git.sur5r.net Git - glabels/blob - glabels2/src/font-combo.c

   1 /*
   2  *  font-combo.c
   3  *  Copyright (C) 2009  Jim Evins <evins@snaught.com>.
   4  *
   5  *  This file is part of gLabels.
   6  *
   7  *  gLabels is free software: you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation, either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  gLabels is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with gLabels.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <config.h>
  22
  23 #include "font-combo.h"
  24
  25 #include "font-combo-menu.h"
  26 #include "font-util.h"
  27 #include <glib/gi18n.h>
  28 #include <gtk/gtkhbox.h>
  29 #include <gtk/gtklabel.h>
  30 #include <gtk/gtkarrow.h>
  31 #include "marshal.h"
  32
  33
  34
  35 /*========================================================*/
  36 /* Private types.                                         */
  37 /*========================================================*/
  38
  39 /** GL_FONT_COMBO Private fields */
  40 struct _glFontComboPrivate {
  41
  42         gchar      *font_family;
  43
  44         GtkWidget  *label;
  45
  46         GtkWidget  *menu;
  47 };
  48
  49 enum {
  50         CHANGED,
  51         LAST_SIGNAL
  52 };
  53
  54
  55 /*========================================================*/
  56 /* Private globals.                                       */
  57 /*========================================================*/
  58
  59 static guint signals[LAST_SIGNAL] = {0};
  60
  61
  62 /*========================================================*/
  63 /* Private function prototypes.                           */
  64 /*========================================================*/
  65
  66 static void gl_font_combo_finalize      (GObject             *object);
  67
  68 static gboolean
  69 button_press_event_cb (GtkWidget      *widget,
  70                        GdkEventButton *event,
  71                        glFontCombo    *this);
  72
  73 static void
  74 menu_font_changed_cb   (glFontComboMenu  *menu,
  75                         glFontCombo      *this);
  76
  77 static void
  78 menu_selection_done_cb (GtkMenuShell     *object,
  79                         glFontCombo      *this);
  80
  81
  82 /*****************************************************************************/
  83 /* Object infrastructure.                                                    */
  84 /*****************************************************************************/
  85 G_DEFINE_TYPE (glFontCombo, gl_font_combo, GTK_TYPE_TOGGLE_BUTTON);
  86
  87
  88 /*****************************************************************************/
  89 /* Class Init Function.                                                      */
  90 /*****************************************************************************/
  91 static void
  92 gl_font_combo_class_init (glFontComboClass *class)
  93 {
  94         GObjectClass      *gobject_class = (GObjectClass *) class;
  95
  96         gl_font_combo_parent_class = g_type_class_peek_parent (class);
  97
  98         gobject_class->finalize = gl_font_combo_finalize;
  99
 100         signals[CHANGED] =
 101                 g_signal_new ("changed",
 102                               G_OBJECT_CLASS_TYPE (gobject_class),
 103                               G_SIGNAL_RUN_LAST,
 104                               G_STRUCT_OFFSET (glFontComboClass, changed),
 105                               NULL, NULL,
 106                               gl_marshal_VOID__VOID,
 107                               G_TYPE_NONE, 0);
 108 }
 109
 110
 111 /*****************************************************************************/
 112 /* Object Instance Init Function.                                            */
 113 /*****************************************************************************/
 114 static void
 115 gl_font_combo_init (glFontCombo *this)
 116 {
 117         GtkWidget *hbox;
 118         GtkWidget *arrow;
 119
 120         this->priv = g_new0 (glFontComboPrivate, 1);
 121
 122         hbox = gtk_hbox_new (FALSE, 3);
 123         gtk_container_add (GTK_CONTAINER (this), hbox);
 124
 125         this->priv->label = gtk_label_new ("");
 126         gtk_misc_set_alignment (GTK_MISC (this->priv->label), 0.0, 0.5);
 127         gtk_widget_set_size_request (this->priv->label, 180, -1);
 128         gtk_box_pack_start (GTK_BOX (hbox), this->priv->label, TRUE, TRUE, 0);
 129
 130         arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_IN);
 131         gtk_box_pack_end (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
 132
 133         g_signal_connect (this, "button_press_event",
 134                           G_CALLBACK(button_press_event_cb), this);
 135 }
 136
 137
 138 /*****************************************************************************/
 139 /* Finalize Method.                                                          */
 140 /*****************************************************************************/
 141 static void
 142 gl_font_combo_finalize (GObject *object)
 143 {
 144         glFontCombo    *this;
 145
 146         g_return_if_fail (object && IS_GL_FONT_COMBO (object));
 147         this = GL_FONT_COMBO (object);
 148
 149         g_free (this->priv->font_family);
 150         g_object_ref_sink (this->priv->menu);
 151         g_free (this->priv);
 152
 153         G_OBJECT_CLASS (gl_font_combo_parent_class)->finalize (object);
 154 }
 155
 156
 157 /*****************************************************************************/
 158 /** New Object Generator.                                                    */
 159 /*****************************************************************************/
 160 GtkWidget *
 161 gl_font_combo_new (const gchar  *font_family)
 162 {
 163         glFontCombo  *this;
 164
 165         this = g_object_new (TYPE_GL_FONT_COMBO, NULL);
 166
 167         this->priv->font_family = gl_font_util_validate_family (font_family);
