Unit BGRAText
Description
Base implementation of system text rendering.
This unit provides basic text rendering functions using system renderer (LCL or MSEgui).
Text functions use a temporary bitmap where the operating system text drawing is used. Then it is scaled down (if antialiasing is activated) and colored.
These routines are rather slow, so you may use other font renderers like TBGRATextEffectFontRenderer in BGRATextFX if you want to use LCL fonts, or, if you have TrueType fonts files, you may use TBGRAFreeTypeFontRenderer in BGRAFreeType.
Font rendering units : BGRAText, BGRATextFX, BGRAVectorize, BGRAFreeType
Uses
Overview
Classes, Interfaces, Objects and Records
| Name | Description |
|---|---|
Class TBGRASystemFontRenderer |
Font renderer using system rendering (LCL, mseGUI). |
Class TMSEFontRenderer |
Font renderer using MSE calls to the operating system |
Functions and Procedures
procedure BGRAFillClearTypeGrayscaleMask(dest: TBGRACustomBitmap; x,y: integer; xThird: integer; mask: TGrayscaleMask; color: TBGRAPixel; texture: IBGRAScanner = nil; RGBOrder: boolean=true); |
procedure BGRAFillClearTypeMask(dest: TBGRACustomBitmap; x,y: integer; xThird: integer; mask: TBGRACustomBitmap; color: TBGRAPixel; texture: IBGRAScanner = nil; RGBOrder: boolean=true); |
procedure BGRAFillClearTypeRGBMask(dest: TBGRACustomBitmap; x,y: integer; mask: TBGRACustomBitmap; color: TBGRAPixel; texture: IBGRAScanner = nil; KeepRGBOrder: boolean=true); |
function BGRAOriginalTextSize(Font: TFont; Quality: TBGRAFontQuality; sUTF8: string; CustomAntialiasingLevel: integer): TSize; |
function BGRAOriginalTextSizeAngle(Font: TFont; AOrientation: integer; Quality: TBGRAFontQuality; sUTF8: string; CustomAntialiasingLevel: Integer): TSize; |
function BGRAOriginalTextSizeEx(Font: TFont; Quality: TBGRAFontQuality; sUTF8: string; CustomAntialiasingLevel: Integer; out actualAntialiasingLevel: integer; out extraVerticalMarginDueToRotation: integer): TSize; |
function BGRAOriginalTextSizeExAngle(Font: TFont; AOrientation: integer; Quality: TBGRAFontQuality; sUTF8: string; CustomAntialiasingLevel: Integer; out actualAntialiasingLevel: integer; out extraVerticalMarginDueToRotation: integer): TSize; |
function BGRATextFitInfo(Font: TFont; Quality: TBGRAFontQuality; sUTF8: string; CustomAntialiasingLevel: Integer; AMaxWidth: integer): integer; |
function BGRATextFitInfoAngle(Font: TFont; AOrientation: integer; Quality: TBGRAFontQuality; sUTF8: string; CustomAntialiasingLevel: Integer; AMaxWidth: integer): integer; |
procedure BGRATextOut(bmp: TBGRACustomBitmap; Font: TFont; Quality: TBGRAFontQuality; xf, yf: single; sUTF8: string; c: TBGRAPixel; tex: IBGRAScanner; align: TAlignment; CustomAntialiasingLevel: Integer = 0; ShowPrefix: boolean = false; RightToLeft: boolean = false); |
procedure BGRATextOutAngle(bmp: TBGRACustomBitmap; Font: TFont; Quality: TBGRAFontQuality; xf, yf: single; orientationTenthDegCCW: integer; sUTF8: string; c: TBGRAPixel; tex: IBGRAScanner; align: TAlignment; CustomAntialiasingLevel: Integer = 0); |
procedure BGRATextRect(bmp: TBGRACustomBitmap; Font: TFont; Quality: TBGRAFontQuality; ARect: TRect; xf, yf: single; sUTF8: string; style: TTextStyle; c: TBGRAPixel; tex: IBGRAScanner; CustomAntialiasingLevel: Integer = 0); |
function BGRATextSize(Font: TFont; Quality: TBGRAFontQuality; sUTF8: string; CustomAntialiasingLevel: Integer): TSize; |
function BGRATextSizeAngle(Font: TFont; AOrientation: integer; Quality: TBGRAFontQuality; sUTF8: string; CustomAntialiasingLevel: Integer): TSize; |
function BGRATextStrikeOut(ATopLeft: TPointF; AWidth: Single; AMetrics: TFontPixelMetric): ArrayOfTPointF; overload; |
function BGRATextStrikeOut(ATopLeft: TPointF; AWidth: Single; ABaseline, AEmHeight, AXHeight: single): ArrayOfTPointF; overload; |
function BGRATextUnderline(ATopLeft: TPointF; AWidth: Single; AMetrics: TFontPixelMetric): ArrayOfTPointF; overload; |
function BGRATextUnderline(ATopLeft: TPointF; AWidth: Single; ABaseline, AEmHeight: single): ArrayOfTPointF; overload; |
procedure BitmapFillRect(ABitmap: TBitmap; ARect: TRect; AColor: TColor); |
function BitmapTextExtent(ABitmap: TBitmap; AText: string): TSize; |
function BitmapTextExtentAngle(ABitmap: TBitmap; AText: string; AOrientation: integer): TSize; |
function BitmapTextFitInfo(ABitmap: TBitmap; AText: string; AMaxWidth: integer): integer; |
