cdk_matrix(3)cdk_matrix(3)NAMEcdk_matrix - curses matrix widget.
SYNOPSIS
cc [ flag ... ] file ... -lcdk [ library ... ]
#include <cdk.h>
int activateCDKMatrix (
CDKMATRIX *matrix,
chtype * actions);
void cleanCDKMatrix (
CDKMATRIX *matrix);
void cleanCDKMatrixCell (
CDKMATRIX *matrix,
int row,
int col);
void destroyCDKMatrix (
CDKMATRIX *matrix);
void drawCDKMatrix (
CDKMATRIX *matrix,
boolean box);
void eraseCDKMatrix (
CDKMATRIX *matrix);
boolean getCDKMatrixBox (
CDKMENTRY *matrix);
char * getCDKMatrixCell (
CDKMATRIX *matrix,
int row,
int col);
int getCDKMatrixCol (
CDKMENTRY *matrix);
int getCDKMatrixRow (
CDKMENTRY *matrix);
int injectCDKMatrix (
CDKMATRIX *matrix,
chtype input);
int jumpToCell (
CDKMATRIX *matrix,
int row,
int col);
void moveCDKMatrix (
CDKMATRIX *matrix,
int xpos,
int ypos,
boolean relative,
boolean refresh);
int moveToCDKMatrixCell (
CDKMATRIX *matrix,
int row,
int col);
CDKMATRIX *newCDKMatrix (
CDKSCREEN *cdkscreen,
int xpos,
int ypos,
int screenRows,
int screenCols,
int actualRows,
int actualCols,
const char *title,
CDK_CONST char **rowTitles,
CDK_CONST char **colTitles,
int *columnWidths,
int *columnTypes,
int rowSpace,
int colSpace,
chtype filler,
int dominantAttribute,
boolean boxMatrix,
boolean boxCell,
boolean shadow);
void positionCDKMatrix (
CDKMATRIX *matrix);
void setCDKMatrix (
CDKMATRIX *matrix,
char *info[MAX_MATRIX_ROWS][MAX_MATRIX_COLS],
int rows,
int *columnLengths);
void setCDKMatrixBackgroundAttrib (
CDKMATRIX *matrix,
chtype attribute);
void setCDKMatrixBackgroundColor (
CDKMATRIX *matrix,
const char * color);
void setCDKMatrixBox (
CDKMENTRY *matrix,
boolean boxWidget);
void setCDKMatrixBoxAttribute (
CDKMATRIX *matrix,
chtype character);
void setCDKMatrixCB (
CDKMATRIX *matrix,
MATRIXCB callbackFunction);
int setCDKMatrixCell (
CDKMATRIX *matrix,
int row,
int col,
const char *value);
void setCDKMatrixCells (
CDKMATRIX *matrix,
CDK_CONST char **info,
int rows,
int cols,
int *columnLengths);
void setCDKMatrixHorizontalChar (
CDKMATRIX *matrix,
chtype character);
void setCDKMatrixLLChar (
CDKMATRIX *matrix,
chtype character);
void setCDKMatrixLRChar (
CDKMATRIX *matrix,
chtype character);
void setCDKMatrixPostProcess (
CDKMATRIX *matrix,
PROCESSFN callback,
void * data);
void setCDKMatrixPreProcess (
CDKMATRIX *matrix,
PROCESSFN callback,
void * data);
void setCDKMatrixULChar (
CDKMATRIX *matrix,
chtype character);
void setCDKMatrixURChar (
CDKMATRIX *matrix,
chtype character);
void setCDKMatrixVerticalChar (
CDKMATRIX *matrix,
chtype character);
DESCRIPTION
The Cdk matrix widget creates a matrix widget. The following are func‐
tions which create or manipulate the Cdk matrix box widget.
