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- /* Implements a lightweight menubar widget.
- Copyright (C) 1992 Lucid, 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; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Created by devin@lucid.com */
-
- #include <stdio.h>
-
- #include <sys/types.h>
- #include <X11/Xos.h>
- #include <X11/IntrinsicP.h>
- #include <X11/StringDefs.h>
- #include <X11/cursorfont.h>
- #include <X11/bitmaps/gray>
- #include "xlwmenuP.h"
-
- static int pointer_grabbed;
- static XEvent menu_post_event;
-
- static char
- xlwMenuTranslations [] =
- "<BtnDown>: start()\n\
- <Motion>: drag()\n\
- <BtnUp>: select()\n\
- ";
-
- #define offset(field) XtOffset(XlwMenuWidget, field)
- static XtResource
- xlwMenuResources[] =
- {
- {XtNfont, XtCFont, XtRFontStruct, sizeof(XFontStruct *),
- offset(menu.font),XtRString, "XtDefaultFont"},
- {XtNforeground, XtCForeground, XtRPixel, sizeof(Pixel),
- offset(menu.foreground), XtRString, "XtDefaultForeground"},
- {XtNbuttonForeground, XtCButtonForeground, XtRPixel, sizeof(Pixel),
- offset(menu.button_foreground), XtRString, "XtDefaultForeground"},
- {XtNmargin, XtCMargin, XtRDimension, sizeof(Dimension),
- offset(menu.margin), XtRImmediate, (XtPointer)0},
- {XtNhorizontalSpacing, XtCMargin, XtRDimension, sizeof(Dimension),
- offset(menu.horizontal_spacing), XtRImmediate, (XtPointer)3},
- {XtNverticalSpacing, XtCMargin, XtRDimension, sizeof(Dimension),
- offset(menu.vertical_spacing), XtRImmediate, (XtPointer)1},
- {XtNarrowSpacing, XtCMargin, XtRDimension, sizeof(Dimension),
- offset(menu.arrow_spacing), XtRImmediate, (XtPointer)10},
-
- {XmNshadowThickness, XmCShadowThickness, XtRDimension,
- sizeof (Dimension), offset (menu.shadow_thickness),
- XtRImmediate, (XtPointer) 2},
- {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},
- {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();
- static void XlwMenuRealize();
- static void XlwMenuRedisplay();
- static void XlwMenuResize();
- static void XlwMenuInitialize();
- static void XlwMenuRedisplay();
- static void XlwMenuDestroy();
- static void XlwMenuClassInitialize();
- static void Start();
- static void Drag();
- static void Select();
-
- static XtActionsRec
- xlwMenuActionsList [] =
- {
- {"start", Start},
- {"drag", Drag},
- {"select", Select},
- };
-
- #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 */
- TRUE, /* 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;
-
- static int next_release_must_exit;
-
- /* Utilities */
- static void
- push_new_stack (mw, val)
- 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 (mw)
- XlwMenuWidget mw;
- {
- if (mw->menu.new_depth)
- {
- if (!mw->menu.new_stack [mw->menu.new_depth - 1]->contents)
- mw->menu.new_depth -= 1;
- }
- }
-
- static void
- make_old_stack_space (mw, n)
- 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 Boolean
- all_dashes_p (s)
- char *s;
- {
- char* p;
- for (p = s; *p == '-'; p++);
- return !*p;
- }
-
- int
- string_width (mw, s)
- XlwMenuWidget mw;
- char *s;
- {
- XCharStruct xcs;
- int drop;
-
- XTextExtents (mw->menu.font, s, strlen (s), &drop, &drop, &drop, &xcs);
- return xcs.width;
- }
-
- static int
- arrow_width (mw)
- XlwMenuWidget mw;
- {
- return mw->menu.font->ascent / 2 | 1;
- }
-
- static XtResource
- nameResource[] =
- {
- {"labelString", "LabelString", XtRString, sizeof(String),
- 0, XtRImmediate, 0},
- };
-
- static char*
- resource_widget_value (mw, val)
- 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 (mw, val, horizontal_p, label_width, rest_width, height)
- XlwMenuWidget mw;
- widget_value* val;
- int horizontal_p;
- int* label_width;
- int* rest_width;
- int* height;
- {
- if (all_dashes_p (val->name))
- {
- *height = 2;
