Initial import of the CDE 2.1.30 sources from the Open Group.
This commit is contained in:
Peter Howkins
427
cde/lib/DtHelp/Actions.c
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427
cde/lib/DtHelp/Actions.c
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/* $XConsortium: Actions.c /main/8 1996/10/30 10:03:40 pascale $ */
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/************************************<+>*************************************
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****************************************************************************
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**
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** File: Actions.c
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**
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** Project: Display Area Library
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**
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** Description: This body of code handles the actions for the
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** Display Area.
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**
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** (c) Copyright 1987, 1988, 1989, 1990, 1991, 1992 Hewlett-Packard Company
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**
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** (c) Copyright 1993, 1994 Hewlett-Packard Company
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** (c) Copyright 1993, 1994 International Business Machines Corp.
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** (c) Copyright 1993, 1994 Sun Microsystems, Inc.
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** (c) Copyright 1993, 1994 Novell, Inc.
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**
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**
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****************************************************************************
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************************************<+>*************************************/
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/*
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* system includes
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*/
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#include <Xm/Xm.h>
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/*
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* CanvasEngine
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*/
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#include "CanvasP.h"
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/*
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* private includes
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*/
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#include "DisplayAreaP.h"
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#include "DisplayAreaI.h"
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#include "ActionsI.h"
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#include "CallbacksI.h"
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#ifdef NLS16
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#endif
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/******** Private Function Declarations ********/
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/******** End Private Function Declarations ********/
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/******** End Private Defines ********/
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/******** Private Variable Declarations ********/
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/******** End Private Variable Declarations ********/
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/******************************************************************************
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* Private Functions
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******************************************************************************/
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/******************************************************************************
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* Semi Public Functions
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*****************************************************************************/
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/*****************************************************************************
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* Function: _DtHelpCopyAction
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*
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* _DtHelpCopyAction - Copy the current info to the clipboard
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*
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*****************************************************************************/
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void
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_DtHelpCopyAction (
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Widget widget,
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XEvent *event,
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String *params,
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Cardinal *num_params)
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{
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Arg args[2];
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XtPointer userData;
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XtSetArg(args[0], XmNuserData, &userData);
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XtGetValues(widget, args, 1);
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_DtHelpInitiateClipboard(userData);;
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} /* End _DtHelpCopyAction */
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/*****************************************************************************
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* Function: _DtHelpDeSelectAll
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*
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* _DtHelpDeSelectAll - Deselects the information in the widget.
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*
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*****************************************************************************/
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void
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_DtHelpDeSelectAll (
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Widget widget,
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XEvent *event,
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String *params,
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Cardinal *num_params)
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{
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Arg args[2];
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XtPointer userData;
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XtSetArg(args[0], XmNuserData, &userData);
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XtGetValues(widget, args, 1);
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if (userData != NULL)
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_DtHelpClearSelection (userData);
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} /* End _DtHelpDeSelectAll */
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/*****************************************************************************
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* Function: _DtHelpSelectAll
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*
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* _DtHelpSelectAll - Selects all the information in the widget.
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*
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*****************************************************************************/
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void
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_DtHelpSelectAll (
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Widget widget,
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XEvent *event,
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String *params,
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Cardinal *num_params)
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{
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Arg args[2];
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XtPointer userData;
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XtSetArg(args[0], XmNuserData, &userData);
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XtGetValues(widget, args, 1);
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if (userData != NULL)
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{
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DtHelpDispAreaStruct *pDAS = (DtHelpDispAreaStruct *) userData;
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_DtCanvasMoveTraversal(pDAS->canvas, _DtCvTRAVERSAL_OFF, False, True,
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NULL, NULL, NULL, NULL, NULL);
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_DtHelpGetClearSelection (widget, userData);
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_DtCanvasProcessSelection(pDAS->canvas, 0, 0, _DtCvSELECTION_START);
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_DtCanvasProcessSelection(pDAS->canvas, pDAS->dispUseWidth,
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pDAS->maxYpos, _DtCvSELECTION_END);
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_DtCanvasMoveTraversal(pDAS->canvas, _DtCvTRAVERSAL_ON, False, True,
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NULL, NULL, NULL, NULL, NULL);
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pDAS->text_selected = True;
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}
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} /* End _DtHelpSelectAll */
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/*****************************************************************************
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* Function: _DtHelpActivateLink
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*
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* _DtHelpSelectAll - Selects all the information in the widget.