AVAILABLE FUNCTIONS
activateCDKMatrix
activates the matrix widget and lets the user interact with the
widget. The parameter matrix is a pointer to a non-NULL matrix
widget. If the actions parameter is passed with a non-NULL value,
the characters in the array will be injected into the widget. To
activate the widget interactively pass in a NULL pointer for
actions. If the character entered into this widget is RETURN then
this function will return 1. It will also set the widget data
exitType to vNORMAL. If the character entered into this widget
was ESCAPE then the widget will return a value of -1 and the wid‐
get data exitType will be set to vESCAPE_HIT. The matrix cell
contents can be retrieved by using the info array of the matrix
widget.
cleanCDKMatrix
clears the information from all cells of the matrix.
cleanCDKMatrixCell
clears the information from the specified cell of the matrix.
destroyCDKMatrix
removes the widget from the screen and frees memory the object
used.
drawCDKMatrix
draws the matrix widget on the screen. If the box parameter is
true, the widget is drawn with a box.
eraseCDKMatrix
removes the widget from the screen. This does NOT destroy the
widget.
getCDKMatrixBox
returns true if the widget will be drawn with a box around it.
getCDKMatrixCell
returns the contents of the cell located by the row and col pair.
getCDKMatrixCol
returns the current column index.
getCDKMatrixRow
returns the current row index.
injectCDKMatrix
injects a single character into the widget. The parameter matrix
is a pointer to a non-NULL matrix widget. The parameter character
is the character to inject into the widget. The return value and
side-effect (setting the widget data exitType) depend upon the
injected character:
RETURN or TAB
the function returns 1. The widget data exitType is set to
vNORMAL.
ESCAPE the function returns -1. The widget data exitType is set
to vESCAPE_HIT.
Otherwise
unless modified by preprocessing, postprocessing or key
bindings, the function returns -1. The widget data exit‐
Type is set to vEARLY_EXIT.
The matrix cell contents can be retrieved by using the info array
of the matrix widget.
jumpToCell
provides an interactive method of moving to a cell. It pops up a
scale widget and asks which cell the user wants to go to. Then it
performs the jump.
moveCDKMatrix
moves the given widget to the given position. The parameters xpos
and ypos are the new position of the widget. The parameter xpos
may be an integer or one of the pre-defined values TOP, BOTTOM,
and CENTER. The parameter ypos may be an integer or one of the
pre-defined values LEFT, RIGHT, and CENTER. The parameter rela‐
tive states whether the xpos/ypos pair is a relative move or an
absolute move. For example, if xpos = 1 and ypos = 2 and relative
= TRUE, then the widget would move one row down and two columns
right. If the value of relative was FALSE then the widget would
move to the position (1,2). Do not use the values TOP, BOTTOM,
LEFT, RIGHT, or CENTER when relative = TRUE. (weird things may
happen). The final parameter refresh is a boolean value which
states whether the widget will get refreshed after the move.
moveToCDKMatrixCell
jumps to the given cells dictated by the parameters row and col.
It returns a value of TRUE or FALSE depending if the move was suc‐
cessful.
newCDKMatrix
creates a matrix widget and returns a pointer to it. Parameters:
screen
is the screen you wish this widget to be placed in.
xpos controls the placement of the object along the horizontal
axis. It may be an integer or one of the pre-defined values
LEFT, RIGHT, and CENTER.
ypos controls the placement of the object along the vertical axis.
It may be an integer or one of the pre-defined values TOP,
BOTTOM, and CENTER.
screenRows and
screenCols
are the number of rows and columns to be displayed on the
screen respectively.
actualRows and
actualCols
are the number of actual rows and columns the matrix has.
title
is the string which will be displayed at the top of the wid‐
get. The title can be more than one line; just provide a
carriage return character at the line break.
rowTitles and
colTitles
are the titles along the row and columns respectively.
columnWidths
is an array of integers stating how wide the individual col‐
umns are to be.
columnTypes
is an array of integers which correspond to the individual
column display types. The values of the array should be
assigned a value of type EDisplayType. See cdk_display (3)
for legal values of EDisplayType.
rowSpace and
colSpace
dictate how much white space is to be between rows and col‐
umns respectively.
filler
is the character to use in empty space within a cell.
dominantAttribute
states which (the rows or the columns) will have the dominant
character attributes. This is stated when a cell has both a
row attribute and a column attribute. If the value of the
parameter dominantAttribute is set to ROW then the attribute
of the row will be displayed. If it is set to COL then the
column's attributes will be displayed instead.
boxMatrix
is true if the widget should be drawn with a box around it.
boxCell
is true if the individual cells should have boxes drawn
around them.
shadow
turns the shadow on or off around this widget.
