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- /*
- * buff.c
- *
- * Copyright 2000, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED
- *
- * UNPUBLISHED -- Rights reserved under the copyright laws of the United
- * States. Use of a copyright notice is precautionary only and does not
- * imply publication or disclosure.
- *
- * U.S. GOVERNMENT RESTRICTED RIGHTS LEGEND:
- * Use, duplication or disclosure by the Government is subject to restrictions
- * as set forth in FAR 52.227.19(c)(2) or subparagraph (c)(1)(ii) of the Rights
- * in Technical Data and Computer Software clause at DFARS 252.227-7013 and/or
- * in similar or successor clauses in the FAR, or the DOD or NASA FAR
- * Supplement. Contractor/manufacturer is Silicon Graphics, Inc.,
- * 2011 N. Shoreline Blvd. Mountain View, CA 94039-7311.
- *
- * THE CONTENT OF THIS WORK CONTAINS CONFIDENTIAL AND PROPRIETARY
- * INFORMATION OF SILICON GRAPHICS, INC. ANY DUPLICATION, MODIFICATION,
- * DISTRIBUTION, OR DISCLOSURE IN ANY FORM, IN WHOLE, OR IN PART, IS STRICTLY
- * PROHIBITED WITHOUT THE PRIOR EXPRESS WRITTEN PERMISSION OF SILICON
- * GRAPHICS, INC.
- */
- /* $XConsortium: buff.c /main/cde1_maint/1 1995/07/17 16:41:27 drk $ */
- /*****************************************************************************
- *****************************************************************************
- **
- ** File: buff.c
- **
- ** Description: Buffer transfer functions for the CDE Drag & Drop Demo.
- **
- ** (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 Unix System Labs, Inc., a subsidiary of
- ** Novell, Inc.
- **
- ****************************************************************************
- ************************************<+>*************************************/
-
- #include <time.h>
-
- #include <X11/Intrinsic.h>
-
- #include <Xm/Xm.h>
- #include <Xm/List.h>
-
- #include <Dt/Dt.h>
- #include <Dt/Dnd.h>
-
- #include "icon.h"
- #include "file.h"
- #include "demo.h"
- #include "buff.h"
-
- extern Widget topLevel;
-
- /*************************************************************************
- *
- * Data Structures & Private Declarations For Appointment Buffers
- *
- **************************************************************************/
-
- /*
- * Appointment structure used to store appointments internally.
- */
-
- typedef struct _Appointment {
- char *date;
- char *start;
- char *end;
- char *what;
- } Appointment;
-
- /*
- * List of appointments which always appear to be for the current date.
- */
-
- char today[9]; /* initialized in apptCreateList() */
-
- Appointment todaysApptList[] = {
- #ifdef TEST_APPT_NAMES
- { today, "", "", "Staff Meeting" }, /* no name */
- { today, " 9:30am", "10:00am", "Will's Party1" }, /* duplicate names */
- { today, " 9:30am", "10:00am", "Will's Party2" },
- #else
- { today, " 9:00am", " 9:30am", "Staff Meeting" },
- { today, " 9:30am", "10:00am", "Will's Party" },
- #endif
- { today, "10:00am", "10:30am", "Conference Call" },
- { today, "10:30am", "11:30am", "Work on Mail" },
- { today, "11:00am", "11:30pm", "B'fast w/ Robert" },
- { today, " 1:30pm", " 2:30pm", "Design Meeting" },
- { today, " 3:00pm", " 4:00pm", "Communications" },
- { today, " 4:00pm", " 4:30pm", "Pick up Dogs" },
- { today, " 5:00pm", " 6:30pm", "Beer Bust" },
- { today, " 7:00pm", " 9:00pm", "Dinner - Stuart" },
- { NULL, NULL, NULL, NULL }
- };
-
- /*
- * CDE appointment format used to transfer the appointments via drag & drop.
- */
-
- char *apptFormat =
- " ** Calendar Appointment **\n\
- \n\
- Date: %s\n\
- Start: %s\n\
- End: %s\n\
- What: %s\n";
-
- /*
- * Private Appointment Buffer Function Declarations
- */
-
- static void apptConvertCallback(Widget, XtPointer, XtPointer);
- static int apptCreateList(XmString**);
- static void apptDestroyList(XmString*,int);
- static Appointment* apptFromListEntry(XmString);
- static char* apptGetLabel(char*);
-
- /*************************************************************************
- *
- * Appointment Drag & Drop
- *
- **************************************************************************/
-
- /*
- * apptConvertCallback
- *
- * Fills in buffer structure with calendar appointment string based on which
- * appointments are selected in the scrolled list when the drag is started.
