src/colorlabel.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 2001 Hiroyuki Yamamoto & The Sylpheed Claws Team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 /* (alfons) - based on a contribution by Satoshi Nagayasu; revised for colorful
  21  * menu and more Sylpheed integration. The idea to put the code in a separate
  22  * file is just that it make it easier to allow "user changeable" label colors.
  23  */
  24
  25 #include "defs.h"
  26
  27 #include <glib.h>
  28 #include <gdk/gdkx.h>
  29 #include <gtk/gtkwidget.h>
  30 #include <gtk/gtkpixmap.h>
  31 #include <gtk/gtkmenu.h>
  32 #include <gtk/gtkcheckmenuitem.h>
  33 #include <gtk/gtklabel.h>
  34 #include <gtk/gtkmenuitem.h>
  35 #include <gtk/gtkalignment.h>
  36 #include <gtk/gtkhbox.h>
  37 #include <gtk/gtkwindow.h>
  38
  39 #include "intl.h"
  40 #include "colorlabel.h"
  41 #include "utils.h"
  42
  43 static gchar *labels[] = {
  44         N_("Orange"),
  45         N_("Red") ,
  46         N_("Pink"),
  47         N_("Sky blue"),
  48         N_("Blue"),
  49         N_("Green"),
  50         N_("Brown")
  51 };
  52
  53 typedef enum LabelColorChangeFlags_ {
  54         LCCF_COLOR = 1 << 0,
  55         LCCF_LABEL = 1 << 1,
  56         LCCF_ALL   = LCCF_COLOR | LCCF_LABEL
  57 } LabelColorChangeFlags;
  58
  59 /* XXX: if you add colors, make sure you also check the procmsg.h.
  60  * color indices are stored as 3 bits; that explains the max. of 7 colors */
  61 static struct
  62 {
  63         LabelColorChangeFlags   changed;
  64         GdkColor                color;
  65
  66         /* XXX: note that the label member is supposed to be dynamically
  67          * allocated and fffreed */
  68         gchar                   *label;
  69         GtkPixmap               *pixmap;
  70 } label_colors[] = {
  71         { LCCF_ALL, { 0, 0xffff, (0x99 << 8), 0x0 },            NULL, NULL },
  72         { LCCF_ALL, { 0, 0xffff, 0, 0 },                        NULL, NULL },
  73         { LCCF_ALL, { 0, 0xffff, (0x66 << 8), 0xffff },         NULL, NULL },
  74         { LCCF_ALL, { 0, 0x0, (0xcc << 8), 0xffff },            NULL, NULL },
  75         { LCCF_ALL, { 0, 0x0, 0x0, 0xffff },                    NULL, NULL },
  76         { LCCF_ALL, { 0, 0x0, 0x99 << 8, 0x0 },                 NULL, NULL },
  77         { LCCF_ALL, { 0, 0x66 << 8, 0x33 << 8, 0x33 << 8 },     NULL, NULL }
  78 };
  79
  80 #define LABEL_COLORS_ELEMS (sizeof label_colors / sizeof label_colors[0])
  81
  82 #define G_RETURN_VAL_IF_INVALID_COLOR(color, val) \
  83         g_return_val_if_fail((color) >= 0 && (color) < LABEL_COLORS_ELEMS, (val))
  84
  85 static void colorlabel_recreate        (gint);
  86 static void colorlabel_recreate_label  (gint);
  87
  88 gint colorlabel_get_color_count(void)
  89 {
  90         return LABEL_COLORS_ELEMS;
  91 }
  92
  93 GdkColor colorlabel_get_color(gint color_index)
  94 {
  95         GdkColor invalid = { 0 };
  96
  97         G_RETURN_VAL_IF_INVALID_COLOR(color_index, invalid);
  98
  99         return label_colors[color_index].color;
 100 }
 101
 102 gchar *colorlabel_get_color_text(gint color_index)
 103 {
 104         G_RETURN_VAL_IF_INVALID_COLOR(color_index, NULL);
 105
 106         colorlabel_recreate_label(color_index);
 107         return label_colors[color_index].label;
 108 }
 109
 110 GtkPixmap *colorlabel_create_color_pixmap(GdkColor color)
 111 {
 112         const gchar *FMT = "+      c #%2.2X%2.2X%2.2X";
 113         gchar buf[40];
 114
 115         /* black frame of 1 pixel */
 116         gchar *dummy_xpm[] = {
 117                 "16 16 3 1",
 118                 "       c None",
 119                 ".      c #000000",
 120                 "+      c #000000",
 121                 "................",
 122                 ".++++++++++++++.",
 123                 ".++++++++++++++.",
 124                 ".++++++++++++++.",
 125                 ".++++++++++++++.",
 126                 ".++++++++++++++.",
 127                 ".++++++++++++++.",
 128                 ".++++++++++++++.",
 129                 ".++++++++++++++.",
 130                 ".++++++++++++++.",
 131                 ".++++++++++++++.",
 132                 ".++++++++++++++.",
 133                 ".++++++++++++++.",
 134                 ".++++++++++++++.",
 135                 ".++++++++++++++.",
 136                 "................"