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*
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*****************************************************************************/
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void
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_DtHelpActivateLink (
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Widget widget,
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XEvent *event,
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String *params,
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Cardinal *num_params)
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{
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Arg args[2];
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DtHelpDispAreaStruct *pDAS;
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_DtCvLinkInfo ceHyper;
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DtHelpHyperTextStruct callData;
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XtSetArg(args[0], XmNuserData, &pDAS);
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XtGetValues(widget, args, 1);
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if (pDAS == NULL)
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return;
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if (! pDAS->dtinfo)
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{
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if (_DtCvSTATUS_OK == _DtCanvasGetCurLink(pDAS->canvas, &ceHyper))
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{
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callData.reason = XmCR_ACTIVATE;
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callData.event = event;
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callData.window = XtWindow (pDAS->dispWid);
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callData.specification = ceHyper.specification;
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callData.hyper_type = ceHyper.hyper_type;
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callData.window_hint = ceHyper.win_hint;
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(*(pDAS->hyperCall)) (pDAS, pDAS->clientData, &callData);
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}
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}
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else /* dtinfo context */
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{
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_DtCvPointer mark_enclosure = NULL;
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_DtCvStatus status;
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status = _DtCanvasGetCurTraversal(pDAS->canvas, &ceHyper,
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&mark_enclosure);
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if (status == _DtCvSTATUS_LINK)
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{
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callData.reason = XmCR_ACTIVATE;
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callData.event = event;
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callData.window = XtWindow (pDAS->dispWid);
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callData.specification = ceHyper.specification;
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callData.hyper_type = ceHyper.hyper_type;
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callData.window_hint = ceHyper.win_hint;
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(*(pDAS->hyperCall)) (pDAS, pDAS->clientData, &callData);
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}
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else if (status == _DtCvSTATUS_MARK)
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{
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callData.reason = XmCR_ACTIVATE;
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callData.event = event;
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callData.window = XtWindow (pDAS->dispWid);
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callData.specification = mark_enclosure;
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callData.hyper_type = -1; /* signifies it's a mark */
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callData.window_hint = 0;
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(*(pDAS->hyperCall)) (pDAS, pDAS->clientData, &callData);
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}
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/* otherwise do nothing */
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}
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} /* End _DtHelpActivateLink */
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/*****************************************************************************
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* Function: _DtHelpPageUpOrDown
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*
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* _DtHelpPageUpOrDown - Selects all the information in the widget.
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*
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*****************************************************************************/
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void
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_DtHelpPageUpOrDown (
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Widget widget,
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XEvent *event,
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String *params,
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Cardinal *num_params)
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{
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int keyPressed;
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_DtCvUnit newY;
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_DtCvUnit diff;
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Arg args[2];
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XtPointer userData;
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XtSetArg(args[0], XmNuserData, &userData);
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XtGetValues(widget, args, 1);
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if (userData != NULL)
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{
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DtHelpDispAreaStruct *pDAS = (DtHelpDispAreaStruct *) userData;
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diff = pDAS->dispUseHeight - pDAS->lineHeight;
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keyPressed = atoi(*params);
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if (keyPressed == 0)
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diff = -diff;
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newY = pDAS->firstVisible + diff;
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/*
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* Is the new Y position too large?
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* If so, adjust.
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*/
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if (newY + ((int)pDAS->dispUseHeight) > pDAS->maxYpos)
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newY = pDAS->maxYpos - pDAS->dispUseHeight;
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/*
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* Is the new Y before the begining?
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* If so, zero it.
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*/
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if (newY < 0)
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newY = 0;
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if (newY != pDAS->firstVisible)
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{
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pDAS->firstVisible = newY;
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XtSetArg(args[0], XmNvalue, newY);
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XtSetValues (pDAS->vertScrollWid, args, 1);
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if (pDAS->vScrollNotify)
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(pDAS->vScrollNotify)(pDAS->clientData, pDAS->firstVisible);
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_DtHelpCleanAndDrawWholeCanvas (userData);
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}
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}
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} /* End _DtHelpPageUpOrDown */
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/*****************************************************************************
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* Function: _DtHelpPageLeftOrRight
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*
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* _DtHelpPageLeftOrRight - Selects all the information in the widget.
