cdk_matrix - curses matrix widget.
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);
The Cdk matrix widget creates a matrix widget. The following are functions which
create or manipulate the Cdk matrix box widget.
- 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 widget 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 exitType 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 relative 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 successful.
- 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
widget. 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
columns 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
columns 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 cursor/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,
- •
-
columnLengths has the lengths of the individual
columns in info.
- Do not use this function. It is obsolete, provided only for
compatibility 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 widget.
- •
- 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 contains, while
columnLengths has the lengths of the individual columns 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 character.
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 widget.
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. |
cdk(3),
cdk_binding(3),
cdk_display(3),
cdk_position(3),
cdk_screen(3)