diff options
author | tobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c> | 2008-06-08 15:33:48 +0000 |
---|---|---|
committer | tobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c> | 2008-06-08 15:33:48 +0000 |
commit | 46bb010ca7c5eb04551c030105f9999ca80e472f (patch) | |
tree | 3cb6a6bdd7e4e62623c6a83b5d22c1c0dfad73e8 /Game/Code/lib/JEDI-SDL/SDL/Pas/sdlinput.pas | |
parent | f4425b4558b7fd86de874035f81ea290c987e96d (diff) | |
download | usdx-46bb010ca7c5eb04551c030105f9999ca80e472f.tar.gz usdx-46bb010ca7c5eb04551c030105f9999ca80e472f.tar.xz usdx-46bb010ca7c5eb04551c030105f9999ca80e472f.zip |
- set svn:eol-style to native
- removed some svn:executable properties from non-executable files
git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@1144 b956fd51-792f-4845-bead-9b4dfca2ff2c
Diffstat (limited to 'Game/Code/lib/JEDI-SDL/SDL/Pas/sdlinput.pas')
-rw-r--r-- | Game/Code/lib/JEDI-SDL/SDL/Pas/sdlinput.pas | 1846 |
1 files changed, 923 insertions, 923 deletions
diff --git a/Game/Code/lib/JEDI-SDL/SDL/Pas/sdlinput.pas b/Game/Code/lib/JEDI-SDL/SDL/Pas/sdlinput.pas index e1b2347e..094f4e0f 100644 --- a/Game/Code/lib/JEDI-SDL/SDL/Pas/sdlinput.pas +++ b/Game/Code/lib/JEDI-SDL/SDL/Pas/sdlinput.pas @@ -1,923 +1,923 @@ -unit sdlinput;
-{
- $Id: sdlinput.pas,v 1.9 2007/08/22 21:18:43 savage Exp $
-
-}
-{******************************************************************************}
-{ }
-{ JEDI-SDL : Pascal units for SDL - Simple DirectMedia Layer }
-{ SDL Input Wrapper }
-{ }
-{ }
-{ The initial developer of this Pascal code was : }
-{ Dominique Louis <Dominique@SavageSoftware.com.au> }
-{ }
-{ Portions created by Dominique Louis are }
-{ Copyright (C) 2003 - 2100 Dominique Louis. }
-{ }
-{ }
-{ Contributor(s) }
-{ -------------- }
-{ Dominique Louis <Dominique@SavageSoftware.com.au> }
-{ }
-{ Obtained through: }
-{ Joint Endeavour of Delphi Innovators ( Project JEDI ) }
-{ }
-{ You may retrieve the latest version of this file at the Project }
-{ JEDI home page, located at http://delphi-jedi.org }
-{ }
-{ The contents of this file are used with permission, subject to }
-{ the Mozilla Public License Version 1.1 (the "License"); you may }
-{ not use this file except in compliance with the License. You may }
-{ obtain a copy of the License at }
-{ http://www.mozilla.org/MPL/MPL-1.1.html }
-{ }
-{ Software distributed under the License is distributed on an }
-{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or }
-{ implied. See the License for the specific language governing }
-{ rights and limitations under the License. }
-{ }
-{ Description }
-{ ----------- }
-{ SDL Mouse, Keyboard and Joystick wrapper }
-{ }
-{ }
-{ Requires }
-{ -------- }
-{ SDL.dll on Windows platforms }
-{ libSDL-1.1.so.0 on Linux platform }
-{ }
-{ Programming Notes }
-{ ----------------- }
-{ }
-{ }
-{ }
-{ }
-{ Revision History }
-{ ---------------- }
-{ March 12 2003 - DL : Initial creation }
-{ }
-{ February 02 2004 - DL : Added Custom Cursor Support to the Mouse class }
-{
- $Log: sdlinput.pas,v $
- Revision 1.9 2007/08/22 21:18:43 savage
- Thanks to Dean for his MouseDelta patch.
-
- Revision 1.8 2005/08/03 18:57:32 savage
- Various updates and additions. Mainly to handle OpenGL 3D Window support and better cursor support for the mouse class
-
- Revision 1.7 2004/09/30 22:32:04 savage
- Updated with slightly different header comments
-
- Revision 1.6 2004/09/12 21:52:58 savage
- Slight changes to fix some issues with the sdl classes.
-
- Revision 1.5 2004/05/10 21:11:49 savage
- changes required to help get SoAoS off the ground.
-
- Revision 1.4 2004/05/03 22:38:40 savage
- Added the ability to enable or disable certain inputs @ runtime. Basically it just does not call UpdateInput if Enabled = false.
- Can also disable and enable input devices via the InputManager.
-
- Revision 1.3 2004/04/28 21:27:01 savage
- Updated Joystick code and event handlers. Needs testing...
-
- Revision 1.2 2004/02/14 22:36:29 savage
- Fixed inconsistencies of using LoadLibrary and LoadModule.
- Now all units make use of LoadModule rather than LoadLibrary and other dynamic proc procedures.
-
- Revision 1.1 2004/02/05 00:08:20 savage
- Module 1.0 release
-
-
-}
-{******************************************************************************}
-
-interface
-
-{$i jedi-sdl.inc}
-
-uses
- Classes,
- sdl;
-
-type
- TSDLInputType = ( itJoystick , itKeyBoard, itMouse );
- TSDLInputTypes = set of TSDLInputType;
-
- TSDLCustomInput = class( TObject )
- private
- FEnabled: Boolean;
- public
- constructor Create;
- function UpdateInput( event: TSDL_EVENT ) : Boolean; virtual; abstract;
- property Enabled : Boolean read FEnabled write FEnabled;
- end;
-
- TSDLJoyAxisMoveEvent = procedure ( Which: UInt8; Axis: UInt8; Value: SInt16 ) {$IFNDEF NOT_OO}of object{$ENDIF};
- TSDLJoyBallMoveEvent = procedure ( Which: UInt8; Ball: UInt8; RelativePos: TPoint ) {$IFNDEF NOT_OO}of object{$ENDIF};
- TSDLJoyHatMoveEvent = procedure ( Which: UInt8; Hat: UInt8; Value: SInt16 ) {$IFNDEF NOT_OO}of object{$ENDIF};
- TSDLJoyButtonEvent = procedure ( Which: UInt8; Button: UInt8; State: SInt16 ) {$IFNDEF NOT_OO}of object{$ENDIF};
-
-
- TSDLJoyStick = class( TSDLCustomInput )
- private
- FJoystick : PSDL_Joystick;
- FJoystickIndex : Integer;
- FJoyAxisMoveEvent : TSDLJoyAxisMoveEvent;
- FJoyBallMoveEvent : TSDLJoyBallMoveEvent;
- FJoyHatMoveEvent : TSDLJoyHatMoveEvent;
- FJoyButtonDownEvent : TSDLJoyButtonEvent;
- FJoyButtonUpEvent : TSDLJoyButtonEvent;
- procedure DoAxisMove( Event : TSDL_Event );
- procedure DoBallMove( Event : TSDL_Event );
- procedure DoHatMove( Event : TSDL_Event );
- procedure DoButtonDown( Event : TSDL_Event );
- procedure DoButtonUp( Event : TSDL_Event );
- function GetName: PChar;
- function GetNumAxes: integer;
- function GetNumBalls: integer;
- function GetNumButtons: integer;
- function GetNumHats: integer;
- public
- constructor Create( Index : Integer );
- destructor Destroy; override;
- procedure Open;
- procedure Close;
- function UpdateInput( Event: TSDL_EVENT ) : Boolean; override;
- property Name : PChar read GetName;
- property NumAxes : integer read GetNumAxes;