 168
 169         gtk_label_set_text (GTK_LABEL (this->priv->label), this->priv->font_family);
 170
 171         this->priv->menu = gl_font_combo_menu_new ();
 172
 173         gtk_widget_show_all (this->priv->menu);
 174
 175         g_signal_connect (this->priv->menu, "font_changed",
 176                           G_CALLBACK (menu_font_changed_cb), this);
 177         g_signal_connect (this->priv->menu, "selection_done",
 178                           G_CALLBACK (menu_selection_done_cb), this);
 179
 180         return GTK_WIDGET (this);
 181 }
 182
 183
 184 /*****************************************************************************/
 185 /** Set relief style.                                                        */
 186 /*****************************************************************************/
 187 void
 188 gl_font_combo_set_relief( glFontCombo    *this,
 189                           GtkReliefStyle  relief )
 190 {
 191         gtk_button_set_relief (GTK_BUTTON (this), relief);
 192 }
 193
 194
 195 /*****************************************************************************/
 196 /* Set font family.                                                          */
 197 /*****************************************************************************/
 198 void
 199 gl_font_combo_set_family (glFontCombo  *this,
 200                           const gchar  *font_family)
 201 {
 202
 203         this->priv->font_family = gl_font_util_validate_family (font_family);
 204
 205         gtk_label_set_text (GTK_LABEL (this->priv->label), this->priv->font_family);
 206 }
 207
 208
 209 /*****************************************************************************/
 210 /* Get font family.                                                          */
 211 /*****************************************************************************/
 212 gchar *
 213 gl_font_combo_get_family (glFontCombo  *this)
 214 {
 215         return g_strdup (this->priv->font_family);
 216 }
 217
 218
 219 /*****************************************************************************/
 220 /* Menu positioning function.                                                */
 221 /*****************************************************************************/
 222 static void
 223 menu_position_function (GtkMenu  *menu,
 224                         gint     *x,
 225                         gint     *y,
 226                         gboolean *push_in,
 227                         gpointer  user_data)
 228 {
 229         glFontCombo *this = GL_FONT_COMBO (user_data);
 230         gint          x1, y1;
 231         gint          menu_h, menu_w;
 232
 233         gdk_window_get_origin (GTK_WIDGET (this)->window, &x1, &y1);
 234         *x = x1 + GTK_WIDGET (this)->allocation.x;
 235         *y = y1 + GTK_WIDGET (this)->allocation.y +
 236                 GTK_WIDGET (this)->allocation.height;
 237
 238         menu_h = this->priv->menu->allocation.height;
 239         menu_w = this->priv->menu->allocation.width;
 240
 241         if ((*y + menu_h) > gdk_screen_height ())
 242         {
 243                 *y = y1 + GTK_WIDGET (this)->allocation.y - menu_h;
 244                 if ( *y < 0 )
 245                 {
 246                         *y = gdk_screen_height () - menu_h;
 247                 }
 248         }
 249
 250         if ((*x + menu_w) > gdk_screen_width ())
 251         {
 252                 *x = gdk_screen_width () - menu_w;
 253         }
 254
 255         *push_in = TRUE;
 256 }
 257
 258
 259 /*****************************************************************************/
 260 /* Button "button_press_event" callback.                                     */
 261 /*****************************************************************************/
 262 static gboolean
 263 button_press_event_cb (GtkWidget      *widget,
 264                        GdkEventButton *event,
 265                        glFontCombo   *this)
 266 {
 267         switch (event->button)
 268         {
 269
 270         case 1:
 271                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (this), TRUE);
 272
 273                 gtk_menu_popup (GTK_MENU (this->priv->menu),
 274                                 NULL, NULL,
 275                                 menu_position_function, this,
 276                                 event->button, event->time);
 277                 break;
 278
 279         default:
 280                 break;
 281
 282         }
 283
 284         return FALSE;
 285 }
 286
 287
 288 /*****************************************************************************/
 289 /* Menu "font changed" callback.                                             */
 290 /*****************************************************************************/
 291 static void
 292 menu_font_changed_cb (glFontComboMenu     *menu,
 293                       glFontCombo         *this)
 294 {
 295         this->priv->font_family = gl_font_combo_menu_get_family (menu);
 296
 297         gtk_label_set_text (GTK_LABEL (this->priv->label), this->priv->font_family);
 298
 299         g_signal_emit (this, signals[CHANGED], 0);
 300 }
 301
 302
 303 /*****************************************************************************/
 304 /* Menu "selection done" callback.                                           */
 305 /*****************************************************************************/
 306 static void
 307 menu_selection_done_cb (GtkMenuShell         *object,
 308                         glFontCombo         *this)
 309 {
 310         gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (this), FALSE);
 311 }
 312
 313
 314
 315 /*
 316  * Local Variables:       -- emacs
 317  * mode: C                -- emacs
 318  * c-basic-offset: 8      -- emacs
 319  * tab-width: 8           -- emacs
 320  * indent-tabs-mode: nil  -- emacs
 321  * End:                   -- emacs
 322  */