MenuButton.c File Reference

#include <stdio.h>
#include <X11/IntrinsicP.h>
#include <X11/StringDefs.h>
#include <X11/Xaw3d/XawInit.h>
#include <X11/Xaw3d/MenuButtoP.h>

Include dependency graph for MenuButton.c:

Go to the source code of this file.

Defines
#define	superclass   ((CommandWidgetClass)&commandClassRec)
#define	offset(field)   XtOffsetOf(MenuButtonRec, field)
Functions
static void	ClassInitialize ()
static void	PopupMenu ()
static void	PopupMenu (Widget w, XEvent *event, String *params, Cardinal *num_params)
Variables
static char	defaultTranslations []
static XtResource	resources []
static XtActionsRec	actionsList []
MenuButtonClassRec	menuButtonClassRec
WidgetClass	menuButtonWidgetClass = (WidgetClass) &menuButtonClassRec

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Define Documentation

#define offset

(

field

)

XtOffsetOf(MenuButtonRec, field)

Definition at line 74 of file MenuButton.c.

#define superclass   ((CommandWidgetClass)&commandClassRec)

Definition at line 59 of file MenuButton.c.

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Function Documentation

static void ClassInitialize

(

)

[static]

Definition at line 148 of file MenuButton.c.

References PopupMenu(), and XawInitializeWidgetSet().

{
    XawInitializeWidgetSet();
    XtRegisterGrabAction(PopupMenu, True, 
                         (unsigned int)(ButtonPressMask | ButtonReleaseMask),
                         GrabModeAsync, GrabModeAsync);
}

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static void PopupMenu	(	Widget	w,
		XEvent *	event,
		String *	params,
		Cardinal *	num_params
	)			[static]

Definition at line 158 of file MenuButton.c.

References _MenuButtonRec::menu_button, MenuButtonPart::menu_name, NULL, and void().

{
  MenuButtonWidget mbw = (MenuButtonWidget) w;
  Widget menu = NULL, temp;
  Arg arglist[2];
  Cardinal num_args;
  int menu_x, menu_y, menu_width, menu_height, button_height;
  Position button_x, button_y;

  temp = w;
  while(temp != NULL) {
    menu = XtNameToWidget(temp, mbw->menu_button.menu_name);
    if (menu == NULL) 
      temp = XtParent(temp);
    else
      break;
  }

  if (menu == NULL) {
    char error_buf[BUFSIZ];
    (void) sprintf(error_buf, "MenuButton: %s %s.",
            "Could not find menu widget named", mbw->menu_button.menu_name);
    XtAppWarning(XtWidgetToApplicationContext(w), error_buf);
    return;
  }
  if (!XtIsRealized(menu))
    XtRealizeWidget(menu);
  
  menu_width = menu->core.width + 2 * menu->core.border_width;
  button_height = w->core.height + 2 * w->core.border_width;
  menu_height = menu->core.height + 2 * menu->core.border_width;

  XtTranslateCoords(w, 0, 0, &button_x, &button_y);
  menu_x = button_x;
  menu_y = button_y + button_height;

  if (menu_x >= 0) {
    int scr_width = WidthOfScreen(XtScreen(menu));
    if (menu_x + menu_width > scr_width)
      menu_x = scr_width - menu_width;
  }
  if (menu_x < 0) 
    menu_x = 0;

  if (menu_y >= 0) {
    int scr_height = HeightOfScreen(XtScreen(menu));
    if (menu_y + menu_height > scr_height)
      menu_y = scr_height - menu_height;
  }
  if (menu_y < 0)
    menu_y = 0;

  num_args = 0;
  XtSetArg(arglist[num_args], XtNx, menu_x); num_args++;
  XtSetArg(arglist[num_args], XtNy, menu_y); num_args++;
  XtSetValues(menu, arglist, num_args);

  XtPopupSpringLoaded(menu);
}

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static void PopupMenu

(

)

[static]

Referenced by ClassInitialize().

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Variable Documentation

XtActionsRec actionsList[] [static]

Initial value:

{
  {"PopupMenu", PopupMenu}
}

Definition at line 82 of file MenuButton.c.

char defaultTranslations[] [static]

Initial value:

 
"<EnterWindow>: highlight()\n\
 <LeaveWindow>: reset()\n\
 Any<BtnDown>:  reset() PopupMenu()"

Definition at line 61 of file MenuButton.c.

MenuButtonClassRec menuButtonClassRec

Definition at line 87 of file MenuButton.c.

WidgetClass menuButtonWidgetClass = (WidgetClass) &menuButtonClassRec

Definition at line 140 of file MenuButton.c.

XtResource resources[] [static]

Initial value:

 {
  {
    XtNmenuName, XtCMenuName, XtRString, sizeof(String), 
    offset(menu_button.menu_name), XtRString, (XtPointer)"menu"},
}

Definition at line 75 of file MenuButton.c.

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