If the widget could not be created then a NULL pointer is
returned.
positionCDKMatrix
allows the user to move the widget around the screen via the cur‐
sor/keypad keys. See cdk_position (3) for key bindings.
setCDKMatrix
lets the programmer modify certain elements of an existing matrix
widget. The parameter info is an array of char * which contains
the cell information. The parameter rows has the number of rows
the parameter info contains, while columnLengths has the lengths
of the individual columns in info.
Do not use this function. It is obsolete, provided only for com‐
patibility with older versions of CDK. Use setCDKMatrixCells.
setCDKMatrixBackgroundAttrib
sets the background attribute of the widget. The parameter
attribute is a curses attribute, e.g., A_BOLD.
setCDKMatrixBackgroundColor
sets the background color of the widget. The parameter color is
in the format of the Cdk format strings. See cdk_display (3).
setCDKMatrixBox
sets whether the widget will be drawn with a box around it.
setCDKMatrixBoxAttribute
sets the attribute of the box.
setCDKMatrixCB
allows the programmer to set a different widget input handler.
The parameter callbackFunction is of type MATRIXCB. The default
function is CDKMatrixCallBack.
setCDKMatrixCell
sets the contents of the cell located by the row and col pair.
The value of the cell will be set to value.
setCDKMatrixCells,
lets the programmer initialize elements of an existing matrix wid‐
get. The parameter info is an array of char * which contains the
cell information. The parameter rows has the number of rows The
parameter cols has the number of columns the parameter info con‐
tains, while columnLengths has the lengths of the individual col‐
umns in info.
setCDKMatrixHorizontalChar
sets the horizontal drawing character for the box to the given
character.
setCDKMatrixLLChar
sets the lower left hand corner of the widget's box to the given
character.
setCDKMatrixLRChar
sets the lower right hand corner of the widget's box to the given
character.
setCDKMatrixPostProcess
allows the user to have the widget call a function after the key
has been applied to the widget. The parameter function is the
callback function. The parameter data points to data passed to
the callback function. To learn more about post-processing see
cdk_process (3).
setCDKMatrixPreProcess
allows the user to have the widget call a function after a key is
hit and before the key is applied to the widget. The parameter
function is the callback function. The parameter data points to
data passed to the callback function. To learn more about pre-
processing see cdk_process (3).
setCDKMatrixULChar
sets the upper left hand corner of the widget's box to the given
character.
setCDKMatrixURChar
sets the upper right hand corner of the widget's box to the given
character.
setCDKMatrixVerticalChar
sets the vertical drawing character for the box to the given char‐
acter.
KEY BINDINGS
When the widget is activated there are several default key bindings
which will help the user enter or manipulate the information quickly.
The following table outlines the keys and their actions for this wid‐
get.
┌───────────────────────────────────────────────────────────┐
│Key Action │
├───────────────────────────────────────────────────────────┤
│Left Arrow Moves one cell to the left. │
│Right Arrow Moves the cell to the right. │
│Tab Moves the cell to the right. │
│Up Arrow Moves one cell up. │
│Down Arrow Moves one cell down. │
│Next Page Moves one page forward. │
│Ctrl-F Moves one page forward. │
│Prev Page Moves one page backward. │
│Ctrl-B Moves one page backward. │
│Ctrl-G Calls the function jumpToCell and │
│ requests which cell the user wishes to │
│ jump to. │
│Ctrl-P Pastes whatever is in the paste buffer, │
│ into the current cell. │
│Ctrl-K Cuts the contents from the current cell │
│ and saves a copy in the paste buffer. │
│Ctrl-T Copies the contents of the current cell │
│ into the paste buffer. │
│Ctrl-E Erases the contents of the current cell. │
│Delete Deletes the character before the cursor, │
│ moves cursor left. There is no function │
│ to delete the character at the cursor │
│ since there are no functions for moving │
│ the cursor within the edited text. │
│Backspace Deletes the character before cursor, │
│ moves cursor left. │
│Ctrl-H Deletes the character before the cursor. │
│Return Exits the widget and returns 1. This │
│ also sets the widget data exitType to │
│ vNORMAL. │
│Escape Exits the widget and returns -1. This │
│ also sets the widget data exitType to │
│ vESCAPE_HIT. │
│Ctrl-L Refreshes the screen. │
└───────────────────────────────────────────────────────────┘
SEE ALSOcdk(3), cdk_binding(3), cdk_display(3), cdk_position(3), cdk_screen(3)cdk_matrix(3)
