/*********************************************************************
* Function: CreateOutputArea
*
* Creates a Text Graphic area with the appropriate scroll bars.
* specifying the size with width and height
*
*********************************************************************/
XtPointer
_DtHelpCreateOutputArea(
Widget parent,
char *name,
short vert_flag,
short horz_flag,
Boolean traversal_flag,
_DtCvValue honor_size,
_DtCvRenderType render_type,
Dimension width,
Dimension height,
unsigned short media_resolution,
void (*hyperTextCB)(),
void (*resizeCB)(),
int (*exec_ok_routine)(),
XtPointer client_data,
XmFontList default_list )
{
DtHelpDispAreaStruct *pDAS;
pDAS = HelpCreateDA(parent, name,
vert_flag, horz_flag,
traversal_flag, honor_size, render_type,
1, 1, media_resolution,
hyperTextCB, resizeCB, exec_ok_routine,
client_data, default_list);
/* if area created successfully, then resize it to the given size */
if (pDAS)
_DtHelpSetScrollBars(pDAS, width, height);
return pDAS;
}
/*********************************************************************
* Function: ResizeDisplayArea
*
* ResizeDisplayArea resizes the Display Area and re-formats the
* text based on a row and column values given.
*
*********************************************************************/
void
_DtHelpResizeDisplayArea (
Widget parent,
XtPointer client_data,
int rows,
int columns )
{
int count = 0;
register int n;
unsigned long char_width;
Arg args[5];
Dimension newWidth;
Dimension newHeight;
Dimension vertWidth = 0;
Dimension horzHeight = 0;
Dimension tstWidth;
Dimension tstHeight;
Dimension oldWidth;
Dimension oldHeight;
XEvent event;
XmDrawnButtonCallbackStruct callBack;
DtHelpDispAreaStruct *pDAS = (DtHelpDispAreaStruct *) client_data;
/*
* check the values.
*/
if (rows <= 0)
rows = 1;
if (columns <= 0)
columns = 1;
/* Set the size of the text view area to the requested number of columns */
/* and lines. */
char_width = pDAS->charWidth * columns;
newWidth = char_width / 10 + (char_width % 10 ? 1 : 0) +
2 * (pDAS->decorThickness + pDAS->marginWidth);
newHeight = pDAS->lineHeight * rows + 2 * pDAS->decorThickness;
/*
* get the width and height of the scroll bars.
*/
if (pDAS->vertScrollWid)
{
XtSetArg (args[0], XmNwidth , &vertWidth);
XtGetValues (pDAS->vertScrollWid, args, 1);
}
if (pDAS->horzScrollWid)
{
XtSetArg (args[0], XmNheight , &horzHeight);
XtGetValues (pDAS->horzScrollWid, args, 1);
}
/*
* loop a couple of times at most to get the sizing correct.
* This is caused by the fact we can't do a set values on
* the drawn button itself, someone above it is rejecting
* the resize request. So, resize the great-grandparent
* (a couple of times if necessary).
*/
do {
/*
* take into consideration the scrollbars.
*/
tstWidth = newWidth;
tstHeight = newHeight;
if (pDAS->vertScrollWid &&
_DtHelpIS_AS_NEEDED(pDAS->neededFlags, _DtHelpVERTICAL_SCROLLBAR)
&& pDAS->vertIsMapped)
{
if (tstWidth > vertWidth)
tstWidth -= vertWidth;
else
tstWidth = 0;
}
if (pDAS->horzScrollWid &&
_DtHelpIS_AS_NEEDED(pDAS->neededFlags, _DtHelpHORIZONTAL_SCROLLBAR)
&& pDAS->horzIsMapped)
{
if (tstHeight > horzHeight)
tstHeight -= horzHeight;
else
tstHeight = 0;
}
if (tstWidth == pDAS->dispWidth && tstHeight == pDAS->dispHeight)
return;
/*
* kludge around the fact that some parent is not letting
* me resize the drawn button. Get the parent's size and
* resize that!
*/
n = 0;
XtSetArg(args[n], XmNwidth, &oldWidth); ++n;
XtSetArg(args[n], XmNheight, &oldHeight); ++n;
XtGetValues(parent, args, n);
/*
* calculate its new size
*/
oldWidth = oldWidth - pDAS->dispWidth + tstWidth;
oldHeight = oldHeight - pDAS->dispHeight + tstHeight;
/*
* set my parent's size to affect me.
*/
n = 0;
XtSetArg(args[n], XmNwidth, oldWidth); ++n;
XtSetArg(args[n], XmNheight, oldHeight); ++n;
XtSetValues(parent, args, n);
} while (count++ < 2);
/*
* check to see if the Set Values on my parent took care of everything.
*/
if (pDAS->vertScrollWid &&
_DtHelpIS_AS_NEEDED(pDAS->neededFlags, _DtHelpVERTICAL_SCROLLBAR)
&& pDAS->vertIsMapped)
{
if (newWidth > vertWidth)
newWidth -= vertWidth;
else
newWidth = 0;
}
if (pDAS->horzScrollWid &&
_DtHelpIS_AS_NEEDED(pDAS->neededFlags, _DtHelpHORIZONTAL_SCROLLBAR)
&& pDAS->horzIsMapped)
{
if (newHeight > horzHeight)
newHeight -= horzHeight;
else
newHeight = 0;
}
if (newWidth == pDAS->dispWidth && newHeight == pDAS->dispHeight)
return;
/*
* clean up
_DtHelpClearSelection (pDAS);
*/
/*
* reset the scroll bars and possibly reformat the text.
*/
_DtHelpSetScrollBars (client_data, newWidth, newHeight);
if (XtIsRealized (pDAS->dispWid))
_DtHelpCleanAndDrawWholeCanvas(client_data);
} /* End _DtHelpResizeDisplayArea */
