diff options
Diffstat (limited to 'cmake/src/base/TextGL.pas')
| -rw-r--r-- | cmake/src/base/TextGL.pas | 393 |
1 files changed, 138 insertions, 255 deletions
diff --git a/cmake/src/base/TextGL.pas b/cmake/src/base/TextGL.pas index c8de4e28..c354a500 100644 --- a/cmake/src/base/TextGL.pas +++ b/cmake/src/base/TextGL.pas @@ -33,304 +33,189 @@ interface {$I switches.inc} -// as long as the transition to freetype is not finished -// use the old implementation -{$IFDEF UseFreetype} - {$INCLUDE TextGLFreetype.pas} -{$ELSE} uses gl, + glext, SDL, + Classes, UTexture, + UFont, + UPath, ULog; -procedure BuildFont; // build our bitmap font -procedure KillFont; // delete the font -function glTextWidth(const text: string): real; // returns text width -procedure glPrint(const text: string); // custom GL "Print" routine +type + PGLFont = ^TGLFont; + TGLFont = record + Font: TScalableFont; + Outlined: boolean; + X, Y, Z: real; + end; + +const + ftNormal = 0; + ftBold = 1; + ftOutline1 = 2; + ftOutline2 = 3; + +var + Fonts: array of TGLFont; + ActFont: integer; + +procedure BuildFonts; // builds all fonts +procedure KillFonts; // deletes all 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 SetFontAspectW(Aspect: real); procedure SetFontReflection(Enable:boolean;Spacing: real); // enables/disables text reflection -//function NextPowerOfTwo(Value: integer): integer; -// Checks if the ttf exists, if yes then a SDL_ttf is returned -//function LoadFont(FileName: PAnsiChar; PointSize: integer):PTTF_Font; -// Does the renderstuff, color is in $ffeecc style -//function RenderText(font: PTTF_Font; Text:PAnsiChar; Color: Cardinal):PSDL_Surface; - -type - TTextGL = record - X: real; - Y: real; - Z: real; - Text: string; - Size: real; - ColR: real; - ColG: real; - ColB: real; - end; - - PFont = ^TFont; - TFont = record - Tex: TTexture; - Width: array[0..255] of byte; - AspectW: real; - Centered: boolean; - Outline: real; - Italic: boolean; - Reflection: boolean; - ReflectionSpacing: real; - end; - - -var - Fonts: array of TFont; - ActFont: integer; - - implementation uses - Classes, + UTextEncoding, SysUtils, IniFiles, UCommon, - UGraphic, UMain, - UPath; - -var - // Colours for the reflection - TempColor: array[0..3] of GLfloat; + UPathUtils; {** - * Load font info. - * FontFile is the name of the image (.png) not the data (.dat) file + * Returns either Filename if it is absolute or a path relative to FontPath. *} -procedure LoadFontInfo(FontID: integer; const FontFile: string); -var - Stream: TFileStream; - DatFile: string; +function FindFontFile(const Filename: string): IPath; begin - DatFile := ChangeFileExt(FontFile, '.dat'); - FillChar(Fonts[FontID].Width[0], Length(Fonts[FontID].Width), 0); + Result := FontPath.Append(Filename); + // if path does not exist, try as an absolute path + if (not Result.IsFile) then + Result := Path(Filename); +end; - Stream := nil; - try - Stream := TFileStream.Create(DatFile, fmOpenRead); - Stream.Read(Fonts[FontID].Width, 256); - except - Log.LogError('Error while reading font['+ inttostr(FontID) +']', 'LoadFontInfo'); +procedure AddFontFallbacks(FontIni: TMemIniFile; Font: TFont); +var + FallbackFont: IPath; + IdentName: string; + I: Integer; +begin + // evaluate the ini-file's 'Fallbacks' section + for I := 1 to 10 do + begin + IdentName := 'File' + IntToStr(I); + FallbackFont := FindFontFile(FontIni.ReadString('Fallbacks', IdentName, '')); + if (FallbackFont.Equals(PATH_NONE)) then + Continue; + try + Font.AddFallback(FallbackFont); + except + on E: EFontError do + Log.LogError('Setting font fallback ''' + FallbackFont.ToNative() + ''' failed: ' + E.Message); + end; end; - Stream.Free; end; -// Builds bitmap fonts -procedure BuildFont; +const + FONT_NAMES: array [0..3] of string = ( + 'Normal', 'Bold', 'Outline1', 'Outline2' + ); + +procedure