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

   1 /*
   2  *  color-combo-button.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-button.h"
  24
  25 #include <glib/gi18n.h>
  26 #include <gtk/gtk.h>
  27
  28 #include "color-combo-menu.h"
  29 #include "color-swatch.h"
  30 #include "color.h"
  31 #include "marshal.h"
  32
  33 #define IMAGE_W 24
  34 #define IMAGE_H 24
  35
  36 #define SWATCH_H 5
  37
  38
  39 /*========================================================*/
  40 /* Private types.                                         */
  41 /*========================================================*/
  42
  43 /** GL_COLOR_COMBO_BUTTON Private fields */
  44 struct _glColorComboButtonPrivate {
  45
  46         guint       color;
  47         gboolean    is_default_flag;
  48
  49         guint       default_color;
  50
  51         GtkWidget  *button;
  52         GtkWidget  *button_vbox;
  53         GtkWidget  *swatch;
  54         GtkWidget  *dropdown_button;
  55
  56         GtkWidget  *menu;
  57 };
  58
  59 enum {
  60         COLOR_CHANGED,
  61         LAST_SIGNAL
  62 };
  63
  64
  65 /*========================================================*/
  66 /* Private globals.                                       */
  67 /*========================================================*/
  68
  69 static guint signals[LAST_SIGNAL] = {0};
  70
  71
  72 /*========================================================*/
  73 /* Private function prototypes.                           */
  74 /*========================================================*/
  75
  76 static void
  77 gl_color_combo_button_finalize (GObject *object);
  78
  79 static void
  80 button_clicked_cb (glColorComboButton *this);
  81
  82 static gboolean
  83 dropdown_button_press_event_cb (GtkWidget          *widget,
  84                                 GdkEventButton     *event,
  85                                 glColorComboButton *this);
  86
  87 static void
  88 menu_color_changed_cb (glColorComboMenu            *object,
  89                        guint                        color,
  90                        gboolean                     is_default,
  91                        glColorComboButton          *this);
  92
  93 static void
  94 menu_selection_done_cb (GtkMenuShell               *object,
  95                         glColorComboButton         *this);
  96
  97
  98 /*****************************************************************************/
  99 /* Object infrastructure.                                                    */
 100 /*****************************************************************************/
 101 G_DEFINE_TYPE (glColorComboButton, gl_color_combo_button, GTK_TYPE_HBOX);
 102
 103
 104 /*****************************************************************************/
 105 /* Class Init Function.                                                      */
 106 /*****************************************************************************/
 107 static void
 108 gl_color_combo_button_class_init (glColorComboButtonClass *class)
 109 {
 110         GObjectClass            *gobject_class = (GObjectClass *) class;
 111
 112         gl_color_combo_button_parent_class = g_type_class_peek_parent (class);
 113
 114         gobject_class->finalize = gl_color_combo_button_finalize;
 115
 116         signals[COLOR_CHANGED] =
 117                 g_signal_new ("color_changed",
 118                               G_OBJECT_CLASS_TYPE (gobject_class),
 119                               G_SIGNAL_RUN_LAST,
 120                               G_STRUCT_OFFSET (glColorComboButtonClass, color_changed),
 121                               NULL, NULL,
 122                               gl_marshal_VOID__UINT_BOOLEAN,
 123                               G_TYPE_NONE,
 124                               2, G_TYPE_POINTER, G_TYPE_BOOLEAN);
 125
 126 }
 127
 128
 129 /*****************************************************************************/
 130 /* Object Instance Init Function.                                            */
 131 /*****************************************************************************/
 132 static void
 133 gl_color_combo_button_init (glColorComboButton *this)
 134 {
 135         GtkWidget *arrow;
 136
 137         gtk_box_set_spacing (GTK_BOX (this), 0);
 138
 139         this->priv = g_new0 (glColorComboButtonPrivate, 1);
 140
