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emacs/lwlib/xlwmenu.c
Paul Eggert ab422c4d68 Update copyright notices for 2013.
2013-01-01 09:11:05 +00:00

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/* Implements a lightweight menubar widget.
Copyright (C) 1992 Lucid, Inc.
Copyright (C) 1994-1995, 1997, 1999-2013 Free Software Foundation, Inc.
This file is part of the Lucid Widget Library.
The Lucid Widget Library is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
The Lucid Widget Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
/* Created by devin@lucid.com */
#include <config.h>
#include <setjmp.h>
#include <lisp.h>
#include <stdio.h>
#include <sys/types.h>
#if (defined __sun) && !(defined SUNOS41)
#define SUNOS41
#include <X11/Xos.h>
#undef SUNOS41
#else
#include <X11/Xos.h>
#endif
#include <X11/IntrinsicP.h>
#include <X11/ObjectP.h>
#include <X11/StringDefs.h>
#include <X11/cursorfont.h>
#include <X11/Shell.h>
#include "xlwmenuP.h"
#ifdef emacs
#include <xterm.h>
#include "bitmaps/gray.xbm"
#else /* not emacs */
#include <X11/bitmaps/gray>
#endif /* not emacs */
static int pointer_grabbed;
static XEvent menu_post_event;
static char
xlwMenuTranslations [] =
"<BtnDown>: start()\n\
<Motion>: drag()\n\
<BtnUp>: select()\n\
<Key>Shift_L: nothing()\n\
<Key>Shift_R: nothing()\n\
<Key>Meta_L: nothing()\n\
<Key>Meta_R: nothing()\n\
<Key>Control_L: nothing()\n\
<Key>Control_R: nothing()\n\
<Key>Hyper_L: nothing()\n\
<Key>Hyper_R: nothing()\n\
<Key>Super_L: nothing()\n\
<Key>Super_R: nothing()\n\
<Key>Alt_L: nothing()\n\
<Key>Alt_R: nothing()\n\
<Key>Caps_Lock: nothing()\n\
<Key>Shift_Lock: nothing()\n\
<KeyUp>Shift_L: nothing()\n\
<KeyUp>Shift_R: nothing()\n\
<KeyUp>Meta_L: nothing()\n\
<KeyUp>Meta_R: nothing()\n\
<KeyUp>Control_L: nothing()\n\
<KeyUp>Control_R: nothing()\n\
<KeyUp>Hyper_L: nothing()\n\
<KeyUp>Hyper_R: nothing()\n\
<KeyUp>Super_L: nothing()\n\
<KeyUp>Super_R: nothing()\n\
<KeyUp>Alt_L: nothing()\n\
<KeyUp>Alt_R: nothing()\n\
<KeyUp>Caps_Lock: nothing()\n\
<KeyUp>Shift_Lock:nothing()\n\
<Key>Return: select()\n\
<Key>Down: down()\n\
<Key>Up: up()\n\
<Key>Left: left()\n\
<Key>Right: right()\n\
<Key>: key()\n\
<KeyUp>: key()\n\
";
/* FIXME: Space should toggle togglable menu item but not remove the menu
so you can toggle the next one without entering the menu again. */
/* FIXME: Should ESC close one level of menu structure or the complete menu? */
/* FIXME: F10 should enter the menu, the first one in the menu-bar. */
#define offset(field) XtOffset(XlwMenuWidget, field)
static XtResource
xlwMenuResources[] =
{
#ifdef HAVE_X_I18N
{XtNfontSet, XtCFontSet, XtRFontSet, sizeof(XFontSet),
offset(menu.fontSet), XtRFontSet, NULL},
#endif
#ifdef HAVE_XFT
#define DEFAULT_FONTNAME "Sans-10"
#else
#define DEFAULT_FONTNAME "XtDefaultFont"
#endif
{XtNfont, XtCFont, XtRString, sizeof(String),
offset(menu.fontName), XtRString, DEFAULT_FONTNAME },
{XtNforeground, XtCForeground, XtRPixel, sizeof(Pixel),
offset(menu.foreground), XtRString, "XtDefaultForeground"},
{XtNdisabledForeground, XtCDisabledForeground, XtRPixel, sizeof(Pixel),
offset(menu.disabled_foreground), XtRString, (XtPointer)NULL},
{XtNbuttonForeground, XtCButtonForeground, XtRPixel, sizeof(Pixel),
offset(menu.button_foreground), XtRString, "XtDefaultForeground"},
{XtNmargin, XtCMargin, XtRDimension, sizeof(Dimension),
offset(menu.margin), XtRImmediate, (XtPointer)1},
{XtNhorizontalSpacing, XtCMargin, XtRDimension, sizeof(Dimension),
offset(menu.horizontal_spacing), XtRImmediate, (XtPointer)3},
{XtNverticalSpacing, XtCMargin, XtRDimension, sizeof(Dimension),
offset(menu.vertical_spacing), XtRImmediate, (XtPointer)2},
{XtNarrowSpacing, XtCMargin, XtRDimension, sizeof(Dimension),
offset(menu.arrow_spacing), XtRImmediate, (XtPointer)10},
{XmNshadowThickness, XmCShadowThickness, XtRDimension,
sizeof (Dimension), offset (menu.shadow_thickness),
XtRImmediate, (XtPointer)1},
{XmNtopShadowColor, XmCTopShadowColor, XtRPixel, sizeof (Pixel),
offset (menu.top_shadow_color), XtRImmediate, (XtPointer)-1},
{XmNbottomShadowColor, XmCBottomShadowColor, XtRPixel, sizeof (Pixel),
offset (menu.bottom_shadow_color), XtRImmediate, (XtPointer)-1},
{XmNtopShadowPixmap, XmCTopShadowPixmap, XtRPixmap, sizeof (Pixmap),
offset (menu.top_shadow_pixmap), XtRImmediate, (XtPointer)None},
{XmNbottomShadowPixmap, XmCBottomShadowPixmap, XtRPixmap, sizeof (Pixmap),
offset (menu.bottom_shadow_pixmap), XtRImmediate, (XtPointer)None},
{XtNopen, XtCCallback, XtRCallback, sizeof(XtPointer),
offset(menu.open), XtRCallback, (XtPointer)NULL},
{XtNselect, XtCCallback, XtRCallback, sizeof(XtPointer),
offset(menu.select), XtRCallback, (XtPointer)NULL},
{XtNhighlightCallback, XtCCallback, XtRCallback, sizeof(XtPointer),
offset(menu.highlight), XtRCallback, (XtPointer)NULL},
{XtNenterCallback, XtCCallback, XtRCallback, sizeof(XtPointer),
offset(menu.enter), XtRCallback, (XtPointer)NULL},
{XtNleaveCallback, XtCCallback, XtRCallback, sizeof(XtPointer),
offset(menu.leave), XtRCallback, (XtPointer)NULL},
{XtNmenu, XtCMenu, XtRPointer, sizeof(XtPointer),
offset(menu.contents), XtRImmediate, (XtPointer)NULL},
{XtNcursor, XtCCursor, XtRCursor, sizeof(Cursor),
offset(menu.cursor_shape), XtRString, (XtPointer)"right_ptr"},
{XtNhorizontal, XtCHorizontal, XtRInt, sizeof(int),
offset(menu.horizontal), XtRImmediate, (XtPointer)True},
};
#undef offset
static Boolean XlwMenuSetValues(Widget current, Widget request, Widget new,
ArgList args, Cardinal *num_args);
static void XlwMenuRealize(Widget, Mask *, XSetWindowAttributes *);
static void XlwMenuResize(Widget w);
static void XlwMenuInitialize(Widget, Widget, ArgList, Cardinal *);
static void XlwMenuRedisplay(Widget w, XEvent *ev, Region region);
static void XlwMenuDestroy(Widget w);
static void XlwMenuClassInitialize(void);
static void Start(Widget w, XEvent *ev, String *params, Cardinal *num_params);
static void Drag(Widget w, XEvent *ev, String *params, Cardinal *num_params);
static void Down(Widget w, XEvent *ev, String *params, Cardinal *num_params);
static void Up(Widget w, XEvent *ev, String *params, Cardinal *num_params);
static void Left(Widget w, XEvent *ev, String *params, Cardinal *num_params);
static void Right(Widget w, XEvent *ev, String *params, Cardinal *num_params);
static void Select(Widget w, XEvent *ev, String *params, Cardinal *num_params);
static void Key(Widget w, XEvent *ev, String *params, Cardinal *num_params);
static void Nothing(Widget w, XEvent *ev, String *params, Cardinal *num_params);
static int separator_height (enum menu_separator);
static void pop_up_menu (XlwMenuWidget, XButtonPressedEvent *);
static XtActionsRec
xlwMenuActionsList [] =
{
{"start", Start},
{"drag", Drag},
{"down", Down},
{"up", Up},
{"left", Left},
{"right", Right},
{"select", Select},
{"key", Key},
{"MenuGadgetEscape", Key}, /* Compatibility with Lesstif/Motif. */
{"nothing", Nothing},
};
#define SuperClass ((CoreWidgetClass)&coreClassRec)
XlwMenuClassRec xlwMenuClassRec =
{
{ /* CoreClass fields initialization */
(WidgetClass) SuperClass, /* superclass */
"XlwMenu", /* class_name */
sizeof(XlwMenuRec), /* size */
XlwMenuClassInitialize, /* class_initialize */
NULL, /* class_part_initialize */
FALSE, /* class_inited */
XlwMenuInitialize, /* initialize */
NULL, /* initialize_hook */
XlwMenuRealize, /* realize */
xlwMenuActionsList, /* actions */
XtNumber(xlwMenuActionsList), /* num_actions */
xlwMenuResources, /* resources */
XtNumber(xlwMenuResources), /* resource_count */
NULLQUARK, /* xrm_class */
TRUE, /* compress_motion */
XtExposeCompressMaximal, /* compress_exposure */
TRUE, /* compress_enterleave */
FALSE, /* visible_interest */
XlwMenuDestroy, /* destroy */
XlwMenuResize, /* resize */
XlwMenuRedisplay, /* expose */
XlwMenuSetValues, /* set_values */
NULL, /* set_values_hook */
XtInheritSetValuesAlmost, /* set_values_almost */
NULL, /* get_values_hook */
NULL, /* accept_focus */
XtVersion, /* version */
NULL, /* callback_private */
xlwMenuTranslations, /* tm_table */
XtInheritQueryGeometry, /* query_geometry */
XtInheritDisplayAccelerator, /* display_accelerator */
NULL /* extension */
}, /* XlwMenuClass fields initialization */
{
0 /* dummy */
},
};
WidgetClass xlwMenuWidgetClass = (WidgetClass) &xlwMenuClassRec;
int submenu_destroyed;
/* For debug, if installation-directory is non-nil this is not an installed
Emacs. In that case we do not grab the keyboard to make it easier to
debug. */
#define GRAB_KEYBOARD (EQ (Vinstallation_directory, Qnil))
static int next_release_must_exit;
/* Utilities */
/* Ungrab pointer and keyboard */
static void
ungrab_all (Widget w, Time ungrabtime)
{
XtUngrabPointer (w, ungrabtime);
if (GRAB_KEYBOARD) XtUngrabKeyboard (w, ungrabtime);
}