function BitmapTextFitInfoAngle(ABitmap: TBitmap; AText: string; AMaxWidth: integer; AOrientation: integer): integer; |
procedure BitmapTextOut(ABitmap: TBitmap; ACoord: TPoint; AText: string); |
procedure BitmapTextOutAngle(ABitmap: TBitmap; ACoord: TPoint; AText: string; AOrientation: integer); |
procedure BitmapTextRect(ABitmap: TBitmap; ARect: TRect; ACoord: TPoint; AText: string; const AStyle: TTextStyle); |
function CleanTextOutString(s: string): string; |
function FixSystemFontFullHeight(AFontName: string; AFontHeight: integer): integer; |
function FontEmHeightSign: integer; |
function FontFullHeightSign: integer; |
function GetFineClearTypeAuto: TBGRAFontQuality; |
function GetFontHeightSign: integer; |
function GetLCLFontPixelMetric(AFont: TFont): TFontPixelMetric; |
function RemoveLineEnding(var s: string; indexByte: integer): boolean; |
function RemoveLineEndingUTF8(var sUTF8: string; indexUTF8: integer): boolean; |
function SystemFontAvailable: boolean; |
Types
TWordBreakHandler = BGRABitmapTypes.TWordBreakHandler; |
Constants
FontAntialiasingLevel = 3; |
FontDefaultQuality = fqAntialiased; |
IsLclFontRendererFine = true; |
RenderTextOnBitmap = true; |
Variables
BGRATextOutImproveReadabilityProc: procedure(bmp: TBGRACustomBitmap; AFont: TFont; xf,yf: single; text: string; color: TBGRAPixel; tex: IBGRAScanner; align: TAlignment; mode : TBGRATextOutImproveReadabilityMode); |
Description
Functions and Procedures
procedure BGRAFillClearTypeGrayscaleMask(dest: TBGRACustomBitmap; x,y: integer; xThird: integer; mask: TGrayscaleMask; color: TBGRAPixel; texture: IBGRAScanner = nil; RGBOrder: boolean=true); |
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procedure BGRAFillClearTypeMask(dest: TBGRACustomBitmap; x,y: integer; xThird: integer; mask: TBGRACustomBitmap; color: TBGRAPixel; texture: IBGRAScanner = nil; RGBOrder: boolean=true); |
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procedure BGRAFillClearTypeRGBMask(dest: TBGRACustomBitmap; x,y: integer; mask: TBGRACustomBitmap; color: TBGRAPixel; texture: IBGRAScanner = nil; KeepRGBOrder: boolean=true); |
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function BGRAOriginalTextSize(Font: TFont; Quality: TBGRAFontQuality; sUTF8: string; CustomAntialiasingLevel: integer): TSize; |
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function BGRAOriginalTextSizeAngle(Font: TFont; AOrientation: integer; Quality: TBGRAFontQuality; sUTF8: string; CustomAntialiasingLevel: Integer): TSize; |
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function BGRAOriginalTextSizeEx(Font: TFont; Quality: TBGRAFontQuality; sUTF8: string; CustomAntialiasingLevel: Integer; out actualAntialiasingLevel: integer; out extraVerticalMarginDueToRotation: integer): TSize; |
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function BGRAOriginalTextSizeExAngle(Font: TFont; AOrientation: integer; Quality: TBGRAFontQuality; sUTF8: string; CustomAntialiasingLevel: Integer; out actualAntialiasingLevel: integer; out extraVerticalMarginDueToRotation: integer): TSize; |
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function BGRATextFitInfo(Font: TFont; Quality: TBGRAFontQuality; sUTF8: string; CustomAntialiasingLevel: Integer; AMaxWidth: integer): integer; |
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function BGRATextFitInfoAngle(Font: TFont; AOrientation: integer; Quality: TBGRAFontQuality; sUTF8: string; CustomAntialiasingLevel: Integer; AMaxWidth: integer): integer; |
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procedure BGRATextOut(bmp: TBGRACustomBitmap; Font: TFont; Quality: TBGRAFontQuality; xf, yf: single; sUTF8: string; c: TBGRAPixel; tex: IBGRAScanner; align: TAlignment; CustomAntialiasingLevel: Integer = 0; ShowPrefix: boolean = false; RightToLeft: boolean = false); |
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procedure BGRATextOutAngle(bmp: TBGRACustomBitmap; Font: TFont; Quality: TBGRAFontQuality; xf, yf: single; orientationTenthDegCCW: integer; sUTF8: string; c: TBGRAPixel; tex: IBGRAScanner; align: TAlignment; CustomAntialiasingLevel: Integer = 0); |
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procedure BGRATextRect(bmp: TBGRACustomBitmap; Font: TFont; Quality: TBGRAFontQuality; ARect: TRect; xf, yf: single; sUTF8: string; style: TTextStyle; c: TBGRAPixel; tex: IBGRAScanner; CustomAntialiasingLevel: Integer = 0); |