 137         };
 138
 139         GdkBitmap *xpmmask;
 140         GdkPixmap *xpm;
 141         GtkPixmap *pixmap;
 142
 143         /* put correct color in xpm data */
 144         sprintf(buf, FMT, color.red >> 8, color.green >> 8, color.blue >> 8);
 145         dummy_xpm[3] = buf;
 146
 147         /* XXX: passing NULL as GdkWindow* seems to be possible */
 148         xpm = gdk_pixmap_create_from_xpm_d
 149                 (GDK_ROOT_PARENT(), &xpmmask, NULL, (gchar **) &dummy_xpm);
 150         if (xpm == NULL)
 151                 debug_print("*** NO XPM\n");
 152         pixmap = GTK_PIXMAP(gtk_pixmap_new(xpm, xpmmask));
 153
 154         g_return_val_if_fail(pixmap, NULL);
 155
 156         gdk_pixmap_unref(xpm);
 157         gdk_bitmap_unref(xpmmask);
 158
 159         return pixmap;
 160 }
 161
 162 /* XXX: this function to check if menus with colors and labels should
 163  * be recreated */
 164 gboolean colorlabel_changed(void)
 165 {
 166         gint n;
 167
 168         for (n = 0; n < LABEL_COLORS_ELEMS; n++) {
 169                 if (label_colors[n].changed)
 170                         return TRUE;
 171         }
 172
 173         return FALSE;
 174 }
 175
 176 /* XXX: colorlabel_recreate_XXX are there to make sure everything
 177  * is initialized ok, without having to call a global _xxx_init_
 178  * function */
 179 static void colorlabel_recreate_color(gint color)
 180 {
 181         GtkPixmap *pixmap;
 182
 183         if (!(label_colors[color].changed & LCCF_COLOR))
 184                 return;
 185
 186         pixmap = GTK_PIXMAP(colorlabel_create_color_pixmap(label_colors[color].color));
 187         g_return_if_fail(pixmap);
 188
 189         if (label_colors[color].pixmap)
 190                 gtk_widget_destroy(GTK_WIDGET(label_colors[color].pixmap));
 191
 192         label_colors[color].pixmap = pixmap;
 193         label_colors[color].changed &= ~LCCF_COLOR;
 194 }
 195
 196 static void colorlabel_recreate_label(gint color)
 197 {
 198         if (!label_colors[color].changed & LCCF_LABEL)
 199                 return;
 200
 201         if (label_colors[color].label == NULL)
 202                 label_colors[color].label = g_strdup(gettext(labels[color]));
 203
 204         label_colors[color].changed &= ~LCCF_LABEL;
 205 }
 206
 207 /* XXX: call this function everytime when you're doing important
 208  * stuff with the label_colors[] array */
 209 static void colorlabel_recreate(gint color)
 210 {
 211         colorlabel_recreate_label(color);
 212         colorlabel_recreate_color(color);
 213 }
 214
 215 static void colorlabel_recreate_all(void)
 216 {
 217         gint n;
 218
 219         for ( n = 0; n < LABEL_COLORS_ELEMS; n++)
 220                 colorlabel_recreate(n);
 221 }
 222
 223 /* colorlabel_create_check_color_menu_item() - creates a color
 224  * menu item with a check box */
 225 GtkWidget *colorlabel_create_check_color_menu_item(gint color_index)
 226 {
 227         GtkWidget *label;
 228         GtkWidget *hbox;
 229         GtkWidget *align;
 230         GtkWidget *item;
 231
 232         G_RETURN_VAL_IF_INVALID_COLOR(color_index, NULL);
 233
 234         item  = gtk_check_menu_item_new();
 235
 236         colorlabel_recreate(color_index);
 237
 238         /* XXX: gnome-core::panel::menu.c is a great example of
 239          * how to create pixmap menus */
 240         label = gtk_label_new(label_colors[color_index].label);
 241
 242         gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
 243         gtk_widget_show(label);
