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{
fpGUI - Free Pascal GUI Library
fpGFX - Main unit for the core drawing engine of fpGUI
Copyright (C) 2000 - 2006 See the file AUTHORS.txt, included in this
distribution, for details of the copyright.
See the file COPYING.modifiedLGPL, included in this distribution,
for details about redistributing fpGUI.
This program 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.
}
unit fpgfx;
{$ifdef fpc}
{$mode delphi}{$H+}
{$endif}
interface
uses
Classes, SysUtils,
gfxinterface, gfxbase;
type
{ TFFont }
TFFont = class(TDefFont)
end;
{ TFCanvas }
TFCanvas = class(TDefCanvas)
end;
{ TFBitmap }
TFBitmap = class(TDefBitmap)
end;
{ TFScreen }
TFScreen = class(TDefScreen)
end;
{ TFWindow }
TFWindow = class(TDefWindow)
end;
{ TFApplication }
TFApplication = class(TDefApplication)
private
FDisplayName: String;
protected
FTitle: String;
procedure SetTitle(const ATitle: String);
public
constructor Create; override;
destructor Destroy; override;
// procedure CreateForm(InstanceClass: TComponentClass; var Reference);
property Title: String read FTitle write SetTitle;
end;
{ Using the singleton pattern to hide instance variables and
only instantiate them when they are referred to for the first time. }
function GFScreen: TFScreen;
function GFApplication: TFApplication;
implementation
var
uScreen: TFScreen;
uApplication: TFApplication;
function GFScreen: TFScreen;
begin
if uScreen = nil then
uScreen := TFScreen.Create;
result := uScreen;
end;
function GFApplication: TFApplication;
begin
if uApplication = nil then
uApplication := TFApplication.Create;
result := uApplication;
end;
{ TFApplication }
constructor TFApplication.Create;
begin
inherited Create;
end;
destructor TFApplication.Destroy;
begin
inherited Destroy;
end;
{procedure TFApplication.CreateForm(AForm: TCustomForm);
var
form: PForm;
Filename: String;
TextStream, BinStream: TStream;
begin
form := @Reference;
form^ := TCustomForm(InstanceClass.Create(Self));
Filename := LowerCase(Copy(InstanceClass.ClassName, 2, 255)) + '.frm';
TextStream := TFileStream.Create(Filename, fmOpenRead);
BinStream := TMemoryStream.Create;
ObjectTextToBinary(TextStream, BinStream);
TextStream.Free;
BinStream.Position := 0;
BinStream.ReadComponent(Form^);
BinStream.Free;
Form^.Show;
end;}
procedure TFApplication.SetTitle(const ATitle: String);
begin
if ATitle <> FTitle then FTitle := ATitle;
end;
{*******************************************************************
* Initialization section
*
* DESCRIPTION: Upon startup FApplication and FScreen objects are created
* and memory for them allocated.
*
*******************************************************************}
initialization
uScreen := nil;
uApplication := nil;
{*******************************************************************
* Finalization section
*
* DESCRIPTION: Free memory allocated on the initialization section
*
*******************************************************************}
finalization
uApplication.Free;
uScreen.Free;
end.
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