- *label_width = 1;
- *rest_width = 0;
- }
- else
- {
- *height =
- mw->menu.font->ascent + mw->menu.font->descent
- + 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)
- *rest_width += arrow_width (mw) + mw->menu.arrow_spacing;
- else if (val->key)
- *rest_width +=
- string_width (mw, val->key) + mw->menu.arrow_spacing;
- }
- }
- }
-
- static void
- size_menu (mw, level)
- XlwMenuWidget mw;
- int level;
- {
- int label_width = 0;
- int rest_width = 0;
- int max_rest_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 ();
-
- ws = &mw->menu.windows [level];
- ws->width = 0;
- ws->height = 0;
- ws->label_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,
- &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;
- ws->height += height;
- }
- }
-
- if (horizontal_p)
- ws->label_width = 0;
- else
- ws->width = ws->label_width + max_rest_width;
-
- ws->width += 2 * mw->menu.shadow_thickness;
- ws->height += 2 * mw->menu.shadow_thickness;
- }
-
-
- /* Display code */
- static void
- draw_arrow (mw, window, gc, x, y, width)
- XlwMenuWidget mw;
- Window window;
- GC gc;
- int x;
- int y;
- int width;
- {
- XPoint points [3];
- points [0].x = x;
- points [0].y = y + mw->menu.font->ascent;
- points [1].x = x;
- points [1].y = y;
- points [2].x = x + width;
- points [2].y = y + mw->menu.font->ascent / 2;
-
- XFillPolygon (XtDisplay (mw), window, gc, points, 3, Convex,
- CoordModeOrigin);
- }
-
- static void
- draw_shadow_rectangle (mw, window, x, y, width, height, erase_p)
- XlwMenuWidget mw;
- Window window;
- int x;
- int y;
- int width;
- int height;
- int erase_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];
- 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);
- }
-
-
- /* Display the menu item and increment where.x and where.y to show how large
- ** the menu item was.
- */
- static void
- display_menu_item (mw, val, ws, where, highlighted_p, horizontal_p, just_compute_p)
- 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_ascent = mw->menu.font->ascent;
- int font_descent = mw->menu.font->descent;
- int shadow = mw->menu.shadow_thickness;
- int separator_p = all_dashes_p (val->name);
- int h_spacing = mw->menu.horizontal_spacing;
- int v_spacing = mw->menu.vertical_spacing;
- int label_width;
- int rest_width;
- int height;
- int width;
- int button_p;
-
- /* compute the sizes of the item */
- size_menu_item (mw, val, horizontal_p, &label_width, &rest_width, &height);
-
- if (horizontal_p)
- width = label_width + rest_width;
- else
- {
- label_width = ws->label_width;
- width = ws->width - 2 * shadow;
- }
-
- /* see if it should be a button in the menubar */
- button_p = horizontal_p && val->call_data;
-
- /* 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;
-
- /* pick the foreground and background GC. */
- if (val->enabled)
- text_gc = button_p ? mw->menu.button_gc : mw->menu.foreground_gc;
- else
- text_gc =
- button_p ? mw->menu.inactive_button_gc : mw->menu.inactive_gc;
- deco_gc = mw->menu.foreground_gc;
-
- if (separator_p)
- {
- XDrawLine (XtDisplay (mw), ws->window, mw->menu.shadow_bottom_gc,
- x, y, x + width, y);
- XDrawLine (XtDisplay (mw), ws->window, mw->menu.shadow_top_gc,
- x, y + 1, x + width, y + 1);
- }
- else
- {
- char* display_string = resource_widget_value (mw, val);
- draw_shadow_rectangle (mw, ws->window, x, y, width, height, True);
- XDrawString (XtDisplay (mw), ws->window, text_gc,
- x + h_spacing + shadow,
- y + v_spacing + shadow + font_ascent,
- display_string, strlen (display_string));
-
- if (!horizontal_p)
- {
- if (val->contents)
- {
- int a_w = arrow_width (mw);
- draw_arrow (mw, ws->window, deco_gc,
- x + width - arrow_width (mw)
- - mw->menu.horizontal_spacing
- - mw->menu.shadow_thickness,
