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2020-04-06 17:04:05 +00:00
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WINGs_tutorial/NinthWindow.c Normal file
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#include "editmenu.h" /* This must be the MODIFIED .h file */
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
#define WINWIDTH 300
#define WINHEIGHT 400
#define MENUWIDTH 85
#define MENITEMHT 21
#define LOGPROGRAM "xconsole"
#define ERRMSGFIFO "/tmp/WINGsWindowfifo"
#define FIFONAMELEN 20
#define NOLOGWINDOW (-2) /* value when there is no console window */
#define FIFOERROR (-1) /* value when there is a problem w/ console */
#define FIFOLOWESTPOSS 0
int windowCounter=0;
int fifonr;
int sibpid;
char fifofilename[FIFONAMELEN+5];
struct dataStruct{
WMWindow *window;
WEditMenu *menu;
} dataStruct;
/* functions for the message window part: */
void redirectmsg(int sig){
// clean up after SIGCHLD, and set fifonr to flag it
fifonr=NOLOGWINDOW;
if (!access(fifofilename,F_OK|W_OK))
unlink(fifofilename);
return;
}
int showMessageWindow(){
sprintf(fifofilename,"%s%i",ERRMSGFIFO,(unsigned short)getpid());
(void) signal(SIGCHLD,redirectmsg); // clean up if message console is killed
if(access(fifofilename,F_OK)==-1)
fifonr=mknod(fifofilename,0640|O_EXCL|S_IFIFO,(dev_t)0);
else {fifonr=FIFOERROR;
wwarning("Fifo file already exists\n");
}
/* fifonr == FIFOERROR if mknod/mkfifo or access failed, mknod returns -1 on failure */
if(fifonr!=FIFOERROR){
sibpid=fork();
if(sibpid==0){
execlp(LOGPROGRAM , LOGPROGRAM, "-file",fifofilename,"-geometry","250x400", "-title","Window Messages",(char *)0);
exit(1);
}else
fifonr=open(fifofilename,O_WRONLY);
}
return fifonr;
}
/* general and menu handling functions */
void closeAll(WMWidget *self,void *data){
WMDestroyWidget(self);
if(--windowCounter<1){
if (fifonr>=FIFOLOWESTPOSS)
kill(sibpid,SIGTERM);
if (!access(fifofilename,F_OK|W_OK))
unlink(fifofilename);
exit(0);
}
}
void menuItemAction(void *self, void *data){
if (fifonr<FIFOLOWESTPOSS)fifonr=showMessageWindow(); // try again in case FIFOERROR
if (fifonr==FIFOERROR) // give up and print to stderr
fprintf(stderr,"%i: %s selected\n", getpid(), WGetEditMenuItemTitle(self));
else{
char textbuffer[100];
snprintf(textbuffer,100, "%i: %s selected\n", getpid(), WGetEditMenuItemTitle(self));
write(fifonr, textbuffer,strlen(textbuffer));
}
}
void menuItemCloseAction(void *self, void *data){
WMPostNotificationName("WMWindowClose", self, NULL);
}
void getMenu(WMWidget *self, void *data){
WMPoint position;
struct dataStruct *tmp=(struct dataStruct *)data;
if(WMGetButtonSelected(self)){
position=WMGetViewScreenPosition(WMWidgetView(tmp->window));
WEditMenuShowAt(tmp->menu,(position.x>MENUWIDTH)?position.x-MENUWIDTH:0, position.y+MENITEMHT,tmp->window);
}else{
WEditMenuHide(tmp->menu);
WDeselectItem(tmp->menu); // remove selection before next pop up
}
}
static void notificationHandler(void *self, WMNotification *notif){
if(!strcmp("WMWindowClose",WMGetNotificationName(notif)))
closeAll(self,NULL);
if(!strcmp(WMViewSizeDidChangeNotification,WMGetNotificationName(notif))){
//resize actions
WMSize size = WMGetViewSize(WMWidgetView(self));
}
}
/* main widget creating functions */
WMWindow * makeMainwindow(Display *display, WMScreen *screen){
WMWindow *window;
window = WMCreateWindow(screen, "Menu");
WMResizeWidget(window, WINWIDTH, WINHEIGHT);
WMSetWindowCloseAction(window, closeAll, NULL);
WMAddNotificationObserver(notificationHandler, window, "WMWindowClose", WMWidgetView(window));
WMSetViewNotifySizeChanges(WMWidgetView(window), True);
WMAddNotificationObserver(notificationHandler, window, WMViewSizeDidChangeNotification, WMWidgetView(window));
WMAddNotificationObserver(notificationHandler, window, "WMWindowClose", NULL);
WMRealizeWidget(window);
return window;
}
WEditMenu * makeMenus(WMScreen *screen,WEditMenu *menu, WEditMenu *submenu){
WEditMenuItem * menuitem;
submenu=WCreateEditMenu(screen,"Submenu");
menuitem =WAddMenuItemWithTitle(submenu,"Submenu item");
WSetEditMenuItemAction( menuitem, menuItemAction);
menuitem =WAddMenuItemWithTitle(submenu,"2nd submenu item");
WSetEditMenuItemAction( menuitem, menuItemAction);
menuitem =WAddMenuItemWithTitle(submenu,"3d submenu item");
WSetEditMenuItemAction( menuitem, menuItemAction);
menu=WCreateEditMenu(screen,"Main menu");
menuitem = WAddMenuItemWithTitle(menu,"1st main item");
WSetEditMenuItemAction( menuitem, menuItemAction);
menuitem = WAddMenuItemWithTitle(menu,"2nd main item");
WSetEditMenuItemAction( menuitem, menuItemAction);
menuitem = WAddMenuItemWithTitle(menu,"To submenu");
WSetEditMenuSubmenu(menu, menuitem , submenu);
menuitem = WAddMenuItemWithTitle(menu,"Quit");
WSetEditMenuItemAction( menuitem, menuItemCloseAction);
WMRealizeWidget(submenu);WMRealizeWidget(menu);
return menu;
}
WMButton * makeButtonsTop( WMWidget *window, void *AppData){
WMButton *Button;
Button =WMCreateButton(window,WBTPushOnPushOff);
WMSetButtonText (Button, "Menu");
WMSetButtonAction (Button, getMenu, AppData);
WMMoveWidget(Button, 4,2);
WMRealizeWidget(Button);
return Button;
}
int main (int argc, char **argv){
Display *display;
WMScreen *screen;
WMWindow *mainwindow;
WEditMenu *submenu, *menu;
WEditMenuItem * menuitem;
struct dataStruct Mainmenu;
WMButton *menubutton;
fifonr=NOLOGWINDOW;
WMInitializeApplication("MenuWindow", &argc, argv);
display = XOpenDisplay("");
screen = WMCreateScreen(display, DefaultScreen(display));
mainwindow= makeMainwindow(display, screen) ;
menu=makeMenus(screen,menu,submenu);
Mainmenu.window=mainwindow;
Mainmenu.menu=menu;
menubutton=makeButtonsTop(mainwindow, &Mainmenu);
WMMapSubwidgets(mainwindow);
WMMapWidget(mainwindow);
WMScreenMainLoop(screen);
return 0;
}