- * ihen no appointments are selected, the appointment under the pointer is
- * used. Supply a label for the calendar appointment based on the contents
- * of the appointment.
- */
- static void
- apptConvertCallback(
- Widget dragContext,
- XtPointer clientData,
- XtPointer callData)
- {
- DtDndConvertCallbackStruct *convertInfo =
- (DtDndConvertCallbackStruct *) callData;
- DtDndBuffer *buffers = convertInfo->dragData->data.buffers;
- Widget apptList = (Widget)clientData;
- int selectedPos, ii,
- selectedItemCount;
- XmStringTable selectedItems;
- char apptString[1024];
- String labelString;
- Appointment *appt;
-
- if (convertInfo == NULL) {
- return;
- }
-
- /*
- * Verify the validity of the callback reason
- */
-
- if (convertInfo->dragData->protocol != DtDND_BUFFER_TRANSFER ||
- (convertInfo->reason != DtCR_DND_CONVERT_DATA &&
- convertInfo->reason != DtCR_DND_CONVERT_DELETE)) {
- return;
- }
-
- /*
- * Get selected items from the list
- */
-
- XtVaGetValues(apptList,
- XmNuserData, &selectedPos,
- XmNselectedItemCount, &selectedItemCount,
- XmNselectedItems, &selectedItems,
- NULL);
-
- for (ii = 0; ii < convertInfo->dragData->numItems; ii++) {
-
- /*
- * Get the actual appointment(s)
- */
-
- if (selectedItemCount == 0) {
- appt = &todaysApptList[selectedPos-1+ii];
- } else {
- appt = apptFromListEntry(selectedItems[ii]);
- }
- sprintf(apptString, apptFormat,
- appt->date, appt->start, appt->end, appt->what);
-
- /*
- * Supply the appointment(s) for transfer
- */
-
- if (convertInfo->reason == DtCR_DND_CONVERT_DATA) {
-
- /* Copy the appointment into the buffer for transfer */
-
- buffers[ii].bp = XtNewString(apptString);
- buffers[ii].size = strlen(buffers[ii].bp);
-
- /* Supply the name for the appointment */
-
- labelString = apptGetLabel(apptString);
- if (labelString == NULL) {
- buffers[ii].name = (char *)NULL;
- } else {
- buffers[ii].name = XtNewString(labelString);
- XtFree(labelString);
- }
-
- /*
- * Delete the moved appointment(s)
- */
-
- } else if (convertInfo->reason == DtCR_DND_CONVERT_DELETE) {
- printf("Delete appointment for %s\n", appt->what);
- }
- }
- }
-
- /*
- * apptDragFinishCallback
- *
- * Free buffer data/names allocated in apptConvertCallback()
- */
- void
- apptDragFinishCallback(
- Widget widget,
- XtPointer clientData,
- XtPointer callData)
- {
- DtDndDragFinishCallbackStruct *dropFinishInfo =
- (DtDndDragFinishCallbackStruct *)callData;
- DtDndContext *dragData = dropFinishInfo->dragData;
- int ii;
-
- for (ii = 0; ii < dragData->numItems; ii++) {
- XtFree(dragData->data.buffers[ii].bp);
- if (dragData->data.buffers[ii].name != NULL)
- XtFree(dragData->data.buffers[ii].name);
- }
- }
-
- /*
- * apptTransferCallback
- *
- * Handles the transfer of an appointment to the draw area drop site.
- * Adds the appropriate icon to the list of icons on the draw area.
- */
- void
- apptTransferCallback(
- Widget widget,
- XtPointer clientData,
- XtPointer callData)
- {
- DtDndTransferCallbackStruct *transferInfo =
- (DtDndTransferCallbackStruct*) callData;
- DtDndBuffer *buffers;
- IconInfo *iconList, *iconPtr;
- char *name;
- char *filename;
- int ii;
-
- if (transferInfo == NULL) {
- return;
- }
-
- /*
- * Verify the validity of the callback reason.
- */
-
- if (transferInfo->dropData->protocol != DtDND_BUFFER_TRANSFER ||
- transferInfo->reason != DtCR_DND_TRANSFER_DATA) {
- return;
- }
-
- /*
- * Use abbreviated method of refering to the data buffers.