- property NumBalls : integer read GetNumBalls;
- property NumButtons : integer read GetNumButtons;
- property NumHats : integer read GetNumHats;
- property OnAxisMove : TSDLJoyAxisMoveEvent read FJoyAxisMoveEvent write FJoyAxisMoveEvent;
- property OnBallMove : TSDLJoyBallMoveEvent read FJoyBallMoveEvent write FJoyBallMoveEvent;
- property OnHatMove : TSDLJoyHatMoveEvent read FJoyHatMoveEvent write FJoyHatMoveEvent;
- property OnButtonDown : TSDLJoyButtonEvent read FJoyButtonDownEvent write FJoyButtonDownEvent;
- property OnButtonUp : TSDLJoyButtonEvent read FJoyButtonUpEvent write FJoyButtonUpEvent;
- end;
-
- TSDLJoySticks = class( TObject )
- private
- FNumOfJoySticks: Integer;
- FJoyStickList : TList;
- function GetJoyStick(Index: integer): TSDLJoyStick;
- procedure SetJoyStick(Index: integer; const Value: TSDLJoyStick);
- public
- constructor Create;
- destructor Destroy; override;
- function UpdateInput( event: TSDL_EVENT ) : Boolean;
- property NumOfJoySticks : Integer read FNumOfJoySticks write FNumOfJoySticks;
- property JoySticks[ Index : integer ] : TSDLJoyStick read GetJoyStick write SetJoyStick;
- end;
-
- TSDLKeyBoardEvent = procedure ( var Key: TSDLKey; Shift: TSDLMod; unicode : UInt16 ) {$IFNDEF NOT_OO}of object{$ENDIF};
-
- TSDLKeyBoard = class( TSDLCustomInput )
- private
- FKeys : PKeyStateArr;
- FOnKeyUp: TSDLKeyBoardEvent;
- FOnKeyDown: TSDLKeyBoardEvent;
- procedure DoKeyDown( keysym : PSDL_keysym );
- procedure DoKeyUp( keysym : PSDL_keysym );
- public
- function IsKeyDown( Key : TSDLKey ) : Boolean;
- function IsKeyUp( Key : TSDLKey ) : Boolean;
- function UpdateInput( event: TSDL_EVENT ) : Boolean; override;
- property Keys : PKeyStateArr read FKeys write FKeys;
- property OnKeyDown : TSDLKeyBoardEvent read FOnKeyDown write FOnKeyDown;
- property OnKeyUp : TSDLKeyBoardEvent read FOnKeyUp write FOnKeyUp;
- end;
-
- TSDLMouseButtonEvent = procedure ( Button : Integer; Shift: TSDLMod; MousePos : TPoint ) {$IFNDEF NOT_OO}of object{$ENDIF};
- TSDLMouseMoveEvent = procedure ( Shift: TSDLMod; CurrentPos : TPoint; RelativePos : TPoint ) {$IFNDEF NOT_OO}of object{$ENDIF};
- TSDLMouseWheelEvent = procedure ( WheelDelta : Integer; Shift: TSDLMod; MousePos : TPoint ) {$IFNDEF NOT_OO}of object{$ENDIF};
-
- TSDLCustomCursor = class( TObject )
- private
- FFileName : string;
- FHotPoint: TPoint;
- procedure SetFileName(const aValue: string );
- function ScanForChar( str : string; ch : Char; startPos : Integer; lookFor : Boolean ) : Integer;
- public
- constructor Create( const aFileName : string; aHotPoint: TPoint );
- procedure LoadFromFile( const aFileName : string ); virtual; abstract;
- procedure LoadFromStream( aStream : TStream ); virtual; abstract;
- procedure Show; virtual; abstract;
- property FileName : string read FFileName write SetFileName;
- property HotPoint : TPoint read FHotPoint write FHotPoint;
- end;
-
- TSDLXPMCursor = class( TSDLCustomCursor )
- private
- FCursor : PSDL_Cursor;
- procedure FreeCursor;
- public
- destructor Destroy; override;
- procedure LoadFromFile( const aFileName : string ); override;
- procedure LoadFromStream( aStream : TStream ); override;
- procedure Show; override;
- end;
-
- TSDLCursorList = class( TStringList )
- protected
- function GetObject( aIndex : Integer ): TSDLCustomCursor; reintroduce;
- procedure PutObject( aIndex : Integer; AObject : TSDLCustomCursor); reintroduce;
- public
- constructor Create;
- function AddCursor(const aName : string; aObject : TSDLCustomCursor): Integer; virtual;
- end;
-
- TSDLMouse = class( TSDLCustomInput )
- private
- FDragging : Boolean;
- FMousePos : TPoint;
- FOnMouseUp: TSDLMouseButtonEvent;
- FOnMouseDown: TSDLMouseButtonEvent;
- FOnMouseMove: TSDLMouseMoveEvent;
- FOnMouseWheel: TSDLMouseWheelEvent;
- FCursorList : TSDLCursorList; // Cursor Pointer
- procedure DoMouseMove( Event: TSDL_Event );
- procedure DoMouseDown( Event: TSDL_Event );
- procedure DoMouseUp( Event: TSDL_Event );
- procedure DoMouseWheelScroll( Event: TSDL_Event );
- function GetMousePosition: TPoint;
- procedure SetMousePosition(const Value: TPoint);
- function GetMouseDelta: TPoint;
- public
- destructor Destroy; override;
- function UpdateInput( event: TSDL_EVENT ) : Boolean; override;
- function MouseIsDown( Button : Integer ) : Boolean;
- function MouseIsUp( Button : Integer ) : Boolean;
- procedure ShowCursor;
- procedure HideCursor;
- property OnMouseDown : TSDLMouseButtonEvent read FOnMouseDown write FOnMouseDown;
- property OnMouseUp : TSDLMouseButtonEvent read FOnMouseUp write FOnMouseUp;
- property OnMouseMove : TSDLMouseMoveEvent read FOnMouseMove write FOnMouseMove;
- property OnMouseWheel : TSDLMouseWheelEvent read FOnMouseWheel write FOnMouseWheel;
- property MousePosition : TPoint read GetMousePosition write SetMousePosition;
- property MouseDelta: TPoint read GetMouseDelta;
- property Cursors : TSDLCursorList read FCursorList write FCursorList;
- end;
-
- TSDLInputManager = class( TObject )
- private
- FKeyBoard : TSDLKeyBoard;
- FMouse : TSDLMouse;
- FJoystick : TSDLJoysticks;
- public
- constructor Create( InitInputs : TSDLInputTypes );
- destructor Destroy; override;
- procedure Disable( InitInputs : TSDLInputTypes; JoyStickNumber : Integer = 0 );
- procedure Enable( InitInputs : TSDLInputTypes; JoyStickNumber : Integer = 0 );
- function UpdateInputs( event: TSDL_EVENT ) : Boolean;
- property KeyBoard : TSDLKeyBoard read FKeyBoard write FKeyBoard;
- property Mouse : TSDLMouse read FMouse write FMouse;
- property JoyStick : TSDLJoysticks read FJoyStick write FJoyStick;
- end;
-
-implementation
-
-uses
- SysUtils;
-
-{ TSDLCustomInput }
-constructor TSDLCustomInput.Create;
-begin
- inherited;
- FEnabled := true;
-end;
-
-{ TSDLJoysticks }
-constructor TSDLJoysticks.Create;
-var
- i : integer;
-begin
- inherited;
- if ( SDL_WasInit( SDL_INIT_JOYSTICK ) = 0 ) then
- SDL_InitSubSystem( SDL_INIT_JOYSTICK );
- FNumOfJoySticks := SDL_NumJoysticks;
- FJoyStickList := TList.Create;
- for i := 0 to FNumOfJoySticks - 1 do
- begin
- FJoyStickList.Add( TSDLJoyStick.Create( i ) );
- end;
-end;
-
-destructor TSDLJoysticks.Destroy;
-var
- i : integer;
-begin
- if FJoyStickList.Count > 0 then