- y + v_spacing + shadow, a_w);
- }
- else if (val->key)
- {
- XDrawString (XtDisplay (mw), ws->window, text_gc,
- x + label_width + mw->menu.arrow_spacing,
- y + v_spacing + shadow + font_ascent,
- val->key, strlen (val->key));
- }
- }
-
- else if (button_p)
- {
- #if 1
- XDrawRectangle (XtDisplay (mw), ws->window, deco_gc,
- x + shadow, y + shadow,
- label_width + h_spacing - 1,
- font_ascent + font_descent + 2 * v_spacing - 1);
- draw_shadow_rectangle (mw, ws->window, x, y, width, height,
- False);
- #else
- highlighted_p = True;
- #endif
- }
- else
- {
- XDrawRectangle (XtDisplay (mw), ws->window,
- mw->menu.background_gc,
- x + shadow, y + shadow,
- label_width + h_spacing - 1,
- font_ascent + font_descent + 2 * v_spacing - 1);
- draw_shadow_rectangle (mw, ws->window, x, y, width, height,
- True);
- }
-
- if (highlighted_p)
- draw_shadow_rectangle (mw, ws->window, x, y, width, height, False);
- }
- }
-
- where->x += width;
- where->y += height;
- }
-
- static void
- display_menu (mw, level, just_compute_p, highlighted_pos, hit, hit_return,
- this, that)
- XlwMenuWidget mw;
- int level;
- Boolean just_compute_p;
- XPoint* highlighted_pos;
- XPoint* hit;
- widget_value** hit_return;
- widget_value* this;
- widget_value* that;
- {
- widget_value* val;
- widget_value* following_item;
- window_state* ws;
- XPoint where;
- int horizontal_p = mw->menu.horizontal && (level == 0);
- int highlighted_p;
- int just_compute_this_one_p;
-
- if (level >= mw->menu.old_depth)
- abort ();
-
- 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];
- 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;
- }
-
- just_compute_this_one_p =
- just_compute_p || ((this || that) && val != this && val != that);
-
- display_menu_item (mw, val, ws, &where, highlighted_p, horizontal_p,
- just_compute_this_one_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)
- && !all_dashes_p (val->name))
- *hit_return = val;
-
- if (horizontal_p)
- where.y = 0;
- else
- where.x = 0;
- }
-
- if (!just_compute_p)
- draw_shadow_rectangle (mw, ws->window, 0, 0, ws->width, ws->height, False);
- }
-
- /* Motion code */
- static void
- set_new_state (mw, val, level)
- 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
- make_windows_if_needed (mw, n)
- XlwMenuWidget mw;
- int n;
- {
- int i;
- int start_at;
- XSetWindowAttributes xswa;
- int mask;
- Window root = RootWindowOfScreen (DefaultScreenOfDisplay (XtDisplay (mw)));
- window_state* windows;
-
- if (mw->menu.windows_length >= n)
- return;
-
- xswa.save_under = True;
- xswa.override_redirect = True;
- xswa.background_pixel = mw->core.background_pixel;
- xswa.border_pixel = mw->core.border_pixel;
- xswa.event_mask =
- ExposureMask | PointerMotionMask | PointerMotionHintMask
- | ButtonReleaseMask | ButtonPressMask;
- xswa.cursor = mw->menu.cursor_shape;
- mask = CWSaveUnder | CWOverrideRedirect | CWBackPixel | CWBorderPixel
- | CWEventMask | CWCursor;
-
- 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++)
- {
- windows [i].x = 0;
- windows [i].y = 0;
- windows [i].width = 1;
- windows [i].height = 1;
- windows [i].window =
- XCreateWindow (XtDisplay (mw), root, 0, 0, 1, 1,
- 0, 0, CopyFromParent, CopyFromParent, mask, &xswa);
- }
- }
-
- /* Make the window fit in the screen */
- static void
- fit_to_screen (mw, ws, previous_ws, horizontal_p)
- XlwMenuWidget mw;
- window_state* ws;
- window_state* previous_ws;
- Boolean horizontal_p;
- {
- int screen_width = WidthOfScreen (XtScreen (mw));
- int screen_height = HeightOfScreen (XtScreen (mw));
-
- if (ws->x < 0)
- ws->x = 0;
- else if (ws->x + ws->width > screen_width)
- {
- if (!horizontal_p)
- ws->x = previous_ws->x - ws->width;
- else
- ws->x = screen_width - ws->width;
- }
