/* 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, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Created by devin@lucid.com */ #include #include #include #include #include #include #include #include #include "xlwmenuP.h" static int pointer_grabbed; static XEvent menu_post_event; XFontStruct *xlwmenu_default_font; static char xlwMenuTranslations [] = ": start()\n\ : drag()\n\ : select()\n\ Shift_L: nothing()\n\ Shift_R: nothing()\n\ Meta_L: nothing()\n\ Meta_R: nothing()\n\ Control_L: nothing()\n\ Control_R: nothing()\n\ Hyper_L: nothing()\n\ Hyper_R: nothing()\n\ Super_L: nothing()\n\ Super_R: nothing()\n\ Alt_L: nothing()\n\ Alt_R: nothing()\n\ Caps_Lock: nothing()\n\ Shift_Lock: nothing()\n\ Shift_L: nothing()\n\ Shift_R: nothing()\n\ Meta_L: nothing()\n\ Meta_R: nothing()\n\ Control_L: nothing()\n\ Control_R: nothing()\n\ Hyper_L: nothing()\n\ Hyper_R: nothing()\n\ Super_L: nothing()\n\ Super_R: nothing()\n\ Alt_L: nothing()\n\ Alt_R: nothing()\n\ Caps_Lock: nothing()\n\ Shift_Lock:nothing()\n\ : key()\n\ : key()\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 void Key(); static void Nothing(); static XtActionsRec xlwMenuActionsList [] = { {"start", Start}, {"drag", Drag}, {"select", Select}, {"key", Key}, {"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 */ 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; { unsigned int label_width = 0; int rest_width = 0; int max_rest_width = 0; unsigned 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; } #if 0 /* see if it should be a button in the menubar */ button_p = horizontal_p && val->call_data; #endif button_p = 0; /* 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 { int x_offset = x + h_spacing + shadow; char* display_string = resource_widget_value (mw, val); draw_shadow_rectangle (mw, ws->window, x, y, width, height, True); /* 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; } XDrawString (XtDisplay (mw), ws->window, text_gc, x_offset, 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; /* This is set nonzero if the element containing HIGHLIGHTED_POS is disabled, so that we do not return any subsequent element either. */ int no_return = 0; 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) && !no_return) { if (val->enabled) *hit_return = val; else no_return = 1; } 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; { 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) ws->x = previous_ws->x - ws->width; 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; } } /* 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 selection */ 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 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.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, mw, args, num_args) Widget request; XlwMenuWidget mw; ArgList args; Cardinal *num_args; { /* Get the GCs and the widget size */ 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, (unsigned long)1, (unsigned long)0, 1); /* I don't understand why this ends up 0 sometimes, but it does. This kludge works around it. Can anyone find a real fix? -- rms. */ if (mw->menu.font == 0) mw->menu.font = xlwmenu_default_font; 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; /* Do redisplay if the contents are entirely eliminated. */ if (newmw->menu.contents && newmw->menu.contents->contents == 0 && newmw->menu.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); /* Sync with the display. Makes it feel better on X terms. */ XSync (XtDisplay (mw), False); } 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; pop_up_menu (mw, 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 */ 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; 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 (w, ev, params, num_params) Widget w; XEvent *ev; String *params; Cardinal *num_params; { } /* Handle key press and release events while menu is popped up. Our action is to get rid of the menu. */ static void Key (w, ev, params, num_params) 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; XtUngrabPointer ((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, NULL, NULL); } } /* callback */ XtCallCallbackList ((Widget)mw, mw->menu.select, (XtPointer)0); } 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); if (XtIsShell (XtParent ((Widget) mw))) XtPopdown (XtParent ((Widget) mw)); else { XtRemoveGrab ((Widget) mw); display_menu (mw, 0, False, NULL, NULL, NULL, NULL, NULL); } } /* 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); Display *display = XtDisplay (mw); int count; next_release_must_exit = 0; 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, NULL, NULL); mw->menu.windows [0].x = x + borderwidth; mw->menu.windows [0].y = y + borderwidth; } 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; } #ifdef emacs count = x_catch_errors (display); #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 (display)) { pointer_grabbed = 0; XtUngrabPointer ((Widget)mw, event->time); } x_uncatch_errors (display, count); #endif handle_motion_event (mw, (XMotionEvent*)event); }