- begin
- for i := 0 to FJoyStickList.Count - 1 do
- begin
- TSDLJoyStick( FJoyStickList.Items[i] ).Free;
- end;
- end;
- SDL_QuitSubSystem( SDL_INIT_JOYSTICK );
- inherited;
-end;
-
-function TSDLJoySticks.GetJoyStick(Index: integer): TSDLJoyStick;
-begin
- Result := TSDLJoyStick( FJoyStickList[ Index ] );
-end;
-
-procedure TSDLJoySticks.SetJoyStick(Index: integer;
- const Value: TSDLJoyStick);
-begin
- FJoyStickList[ Index ] := @Value;
-end;
-
-function TSDLJoysticks.UpdateInput(event: TSDL_EVENT): Boolean;
-var
- i : integer;
-begin
- result := false;
- if FJoyStickList.Count > 0 then
- begin
- for i := 0 to FJoyStickList.Count - 1 do
- begin
- TSDLJoyStick( FJoyStickList.Items[i] ).UpdateInput( event );
- end;
- end;
-end;
-
-{ TSDLKeyBoard }
-procedure TSDLKeyBoard.DoKeyDown(keysym: PSDL_keysym);
-begin
- if Assigned( FOnKeyDown ) then
- FOnKeyDown( keysym.sym , keysym.modifier, keysym.unicode );
-end;
-
-procedure TSDLKeyBoard.DoKeyUp(keysym: PSDL_keysym);
-begin
- if Assigned( FOnKeyUp ) then
- FOnKeyUp( keysym.sym , keysym.modifier, keysym.unicode );
-end;
-
-function TSDLKeyBoard.IsKeyDown( Key: TSDLKey ): Boolean;
-begin
- SDL_PumpEvents;
-
- // Populate Keys array
- FKeys := PKeyStateArr( SDL_GetKeyState( nil ) );
- Result := ( FKeys[Key] = SDL_PRESSED );
-end;
-
-function TSDLKeyBoard.IsKeyUp( Key: TSDLKey ): Boolean;
-begin
- SDL_PumpEvents;
-
- // Populate Keys array
- FKeys := PKeyStateArr( SDL_GetKeyState( nil ) );
- Result := ( FKeys[Key] = SDL_RELEASED );
-end;
-
-function TSDLKeyBoard.UpdateInput(event: TSDL_EVENT): Boolean;
-begin
- result := false;
- if ( FEnabled ) then
- begin
- case event.type_ of
- SDL_KEYDOWN :
- begin
- // handle key presses
- DoKeyDown( @event.key.keysym );
- result := true;
- end;
-
- SDL_KEYUP :
- begin
- // handle key releases
- DoKeyUp( @event.key.keysym );
- result := true;
- end;
- end;
- end;
-end;
-
-{ TSDLMouse }
-destructor TSDLMouse.Destroy;
-begin
-
- inherited;
-end;
-
-procedure TSDLMouse.DoMouseDown( Event: TSDL_Event );
-var
- CurrentPos : TPoint;
-begin
- FDragging := true;
- if Assigned( FOnMouseDown ) then
- begin
- CurrentPos.x := event.button.x;
- CurrentPos.y := event.button.y;
- FOnMouseDown( event.button.button, SDL_GetModState, CurrentPos );
- end;
-end;
-
-procedure TSDLMouse.DoMouseMove( Event: TSDL_Event );
-var
- CurrentPos, RelativePos : TPoint;
-begin
- if Assigned( FOnMouseMove ) then
- begin
- CurrentPos.x := event.motion.x;
- CurrentPos.y := event.motion.y;
- RelativePos.x := event.motion.xrel;
- RelativePos.y := event.motion.yrel;
- FOnMouseMove( SDL_GetModState, CurrentPos, RelativePos );
- end;
-end;
-
-procedure TSDLMouse.DoMouseUp( event: TSDL_EVENT );
-var
- Point : TPoint;
-begin
- FDragging := false;
- if Assigned( FOnMouseUp ) then
- begin
- Point.x := event.button.x;
- Point.y := event.button.y;
- FOnMouseUp( event.button.button, SDL_GetModState, Point );
- end;
-end;
-
-procedure TSDLMouse.DoMouseWheelScroll( event: TSDL_EVENT );
-var
- Point : TPoint;
-begin
- if Assigned( FOnMouseWheel ) then
- begin
- Point.x := event.button.x;
- Point.y := event.button.y;
- if ( event.button.button = SDL_BUTTON_WHEELUP ) then
- FOnMouseWheel( SDL_BUTTON_WHEELUP, SDL_GetModState, Point )
- else
- FOnMouseWheel( SDL_BUTTON_WHEELDOWN, SDL_GetModState, Point );
- end;
-end;
-
-function TSDLMouse.GetMouseDelta: TPoint;
-begin
- SDL_PumpEvents;
-
- SDL_GetRelativeMouseState( Result.X, Result.Y );
-end;
-
-function TSDLMouse.GetMousePosition: TPoint;
-begin
- SDL_PumpEvents;
-
- SDL_GetMouseState( FMousePos.X, FMousePos.Y );
- Result := FMousePos;
-end;
-
-procedure TSDLMouse.HideCursor;
-begin
- SDL_ShowCursor( SDL_DISABLE );
-end;
-
-function TSDLMouse.MouseIsDown(Button: Integer): Boolean;
-begin
- SDL_PumpEvents;
-
- Result := ( SDL_GetMouseState( FMousePos.X, FMousePos.Y ) and SDL_BUTTON( Button ) = 0 );
-end;
-
-function TSDLMouse.MouseIsUp(Button: Integer): Boolean;
-begin
- SDL_PumpEvents;
-
- Result := not ( SDL_GetMouseState( FMousePos.X, FMousePos.Y ) and SDL_BUTTON( Button ) = 0 );
-end;
-
-procedure TSDLMouse.SetMousePosition(const Value: TPoint);
-begin
- SDL_WarpMouse( Value.x, Value.y );
-end;
-
-procedure TSDLMouse.ShowCursor;
-begin
- SDL_ShowCursor( SDL_ENABLE );
-end;
-
-function TSDLMouse.UpdateInput(event: TSDL_EVENT): Boolean;
-begin
- result := false;
- if ( FEnabled ) then
- begin
- case event.type_ of
- SDL_MOUSEMOTION :
- begin
- // handle Mouse Move
- DoMouseMove( event );
- end;
-
- SDL_MOUSEBUTTONDOWN :
- begin
- // handle Mouse Down
- if ( event.button.button = SDL_BUTTON_WHEELUP )
- or ( event.button.button = SDL_BUTTON_WHEELDOWN ) then
- DoMouseWheelScroll( event )
- else
- DoMouseDown( event );
- end;
-
- SDL_MOUSEBUTTONUP :
- begin
- // handle Mouse Up
- if ( event.button.button = SDL_BUTTON_WHEELUP )
- or ( event.button.button = SDL_BUTTON_WHEELDOWN ) then
- DoMouseWheelScroll( event )
- else
- DoMouseUp( event );
- end;
- end;
- end;
-end;
-
-{ TSDLInputManager }
-constructor TSDLInputManager.Create(InitInputs: TSDLInputTypes);
-begin
- inherited Create;
- if itJoystick in InitInputs then
- FJoystick := TSDLJoysticks.Create;
-
- if itKeyBoard in InitInputs then
- FKeyBoard := TSDLKeyBoard.Create;
-
- if itMouse in InitInputs then
- FMouse := TSDLMouse.Create;
-end;
-
-destructor TSDLInputManager.Destroy;
-begin
- if FJoystick <> nil then
- FreeAndNil( FJoystick );
- if FKeyBoard <> nil then
- FreeAndNil( FKeyBoard );
- if FMouse <> nil then
- FreeAndNil( FMouse );
- inherited;
-end;
-
-procedure TSDLInputManager.Disable( InitInputs : TSDLInputTypes; JoyStickNumber : Integer );
-begin
- if itJoystick in InitInputs then
- FJoystick.JoySticks[ JoyStickNumber ].Enabled := false;
-
- if itKeyBoard in InitInputs then
- FKeyBoard.Enabled := false;
-
- if itMouse in InitInputs then
- FMouse.Enabled := false;
-end;
-
-procedure TSDLInputManager.Enable( InitInputs: TSDLInputTypes; JoyStickNumber: Integer );
-begin
- if itJoystick in InitInputs then
- FJoystick.JoySticks[ JoyStickNumber ].Enabled := true;
-
- if itKeyBoard in InitInputs then
- FKeyBoard.Enabled := true;
-
- if itMouse in InitInputs then
- FMouse.Enabled := true;
-end;
-
