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Man Pages


Manual Reference Pages  -  ACTIVATECDKVIEWER (3)

NAME

cdk_viewer - curses viewer list widget.

CONTENTS

Synopsis
Description
Available Functions
Key Bindings
See Also

SYNOPSIS

cc [ flag ... ] file ... -lcdk [ library ... ]

#include <cdk.h>


int activateCDKViewer (
  CDKVIEWER *viewer);
void cleanCDKViewer (
  CDKVIEWER *viewer);
void destroyCDKViewer (
  CDKVIEWER *viewer);
void drawCDKViewer (
  CDKVIEWER *viewer, boolean box);
void eraseCDKViewer (
  CDKVIEWER *viewer);
boolean getCDKViewerBox (
  CDKVIEWER *viewer);
chtype getCDKViewerHighlight (
  CDKVIEWER *viewer);
chtype **getCDKViewerInfo (
  CDKVIEWER *viewer, char **itemList);
boolean getCDKViewerInfoLine (
  CDKVIEWER *viewer);
chtype **getCDKViewerTitle (
  CDKVIEWER *viewer);
void moveCDKViewer (
  CDKVIEWEE *viewer, int box, int box, boolean relative, boolean refresh);
CDKVIEWER *newCDKViewer (
  CDKSCREEN *cdkscreen, int xpos, int ypos, int height, int width, CDK_CONST char **buttonList, int buttonCount, chtype buttonHighlight, boolean box, boolean shadow);
void positionCDKViewer (
  CDKVIEWER *viewer);
void setCDKViewer (
  CDKVIEWER *viewer, const char *title, CDK_CONST char **list, int listSize, chtype buttonAttribute, boolean interpret, boolean showLineInfo, boolean box);
void setCDKViewerBackgroundAttrib (
  CDKVIEWER *viewer, chtype attribute);
void setCDKViewerBackgroundColor (
  CDKVIEWER *viewer, const char * color);
void setCDKViewerBox (
  CDKVIEWER *viewer, boolean Box);
void setCDKViewerBoxAttribute (
  CDKVIEWER *viewer, chtype character);
void setCDKViewerHighlight (
  CDKVIEWER *viewer, chtype highlight);
void setCDKViewerHorizontalChar (
  CDKVIEWER *viewer, chtype character);
void setCDKViewerInfo (
  CDKVIEWER *viewer, CDK_CONST char **list, int listSize, boolean interpret);
void setCDKViewerInfoLine (
  CDKVIEWER *viewer, boolean showInfoLine);
void setCDKViewerLLChar (
  CDKVIEWER *viewer, chtype character);
void setCDKViewerLRChar (
  CDKVIEWER *viewer, chtype character);
void setCDKViewerTitle (
  CDKVIEWER *viewer, const char *title);
void setCDKViewerULChar (
  CDKVIEWER *viewer, chtype character);
void setCDKViewerURChar (
  CDKVIEWER *viewer, chtype character);
void setCDKViewerVerticalChar (
  CDKVIEWER *viewer, chtype character);

DESCRIPTION

The Cdk viewer widget creates a file viewer widget. This widget allows a user to interact with a file. It does NOT allow editing, this is view only. The following are functions which create or manipulate the Cdk viewer list widget.

