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

   1 /*
   2  *  color-combo.c
   3  *  Copyright (C) 2008-2009  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 "color-combo.h"
  24
  25 #include "color-combo-menu.h"
  26 #include <glib/gi18n.h>
  27 #include <gtk/gtkhbox.h>
  28 #include "color-swatch.h"
  29 #include <gtk/gtkarrow.h>
  30 #include "marshal.h"
  31 #include "color.h"
  32
  33
  34 #define IMAGE_W 24
  35 #define IMAGE_H 24
  36
  37
  38 /*========================================================*/
  39 /* Private types.                                         */
  40 /*========================================================*/
  41
  42 /** GL_COLOR_COMBO Private fields */
  43 struct _glColorComboPrivate {
  44
  45         guint       color;
  46         gboolean    is_default_flag;
  47
  48         guint       default_color;
  49
  50         GtkWidget  *swatch;
  51
  52         GtkWidget  *menu;
  53 };
  54
  55 enum {
  56         COLOR_CHANGED,
  57         LAST_SIGNAL
  58 };
  59
  60
  61 /*========================================================*/
  62 /* Private globals.                                       */
  63 /*========================================================*/
  64
  65 static guint signals[LAST_SIGNAL] = {0};
  66
  67
  68 /*========================================================*/
  69 /* Private function prototypes.                           */
  70 /*========================================================*/
  71
  72 static void gl_color_combo_finalize      (GObject             *object);
  73
  74 static gboolean
  75 button_press_event_cb (GtkWidget      *widget,
  76                        GdkEventButton *event,
  77                        glColorCombo   *this);
  78
  79 static void
  80 menu_color_changed_cb (glColorComboMenu   *object,
  81                        guint               color,
  82                        gboolean            is_default,
  83                        glColorCombo       *this);
  84
  85 static void
  86 menu_selection_done_cb (GtkMenuShell      *object,
  87                         glColorCombo      *this);
  88
  89
  90 /*****************************************************************************/
  91 /* Object infrastructure.                                                    */
  92 /*****************************************************************************/
  93 G_DEFINE_TYPE (glColorCombo, gl_color_combo, GTK_TYPE_TOGGLE_BUTTON);
  94
  95
  96 /*****************************************************************************/
  97 /* Class Init Function.                                                      */
  98 /*****************************************************************************/
  99 static void
 100 gl_color_combo_class_init (glColorComboClass *class)
 101 {
 102         GObjectClass       *gobject_class = (GObjectClass *) class;
 103
 104         gl_color_combo_parent_class = g_type_class_peek_parent (class);
 105
 106         gobject_class->finalize = gl_color_combo_finalize;
 107
 108         signals[COLOR_CHANGED] =
 109                 g_signal_new ("color_changed",
 110                               G_OBJECT_CLASS_TYPE (gobject_class),
 111                               G_SIGNAL_RUN_LAST,
 112                               G_STRUCT_OFFSET (glColorComboClass, color_changed),
 113                               NULL, NULL,
 114                               gl_marshal_VOID__UINT_BOOLEAN,
 115                               G_TYPE_NONE,
 116                               2, G_TYPE_POINTER, G_TYPE_BOOLEAN);
 117
 118 }
 119
 120
 121 /*****************************************************************************/
 122 /* Object Instance Init Function.                                            */
 123 /*****************************************************************************/
 124 static void
 125 gl_color_combo_init (glColorCombo *this)
 126 {
 127         GtkWidget *hbox;
 128         GtkWidget *arrow;
 129
 130         this->priv = g_new0 (glColorComboPrivate, 1);
 131
 132         hbox = gtk_hbox_new (FALSE, 3);
 133         gtk_container_add (GTK_CONTAINER (this), hbox);
 134
 135         this->priv->swatch = gl_color_swatch_new (IMAGE_W, IMAGE_H, GL_COLOR_NONE);
 136         gtk_box_pack_start (GTK_BOX (hbox), this->priv->swatch, TRUE, TRUE, 0);
 137
 138         arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_IN);
 139         gtk_box_pack_end (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
 140
 141         g_signal_connect (this, "button_press_event",
 142                           G_CALLBACK(button_press_event_cb), this);
 143 }
 144
 145
 146 /*****************************************************************************/
 147 /* Finalize Method.                                                          */
 148 /*****************************************************************************/
 149 static void
 150 gl_color_combo_finalize (GObject *object)
 151 {
 152         glColorCombo    *this;
 153
 154         g_return_if_fail (object && IS_GL_COLOR_COMBO (object));
 155         this = GL_COLOR_COMBO (object);
 156
 157         g_object_ref_sink (this->priv->menu);
 158         g_free (this->priv);
 159
 160         G_OBJECT_CLASS (gl_color_combo_parent_class)->finalize (object);
 161 }
 162
 163
 164 /*****************************************************************************/
 165 /** New Object Generator.                                                    */
 166 /*****************************************************************************/
 167 GtkWidget *
 168 gl_color_combo_new (const gchar  *default_label,
 169                     guint         default_color,
 170                     guint         color)
 171 {
 172         glColorCombo *this;
 173
 174         this = g_object_new (TYPE_GL_COLOR_COMBO, NULL);
 175
 176         if (!default_label)
 177         {
 178                 default_label = _("Default Color");
 179         }
 180
 181         this->priv->default_color = default_color;
 182         this->priv->color = color;
 183
 184         gl_color_swatch_set_color (GL_COLOR_SWATCH (this->priv->swatch), color);
 185
 186         this->priv->menu = gl_color_combo_menu_new (default_label,
 187                                                     color);
