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{* UltraStar Deluxe - Karaoke Game
*
* UltraStar Deluxe is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*}
unit TextGL;
interface
{$IFDEF FPC}
{$MODE Delphi}
{$ENDIF}
{$I switches.inc}
uses
gl,
glext,
SDL,
Classes,
UTexture,
UFont,
UPath,
ULog;
type
PGLFont = ^TGLFont;
TGLFont = record
Font: TScalableFont;
X, Y, Z: real;
end;
var
Fonts: array of TGLFont;
ActFont: integer;
procedure BuildFont; // build our bitmap font
procedure KillFont; // delete the font
function glTextWidth(const text: UTF8String): real; // returns text width
procedure glPrint(const text: UTF8String); // custom GL "Print" routine
procedure ResetFont(); // reset font settings of active font
procedure SetFontPos(X, Y: real); // sets X and Y
procedure SetFontZ(Z: real); // sets Z
procedure SetFontSize(Size: real);
procedure SetFontStyle(Style: integer); // sets active font style (normal, bold, etc)
procedure SetFontItalic(Enable: boolean); // sets italic type letter (works for all fonts)
procedure SetFontReflection(Enable:boolean;Spacing: real); // enables/disables text reflection
implementation
uses
UTextEncoding,
SysUtils,
IniFiles,
UCommon,
UMain,
UPathUtils;
function FindFontFile(FontIni: TCustomIniFile; Font: string): IPath;
var
Filename: IPath;
begin
Filename := Path(FontIni.ReadString(Font, 'File', ''));
Result := FontPath.Append(Filename);
// if path does not exist, try as an absolute path
if (not Result.IsFile) then
Result := Filename;
end;
procedure BuildFont;
var
FontIni: TMemIniFile;
FontFile: IPath;
begin
ActFont := 0;
SetLength(Fonts, 4);
FontIni := TMemIniFile.Create(FontPath.Append('fonts.ini').ToNative);
try
// Normal
FontFile := FindFontFile(FontIni, 'Normal');
Fonts[0].Font := TFTScalableFont.Create(FontFile, 64);
//Fonts[0].Font.GlyphSpacing := 1.4;
//Fonts[0].Font.Aspect := 1.2;
// Bold
FontFile := FindFontFile(FontIni, 'Bold');
Fonts[1].Font := TFTScalableFont.Create(FontFile, 64);
// Outline1
FontFile := FindFontFile(FontIni, 'Outline1');
Fonts[2].Font := TFTScalableOutlineFont.Create(FontFile, 64, 0.06);
//TFTScalableOutlineFont(Fonts[2].Font).SetOutlineColor(0.3, 0.3, 0.3);
// Outline2
FontFile := FindFontFile(FontIni, 'Outline2');
Fonts[3].Font := TFTScalableOutlineFont.Create(FontFile, 64, 0.08);
except
on E: Exception do
Log.LogCritical(E.Message, 'BuildFont');
end;
// close ini-file
FontIni.Free;
end;
// Deletes the font
procedure KillFont;
begin
// delete all characters
//glDeleteLists(..., 256);
end;
function glTextWidth(const text: UTF8String): real;
var
Bounds: TBoundsDbl;
begin
Bounds := Fonts[ActFont].Font.BBox(Text, true);
Result := Bounds.Right - Bounds.Left;
end;
// Custom GL "Print" Routine
procedure glPrint(const Text: UTF8String);
var
GLFont: PGLFont;
begin
// if there is no text do nothing
if (Text = '') then
Exit;
GLFont := @Fonts[ActFont];
glPushMatrix();
// set font position
glTranslatef(GLFont.X, GLFont.Y + GLFont.Font.Ascender, GLFont.Z);
// draw string
GLFont.Font.Print(Text);
glPopMatrix();
end;
procedure ResetFont();
begin
SetFontPos(0, 0);
SetFontZ(0);
SetFontItalic(False);
SetFontReflection(False, 0);
end;
procedure SetFontPos(X, Y: real);
begin
Fonts[ActFont].X := X;
Fonts[ActFont].Y := Y;
end;
procedure SetFontZ(Z: real);
begin
Fonts[ActFont].Z := Z;
end;
procedure SetFontSize(Size: real);
begin
Fonts[ActFont].Font.Height := Size;
end;
procedure SetFontStyle(Style: integer);
begin
ActFont := Style;
end;
procedure SetFontItalic(Enable: boolean);
begin
if (Enable) then
Fonts[ActFont].Font.Style := Fonts[ActFont].Font.Style + [Italic]
else
Fonts[ActFont].Font.Style := Fonts[ActFont].Font.Style - [Italic]
end;
procedure SetFontReflection(Enable: boolean; Spacing: real);
begin
if (Enable) then
Fonts[ActFont].Font.Style := Fonts[ActFont].Font.Style + [Reflect]
else
Fonts[ActFont].Font.Style := Fonts[ActFont].Font.Style - [Reflect];
Fonts[ActFont].Font.ReflectionSpacing := Spacing - Fonts[ActFont].Font.Descender;
end;
end.
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