- */
-
- if (transferInfo != NULL && transferInfo->dropData != NULL) {
- buffers = transferInfo->dropData->data.buffers;
- } else {
- return;
- }
-
- /*
- * Process each item being transfered.
- */
-
- XtVaGetValues(widget, XmNuserData, &iconList, NULL);
- for (ii = 0; ii < transferInfo->dropData->numItems; ii++) {
-
- /*
- * Check format of buffer
- */
-
- /*
- * Transfer the buffer data. Here there is no actual transfer
- * taking place. Only the icons representing the appointments
- * are created to indicate the transfer.
- */
-
- name = buffers[ii].name;
- if (name == NULL)
- name = "unnamed";
-
- /* Create file from buffer */
-
- filename = fileStoreBuffer(buffers[ii].name,
- buffers[ii].bp, buffers[ii].size);
- printf("Stored buffer into '%s'\n", filename);
- XtFree(filename);
-
- /* Create icon */
-
- iconPtr = IconNew();
- IconInitialize(widget, iconPtr,
- transferInfo->x + ii * 10,
- transferInfo->y + ii * 10,
- buffers[ii].bp, buffers[ii].size, name, IconByData);
-
- /* Add to icon list on drop site */
-
- iconPtr->next = iconList;
- if (iconList != NULL) {
- iconList->prev = iconPtr;
- }
- iconList = iconPtr;
- XtVaSetValues(widget, XmNuserData, iconList, NULL);
- }
- }
-
- /*
- * apptDragSetup
- *
- * Prepares the appointment list to source drags of appointments with button 1.
- */
- void
- apptDragSetup(
- Widget apptDragSource)
- {
- XtAddEventHandler(apptDragSource, Button1MotionMask, False,
- (XtEventHandler)demoDragMotionHandler,
- (XtPointer)DtDND_BUFFER_TRANSFER);
- }
-
- /*
- * apptDropSetup
- *
- * Such a function is not needed since the demoDropSetup in demo.c registers
- * the draw area as a drop site for drops of buffers such as appointments.
- */
-
- /*
- * apptDragStart
- *
- * Initiates a drag of an appointment from the appointment list provided
- * the pointer is over an appointment in the list.
- */
- void
- apptDragStart(
- Widget widget,
- XEvent *event)
- {
- static XtCallbackRec convertCBRec[] = { {apptConvertCallback, NULL},
- {NULL, NULL} };
- static XtCallbackRec dragFinishCBRec[] =
- { {demoDragFinishCallback, NULL},
- {apptDragFinishCallback, NULL},
- {NULL, NULL} };
- static IconInfo *iconPtr = NULL;
- Widget dragIcon;
- Display *display = XtDisplay(widget);
- int itemCount,
- selectedPos,
- selectedItemCount;
- char apptString[1024];
-
- convertCBRec[0].closure = (XtPointer)widget;
-
- /*
- * Get list of selected items from the scrolled list of appointments
- */
-
- XtVaGetValues(widget,
- XmNitemCount, &itemCount,
- XmNselectedItemCount, &selectedItemCount,
- NULL);
-
- /*
- * Find out which item the pointer was over when the drag began
- */
-
- selectedPos = XmListYToPos(widget, event->xmotion.y);
-
- if (selectedPos == 0 || selectedPos > itemCount) {
- return;
- }
-
- XtVaSetValues(widget, XmNuserData, selectedPos, NULL);
-
- /*
- * Copy the appointment information into an appointment string
- */
-
- sprintf(apptString, apptFormat,
- todaysApptList[1].date, todaysApptList[1].start,
- todaysApptList[1].end, todaysApptList[1].what);
-
- /*
- * Create drag icon for appointment buffer drag
- */
-
- if (iconPtr == NULL) {
- iconPtr = IconNew();
- IconInitialize(widget, iconPtr, 0, 0,
- apptString, strlen(apptString), NULL, IconByData);
- }
-
- if (iconPtr->dragIcon == NULL) {
- iconPtr->dragIcon = DtDndCreateSourceIcon(widget,
- iconPtr->bitmap, iconPtr->mask);
- }
- if (selectedItemCount > 1) {
- dragIcon = NULL;
- itemCount = selectedItemCount;
- } else {
- dragIcon = iconPtr->dragIcon;
- itemCount = 1;
- }
-
- /*
- * Start the drag
- */
-
- if (DtDndVaDragStart(widget, event, DtDND_BUFFER_TRANSFER, itemCount,
- XmDROP_COPY,
- convertCBRec, dragFinishCBRec,
- DtNsourceIcon, dragIcon,
- DtNbufferIsText, True,
- NULL)
- == NULL) {
-
- printf("DragStart returned NULL.\n");
- }
- }
-
- /*************************************************************************
- *
- * Appointment Creation, Initialization & Destruction
- *
- *************************************************************************/
-
- /*
- * apptCreateDragSource
- *
- * Create a scrolling list filled with appointments.