-function TSDLInputManager.UpdateInputs( event: TSDL_EVENT ): Boolean;
-begin
- Result := false;
- if ( FJoystick <> nil ) then
- Result := FJoystick.UpdateInput( event );
- if ( FKeyBoard <> nil ) then
- Result := FKeyBoard.UpdateInput( event );
- if ( FMouse <> nil ) then
- Result := FMouse.UpdateInput( event );
-end;
-
-{ TSDLJoyStick }
-procedure TSDLJoyStick.Close;
-begin
- SDL_JoystickClose( @FJoystick );
-end;
-
-constructor TSDLJoyStick.Create( Index : Integer );
-begin
- inherited Create;
- FJoystick := nil;
- FJoystickIndex := Index;
-end;
-
-destructor TSDLJoyStick.Destroy;
-begin
- if FJoystick <> nil then
- Close;
- inherited;
-end;
-
-procedure TSDLJoyStick.DoAxisMove(Event: TSDL_Event);
-begin
- if Assigned( FJoyAxisMoveEvent ) then
- begin
- FJoyAxisMoveEvent( Event.jaxis.which, Event.jaxis.axis, Event.jaxis.value );
- end
-end;
-
-procedure TSDLJoyStick.DoBallMove(Event: TSDL_Event);
-var
- BallPoint : TPoint;
-begin
- if Assigned( FJoyBallMoveEvent ) then
- begin
- BallPoint.x := Event.jball.xrel;
- BallPoint.y := Event.jball.yrel;
- FJoyBallMoveEvent( Event.jball.which, Event.jball.ball, BallPoint );
- end;
-end;
-
-procedure TSDLJoyStick.DoButtonDown(Event: TSDL_Event);
-begin
- if Assigned( FJoyButtonDownEvent ) then
- begin
- if ( Event.jbutton.state = SDL_PRESSED ) then
- FJoyButtonDownEvent( Event.jbutton.which, Event.jbutton.button, Event.jbutton.state );
- end;
-end;
-
-procedure TSDLJoyStick.DoButtonUp(Event: TSDL_Event);
-begin
- if Assigned( FJoyButtonUpEvent ) then
- begin
- if ( Event.jbutton.state = SDL_RELEASED ) then
- FJoyButtonUpEvent( Event.jbutton.which, Event.jbutton.button, Event.jbutton.state );
- end
-end;
-
-procedure TSDLJoyStick.DoHatMove(Event: TSDL_Event);
-begin
- if Assigned( FJoyHatMoveEvent ) then
- begin
- FJoyHatMoveEvent( Event.jhat.which, Event.jhat.hat, Event.jhat.value );
- end;
-end;
-
-function TSDLJoyStick.GetName: PChar;
-begin
- result := FJoystick.name;
-end;
-
-function TSDLJoyStick.GetNumAxes: integer;
-begin
- result := FJoystick.naxes;
-end;
-
-function TSDLJoyStick.GetNumBalls: integer;
-begin
- result := FJoystick.nballs;
-end;
-
-function TSDLJoyStick.GetNumButtons: integer;
-begin
- result := FJoystick.nbuttons;
-end;
-
-function TSDLJoyStick.GetNumHats: integer;
-begin
- result := FJoystick.nhats;
-end;
-
-procedure TSDLJoyStick.Open;
-begin
- FJoystick := SDL_JoyStickOpen( FJoystickIndex );
-end;
-
-function TSDLJoyStick.UpdateInput(Event: TSDL_EVENT): Boolean;
-begin
- Result := false;
-
- if ( FEnabled ) then
- begin
- case event.type_ of
- SDL_JOYAXISMOTION :
- begin
- DoAxisMove( Event );
- end;
-
- SDL_JOYBALLMOTION :
- begin
- DoBallMove( Event );
- end;
-
- SDL_JOYHATMOTION :
- begin
- DoHatMove( Event );
- end;
-
- SDL_JOYBUTTONDOWN :
- begin
- DoButtonDown( Event );
- end;
-
- SDL_JOYBUTTONUP :
- begin
- DoButtonUp( Event );
- end;
- end;
- end;
-end;
-
-{ TSDLCustomCursor }
-
-constructor TSDLCustomCursor.Create(const aFileName: string; aHotPoint: TPoint);
-begin
- inherited Create;
- FHotPoint := aHotPoint;
- LoadFromFile( aFileName );
-end;
-
-function TSDLCustomCursor.ScanForChar(str: string; ch: Char;
- startPos: Integer; lookFor: Boolean): Integer;
-begin
- Result := -1;
- while ( ( ( str[ startPos ] = ch ) <> lookFor ) and ( startPos < Length( str ) ) ) do
- inc( startPos );
- if startPos <> Length( str ) then
- Result := startPos;
-end;
-
-procedure TSDLCustomCursor.SetFileName(const aValue: string);
-begin
- LoadFromFile( aValue );
-end;
-
-{ TSDLXPMCursor }
-
-destructor TSDLXPMCursor.Destroy;
-begin
- FreeCursor;
- inherited;
-end;
-
-procedure TSDLXPMCursor.FreeCursor;
-begin
- if FCursor <> nil then
- begin
- SDL_FreeCursor( FCursor );
- FFileName := '';
- end;
-end;
-
-procedure TSDLXPMCursor.LoadFromFile(const aFileName: string);
-var
- xpmFile : Textfile;
- step : Integer;
- holdPos : Integer;
- counter : Integer;
- dimensions : array[ 1..3 ] of Integer;
- clr, clrNone, clrBlack, clrWhite : Char;
- data, mask : array of UInt8;
- i, col : Integer;
- LineString : string;
-begin
- FreeCursor;
- AssignFile( xpmFile, aFileName );
- Reset( xpmFile );
- step := 0;
- i := -1;
- clrBlack := 'X';
- clrWhite := ',';
- clrNone := ' ';
- counter := 0;
- while not ( eof( xpmFile ) ) do
- begin
- Readln( xpmFile, LineString );
- // scan for strings
- if LineString[ 1 ] = '"' then
- begin
- case step of
- 0 : // Get dimensions (should be width height number-of-colors ???)
- begin
- HoldPos := 2;
- counter := ScanForChar( LineString, ' ', HoldPos, False );
- counter := ScanForChar( LineString, ' ', counter, True );
- dimensions[ 1 ] := StrToInt( Copy( LineString, HoldPos, counter - HoldPos ) );
- counter := ScanForChar( LineString, ' ', counter, False );
- holdPos := counter;
- counter := ScanForChar( LineString, ' ', counter, True );
- dimensions[ 2 ] := StrToInt( Copy( LineString, holdPos, counter - HoldPos ) );
- counter := ScanForChar( LineString, ' ', counter, False );
- holdPos := counter;
- counter := ScanForChar( LineString, ' ', counter, True );
- dimensions[ 3 ] := StrToInt( Copy( LineString, holdPos, counter - HoldPos ) );
- step := 1;
- SetLength( data, ( dimensions[ 1 ] * dimensions[ 2 ] ) div 8 );
- SetLength( mask, ( dimensions[ 1 ] * dimensions[ 2 ] ) div 8 );
- //Log.LogStatus( 'Length = ' + IntToStr( ( dimensions[ 1 ] * dimensions[ 2 ] ) div 8 ), 'LoadCursorFromFile' );
- end;
- 1 : // get the symbols for transparent, black and white
- begin
- // get the symbol for the color
- clr := LineString[ 2 ];
- // look for the 'c' symbol
- counter := ScanForChar( LineString, 'c', 3, True );
- inc( counter );
- counter := ScanForChar( LineString, ' ', counter, False );
- if LowerCase( Copy( LineString, counter, 4 ) ) = 'none' then
- begin
- clrNone := clr;
- end;
- if LowerCase( Copy( LineString, counter, 7 ) ) = '#ffffff' then
- begin
- clrWhite := clr;
- end;
- if LowerCase( Copy( LineString, counter, 7 ) ) = '#000000' then
- begin
- clrBlack := clr;
- end;
- dec( dimensions[ 3 ] );
- if dimensions[ 3 ] = 0 then
- begin
- step := 2;
- counter := 0;
- end;
- end;
- 2 : // get cursor information -- modified from the SDL
- // documentation of SDL_CreateCursor.
