diff options
Diffstat (limited to 'Ada95/src/terminal_interface-curses-mouse.adb')
| -rw-r--r-- | Ada95/src/terminal_interface-curses-mouse.adb | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/Ada95/src/terminal_interface-curses-mouse.adb b/Ada95/src/terminal_interface-curses-mouse.adb new file mode 100644 index 000000000000..9b4032639308 --- /dev/null +++ b/Ada95/src/terminal_interface-curses-mouse.adb @@ -0,0 +1,217 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT ncurses Binding -- +-- -- +-- Terminal_Interface.Curses.Mouse -- +-- -- +-- B O D Y -- +-- -- +------------------------------------------------------------------------------ +-- Copyright (c) 1998-2008,2009 Free Software Foundation, Inc. -- +-- -- +-- Permission is hereby granted, free of charge, to any person obtaining a -- +-- copy of this software and associated documentation files (the -- +-- "Software"), to deal in the Software without restriction, including -- +-- without limitation the rights to use, copy, modify, merge, publish, -- +-- distribute, distribute with modifications, sublicense, and/or sell -- +-- copies of the Software, and to permit persons to whom the Software is -- +-- furnished to do so, subject to the following conditions: -- +-- -- +-- The above copyright notice and this permission notice shall be included -- +-- in all copies or substantial portions of the Software. -- +-- -- +-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -- +-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -- +-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. -- +-- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, -- +-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR -- +-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR -- +-- THE USE OR OTHER DEALINGS IN THE SOFTWARE. -- +-- -- +-- Except as contained in this notice, the name(s) of the above copyright -- +-- holders shall not be used in advertising or otherwise to promote the -- +-- sale, use or other dealings in this Software without prior written -- +-- authorization. -- +------------------------------------------------------------------------------ +-- Author: Juergen Pfeifer, 1996 +-- Version Control: +-- $Revision: 1.24 $ +-- $Date: 2009/12/26 17:38:58 $ +-- Binding Version 01.00 +------------------------------------------------------------------------------ +with Terminal_Interface.Curses.Aux; use Terminal_Interface.Curses.Aux; +with Interfaces.C; use Interfaces.C; +use Interfaces; + +package body Terminal_Interface.Curses.Mouse is + + use type System.Bit_Order; + + function Has_Mouse return Boolean + is + function Mouse_Avail return C_Int; + pragma Import (C, Mouse_Avail, "has_mouse"); + begin + if Has_Key (Key_Mouse) or else Mouse_Avail /= 0 then + return True; + else + return False; + end if; + end Has_Mouse; + + function Get_Mouse return Mouse_Event + is + type Event_Access is access all Mouse_Event; + + function Getmouse (Ev : Event_Access) return C_Int; + pragma Import (C, Getmouse, "getmouse"); + + Event : aliased Mouse_Event; + begin + if Getmouse (Event'Access) = Curses_Err then + raise Curses_Exception; + end if; + return Event; + end Get_Mouse; + + procedure Register_Reportable_Event (Button : Mouse_Button; + State : Button_State; + Mask : in out Event_Mask) + is + Button_Nr : constant Natural := Mouse_Button'Pos (Button); + State_Nr : constant Natural := Button_State'Pos (State); + begin + if Button in Modifier_Keys and then State /= Pressed then + raise Curses_Exception; + else + if Button in Real_Buttons then + Mask := Mask or ((2 ** (6 * Button_Nr)) ** State_Nr); + else + Mask := Mask or (BUTTON_CTRL ** (Button_Nr - 4)); + end if; + end if; + end Register_Reportable_Event; + + procedure Register_Reportable_Events (Button : Mouse_Button; + State : Button_States; + Mask : in out Event_Mask) + is + begin + for S in Button_States'Range loop + if State (S) then + Register_Reportable_Event (Button, S, Mask); + end if; + end loop; + end Register_Reportable_Events; + + function Start_Mouse (Mask : Event_Mask := All_Events) + return Event_Mask + is + function MMask (M : Event_Mask; + O : access Event_Mask) return Event_Mask; + pragma Import (C, MMask, "mousemask"); + R : Event_Mask; + Old : aliased Event_Mask; + begin + R := MMask (Mask, Old'Access); + if R = No_Events then + Beep; + end if; + return Old; + end Start_Mouse; + + procedure End_Mouse (Mask : Event_Mask := No_Events) + is + begin + if Mask /= No_Events then + Beep; + end if; + end End_Mouse; + + procedure Dispatch_Event (Mask : Event_Mask; + Button : out Mouse_Button; + State : out Button_State); + + procedure Dispatch_Event (Mask : Event_Mask; + Button : out Mouse_Button; + State : out Button_State) is + L : Event_Mask; + begin + Button := Alt; -- preset to non real button; + if (Mask and BUTTON1_EVENTS) /= 0 then + Button := Left; + elsif (Mask and BUTTON2_EVENTS) /= 0 then + Button := Middle; + elsif (Mask and BUTTON3_EVENTS) /= 0 then + Button := Right; + elsif (Mask and BUTTON4_EVENTS) /= 0 then + Button := Button4; + end if; + if Button in Real_Buttons then + L := 2 ** (6 * Mouse_Button'Pos (Button)); + for I in Button_State'Range loop + if (Mask and L) /= 0 then + State := I; + exit; + end if; + L := 2 * L; + end loop; + else + State := Pressed; + if (Mask and BUTTON_CTRL) /= 0 then + Button := Control; + elsif (Mask and BUTTON_SHIFT) /= 0 then + Button := Shift; + elsif (Mask and BUTTON_ALT) /= 0 then + Button := Alt; + end if; + end if; + end Dispatch_Event; + + procedure Get_Event (Event : Mouse_Event; + Y : out Line_Position; + X : out Column_Position; + Button : out Mouse_Button; + State : out Button_State) + is + Mask : constant Event_Mask := Event.Bstate; + begin + X := Column_Position (Event.X); + Y := Line_Position (Event.Y); + Dispatch_Event (Mask, Button, State); + end Get_Event; + + procedure Unget_Mouse (Event : Mouse_Event) + is + function Ungetmouse (Ev : Mouse_Event) return C_Int; + pragma Import (C, Ungetmouse, "ungetmouse"); + begin + if Ungetmouse (Event) = Curses_Err then + raise Curses_Exception; + end if; + end Unget_Mouse; + + function Enclosed_In_Window (Win : Window := Standard_Window; + Event : Mouse_Event) return Boolean + is + function Wenclose (Win : Window; Y : C_Int; X : C_Int) + return Curses_Bool; + pragma Import (C, Wenclose, "wenclose"); + begin + if Wenclose (Win, C_Int (Event.Y), C_Int (Event.X)) + = Curses_Bool_False then + return False; + else + return True; + end if; + end Enclosed_In_Window; + + function Mouse_Interval (Msec : Natural := 200) return Natural + is + function Mouseinterval (Msec : C_Int) return C_Int; + pragma Import (C, Mouseinterval, "mouseinterval"); + begin + return Natural (Mouseinterval (C_Int (Msec))); + end Mouse_Interval; + +end Terminal_Interface.Curses.Mouse; |