 244         hbox = gtk_hbox_new(FALSE, 0);
 245         gtk_widget_show(hbox);
 246         gtk_container_add(GTK_CONTAINER(item), hbox);
 247
 248         align = gtk_alignment_new(0.5, 0.5, 0.0, 0.0);
 249         gtk_widget_show(align);
 250         gtk_container_set_border_width(GTK_CONTAINER(align), 1);
 251
 252         gtk_container_add(GTK_CONTAINER(align),
 253                           GTK_WIDGET(label_colors[color_index].pixmap));
 254         gtk_widget_show(GTK_WIDGET(label_colors[color_index].pixmap));
 255         gtk_widget_set_usize(align, 16, 16);
 256
 257         gtk_box_pack_start(GTK_BOX(hbox), align, FALSE, FALSE, 0);
 258         gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 4);
 259
 260         return item;
 261 }
 262
 263 /* colorlabel_create_color_menu() - creates a color menu without
 264  * checkitems, probably for use in combo items */
 265 GtkWidget *colorlabel_create_color_menu(void)
 266 {
 267         GtkWidget *label;
 268         GtkWidget *hbox;
 269         GtkWidget *align;
 270         GtkWidget *item;
 271         GtkWidget *menu;
 272         gint i;
 273
 274         colorlabel_recreate_all();
 275
 276         /* create the menu items. each item has its color code attached */
 277         menu = gtk_menu_new();
 278         gtk_object_set_data(GTK_OBJECT(menu), "label_color_menu", menu);
 279
 280         item = gtk_menu_item_new_with_label(_("None"));
 281         gtk_menu_append(GTK_MENU(menu), item);
 282         gtk_object_set_data(GTK_OBJECT(item), "color", GUINT_TO_POINTER(0));
 283         gtk_widget_show(item);
 284
 285         /* and the color items */
 286         for (i = 0; i < LABEL_COLORS_ELEMS; i++) {
 287                 GtkPixmap *pixmap = colorlabel_create_color_pixmap(label_colors[i].color);
 288
 289                 item  = gtk_menu_item_new();
 290                 gtk_object_set_data(GTK_OBJECT(item), "color", GUINT_TO_POINTER(i + 1));
 291
 292                 label = gtk_label_new(label_colors[i].label);
 293
 294                 gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
 295                 gtk_widget_show(label);
 296                 hbox = gtk_hbox_new(FALSE, 0);
 297                 gtk_widget_show(hbox);
 298                 gtk_container_add(GTK_CONTAINER(item), hbox);
 299
 300                 align = gtk_alignment_new(0.5, 0.5, 0.0, 0.0);
 301                 gtk_widget_show(align);
 302                 gtk_container_set_border_width(GTK_CONTAINER(align), 1);
 303
 304                 gtk_container_add(GTK_CONTAINER(align), GTK_WIDGET(pixmap));
 305                 gtk_widget_show(GTK_WIDGET(pixmap));
 306                 gtk_widget_set_usize(align, 16, 16);
 307
 308                 gtk_box_pack_start(GTK_BOX(hbox), align, FALSE, FALSE, 0);
 309                 gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 4);
 310
 311                 gtk_menu_append(GTK_MENU(menu), item);
 312                 gtk_widget_show(item);
 313         }
 314
 315         gtk_widget_show(menu);
 316
 317         return menu;
 318 }
 319
 320 guint colorlabel_get_color_menu_active_item(GtkWidget *menu)
 321 {
 322         GtkWidget *menuitem;
 323         guint      color;
 324
 325         g_return_val_if_fail
 326                 (gtk_object_get_data(GTK_OBJECT(menu), "label_color_menu"), 0);
 327         menuitem = gtk_menu_get_active(GTK_MENU(menu));
 328         color = GPOINTER_TO_UINT
 329                 (gtk_object_get_data(GTK_OBJECT(menuitem), "color"));
 330         return color;
 331 }
 332
 333