 141         this->priv->button_vbox = gtk_vbox_new (FALSE, 0);
 142
 143         this->priv->button = gtk_toggle_button_new ();
 144         gtk_container_add (GTK_CONTAINER (this->priv->button), this->priv->button_vbox);
 145         gtk_button_set_focus_on_click (GTK_BUTTON (this->priv->button), FALSE);
 146         g_signal_connect_swapped (this->priv->button, "clicked",
 147                           G_CALLBACK(button_clicked_cb), this);
 148
 149         gtk_box_pack_start (GTK_BOX (this), this->priv->button, FALSE, FALSE, 0);
 150
 151         this->priv->dropdown_button = gtk_toggle_button_new ();
 152         arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_IN);
 153         gtk_container_add (GTK_CONTAINER (this->priv->dropdown_button), arrow);
 154         gtk_button_set_relief (GTK_BUTTON (this->priv->dropdown_button), GTK_RELIEF_NONE);
 155         gtk_button_set_focus_on_click (GTK_BUTTON (this->priv->dropdown_button), FALSE);
 156         g_signal_connect (this->priv->dropdown_button, "button_press_event",
 157                           G_CALLBACK(dropdown_button_press_event_cb), this);
 158
 159         gtk_box_pack_start (GTK_BOX (this), this->priv->dropdown_button, FALSE, FALSE, 0);
 160 }
 161
 162
 163 /*****************************************************************************/
 164 /* Finalize Method.                                                          */
 165 /*****************************************************************************/
 166 static void
 167 gl_color_combo_button_finalize (GObject *object)
 168 {
 169         glColorComboButton    *this;
 170
 171         g_return_if_fail (object && IS_GL_COLOR_COMBO_BUTTON (object));
 172         this = GL_COLOR_COMBO_BUTTON (object);
 173
 174         g_object_ref_sink (this->priv->menu);
 175         g_free (this->priv);
 176
 177         G_OBJECT_CLASS (gl_color_combo_button_parent_class)->finalize (object);
 178 }
 179
 180
 181 /*****************************************************************************/
 182 /** New Object Generator.                                                    */
 183 /*****************************************************************************/
 184 GtkWidget *
 185 gl_color_combo_button_new (GdkPixbuf    *icon,
 186                            const gchar  *default_label,
 187                            guint         default_color,
 188                            guint         color)
 189 {
 190         glColorComboButton *this;
 191         GdkPixbuf          *pixbuf;
 192         GtkWidget          *wimage;
 193
 194         this = g_object_new (TYPE_GL_COLOR_COMBO_BUTTON, NULL);
 195
 196         if (!default_label)
 197         {
 198                 default_label = _("Default Color");
 199         }
 200
 201         this->priv->default_color = default_color;
 202         this->priv->color = color;
 203
 204         if (icon)
 205         {
 206                 pixbuf = gdk_pixbuf_new_subpixbuf (icon, 0, 0, IMAGE_W, IMAGE_H-SWATCH_H);
 207                 wimage = gtk_image_new_from_pixbuf (pixbuf);
 208                 g_object_unref (G_OBJECT (pixbuf));
 209                 gtk_box_pack_start (GTK_BOX (this->priv->button_vbox), wimage, FALSE, FALSE, 0);
 210
 211                 this->priv->swatch = gl_color_swatch_new (IMAGE_W, SWATCH_H, color);
 212         }
 213         else
 214         {
 215                 this->priv->swatch = gl_color_swatch_new (IMAGE_W, IMAGE_H, color);
 216         }
 217         gtk_box_pack_start (GTK_BOX (this->priv->button_vbox), this->priv->swatch, FALSE, FALSE, 0);
 218
 219         this->priv->menu = gl_color_combo_menu_new (default_label, color);
 220         gtk_widget_show_all (this->priv->menu);
 221
 222         g_signal_connect (this->priv->menu, "color_changed",
 223                           G_CALLBACK (menu_color_changed_cb), this);
 224         g_signal_connect (this->priv->menu, "selection_done",
 225                           G_CALLBACK (menu_selection_done_cb), this);
 226
 227         return GTK_WIDGET (this);
 228 }
 229
 230
 231 /*****************************************************************************/
 232 /* Set color.                                                                */
 233 /*****************************************************************************/
 234 void
 235 gl_color_combo_button_set_color (glColorComboButton  *this,
