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cdesktopenv/cde/lib/DtHelp/Actions.c

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/*
* CDE - Common Desktop Environment
*
* Copyright (c) 1993-2012, The Open Group. All rights reserved.
*
* These libraries and programs are free software; you can
* redistribute them and/or modify them under the terms of the GNU
* Lesser General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* These libraries and programs are distributed in the hope that
* they will be useful, but WITHOUT ANY WARRANTY; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with these librararies and programs; if not, write
* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
* Floor, Boston, MA 02110-1301 USA
*/
/* $XConsortium: Actions.c /main/8 1996/10/30 10:03:40 pascale $ */
/************************************<+>*************************************
****************************************************************************
**
** File: Actions.c
**
** Project: Display Area Library
**
** Description: This body of code handles the actions for the
** Display Area.
**
** (c) Copyright 1987, 1988, 1989, 1990, 1991, 1992 Hewlett-Packard Company
**
** (c) Copyright 1993, 1994 Hewlett-Packard Company
** (c) Copyright 1993, 1994 International Business Machines Corp.
** (c) Copyright 1993, 1994 Sun Microsystems, Inc.
** (c) Copyright 1993, 1994 Novell, Inc.
**
**
****************************************************************************
************************************<+>*************************************/
/*
* system includes
*/
#include <stdlib.h>
#include <Xm/Xm.h>
/*
* CanvasEngine
*/
#include "CanvasP.h"
/*
* private includes
*/
#include "DisplayAreaP.h"
#include "DisplayAreaI.h"
#include "ActionsI.h"
#include "CallbacksI.h"
#ifdef NLS16
#endif
/******** Private Function Declarations ********/
/******** End Private Function Declarations ********/
/******** End Private Defines ********/
/******** Private Variable Declarations ********/
/******** End Private Variable Declarations ********/
/******************************************************************************
* Private Functions
******************************************************************************/
/******************************************************************************
* Semi Public Functions
*****************************************************************************/
/*****************************************************************************
* Function: _DtHelpCopyAction
*
* _DtHelpCopyAction - Copy the current info to the clipboard
*
*****************************************************************************/
void
_DtHelpCopyAction (
Widget widget,
XEvent *event,
String *params,
Cardinal *num_params)
{
Arg args[2];
XtPointer userData;
XtSetArg(args[0], XmNuserData, &userData);
XtGetValues(widget, args, 1);
_DtHelpInitiateClipboard(userData);;
} /* End _DtHelpCopyAction */
/*****************************************************************************
* Function: _DtHelpDeSelectAll
*
* _DtHelpDeSelectAll - Deselects the information in the widget.
*
*****************************************************************************/
void
_DtHelpDeSelectAll (
Widget widget,
XEvent *event,
String *params,
Cardinal *num_params)
{
Arg args[2];
XtPointer userData;
XtSetArg(args[0], XmNuserData, &userData);
XtGetValues(widget, args, 1);
if (userData != NULL)
_DtHelpClearSelection (userData);
} /* End _DtHelpDeSelectAll */
/*****************************************************************************
* Function: _DtHelpSelectAll
*
* _DtHelpSelectAll - Selects all the information in the widget.
*
*****************************************************************************/
void
_DtHelpSelectAll (
Widget widget,
XEvent *event,
String *params,
Cardinal *num_params)
{
Arg args[2];
XtPointer userData;
XtSetArg(args[0], XmNuserData, &userData);
XtGetValues(widget, args, 1);
if (userData != NULL)
{
DtHelpDispAreaStruct *pDAS = (DtHelpDispAreaStruct *) userData;
_DtCanvasMoveTraversal(pDAS->canvas, _DtCvTRAVERSAL_OFF, False, True,
NULL, NULL, NULL, NULL, NULL);
_DtHelpGetClearSelection (widget, userData);
_DtCanvasProcessSelection(pDAS->canvas, 0, 0, _DtCvSELECTION_START);
_DtCanvasProcessSelection(pDAS->canvas, pDAS->dispUseWidth,
pDAS->maxYpos, _DtCvSELECTION_END);
_DtCanvasMoveTraversal(pDAS->canvas, _DtCvTRAVERSAL_ON, False, True,
NULL, NULL, NULL, NULL, NULL);
pDAS->text_selected = True;
}
} /* End _DtHelpSelectAll */
/*****************************************************************************
* Function: _DtHelpActivateLink
*
* _DtHelpSelectAll - Selects all the information in the widget.
