libs/gtkmm2ext/utils.cc

   1 /*
   2     Copyright (C) 1999 Paul Barton-Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18     $Id$
  19 */
  20
  21 #include <map>
  22
  23 #include <gtk/gtkpaned.h>
  24 #include <gtk/gtk.h>
  25
  26 #include <gtkmm2ext/utils.h>
  27 #include <gtkmm/widget.h>
  28 #include <gtkmm/button.h>
  29 #include <gtkmm/window.h>
  30 #include <gtkmm/paned.h>
  31 #include <gtkmm/comboboxtext.h>
  32
  33 #include "i18n.h"
  34
  35 using namespace std;
  36
  37 void
  38 Gtkmm2ext::get_ink_pixel_size (Glib::RefPtr<Pango::Layout> layout,
  39                                int& width,
  40                                int& height)
  41 {
  42         Pango::Rectangle ink_rect = layout->get_ink_extents ();
  43
  44         width = (ink_rect.get_width() + PANGO_SCALE / 2) / PANGO_SCALE;
  45         height = (ink_rect.get_height() + PANGO_SCALE / 2) / PANGO_SCALE;
  46 }
  47
  48 void
  49 get_pixel_size (Glib::RefPtr<Pango::Layout> layout,
  50                                int& width,
  51                                int& height)
  52 {
  53         layout->get_pixel_size (width, height);
  54 }
  55
  56 void
  57 Gtkmm2ext::set_size_request_to_display_given_text (Gtk::Widget &w, const gchar *text,
  58                                                    gint hpadding, gint vpadding)
  59
  60 {
  61         int width, height;
  62         w.ensure_style ();
  63
  64         get_pixel_size (w.create_pango_layout (text), width, height);
  65         w.set_size_request(width + hpadding, height + vpadding);
  66 }
  67
  68 void
  69 Gtkmm2ext::set_size_request_to_display_given_text (Gtk::Widget &w,
  70                                                    const std::vector<std::string>& strings,
  71                                                    gint hpadding, gint vpadding)
  72
  73 {
  74         int width, height;
  75         int width_max = 0;
  76         int height_max = 0;
  77         w.ensure_style ();
  78
  79         for (vector<string>::const_iterator i = strings.begin(); i != strings.end(); ++i) {
  80                 get_pixel_size (w.create_pango_layout (*i), width, height);
  81                 width_max = max(width_max,width);
  82                 height_max = max(height_max, height);
  83         }
  84         w.set_size_request(width_max + hpadding, height_max + vpadding);
  85 }
  86
  87 void
  88 Gtkmm2ext::init ()
  89 {
  90         // Necessary for gettext
  91         (void) bindtextdomain(PACKAGE, LOCALEDIR);
  92 }
  93
  94 void
  95 Gtkmm2ext::set_popdown_strings (Gtk::ComboBoxText& cr, const vector<string>& strings, bool set_size, gint hpadding, gint vpadding)
  96 {
  97         vector<string>::const_iterator i;
  98
  99         cr.clear ();
 100
 101         if (set_size) {
 102                 vector<string> copy;
 103
 104                 for (i = strings.begin(); i != strings.end(); ++i) {
 105                         if ((*i).find_first_of ("gy") != string::npos) {
 106                                 /* contains a descender */
 107                                 break;
 108                         }
 109                 }
 110
 111                 if (i == strings.end()) {
 112
 113                         /* make a copy of the strings then add one that has a descener */
 114
 115                         copy = strings;
 116                         copy.push_back ("g");
 117                         set_size_request_to_display_given_text (cr, copy, COMBO_FUDGE+10+hpadding, 15+vpadding);
 118
 119                 } else {
 120                         set_size_request_to_display_given_text (cr, strings, COMBO_FUDGE+10+hpadding, 15+vpadding);
 121                 }
 122         }
 123
 124         for (i = strings.begin(); i != strings.end(); ++i) {
 125                 cr.append_text (*i);
 126         }
 127 }
 128
 129 GdkWindow*
 130 Gtkmm2ext::get_paned_handle (Gtk::Paned& paned)
 131 {
 132         return GTK_PANED(paned.gobj())->handle;
 133 }
 134
 135 void
 136 Gtkmm2ext::set_decoration (Gtk::Window* win, Gdk::WMDecoration decor)
 137 {
 138         win->get_window()->set_decorations (decor);
 139 }
 140
 141 void Gtkmm2ext::set_treeview_header_as_default_label(Gtk::TreeViewColumn* c)
 142 {
 143         gtk_tree_view_column_set_widget( c->gobj(), GTK_WIDGET(0) );
 144 }
 145
 146 void
 147 Gtkmm2ext::detach_menu (Gtk::Menu& menu)
 148 {
 149         /* its possible for a Gtk::Menu to have no gobj() because it has
 150            not yet been instantiated. Catch this and provide a safe
 151            detach method.
 152         */
 153         if (menu.gobj()) {
 154                 if (menu.get_attach_widget()) {
 155                         menu.detach ();
 156                 }
 157         }
 158 }
 159
 160 bool
 161 Gtkmm2ext::possibly_translate_keyval_to_make_legal_accelerator (uint32_t& keyval)
 162 {
 163         int fakekey = GDK_VoidSymbol;
 164
 165         switch (keyval) {
 166         case GDK_Tab:
 167         case GDK_ISO_Left_Tab:
 168                 fakekey = GDK_nabla;
 169                 break;
 170
 171         case GDK_Up:
 172                 fakekey = GDK_uparrow;
 173                 break;
 174
 175         case GDK_Down:
 176                 fakekey = GDK_downarrow;
 177                 break;
 178
 179         case GDK_Right:
 180                 fakekey = GDK_rightarrow;
 181                 break;
 182
 183         case GDK_Left:
 184                 fakekey = GDK_leftarrow;
 185                 break;
 186
 187         case GDK_Return:
 188                 fakekey = GDK_3270_Enter;
 189                 break;
 190
 191         case GDK_KP_Enter:
 192                 fakekey = GDK_F35;
 193                 break;
 194
 195         default:
 196                 break;
 197         }
 198
 199         if (fakekey != GDK_VoidSymbol) {
 200                 keyval = fakekey;
 201                 return true;
 202         }
 203
 204         return false;
 205 }
 206
 207 uint32_t
 208 Gtkmm2ext::possibly_translate_legal_accelerator_to_real_key (uint32_t keyval)
 209 {
 210         switch (keyval) {
 211         case GDK_nabla:
 212                 return GDK_Tab;
 213                 break;
 214
 215         case GDK_uparrow:
 216                 return GDK_Up;
 217                 break;
 218
 219         case GDK_downarrow:
 220                 return GDK_Down;
 221                 break;
 222
 223         case GDK_rightarrow:
 224                 return GDK_Right;
 225                 break;
 226
 227         case GDK_leftarrow:
 228                 return GDK_Left;
 229                 break;
 230
 231         case GDK_3270_Enter:
 232                 return GDK_Return;
 233
 234         case GDK_F35:
 235                 return GDK_KP_Enter;
 236                 break;
 237         }
 238
 239         return keyval;
 240 }
 241