 236                                  guint                color)
 237 {
 238         this->priv->color = color;
 239
 240         gl_color_swatch_set_color (GL_COLOR_SWATCH (this->priv->swatch), color);
 241 }
 242
 243
 244 /*****************************************************************************/
 245 /* Set to default color.                                                     */
 246 /*****************************************************************************/
 247 void
 248 gl_color_combo_button_set_to_default (glColorComboButton  *this)
 249 {
 250         gl_color_combo_button_set_color (this, this->priv->default_color);
 251 }
 252
 253 /*****************************************************************************/
 254 /* Get color.                                                                */
 255 /*****************************************************************************/
 256 guint
 257 gl_color_combo_button_get_color (glColorComboButton  *this,
 258                                  gboolean            *is_default)
 259 {
 260         if (is_default)
 261         {
 262                 *is_default = this->priv->is_default_flag;
 263         }
 264
 265         return this->priv->color;
 266 }
 267
 268
 269 /*****************************************************************************/
 270 /** Set relief style.                                                        */
 271 /*****************************************************************************/
 272 void
 273 gl_color_combo_button_set_relief( glColorComboButton  *this,
 274                                   GtkReliefStyle       relief )
 275 {
 276         gtk_button_set_relief (GTK_BUTTON (this->priv->button), relief);
 277 }
 278
 279
 280 /*****************************************************************************/
 281 /* Color button "clicked" callback.                                          */
 282 /*****************************************************************************/
 283 static void
 284 button_clicked_cb( glColorComboButton *this )
 285 {
 286         gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (this->priv->button),
 287                                       FALSE);
 288
 289         g_signal_emit (this, signals[COLOR_CHANGED], 0,
 290                        this->priv->color,
 291                        this->priv->is_default_flag);
 292 }
 293
 294
 295 /*****************************************************************************/
 296 /* Menu positioning function.                                                */
 297 /*****************************************************************************/
 298 static void
 299 menu_position_function (GtkMenu            *menu,
 300                         gint               *x,
 301                         gint               *y,
 302                         gboolean           *push_in,
 303                         glColorComboButton *this)
 304 {
 305         GdkScreen          *screen;
 306         gint                w_screen, h_screen;
 307         GdkWindow          *window;
 308         gint                x_window, y_window;
 309         GtkAllocation       allocation;
 310         gint                x_this, y_this, h_this;
 311         GtkRequisition      menu_requisition;
 312         gint                h_menu, w_menu;
 313
 314         /*
 315          * Screen size
 316          */
 317         screen = gtk_widget_get_screen (GTK_WIDGET (this));
 318         w_screen = gdk_screen_get_width (screen);
 319         h_screen = gdk_screen_get_height (screen);
 320
 321         /*
 322          * Absolute position of "this" window on screen.
 323          */
 324         window = gtk_widget_get_window (GTK_WIDGET (this));
 325         gdk_window_get_origin (window, &x_window, &y_window);
 326
 327         /*
 328          *  Position and size of "this" inside window
 329          */
 330         gtk_widget_get_allocation (GTK_WIDGET (this), &allocation);
 331         x_this = allocation.x;
 332         y_this = allocation.y;
 333         h_this = allocation.height;
 334
 335         /*
 336          * Size of menu.
 337          */
 338         gtk_widget_size_request (this->priv->menu, &menu_requisition);
 339         h_menu = menu_requisition.height;
 340         w_menu = menu_requisition.width;
 341
 342         /*
 343          * Default position anchored to lower left corner of "this".