/* Like abort, but remove grabs from widget W before. */
static _Noreturn void
abort_gracefully (Widget w)
{
if (XtIsShell (XtParent (w)))
XtRemoveGrab (w);
ungrab_all (w, CurrentTime);
abort ();
}
static void
push_new_stack (XlwMenuWidget mw, widget_value *val)
{
if (!mw->menu.new_stack)
{
mw->menu.new_stack_length = 10;
mw->menu.new_stack =
(widget_value**)XtCalloc (mw->menu.new_stack_length,
sizeof (widget_value*));
}
else if (mw->menu.new_depth == mw->menu.new_stack_length)
{
mw->menu.new_stack_length *= 2;
mw->menu.new_stack =
(widget_value**)XtRealloc ((char*)mw->menu.new_stack,
mw->menu.new_stack_length * sizeof (widget_value*));
}
mw->menu.new_stack [mw->menu.new_depth++] = val;
}
static void
pop_new_stack_if_no_contents (XlwMenuWidget mw)
{
if (mw->menu.new_depth > 1)
{
if (!mw->menu.new_stack [mw->menu.new_depth - 1]->contents)
mw->menu.new_depth -= 1;
}
}
static void
make_old_stack_space (XlwMenuWidget mw, int n)
{
if (!mw->menu.old_stack)
{
mw->menu.old_stack_length = 10;
mw->menu.old_stack =
(widget_value**)XtCalloc (mw->menu.old_stack_length,
sizeof (widget_value*));
}
else if (mw->menu.old_stack_length < n)
{
mw->menu.old_stack_length *= 2;
mw->menu.old_stack =
(widget_value**)XtRealloc ((char*)mw->menu.old_stack,
mw->menu.old_stack_length * sizeof (widget_value*));
}
}
/* Size code */
static int
string_width (XlwMenuWidget mw, char *s)
{
XCharStruct xcs;
int drop;
#ifdef HAVE_XFT
if (mw->menu.xft_font)
{
XGlyphInfo gi;
XftTextExtentsUtf8 (XtDisplay (mw), mw->menu.xft_font,
(FcChar8 *) s,
strlen (s), &gi);
return gi.width;
}
#endif
#ifdef HAVE_X_I18N
if (mw->menu.fontSet)
{
XRectangle ink, logical;
XmbTextExtents (mw->menu.fontSet, s, strlen (s), &ink, &logical);
return logical.width;
}
#endif
XTextExtents (mw->menu.font, s, strlen (s), &drop, &drop, &drop, &xcs);
return xcs.width;
}
#ifdef HAVE_XFT
#define MENU_FONT_HEIGHT(mw) \
((mw)->menu.xft_font != NULL \
? (mw)->menu.xft_font->height \
: ((mw)->menu.fontSet != NULL \
? (mw)->menu.font_extents->max_logical_extent.height \
: (mw)->menu.font->ascent + (mw)->menu.font->descent))
#define MENU_FONT_ASCENT(mw) \
((mw)->menu.xft_font != NULL \
? (mw)->menu.xft_font->ascent \
: ((mw)->menu.fontSet != NULL \
? - (mw)->menu.font_extents->max_logical_extent.y \
: (mw)->menu.font->ascent))
#else
#ifdef HAVE_X_I18N
#define MENU_FONT_HEIGHT(mw) \
((mw)->menu.fontSet != NULL \
? (mw)->menu.font_extents->max_logical_extent.height \
: (mw)->menu.font->ascent + (mw)->menu.font->descent)
#define MENU_FONT_ASCENT(mw) \
((mw)->menu.fontSet != NULL \
? - (mw)->menu.font_extents->max_logical_extent.y \
: (mw)->menu.font->ascent)
#else
#define MENU_FONT_HEIGHT(mw) \
((mw)->menu.font->ascent + (mw)->menu.font->descent)
#define MENU_FONT_ASCENT(mw) ((mw)->menu.font->ascent)
#endif
#endif
static int
arrow_width (XlwMenuWidget mw)
{
return (MENU_FONT_ASCENT (mw) * 3/4) | 1;
}
/* Return the width of toggle buttons of widget MW. */
static int
toggle_button_width (XlwMenuWidget mw)
{
return (MENU_FONT_HEIGHT (mw) * 2 / 3) | 1;
}
/* Return the width of radio buttons of widget MW. */
static int
radio_button_width (XlwMenuWidget mw)
{
return toggle_button_width (mw) * 1.41;
}
static XtResource
nameResource[] =
{
{"labelString", "LabelString", XtRString, sizeof(String),
0, XtRImmediate, 0},
};
static char*
resource_widget_value (XlwMenuWidget mw, widget_value *val)
{
if (!val->toolkit_data)
{
char* resourced_name = NULL;
char* complete_name;
XtGetSubresources ((Widget) mw,
(XtPointer) &resourced_name,
val->name, val->name,
nameResource, 1, NULL, 0);
if (!resourced_name)
resourced_name = val->name;
if (!val->value)
{
complete_name = (char *) XtMalloc (strlen (resourced_name) + 1);
strcpy (complete_name, resourced_name);
}
else
{
int complete_length =
strlen (resourced_name) + strlen (val->value) + 2;
complete_name = XtMalloc (complete_length);
*complete_name = 0;
strcat (complete_name, resourced_name);
strcat (complete_name, " ");
strcat (complete_name, val->value);
}
val->toolkit_data = complete_name;
val->free_toolkit_data = True;
}
return (char*)val->toolkit_data;
}
/* Returns the sizes of an item */
static void
size_menu_item (XlwMenuWidget mw,
widget_value* val,
int horizontal_p,
int* label_width,
int* rest_width,
int* button_width,
int* height)
{
enum menu_separator separator;
if (lw_separator_p (val->name, &separator, 0))
{
*height = separator_height (separator);
*label_width = 1;
*rest_width = 0;
*button_width = 0;
}
else
{
*height = MENU_FONT_HEIGHT (mw)
+ 2 * mw->menu.vertical_spacing + 2 * mw->menu.shadow_thickness;
*label_width =
string_width (mw, resource_widget_value (mw, val))
+ mw->menu.horizontal_spacing + mw->menu.shadow_thickness;
*rest_width = mw->menu.horizontal_spacing + mw->menu.shadow_thickness;
if (!horizontal_p)
{
if (val->contents)
/* Add width of the arrow displayed for submenus. */
*rest_width += arrow_width (mw) + mw->menu.arrow_spacing;
else if (val->key)
/* Add width of key equivalent string. */
*rest_width += (string_width (mw, val->key)
+ mw->menu.arrow_spacing);
if (val->button_type == BUTTON_TYPE_TOGGLE)
*button_width = (toggle_button_width (mw)
+ mw->menu.horizontal_spacing);
else if (val->button_type == BUTTON_TYPE_RADIO)
*button_width = (radio_button_width (mw)
+ mw->menu.horizontal_spacing);
}
}
}
static void
size_menu (XlwMenuWidget mw, int level)
{
int label_width = 0;
int rest_width = 0;
int button_width = 0;
int max_rest_width = 0;
int max_button_width = 0;
int height = 0;
int horizontal_p = mw->menu.horizontal && (level == 0);
widget_value* val;
window_state* ws;
if (level >= mw->menu.old_depth)
abort_gracefully ((Widget) mw);
ws = &mw->menu.windows [level];
ws->width = 0;
ws->height = 0;
ws->label_width = 0;
ws->button_width = 0;
for (val = mw->menu.old_stack [level]->contents; val; val = val->next)
{
size_menu_item (mw, val, horizontal_p, &label_width, &rest_width,
&button_width, &height);
if (horizontal_p)
{
ws->width += label_width + rest_width;
if (height > ws->height)
ws->height = height;
}
else
{
if (label_width > ws->label_width)
ws->label_width = label_width;
if (rest_width > max_rest_width)
max_rest_width = rest_width;
if (button_width > max_button_width)
max_button_width = button_width;
ws->height += height;
}
}
if (horizontal_p)
ws->label_width = ws->button_width = 0;
else
{
ws->width = ws->label_width + max_rest_width + max_button_width;
ws->button_width = max_button_width;
}
ws->width += 2 * mw->menu.shadow_thickness;
ws->height += 2 * mw->menu.shadow_thickness;
ws->max_rest_width = max_rest_width;
if (horizontal_p)
{
ws->width += 2 * mw->menu.margin;
ws->height += 2 * mw->menu.margin;
}
}
/* Display code */
static void
draw_arrow (XlwMenuWidget mw,
Window window,
GC gc,
int x,
int y,
int width,
int down_p)
{
Display *dpy = XtDisplay (mw);
GC top_gc = mw->menu.shadow_top_gc;
GC bottom_gc = mw->menu.shadow_bottom_gc;
int thickness = mw->menu.shadow_thickness;
int height = width;
XPoint pt[10];
/* alpha = atan (0.5)
factor = (1 + sin (alpha)) / cos (alpha) */
double factor = 1.62;
int thickness2 = thickness * factor;
y += (MENU_FONT_HEIGHT (mw) - height) / 2;
if (down_p)
{
GC temp;
temp = top_gc;
top_gc = bottom_gc;
bottom_gc = temp;
}
pt[0].x = x;
pt[0].y = y + height;
pt[1].x = x + thickness;
pt[1].y = y + height - thickness2;
pt[2].x = x + thickness2;
pt[2].y = y + thickness2;
pt[3].x = x;
pt[3].y = y;
XFillPolygon (dpy, window, top_gc, pt, 4, Convex, CoordModeOrigin);
pt[0].x = x;
pt[0].y = y;
pt[1].x = x + thickness;
pt[1].y = y + thickness2;
pt[2].x = x + width - thickness2;
pt[2].y = y + height / 2;
pt[3].x = x + width;
pt[3].y = y + height / 2;
XFillPolygon (dpy, window, top_gc, pt, 4, Convex, CoordModeOrigin);
pt[0].x = x;
pt[0].y = y + height;
pt[1].x = x + thickness;
pt[1].y = y + height - thickness2;
pt[2].x = x + width - thickness2;
pt[2].y = y + height / 2;
pt[3].x = x + width;
pt[3].y = y + height / 2;
XFillPolygon (dpy, window, bottom_gc, pt, 4, Convex, CoordModeOrigin);
}
static void
draw_shadow_rectangle (XlwMenuWidget mw,
Window window,
int x,
int y,
int width,
int height,
int erase_p,
int down_p)
{
Display *dpy = XtDisplay (mw);
GC top_gc = !erase_p ? mw->menu.shadow_top_gc : mw->menu.background_gc;
GC bottom_gc = !erase_p ? mw->menu.shadow_bottom_gc : mw->menu.background_gc;
int thickness = mw->menu.shadow_thickness;
XPoint points [4];
if (!erase_p && down_p)
{
GC temp;
temp = top_gc;
top_gc = bottom_gc;
bottom_gc = temp;
}
points [0].x = x;
points [0].y = y;
points [1].x = x + width;
points [1].y = y;
points [2].x = x + width - thickness;
points [2].y = y + thickness;
points [3].x = x;
points [3].y = y + thickness;
XFillPolygon (dpy, window, top_gc, points, 4, Convex, CoordModeOrigin);
points [0].x = x;
points [0].y = y + thickness;
points [1].x = x;
