TImagingCanvas Class Members

Members

Methods

AdjustColorLevels	Adjusts the color levels of the image by scaling the colors falling between specified white and black points to full [0, 1] range.
ApplyConvolution	Computes 2D convolution of canvas' image and given filter kernel.
ApplyConvolution3x3	Convolves canvas' image with given 3x3 filter kernel.
ApplyConvolution5x5	Convolves canvas' image with given 5x5 filter kernel.
ApplyMaxFilter	Applies max non-linear filter with user defined pixel neighborhood.
ApplyMedianFilter	Applies median non-linear filter with user defined pixel neighborhood.
ApplyMinFilter	Applies min non-linear filter with user defined pixel neighborhood.
ApplyNonLinearFilter	Applies custom non-linear filter.
Clear	Clears entire canvas with current fill color (ignores clipping rectangle and always uses fmSolid fill mode).
CreateForData	This is CreateForData, a member of class TImagingCanvas.
CreateForImage	This is CreateForImage, a member of class TImagingCanvas.
Destroy	This is Destroy, a member of class TImagingCanvas.
DrawAdd	Draws contents of this canvas onto another one using additive blending (source and dest factors are bfOne).
DrawAlpha	Draws contents of this canvas onto another one with typical alpha blending (Src 'over' Dest, factors are bfSrcAlpha and bfOneMinusSrcAlpha.)
DrawBlend	Draws contents of this canvas onto another canvas with pixel blending.
Ellipse	Draws ellipse which is outlined by using the current pen settings and filled by using the current fill settings.
FillChannel	Fills image channel with given value leaving other channels intact.
FillChannelFP	Fills image channel with given value leaving other channels intact.
FillRect	Fills given rectangle with current fill settings.
FillRectBlend	Fills given rectangle with current fill settings and pixel blending.
FloodFill	Fills area of canvas with current fill color starting at point [X, Y] and coloring its neighbors.
FrameRect	Draws a rectangle using current pen settings.
GammaCorection	Gamma correction of individual color channels.
GetHistogram	Calculates image histogram for each channel and also gray values.
GetSupportedFormats	Returns all formats supported by this canvas class.
HorzLine	Draws horizontal line with current pen settings.
InvertColors	Inverts colors of all image pixels, makes negative image.
Line	Draws line from [X1, Y1] to [X2, Y2] with current pen settings.
ModifyContrastBrightness	Modifies image contrast and brightness.
PointTransform	Transforms pixels one by one by given function.
PremultiplyAlpha	Premultiplies color channel values by alpha.
Rectangle	Draws rectangle which is outlined by using the current pen settings and filled by using the current fill settings.
ResetClipRect	Resets clipping rectangle to Rect(0, 0, ImageWidth, ImageHeight).
StretchDrawAdd	Draws contents of this canvas onto another one using additive blending (source and dest factors are bfOne).
StretchDrawAlpha	Draws contents of this canvas onto another one with typical alpha blending (Src 'over' Dest, factors are bfSrcAlpha and bfOneMinusSrcAlpha.)
StretchDrawBlend	Draws stretched and filtered contents of this canvas onto another canvas with pixel blending.
Threshold	Simple single level thresholding with threshold level (in range [0, 1]) for each color channel.
UnPremultiplyAlpha	Reverses PremultiplyAlpha operation.
UpdateCanvasState	Call this method when you change size or format of image this canvas operates on (like calling ResizeImage, ConvertImage, or changing Format property of TBaseImage descendants).
VertLine	Draws vertical line with current pen settings.

Properties

ClipRect	Clipping rectangle of this canvas.
FillColor32	Color used for filling when drawing various objects.
FillColorFP	Color used for filling when drawing various objects.
FillMode	Fill mode used when drawing filled objects on canvas.
FormatInfo	Extended format information.
PenColor32	Color used when drawing lines, frames, and outlines of objects.
PenColorFP	Color used when drawing lines, frames, and outlines of objects.
PenMode	Pen mode used when drawing lines, object outlines, and similar on canvas.
PenWidth	Width with which objects like lines, frames, etc.
Pixels32	Specifies the current color of the pixels of canvas.
PixelsFP	Specifies the current color of the pixels of canvas.
Valid	Indicates that this canvas is in valid state.

Legend

	public
	virtual
	read only