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(*
GTK-Kylix Library: GTKClasses - Non-visual objects
Version 0.6.4 (last updated 2003-04-03)
Copyright (C) 2003 Tomas Bzatek <tbzatek@users.sourceforge.net>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307 USA.
*)
unit GTKClasses;
interface
uses gtk2, gdk2, glib2, Classes, SysUtils;
type
TGDKColor = record
pixel: Cardinal;
red, green, blue: Word;
end;
(****************************************** TGLIST ******************************************************************************)
TGList = class(TComponent)
private
FNotify: TNotifyEvent;
public
FList: PGList;
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure Append(Data: Pointer); overload;
procedure Append(Data: string); overload;
procedure Delete(Index: integer);
function Count: integer;
published
property Notify: TNotifyEvent read FNotify write FNotify;
end;
(****************************************** TGTKTIMER ***************************************************************************)
TGTKTimer = class(TComponent)
private
FOnTimer: TNotifyEvent;
FHandlerID: guint;
FEnabled: boolean;
FInterval: Cardinal;
procedure SetEnabled(Value: boolean);
procedure SetInterval(Value: Cardinal);
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure Start;
procedure Stop;
published
property OnTimer: TNotifyEvent read FOnTimer write FOnTimer;
property Enabled: boolean read FEnabled write SetEnabled default False;
property Interval: Cardinal read FInterval write SetInterval;
end;
(********************************************************************************************************************************)
(********************************************************************************************************************************)
implementation
uses GTKUtils;
(********************************************************************************************************************************)
(********************************************************************************************************************************)
constructor TGList.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FList := nil;
FNotify := nil;
end;
destructor TGList.Destroy;
begin
g_list_free(FList);
inherited Destroy;
end;
procedure TGList.Append(Data: Pointer);
begin
FList := g_list_append(FList, Data);
if Assigned(FNotify) then FNotify(Self);
end;
procedure TGList.Append(Data: string);
begin
Append(Pointer(StringToPgchar(Data)));
end;
procedure TGList.Delete(Index: integer);
var El: PGSList;
begin
El := g_list_nth_data(FList, Index);
if El <> nil then FList := g_list_remove(FList, El);
end;
function TGList.Count: integer;
begin
Result := 0;
if FList <> nil then Result := g_list_length(FList);
end;
(********************************************************************************************************************************)
(********************************************************************************************************************************)
constructor TGTKTimer.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FOnTimer := nil;
FEnabled := False;
FInterval := 0;
FHandlerID := 0;
end;
destructor TGTKTimer.Destroy;
begin
SetEnableD(False);
inherited Destroy;
end;
procedure TGTKTimer.SetEnabled(Value: boolean);
begin
if Value <> FEnabled then begin
FEnabled := Value;
if Value then Start
else Stop;
end;
end;
procedure TGTKTimer.SetInterval(Value: Cardinal);
begin
if FInterval <> Value then begin
FInterval := Value;
Stop;
Start;
end;
end;
function TGTKTimer_Timeout(data: gpointer): gboolean; cdecl;
begin
if Assigned(TGTKTimer(data).FOnTimer) then TGTKTimer(data).FOnTimer(TGTKTimer(data));
Result := True;
end;
procedure TGTKTimer.Start;
begin
if FHandlerID > 0 then Stop;
if FEnabled then FHandlerID := gtk_timeout_add(FInterval, TGTKTimer_Timeout, Self);
end;
procedure TGTKTimer.Stop;
begin
if FHandlerID > 0 then gtk_timeout_remove(FHandlerID);
FHandlerID := 0;
end;
(********************************************************************************************************************************)
(********************************************************************************************************************************)
end.
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