points [1].y = y + height;
points [2].x = x + thickness;
points [2].y = y + height - thickness;
points [3].x = x + thickness;
points [3].y = y + thickness;
XFillPolygon (dpy, window, top_gc, points, 4, Convex, CoordModeOrigin);
points [0].x = x + width;
points [0].y = y;
points [1].x = x + width - thickness;
points [1].y = y + thickness;
points [2].x = x + width - thickness;
points [2].y = y + height - thickness;
points [3].x = x + width;
points [3].y = y + height - thickness;
XFillPolygon (dpy, window, bottom_gc, points, 4, Convex, CoordModeOrigin);
points [0].x = x;
points [0].y = y + height;
points [1].x = x + width;
points [1].y = y + height;
points [2].x = x + width;
points [2].y = y + height - thickness;
points [3].x = x + thickness;
points [3].y = y + height - thickness;
XFillPolygon (dpy, window, bottom_gc, points, 4, Convex, CoordModeOrigin);
}
static void
draw_shadow_rhombus (XlwMenuWidget mw,
Window window,
int x,
int y,
int width,
int height,
int erase_p,
int down_p)
{
Display *dpy = XtDisplay (mw);
GC top_gc = !erase_p ? mw->menu.shadow_top_gc : mw->menu.background_gc;
GC bottom_gc = !erase_p ? mw->menu.shadow_bottom_gc : mw->menu.background_gc;
int thickness = mw->menu.shadow_thickness;
XPoint points [4];
if (!erase_p && down_p)
{
GC temp;
temp = top_gc;
top_gc = bottom_gc;
bottom_gc = temp;
}
points [0].x = x;
points [0].y = y + height / 2;
points [1].x = x + thickness;
points [1].y = y + height / 2;
points [2].x = x + width / 2;
points [2].y = y + thickness;
points [3].x = x + width / 2;
points [3].y = y;
XFillPolygon (dpy, window, top_gc, points, 4, Convex, CoordModeOrigin);
points [0].x = x + width / 2;
points [0].y = y;
points [1].x = x + width / 2;
points [1].y = y + thickness;
points [2].x = x + width - thickness;
points [2].y = y + height / 2;
points [3].x = x + width;
points [3].y = y + height / 2;
XFillPolygon (dpy, window, top_gc, points, 4, Convex, CoordModeOrigin);
points [0].x = x;
points [0].y = y + height / 2;
points [1].x = x + thickness;
points [1].y = y + height / 2;
points [2].x = x + width / 2;
points [2].y = y + height - thickness;
points [3].x = x + width / 2;
points [3].y = y + height;
XFillPolygon (dpy, window, bottom_gc, points, 4, Convex, CoordModeOrigin);
points [0].x = x + width / 2;
points [0].y = y + height;
points [1].x = x + width / 2;
points [1].y = y + height - thickness;
points [2].x = x + width - thickness;
points [2].y = y + height / 2;
points [3].x = x + width;
points [3].y = y + height / 2;
XFillPolygon (dpy, window, bottom_gc, points, 4, Convex, CoordModeOrigin);
}
/* Draw a toggle button on widget MW, X window WINDOW. X/Y is the
top-left corner of the menu item. SELECTED_P non-zero means the
toggle button is selected. */
static void
draw_toggle (XlwMenuWidget mw, Window window, int x, int y, int selected_p)
{
int width, height;
width = toggle_button_width (mw);
height = width;
x += mw->menu.horizontal_spacing;
y += (MENU_FONT_ASCENT (mw) - height) / 2;
draw_shadow_rectangle (mw, window, x, y, width, height, False, selected_p);
}
/* Draw a radio button on widget MW, X window WINDOW. X/Y is the
top-left corner of the menu item. SELECTED_P non-zero means the
toggle button is selected. */
static void
draw_radio (XlwMenuWidget mw, Window window, int x, int y, int selected_p)
{
int width, height;
width = radio_button_width (mw);
height = width;
x += mw->menu.horizontal_spacing;
y += (MENU_FONT_ASCENT (mw) - height) / 2;
draw_shadow_rhombus (mw, window, x, y, width, height, False, selected_p);
}
/* Draw a menu separator on widget MW, X window WINDOW. X/Y is the
top-left corner of the menu item. WIDTH is the width of the
separator to draw. TYPE is the separator type. */
static void
draw_separator (XlwMenuWidget mw,
Window window,
int x,
int y,
int width,
enum menu_separator type)
{
Display *dpy = XtDisplay (mw);
XGCValues xgcv;
switch (type)
{
case SEPARATOR_NO_LINE:
break;
case SEPARATOR_SINGLE_LINE:
XDrawLine (dpy, window, mw->menu.foreground_gc,
x, y, x + width, y);
break;
case SEPARATOR_DOUBLE_LINE:
draw_separator (mw, window, x, y, width, SEPARATOR_SINGLE_LINE);
draw_separator (mw, window, x, y + 2, width, SEPARATOR_SINGLE_LINE);
break;
case SEPARATOR_SINGLE_DASHED_LINE:
xgcv.line_style = LineOnOffDash;
XChangeGC (dpy, mw->menu.foreground_gc, GCLineStyle, &xgcv);
XDrawLine (dpy, window, mw->menu.foreground_gc,
x, y, x + width, y);
xgcv.line_style = LineSolid;
XChangeGC (dpy, mw->menu.foreground_gc, GCLineStyle, &xgcv);
break;
case SEPARATOR_DOUBLE_DASHED_LINE:
draw_separator (mw, window, x, y, width,
SEPARATOR_SINGLE_DASHED_LINE);
draw_separator (mw, window, x, y + 2, width,
SEPARATOR_SINGLE_DASHED_LINE);
break;
case SEPARATOR_SHADOW_ETCHED_IN:
XDrawLine (dpy, window, mw->menu.shadow_bottom_gc,
x, y, x + width, y);
XDrawLine (dpy, window, mw->menu.shadow_top_gc,
x, y + 1, x + width, y + 1);
break;
case SEPARATOR_SHADOW_ETCHED_OUT:
XDrawLine (dpy, window, mw->menu.shadow_top_gc,
x, y, x + width, y);
XDrawLine (dpy, window, mw->menu.shadow_bottom_gc,
x, y + 1, x + width, y + 1);
break;
case SEPARATOR_SHADOW_ETCHED_IN_DASH:
xgcv.line_style = LineOnOffDash;
XChangeGC (dpy, mw->menu.shadow_bottom_gc, GCLineStyle, &xgcv);
XChangeGC (dpy, mw->menu.shadow_top_gc, GCLineStyle, &xgcv);
draw_separator (mw, window, x, y, width, SEPARATOR_SHADOW_ETCHED_IN);
xgcv.line_style = LineSolid;
XChangeGC (dpy, mw->menu.shadow_bottom_gc, GCLineStyle, &xgcv);
XChangeGC (dpy, mw->menu.shadow_top_gc, GCLineStyle, &xgcv);
break;
case SEPARATOR_SHADOW_ETCHED_OUT_DASH:
xgcv.line_style = LineOnOffDash;
XChangeGC (dpy, mw->menu.shadow_bottom_gc, GCLineStyle, &xgcv);
XChangeGC (dpy, mw->menu.shadow_top_gc, GCLineStyle, &xgcv);
draw_separator (mw, window, x, y, width, SEPARATOR_SHADOW_ETCHED_OUT);
xgcv.line_style = LineSolid;
XChangeGC (dpy, mw->menu.shadow_bottom_gc, GCLineStyle, &xgcv);
XChangeGC (dpy, mw->menu.shadow_top_gc, GCLineStyle, &xgcv);
break;
case SEPARATOR_SHADOW_DOUBLE_ETCHED_IN:
draw_separator (mw, window, x, y, width, SEPARATOR_SHADOW_ETCHED_IN);
draw_separator (mw, window, x, y + 3, width, SEPARATOR_SHADOW_ETCHED_IN);
break;
case SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT:
draw_separator (mw, window, x, y, width,
SEPARATOR_SHADOW_ETCHED_OUT);
draw_separator (mw, window, x, y + 3, width,
SEPARATOR_SHADOW_ETCHED_OUT);
break;
case SEPARATOR_SHADOW_DOUBLE_ETCHED_IN_DASH:
xgcv.line_style = LineOnOffDash;
XChangeGC (dpy, mw->menu.shadow_bottom_gc, GCLineStyle, &xgcv);
XChangeGC (dpy, mw->menu.shadow_top_gc, GCLineStyle, &xgcv);
draw_separator (mw, window, x, y, width,
SEPARATOR_SHADOW_DOUBLE_ETCHED_IN);
xgcv.line_style = LineSolid;
XChangeGC (dpy, mw->menu.shadow_bottom_gc, GCLineStyle, &xgcv);
XChangeGC (dpy, mw->menu.shadow_top_gc, GCLineStyle, &xgcv);
break;
case SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT_DASH:
xgcv.line_style = LineOnOffDash;
XChangeGC (dpy, mw->menu.shadow_bottom_gc, GCLineStyle, &xgcv);
XChangeGC (dpy, mw->menu.shadow_top_gc, GCLineStyle, &xgcv);
draw_separator (mw, window, x, y, width,
SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT);
xgcv.line_style = LineSolid;
XChangeGC (dpy, mw->menu.shadow_bottom_gc, GCLineStyle, &xgcv);
XChangeGC (dpy, mw->menu.shadow_top_gc, GCLineStyle, &xgcv);
break;
default:
abort ();
}
}
/* Return the pixel height of menu separator SEPARATOR. */
static int
separator_height (enum menu_separator separator)
{
switch (separator)
{
case SEPARATOR_NO_LINE:
return 2;
case SEPARATOR_SINGLE_LINE:
case SEPARATOR_SINGLE_DASHED_LINE:
return 1;
case SEPARATOR_DOUBLE_LINE:
case SEPARATOR_DOUBLE_DASHED_LINE:
return 3;
case SEPARATOR_SHADOW_ETCHED_IN:
case SEPARATOR_SHADOW_ETCHED_OUT:
case SEPARATOR_SHADOW_ETCHED_IN_DASH:
case SEPARATOR_SHADOW_ETCHED_OUT_DASH:
return 2;
case SEPARATOR_SHADOW_DOUBLE_ETCHED_IN:
case SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT:
case SEPARATOR_SHADOW_DOUBLE_ETCHED_IN_DASH:
case SEPARATOR_SHADOW_DOUBLE_ETCHED_OUT_DASH:
return 5;
default:
abort ();
}
}
/* Display the menu item and increment where.x and where.y to show how large
the menu item was. */
static void
display_menu_item (XlwMenuWidget mw,
widget_value* val,
window_state* ws,
XPoint* where,
Boolean highlighted_p,
Boolean horizontal_p,
Boolean just_compute_p)
{
GC deco_gc;
GC text_gc;
int font_height = MENU_FONT_HEIGHT (mw);
int font_ascent = MENU_FONT_ASCENT (mw);
int shadow = mw->menu.shadow_thickness;
int margin = mw->menu.margin;
int h_spacing = mw->menu.horizontal_spacing;
int v_spacing = mw->menu.vertical_spacing;
int label_width;
int rest_width;
int button_width;
int height;
int width;
enum menu_separator separator;
int separator_p = lw_separator_p (val->name, &separator, 0);
#ifdef HAVE_XFT
XftColor *xftfg;
#endif
/* compute the sizes of the item */