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*
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*****************************************************************************/
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void
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_DtHelpPageLeftOrRight (
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Widget widget,
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XEvent *event,
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String *params,
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Cardinal *num_params)
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{
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int keyPressed;
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_DtCvUnit newX;
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_DtCvUnit diff;
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Arg args[2];
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XtPointer userData;
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XtSetArg(args[0], XmNuserData, &userData);
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XtGetValues(widget, args, 1);
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if (userData != NULL)
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{
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DtHelpDispAreaStruct *pDAS = (DtHelpDispAreaStruct *) userData;
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diff = pDAS->dispUseWidth - ((int) pDAS->charWidth / 10);
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keyPressed = atoi(*params);
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if (keyPressed == 0)
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diff = -diff;
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newX = pDAS->virtualX + diff;
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/*
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* Is the new X position too large?
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* If so, adjust.
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*/
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if (newX + ((int)pDAS->dispUseWidth) > pDAS->maxX)
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newX = pDAS->maxX - pDAS->dispUseWidth;
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/*
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* Is the new X before the begining?
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* If so, zero it.
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*/
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if (newX < 0)
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newX = 0;
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if (newX != pDAS->virtualX)
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{
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pDAS->virtualX = newX;
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XtSetArg(args[0], XmNvalue, newX);
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XtSetValues (pDAS->horzScrollWid, args, 1);
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_DtHelpCleanAndDrawWholeCanvas (userData);
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}
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}
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} /* End _DtHelpPageLeftOrRight */
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/*****************************************************************************
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* Function: _DtHelpNextLink
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*
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* _DtHelpNextLink - Moves the traversal to the requested hypertext link.
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*
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*****************************************************************************/
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void
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_DtHelpNextLink (
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Widget widget,
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XEvent *event,
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String *params,
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Cardinal *num_params)
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{
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_DtCvTraversalCmd cmd = _DtCvTRAVERSAL_NEXT;
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_DtCvUnit diff;
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_DtCvUnit newY;
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_DtCvUnit newX;
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_DtCvUnit height;
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_DtCvUnit top;
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Arg args[2];
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XtPointer userData;
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XtSetArg(args[0], XmNuserData, &userData);
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XtGetValues(widget, args, 1);
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if (userData != NULL)
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{
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DtHelpDispAreaStruct *pDAS = (DtHelpDispAreaStruct *) userData;
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switch(atoi(*params))
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{
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case 0: cmd = _DtCvTRAVERSAL_PREV;
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break;
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case 2: cmd = _DtCvTRAVERSAL_TOP;
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break;
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case 3: cmd = _DtCvTRAVERSAL_BOTTOM;
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break;
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}
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if (_DtCvSTATUS_OK == _DtCanvasMoveTraversal(pDAS->canvas, cmd, False,
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(XtIsRealized(pDAS->dispWid) ? True : False),
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NULL, &newX, &newY, NULL, &height))
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{
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/*
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* take into account our traversal indicator
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*/
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newY -= pDAS->lineThickness;
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height += (2 * pDAS->lineThickness);
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top = pDAS->firstVisible;
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diff = ((int) pDAS->dispUseHeight) * 2 / 3;
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if (newY < top)
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{
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top = newY;
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if (cmd == _DtCvTRAVERSAL_TOP && newY <= diff)
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top = 0;
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}
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else if (newY + height > top + ((int) pDAS->dispUseHeight))
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{
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top = newY + height - ((int) pDAS->dispUseHeight);
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if (cmd == _DtCvTRAVERSAL_BOTTOM &&
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newY >= (pDAS->maxYpos - diff))
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top = pDAS->maxYpos - pDAS->dispUseHeight;
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}
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if (top != pDAS->firstVisible)
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{
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pDAS->firstVisible = top;
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if (top + ((int)pDAS->dispUseHeight) > pDAS->maxYpos)
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{
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pDAS->firstVisible = pDAS->maxYpos - pDAS->dispUseHeight;
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if (pDAS->firstVisible < 0)
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pDAS->firstVisible = 0;
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}
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XtSetArg (args[0], XmNvalue, pDAS->firstVisible);
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XtSetValues (pDAS->vertScrollWid, args, 1);
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if (pDAS->vScrollNotify)
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(pDAS->vScrollNotify)(pDAS->clientData, pDAS->firstVisible);
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/*
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* re-draw the information
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*/
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_DtHelpCleanAndDrawWholeCanvas (userData);
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}
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}
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}
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} /* End _DtHelpNextLink */
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