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function BGRATextSize(Font: TFont; Quality: TBGRAFontQuality; sUTF8: string; CustomAntialiasingLevel: Integer): TSize; |
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function BGRATextSizeAngle(Font: TFont; AOrientation: integer; Quality: TBGRAFontQuality; sUTF8: string; CustomAntialiasingLevel: Integer): TSize; |
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function BGRATextStrikeOut(ATopLeft: TPointF; AWidth: Single; AMetrics: TFontPixelMetric): ArrayOfTPointF; overload; |
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function BGRATextStrikeOut(ATopLeft: TPointF; AWidth: Single; ABaseline, AEmHeight, AXHeight: single): ArrayOfTPointF; overload; |
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function BGRATextUnderline(ATopLeft: TPointF; AWidth: Single; AMetrics: TFontPixelMetric): ArrayOfTPointF; overload; |
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function BGRATextUnderline(ATopLeft: TPointF; AWidth: Single; ABaseline, AEmHeight: single): ArrayOfTPointF; overload; |
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procedure BitmapFillRect(ABitmap: TBitmap; ARect: TRect; AColor: TColor); |
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function BitmapTextExtent(ABitmap: TBitmap; AText: string): TSize; |
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function BitmapTextExtentAngle(ABitmap: TBitmap; AText: string; AOrientation: integer): TSize; |
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function BitmapTextFitInfo(ABitmap: TBitmap; AText: string; AMaxWidth: integer): integer; |
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function BitmapTextFitInfoAngle(ABitmap: TBitmap; AText: string; AMaxWidth: integer; AOrientation: integer): integer; |
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procedure BitmapTextOut(ABitmap: TBitmap; ACoord: TPoint; AText: string); |
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procedure BitmapTextOutAngle(ABitmap: TBitmap; ACoord: TPoint; AText: string; AOrientation: integer); |
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procedure BitmapTextRect(ABitmap: TBitmap; ARect: TRect; ACoord: TPoint; AText: string; const AStyle: TTextStyle); |
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function CleanTextOutString(s: string): string; |
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function FixSystemFontFullHeight(AFontName: string; AFontHeight: integer): integer; |
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function FontEmHeightSign: integer; |
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function FontFullHeightSign: integer; |
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function GetFineClearTypeAuto: TBGRAFontQuality; |
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function GetFontHeightSign: integer; |
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function GetLCLFontPixelMetric(AFont: TFont): TFontPixelMetric; |
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function RemoveLineEnding(var s: string; indexByte: integer): boolean; |
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this works with UTF8 strings as well |
function RemoveLineEndingUTF8(var sUTF8: string; indexUTF8: integer): boolean; |
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this works with UTF8 strings however the index is the byte index |
function SystemFontAvailable: boolean; |
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Types
TWordBreakHandler = BGRABitmapTypes.TWordBreakHandler; |
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Constants
FontAntialiasingLevel = 3; |
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FontDefaultQuality = fqAntialiased; |
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IsLclFontRendererFine = true; |
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RenderTextOnBitmap = true; |
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Variables
BGRATextOutImproveReadabilityProc: procedure(bmp: TBGRACustomBitmap; AFont: TFont; xf,yf: single; text: string; color: TBGRAPixel; tex: IBGRAScanner; align: TAlignment; mode : TBGRATextOutImproveReadabilityMode); |
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