{ Free Pascal port of the OpenPTC C++ library. Copyright (C) 2001-2003, 2006, 2007, 2009-2011 Nikolay Nikolov (nickysn@users.sourceforge.net) Original C++ version by Glenn Fiedler (ptc@gaffer.org) This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version with the following modification: As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules,and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser 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 } type TPTCPalette = class(TInterfacedObject, IPTCPalette) private FLocked: Boolean; FHandle: THermesPaletteHandle; public constructor Create; constructor Create(const AData: array of Uint32); constructor Create(APalette: IPTCPalette); destructor Destroy; override; // procedure Assign(const APalette: TPTCPalette); // function Equals(const APalette: TPTCPalette): Boolean; function Lock: PUint32; procedure Unlock; procedure Load(const AData: array of Uint32); procedure Load(AData: Pointer); procedure Save(var AData: array of Uint32); procedure Save(AData: Pointer); function Data: PUint32; function GetHermesPaletteHandle: THermesPaletteHandle; end; class function TPTCPaletteFactory.CreateNew: IPTCPalette; begin Result := TPTCPalette.Create; end; class function TPTCPaletteFactory.CreateNew(const AData: array of Uint32): IPTCPalette; begin Result := TPTCPalette.Create(AData); end; class function TPTCPaletteFactory.CreateNew(APalette: IPTCPalette): IPTCPalette; begin Result := TPTCPalette.Create(APalette); end; constructor TPTCPalette.Create; var zero: array [0..255] of Uint32; begin FLocked := False; if not Hermes_Init then raise TPTCError.Create('could not initialize hermes'); FHandle := Hermes_PaletteInstance; if FHandle = nil then raise TPTCError.Create('could not create hermes palette instance'); FillChar(zero, SizeOf(zero), 0); Load(zero); end; constructor TPTCPalette.Create(const AData: array of Uint32); begin FLocked := False; if not Hermes_Init then raise TPTCError.Create('could not initialize hermes'); FHandle := Hermes_PaletteInstance; if FHandle = nil then raise TPTCError.Create('could not create hermes palette instance'); Load(AData); end; constructor TPTCPalette.Create(APalette: IPTCPalette); begin FLocked := False; if not Hermes_Init then raise TPTCError.Create('could not initialize hermes'); FHandle := Hermes_PaletteInstance; if FHandle = nil then raise TPTCError.Create('could not create hermes palette instance'); Hermes_PaletteSet(FHandle, Hermes_PaletteGet(APalette.GetHermesPaletteHandle)); end; destructor TPTCPalette.Destroy; begin if FLocked then raise TPTCError.Create('palette is still locked'); Hermes_PaletteReturn(FHandle); Hermes_Done; inherited Destroy; end; {procedure TPTCPalette.Assign(const APalette: TPTCPalette); begin if Self = APalette then exit; Hermes_PaletteSet(FHandle, Hermes_PaletteGet(APalette.FHandle)); end; function TPTCPalette.Equals(const APalette: TPTCPalette): Boolean; begin Equals := CompareDWord(Hermes_PaletteGet(FHandle)^, Hermes_PaletteGet(APalette.FHandle)^, 1024 div 4) = 0; end; } function TPTCPalette.Lock: PUint32; begin if FLocked then raise TPTCError.Create('palette is already locked'); FLocked := True; Result := Hermes_PaletteGet(FHandle); end; procedure TPTCPalette.Unlock; begin if not FLocked then raise TPTCError.Create('palette is not locked'); FLocked := False; end; procedure TPTCPalette.Load(const AData: array of Uint32); begin Hermes_PaletteSet(FHandle, @AData); end; procedure TPTCPalette.Load(AData: Pointer); begin Hermes_PaletteSet(FHandle, AData); end; procedure TPTCPalette.Save(var AData: array of Uint32); begin Move(Hermes_PaletteGet(FHandle)^, AData, 1024); end; procedure TPTCPalette.Save(AData: Pointer); begin Move(Hermes_PaletteGet(FHandle)^, AData^, 1024); end; function TPTCPalette.Data: PUint32; begin Result := Hermes_PaletteGet(FHandle); end; function TPTCPalette.GetHermesPaletteHandle: THermesPaletteHandle; begin Result := FHandle; end;