size_menu_item (mw, val, horizontal_p, &label_width, &rest_width,
&button_width, &height);
if (horizontal_p)
width = label_width + rest_width;
else
{
label_width = ws->label_width;
width = ws->width - 2 * shadow;
}
/* Only highlight an enabled item that has a callback. */
if (highlighted_p)
if (!val->enabled || !(val->call_data || val->contents))
highlighted_p = 0;
/* do the drawing. */
if (!just_compute_p)
{
/* Add the shadow border of the containing menu */
int x = where->x + shadow;
int y = where->y + shadow;
if (horizontal_p)
{
x += margin;
y += margin;
}
/* pick the foreground and background GC. */
if (val->enabled)
text_gc = mw->menu.foreground_gc;
else
text_gc = mw->menu.disabled_gc;
deco_gc = mw->menu.foreground_gc;
#ifdef HAVE_XFT
xftfg = val->enabled ? &mw->menu.xft_fg : &mw->menu.xft_disabled_fg;
#endif
if (separator_p)
{
draw_separator (mw, ws->pixmap, x, y, width, separator);
}
else
{
int x_offset = x + h_spacing + shadow;
char* display_string = resource_widget_value (mw, val);
draw_shadow_rectangle (mw, ws->pixmap, x, y, width, height, True,
False);
/* Deal with centering a menu title. */
if (!horizontal_p && !val->contents && !val->call_data)
{
int l = string_width (mw, display_string);
if (width > l)
x_offset = (width - l) >> 1;
}
else if (!horizontal_p && ws->button_width)
x_offset += ws->button_width;
#ifdef HAVE_XFT
if (ws->xft_draw)
{
int draw_y = y + v_spacing + shadow;
XftDrawStringUtf8 (ws->xft_draw, xftfg,
mw->menu.xft_font,
x_offset, draw_y + font_ascent,
(unsigned char *) display_string,
strlen (display_string));
}
else
#endif
#ifdef HAVE_X_I18N
if (mw->menu.fontSet)
XmbDrawString (XtDisplay (mw), ws->pixmap, mw->menu.fontSet,
text_gc, x_offset,
y + v_spacing + shadow + font_ascent,
display_string, strlen (display_string));
else
#endif
XDrawString (XtDisplay (mw), ws->pixmap,
text_gc, x_offset,
y + v_spacing + shadow + font_ascent,
display_string, strlen (display_string));
if (!horizontal_p)
{
if (val->button_type == BUTTON_TYPE_TOGGLE)
draw_toggle (mw, ws->pixmap, x, y + v_spacing + shadow,
val->selected);
else if (val->button_type == BUTTON_TYPE_RADIO)
draw_radio (mw, ws->pixmap, x, y + v_spacing + shadow,
val->selected);
if (val->contents)
{
int a_w = arrow_width (mw);
draw_arrow (mw, ws->pixmap, deco_gc,
x + width - a_w
- mw->menu.horizontal_spacing
- mw->menu.shadow_thickness,
y + v_spacing + shadow, a_w,
highlighted_p);
}
else if (val->key)
{
#ifdef HAVE_XFT
if (ws->xft_draw)
{
int draw_x = ws->width - ws->max_rest_width
+ mw->menu.arrow_spacing;
int draw_y = y + v_spacing + shadow + font_ascent;
XftDrawStringUtf8 (ws->xft_draw, xftfg,
mw->menu.xft_font,
draw_x, draw_y,
(unsigned char *) val->key,
strlen (val->key));
}
else
#endif
#ifdef HAVE_X_I18N
if (mw->menu.fontSet)
XmbDrawString (XtDisplay (mw), ws->pixmap,
mw->menu.fontSet,
text_gc,
x + label_width + mw->menu.arrow_spacing,
y + v_spacing + shadow + font_ascent,
val->key, strlen (val->key));
else
#endif
XDrawString (XtDisplay (mw), ws->pixmap,
text_gc,
x + label_width + mw->menu.arrow_spacing,
y + v_spacing + shadow + font_ascent,
val->key, strlen (val->key));
}
}
else
{
XDrawRectangle (XtDisplay (mw), ws->pixmap,
mw->menu.background_gc,
x + shadow, y + shadow,
label_width + h_spacing - 1,
font_height + 2 * v_spacing - 1);
draw_shadow_rectangle (mw, ws->pixmap, x, y, width, height,
True, False);
}
if (highlighted_p)
draw_shadow_rectangle (mw, ws->pixmap, x, y, width, height, False,
False);
}
}
where->x += width;
where->y += height;
}
static void
display_menu (XlwMenuWidget mw,
int level,
Boolean just_compute_p,
XPoint *highlighted_pos,
XPoint *hit,
widget_value **hit_return)
{
widget_value* val;
widget_value* following_item;
window_state* ws;
XPoint where;
int horizontal_p = mw->menu.horizontal && (level == 0);
int highlighted_p;
int no_return = 0;
enum menu_separator separator;
if (level >= mw->menu.old_depth)
abort_gracefully ((Widget) mw);
if (level < mw->menu.old_depth - 1)
following_item = mw->menu.old_stack [level + 1];
else
following_item = NULL;
if (hit)
*hit_return = NULL;
where.x = 0;
where.y = 0;
ws = &mw->menu.windows [level];
if (!just_compute_p)
XFillRectangle (XtDisplay (mw), ws->pixmap, mw->menu.background_gc,
0, 0, ws->width, ws->height);
for (val = mw->menu.old_stack [level]->contents; val; val = val->next)
{
highlighted_p = val == following_item;
if (highlighted_p && highlighted_pos)
{
if (horizontal_p)
highlighted_pos->x = where.x;
else
highlighted_pos->y = where.y;
}
display_menu_item (mw, val, ws, &where, highlighted_p, horizontal_p,
just_compute_p);
if (highlighted_p && highlighted_pos)
{
if (horizontal_p)
highlighted_pos->y = where.y;
else
highlighted_pos->x = where.x;
}
if (hit
&& !*hit_return
&& (horizontal_p ? hit->x < where.x : hit->y < where.y)
&& !lw_separator_p (val->name, &separator, 0)
&& !no_return)
{
if (val->enabled)
*hit_return = val;
else
no_return = 1;
if (mw->menu.inside_entry != val)
{
if (mw->menu.inside_entry)
XtCallCallbackList ((Widget)mw, mw->menu.leave,
(XtPointer) mw->menu.inside_entry);
mw->menu.inside_entry = val;
XtCallCallbackList ((Widget)mw, mw->menu.enter,
(XtPointer) mw->menu.inside_entry);
}
}
if (horizontal_p)
where.y = 0;
else
where.x = 0;
}
if (!just_compute_p)
{
draw_shadow_rectangle (mw, ws->pixmap, 0, 0, ws->width, ws->height,
False, False);
XCopyArea (XtDisplay (mw), ws->pixmap, ws->window,
mw->menu.foreground_gc, 0, 0, ws->width, ws->height, 0, 0);
}
}
/* Motion code */
static void
set_new_state (XlwMenuWidget mw, widget_value *val, int level)
{
int i;
mw->menu.new_depth = 0;
for (i = 0; i < level; i++)
push_new_stack (mw, mw->menu.old_stack [i]);
push_new_stack (mw, val);
}
static void
expose_cb (Widget widget,
XtPointer closure,
XEvent* event,
Boolean* continue_to_dispatch)
{
XlwMenuWidget mw = (XlwMenuWidget) closure;
int i;
*continue_to_dispatch = False;
for (i = 0; i < mw->menu.windows_length; ++i)
if (mw->menu.windows [i].w == widget) break;
if (i < mw->menu.windows_length && i < mw->menu.old_depth)
display_menu (mw, i, False, NULL, NULL, NULL);
}
static void
set_window_type (Widget w, XlwMenuWidget mw)
{
int popup_menu_p = mw->menu.top_depth == 1;
Atom type = XInternAtom (XtDisplay (w),
popup_menu_p
? "_NET_WM_WINDOW_TYPE_POPUP_MENU"
: "_NET_WM_WINDOW_TYPE_DROPDOWN_MENU",
False);
XChangeProperty (XtDisplay (w), XtWindow (w),
XInternAtom (XtDisplay (w), "_NET_WM_WINDOW_TYPE", False),
XA_ATOM, 32, PropModeReplace,
(unsigned char *)&type, 1);
}
static void
make_windows_if_needed (XlwMenuWidget mw, int n)
{
int i;
int start_at;
window_state* windows;
if (mw->menu.windows_length >= n)
return;
if (!mw->menu.windows)
{
mw->menu.windows =
(window_state*)XtMalloc (n * sizeof (window_state));
start_at = 0;
}
else
{
mw->menu.windows =
(window_state*)XtRealloc ((char*)mw->menu.windows,
n * sizeof (window_state));
start_at = mw->menu.windows_length;
}
mw->menu.windows_length = n;
windows = mw->menu.windows;
for (i = start_at; i < n; i++)
{
Arg av[10];
int ac = 0;
windows [i].x = 0;
windows [i].y = 0;
windows [i].width = 1;
windows [i].height = 1;
windows [i].max_rest_width = 0;
XtSetArg (av[ac], XtNwidth, 1); ++ac;
XtSetArg (av[ac], XtNheight, 1); ++ac;
XtSetArg (av[ac], XtNsaveUnder, True); ++ac;
XtSetArg (av[ac], XtNbackground, mw->core.background_pixel); ++ac;
XtSetArg (av[ac], XtNborderColor, mw->core.border_pixel); ++ac;
XtSetArg (av[ac], XtNborderWidth, mw->core.border_width); ++ac;
XtSetArg (av[ac], XtNcursor, mw->menu.cursor_shape); ++ac;
windows [i].w =
XtCreatePopupShell ("sub", overrideShellWidgetClass,
(Widget) mw, av, ac);
XtRealizeWidget (windows [i].w);
XtAddEventHandler (windows [i].w, ExposureMask, False, expose_cb, mw);
windows [i].window = XtWindow (windows [i].w);
windows [i].pixmap = None;
#ifdef HAVE_XFT
windows [i].xft_draw = 0;
#endif
set_window_type (windows [i].w, mw);
}
XFlush (XtDisplay (mw));
}
/* Value is non-zero if WINDOW is part of menu bar widget W. */
int
xlwmenu_window_p (Widget w, Window window)
{
XlwMenuWidget mw = (XlwMenuWidget) w;
int i;
for (i = 0; i < mw->menu.windows_length; ++i)
if (window == mw->menu.windows[i].window)
break;
return i < mw->menu.windows_length;
}
/* Make the window fit in the screen */
static void
fit_to_screen (XlwMenuWidget mw,
window_state *ws,
window_state *previous_ws,
Boolean horizontal_p)
{
unsigned int screen_width = WidthOfScreen (XtScreen (mw));
unsigned int screen_height = HeightOfScreen (XtScreen (mw));
/* 1 if we are unable to avoid an overlap between
this menu and the parent menu in the X dimension. */
int horizontal_overlap = 0;
if (ws->x < 0)
ws->x = 0;
else if (ws->x + ws->width > screen_width)
{
if (!horizontal_p)
/* The addition of shadow-thickness for a sub-menu's position is
to reflect a similar adjustment when the menu is displayed to
