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Initial revision
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scottc
293
WINGs/selection.c
Normal file
293
WINGs/selection.c
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#include <stdlib.h>
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#include <X11/Xatom.h>
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#include "WINGsP.h"
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#if 0
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typedef struct W_SelectionHandler {
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WMWidget *widget;
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Atom selection;
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void *clientData;
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WMSelectionProc *proc;
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WMHandlerID timerID;
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W_SelectionHandler *next;
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W_SelectionHandler *prev;
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} W_SelectionHandler;
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#endif
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#define SELECTION_TIMEOUT 2000
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#define MAX_PROPERTY_SIZE 10*1024
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#if 0
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void
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WMWriteSelectionToClipboard(WMSelection *selection)
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{
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}
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WMSelection*
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WMCreateSelectionWithData(WMData *data, Atom type)
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{
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}
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#endif
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#if 0
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#define MAX_PROPERTY_SIZE 100*1024
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static void
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handleSelectionEvent(XEvent *event, void *data)
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{
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W_SelectionHandler *handler = (W_SelectionHandler*)data;
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char *data = NULL;
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Atom type;
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int format, result;
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unsigned long numItems, bytesAfter;
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WMScreen *scr = WMWidgetScreen(handler->widget);
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WMDeleteTimerHandler(handler->timerID);
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if (handler->next)
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handler->next->prev = handler->prev;
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if (handler->prev)
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handler->prev->next = handler->next;
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if (handler == WMWidgetScreen(handler->widget)->selectionHandlerList)
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WMWidgetScreen(handler->widget)->selectionHandlerList = handler->next;
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if (event->xselection.property == None) {
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char *name = XGetAtomName(event->xselection.display,
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handler->selection);
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char *form = XGetAtomName(event->xselection.display, handler->type);
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wwarning("error retrieving selection %s with form %s\n", name, form);
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if (name)
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XFree(name);
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if (form)
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XFree(form);
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free(handler);
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return;
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}
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if (XGetWindowProperty(event->xselection.display,
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event->xselection.requestor, handler->property,
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0, MAX_PROPERTY_SIZE, False, AnyPropertyType,
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&type, &format, &numItems, &bytesAfter,
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&data) != Success || type == None) {
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if (data)
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XFree(data);
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free(handler);
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return;
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}
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if (bytesAfter!=0) {
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wwarning("data in selection is too large");
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if (data)
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XFree(data);
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free(handler);
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return;
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}
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if (type == XA_STRING || type == scr->compoundTextAtom) {
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if (format!=8) {
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wwarning("string in selection has format %i, which is invalid",
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format);
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if (data)
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XFree(data);
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free(handler);
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return;
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}
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(*handler->proc)();
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}
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}
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static void
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timeoutHandler(void *data)
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{
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W_SelectionHandler *handler = (W_SelectionHandler*)data;
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wwarning("selection timed out");
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WMDeleteEventHandler(WMWidgetView(handler->widget), SelectionNotifyMask,
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handleSelectionEvent, data);
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if (handler->next)
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handler->next->prev = handler->prev;
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if (handler->prev)
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handler->prev->next = handler->next;
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if (handler == WMWidgetScreen(handler->widget)->selectionHandlerList)
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WMWidgetScreen(handler->widget)->selectionHandlerList = handler->next;
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}
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void
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WMGetSelection(WMWidget *widget, Atom selection, Atom type, Atom property,
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WMSelectionProc *proc, void *clientData, Time time)
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{
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WMScreen *scr = WMWidgetScreen(widget);
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void *data;
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Atom rtype;
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int bits;
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unsigned long len, bytes;
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unsigned char *data;
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int buffer = -1;
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switch (selection) {
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case XA_CUT_BUFFER0:
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buffer = 0;
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break;
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case XA_CUT_BUFFER1:
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buffer = 1;
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break;
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case XA_CUT_BUFFER2:
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buffer = 2;
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break;
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case XA_CUT_BUFFER3:
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buffer = 3;
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break;
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case XA_CUT_BUFFER4:
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buffer = 4;
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break;
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case XA_CUT_BUFFER5:
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buffer = 5;
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break;
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case XA_CUT_BUFFER6:
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buffer = 6;
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break;
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case XA_CUT_BUFFER7:
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buffer = 7;
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break;
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}
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if (buffer >= 0) {
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char *data;
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int size;
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data = XFetchBuffer(scr->display, &size, buffer);
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} else {
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W_SelectionHandler *handler;
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XDeleteProperty(scr->display, WMWidgetXID(widget), selection);
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XConvertSelection(scr->display, selection, type, property,
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WMWidgetXID(widget), time);
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handler = wmalloc(sizeof(W_SelectionHandler));
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handler->widget = widget;
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handler->selection = selection;
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handler->type = type;
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handler->property = property;
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handler->clientData = clientData;
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handler->proc = proc;
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handler->timerID = WMAddTimerHandler(SELECTION_TIMEOUT,
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timeoutHandler, handler);
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handler->next = scr->selectionHandlerList;
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handler->prev = NULL;
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if (scr->selectionHandlerList)
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scr->selectionHandlerList->prev = handler;
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scr->selectionHandlerList = handler;
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WMCreateEventHandler(WMWidgetView(widget), SelectionNotifyMask,
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handleSelectionEvent, handler);
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}
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}
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#endif
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static void
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timeoutHandler(void *data)
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{
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*(int*)data = 1;
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}
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char*
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W_GetTextSelection(WMScreen *scr, Atom selection)
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{
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int buffer = -1;
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switch (selection) {
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case XA_CUT_BUFFER0:
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buffer = 0;
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break;
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case XA_CUT_BUFFER1:
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buffer = 1;
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break;
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case XA_CUT_BUFFER2:
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buffer = 2;
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break;
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case XA_CUT_BUFFER3:
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buffer = 3;
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break;
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case XA_CUT_BUFFER4:
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buffer = 4;
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break;
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case XA_CUT_BUFFER5:
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buffer = 5;
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break;
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case XA_CUT_BUFFER6:
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buffer = 6;
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break;
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case XA_CUT_BUFFER7:
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buffer = 7;
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break;
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}
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if (buffer >= 0) {
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char *data;
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int size;
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data = XFetchBuffer(scr->display, &size, buffer);
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return data;
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} else {
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unsigned char *data;
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int bits;
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Atom rtype;
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unsigned long len, bytes;
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WMHandlerID timer;
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int timeout = 0;
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XEvent ev;
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XDeleteProperty(scr->display, scr->groupLeader, scr->clipboardAtom);
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XConvertSelection(scr->display, selection, XA_STRING,
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scr->clipboardAtom, scr->groupLeader,
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scr->lastEventTime);
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timer = WMAddTimerHandler(1000, timeoutHandler, &timeout);
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while (!XCheckTypedWindowEvent(scr->display, scr->groupLeader,
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SelectionNotify, &ev) && !timeout);
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if (!timeout) {
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WMDeleteTimerHandler(timer);
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} else {
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wwarning("selection retrieval timed out");
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return NULL;
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}
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/* nobody owns the selection */
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if (ev.xselection.property == None) {
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return NULL;
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}
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if (XGetWindowProperty(scr->display, scr->groupLeader,
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scr->clipboardAtom, 0, MAX_PROPERTY_SIZE,
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False, XA_STRING, &rtype, &bits, &len,
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&bytes, &data)!=Success) {
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return NULL;
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}
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if (rtype!=XA_STRING || bits!=8) {
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wwarning("invalid data in text selection");
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if (data)
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XFree(data);
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return NULL;
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}
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return data;
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}
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}
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