -- GNAT ncurses Binding --
5 -- Terminal_Interface.Curses.Mouse --
9 ------------------------------------------------------------------------------
10 -- Copyright (c) 1998-2014,2018 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: 2018/07/07 23:35:05 $
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 function Has_Mouse return Boolean
50 function Mouse_Avail return C_Int;
51 pragma Import (C, Mouse_Avail, "has_mouse");
53 if Has_Key (Key_Mouse) or else Mouse_Avail /= 0 then
60 function Get_Mouse return Mouse_Event
62 type Event_Access is access all Mouse_Event;
64 function Getmouse (Ev : Event_Access) return C_Int;
65 pragma Import (C, Getmouse, "getmouse");
67 Event : aliased Mouse_Event;
69 if Getmouse (Event'Access) = Curses_Err then
70 raise Curses_Exception;
75 procedure Register_Reportable_Event (Button : Mouse_Button;
77 Mask : in out Event_Mask)
79 Button_Nr : constant Natural := Mouse_Button'Pos (Button);
80 State_Nr : constant Natural := Button_State'Pos (State);
82 if Button in Modifier_Keys and then State /= Pressed then
83 raise Curses_Exception;
85 if Button in Real_Buttons then
86 Mask := Mask or ((2 ** (6 * Button_Nr)) ** State_Nr);
88 Mask := Mask or (BUTTON_CTRL ** (Button_Nr - 4));
91 end Register_Reportable_Event;
93 procedure Register_Reportable_Events (Button : Mouse_Button;
94 State : Button_States;
95 Mask : in out Event_Mask)
98 for S in Button_States'Range loop
100 Register_Reportable_Event (Button, S, Mask);
103 end Register_Reportable_Events;
105 function Start_Mouse (Mask : Event_Mask := All_Events)
108 function MMask (M : Event_Mask;
109 O : access Event_Mask) return Event_Mask;
110 pragma Import (C, MMask, "mousemask");
112 Old : aliased Event_Mask;
114 R := MMask (Mask, Old'Access);
115 if R = No_Events then
121 procedure End_Mouse (Mask : Event_Mask := No_Events)
124 if Mask /= No_Events then
129 procedure Dispatch_Event (Mask : Event_Mask;
130 Button : out Mouse_Button;
131 State : out Button_State);
133 procedure Dispatch_Event (Mask : Event_Mask;
134 Button : out Mouse_Button;
135 State : out Button_State) is
138 Button := Alt; -- preset to non real button;
139 if (Mask and BUTTON1_EVENTS) /= 0 then
141 elsif (Mask and BUTTON2_EVENTS) /= 0 then
143 elsif (Mask and BUTTON3_EVENTS) /= 0 then
145 elsif (Mask and BUTTON4_EVENTS) /= 0 then
148 if Button in Real_Buttons then
149 L := 2 ** (6 * Mouse_Button'Pos (Button));
150 for I in Button_State'Range loop
151 if (Mask and L) /= 0 then
159 if (Mask and BUTTON_CTRL) /= 0 then
161 elsif (Mask and BUTTON_SHIFT) /= 0 then
163 elsif (Mask and BUTTON_ALT) /= 0 then
169 procedure Get_Event (Event : Mouse_Event;
170 Y : out Line_Position;
171 X : out Column_Position;
172 Button : out Mouse_Button;
173 State : out Button_State)
175 Mask : constant Event_Mask := Event.Bstate;
177 X := Column_Position (Event.X);
178 Y := Line_Position (Event.Y);
179 Dispatch_Event (Mask, Button, State);
182 procedure Unget_Mouse (Event : Mouse_Event)
184 function Ungetmouse (Ev : Mouse_Event) return C_Int;
185 pragma Import (C, Ungetmouse, "ungetmouse");
187 if Ungetmouse (Event) = Curses_Err then
188 raise Curses_Exception;
192 function Enclosed_In_Window (Win : Window := Standard_Window;
193 Event : Mouse_Event) return Boolean
195 function Wenclose (Win : Window; Y : C_Int; X : C_Int)
197 pragma Import (C, Wenclose, "wenclose");
199 if Wenclose (Win, C_Int (Event.Y), C_Int (Event.X))
206 end Enclosed_In_Window;
208 function Mouse_Interval (Msec : Natural := 200) return Natural
210 function Mouseinterval (Msec : C_Int) return C_Int;
211 pragma Import (C, Mouseinterval, "mouseinterval");
213 return Natural (Mouseinterval (C_Int (Msec)));
216 end Terminal_Interface.Curses.Mouse;