- begin
- for col := 1 to dimensions[1] do
- begin
- if ( ( col mod 8 ) <> 1 ) then
- begin
- data[ i ] := data[ i ] shl 1;
- mask[ i ] := mask[ i ] shl 1;
- end
- else
- begin
- inc( i );
- data[ i ] := 0;
- mask[ i ] := 0;
- end;
- if LineString[ col ] = clrWhite then
- begin
- mask[ i ] := mask[ i ] or $01;
- end
- else if LineString[ col ] = clrBlack then
- begin
- data[ i ] := data[ i ] or $01;
- mask[ i ] := mask[ i ] or $01;
- end
- else if LineString[ col + 1 ] = clrNone then
- begin
- //
- end;
- end;
- inc(counter);
- if counter = dimensions[2] then
- step := 4;
- end;
- end;
- end;
- end;
- CloseFile( xpmFile );
- FCursor := SDL_CreateCursor( PUInt8( data ), PUInt8( mask ), dimensions[ 1 ], dimensions[ 2 ], FHotPoint.x, FHotPoint.y );
-end;
-
-procedure TSDLXPMCursor.LoadFromStream(aStream: TStream);
-begin
- inherited;
-
-end;
-
-procedure TSDLXPMCursor.Show;
-begin
- inherited;
- SDL_SetCursor( FCursor );
-end;
-
-{ TSDLCursorList }
-function TSDLCursorList.AddCursor(const aName : string; aObject : TSDLCustomCursor): Integer;
-begin
- result := inherited AddObject( aName, aObject );
-end;
-
-constructor TSDLCursorList.Create;
-begin
- inherited;
- Duplicates := dupIgnore;
-end;
-
-function TSDLCursorList.GetObject(aIndex: Integer): TSDLCustomCursor;
-begin
- result := TSDLCustomCursor( inherited GetObject( aIndex ) );
-end;
-
-procedure TSDLCursorList.PutObject(aIndex: Integer; aObject: TSDLCustomCursor);
-begin
- inherited PutObject( aIndex, aObject );
-end;
-
-end.
+unit sdlinput; +{ + $Id: sdlinput.pas,v 1.9 2007/08/22 21:18:43 savage Exp $ + +} +{******************************************************************************} +{ } +{ JEDI-SDL : Pascal units for SDL - Simple DirectMedia Layer } +{ SDL Input Wrapper } +{ } +{ } +{ The initial developer of this Pascal code was : } +{ Dominique Louis <Dominique@SavageSoftware.com.au> } +{ } +{ Portions created by Dominique Louis are } +{ Copyright (C) 2003 - 2100 Dominique Louis. } +{ } +{ } +{ Contributor(s) } +{ -------------- } +{ Dominique Louis <Dominique@SavageSoftware.com.au> } +{ } +{ Obtained through: } +{ Joint Endeavour of Delphi Innovators ( Project JEDI ) } +{ } +{ You may retrieve the latest version of this file at the Project } +{ JEDI home page, located at http://delphi-jedi.org } +{ } +{ The contents of this file are used with permission, subject to } +{ the Mozilla Public License Version 1.1 (the "License"); you may } +{ not use this file except in compliance with the License. You may } +{ obtain a copy of the License at } +{ http://www.mozilla.org/MPL/MPL-1.1.html } +{ } +{ Software distributed under the License is distributed on an } +{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or } +{ implied. See the License for the specific language governing } +{ rights and limitations under the License. } +{ } +{ Description } +{ ----------- } +{ SDL Mouse, Keyboard and Joystick wrapper } +{ } +{ } +{ Requires } +{ -------- } +{ SDL.dll on Windows platforms } +{ libSDL-1.1.so.0 on Linux platform } +{ } +{ Programming Notes } +{ ----------------- } +{ } +{ } +{ } +{ } +{ Revision History } +{ ---------------- } +{ March 12 2003 - DL : Initial creation } +{ } +{ February 02 2004 - DL : Added Custom Cursor Support to the Mouse class } +{ + $Log: sdlinput.pas,v $ + Revision 1.9 2007/08/22 21:18:43 savage + Thanks to Dean for his MouseDelta patch. + + Revision 1.8 2005/08/03 18:57:32 savage + Various updates and additions. Mainly to handle OpenGL 3D Window support and better cursor support for the mouse class + + Revision 1.7 2004/09/30 22:32:04 savage + Updated with slightly different header comments + + Revision 1.6 2004/09/12 21:52:58 savage + Slight changes to fix some issues with the sdl classes. + + Revision 1.5 2004/05/10 21:11:49 savage + changes required to help get SoAoS off the ground. + + Revision 1.4 2004/05/03 22:38:40 savage + Added the ability to enable or disable certain inputs @ runtime. Basically it just does not call UpdateInput if Enabled = false. + Can also disable and enable input devices via the InputManager. + + Revision 1.3 2004/04/28 21:27:01 savage + Updated Joystick code and event handlers. Needs testing... + + Revision 1.2 2004/02/14 22:36:29 savage + Fixed inconsistencies of using LoadLibrary and LoadModule. + Now all units make use of LoadModule rather than LoadLibrary and other dynamic proc procedures. + + Revision 1.1 2004/02/05 00:08:20 savage + Module 1.0 release + + +} +{******************************************************************************} + +interface + +{$i jedi-sdl.inc} + +uses + Classes, + sdl; + +type + TSDLInputType = ( itJoystick , itKeyBoard, itMouse ); + TSDLInputTypes = set of TSDLInputType; + + TSDLCustomInput = class( TObject ) + private + FEnabled: Boolean; + public + constructor Create; + function UpdateInput( event: TSDL_EVENT ) : Boolean; virtual; abstract; + property Enabled : Boolean read FEnabled write FEnabled; + end; + + TSDLJoyAxisMoveEvent = procedure ( Which: UInt8; Axis: UInt8; Value: SInt16 ) {$IFNDEF NOT_OO}of object{$ENDIF}; + TSDLJoyBallMoveEvent = procedure ( Which: UInt8; Ball: UInt8; RelativePos: TPoint ) {$IFNDEF NOT_OO}of object{$ENDIF}; + TSDLJoyHatMoveEvent = procedure ( Which: UInt8; Hat: UInt8; Value: SInt16 ) {$IFNDEF NOT_OO}of object{$ENDIF}; + TSDLJoyButtonEvent = procedure ( Which: UInt8; Button: UInt8; State: SInt16 ) {$IFNDEF NOT_OO}of object{$ENDIF}; + + + TSDLJoyStick = class( TSDLCustomInput ) + private + FJoystick : PSDL_Joystick; + FJoystickIndex : Integer; + FJoyAxisMoveEvent : TSDLJoyAxisMoveEvent; + FJoyBallMoveEvent : TSDLJoyBallMoveEvent; + FJoyHatMoveEvent : TSDLJoyHatMoveEvent; + FJoyButtonDownEvent : TSDLJoyButtonEvent; + FJoyButtonUpEvent : TSDLJoyButtonEvent; + procedure DoAxisMove( Event : TSDL_Event ); + procedure DoBallMove( Event : TSDL_Event ); + procedure DoHatMove( Event : TSDL_Event ); + procedure DoButtonDown( Event : TSDL_Event ); + procedure DoButtonUp( Event : TSDL_Event ); + function GetName: PChar; + function GetNumAxes: integer; + function GetNumBalls: integer; + function GetNumButtons: integer; + function GetNumHats: integer; + public + constructor Create( Index : Integer ); + destructor Destroy; override; + procedure Open; + procedure Close; + function UpdateInput( Event: TSDL_EVENT ) : Boolean; override; + property Name : PChar read GetName; + property NumAxes : integer read GetNumAxes; + property NumBalls : integer read GetNumBalls; + property NumButtons : integer read GetNumButtons; + property NumHats : integer read GetNumHats; + property OnAxisMove : TSDLJoyAxisMoveEvent read