*
*****************************************************************************/
void
_DtHelpActivateLink (
Widget widget,
XEvent *event,
String *params,
Cardinal *num_params)
{
Arg args[2];
DtHelpDispAreaStruct *pDAS;
_DtCvLinkInfo ceHyper;
DtHelpHyperTextStruct callData;
XtSetArg(args[0], XmNuserData, &pDAS);
XtGetValues(widget, args, 1);
if (pDAS == NULL)
return;
if (! pDAS->dtinfo)
{
if (_DtCvSTATUS_OK == _DtCanvasGetCurLink(pDAS->canvas, &ceHyper))
{
callData.reason = XmCR_ACTIVATE;
callData.event = event;
callData.window = XtWindow (pDAS->dispWid);
callData.specification = ceHyper.specification;
callData.hyper_type = ceHyper.hyper_type;
callData.window_hint = ceHyper.win_hint;
(*(pDAS->hyperCall)) (pDAS, pDAS->clientData, &callData);
}
}
else /* dtinfo context */
{
_DtCvPointer mark_enclosure = NULL;
_DtCvStatus status;
status = _DtCanvasGetCurTraversal(pDAS->canvas, &ceHyper,
&mark_enclosure);
if (status == _DtCvSTATUS_LINK)
{
callData.reason = XmCR_ACTIVATE;
callData.event = event;
callData.window = XtWindow (pDAS->dispWid);
callData.specification = ceHyper.specification;
callData.hyper_type = ceHyper.hyper_type;
callData.window_hint = ceHyper.win_hint;
(*(pDAS->hyperCall)) (pDAS, pDAS->clientData, &callData);
}
else if (status == _DtCvSTATUS_MARK)
{
callData.reason = XmCR_ACTIVATE;
callData.event = event;
callData.window = XtWindow (pDAS->dispWid);
callData.specification = mark_enclosure;
callData.hyper_type = -1; /* signifies it's a mark */
callData.window_hint = 0;
(*(pDAS->hyperCall)) (pDAS, pDAS->clientData, &callData);
}
/* otherwise do nothing */
}
} /* End _DtHelpActivateLink */
/*****************************************************************************
* Function: _DtHelpPageUpOrDown
*
* _DtHelpPageUpOrDown - Selects all the information in the widget.
*
*****************************************************************************/
void
_DtHelpPageUpOrDown (
Widget widget,
XEvent *event,
String *params,
Cardinal *num_params)
{
int keyPressed;
_DtCvUnit newY;
_DtCvUnit diff;
Arg args[2];
XtPointer userData;
XtSetArg(args[0], XmNuserData, &userData);
XtGetValues(widget, args, 1);
if (userData != NULL)
{
DtHelpDispAreaStruct *pDAS = (DtHelpDispAreaStruct *) userData;
diff = pDAS->dispUseHeight - pDAS->lineHeight;
keyPressed = atoi(*params);
if (keyPressed == 0)
diff = -diff;
newY = pDAS->firstVisible + diff;
/*
* Is the new Y position too large?
* If so, adjust.
*/
if (newY + ((int)pDAS->dispUseHeight) > pDAS->maxYpos)
newY = pDAS->maxYpos - pDAS->dispUseHeight;
/*
* Is the new Y before the begining?
* If so, zero it.
*/
if (newY < 0)
newY = 0;
if (newY != pDAS->firstVisible)
{
pDAS->firstVisible = newY;
XtSetArg(args[0], XmNvalue, newY);
XtSetValues (pDAS->vertScrollWid, args, 1);
if (pDAS->vScrollNotify)
(pDAS->vScrollNotify)(pDAS->clientData, pDAS->firstVisible);
_DtHelpCleanAndDrawWholeCanvas (userData);
}
}
} /* End _DtHelpPageUpOrDown */
/*****************************************************************************
* Function: _DtHelpPageLeftOrRight
*
* _DtHelpPageLeftOrRight - Selects all the information in the widget.
