86 lines
2.0 KiB
Plaintext
86 lines
2.0 KiB
Plaintext
(*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* http://www.opensource.org/licenses/cddl1.php.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* http://www.opensource.org/licenses/cddl1.php. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying * information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Portions Copyright 2007 Andreas Schneider
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*)
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unit UGraphicHelper;
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{$mode objfpc}{$H+}
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interface
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function ARGB2RGB(Value: Word): Integer;
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function RGB2ARGB(Value: Integer): Word;
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//New functions for Vampyre Imaging Lib
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function DecodeUOColor(Value: Word): Integer;
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function EncodeUOColor(Value: Integer): Word;
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implementation
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function ARGB2RGB(Value: Word): Integer;
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var
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R, G, B: Byte;
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begin
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R := ((Value shr 10) and $1F) * 8;
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G := ((Value shr 5) and $1F) * 8;
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B := (Value and $1F) * 8;
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Result := R + G shl 8 + B shl 16;
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end;
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function RGB2ARGB(Value: Integer): Word;
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var
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R, G, B: Byte;
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begin
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R := (Value and $FF) div 8;
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G := ((Value shr 8) and $FF) div 8;
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B := ((Value shr 16) and $FF) div 8;
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Result := (R shl 10) + (G shl 5) + B;
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end;
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function DecodeUOColor(Value: Word): Integer;
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var
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R, G, B: Byte;
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begin
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R := ((Value shr 10) and $1F) * 8;
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G := ((Value shr 5) and $1F) * 8;
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B := (Value and $1F) * 8;
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Result := B + G shl 8 + R shl 16;
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end;
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function EncodeUOColor(Value: Integer): Word;
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var
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R, G, B: Byte;
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begin
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B := (Value and $FF) div 8;
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G := ((Value shr 8) and $FF) div 8;
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R := ((Value shr 16) and $FF) div 8;
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Result := (R shl 10) + (G shl 5) + B;
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end;
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end.
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