BuildFonts; var - Count: integer; + I: integer; FontIni: TMemIniFile; - FontFile: string; // filename of the image (with .png/... ending) + FontFile: IPath; + Outline: single; + Embolden: single; + OutlineFont: TFTScalableOutlineFont; + SectionName: string; begin ActFont := 0; - SetLength(Fonts, 4); - FontIni := TMemIniFile.Create(FontPath + 'fonts.ini'); - - // Normal - - FontFile := FontPath + FontIni.ReadString('Normal', 'File', ''); - - Fonts[0].Tex := Texture.LoadTexture(true, FontFile, TEXTURE_TYPE_TRANSPARENT, 0); - Fonts[0].Tex.H := 30; - Fonts[0].AspectW := 0.9; - Fonts[0].Outline := 0; - - LoadFontInfo(0, FontFile); - - // Bold - - FontFile := FontPath + FontIni.ReadString('Bold', 'File', ''); - - Fonts[1].Tex := Texture.LoadTexture(true, FontFile, TEXTURE_TYPE_TRANSPARENT, 0); - Fonts[1].Tex.H := 30; - Fonts[1].AspectW := 1; - Fonts[1].Outline := 0; - - LoadFontInfo(1, FontFile); - for Count := 0 to 255 do - Fonts[1].Width[Count] := Fonts[1].Width[Count] div 2; - - // Outline1 - - FontFile := FontPath + FontIni.ReadString('Outline1', 'File', ''); - - Fonts[2].Tex := Texture.LoadTexture(true, FontFile, TEXTURE_TYPE_TRANSPARENT, 0); - Fonts[2].Tex.H := 30; - Fonts[2].AspectW := 0.95; - Fonts[2].Outline := 5; - - LoadFontInfo(2, FontFile); - for Count := 0 to 255 do - Fonts[2].Width[Count] := Fonts[2].Width[Count] div 2 + 2; - - // Outline2 + SetLength(Fonts, Length(FONT_NAMES)); - FontFile := FontPath + FontIni.ReadString('Outline2', 'File', ''); - - Fonts[3].Tex := Texture.LoadTexture(true, FontFile, TEXTURE_TYPE_TRANSPARENT, 0); - Fonts[3].Tex.H := 30; - Fonts[3].AspectW := 0.95; - Fonts[3].Outline := 4; - - LoadFontInfo(3, FontFile); - for Count := 0 to 255 do - Fonts[3].Width[Count] := Fonts[3].Width[Count] + 1; + FontIni := TMemIniFile.Create(FontPath.Append('fonts.ini').ToNative); + try + for I := 0 to High(FONT_NAMES) do + begin + SectionName := 'Font_'+FONT_NAMES[I]; + + FontFile := FindFontFile(FontIni.ReadString(SectionName , 'File', '')); + + // create either outlined or normal font + Outline := FontIni.ReadFloat(SectionName, 'Outline', 0.0); + if (Outline > 0.0) then + begin + // outlined font + OutlineFont := TFTScalableOutlineFont.Create(FontFile, 64, Outline); + OutlineFont.SetOutlineColor( + FontIni.ReadFloat(SectionName, 'OutlineColorR', 0.0), + FontIni.ReadFloat(SectionName, 'OutlineColorG', 0.0), + FontIni.ReadFloat(SectionName, 'OutlineColorB', 0.0), + FontIni.ReadFloat(SectionName, 'OutlineColorA', -1.0) + ); + Fonts[I].Font := OutlineFont; + Fonts[I].Outlined := true; + end + else + begin + // normal font + Embolden := FontIni.ReadFloat(SectionName, 'Embolden', 0.0); + Fonts[I].Font := TFTScalableFont.Create(FontFile, 64, Embolden); + Fonts[I].Outlined := false; + end; + + Fonts[I].Font.GlyphSpacing := FontIni.ReadFloat(SectionName, 'GlyphSpacing', 0.0); + Fonts[I].Font.Stretch := FontIni.ReadFloat(SectionName, 'Stretch', 1.0); + + AddFontFallbacks(FontIni, Fonts[I].Font); + end; + except + on E: EFontError 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: string): real; +// Deletes the font +procedure KillFonts; var - Letter: char; - i: integer; - Font: PFont; + I: integer; begin - Result := 0; - Font := @Fonts[ActFont]; - - for i := 1 to Length(text) do - begin - Letter := Text[i]; - Result := Result + Font.Width[Ord(Letter)] * Font.Tex.H / 30 * Font.AspectW; - end; - - if ((Result > 0) and Font.Italic) then - Result := Result + 12 * Font.Tex.H / 60 * Font.AspectW; + for I := 0 to High(Fonts) do + Fonts[I].Font.Free; end; -procedure glPrintLetter(Letter: char); +function glTextWidth(const text: UTF8String): real; var - TexX, TexY: real; - TexR, TexB: real; - TexHeight: real; - FWidth: real; - PL, PT: real; - PR, PB: real; - XItal: real; // X shift for italic type letter - ReflectionSpacing: real; // Distance of the reflection - Font: PFont; - Tex: PTexture; + Bounds: TBoundsDbl; begin - Font := @Fonts[ActFont]; - Tex := @Font.Tex; - - FWidth := Font.Width[Ord(Letter)]; - - Tex.W := FWidth * (Tex.H/30) * Font.AspectW; - - // set texture positions - TexX := (ord(Letter) mod 16) * 1/16 + 1/32 - FWidth/1024 - Font.Outline/1024; - TexY := (ord(Letter) div 16) * 1/16 + 2/1024; - TexR := (ord(Letter) mod 16) * 1/16 + 1/32 + FWidth/1024 + Font.Outline/1024; - TexB := (1 + ord(Letter) div 16) * 1/16 - 2/1024; - - TexHeight := TexB - TexY; - - // set vector positions - PL := Tex.X - Font.Outline * (Tex.H/30) * Font.AspectW /2; - PT := Tex.Y; - PR := PL + Tex.W + Font.Outline * (Tex.H/30) * Font.AspectW; - PB := PT + Tex.H; - - if (not Font.Italic) then - XItal := 0 - else - XItal := 12; - - glEnable(GL_BLEND); - glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); - - glEnable(GL_TEXTURE_2D); - glBindTexture(GL_TEXTURE_2D, Tex.TexNum); - - glBegin(GL_QUADS); - glTexCoord2f(TexX, TexY); glVertex2f(PL+XItal, PT); - glTexCoord2f(TexX, TexB); glVertex2f(PL, PB); - glTexCoord2f(TexR, TexB); glVertex2f(PR, PB); - glTexCoord2f(TexR, TexY); glVertex2f(PR+XItal, PT); - glEnd; - - // <mog> Reflection - // Yes it would make sense to put this in an extra procedure, - // but this works, doesn't take much lines, and is almost lightweight - if Font.Reflection then - begin - ReflectionSpacing := Font.ReflectionSpacing + Tex.H/2; - - glDepthRange(0, 10); - glDepthFunc(GL_LEQUAL); - glEnable(GL_DEPTH_TEST); - - glBegin(GL_QUADS); - glColor4f(TempColor[0], TempColor[1], TempColor[2], 0); - glTexCoord2f(TexX, TexY + TexHeight/2); - glVertex3f(PL, PB + ReflectionSpacing - Tex.H/2, Tex.z); - - glColor4f(TempColor[0], TempColor[1], TempColor[2], Tex.Alpha-0.3); - glTexCoord2f(TexX, TexB ); - glVertex3f(PL + XItal, PT + ReflectionSpacing, Tex.z); - - glTexCoord2f(TexR, TexB ); - glVertex3f(PR + XItal, PT + ReflectionSpacing, Tex.z); - - glColor4f(TempColor[0], TempColor[1], TempColor[2], 0); - glTexCoord2f(TexR, TexY + TexHeight/2); - glVertex3f(PR, PB + ReflectionSpacing - Tex.H/2, Tex.z); - glEnd; - - glDisable(GL_DEPTH_TEST); - end; // reflection - - glDisable(GL_TEXTURE_2D); - glDisable(GL_BLEND); - - Tex.X := Tex.X + Tex.W; - - //write the colour back - glColor4fv(@TempColor); + Bounds := Fonts[ActFont].Font.BBox(Text, true); + Result := Bounds.Right - Bounds.Left; end; // Custom GL "Print" Routine -procedure glPrint(const Text: string); +procedure glPrint(const Text: UTF8String); var - Pos: integer; + GLFont: PGLFont; begin // if there is no text do nothing if (Text = '') then Exit; - //Save the actual color and alpha (for reflection) - glGetFloatv(GL_CURRENT_COLOR, @TempColor); + GLFont := @Fonts[ActFont]; - for Pos := 1 to Length(Text) do - begin - glPrintLetter(Text[Pos]); - end; + glPushMatrix(); + // set font position + glTranslatef(GLFont.X, GLFont.Y + GLFont.Font.Ascender, GLFont.Z); + // draw string + GLFont.Font.Print(Text); + glPopMatrix(); end; procedure ResetFont(); @@ -343,18 +228,18 @@ end; procedure SetFontPos(X, Y: real); begin - Fonts[ActFont].Tex.X := X; - Fonts[ActFont].Tex.Y := Y; + Fonts[ActFont].X := X; + Fonts[ActFont].Y := Y; end; procedure SetFontZ(Z: real); begin - Fonts[ActFont].Tex.Z := Z; + Fonts[ActFont].Z := Z; end; procedure SetFontSize(Size: real); begin - Fonts[ActFont].Tex.H := Size; + Fonts[ActFont].Font.Height := Size; end; procedure SetFontStyle(Style: integer); @@ -364,21 +249,19 @@ end; procedure SetFontItalic(Enable: boolean); begin - Fonts[ActFont].Italic := Enable; -end; - -procedure SetFontAspectW(Aspect: real); -begin - Fonts[ActFont].AspectW := Aspect; + 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 - Fonts[ActFont].Reflection := Enable; - Fonts[ActFont].ReflectionSpacing := Spacing; + 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. - -{$ENDIF} - |