- 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;
- }
- }
-
- /* Updates old_stack from new_stack and redisplays. */
- static void
- remap_menubar (mw)
- 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;
-
- /* 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++)
- old_stack [i] = new_stack [i];
- mw->menu.old_depth = new_depth;
-
- /* refresh the last seletion */
- selection_position.x = 0;
- selection_position.y = 0;
- display_menu (mw, last_same, new_selection == old_selection,
- &selection_position, NULL, NULL, old_selection, new_selection);
-
- /* Now popup 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.shadow_thickness;
- ws->y =
- previous_ws->y + selection_position.y + mw->menu.shadow_thickness;
-
- size_menu (mw, i);
-
- fit_to_screen (mw, ws, previous_ws, mw->menu.horizontal && i == 1);
-
- XClearWindow (XtDisplay (mw), ws->window);
- XMoveResizeWindow (XtDisplay (mw), ws->window, ws->x, ws->y,
- ws->width, ws->height);
- XMapRaised (XtDisplay (mw), ws->window);
- display_menu (mw, i, False, &selection_position, NULL, NULL, NULL, NULL);
- }
-
- /* unmap the menus that popped down */
- for (i = new_depth - 1; i < old_depth; i++)
- if (i >= new_depth || !new_stack [i]->contents)
- XUnmapWindow (XtDisplay (mw), windows [i].window);
- }
-
- static Boolean
- motion_event_is_in_menu (mw, ev, level, relative_pos)
- XlwMenuWidget mw;
- XMotionEvent* ev;
- int level;
- XPoint* relative_pos;
- {
- window_state* ws = &mw->menu.windows [level];
- int x = level == 0 ? ws->x : ws->x + mw->menu.shadow_thickness;
- int y = level == 0 ? ws->y : ws->y + mw->menu.shadow_thickness;
- relative_pos->x = ev->x_root - x;
- relative_pos->y = ev->y_root - y;
- return (x < ev->x_root && ev->x_root < x + ws->width
- && y < ev->y_root && ev->y_root < y + ws->height);
- }
-
- static Boolean
- map_event_to_widget_value (mw, ev, val, level)
- XlwMenuWidget mw;
- XMotionEvent* ev;
- widget_value** val;
- int* level;
- {
- int i;
- XPoint relative_pos;
- window_state* ws;
-
- *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))
- {
- display_menu (mw, i, True, NULL, &relative_pos, val, NULL, NULL);
-
- if (*val)
- {
- *level = i + 1;
- return True;
- }
- }
- }
- return False;
- }
-
- /* Procedures */
- static void
- make_drawing_gcs (mw)
- XlwMenuWidget mw;
- {
- XGCValues xgcv;
-
- xgcv.font = mw->menu.font->fid;
- xgcv.foreground = mw->menu.foreground;
- xgcv.background = mw->core.background_pixel;
- mw->menu.foreground_gc = XtGetGC ((Widget)mw,
- GCFont | GCForeground | GCBackground,
- &xgcv);
-
- xgcv.font = mw->menu.font->fid;
- xgcv.foreground = mw->menu.button_foreground;
- xgcv.background = mw->core.background_pixel;
- mw->menu.button_gc = XtGetGC ((Widget)mw,
- GCFont | GCForeground | GCBackground,
- &xgcv);
-
- xgcv.font = mw->menu.font->fid;
- xgcv.foreground = mw->menu.foreground;
- xgcv.background = mw->core.background_pixel;
- xgcv.fill_style = FillStippled;
- xgcv.stipple = mw->menu.gray_pixmap;
- mw->menu.inactive_gc = XtGetGC ((Widget)mw,
- (GCFont | GCForeground | GCBackground
- | GCFillStyle | GCStipple), &xgcv);
-
- xgcv.font = mw->menu.font->fid;
- 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,
- (GCFont | GCForeground | GCBackground
- | GCFillStyle | GCStipple), &xgcv);
-
- xgcv.font = mw->menu.font->fid;
- xgcv.foreground = mw->core.background_pixel;
- xgcv.background = mw->menu.foreground;
- mw->menu.background_gc = XtGetGC ((Widget)mw,
- GCFont | GCForeground | GCBackground,
- &xgcv);
- }
-
- static void
- release_drawing_gcs (mw)
- XlwMenuWidget mw;
- {
- XtReleaseGC ((Widget) mw, mw->menu.foreground_gc);
- XtReleaseGC ((Widget) mw, mw->menu.button_gc);
- XtReleaseGC ((Widget) mw, mw->menu.inactive_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.inactive_gc = (GC) -1;
