/*****************************************************************************    Copyright (C) 1994,1997 Ivan A. Curtis.  All rights reserved.This code must not be re-distributed without these copyright notices intact.**************************************************************************************************************************************************************Filename:	~icurtis/src/mx/buttons.cDescription:	Update History:   (most recent first)   I. Curtis   9-Apr-97 12:02 -- Updated   I. Curtis  22-Mar-94 23:11 -- Created.******************************************************************************/#include "basic.h"#include "alert.h"#include "menu.h"#include "buttons.h"/************************************** * Handle an event for a button panel * **************************************/int mx_button_event(Display *display, int screen, XEvent *event,		    mx_button *button, int *done, int *x, int *y){  int bx, by, bit, mask;  switch(event->type) {  case Expose:    if (event->xexpose.window == button->window) {      mx_items_draw(display, button->window, button->app,		    button->item, button->first_item, 		    button->last_item - button->first_item + 1, 		    button->width, button->height,		    button->app->button_width + 2 * button->app->item_border,		    0);      bx = button->app->item_border,      by = (button->height - button->app->button_height) / 2;      mask = 1;      for (bit = 0; bit < button->last_item - button->first_item; bit ++) {	if (button->value & mask)	  XCopyPlane(display, button->app->button, button->window, 		     button->app->gcd, 0, 0,		     button->app->button_width, button->app->button_height,		     bx, by, 0x01);	mask = mask << 1;	by += button->height;      }      return True;    }    break;  case ButtonPress:    if (event->xbutton.window == button->window) {      button->cur_y = event->xbutton.y / button->height;      bit = button->cur_y + button->first_item;      mask = 1 << bit;      if (!(button->item[button->cur_y + button->first_item].flag &	    MXItemFlag_Disabled)) {	button->value ^= mask;	XCopyPlane(display, button->app->button, button->window, 		   button->app->gcf, 0, 0,		   button->app->button_width, button->app->button_height,		   button->app->item_border,		   (button->height - button->app->button_height) / 2 +		   button->height * button->cur_y, 		   0x01);      }      return True;    }    break;  default:    break;  }  return False;}/*********************************************** * Pop up a list of buttons on the root window * * at position x, y                            * ***********************************************/int mx_popup_button(Display *display, int screen, mx_panel *panel,		    unsigned int value, int *x, int *y){  XEvent event;  mx_alert title;  mx_button button;  int done;  if (!panel)    return -1;  button.app = panel->app;  button.width = panel->width + panel->app->button_width +    3 * panel->app->item_border;  if (button.app->button_height > panel->height)    button.height = button.app->button_height + 2 * panel->app->item_border;  else    button.height = panel->height + 2 * panel->app->item_border;  button.first_item = 0;  button.last_item = panel->last_item - panel->first_item - 1;  button.item = panel->item + panel->first_item + 1;  button.value = value;  title.app = panel->app;  title.width = button.width;  title.height = panel->height + 2 * panel->app->item_border;  title.start_item = panel->first_item;;  title.max_items = 1;  title.item = panel->item;				/* make sure the windows are on screen */  mx_adjust_xy(display, title.width + 2 * title.app->win_border,	       (title.height +		button.height * (button.last_item - button.first_item + 1) +		3 * title.app->win_border),	       x, y);				/* open the title window */  title.window =    mx_transient_window_open(display, screen, panel->app->win_border, *x, *y,			  title.width, title.height);  XSelectInput(display, title.window, ExposureMask | OwnerGrabButtonMask |	       ButtonPressMask | ButtonReleaseMask |	       EnterWindowMask | LeaveWindowMask);  title.inside = -1;  title.momentary = 0;				/* open the button window */  button.window =    mx_transient_window_open(display, screen, panel->app->win_border, 			     *x, *y + title.height + title.app->win_border,			     button.width,			     button.height * (button.last_item - button.first_item + 1));  XSelectInput(display, button.window, ExposureMask | OwnerGrabButtonMask |	       ButtonPressMask | ButtonReleaseMask |	       EnterWindowMask | LeaveWindowMask);  button.inside = False;  done = 0;  while (!done) {    XNextEvent(display, &event);    if (mx_alert_event(display, screen, &event, &title, &done, x, y))      continue;    if (mx_button_event(display, screen, &event, &button, &done, x, y))      continue;    if (event.type == Expose && panel->app->expose_fun) {      if ((*(panel->app->expose_fun))(&event))	continue;    }  }  mx_window_close(display, title.window);  mx_window_close(display, button.window);  return button.value;}