 188         gtk_widget_show_all (this->priv->menu);
 189
 190         g_signal_connect (this->priv->menu, "color_changed",
 191                           G_CALLBACK (menu_color_changed_cb), this);
 192         g_signal_connect (this->priv->menu, "selection_done",
 193                           G_CALLBACK (menu_selection_done_cb), this);
 194
 195         return GTK_WIDGET (this);
 196 }
 197
 198
 199 /*****************************************************************************/
 200 /* Set color.                                                                */
 201 /*****************************************************************************/
 202 void
 203 gl_color_combo_set_color (glColorCombo  *this,
 204                           guint          color)
 205 {
 206         this->priv->color = color;
 207
 208         gl_color_swatch_set_color (GL_COLOR_SWATCH (this->priv->swatch), color);
 209 }
 210
 211
 212 /*****************************************************************************/
 213 /* Set to default color.                                                     */
 214 /*****************************************************************************/
 215 void
 216 gl_color_combo_set_to_default (glColorCombo  *this)
 217 {
 218         gl_color_combo_set_color (this, this->priv->default_color);
 219 }
 220
 221 /*****************************************************************************/
 222 /* Get color.                                                                */
 223 /*****************************************************************************/
 224 guint
 225 gl_color_combo_get_color (glColorCombo  *this,
 226                           gboolean      *is_default)
 227 {
 228         if (is_default)
 229         {
 230                 *is_default = this->priv->is_default_flag;
 231         }
 232
 233         return this->priv->color;
 234 }
 235
 236
 237 /*****************************************************************************/
 238 /* Menu positioning function.                                                */
 239 /*****************************************************************************/
 240 static void
 241 menu_position_function (GtkMenu  *menu,
 242                         gint     *x,
 243                         gint     *y,
 244                         gboolean *push_in,
 245                         gpointer  user_data)
 246 {
 247         glColorCombo *this = GL_COLOR_COMBO (user_data);
 248         gint          x1, y1;
 249         gint          menu_h, menu_w;
 250
 251         gdk_window_get_origin (GTK_WIDGET (this)->window, &x1, &y1);
 252         *x = x1 + GTK_WIDGET (this)->allocation.x;
 253         *y = y1 + GTK_WIDGET (this)->allocation.y +
 254                 GTK_WIDGET (this)->allocation.height;
 255
 256         menu_h = this->priv->menu->allocation.height;
 257         menu_w = this->priv->menu->allocation.width;
 258
 259         if ((*y + menu_h) > gdk_screen_height ())
 260         {
 261                 *y = y1 + GTK_WIDGET (this)->allocation.y - menu_h;
 262                 if ( *y < 0 )
 263                 {
 264                         *y = gdk_screen_height () - menu_h;
 265                 }
 266         }
 267
 268         if ((*x + menu_w) > gdk_screen_width ())
 269         {
 270                 *x = gdk_screen_width () - menu_w;
 271         }
 272
 273         *push_in = TRUE;
 274 }
 275
 276
 277 /*****************************************************************************/
 278 /* Button "button_press_event" callback.                                     */
 279 /*****************************************************************************/
 280 static gboolean
 281 button_press_event_cb (GtkWidget      *widget,
 282                        GdkEventButton *event,
 283                        glColorCombo   *this)
 284 {
 285         switch (event->button)
 286         {
 287
 288         case 1:
 289                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (this), TRUE);
 290
 291                 gtk_menu_popup (GTK_MENU (this->priv->menu),
 292                                 NULL, NULL,
 293                                 menu_position_function, this,
 294                                 event->button, event->time);
 295                 break;
 296
 297         default:
 298                 break;
 299
 300         }
 301
 302         return FALSE;
 303 }
 304
 305
 306 /*****************************************************************************/
 307 /* Menu "color changed" callback.                                            */
 308 /*****************************************************************************/
 309 static void
 310 menu_color_changed_cb (glColorComboMenu     *object,
 311                        guint                 color,
 312                        gboolean              is_default,
 313                        glColorCombo         *this)
 314 {
 315         if (is_default)
 316         {
 317                 this->priv->color = this->priv->default_color;
 318         }
 319         else
 320         {
 321                 this->priv->color = color;
 322         }
 323         this->priv->is_default_flag = is_default;
 324
 325         gl_color_swatch_set_color (GL_COLOR_SWATCH (this->priv->swatch),
 326                                    this->priv->color);
 327
 328         g_signal_emit (this, signals[COLOR_CHANGED], 0,
 329                        this->priv->color,
 330                        this->priv->is_default_flag);
 331 }
 332
 333
 334 /*****************************************************************************/
 335 /* Menu "color changed" callback.                                            */
 336 /*****************************************************************************/
 337 static void
 338 menu_selection_done_cb (GtkMenuShell         *object,
 339                         glColorCombo         *this)
 340 {
 341         gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (this), FALSE);
 342 }
 343
 344
 345
 346 /*
 347  * Local Variables:       -- emacs
 348  * mode: C                -- emacs
 349  * c-basic-offset: 8      -- emacs
 350  * tab-width: 8           -- emacs
 351  * indent-tabs-mode: nil  -- emacs
 352  * End:                   -- emacs
 353  */