the right of the invoking menu-item; it makes the sub-menu
look more `attached' to the menu-item. */
ws->x = previous_ws->x - ws->width + mw->menu.shadow_thickness;
else
ws->x = screen_width - ws->width;
if (ws->x < 0)
{
ws->x = 0;
horizontal_overlap = 1;
}
}
/* If we overlap in X, try to avoid overlap in Y. */
if (horizontal_overlap
&& ws->y < previous_ws->y + previous_ws->height
&& previous_ws->y < ws->y + ws->height)
{
/* Put this menu right below or right above PREVIOUS_WS
if there's room. */
if (previous_ws->y + previous_ws->height + ws->height < screen_height)
ws->y = previous_ws->y + previous_ws->height;
else if (previous_ws->y - ws->height > 0)
ws->y = previous_ws->y - ws->height;
}
if (ws->y < 0)
ws->y = 0;
else if (ws->y + ws->height > screen_height)
{
if (horizontal_p)
ws->y = previous_ws->y - ws->height;
else
ws->y = screen_height - ws->height;
if (ws->y < 0)
ws->y = 0;
}
}
static void
create_pixmap_for_menu (window_state* ws, XlwMenuWidget mw)
{
if (ws->pixmap != None)
{
XFreePixmap (XtDisplay (ws->w), ws->pixmap);
ws->pixmap = None;
}
ws->pixmap = XCreatePixmap (XtDisplay (ws->w), ws->window,
ws->width, ws->height,
DefaultDepthOfScreen (XtScreen (ws->w)));
#ifdef HAVE_XFT
if (ws->xft_draw)
XftDrawDestroy (ws->xft_draw);
if (mw->menu.xft_font)
{
int screen = XScreenNumberOfScreen (mw->core.screen);
ws->xft_draw = XftDrawCreate (XtDisplay (ws->w),
ws->pixmap,
DefaultVisual (XtDisplay (ws->w), screen),
mw->core.colormap);
}
else
ws->xft_draw = 0;
#endif
}
/* Updates old_stack from new_stack and redisplays. */
static void
remap_menubar (XlwMenuWidget mw)
{
int i;
int last_same;
XPoint selection_position;
int old_depth = mw->menu.old_depth;
int new_depth = mw->menu.new_depth;
widget_value** old_stack;
widget_value** new_stack;
window_state* windows;
widget_value* old_selection;
widget_value* new_selection;
/* Check that enough windows and old_stack are ready. */
make_windows_if_needed (mw, new_depth);
make_old_stack_space (mw, new_depth);
windows = mw->menu.windows;
old_stack = mw->menu.old_stack;
new_stack = mw->menu.new_stack;
/* compute the last identical different entry */
for (i = 1; i < old_depth && i < new_depth; i++)
if (old_stack [i] != new_stack [i])
break;
last_same = i - 1;
/* Memorize the previously selected item to be able to refresh it */
old_selection = last_same + 1 < old_depth ? old_stack [last_same + 1] : NULL;
if (old_selection && !old_selection->enabled)
old_selection = NULL;
new_selection = last_same + 1 < new_depth ? new_stack [last_same + 1] : NULL;
if (new_selection && !new_selection->enabled)
new_selection = NULL;
/* Call callback when the highlighted item changes. */
if (old_selection || new_selection)
XtCallCallbackList ((Widget)mw, mw->menu.highlight,
(XtPointer) new_selection);
/* updates old_state from new_state. It has to be done now because
display_menu (called below) uses the old_stack to know what to display. */
for (i = last_same + 1; i < new_depth; i++)
{
XtPopdown (mw->menu.windows [i].w);
old_stack [i] = new_stack [i];
}
mw->menu.old_depth = new_depth;
/* refresh the last selection */
selection_position.x = 0;
selection_position.y = 0;
display_menu (mw, last_same, new_selection == old_selection,
&selection_position, NULL, NULL);
/* Now place the new menus. */
for (i = last_same + 1; i < new_depth && new_stack[i]->contents; i++)
{
window_state *previous_ws = &windows[i - 1];
window_state *ws = &windows[i];
ws->x = (previous_ws->x + selection_position.x
+ mw->menu.shadow_thickness);
if (mw->menu.horizontal && i == 1)
ws->x += mw->menu.margin;
#if 0
if (!mw->menu.horizontal || i > 1)
ws->x += mw->menu.shadow_thickness;
#endif
ws->y = (previous_ws->y + selection_position.y
+ mw->menu.shadow_thickness);
if (mw->menu.horizontal && i == 1)
ws->y += mw->menu.margin;
size_menu (mw, i);
fit_to_screen (mw, ws, previous_ws, mw->menu.horizontal && i == 1);
create_pixmap_for_menu (ws, mw);
XtMoveWidget (ws->w, ws->x, ws->y);
XtPopup (ws->w, XtGrabNone);
XtResizeWidget (ws->w, ws->width, ws->height,
mw->core.border_width);
XtResizeWindow (ws->w);
display_menu (mw, i, False, &selection_position, NULL, NULL);
}
/* unmap the menus that popped down */
for (i = new_depth - 1; i < old_depth; i++)
if (i >= new_depth || (i > 0 && !new_stack[i]->contents))
XtPopdown (windows[i].w);
}
static Boolean
motion_event_is_in_menu (XlwMenuWidget mw,
XMotionEvent *ev,
int level,
XPoint *relative_pos)
{
window_state* ws = &mw->menu.windows [level];
int shadow = level == 0 ? 0 : mw->menu.shadow_thickness;
int x = ws->x + shadow;
int y = ws->y + shadow;
relative_pos->x = ev->x_root - x;
relative_pos->y = ev->y_root - y;
return (x - shadow < ev->x_root && ev->x_root < x + ws->width
&& y - shadow < ev->y_root && ev->y_root < y + ws->height);
}
static Boolean
map_event_to_widget_value (XlwMenuWidget mw,
XMotionEvent *ev,
widget_value **val,
int *level)
{
int i;
XPoint relative_pos;
window_state* ws;
int inside = 0;
*val = NULL;
/* Find the window */
for (i = mw->menu.old_depth - 1; i >= 0; i--)
{
ws = &mw->menu.windows [i];
if (ws && motion_event_is_in_menu (mw, ev, i, &relative_pos))
{
inside = 1;
display_menu (mw, i, True, NULL, &relative_pos, val);
if (*val)
{
*level = i + 1;
return True;
}
}
}
if (!inside)
{
if (mw->menu.inside_entry != NULL)
XtCallCallbackList ((Widget)mw, mw->menu.leave,
(XtPointer) mw->menu.inside_entry);
mw->menu.inside_entry = NULL;
}
return False;
}
/* Procedures */
static void
make_drawing_gcs (XlwMenuWidget mw)
{
XGCValues xgcv;
float scale;
XtGCMask mask = GCForeground | GCBackground;
#ifdef HAVE_X_I18N
if (!mw->menu.fontSet && mw->menu.font)
{
xgcv.font = mw->menu.font->fid;
mask |= GCFont;
}
#else
if (mw->menu.font)
{
xgcv.font = mw->menu.font->fid;
mask |= GCFont;
}
#endif
xgcv.foreground = mw->menu.foreground;
xgcv.background = mw->core.background_pixel;
mw->menu.foreground_gc = XtGetGC ((Widget)mw, mask, &xgcv);
xgcv.foreground = mw->menu.button_foreground;
mw->menu.button_gc = XtGetGC ((Widget)mw, mask, &xgcv);
xgcv.background = mw->core.background_pixel;
#define BRIGHTNESS(color) (((color) & 0xff) + (((color) >> 8) & 0xff) + (((color) >> 16) & 0xff))
/* Allocate color for disabled menu-items. */
mw->menu.disabled_foreground = mw->menu.foreground;
if (BRIGHTNESS(mw->menu.foreground) < BRIGHTNESS(mw->core.background_pixel))
scale = 2.3;
else
scale = 0.55;
x_alloc_lighter_color_for_widget ((Widget) mw, XtDisplay ((Widget) mw),
mw->core.colormap,
&mw->menu.disabled_foreground,
scale,
0x8000);
if (mw->menu.foreground == mw->menu.disabled_foreground
|| mw->core.background_pixel == mw->menu.disabled_foreground)
{
/* Too few colors, use stipple. */
xgcv.foreground = mw->menu.foreground;
xgcv.fill_style = FillStippled;
xgcv.stipple = mw->menu.gray_pixmap;
mw->menu.disabled_gc = XtGetGC ((Widget)mw, mask
| GCFillStyle | GCStipple, &xgcv);
}
else
{
/* Many colors available, use disabled pixel. */
xgcv.foreground = mw->menu.disabled_foreground;
mw->menu.disabled_gc = XtGetGC ((Widget)mw, mask, &xgcv);
}
xgcv.foreground = mw->menu.button_foreground;
xgcv.background = mw->core.background_pixel;
xgcv.fill_style = FillStippled;
xgcv.stipple = mw->menu.gray_pixmap;
mw->menu.inactive_button_gc = XtGetGC ((Widget)mw, mask
| GCFillStyle | GCStipple, &xgcv);
xgcv.foreground = mw->core.background_pixel;
xgcv.background = mw->menu.foreground;
mw->menu.background_gc = XtGetGC ((Widget)mw, mask, &xgcv);
}
static void
release_drawing_gcs (XlwMenuWidget mw)
{
XtReleaseGC ((Widget) mw, mw->menu.foreground_gc);
XtReleaseGC ((Widget) mw, mw->menu.button_gc);
XtReleaseGC ((Widget) mw, mw->menu.disabled_gc);
XtReleaseGC ((Widget) mw, mw->menu.inactive_button_gc);
XtReleaseGC ((Widget) mw, mw->menu.background_gc);
/* let's get some segvs if we try to use these... */
mw->menu.foreground_gc = (GC) -1;
mw->menu.button_gc = (GC) -1;
mw->menu.disabled_gc = (GC) -1;
mw->menu.inactive_button_gc = (GC) -1;
mw->menu.background_gc = (GC) -1;
}
#ifndef emacs
#define MINL(x,y) ((((unsigned long) (x)) < ((unsigned long) (y))) \
? ((unsigned long) (x)) : ((unsigned long) (y)))
#endif
static void
make_shadow_gcs (XlwMenuWidget mw)
{
XGCValues xgcv;
unsigned long pm = 0;
Display *dpy = XtDisplay ((Widget) mw);
Screen *screen = XtScreen ((Widget) mw);
Colormap cmap = mw->core.colormap;
XColor topc, botc;
int top_frobbed = 0, bottom_frobbed = 0;
mw->menu.free_top_shadow_color_p = 0;
mw->menu.free_bottom_shadow_color_p = 0;
if (mw->menu.top_shadow_color == -1)
mw->menu.top_shadow_color = mw->core.background_pixel;
else
mw->menu.top_shadow_color = mw->menu.top_shadow_color;
if (mw->menu.bottom_shadow_color == -1)
mw->menu.bottom_shadow_color = mw->menu.foreground;
else
mw->menu.bottom_shadow_color = mw->menu.bottom_shadow_color;
if (mw->menu.top_shadow_color == mw->core.background_pixel ||
