xslice

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Name

xslice, colorbar_image, colorbar_widget - Mix image colors in a palette

Syntax

 #include <xite/Xslice.h>

 void xslice( Widget wid, IMAGE image,
    Colormap map, int planes );

 IMAGE colorbar_image( long xsize, long ysize,
    long low, long high, Visual *visual,
    char *title );

 Widget colorbar_widget( Widget parent,
    char *resource_name,
    char *shell_resource_name, int colortab,
    long xsize, long ysize, long low, long high,
    Visual *visual, int depth, char *title,
    image_callbacks *callbacks );

Description

xslice makes a piecewise constant lookup table (LUT) of pseudocolors. Colors may be mixed in a palette by specifying rgb or ihs values.

colorbar_image returns a BIFF image where each row contains pixel values from low to high, linearly increasing. The image size is determined by xsize (horizontal) and ysize (vertical). The image is one-band if the class of visual is PseudoColor, otherwise it is three-band. If low equals high, the default values 0 and 255 are used for low and high respectively.

colorbar_widget returns a colorbar widget. colortab is an index into the list of available colortables for the images (shown by the "Colors" menu in an image). With a negative value for colortab, a default value equal to the last colortable in the "Colors" menu will be used.

Buttons

Send colortable to xshow: Send LUT back to xshow
Send colortable to file: Save LUT in a file
Load original colortable: Load the colortable which the corresponding image used when the slice application was started
Load colortable from file: Read LUT from file
Set patch in color range: Select a color index-range to fill with the color in the palette

Actions

The following actions may be invoked in the colorfield in the bottom of the slice window.

<Btn1Down>: Fill LUT and colorfield at cursor position with the palette color. This will most likely influence the image.
<Btn2Down>: Set the palette color equal to the LUT value at the cursor position. This will influence the color palette.
<Btn3Down>: Replace a constant part of LUT values at the cursor position with the palette color.
Drag <Btn>: Same as <Btn1Down>

xslice

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