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

   1 /*
   2  *  color-combo-color-menu-item.c
   3  *  Copyright (C) 2008  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-color-menu-item.h"
  24
  25 #include "marshal.h"
  26 #include <glib/gi18n.h>
  27 #include <gtk/gtkmenuitem.h>
  28 #include <gtk/gtkseparatormenuitem.h>
  29 #include <gtk/gtklabel.h>
  30 #include <gtk/gtkimage.h>
  31 #include "color.h"
  32
  33
  34 /*===========================================*/
  35 /* Private macros and constants.             */
  36 /*===========================================*/
  37
  38
  39 /*===========================================*/
  40 /* Private types                             */
  41 /*===========================================*/
  42
  43 struct _glColorComboColorMenuItemPrivate {
  44
  45         gint id;
  46 };
  47
  48
  49 /*===========================================*/
  50 /* Private globals                           */
  51 /*===========================================*/
  52
  53
  54 /*===========================================*/
  55 /* Local function prototypes                 */
  56 /*===========================================*/
  57
  58 static void gl_color_combo_color_menu_item_finalize    (GObject                *object);
  59
  60 static GdkPixbuf *
  61 create_color_pixbuf (gdouble         w,
  62                      gdouble         h,
  63                      guint           color);
  64
  65 /****************************************************************************/
  66 /* Boilerplate Object stuff.                                                */
  67 /****************************************************************************/
  68 G_DEFINE_TYPE (glColorComboColorMenuItem, gl_color_combo_color_menu_item, GTK_TYPE_MENU_ITEM);
  69
  70
  71 /*****************************************************************************/
  72 /* Class Init Function.                                                      */
  73 /*****************************************************************************/
  74 static void
  75 gl_color_combo_color_menu_item_class_init (glColorComboColorMenuItemClass *class)
  76 {
  77         GObjectClass   *gobject_class = G_OBJECT_CLASS (class);
  78         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
  79
  80         gl_color_combo_color_menu_item_parent_class = g_type_class_peek_parent (class);
  81
  82         gobject_class->finalize = gl_color_combo_color_menu_item_finalize;
  83 }
  84
  85
  86 /*****************************************************************************/
  87 /* Object Instance Init Function.                                            */
  88 /*****************************************************************************/
  89 static void
  90 gl_color_combo_color_menu_item_init (glColorComboColorMenuItem *this)
  91 {
  92         this->priv = g_new0 (glColorComboColorMenuItemPrivate, 1);
  93 }
  94
  95
  96 /*****************************************************************************/
  97 /* Finalize Method.                                                          */
  98 /*****************************************************************************/
  99 static void
 100 gl_color_combo_color_menu_item_finalize (GObject *object)
 101 {
 102         glColorComboColorMenuItem *this = GL_COLOR_COMBO_COLOR_MENU_ITEM (object);
 103
 104         g_return_if_fail (object != NULL);
 105         g_return_if_fail (GL_IS_COLOR_COMBO_COLOR_MENU_ITEM (object));
 106
 107         g_free (this->priv);
 108
 109         G_OBJECT_CLASS (gl_color_combo_color_menu_item_parent_class)->finalize (object);
 110 }
 111
 112
 113 /*****************************************************************************/
 114 /** New Object Generator.                                                    */
 115 /*****************************************************************************/
 116 GtkWidget *
 117 gl_color_combo_color_menu_item_new (gint         id,
 118                                     guint        color,
 119                                     const gchar *tip)
 120 {
 121         glColorComboColorMenuItem *this;
 122         GdkPixbuf                 *pixbuf;
 123
 124         this = g_object_new (GL_TYPE_COLOR_COMBO_COLOR_MENU_ITEM, NULL);
 125
 126         this->priv->id = id;
 127
 128         pixbuf = create_color_pixbuf (16, 16, color);
 129         gtk_container_add (GTK_CONTAINER (this),
 130                            gtk_image_new_from_pixbuf (pixbuf));
 131
 132         gtk_widget_set_tooltip_text (GTK_WIDGET (this), tip);
 133
 134         return GTK_WIDGET (this);
 135 }
 136
 137
 138 /*****************************************************************************/
 139 /* Set color.                                                                */
 140 /*****************************************************************************/
 141 void
 142 gl_color_combo_color_menu_item_set_color(glColorComboColorMenuItem *this,
 143                                          gint                       id,
 144                                          guint                      color,
 145                                          const gchar               *tip)
 146 {
 147         GdkPixbuf                 *pixbuf;
 148
 149         this->priv->id = id;
 150
 151         pixbuf = create_color_pixbuf (16, 16, color);
 152         gtk_image_set_from_pixbuf (GTK_IMAGE (gtk_bin_get_child (GTK_BIN (this))),
 153                                    pixbuf);
 154
 155         gtk_widget_set_tooltip_text (GTK_WIDGET (this), tip);
 156  }
 157
 158
 159 /*****************************************************************************/
 160 /* Create new pixbuf with color preview.                                     */
 161 /*****************************************************************************/
 162 static GdkPixbuf *
 163 create_color_pixbuf (gdouble         w,
 164                      gdouble         h,
 165                      guint           color)
 166 {
 167         cairo_surface_t   *surface;
 168         cairo_t           *cr;
 169         GdkPixbuf         *pixbuf;
 170
 171         surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h);
 172
 173         cr = cairo_create (surface);
 174
 175         cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
 176
 177         cairo_save (cr);
 178         cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
 179         cairo_paint (cr);
 180         cairo_restore (cr);
 181
 182         cairo_rectangle( cr, 2, 2, w-3, h-3 );
 183
 184         cairo_set_source_rgba (cr,
 185                                GL_COLOR_F_RED   (color),
 186                                GL_COLOR_F_GREEN (color),
 187                                GL_COLOR_F_BLUE  (color),
 188                                GL_COLOR_F_ALPHA (color));
 189         cairo_fill_preserve( cr );
 190
 191         cairo_set_line_width (cr, 1.0);
 192         cairo_set_source_rgb (cr, 0.5, 0.5, 0.5);
 193         cairo_stroke (cr);
 194
 195         cairo_destroy( cr );
 196
 197         pixbuf = gl_util_cairo_convert_to_pixbuf (surface);
 198         cairo_surface_destroy (surface);
 199
 200         return pixbuf;
 201 }
 202
 203
 204 /*****************************************************************************/
 205 /* Get id.                                                                   */
 206 /*****************************************************************************/
 207 gint
 208 gl_color_combo_color_menu_item_get_id (glColorComboColorMenuItem *this)
 209 {
 210         return this->priv->id;
 211 }
 212
 213
 214
 215 /*
 216  * Local Variables:       -- emacs
 217  * mode: C                -- emacs
 218  * c-basic-offset: 8      -- emacs
 219  * tab-width: 8           -- emacs
 220  * indent-tabs-mode: nil  -- emacs
 221  * End:                   -- emacs
 222  */