mw->menu.top_shadow_color == mw->menu.foreground)
{
topc.pixel = mw->core.background_pixel;
#ifdef emacs
if (x_alloc_lighter_color_for_widget ((Widget) mw, dpy, cmap,
&topc.pixel,
1.2, 0x8000))
#else
XQueryColor (dpy, cmap, &topc);
/* don't overflow/wrap! */
topc.red = MINL (65535, topc.red * 1.2);
topc.green = MINL (65535, topc.green * 1.2);
topc.blue = MINL (65535, topc.blue * 1.2);
if (XAllocColor (dpy, cmap, &topc))
#endif
{
mw->menu.top_shadow_color = topc.pixel;
mw->menu.free_top_shadow_color_p = 1;
top_frobbed = 1;
}
}
if (mw->menu.bottom_shadow_color == mw->menu.foreground ||
mw->menu.bottom_shadow_color == mw->core.background_pixel)
{
botc.pixel = mw->core.background_pixel;
#ifdef emacs
if (x_alloc_lighter_color_for_widget ((Widget) mw, dpy, cmap,
&botc.pixel,
0.6, 0x4000))
#else
XQueryColor (dpy, cmap, &botc);
botc.red *= 0.6;
botc.green *= 0.6;
botc.blue *= 0.6;
if (XAllocColor (dpy, cmap, &botc))
#endif
{
mw->menu.bottom_shadow_color = botc.pixel;
mw->menu.free_bottom_shadow_color_p = 1;
bottom_frobbed = 1;
}
}
if (top_frobbed && bottom_frobbed)
{
if (topc.pixel == botc.pixel)
{
if (botc.pixel == mw->menu.foreground)
{
if (mw->menu.free_top_shadow_color_p)
{
x_free_dpy_colors (dpy, screen, cmap,
&mw->menu.top_shadow_color, 1);
mw->menu.free_top_shadow_color_p = 0;
}
mw->menu.top_shadow_color = mw->core.background_pixel;
}
else
{
if (mw->menu.free_bottom_shadow_color_p)
{
x_free_dpy_colors (dpy, screen, cmap,
&mw->menu.bottom_shadow_color, 1);
mw->menu.free_bottom_shadow_color_p = 0;
}
mw->menu.bottom_shadow_color = mw->menu.foreground;
}
}
}
if (!mw->menu.top_shadow_pixmap &&
mw->menu.top_shadow_color == mw->core.background_pixel)
{
mw->menu.top_shadow_pixmap = mw->menu.gray_pixmap;
if (mw->menu.free_top_shadow_color_p)
{
x_free_dpy_colors (dpy, screen, cmap, &mw->menu.top_shadow_color, 1);
mw->menu.free_top_shadow_color_p = 0;
}
mw->menu.top_shadow_color = mw->menu.foreground;
}
if (!mw->menu.bottom_shadow_pixmap &&
mw->menu.bottom_shadow_color == mw->core.background_pixel)
{
mw->menu.bottom_shadow_pixmap = mw->menu.gray_pixmap;
if (mw->menu.free_bottom_shadow_color_p)
{
x_free_dpy_colors (dpy, screen, cmap,
&mw->menu.bottom_shadow_color, 1);
mw->menu.free_bottom_shadow_color_p = 0;
}
mw->menu.bottom_shadow_color = mw->menu.foreground;
}
xgcv.fill_style = FillStippled;
xgcv.foreground = mw->menu.top_shadow_color;
xgcv.stipple = mw->menu.top_shadow_pixmap;
pm = (xgcv.stipple ? GCStipple|GCFillStyle : 0);
mw->menu.shadow_top_gc = XtGetGC ((Widget)mw, GCForeground | pm, &xgcv);
xgcv.foreground = mw->menu.bottom_shadow_color;
xgcv.stipple = mw->menu.bottom_shadow_pixmap;
pm = (xgcv.stipple ? GCStipple|GCFillStyle : 0);
mw->menu.shadow_bottom_gc = XtGetGC ((Widget)mw, GCForeground | pm, &xgcv);
}
static void
release_shadow_gcs (XlwMenuWidget mw)
{
Display *dpy = XtDisplay ((Widget) mw);
Screen *screen = XtScreen ((Widget) mw);
Colormap cmap = mw->core.colormap;
Pixel px[2];
int i = 0;
if (mw->menu.free_top_shadow_color_p)
px[i++] = mw->menu.top_shadow_color;
if (mw->menu.free_bottom_shadow_color_p)
px[i++] = mw->menu.bottom_shadow_color;
if (i > 0)
x_free_dpy_colors (dpy, screen, cmap, px, i);
XtReleaseGC ((Widget) mw, mw->menu.shadow_top_gc);
XtReleaseGC ((Widget) mw, mw->menu.shadow_bottom_gc);
}
#ifdef HAVE_XFT
static XftFont *
getDefaultXftFont (XlwMenuWidget mw)
{
int screen = XScreenNumberOfScreen (mw->core.screen);
return XftFontOpenName (XtDisplay (mw), screen, DEFAULT_FONTNAME);
}
static int
openXftFont (XlwMenuWidget mw)
{
char *fname = mw->menu.fontName;
mw->menu.xft_font = 0;
mw->menu.default_face = fname && strcmp (fname, DEFAULT_FONTNAME) == 0;
if (fname && strcmp (fname, "none") != 0)
{
int screen = XScreenNumberOfScreen (mw->core.screen);
int len = strlen (fname), i = len-1;
/* Try to convert Gtk-syntax (Sans 9) to Xft syntax Sans-9. */
while (i > 0 && '0' <= fname[i] && fname[i] <= '9')
--i;
if (fname[i] == ' ')
{
fname = xstrdup (mw->menu.fontName);
fname[i] = '-';
}
mw->menu.font = XLoadQueryFont (XtDisplay (mw), fname);
if (!mw->menu.font)
{
mw->menu.xft_font = XftFontOpenName (XtDisplay (mw), screen, fname);
if (!mw->menu.xft_font)
{
fprintf (stderr, "Can't find font '%s'\n", fname);
mw->menu.xft_font = getDefaultXftFont (mw);
}
}
}
if (fname != mw->menu.fontName) xfree (fname);
return mw->menu.xft_font != 0;
}
#endif
static void
XlwMenuInitialize (Widget request, Widget w, ArgList args, Cardinal *num_args)
{
/* Get the GCs and the widget size */
XlwMenuWidget mw = (XlwMenuWidget) w;
Window window = RootWindowOfScreen (DefaultScreenOfDisplay (XtDisplay (mw)));
Display* display = XtDisplay (mw);
#if 0
widget_value *tem = (widget_value *) XtMalloc (sizeof (widget_value));
/* _XtCreate is freeing the object that was passed to us,
so make a copy that we will actually keep. */
memcpy (tem, mw->menu.contents, sizeof (widget_value));
mw->menu.contents = tem;
#endif
/* mw->menu.cursor = XCreateFontCursor (display, mw->menu.cursor_shape); */
mw->menu.cursor = mw->menu.cursor_shape;
mw->menu.gray_pixmap
= XCreatePixmapFromBitmapData (display, window, gray_bits,
gray_width, gray_height,
(unsigned long)1, (unsigned long)0, 1);
#ifdef HAVE_XFT
if (openXftFont (mw))
;
else
#endif
{
mw->menu.font = XLoadQueryFont (display, mw->menu.fontName);
if (!mw->menu.font)
{
mw->menu.font = XLoadQueryFont (display, "fixed");
if (!mw->menu.font)
{
fprintf (stderr, "Menu font fixed not found, can't continue.\n");
abort ();
}
}
}
#ifdef HAVE_X_I18N
if (mw->menu.fontSet)
mw->menu.font_extents = XExtentsOfFontSet (mw->menu.fontSet);
#endif
make_drawing_gcs (mw);
make_shadow_gcs (mw);
mw->menu.popped_up = False;
mw->menu.old_depth = 1;
mw->menu.old_stack = (widget_value**)XtMalloc (sizeof (widget_value*));
mw->menu.old_stack_length = 1;
mw->menu.old_stack [0] = mw->menu.contents;
mw->menu.new_depth = 0;
mw->menu.new_stack = 0;
mw->menu.new_stack_length = 0;
push_new_stack (mw, mw->menu.contents);
mw->menu.windows = (window_state*)XtMalloc (sizeof (window_state));
mw->menu.windows_length = 1;
mw->menu.windows [0].x = 0;
mw->menu.windows [0].y = 0;
mw->menu.windows [0].width = 0;
mw->menu.windows [0].height = 0;
mw->menu.windows [0].max_rest_width = 0;
mw->menu.windows [0].pixmap = None;
#ifdef HAVE_XFT
mw->menu.windows [0].xft_draw = 0;
#endif
size_menu (mw, 0);
mw->core.width = mw->menu.windows [0].width;
mw->core.height = mw->menu.windows [0].height;
}
static void
XlwMenuClassInitialize (void)
{
}
static void
XlwMenuRealize (Widget w, Mask *valueMask, XSetWindowAttributes *attributes)
{
XlwMenuWidget mw = (XlwMenuWidget)w;
XSetWindowAttributes xswa;
int mask;
(*xlwMenuWidgetClass->core_class.superclass->core_class.realize)
(w, valueMask, attributes);
xswa.save_under = True;
xswa.cursor = mw->menu.cursor_shape;
mask = CWSaveUnder | CWCursor;
/* I sometimes get random BadCursor errors while creating the first
frame on a display. I can not find their reason, but they are
annoying so for now let's ignore any errors here. -- lorentey */
#ifdef emacs
x_catch_errors (XtDisplay (w));
#endif
XChangeWindowAttributes (XtDisplay (w), XtWindow (w), mask, &xswa);
#ifdef emacs
x_uncatch_errors ();
#endif
mw->menu.windows [0].w = w;
mw->menu.windows [0].window = XtWindow (w);
mw->menu.windows [0].x = w->core.x;
mw->menu.windows [0].y = w->core.y;
mw->menu.windows [0].width = w->core.width;
mw->menu.windows [0].height = w->core.height;
set_window_type (mw->menu.windows [0].w, mw);
create_pixmap_for_menu (&mw->menu.windows [0], mw);
#ifdef HAVE_XFT
if (mw->menu.xft_font)
{
XColor colors[3];
colors[0].pixel = mw->menu.xft_fg.pixel = mw->menu.foreground;
colors[1].pixel = mw->menu.xft_bg.pixel = mw->core.background_pixel;
colors[2].pixel = mw->menu.xft_disabled_fg.pixel
= mw->menu.disabled_foreground;
XQueryColors (XtDisplay (mw), mw->core.colormap, colors, 3);
mw->menu.xft_fg.color.alpha = 0xFFFF;
mw->menu.xft_fg.color.red = colors[0].red;
mw->menu.xft_fg.color.green = colors[0].green;
mw->menu.xft_fg.color.blue = colors[0].blue;
mw->menu.xft_bg.color.alpha = 0xFFFF;
mw->menu.xft_bg.color.red = colors[1].red;
mw->menu.xft_bg.color.green = colors[1].green;
mw->menu.xft_bg.color.blue = colors[1].blue;
mw->menu.xft_disabled_fg.color.alpha = 0xFFFF;
mw->menu.xft_disabled_fg.color.red = colors[2].red;
mw->menu.xft_disabled_fg.color.green = colors[2].green;
mw->menu.xft_disabled_fg.color.blue = colors[2].blue;
}
#endif
}
/* Only the toplevel menubar/popup is a widget so it's the only one that
receives expose events through Xt. So we repaint all the other panes
when receiving an Expose event. */
static void
XlwMenuRedisplay (Widget w, XEvent *ev, Region region)
{
XlwMenuWidget mw = (XlwMenuWidget)w;
/* If we have a depth beyond 1, it's because a submenu was displayed.