- */
- Widget
- apptCreateDragSource(
- Widget parent)
- {
- Widget apptList;
- XmString *apptListItems;
- int apptCount;
-
- apptCount = apptCreateList(&apptListItems);
-
- apptList = XtVaCreateManagedWidget("apptList",
- xmListWidgetClass, parent,
- /*
- * Uncomment the line specifying the selection policy to
- * enable multiple buffer transfers from the scrolled list
- * of appointments. WARNING: There is a bug in the interaction
- * of the scrolled list and Drag and Drop which causes items
- * in the scrolled list which are selected to appear unselected
- * and vice versa.
- */
- /* XmNselectionPolicy, XmMULTIPLE_SELECT, */
- XmNitems, apptListItems,
- XmNitemCount, apptCount,
- NULL);
-
- apptDestroyList(apptListItems, apptCount);
-
- return apptList;
- }
-
- /*
- * apptCreateDropSite
- *
- * Such a function is not needed since the drop site is the draw area which
- * is created in demoCreateDropSite() in demo.c
- */
-
- /*
- * apptCreateList
- *
- * Creates a list of XmStrings with appointment data in them.
- */
- static int
- apptCreateList(
- XmString **appts)
- {
- int ii, apptCount;
- char tmpStr[256];
- time_t now;
- struct tm *tm;
-
- now = time(&now);
- tm = localtime(&now);
-
- sprintf(today, "%2d/%2d/%2d", tm->tm_mon+1, tm->tm_mday, tm->tm_year);
-
- for (ii = 0; todaysApptList[ii].date; ii++);
-
- apptCount = ii;
-
- *appts = (XmString *) XtMalloc(sizeof(XmString) * apptCount);
-
- for (ii = 0; todaysApptList[ii].date; ii++) {
-
- sprintf(tmpStr, "%s %s", todaysApptList[ii].start,
- todaysApptList[ii].what);
-
- (*appts)[ii] = XmStringCreate(tmpStr, XmFONTLIST_DEFAULT_TAG);
-
- }
- return apptCount;
- }
-
- /*
- * apptDestroyList
- *
- * Destroys a list of XmStrings with appointment data in them.
- */
- static void
- apptDestroyList(
- XmString *appts,
- int apptCount)
- {
- int ii;
-
- for (ii = 0; ii < apptCount; ii++) {
- XmStringFree(appts[ii]);
- }
- XtFree((char *)appts);
- }
-
- /*************************************************************************
- *
- * Appointment Utility Functions
- *
- *************************************************************************/
-
- /*
- * apptFromListEntry
- *
- * Returns the full appointment based on the text of the appointment as
- * given in the text entry from the scrolled list of appointments.
- */
- static Appointment*
- apptFromListEntry(
- XmString listEntry)
- {
- int ii;
- char *entryText,
- *string;
-
- /*
- * Get text string from XmString for use in comparisons
- */
-
- XmStringGetLtoR(listEntry, XmFONTLIST_DEFAULT_TAG, &entryText);
-
- for (ii = 0; todaysApptList[ii].what != NULL; ii++) {
- string = strstr(entryText, todaysApptList[ii].what);
- if (string != NULL) {
- XtFree(entryText);
- return(&todaysApptList[ii]);
- }
- }
- XtFree(entryText);
- return NULL;
- }
-
- /*
- * apptGetLabel
- *
- * Creates a label for an appointment icon given an appointment.
- */
- static char*
- apptGetLabel(
- char *appt)
- {
- char start[128];
- int count;
-
- if (appt == NULL) {
- return NULL;
- }
- appt = strstr(appt, "Start:");
- count = sscanf(appt, "Start:%*[ \t]%[^\n]", start);
-
- if (count != 1) {
- return NULL;
- }
-
- return XtNewString(start);
- }
-
-