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https://gitlab.com/freepascal.org/lazarus/lazarus.git
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128 lines
3.0 KiB
ObjectPascal
128 lines
3.0 KiB
ObjectPascal
{
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*****************************************************************************
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See the file COPYING.modifiedLGPL.txt, included in this distribution,
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for details about the license.
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*****************************************************************************
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Author: Werner Pamler
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- If LazFreeType does not find the fonts needed call InitFonts at the beginning
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of the program and specify the path to the font folder as a parameter.
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Several folders can be used if separated by LineEnding codes.
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}
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unit TAFonts;
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{$mode objfpc}{$H+}
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interface
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uses
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SysUtils, Classes, EasyLazFreeType;
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procedure InitFonts(AFontDir: string = '');
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function LoadFont(AFontName: String; AStyle: TFreeTypeStyles): TFreeTypeFont;
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implementation
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uses
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FileUtil, LazFileUtils, LazFreeTypeFontCollection;
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var
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FontsInitialized: Boolean = false;
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procedure PopulateFontDirList(AList: TStrings);
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const
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CSIDL_FONTS = 20;
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var
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s: String;
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begin
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if AList = nil then
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raise Exception.Create('PopulateFontDirList: list not allocated.');
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{$IFDEF WINDOWS}
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s := SHGetFolderPathUTF8(CSIDL_FONTS);
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if s <> '' then
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AList.Add(s);
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{$ENDIF}
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{$IFDEF linux}
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AList.Add('/usr/share/cups/fonts/');
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AList.Add('/usr/share/fonts/truetype/');
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AList.Add('/usr/local/lib/X11/fonts/');
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AList.Add(GetUserDir + '.fonts/');
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{$ENDIF}
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end;
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function LoadFont(AFontName: String; AStyle: TFreeTypeStyles): TFreeTypeFont;
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var
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familyItem: TCustomFamilyCollectionItem;
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fontItem: TCustomFontCollectionItem;
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style: String;
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begin
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Result := nil;
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familyItem := FontCollection.Family[AFontName];
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if familyItem <> nil then begin
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style := '';
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if (ftsBold in AStyle) then style := 'Bold';
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if (ftsItalic in AStyle) then style := style + ' Italic';
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fontItem := familyItem.GetFont(style);
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if fontItem <> nil then begin
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Result := fontItem.CreateFont;
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Result.Style := AStyle;
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end;
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end;
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end;
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procedure InitFonts(AFontDir: String = '');
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{ Duplicates functionality in FontCollection.AddFolder in order to be able to
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ignore exceptions due to font read errors (occur on Linux Mint with font
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NanumMyeongjo.ttf) }
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procedure AddFolder(AFolder: string);
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var
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files: TStringList;
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i: integer;
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begin
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AFolder := ExpandFileName(AFolder);
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if (length(AFolder) <> 0) and (AFolder[length(AFolder)] <> PathDelim) then
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AFolder += PathDelim;
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files := TStringList.Create;
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FontCollection.BeginUpdate;
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try
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FindAllFiles(files, AFolder, '*.ttf', true);
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files.Sort;
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for i := 0 to files.Count-1 do
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try
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FontCollection.AddFile(files[i]);
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except
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end;
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finally
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FontCollection.EndUpdate;
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files.Free;
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end;
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end;
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var
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i: Integer;
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fontDirList: TStrings;
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begin
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if FontsInitialized then
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exit;
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fontDirList := TStringList.Create;
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try
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PopulateFontDirList(fontDirList);
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if AFontDir <> '' then
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fontDirList.Text := AFontDir;
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for i:=0 to fontDirList.Count-1 do
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AddFolder(fontDirList[i]);
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FontsInitialized := true;
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finally
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fontDirList.Free;
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end;
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end;
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end.
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