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 <glib/gi18n.h>
  27 #include <gtk/gtkhbox.h>
  28 #include <gtk/gtklabel.h>
  29 #include <gtk/gtkarrow.h>
  30 #include "marshal.h"
  31
  32
  33
  34 /*========================================================*/
  35 /* Private types.                                         */
  36 /*========================================================*/
  37
  38 /** GL_FONT_COMBO Private fields */
  39 struct _glFontComboPrivate {
  40
  41         gchar      *font_family;
  42
  43         GtkWidget  *label;
  44
  45         GtkWidget  *menu;
  46 };
  47
  48 enum {
  49         CHANGED,
  50         LAST_SIGNAL
  51 };
  52
  53
  54 /*========================================================*/
  55 /* Private globals.                                       */
  56 /*========================================================*/
  57
  58 static guint signals[LAST_SIGNAL] = {0};
  59
  60
  61 /*========================================================*/
  62 /* Private function prototypes.                           */
  63 /*========================================================*/
  64
  65 static void gl_font_combo_finalize      (GObject             *object);
  66
  67 static gboolean
  68 button_press_event_cb (GtkWidget      *widget,
  69                        GdkEventButton *event,
  70                        glFontCombo    *this);
  71
  72 static void
  73 menu_font_changed_cb   (glFontComboMenu  *menu,
  74                         glFontCombo      *this);
  75
  76 static void
  77 menu_selection_done_cb (GtkMenuShell     *object,
  78                         glFontCombo      *this);
  79
  80
  81 /*****************************************************************************/
  82 /* Object infrastructure.                                                    */
  83 /*****************************************************************************/
  84 G_DEFINE_TYPE (glFontCombo, gl_font_combo, GTK_TYPE_TOGGLE_BUTTON);
  85
  86
  87 /*****************************************************************************/
  88 /* Class Init Function.                                                      */
  89 /*****************************************************************************/
  90 static void
  91 gl_font_combo_class_init (glFontComboClass *class)
  92 {
  93         GObjectClass      *gobject_class = (GObjectClass *) class;
  94         GtkWidgetClass    *widget_class  = (GtkWidgetClass *) class;
  95         glFontComboClass  *object_class  = (glFontComboClass *) class;
  96
  97         gl_font_combo_parent_class = g_type_class_peek_parent (class);
  98
  99         gobject_class->finalize = gl_font_combo_finalize;
 100
 101         signals[CHANGED] =
 102                 g_signal_new ("changed",
 103                               G_OBJECT_CLASS_TYPE (gobject_class),
 104                               G_SIGNAL_RUN_LAST,
 105                               G_STRUCT_OFFSET (glFontComboClass, changed),
 106                               NULL, NULL,
 107                               gl_marshal_VOID__VOID,
 108                               G_TYPE_NONE, 0);
 109 }
 110
 111
 112 /*****************************************************************************/
 113 /* Object Instance Init Function.                                            */
 114 /*****************************************************************************/
 115 static void
 116 gl_font_combo_init (glFontCombo *this)
 117 {
 118         GtkWidget *hbox;
 119         GtkWidget *arrow;
 120
 121         this->priv = g_new0 (glFontComboPrivate, 1);
 122
 123         hbox = gtk_hbox_new (FALSE, 3);
 124         gtk_container_add (GTK_CONTAINER (this), hbox);
 125
 126         this->priv->label = gtk_label_new ("");
 127         gtk_misc_set_alignment (GTK_MISC (this->priv->label), 0.0, 0.5);
 128         gtk_widget_set_size_request (this->priv->label, 180, -1);
 129         gtk_box_pack_start (GTK_BOX (hbox), this->priv->label, TRUE, TRUE, 0);
 130
 131         arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_IN);
 132         gtk_box_pack_end (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
 133
 134         g_signal_connect (this, "button_press_event",
 135                           G_CALLBACK(button_press_event_cb), this);
 136 }
 137
 138
 139 /*****************************************************************************/
 140 /* Finalize Method.                                                          */
 141 /*****************************************************************************/
 142 static void
 143 gl_font_combo_finalize (GObject *object)
 144 {
 145         glFontCombo    *this;
 146
 147         g_return_if_fail (object && IS_GL_FONT_COMBO (object));
 148         this = GL_FONT_COMBO (object);
 149
 150         g_free (this->priv->font_family);
 151         g_object_ref_sink (this->priv->menu);
 152         g_free (this->priv);
 153
 154         G_OBJECT_CLASS (gl_font_combo_parent_class)->finalize (object);
 155 }
 156
 157
 158 /*****************************************************************************/
 159 /** New Object Generator.                                                    */
 160 /*****************************************************************************/
 161 GtkWidget *
 162 gl_font_combo_new (const gchar  *font_family)
 163 {
 164         glFontCombo  *this;
 165
 166         this = g_object_new (TYPE_GL_FONT_COMBO, NULL);
 167
 168         this->priv->font_family = g_strdup (font_family);
 169
 170         gtk_label_set_text (GTK_LABEL (this->priv->label), font_family);
 171
 172         this->priv->menu = gl_font_combo_menu_new ();
 173
