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/* This file is part of the Project Athena Zephyr Notification System.
* It is one of the source files comprising zwgc, the Zephyr WindowGram
* client.
*
* Created by: Marc Horowitz <marc@athena.mit.edu>
*
* $Source$
* $Author$
*
* Copyright (c) 1989 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
#if (!defined(lint) && !defined(SABER))
static char rcsid_xcut_c[] = "$Id$";
#endif
#include <zephyr/mit-copyright.h>
/****************************************************************************/
/* */
/* Code to deal with handling X events: */
/* */
/****************************************************************************/
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include "new_memory.h"
#include "new_string.h"
#include "X_gram.h"
#include <stdio.h>
#include "zwgc.h"
#include "xselect.h"
#include "xmark.h"
#include "error.h"
#include "xrevstack.h"
/*
*
*/
extern char *xmarkGetText();
static char *selected_text=NULL;
static Window selecting_in = 0;
char *getSelectedText()
{
return(selected_text);
}
#ifdef notdef
static string x_gram_to_string(gram)
x_gram *gram;
{
int i, index, len;
int last_y = -1;
string temp;
string text_so_far = string_Copy("");
char *text;
text = gram->text;
for (i=0; i<gram->numblocks; i++) {
if (last_y != -1 && last_y != gram->blocks[i].y)
text_so_far = string_Concat2(text_so_far, "\n");
index = gram->blocks[i].strindex;
len = gram->blocks[i].strlen;
temp = string_CreateFromData(text+index, len);
text_so_far = string_Concat2(text_so_far, temp);
free(temp);
last_y = gram->blocks[i].y;
}
text_so_far = string_Concat2(text_so_far, "\n");
return(text_so_far);
}
#endif
/*
*
*/
/*ARGSUSED*/
Bool isShiftButton1(dpy,event,arg)
Display *dpy;
XEvent *event;
char *arg;
{
return(event->xbutton.state & (ShiftMask|Button1Mask));
}
/*ARGSUSED*/
Bool isShiftButton3(dpy,event,arg)
Display *dpy;
XEvent *event;
char *arg;
{
return(event->xbutton.state & (ShiftMask|Button3Mask));
}
void getLastEvent(dpy,state,event)
Display *dpy;
unsigned int state;
XEvent *event;
{
XEvent xev;
if (state & Button1Mask) {
while(XCheckIfEvent(dpy,&xev,isShiftButton1,NULL))
*event=xev;
} else if (state & Button3Mask) {
while(XCheckIfEvent(dpy,&xev,isShiftButton3,NULL))
*event=xev;
}
}
void xunmark(dpy,w,gram,desc_context)
Display *dpy;
Window w;
x_gram *gram;
XContext desc_context;
{
if (gram == NULL)
if (XFindContext(dpy, w, desc_context, (caddr_t *) &gram))
return;
xmarkClear();
xmarkRedraw(dpy,w,gram,XMARK_REDRAW_OLD);
}
void xcut(dpy,event,desc_context)
Display *dpy;
XEvent *event;
XContext desc_context;
{
x_gram *gram;
Window w = event->xany.window;
static int current_window_in = -1;
int changedbound;
/*
* If event is for a window that's not ours anymore (say we're
* in the process of deleting it...), ignore it:
*/
if (XFindContext(dpy, w, desc_context, (caddr_t *) &gram))
return;
/*
* Dispatch on the event type:
*/
switch(event->type) {
case EnterNotify:
current_window_in = w;
break;
case LeaveNotify:
current_window_in = -1;
break;
case MotionNotify:
if (w == selecting_in) {
if (event->xmotion.state==(ShiftMask|Button1Mask)) {
/* getLastEvent(dpy,Button1Mask,event); */
changedbound=xmarkExtendFromFirst(gram,event->xmotion.x,
event->xmotion.y);
xmarkRedraw(dpy,w,gram,changedbound);
} else if (event->xmotion.state==(ShiftMask|Button3Mask)) {
/* getLastEvent(dpy,Button3Mask,event); */
changedbound=xmarkExtendFromNearest(gram,event->xmotion.x,
event->xmotion.y);
xmarkRedraw(dpy,w,gram,changedbound);
}
}
break;
case ButtonPress:
if ( (event->xbutton.state)&ShiftMask ) {
if (event->xbutton.button==Button1) {
if (selecting_in)
xunmark(dpy,selecting_in,NULL,desc_context);
if (selected_text) free(selected_text);
selected_text = NULL;
if (! xselGetOwnership(dpy,w,event->xbutton.time)) {
XBell(dpy,0);
ERROR("Unable to get ownership of PRIMARY selection.\n");
selecting_in = 0;
} else {
selecting_in = w;
xmarkStart(gram,event->xbutton.x,event->xbutton.y);
}
}
if ((event->xbutton.button==Button3) && (w == selecting_in)) {
if (selected_text) free(selected_text);
selected_text = NULL;
changedbound=xmarkExtendFromNearest(gram,event->xbutton.x,
event->xbutton.y);
xmarkRedraw(dpy,w,gram,changedbound);
selected_text = xmarkGetText();
}
} else {
current_window_in = w;
}
break;
case ButtonRelease:
if (w == current_window_in && !((event->xbutton.state)&ShiftMask)) {
if (w == selecting_in) {
selecting_in = 0;
xmarkClear();
}
if (reverse_stack && (gram == bottom_gram))
bottom_gram = gram;
XDeleteContext(dpy, w, desc_context);
XDestroyWindow(dpy, w);
if (reverse_stack)
delete_gram(gram);
free(gram->text);
free(gram->blocks);
free(gram);
} else if (w == selecting_in) {
if (selected_text) free(selected_text);
selected_text = xmarkGetText();
}
break;
case SelectionRequest:
xselProcessSelection(dpy,w,event);
break;
case SelectionClear:
xselOwnershipLost(event->xselectionclear.time);
if (w == selecting_in) {
selecting_in = 0;
xunmark(dpy,w,gram,desc_context);
if (selected_text) free(selected_text);
selected_text = NULL;
}
break;
#ifdef notdef
case ConfigureNotify:
#ifdef DEBUG
if (zwgc_debug)
printf("ConfigureNotify received for wid %lx above wid %lx\n",
(long) w,(long) event->xconfigure.above);
#endif
if (gram->above==gram) {
/* a new zgram. Straight to the bottom! */
add_to_bottom(gram);
} else if (event->xconfigure.above) {
/* some zgram was pulled to the top */
pull_to_top(gram);
} else {
/* Some zgram was pushed to the bottom */
push_to_bottom(gram);
}
/* Note that there is no option to configure a zgram to the middle */
break;
#endif
}
XFlush(dpy);
}
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