FJoyAxisMoveEvent write FJoyAxisMoveEvent; + property OnBallMove : TSDLJoyBallMoveEvent read FJoyBallMoveEvent write FJoyBallMoveEvent; + property OnHatMove : TSDLJoyHatMoveEvent read FJoyHatMoveEvent write FJoyHatMoveEvent; + property OnButtonDown : TSDLJoyButtonEvent read FJoyButtonDownEvent write FJoyButtonDownEvent; + property OnButtonUp : TSDLJoyButtonEvent read FJoyButtonUpEvent write FJoyButtonUpEvent; + end; + + TSDLJoySticks = class( TObject ) + private + FNumOfJoySticks: Integer; + FJoyStickList : TList; + function GetJoyStick(Index: integer): TSDLJoyStick; + procedure SetJoyStick(Index: integer; const Value: TSDLJoyStick); + public + constructor Create; + destructor Destroy; override; + function UpdateInput( event: TSDL_EVENT ) : Boolean; + property NumOfJoySticks : Integer read FNumOfJoySticks write FNumOfJoySticks; + property JoySticks[ Index : integer ] : TSDLJoyStick read GetJoyStick write SetJoyStick; + end; + + TSDLKeyBoardEvent = procedure ( var Key: TSDLKey; Shift: TSDLMod; unicode : UInt16 ) {$IFNDEF NOT_OO}of object{$ENDIF}; + + TSDLKeyBoard = class( TSDLCustomInput ) + private + FKeys : PKeyStateArr; + FOnKeyUp: TSDLKeyBoardEvent; + FOnKeyDown: TSDLKeyBoardEvent; + procedure DoKeyDown( keysym : PSDL_keysym ); + procedure DoKeyUp( keysym : PSDL_keysym ); + public + function IsKeyDown( Key : TSDLKey ) : Boolean; + function IsKeyUp( Key : TSDLKey ) : Boolean; + function UpdateInput( event: TSDL_EVENT ) : Boolean; override; + property Keys : PKeyStateArr read FKeys write FKeys; + property OnKeyDown : TSDLKeyBoardEvent read FOnKeyDown write FOnKeyDown; + property OnKeyUp : TSDLKeyBoardEvent read FOnKeyUp write FOnKeyUp; + end; + + TSDLMouseButtonEvent = procedure ( Button : Integer; Shift: TSDLMod; MousePos : TPoint ) {$IFNDEF NOT_OO}of object{$ENDIF}; + TSDLMouseMoveEvent = procedure ( Shift: TSDLMod; CurrentPos : TPoint; RelativePos : TPoint ) {$IFNDEF NOT_OO}of object{$ENDIF}; + TSDLMouseWheelEvent = procedure ( WheelDelta : Integer; Shift: TSDLMod; MousePos : TPoint ) {$IFNDEF NOT_OO}of object{$ENDIF}; + + TSDLCustomCursor = class( TObject ) + private + FFileName : string; + FHotPoint: TPoint; + procedure SetFileName(const aValue: string ); + function ScanForChar( str : string; ch : Char; startPos : Integer; lookFor : Boolean ) : Integer; + public + constructor Create( const aFileName : string; aHotPoint: TPoint ); + procedure LoadFromFile( const aFileName : string ); virtual; abstract; + procedure LoadFromStream( aStream : TStream ); virtual; abstract; + procedure Show; virtual; abstract; + property FileName : string read FFileName write SetFileName; + property HotPoint : TPoint read FHotPoint write FHotPoint; + end; + + TSDLXPMCursor = class( TSDLCustomCursor ) + private + FCursor : PSDL_Cursor; + procedure FreeCursor; + public + destructor Destroy; override; + procedure LoadFromFile( const aFileName : string ); override; + procedure LoadFromStream( aStream : TStream ); override; + procedure Show; override; + end; + + TSDLCursorList = class( TStringList ) + protected + function GetObject( aIndex : Integer ): TSDLCustomCursor; reintroduce; + procedure PutObject( aIndex : Integer; AObject : TSDLCustomCursor); reintroduce; + public + constructor Create; + function AddCursor(const aName : string; aObject : TSDLCustomCursor): Integer; virtual; + end; + + TSDLMouse = class( TSDLCustomInput ) + private + FDragging : Boolean; + FMousePos : TPoint; + FOnMouseUp: TSDLMouseButtonEvent; + FOnMouseDown: TSDLMouseButtonEvent; + FOnMouseMove: TSDLMouseMoveEvent; + FOnMouseWheel: TSDLMouseWheelEvent; + FCursorList : TSDLCursorList; // Cursor Pointer + procedure DoMouseMove( Event: TSDL_Event ); + procedure DoMouseDown( Event: TSDL_Event ); + procedure DoMouseUp( Event: TSDL_Event ); + procedure DoMouseWheelScroll( Event: TSDL_Event ); + function GetMousePosition: TPoint; + procedure SetMousePosition(const Value: TPoint); + function GetMouseDelta: TPoint; + public + destructor Destroy; override; + function UpdateInput( event: TSDL_EVENT ) : Boolean; override; + function MouseIsDown( Button : Integer ) : Boolean; + function MouseIsUp( Button : Integer ) : Boolean; + procedure ShowCursor; + procedure HideCursor; + property OnMouseDown : TSDLMouseButtonEvent read FOnMouseDown write FOnMouseDown; + property OnMouseUp : TSDLMouseButtonEvent read FOnMouseUp write FOnMouseUp; + property OnMouseMove : TSDLMouseMoveEvent read FOnMouseMove write FOnMouseMove; + property OnMouseWheel : TSDLMouseWheelEvent read FOnMouseWheel write FOnMouseWheel; + property MousePosition : TPoint read GetMousePosition write SetMousePosition; + property MouseDelta: TPoint read GetMouseDelta; + property Cursors : TSDLCursorList read FCursorList write FCursorList; + end; + + TSDLInputManager = class( TObject ) + private + FKeyBoard : TSDLKeyBoard; + FMouse : TSDLMouse; + FJoystick : TSDLJoysticks; + public + constructor Create( InitInputs : TSDLInputTypes ); + destructor Destroy; override; + procedure Disable( InitInputs : TSDLInputTypes; JoyStickNumber : Integer = 0 ); + procedure Enable( InitInputs : TSDLInputTypes; JoyStickNumber : Integer = 0 ); + function UpdateInputs( event: TSDL_EVENT ) : Boolean; + property KeyBoard : TSDLKeyBoard read FKeyBoard write FKeyBoard; + property Mouse : TSDLMouse read FMouse write FMouse; + property JoyStick : TSDLJoysticks read FJoyStick write FJoyStick; + end; + +implementation + +uses + SysUtils; + +{ TSDLCustomInput } +constructor TSDLCustomInput.Create; +begin + inherited; + FEnabled := true; +end; + +{ TSDLJoysticks } +constructor TSDLJoysticks.Create; +var + i : integer; +begin + inherited; + if ( SDL_WasInit( SDL_INIT_JOYSTICK ) = 0 ) then + SDL_InitSubSystem( SDL_INIT_JOYSTICK ); + FNumOfJoySticks := SDL_NumJoysticks; + FJoyStickList := TList.Create; + for i := 0 to FNumOfJoySticks - 1 do + begin + FJoyStickList.Add( TSDLJoyStick.Create( i ) ); + end; +end; + +destructor TSDLJoysticks.Destroy; +var + i : integer; +begin + if FJoyStickList.Count > 0 then + begin + for i := 0 to FJoyStickList.Count - 1 do + begin + TSDLJoyStick( FJoyStickList.Items[i] ).Free; + end; + end; + SDL_QuitSubSystem( SDL_INIT_JOYSTICK ); + inherited; +end; + +function TSDLJoySticks.GetJoyStick(Index: integer): TSDLJoyStick; +begin + Result := TSDLJoyStick( FJoyStickList[ Index ] ); +end; + +procedure TSDLJoySticks.SetJoyStick(Index: integer; + const Value: TSDLJoyStick); +begin + FJoyStickList[ Index ] := @Value; +end; + +function TSDLJoysticks.UpdateInput(event: TSDL_EVENT): Boolean; +var + i : integer; +begin + result := false; + if FJoyStickList.Count > 0 then + begin + for i := 0 