If the submenu has been destroyed, set the depth back to 1. */
if (submenu_destroyed)
{
mw->menu.old_depth = 1;
submenu_destroyed = 0;
}
display_menu (mw, 0, False, NULL, NULL, NULL);
}
/* Part of a hack to make the menu redisplay when a tooltip frame
over a menu item is unmapped. */
void
xlwmenu_redisplay (Widget w)
{
XlwMenuRedisplay (w, NULL, None);
}
static void
XlwMenuDestroy (Widget w)
{
int i;
XlwMenuWidget mw = (XlwMenuWidget) w;
if (pointer_grabbed)
ungrab_all ((Widget)w, CurrentTime);
pointer_grabbed = 0;
submenu_destroyed = 1;
release_drawing_gcs (mw);
release_shadow_gcs (mw);
/* this doesn't come from the resource db but is created explicitly
so we must free it ourselves. */
XFreePixmap (XtDisplay (mw), mw->menu.gray_pixmap);
mw->menu.gray_pixmap = (Pixmap) -1;
#if 0
/* Do free mw->menu.contents because nowadays we copy it
during initialization. */
XtFree (mw->menu.contents);
#endif
/* Don't free mw->menu.contents because that comes from our creator.
The `*_stack' elements are just pointers into `contents' so leave
that alone too. But free the stacks themselves. */
if (mw->menu.old_stack) XtFree ((char *) mw->menu.old_stack);
if (mw->menu.new_stack) XtFree ((char *) mw->menu.new_stack);
/* Remember, you can't free anything that came from the resource
database. This includes:
mw->menu.cursor
mw->menu.top_shadow_pixmap
mw->menu.bottom_shadow_pixmap
mw->menu.font
Also the color cells of top_shadow_color, bottom_shadow_color,
foreground, and button_foreground will never be freed until this
client exits. Nice, eh?
*/
#ifdef HAVE_XFT
if (mw->menu.windows [0].xft_draw)
XftDrawDestroy (mw->menu.windows [0].xft_draw);
if (mw->menu.xft_font)
XftFontClose (XtDisplay (mw), mw->menu.xft_font);
#endif
if (mw->menu.windows [0].pixmap != None)
XFreePixmap (XtDisplay (mw), mw->menu.windows [0].pixmap);
/* start from 1 because the one in slot 0 is w->core.window */
for (i = 1; i < mw->menu.windows_length; i++)
{
if (mw->menu.windows [i].pixmap != None)
XFreePixmap (XtDisplay (mw), mw->menu.windows [i].pixmap);
#ifdef HAVE_XFT
if (mw->menu.windows [i].xft_draw)
XftDrawDestroy (mw->menu.windows [i].xft_draw);
#endif
}
if (mw->menu.windows)
XtFree ((char *) mw->menu.windows);
}
#ifdef HAVE_XFT
static int
fontname_changed (XlwMenuWidget newmw,
XlwMenuWidget oldmw)
{
/* This will force a new XftFont even if the same string is set.
This is good, as rendering parameters may have changed and
we just want to do a redisplay. */
return newmw->menu.fontName != oldmw->menu.fontName;
}
#endif
static Boolean
XlwMenuSetValues (Widget current, Widget request, Widget new,
ArgList args, Cardinal *num_args)
{
XlwMenuWidget oldmw = (XlwMenuWidget)current;
XlwMenuWidget newmw = (XlwMenuWidget)new;
Boolean do_redisplay = False;
if (newmw->menu.contents
&& newmw->menu.contents->contents
&& newmw->menu.contents->contents->change >= VISIBLE_CHANGE)
do_redisplay = True;
/* Do redisplay if the contents are entirely eliminated. */
if (newmw->menu.contents
&& newmw->menu.contents->contents == 0
&& newmw->menu.contents->change >= VISIBLE_CHANGE)
do_redisplay = True;
if (newmw->core.background_pixel != oldmw->core.background_pixel
|| newmw->menu.foreground != oldmw->menu.foreground
#ifdef HAVE_XFT
|| fontname_changed (newmw, oldmw)
#endif
#ifdef HAVE_X_I18N
|| newmw->menu.fontSet != oldmw->menu.fontSet
|| (newmw->menu.fontSet == NULL && newmw->menu.font != oldmw->menu.font)
#else
|| newmw->menu.font != oldmw->menu.font
#endif
)
{
int i;
release_drawing_gcs (newmw);
make_drawing_gcs (newmw);
release_shadow_gcs (newmw);
/* Cause the shadow colors to be recalculated. */
newmw->menu.top_shadow_color = -1;
newmw->menu.bottom_shadow_color = -1;
make_shadow_gcs (newmw);
do_redisplay = True;
if (XtIsRealized (current))
/* If the menu is currently displayed, change the display. */
for (i = 0; i < oldmw->menu.windows_length; i++)
{
XSetWindowBackground (XtDisplay (oldmw),
oldmw->menu.windows [i].window,
newmw->core.background_pixel);
/* clear windows and generate expose events */
XClearArea (XtDisplay (oldmw), oldmw->menu.windows[i].window,
0, 0, 0, 0, True);
}
}
#ifdef HAVE_XFT
if (fontname_changed (newmw, oldmw))
{
int i;
int screen = XScreenNumberOfScreen (newmw->core.screen);
if (newmw->menu.xft_font)
XftFontClose (XtDisplay (newmw), newmw->menu.xft_font);
openXftFont (newmw);
for (i = 0; i < newmw->menu.windows_length; i++)
{
if (newmw->menu.windows [i].xft_draw)
XftDrawDestroy (newmw->menu.windows [i].xft_draw);
newmw->menu.windows [i].xft_draw = 0;
}
if (newmw->menu.xft_font)
for (i = 0; i < newmw->menu.windows_length; i++)
newmw->menu.windows [i].xft_draw
= XftDrawCreate (XtDisplay (newmw),
newmw->menu.windows [i].window,
DefaultVisual (XtDisplay (newmw), screen),
newmw->core.colormap);
}
#endif
#ifdef HAVE_X_I18N
if (newmw->menu.fontSet != oldmw->menu.fontSet && newmw->menu.fontSet != NULL)
{
do_redisplay = True;
newmw->menu.font_extents = XExtentsOfFontSet (newmw->menu.fontSet);
}
#endif
return do_redisplay;
}
static void
XlwMenuResize (Widget w)
{
XlwMenuWidget mw = (XlwMenuWidget)w;
if (mw->menu.popped_up)
{
/* Don't allow the popup menu to resize itself. */
mw->core.width = mw->menu.windows [0].width;
mw->core.height = mw->menu.windows [0].height;
mw->core.parent->core.width = mw->core.width;
mw->core.parent->core.height = mw->core.height;
}
else
{
mw->menu.windows [0].width = mw->core.width;
mw->menu.windows [0].height = mw->core.height;
create_pixmap_for_menu (&mw->menu.windows [0], mw);
}
}
/* Action procedures */
static void
handle_single_motion_event (XlwMenuWidget mw, XMotionEvent *ev)
{
widget_value* val;
int level;
if (!map_event_to_widget_value (mw, ev, &val, &level))
pop_new_stack_if_no_contents (mw);
else
set_new_state (mw, val, level);
remap_menubar (mw);
/* Sync with the display. Makes it feel better on X terms. */
XSync (XtDisplay (mw), False);
}
static void
handle_motion_event (XlwMenuWidget mw, XMotionEvent *ev)
{
int x = ev->x_root;
int y = ev->y_root;
int state = ev->state;
XMotionEvent oldev = *ev;
/* allow motion events to be generated again */
if (ev->is_hint
&& XQueryPointer (XtDisplay (mw), ev->window,
&ev->root, &ev->subwindow,
&ev->x_root, &ev->y_root,
&ev->x, &ev->y,
&ev->state)
&& ev->state == state
&& (ev->x_root != x || ev->y_root != y))
handle_single_motion_event (mw, ev);
else
handle_single_motion_event (mw, &oldev);
}
static void
Start (Widget w, XEvent *ev, String *params, Cardinal *num_params)
{
XlwMenuWidget mw = (XlwMenuWidget)w;
if (!mw->menu.popped_up)
{
menu_post_event = *ev;
/* If event is set to CurrentTime, get the last known time stamp.
This is for calculating if (popup) menus should stay up after
a fast click. */
if (menu_post_event.xbutton.time == CurrentTime)
menu_post_event.xbutton.time
= XtLastTimestampProcessed (XtDisplay (w));
pop_up_menu (mw, (XButtonPressedEvent*) ev);
}
else
{
/* If we push a button while the menu is posted semipermanently,
releasing the button should always pop the menu down. */
next_release_must_exit = 1;
/* notes the absolute position of the menubar window */
mw->menu.windows [0].x = ev->xmotion.x_root - ev->xmotion.x;
mw->menu.windows [0].y = ev->xmotion.y_root - ev->xmotion.y;
/* handles the down like a move, slots are compatible */
ev->xmotion.is_hint = 0;
handle_motion_event (mw, &ev->xmotion);
}
}
static void
Drag (Widget w, XEvent *ev, String *params, Cardinal *num_params)
{
XlwMenuWidget mw = (XlwMenuWidget)w;
if (mw->menu.popped_up)
handle_motion_event (mw, &ev->xmotion);
}
/* Do nothing.