 174         gtk_widget_show_all (this->priv->menu);
 175
 176         g_signal_connect (this->priv->menu, "font_changed",
 177                           G_CALLBACK (menu_font_changed_cb), this);
 178         g_signal_connect (this->priv->menu, "selection_done",
 179                           G_CALLBACK (menu_selection_done_cb), this);
 180
 181         return GTK_WIDGET (this);
 182 }
 183
 184
 185 /*****************************************************************************/
 186 /** Set relief style.                                                        */
 187 /*****************************************************************************/
 188 void
 189 gl_font_combo_set_relief( glFontCombo    *this,
 190                           GtkReliefStyle  relief )
 191 {
 192         gtk_button_set_relief (GTK_BUTTON (this), relief);
 193 }
 194
 195
 196 /*****************************************************************************/
 197 /* Set font family.                                                          */
 198 /*****************************************************************************/
 199 void
 200 gl_font_combo_set_family (glFontCombo  *this,
 201                           const gchar  *font_family)
 202 {
 203
 204         this->priv->font_family = g_strdup (font_family);
 205
 206         gtk_label_set_text (GTK_LABEL (this->priv->label), font_family);
 207 }
 208
 209
 210 /*****************************************************************************/
 211 /* Get font family.                                                          */
 212 /*****************************************************************************/
 213 gchar *
 214 gl_font_combo_get_family (glFontCombo  *this)
 215 {
 216         return g_strdup (this->priv->font_family);
 217 }
 218
 219
 220 /*****************************************************************************/
 221 /* Menu positioning function.                                                */
 222 /*****************************************************************************/
 223 static void
 224 menu_position_function (GtkMenu  *menu,
 225                         gint     *x,
 226                         gint     *y,
 227                         gboolean *push_in,
 228                         gpointer  user_data)
 229 {
 230         glFontCombo *this = GL_FONT_COMBO (user_data);
 231         gint          x1, y1;
 232         gint          menu_h, menu_w;
 233
 234         gdk_window_get_origin (GTK_WIDGET (this)->window, &x1, &y1);
 235         *x = x1 + GTK_WIDGET (this)->allocation.x;
 236         *y = y1 + GTK_WIDGET (this)->allocation.y +
 237                 GTK_WIDGET (this)->allocation.height;
 238
 239         menu_h = this->priv->menu->allocation.height;
 240         menu_w = this->priv->menu->allocation.width;
 241
 242         if ((*y + menu_h) > gdk_screen_height ())
 243         {
 244                 *y = y1 + GTK_WIDGET (this)->allocation.y - menu_h;
 245                 if ( *y < 0 )
 246                 {
 247                         *y = gdk_screen_height () - menu_h;
 248                 }
 249         }
 250
 251         if ((*x + menu_w) > gdk_screen_width ())
 252         {
 253                 *x = gdk_screen_width () - menu_w;
 254         }
 255
 256         *push_in = TRUE;
 257 }
 258
 259
 260 /*****************************************************************************/
 261 /* Button "button_press_event" callback.                                     */
 262 /*****************************************************************************/
 263 static gboolean
 264 button_press_event_cb (GtkWidget      *widget,
 265                        GdkEventButton *event,
 266                        glFontCombo   *this)
 267 {
 268         switch (event->button)
 269         {
 270
 271         case 1:
 272                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (this), TRUE);
 273
 274                 gtk_menu_popup (GTK_MENU (this->priv->menu),
 275                                 NULL, NULL,
 276                                 menu_position_function, this,
 277                                 event->button, event->time);
 278                 break;
 279
 280         default:
 281                 break;
 282
 283         }
 284
 285         return FALSE;
 286 }
 287
 288
 289 /*****************************************************************************/
 290 /* Menu "font changed" callback.                                             */
 291 /*****************************************************************************/
 292 static void
 293 menu_font_changed_cb (glFontComboMenu     *menu,
 294                       glFontCombo         *this)
 295 {
 296         this->priv->font_family = gl_font_combo_menu_get_family (menu);
 297
 298         gtk_label_set_text (GTK_LABEL (this->priv->label), this->priv->font_family);
 299
 300         g_signal_emit (this, signals[CHANGED], 0);
 301 }
 302
 303
 304 /*****************************************************************************/
 305 /* Menu "selection done" callback.                                           */
 306 /*****************************************************************************/
 307 static void
 308 menu_selection_done_cb (GtkMenuShell         *object,
 309                         glFontCombo         *this)
 310 {
 311         gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (this), FALSE);
 312 }
 313
 314
 315
 316 /*
 317  * Local Variables:       -- emacs
 318  * mode: C                -- emacs
 319  * c-basic-offset: 8      -- emacs
 320  * tab-width: 8           -- emacs
 321  * indent-tabs-mode: nil  -- emacs
 322  * End:                   -- emacs
 323  */