to FJoyStickList.Count - 1 do + begin + TSDLJoyStick( FJoyStickList.Items[i] ).UpdateInput( event ); + end; + end; +end; + +{ TSDLKeyBoard } +procedure TSDLKeyBoard.DoKeyDown(keysym: PSDL_keysym); +begin + if Assigned( FOnKeyDown ) then + FOnKeyDown( keysym.sym , keysym.modifier, keysym.unicode ); +end; + +procedure TSDLKeyBoard.DoKeyUp(keysym: PSDL_keysym); +begin + if Assigned( FOnKeyUp ) then + FOnKeyUp( keysym.sym , keysym.modifier, keysym.unicode ); +end; + +function TSDLKeyBoard.IsKeyDown( Key: TSDLKey ): Boolean; +begin + SDL_PumpEvents; + + // Populate Keys array + FKeys := PKeyStateArr( SDL_GetKeyState( nil ) ); + Result := ( FKeys[Key] = SDL_PRESSED ); +end; + +function TSDLKeyBoard.IsKeyUp( Key: TSDLKey ): Boolean; +begin + SDL_PumpEvents; + + // Populate Keys array + FKeys := PKeyStateArr( SDL_GetKeyState( nil ) ); + Result := ( FKeys[Key] = SDL_RELEASED ); +end; + +function TSDLKeyBoard.UpdateInput(event: TSDL_EVENT): Boolean; +begin + result := false; + if ( FEnabled ) then + begin + case event.type_ of + SDL_KEYDOWN : + begin + // handle key presses + DoKeyDown( @event.key.keysym ); + result := true; + end; + + SDL_KEYUP : + begin + // handle key releases + DoKeyUp( @event.key.keysym ); + result := true; + end; + end; + end; +end; + +{ TSDLMouse } +destructor TSDLMouse.Destroy; +begin + + inherited; +end; + +procedure TSDLMouse.DoMouseDown( Event: TSDL_Event ); +var + CurrentPos : TPoint; +begin + FDragging := true; + if Assigned( FOnMouseDown ) then + begin + CurrentPos.x := event.button.x; + CurrentPos.y := event.button.y; + FOnMouseDown( event.button.button, SDL_GetModState, CurrentPos ); + end; +end; + +procedure TSDLMouse.DoMouseMove( Event: TSDL_Event ); +var + CurrentPos, RelativePos : TPoint; +begin + if Assigned( FOnMouseMove ) then + begin + CurrentPos.x := event.motion.x; + CurrentPos.y := event.motion.y; + RelativePos.x := event.motion.xrel; + RelativePos.y := event.motion.yrel; + FOnMouseMove( SDL_GetModState, CurrentPos, RelativePos ); + end; +end; + +procedure TSDLMouse.DoMouseUp( event: TSDL_EVENT ); +var + Point : TPoint; +begin + FDragging := false; + if Assigned( FOnMouseUp ) then + begin + Point.x := event.button.x; + Point.y := event.button.y; + FOnMouseUp( event.button.button, SDL_GetModState, Point ); + end; +end; + +procedure TSDLMouse.DoMouseWheelScroll( event: TSDL_EVENT ); +var + Point : TPoint; +begin + if Assigned( FOnMouseWheel ) then + begin + Point.x := event.button.x; + Point.y := event.button.y; + if ( event.button.button = SDL_BUTTON_WHEELUP ) then + FOnMouseWheel( SDL_BUTTON_WHEELUP, SDL_GetModState, Point ) + else + FOnMouseWheel( SDL_BUTTON_WHEELDOWN, SDL_GetModState, Point ); + end; +end; + +function TSDLMouse.GetMouseDelta: TPoint; +begin + SDL_PumpEvents; + + SDL_GetRelativeMouseState( Result.X, Result.Y ); +end; + +function TSDLMouse.GetMousePosition: TPoint; +begin + SDL_PumpEvents; + + SDL_GetMouseState( FMousePos.X, FMousePos.Y ); + Result := FMousePos; +end; + +procedure TSDLMouse.HideCursor; +begin + SDL_ShowCursor( SDL_DISABLE ); +end; + +function TSDLMouse.MouseIsDown(Button: Integer): Boolean; +begin + SDL_PumpEvents; + + Result := ( SDL_GetMouseState( FMousePos.X, FMousePos.Y ) and SDL_BUTTON( Button ) = 0 ); +end; + +function TSDLMouse.MouseIsUp(Button: Integer): Boolean; +begin + SDL_PumpEvents; + + Result := not ( SDL_GetMouseState( FMousePos.X, FMousePos.Y ) and SDL_BUTTON( Button ) = 0 ); +end; + +procedure TSDLMouse.SetMousePosition(const Value: TPoint); +begin + SDL_WarpMouse( Value.x, Value.y ); +end; + +procedure TSDLMouse.ShowCursor; +begin + SDL_ShowCursor( SDL_ENABLE ); +end; + +function TSDLMouse.UpdateInput(event: TSDL_EVENT): Boolean; +begin + result := false; + if ( FEnabled ) then + begin + case event.type_ of + SDL_MOUSEMOTION : + begin + // handle Mouse Move + DoMouseMove( event ); + end; + + SDL_MOUSEBUTTONDOWN : + begin + // handle Mouse Down + if ( event.button.button = SDL_BUTTON_WHEELUP ) + or ( event.button.button = SDL_BUTTON_WHEELDOWN ) then + DoMouseWheelScroll( event ) + else + DoMouseDown( event ); + end; + + SDL_MOUSEBUTTONUP : + begin + // handle Mouse Up + if ( event.button.button = SDL_BUTTON_WHEELUP ) + or ( event.button.button = SDL_BUTTON_WHEELDOWN ) then + DoMouseWheelScroll( event ) + else + DoMouseUp( event ); + end; + end; + end; +end; + +{ TSDLInputManager } +constructor TSDLInputManager.Create(InitInputs: TSDLInputTypes); +begin + inherited Create; + if itJoystick in InitInputs then + FJoystick := TSDLJoysticks.Create; + + if itKeyBoard in InitInputs then + FKeyBoard := TSDLKeyBoard.Create; + + if itMouse in InitInputs then + FMouse := TSDLMouse.Create; +end; + +destructor TSDLInputManager.Destroy; +begin + if FJoystick <> nil then + FreeAndNil( FJoystick ); + if FKeyBoard <> nil then + FreeAndNil( FKeyBoard ); + if FMouse <> nil then + FreeAndNil( FMouse ); + inherited; +end; + +procedure TSDLInputManager.Disable( InitInputs : TSDLInputTypes; JoyStickNumber : Integer ); +begin + if itJoystick in InitInputs then + FJoystick.JoySticks[ JoyStickNumber ].Enabled := false; + + if itKeyBoard in InitInputs then + FKeyBoard.Enabled := false; + + if itMouse in InitInputs then + FMouse.Enabled := false; +end; + +procedure TSDLInputManager.Enable( InitInputs: TSDLInputTypes; JoyStickNumber: Integer ); +begin + if itJoystick in InitInputs then + FJoystick.JoySticks[ JoyStickNumber ].Enabled := true; + + if itKeyBoard in InitInputs then + FKeyBoard.Enabled := true; + + if itMouse in InitInputs then + FMouse.Enabled := true; +end; + +function TSDLInputManager.UpdateInputs( event: TSDL_EVENT ): Boolean; +begin + Result := false; + if ( FJoystick <> nil ) then + Result := FJoystick.UpdateInput( event ); + if ( FKeyBoard <> nil ) then + Result := FKeyBoard.UpdateInput( event ); + if ( FMouse <> nil ) then + Result := FMouse.UpdateInput( event ); +end; + +{ TSDLJoyStick } +procedure TSDLJoyStick.Close; +begin + SDL_JoystickClose( @FJoystick ); +end; + +constructor TSDLJoyStick.Create( Index : Integer ); +begin + inherited Create; + FJoystick := nil; + FJoystickIndex := Index; +end; + +destructor TSDLJoyStick.Destroy; +begin + if FJoystick <> nil then + Close; + inherited; +end; + +procedure TSDLJoyStick.DoAxisMove(Event: TSDL_Event); +begin + if Assigned( FJoyAxisMoveEvent ) then + begin + FJoyAxisMoveEvent( Event.jaxis.which, Event.jaxis.axis, Event.jaxis.value ); + end +end; + +procedure TSDLJoyStick.DoBallMove(Event: TSDL_Event); +var + BallPoint : TPoint; +begin + if Assigned( FJoyBallMoveEvent ) then + begin + BallPoint.x := Event.jball.xrel; + BallPoint.y := Event.jball.yrel; + FJoyBallMoveEvent( Event.jball.which, Event.jball.ball, BallPoint ); + end; +end; + +procedure TSDLJoyStick.DoButtonDown(Event: TSDL_Event); +begin + if Assigned( FJoyButtonDownEvent ) then + begin + if ( Event.jbutton.state = SDL_PRESSED ) then + FJoyButtonDownEvent( Event.jbutton.which, Event.jbutton.button, Event.jbutton.state ); + end; +end; + +procedure TSDLJoyStick.DoButtonUp(Event: TSDL_Event); +begin + if Assigned( FJoyButtonUpEvent ) then + begin + if ( Event.jbutton.state = SDL_RELEASED ) then + FJoyButtonUpEvent( Event.jbutton.which, Event.jbutton.button, Event.jbutton.state ); + end +end; + +procedure TSDLJoyStick.DoHatMove(Event: TSDL_Event); +begin + if Assigned( FJoyHatMoveEvent ) then + begin + FJoyHatMoveEvent( Event.jhat.which, Event.jhat.hat, Event.jhat.value ); + end; +end; + +function TSDLJoyStick.GetName: PChar; +begin + result := FJoystick.name; +end; + +function TSDLJoyStick.GetNumAxes: integer; +begin + result := FJoystick.naxes; +end; + +function TSDLJoyStick.GetNumBalls: integer; +begin + result := FJoystick.nballs; +end; + +function TSDLJoyStick.GetNumButtons: integer; +begin + result := FJoystick.nbuttons; +end; + +function TSDLJoyStick.GetNumHats: integer; +begin + result := FJoystick.nhats; +end; + +procedure TSDLJoyStick.Open; +begin + FJoystick := SDL_JoyStickOpen( FJoystickIndex ); +end; + +function TSDLJoyStick.UpdateInput(Event: TSDL_EVENT): Boolean; +begin + Result := false; + + if ( FEnabled ) then + begin + case event.type_ of + SDL_JOYAXISMOTION : + begin + DoAxisMove( Event ); + end; + + SDL_JOYBALLMOTION : + begin + DoBallMove( Event ); + end; + + SDL_JOYHATMOTION : + begin + DoHatMove( Event ); + end; + + SDL_JOYBUTTONDOWN : + begin + DoButtonDown( Event ); + end; + + SDL_JOYBUTTONUP : + begin + DoButtonUp( Event ); + end; + end; + end; +end; + +{ TSDLCustomCursor } + +constructor TSDLCustomCursor.Create(const aFileName: string; aHotPoint: TPoint); +begin + inherited Create; + FHotPoint := aHotPoint; + LoadFromFile( aFileName ); +end; + +function TSDLCustomCursor.ScanForChar(str: string; ch: Char; + startPos: Integer; lookFor: Boolean): Integer; +begin + Result := -1; + while ( ( ( str[ startPos ] = ch ) <> lookFor ) and ( startPos < Length( str ) ) ) do + inc( startPos ); + if startPos <> Length( str ) then + Result := startPos; +end; + +procedure TSDLCustomCursor.SetFileName(const aValue: string); +begin + LoadFromFile( aValue ); +end; + +{ TSDLXPMCursor } + +destructor TSDLXPMCursor.Destroy; +begin + FreeCursor; + inherited; +end; + +procedure TSDLXPMCursor.FreeCursor; +begin + if FCursor <> nil then + begin + SDL_FreeCursor( FCursor ); + FFileName := ''; + end; +end; + +procedure TSDLXPMCursor.LoadFromFile(const aFileName: string); +var + xpmFile : Textfile; + step : Integer; + holdPos : Integer; + counter : Integer; + dimensions : array[ 1..3 ] of Integer; + clr, clrNone, clrBlack, clrWhite : Char; + data, mask : array of UInt8; + i, col : Integer; + LineString : string; +begin + FreeCursor; + AssignFile( xpmFile, aFileName ); + Reset( xpmFile ); + step := 0; + i := -1; + clrBlack := 'X'; + clrWhite := ','; + clrNone := ' '; + counter := 0; + while not ( eof( xpmFile ) ) do + begin + Readln( xpmFile, LineString ); + // scan for strings + if LineString[ 1 ] = '"' then + begin + case step of + 0 : // Get dimensions (should be width height number-of-colors ???) + begin + HoldPos := 2; + counter := ScanForChar( LineString, ' ', HoldPos, False ); + counter := ScanForChar( LineString, ' ', counter, True ); + dimensions[ 1 ] := StrToInt( Copy( LineString, HoldPos, counter - HoldPos ) ); + counter := ScanForChar( LineString, ' ', counter, False ); + holdPos := counter; + counter := ScanForChar( LineString, ' ', counter, True ); + dimensions[ 2 ] := StrToInt( Copy( LineString, holdPos, counter - HoldPos ) ); + counter := ScanForChar( LineString, ' ', counter, False ); + holdPos := counter; + counter := ScanForChar( LineString, ' ', counter, True ); + dimensions[ 3 ] := StrToInt( Copy( LineString, holdPos, counter - HoldPos ) ); + step := 1; + SetLength( data, ( dimensions[ 1 ] * dimensions[ 2 ] ) div 8 ); + SetLength( mask, ( dimensions[ 1 ] * dimensions[ 2 ] ) div 8 ); + //Log.LogStatus( 'Length = ' + IntToStr( ( dimensions[ 1 ] * dimensions[ 2 ] ) div 8 ), 'LoadCursorFromFile' ); + end; + 1 : // get the symbols for transparent, black and white + begin + // get the symbol for the color + clr := LineString[ 2 ]; + // look for the 'c' symbol + counter := ScanForChar( LineString, 'c', 3, True ); + inc( counter ); + counter := ScanForChar( LineString, ' ', counter, False ); + if LowerCase( Copy( LineString, counter, 4 ) ) = 'none' then + begin + clrNone := clr; + end; + if LowerCase( Copy( LineString, counter, 7 ) ) = '#ffffff' then + begin + clrWhite := clr; + end; + if LowerCase( Copy( LineString, counter, 7 ) ) = '#000000' then + begin + clrBlack := clr; + end; + dec( dimensions[ 3 ] ); + if dimensions[ 3 ] = 0 then + begin + step := 2; + counter := 0; + end; + end; + 2 : // get cursor information -- modified from the SDL + // documentation of SDL_CreateCursor. + begin + for col := 1 to dimensions[1] do + begin + if ( ( col mod 8 ) <> 1 ) then + begin + data[ i ] := data[ i ] shl 1; + mask[ i ] := mask[ i ] shl 1; + end + else + begin + inc( i ); + data[ i ] := 0; + mask[ i ] := 0; + end; + if LineString[ col ] = clrWhite then + begin + mask[ i ] := mask[ i ] or $01; + end + else if LineString[ col ] = clrBlack then + begin + data[ i ] := data[ i ] or $01; + mask[ i ] := mask[ i ] or $01; + end + else if LineString[ col + 1 ] = clrNone then + begin + // + end; + end; + inc(counter); + if counter = dimensions[2] then + step := 4; + end; + end; + end; + end; + CloseFile( xpmFile ); + FCursor := SDL_CreateCursor( PUInt8( data ), PUInt8( mask ), dimensions[ 1 ], dimensions[ 2 ], FHotPoint.x, FHotPoint.y ); +end; + +procedure TSDLXPMCursor.LoadFromStream(aStream: TStream); +begin + inherited; + +end; + +procedure TSDLXPMCursor.Show; +begin + inherited; + SDL_SetCursor( FCursor ); +end; + +{ TSDLCursorList } +function TSDLCursorList.AddCursor(const aName : string; aObject : TSDLCustomCursor): Integer; +begin + result := inherited AddObject( aName, aObject ); +end; + +constructor TSDLCursorList.Create; +begin + inherited; + Duplicates := dupIgnore; +end; + +function TSDLCursorList.GetObject(aIndex: Integer): TSDLCustomCursor; +begin + result := TSDLCustomCursor( inherited GetObject( aIndex ) ); +end; + +procedure TSDLCursorList.PutObject(aIndex: Integer; aObject: TSDLCustomCursor); +begin + inherited PutObject( aIndex, aObject ); +end; + +end. |