AVAILABLE FUNCTIONS

activateCDKViewer
  activates the viewer widget and lets the user interact with the widget. The parameter viewer is a pointer to a non-NULL viewer 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 a value from 0 to the number of buttons -1, representing the button selected. 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.
cleanCDKViewer
  clears the information from the window.
destroyCDKViewer
  removes the widget from the screen and frees memory the object used.
drawCDKViewer
  draws the viewer widget on the screen. If the box option is true, the widget is drawn with a box.
eraseCDKViewer
  removes the widget from the screen. This does NOT destroy the widget.
getCDKViewerBox
  returns true if the widget will be drawn with a box around it.
getCDKViewerHighlight
  returns the attribute of the buttons.
getCDKViewerInfo
  returns the contents of the viewer widget.
getCDKViewerInfoLine
  returns true if the information line is on.
getCDKViewerTitle
  returns the title of the widget.
moveCDKViewer
  function 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.
*newCDKViewer
  function creates a viewer 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.
height and
width
  are the height and width of the viewer window.
buttons
  is an array of the button labels which are to be attached to the viewer on the bottom.
buttonCount
  is the number of buttons in buttons.
buttonHighlight
  is the highlight attribute of the currently selected button.
box is true if the widget should be drawn with a box around it.
shadow
  turns the shadow on or off around this widget.
If the widget could not be created then a NULL pointer is returned.
positionCDKViewer
  allows the user to move the widget around the screen via the cursor/keypad keys. See cdk_position (3) for key bindings.
setCDKViewer
  lets the programmer modify several elements of an existing viewer widget. The parameter title is the title to be displayed on the top of the viewer.
The parameter list is the information to display, while listSize states how many rows there are in the list array. If listSize is negative, list is scanned to find its length, including files which will be included via embedded links.
The parameter buttonAttribute states the attribute of the current highlighted button. The boolean parameter interpret tells the viewer to interpret the contents of list for Cdk display command. The showLineInfo boolean flag tells the viewer to show to show the line number and percentage in the top left corner of the viewer window. The parameters box and shadow are the same as in the function description of newCDKViewer.
setCDKViewerBackgroundAttrib
  sets the background attribute of the widget. The parameter attribute is a curses attribute, e.g., A_BOLD.
setCDKViewerBackgroundColor
  sets the background color of the widget. The parameter color is in the format of the Cdk format strings. See cdk_display (3).
setCDKViewerBox
  sets whether the widget will be drawn with a box around it.
setCDKViewerBoxAttribute
  sets the attribute of the box.
setCDKViewerHighlight
  sets the highlight attribute of the buttons on the widget.
setCDKViewerHorizontalChar
  sets the horizontal drawing character for the box to the given character.
setCDKViewerInfo
  sets the contents of the viewer widget. See setCDKViewer for parameter descriptions.
setCDKViewerInfoLine
  turns on/off the information line in the top left hand corner of the widget. If the value of showInfoLine is TRUE, the information line will be displayed. If it is FALSE it won’t.
setCDKViewerLLChar
  sets the lower left hand corner of the widget’s box to the given character.
setCDKViewerLRChar
  sets the lower right hand corner of the widget’s box to the given character.
setCDKViewerTitle
  sets the title of the widget.
setCDKViewerULChar
  sets the upper left hand corner of the widget’s box to the given character.
setCDKViewerURChar
  sets the upper right hand corner of the widget’s box to the given character.
setCDKViewerVerticalChar
  sets the vertical drawing character for the box to the given character.

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 widget.

KeyAction
Left ArrowShifts the viewport one column left.
Right ArrowShifts the viewport one column left
Up ArrowScrolls the viewport one line up.
Down ArrowScrolls the viewport one line down.
Prev Page 
Ctrl-B 
B 
bScroll one page backward.
Next Page 
Ctrl-F 
Space 
F 
fScroll one page forward.
Home 
|Shift the whole list to the far left.
End 
$Shift the whole list to the far right.
1 
< 
gMoves to the first line in the viewer.
> 
GMoves to the last line in the viewer.
LMoves half the distance to the end of the viewer.
lMoves half the distance to the top of the viewer.
?Searches up for a pattern.
/Searches down for a pattern.
nRepeats last search.
NRepeats last search, reversed direction.
:Jumps to a given line.
iDisplays file statistics.
sDisplays file statistics.
TabSwitches buttons.
ReturnExit the widget and return the index of the selected button. Set the widget data exitType to vNORMAL.
EscapeExit the widget and return -1. Set the widget data exitType to vESCAPE_HIT.
Ctrl-LRefreshes the screen.

SEE ALSO

cdk(3), cdk_binding(3), cdk_display(3), cdk_position(3), cdk_screen(3)
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