- mw->menu.inactive_button_gc = (GC) -1;
- mw->menu.background_gc = (GC) -1;
- }
-
- #define MINL(x,y) ((((unsigned long) (x)) < ((unsigned long) (y))) \
- ? ((unsigned long) (x)) : ((unsigned long) (y)))
-
- static void
- make_shadow_gcs (mw)
- XlwMenuWidget mw;
- {
- XGCValues xgcv;
- unsigned long pm = 0;
- Display *dpy = XtDisplay ((Widget) mw);
- Colormap cmap = DefaultColormapOfScreen (XtScreen ((Widget) mw));
- XColor topc, botc;
- int top_frobbed = 0, bottom_frobbed = 0;
-
- if (mw->menu.top_shadow_color == -1)
- mw->menu.top_shadow_color = mw->core.background_pixel;
- if (mw->menu.bottom_shadow_color == -1)
- mw->menu.bottom_shadow_color = mw->menu.foreground;
-
- if (mw->menu.top_shadow_color == mw->core.background_pixel ||
- mw->menu.top_shadow_color == mw->menu.foreground)
- {
- topc.pixel = mw->core.background_pixel;
- 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))
- {
- mw->menu.top_shadow_color = topc.pixel;
- 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;
- XQueryColor (dpy, cmap, &botc);
- botc.red *= 0.6;
- botc.green *= 0.6;
- botc.blue *= 0.6;
- if (XAllocColor (dpy, cmap, &botc))
- {
- mw->menu.bottom_shadow_color = botc.pixel;
- bottom_frobbed = 1;
- }
- }
-
- if (top_frobbed && bottom_frobbed)
- {
- int top_avg = ((topc.red / 3) + (topc.green / 3) + (topc.blue / 3));
- int bot_avg = ((botc.red / 3) + (botc.green / 3) + (botc.blue / 3));
- if (bot_avg > top_avg)
- {
- Pixel tmp = mw->menu.top_shadow_color;
- mw->menu.top_shadow_color = mw->menu.bottom_shadow_color;
- mw->menu.bottom_shadow_color = tmp;
- }
- else if (topc.pixel == botc.pixel)
- {
- if (botc.pixel == mw->menu.foreground)
- mw->menu.top_shadow_color = mw->core.background_pixel;
- else
- 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;
- 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;
- 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 (mw)
- XlwMenuWidget mw;
- {
- XtReleaseGC ((Widget) mw, mw->menu.shadow_top_gc);
- XtReleaseGC ((Widget) mw, mw->menu.shadow_bottom_gc);
- }
-
- static void
- XlwMenuInitialize (request, new, args, num_args)
- Widget request;
- Widget new;
- ArgList args;
- Cardinal *num_args;
- {
- /* Get the GCs and the widget size */
- XlwMenuWidget mw = (XlwMenuWidget)new;
-
- XSetWindowAttributes xswa;
- int mask;
-
- 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. */
- lwlib_bcopy (mw->menu.contents, tem, 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, 1, 0, 1);
-
- make_drawing_gcs (mw);
- make_shadow_gcs (mw);
-
- xswa.background_pixel = mw->core.background_pixel;
- xswa.border_pixel = mw->core.border_pixel;
- mask = CWBackPixel | CWBorderPixel;
-
- 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;
- size_menu (mw, 0);
-
- mw->core.width = mw->menu.windows [0].width;
- mw->core.height = mw->menu.windows [0].height;
- }
-
- static void
- XlwMenuClassInitialize ()
- {
- }
-
- static void
- XlwMenuRealize (w, valueMask, attributes)
- 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;
- XChangeWindowAttributes (XtDisplay (w), XtWindow (w), mask, &xswa);
-
- 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;
- }
-
- /* 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 (w, ev, region)
- Widget w;
- XEvent* ev;
- Region region;
- {
- XlwMenuWidget mw = (XlwMenuWidget)w;
- int i;
-
- /* 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;
- }
-
- for (i = 0; i < mw->menu.old_depth; i++)
- display_menu (mw, i, False, NULL, NULL, NULL, NULL, NULL);
- }
-
- static void
- XlwMenuDestroy (w)
- Widget w;
- {
- int i;
- XlwMenuWidget mw = (XlwMenuWidget) w;
-
- if (pointer_grabbed)
- XtUngrabPointer ((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?
