BGRABitmap Types imported from Graphics
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Back to BGRABitmap.
Here is the list of types in BGRAGraphics unit. They are imported from the LCL unit called Graphics. They are imported by BGRABitmapTypes unit so that you don't need to add explicitely this unit to the uses clause.
If the LCL is not present, those types are defined to provide their basic features.
Types imported from Graphics
| PColor = ^TColor; | ||
| Pointer to a TColor value. TColor contains a color stored as RGB. The red/green/blue values range from 0 to 255. The formula to get the color value is: color = red + (green shl 8) + (blue shl 16) except with fpGUI where it is: color = (red shl 16) + (green shl 8) + blue | ||
| function FPColorToTColor(const FPColor: TFPColor): TColor; | ||
| Converts a TFPColor into a TColor value | ||
| function TColorToFPColor(const c: TColor): TFPColor; | ||
| Converts a TColor into a TFPColor value | ||
| TGradientDirection = ( | ||
| Direction of change in a gradient | ||
| gdVertical, | ||
| Color changes vertically | ||
| gdHorizontal); | ||
| Color changes horizontally | ||
| TAntialiasingMode = ( | ||
| Antialiasing mode for a Canvas | ||
| amDontCare, | ||
| It does not matter if there is antialiasing or not | ||
| amOn, | ||
| Antialiasing is required (BGRACanvas provide it) | ||
| amOff); | ||
| Antialiasing is disabled | ||
| TTextLayout = (tlTop, tlCenter, tlBottom); | ||
| Vertical position of a text | ||
| TTextStyle = packed record | ||
| Styles to describe how a text is drawn in a rectangle | ||
| Alignment : TAlignment; | ||
| Horizontal alignment | ||
| Layout : TTextLayout; | ||
| Vertical alignment | ||
| SingleLine: boolean; | ||
| If WordBreak is false then process #13, #10 as standard chars and perform no Line breaking | ||
| Clipping : boolean; | ||
| Clip Text to passed Rectangle | ||
| ExpandTabs: boolean; | ||
| Replace #9 by apropriate amount of spaces (default is usually 8) | ||
| ShowPrefix: boolean; | ||
| Process first single '&' per line as an underscore and draw '&&' as '&' | ||
| Wordbreak : boolean; | ||
| If line of text is too long too fit between left and right boundaries try to break into multiple lines between words. See also EndEllipsis | ||
| Opaque : boolean; | ||
| Fills background with current brush | ||
| SystemFont: Boolean; | ||
| Use the system font instead of canvas font | ||
| RightToLeft: Boolean; | ||
| For RightToLeft text reading (Text Direction) | ||
| EndEllipsis: Boolean; | ||
| If line of text is too long to fit between left and right boundaries truncates the text and adds "...". If Wordbreak is set as well, Workbreak will dominate | ||
| TFillStyle = | ||
| Option for floodfill (used in BGRACanvas) | ||
| fsSurface, | ||
| Fill up to the color (it fills all except the specified color) | ||
| fsBorder | ||
| Fill the specified color (it fills only connected pixels of this color) | ||
| TFillMode = ( | ||
| How to handle polygons that intersect with themselves and overlapping polygons | ||
| fmAlternate, | ||
| Each time a boundary is found, it enters or exit the filling zone | ||
| fmWinding); | ||
| Adds or subtract 1 depending on the order of the points of the polygons (clockwise or counter clockwise) and fill when the result is non-zero. So, to draw a hole, you must specify the points of the hole in the opposite order | ||
| TFontStyle = ( | ||
| Available font styles | ||
| fsBold, | ||
| Font is bold | ||
| fsItalic, | ||
| Font is italic | ||
| fsStrikeOut, | ||
| An horizontal line is drawn in the middle of the text | ||
| fsUnderline); | ||
| Text is underlined | ||
| TFontStyles = set of TFontStyle; | ||
| A combination of font styles | ||
| TFontQuality = (fqDefault, fqDraft, fqProof, fqNonAntialiased, fqAntialiased, fqCleartype, fqCleartypeNatural); | ||
| Quality to use when font is rendered by the system | ||
| TCanvas = class | ||
| A surface on which to draw | ||
| procedure Draw(x,y: integer; AImage: TGraphic); | ||
| Draw an image with top-left corner at (x, y) | ||
| procedure StretchDraw(ARect: TRect; AImage: TGraphic); | ||
| Draw and stretch an image within the rectangle ARect | ||
| TGraphic = class(TPersistent) | ||
| A class containing any element that can be drawn within rectangular bounds | ||
| procedure LoadFromFile(const Filename: string); virtual; | ||
| Load the content from a given file | ||
| procedure LoadFromStream(Stream: TStream); virtual; abstract; | ||
| Load the content from a given stream | ||
| procedure SaveToFile(const Filename: string); virtual; | ||
| Saves the content to a file | ||
| procedure SaveToStream(Stream: TStream); virtual; abstract; | ||
| Saves the content into a given stream | ||
| class function GetFileExtensions: string; virtual; | ||
| Returns the list of possible file extensions | ||
| procedure Clear; virtual; | ||
| Clears the content | ||
| property Empty: Boolean read GetEmpty; | ||
| Returns if the content is completely empty | ||
| property Height: Integer read GetHeight write SetHeight; | ||
| Returns the height of the bounding rectangle | ||
| property Width: Integer read GetWidth write SetWidth; | ||
| Returns the width of the bounding rectangle | ||
| property Transparent: Boolean read GetTransparent write SetTransparent; | ||
| Gets or sets if it is drawn with transparency | ||
| TBitmap = class(TGraphic) | ||
| Contains a bitmap | ||
| property Width: integer read GetWidth write SetWidth; | ||
| Width of the bitmap in pixels | ||
| property Height: integer read GetHeight write SetHeight; | ||
| Height of the bitmap in pixels | ||
| function MulDiv(nNumber, nNumerator, nDenominator: Integer): Integer; | ||
| Multiply and divide the number allowing big intermediate number and rounding the result | ||
| function MathRound(AValue: ValReal): Int64; inline; | ||
| Round the number using math convention | ||