*
*****************************************************************************/
void
_DtHelpPageLeftOrRight (
Widget widget,
XEvent *event,
String *params,
Cardinal *num_params)
{
int keyPressed;
_DtCvUnit newX;
_DtCvUnit diff;
Arg args[2];
XtPointer userData;
XtSetArg(args[0], XmNuserData, &userData);
XtGetValues(widget, args, 1);
if (userData != NULL)
{
DtHelpDispAreaStruct *pDAS = (DtHelpDispAreaStruct *) userData;
diff = pDAS->dispUseWidth - ((int) pDAS->charWidth / 10);
keyPressed = atoi(*params);
if (keyPressed == 0)
diff = -diff;
newX = pDAS->virtualX + diff;
/*
* Is the new X position too large?
* If so, adjust.
*/
if (newX + ((int)pDAS->dispUseWidth) > pDAS->maxX)
newX = pDAS->maxX - pDAS->dispUseWidth;
/*
* Is the new X before the begining?
* If so, zero it.
*/
if (newX < 0)
newX = 0;
if (newX != pDAS->virtualX)
{
pDAS->virtualX = newX;
XtSetArg(args[0], XmNvalue, newX);
XtSetValues (pDAS->horzScrollWid, args, 1);
_DtHelpCleanAndDrawWholeCanvas (userData);
}
}
} /* End _DtHelpPageLeftOrRight */
/*****************************************************************************
* Function: _DtHelpNextLink
*
* _DtHelpNextLink - Moves the traversal to the requested hypertext link.
*
*****************************************************************************/
void
_DtHelpNextLink (
Widget widget,
XEvent *event,
String *params,
Cardinal *num_params)
{
_DtCvTraversalCmd cmd = _DtCvTRAVERSAL_NEXT;
_DtCvUnit diff;
_DtCvUnit newY;
_DtCvUnit newX;
_DtCvUnit height;
_DtCvUnit top;
Arg args[2];
XtPointer userData;
XtSetArg(args[0], XmNuserData, &userData);
XtGetValues(widget, args, 1);
if (userData != NULL)
{
DtHelpDispAreaStruct *pDAS = (DtHelpDispAreaStruct *) userData;
switch(atoi(*params))
{
case 0: cmd = _DtCvTRAVERSAL_PREV;
break;
case 2: cmd = _DtCvTRAVERSAL_TOP;
break;
case 3: cmd = _DtCvTRAVERSAL_BOTTOM;
break;
}
if (_DtCvSTATUS_OK == _DtCanvasMoveTraversal(pDAS->canvas, cmd, False,
(XtIsRealized(pDAS->dispWid) ? True : False),
NULL, &newX, &newY, NULL, &height))
{
/*
* take into account our traversal indicator
*/
newY -= pDAS->lineThickness;
height += (2 * pDAS->lineThickness);
top = pDAS->firstVisible;
diff = ((int) pDAS->dispUseHeight) * 2 / 3;
if (newY < top)
{
top = newY;
if (cmd == _DtCvTRAVERSAL_TOP && newY <= diff)
top = 0;
}
else if (newY + height > top + ((int) pDAS->dispUseHeight))
{
top = newY + height - ((int) pDAS->dispUseHeight);
if (cmd == _DtCvTRAVERSAL_BOTTOM &&
newY >= (pDAS->maxYpos - diff))
top = pDAS->maxYpos - pDAS->dispUseHeight;
}
if (top != pDAS->firstVisible)
{
pDAS->firstVisible = top;
if (top + ((int)pDAS->dispUseHeight) > pDAS->maxYpos)
{
pDAS->firstVisible = pDAS->maxYpos - pDAS->dispUseHeight;
if (pDAS->firstVisible < 0)
pDAS->firstVisible = 0;
}
XtSetArg (args[0], XmNvalue, pDAS->firstVisible);
XtSetValues (pDAS->vertScrollWid, args, 1);
if (pDAS->vScrollNotify)
(pDAS->vScrollNotify)(pDAS->clientData, pDAS->firstVisible);
/*
* re-draw the information
*/
_DtHelpCleanAndDrawWholeCanvas (userData);
}
}
}
} /* End _DtHelpNextLink */
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