- */
-
- /* start from 1 because the one in slot 0 is w->core.window */
- for (i = 1; i < mw->menu.windows_length; i++)
- XDestroyWindow (XtDisplay (mw), mw->menu.windows [i].window);
- if (mw->menu.windows)
- XtFree ((char *) mw->menu.windows);
- }
-
- static Boolean
- XlwMenuSetValues (current, request, new)
- Widget current;
- Widget request;
- Widget new;
- {
- XlwMenuWidget oldmw = (XlwMenuWidget)current;
- XlwMenuWidget newmw = (XlwMenuWidget)new;
- Boolean redisplay = False;
- int i;
-
- if (newmw->menu.contents
- && newmw->menu.contents->contents
- && newmw->menu.contents->contents->change >= VISIBLE_CHANGE)
- redisplay = True;
-
- if (newmw->core.background_pixel != oldmw->core.background_pixel
- || newmw->menu.foreground != oldmw->menu.foreground
- || newmw->menu.font != oldmw->menu.font)
- {
- release_drawing_gcs (newmw);
- make_drawing_gcs (newmw);
- redisplay = True;
-
- 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);
- }
- }
-
- return redisplay;
- }
-
- static void
- XlwMenuResize (w)
- 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;
- }
- }
-
- /* Action procedures */
- static void
- handle_single_motion_event (mw, ev)
- 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);
-
- #if 0
- /* Sync with the display. Makes it feel better on X terms. */
- XSync (XtDisplay (mw), False);
- #endif
- }
-
- static void
- handle_motion_event (mw, ev)
- XlwMenuWidget mw;
- XMotionEvent* ev;
- {
- int x = ev->x_root;
- int y = ev->y_root;
- int state = ev->state;
-
- handle_single_motion_event (mw, 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);
- }
-
- static void
- Start (w, ev, params, num_params)
- Widget w;
- XEvent *ev;
- String *params;
- Cardinal *num_params;
- {
- XlwMenuWidget mw = (XlwMenuWidget)w;
-
- if (!mw->menu.popped_up)
- {
- menu_post_event = *ev;
- next_release_must_exit = 0;
- }
- 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;
-
- XtCallCallbackList ((Widget)mw, mw->menu.open, NULL);
-
- /* 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 */
- handle_motion_event (mw, &ev->xmotion);
- }
-
- static void
- Drag (w, ev, params, num_params)
- Widget w;
- XEvent *ev;
- String *params;
- Cardinal *num_params;
- {
- XlwMenuWidget mw = (XlwMenuWidget)w;
- handle_motion_event (mw, &ev->xmotion);
- }
-
- static void
- Select (w, ev, params, num_params)
- 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;
- XtUngrabPointer ((Widget)mw, ev->xmotion.time);
- XtPopdown (XtParent (mw));
- }
-
- /* callback */
- XtCallCallbackList ((Widget)mw, mw->menu.select, (XtPointer)selected_item);
-
- }
-
-
- /* Special code to pop-up a menu */
- void
- pop_up_menu (mw, event)
- 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);
-
- next_release_must_exit = 0;
-
- XtCallCallbackList ((Widget)mw, mw->menu.open, NULL);
-
- 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;
- XtConfigureWidget (XtParent (mw), x, y, w, h,
- XtParent (mw)->core.border_width);
- XtPopup (XtParent (mw), XtGrabExclusive);
- display_menu (mw, 0, False, NULL, NULL, NULL, NULL, NULL);
- #ifdef emacs
- x_catch_errors ();
- #endif
- XtGrabPointer ((Widget)mw, False,
- (PointerMotionMask | PointerMotionHintMask | ButtonReleaseMask
- | ButtonPressMask),
- GrabModeAsync, GrabModeAsync, None, mw->menu.cursor_shape,
- event->time);
- pointer_grabbed = 1;
- #ifdef emacs
- if (x_had_errors_p ())
- {
- pointer_grabbed = 0;
- XtUngrabPointer ((Widget)mw, event->time);
- }
- x_uncatch_errors ();
- #endif
-
- mw->menu.windows [0].x = x + borderwidth;
- mw->menu.windows [0].y = y + borderwidth;
-
- handle_motion_event (mw, (XMotionEvent*)event);
- }
-