This is how we handle presses and releases of modifier keys. */
static void
Nothing (Widget w, XEvent *ev, String *params, Cardinal *num_params)
{
}
static widget_value *
find_first_selectable (XlwMenuWidget mw, widget_value *item, int skip_titles)
{
widget_value *current = item;
enum menu_separator separator;
while (lw_separator_p (current->name, &separator, 0) || !current->enabled
|| (skip_titles && !current->call_data && !current->contents))
if (current->next)
current=current->next;
else
return NULL;
return current;
}
static widget_value *
find_next_selectable (XlwMenuWidget mw, widget_value *item, int skip_titles)
{
widget_value *current = item;
enum menu_separator separator;
while (current->next && (current=current->next) &&
(lw_separator_p (current->name, &separator, 0) || !current->enabled
|| (skip_titles && !current->call_data && !current->contents)))
;
if (current == item)
{
if (mw->menu.old_depth < 2)
return current;
current = mw->menu.old_stack [mw->menu.old_depth - 2]->contents;
while (lw_separator_p (current->name, &separator, 0)
|| !current->enabled
|| (skip_titles && !current->call_data
&& !current->contents))
{
if (current->next)
current=current->next;
if (current == item)
break;
}
}
return current;
}
static widget_value *
find_prev_selectable (XlwMenuWidget mw, widget_value *item, int skip_titles)
{
widget_value *current = item;
widget_value *prev = item;
while ((current=find_next_selectable (mw, current, skip_titles))
!= item)
{
if (prev == current)
break;
prev=current;
}
return prev;
}
static void
Down (Widget w, XEvent *ev, String *params, Cardinal *num_params)
{
XlwMenuWidget mw = (XlwMenuWidget) w;
widget_value* selected_item = mw->menu.old_stack [mw->menu.old_depth - 1];
int popup_menu_p = mw->menu.top_depth == 1;
/* Inside top-level menu-bar? */
if (mw->menu.old_depth == mw->menu.top_depth)
/* When <down> in the menu-bar is pressed, display the corresponding
sub-menu and select the first selectable menu item there.
If this is a popup menu, skip title item of the popup. */
set_new_state (mw,
find_first_selectable (mw,
selected_item->contents,
popup_menu_p),
mw->menu.old_depth);
else
/* Highlight next possible (enabled and not separator) menu item. */
set_new_state (mw, find_next_selectable (mw, selected_item, popup_menu_p),
mw->menu.old_depth - 1);
remap_menubar (mw);
}
static void
Up (Widget w, XEvent *ev, String *params, Cardinal *num_params)
{
XlwMenuWidget mw = (XlwMenuWidget) w;
widget_value* selected_item = mw->menu.old_stack [mw->menu.old_depth - 1];
int popup_menu_p = mw->menu.top_depth == 1;
/* Inside top-level menu-bar? */
if (mw->menu.old_depth == mw->menu.top_depth)
{
/* FIXME: this is tricky. <up> in the menu-bar should select the
last selectable item in the list. So we select the first
selectable one and find the previous selectable item. Is there
a better way? */
/* If this is a popup menu, skip title item of the popup. */
set_new_state (mw,
find_first_selectable (mw,
selected_item->contents,
popup_menu_p),
mw->menu.old_depth);
remap_menubar (mw);
selected_item = mw->menu.old_stack [mw->menu.old_depth - 1];
set_new_state (mw,
find_prev_selectable (mw,
selected_item,
popup_menu_p),
mw->menu.old_depth - 1);
}
else
/* Highlight previous (enabled and not separator) menu item. */
set_new_state (mw, find_prev_selectable (mw, selected_item, popup_menu_p),
mw->menu.old_depth - 1);
remap_menubar (mw);
}
void
Left (Widget w, XEvent *ev, String *params, Cardinal *num_params)
{
XlwMenuWidget mw = (XlwMenuWidget) w;
widget_value* selected_item = mw->menu.old_stack [mw->menu.old_depth - 1];
/* Inside top-level menu-bar? */
if (mw->menu.old_depth == mw->menu.top_depth)
/* When <left> in the menu-bar is pressed, display the previous item on
the menu-bar. If the current item is the first one, highlight the
last item in the menubar (probably Help). */
set_new_state (mw, find_prev_selectable (mw, selected_item, 0),
mw->menu.old_depth - 1);
else if (mw->menu.old_depth == 1
&& selected_item->contents) /* Is this menu item expandable? */
{
set_new_state (mw, selected_item->contents, mw->menu.old_depth);
remap_menubar (mw);
selected_item = mw->menu.old_stack [mw->menu.old_depth - 1];
if (!selected_item->enabled && find_first_selectable (mw,
selected_item,
0))
set_new_state (mw, find_first_selectable (mw, selected_item, 0),
mw->menu.old_depth - 1);
}
else
{
pop_new_stack_if_no_contents (mw);
set_new_state (mw, mw->menu.old_stack [mw->menu.old_depth - 2],
mw->menu.old_depth - 2);
}
remap_menubar (mw);
}
void
Right (Widget w, XEvent *ev, String *params, Cardinal *num_params)
{
XlwMenuWidget mw = (XlwMenuWidget) w;
widget_value* selected_item = mw->menu.old_stack [mw->menu.old_depth - 1];
/* Inside top-level menu-bar? */
if (mw->menu.old_depth == mw->menu.top_depth)
/* When <right> in the menu-bar is pressed, display the next item on
the menu-bar. If the current item is the last one, highlight the
first item (probably File). */
set_new_state (mw, find_next_selectable (mw, selected_item, 0),
mw->menu.old_depth - 1);
else if (selected_item->contents) /* Is this menu item expandable? */
{
set_new_state (mw, selected_item->contents, mw->menu.old_depth);
remap_menubar (mw);
selected_item = mw->menu.old_stack [mw->menu.old_depth - 1];
if (!selected_item->enabled && find_first_selectable (mw,
selected_item,
0))
set_new_state (mw, find_first_selectable (mw, selected_item, 0),
mw->menu.old_depth - 1);
}
else
{
pop_new_stack_if_no_contents (mw);
set_new_state (mw, mw->menu.old_stack [mw->menu.old_depth - 2],
mw->menu.old_depth - 2);
}
remap_menubar (mw);
}
/* Handle key press and release events while menu is popped up.
Our action is to get rid of the menu. */
static void
Key (Widget w, XEvent *ev, String *params, Cardinal *num_params)
{
XlwMenuWidget mw = (XlwMenuWidget)w;
/* Pop down everything. */
mw->menu.new_depth = 1;
remap_menubar (mw);
if (mw->menu.popped_up)
{
mw->menu.popped_up = False;
ungrab_all ((Widget)mw, ev->xmotion.time);
if (XtIsShell (XtParent ((Widget) mw)))
XtPopdown (XtParent ((Widget) mw));
else
{
XtRemoveGrab ((Widget) mw);
display_menu (mw, 0, False, NULL, NULL, NULL);
}
}
/* callback */
XtCallCallbackList ((Widget)mw, mw->menu.select, (XtPointer)0);
}
static void
Select (Widget w, XEvent *ev, String *params, Cardinal *num_params)
{
XlwMenuWidget mw = (XlwMenuWidget)w;
widget_value* selected_item = mw->menu.old_stack [mw->menu.old_depth - 1];
/* If user releases the button quickly, without selecting anything,
after the initial down-click that brought the menu up,
do nothing. */
if ((selected_item == 0
|| ((widget_value *) selected_item)->call_data == 0)
&& !next_release_must_exit
&& (ev->xbutton.time - menu_post_event.xbutton.time
< XtGetMultiClickTime (XtDisplay (w))))
return;
/* pop down everything. */
mw->menu.new_depth = 1;
remap_menubar (mw);
if (mw->menu.popped_up)
{
mw->menu.popped_up = False;
ungrab_all ((Widget)mw, ev->xmotion.time);
if (XtIsShell (XtParent ((Widget) mw)))
XtPopdown (XtParent ((Widget) mw));
else
{
XtRemoveGrab ((Widget) mw);
display_menu (mw, 0, False, NULL, NULL, NULL);
}
}
/* callback */
XtCallCallbackList ((Widget)mw, mw->menu.select, (XtPointer)selected_item);
}
/* Special code to pop-up a menu */
static void
pop_up_menu (XlwMenuWidget mw, XButtonPressedEvent *event)
{
int x = event->x_root;
int y = event->y_root;
int w;
int h;
int borderwidth = mw->menu.shadow_thickness;
Screen* screen = XtScreen (mw);
Display *display = XtDisplay (mw);
next_release_must_exit = 0;
mw->menu.inside_entry = NULL;
XtCallCallbackList ((Widget)mw, mw->menu.open, NULL);
if (XtIsShell (XtParent ((Widget)mw)))
size_menu (mw, 0);
w = mw->menu.windows [0].width;
h = mw->menu.windows [0].height;
x -= borderwidth;
y -= borderwidth;
if (x < borderwidth)
x = borderwidth;
if (x + w + 2 * borderwidth > WidthOfScreen (screen))
x = WidthOfScreen (screen) - w - 2 * borderwidth;
if (y < borderwidth)
y = borderwidth;
if (y + h + 2 * borderwidth> HeightOfScreen (screen))
y = HeightOfScreen (screen) - h - 2 * borderwidth;
mw->menu.popped_up = True;
if (XtIsShell (XtParent ((Widget)mw)))
{
XtConfigureWidget (XtParent ((Widget)mw), x, y, w, h,
XtParent ((Widget)mw)->core.border_width);
XtPopup (XtParent ((Widget)mw), XtGrabExclusive);
display_menu (mw, 0, False, NULL, NULL, NULL);
mw->menu.windows [0].x = x + borderwidth;
mw->menu.windows [0].y = y + borderwidth;
mw->menu.top_depth = 1; /* Popup menus don't have a bar so top is 1 */
}
else
{
XEvent *ev = (XEvent *) event;
XtAddGrab ((Widget) mw, True, True);
/* notes the absolute position of the menubar window */
mw->menu.windows [0].x = ev->xmotion.x_root - ev->xmotion.x;
mw->menu.windows [0].y = ev->xmotion.y_root - ev->xmotion.y;
mw->menu.top_depth = 2;
}
#ifdef emacs
x_catch_errors (display);
#endif
if (XtGrabPointer ((Widget)mw, False,
(PointerMotionMask
| PointerMotionHintMask
| ButtonReleaseMask
| ButtonPressMask),
GrabModeAsync, GrabModeAsync, None,
mw->menu.cursor_shape,
event->time) == Success)
{
if (! GRAB_KEYBOARD
|| XtGrabKeyboard ((Widget)mw, False, GrabModeAsync,
GrabModeAsync, event->time) == Success)
{
XtSetKeyboardFocus((Widget)mw, None);
pointer_grabbed = 1;
}
else
XtUngrabPointer ((Widget)mw, event->time);
}
#ifdef emacs
if (x_had_errors_p (display))
{
pointer_grabbed = 0;
XtUngrabPointer ((Widget)mw, event->time);
}
x_uncatch_errors ();
#endif
((XMotionEvent*)event)->is_hint = 0;
handle_motion_event (mw, (XMotionEvent*)event);
}
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