 344          */
 345         *x = x_window + x_this;
 346         *y = y_window + y_this + h_this;
 347
 348         /*
 349          * Adjust vertical position if menu if extends past bottom of screen.
 350          */
 351         if ( (*y + h_menu) > h_screen )
 352         {
 353                 *y = y_window + y_this - h_menu;
 354
 355                 if ( *y < 0 )
 356                 {
 357                         *y = h_screen - h_menu;
 358                 }
 359         }
 360
 361         /*
 362          * Adjust horizontal position if menu if extends past edge of screen.
 363          */
 364         if ( (*x + w_menu) > w_screen )
 365         {
 366                 *x = w_screen - w_menu;
 367         }
 368
 369
 370         *push_in = TRUE;
 371 }
 372
 373
 374 /*****************************************************************************/
 375 /* Dropdown button "button_press_event" callback.                            */
 376 /*****************************************************************************/
 377 static gboolean
 378 dropdown_button_press_event_cb (GtkWidget          *widget,
 379                                 GdkEventButton     *event,
 380                                 glColorComboButton *this)
 381 {
 382         switch (event->button)
 383         {
 384
 385         case 1:
 386                 g_signal_handlers_block_by_func (G_OBJECT (this->priv->button),
 387                                                  button_clicked_cb, this);
 388                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (this->priv->button),
 389                                               TRUE);
 390                 g_signal_handlers_unblock_by_func (G_OBJECT (this->priv->button),
 391                                                    button_clicked_cb, this);
 392                 gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (this->priv->dropdown_button),
 393                                               TRUE);
 394
 395                 gtk_menu_popup (GTK_MENU (this->priv->menu),
 396                                 NULL, NULL,
 397                                 (GtkMenuPositionFunc)menu_position_function, this,
 398                                 event->button, event->time);
 399                 break;
 400
 401         default:
 402                 break;
 403
 404         }
 405
 406         return FALSE;
 407 }
 408
 409
 410 /*****************************************************************************/
 411 /* Menu "color changed" callback.                                            */
 412 /*****************************************************************************/
 413 static void
 414 menu_color_changed_cb (glColorComboMenu   *object,
 415                        guint               color,
 416                        gboolean            is_default,
 417                        glColorComboButton *this)
 418 {
 419         if (is_default)
 420         {
 421                 this->priv->color = this->priv->default_color;
 422         }
 423         else
 424         {
 425                 this->priv->color = color;
 426         }
 427         this->priv->is_default_flag = is_default;
 428
 429         gl_color_swatch_set_color (GL_COLOR_SWATCH (this->priv->swatch),
 430                                    this->priv->color);
 431
 432         g_signal_emit (this, signals[COLOR_CHANGED], 0,
 433                        this->priv->color,
 434                        this->priv->is_default_flag);
 435 }
 436
 437
 438 /*****************************************************************************/
 439 /* Menu "color changed" callback.                                            */
 440 /*****************************************************************************/
 441 static void
 442 menu_selection_done_cb (GtkMenuShell       *object,
 443                         glColorComboButton *this)
 444 {
 445         g_signal_handlers_block_by_func (G_OBJECT (this->priv->button),
 446                                          button_clicked_cb, this);
 447         gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (this->priv->button),
 448                                       FALSE);
 449         g_signal_handlers_unblock_by_func (G_OBJECT (this->priv->button),
 450                                            button_clicked_cb, this);
 451
 452         gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (this->priv->dropdown_button),
 453                                       FALSE);
 454 }
 455
 456
 457
 458 /*
 459  * Local Variables:       -- emacs
 460  * mode: C                -- emacs
 461  * c-basic-offset: 8      -- emacs
 462  * tab-width: 8           -- emacs
 463  * indent-tabs-mode: nil  -- emacs
 464  * End:                   -- emacs
 465  */