src/bar_histogram.c

   1 /*
   2  * Geeqie
   3  * (C) 2004 John Ellis
   4  * Copyright (C) 2008 - 2009 The Geeqie Team
   5  *
   6  * Author: Vladimir Nadvornik
   7  *
   8  * This software is released under the GNU General Public License (GNU GPL).
   9  * Please read the included file COPYING for more information.
  10  * This software comes with no warranty of any kind, use at your own risk!
  11  */
  12
  13
  14 #include "main.h"
  15 #include "bar_comment.h"
  16
  17 #include "bar.h"
  18 #include "metadata.h"
  19 #include "filedata.h"
  20 #include "menu.h"
  21 #include "ui_menu.h"
  22 #include "ui_misc.h"
  23 #include "histogram.h"
  24 #include "rcfile.h"
  25
  26 /*
  27  *-------------------------------------------------------------------
  28  * keyword / comment utils
  29  *-------------------------------------------------------------------
  30  */
  31
  32
  33
  34 typedef struct _PaneHistogramData PaneHistogramData;
  35 struct _PaneHistogramData
  36 {
  37         PaneData pane;
  38         GtkWidget *widget;
  39         GtkWidget *drawing_area;
  40         Histogram *histogram;
  41         gint histogram_width;
  42         gint histogram_height;
  43         GdkPixbuf *pixbuf;
  44         FileData *fd;
  45 };
  46
  47
  48 static void bar_pane_histogram_update(PaneHistogramData *phd)
  49 {
  50         const HistMap *histmap;
  51         if (phd->pixbuf) g_object_unref(phd->pixbuf);
  52         phd->pixbuf = NULL;
  53
  54         if (!phd->histogram_width || !phd->histogram_height || !phd->fd) return;
  55
  56         gtk_widget_queue_draw_area(GTK_WIDGET(phd->drawing_area), 0, 0, phd->histogram_width, phd->histogram_height);
  57
  58         histmap = histmap_get(phd->fd);
  59
  60         if (!histmap) return;
  61
  62         phd->pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, phd->histogram_width, phd->histogram_height);
  63         gdk_pixbuf_fill(phd->pixbuf, 0xffffffff);
  64         histogram_draw(phd->histogram, histmap, phd->pixbuf, 0, 0, phd->histogram_width, phd->histogram_height);
  65 }
  66
  67
  68 static void bar_pane_histogram_set_fd(GtkWidget *pane, FileData *fd)
  69 {
  70         PaneHistogramData *phd;
  71
  72         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
  73         if (!phd) return;
  74
  75         file_data_unref(phd->fd);
  76         phd->fd = file_data_ref(fd);
  77
  78         bar_pane_histogram_update(phd);
  79 }
  80
  81 static void bar_pane_histogram_write_config(GtkWidget *pane, GString *outstr, gint indent)
  82 {
  83         PaneHistogramData *phd;
  84
  85         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
  86         if (!phd) return;
  87
  88         WRITE_STRING("<pane_histogram\n");
  89         indent++;
  90         WRITE_CHAR(*phd, pane.title);
  91         WRITE_BOOL(*phd, pane.expanded);
  92         indent--;
  93         WRITE_STRING("/>\n");
  94 }
  95
  96
  97 static void bar_pane_histogram_notify_cb(FileData *fd, NotifyType type, gpointer data)
  98 {
  99         PaneHistogramData *phd = data;
 100         if (fd == phd->fd) bar_pane_histogram_update(phd);
 101 }
 102
 103 static gboolean bar_pane_histogram_expose_event_cb (GtkWidget *widget, GdkEventExpose *event, gpointer data)
 104 {
 105         PaneHistogramData *phd = data;
 106         if (!phd || !phd->pixbuf) return TRUE;
 107
 108         gdk_draw_pixbuf(widget->window,
 109                         widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
 110                         phd->pixbuf,
 111                         0, 0,
 112                         0, 0,
 113                         -1, -1,
 114                         GDK_RGB_DITHER_NORMAL, 0, 0);
 115         return TRUE;
 116 }
 117
 118 static void bar_pane_histogram_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data)
 119 {
 120         PaneHistogramData *phd = data;
 121
 122         phd->histogram_width = allocation->width;
 123         phd->histogram_height = allocation->height;
 124         bar_pane_histogram_update(phd);
 125 }
 126
 127 static void bar_pane_histogram_close(GtkWidget *pane)
 128 {
 129         PaneHistogramData *phd;
 130
 131         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
 132         if (!phd) return;
 133
 134         gtk_widget_destroy(phd->widget);
 135 }
 136
 137 static void bar_pane_histogram_destroy(GtkWidget *widget, gpointer data)
 138 {
 139         PaneHistogramData *phd = data;
 140
 141         file_data_unregister_notify_func(bar_pane_histogram_notify_cb, phd);
 142
 143         file_data_unref(phd->fd);
 144         g_free(phd->pane.title);
 145         histogram_free(phd->histogram);
 146         if (phd->pixbuf) g_object_unref(phd->pixbuf);
 147
 148         g_free(phd);
 149 }
 150
 151 static void bar_pane_histogram_popup_channels_cb(GtkWidget *widget, gpointer data)
 152 {
 153         PaneHistogramData *phd;
 154         gint channel;
 155
 156         if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(widget))) return;
 157
 158         phd = submenu_item_get_data(widget);
 159
 160         if (!phd) return;
 161
 162         channel = GPOINTER_TO_INT(data);
 163         if (channel == histogram_get_channel(phd->histogram)) return;
 164
 165         histogram_set_channel(phd->histogram, channel);
 166         bar_pane_histogram_update(phd);
 167 }
 168
 169 static void bar_pane_histogram_popup_logmode_cb(GtkWidget *widget, gpointer data)
 170 {
 171         PaneHistogramData *phd;
 172         gint logmode;
 173
 174         if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(widget))) return;
 175
 176         phd = submenu_item_get_data(widget);
 177
 178         if (!phd) return;
 179
 180         logmode = GPOINTER_TO_INT(data);
 181         if (logmode == histogram_get_mode(phd->histogram)) return;
 182
 183         histogram_set_mode(phd->histogram, logmode);
 184         bar_pane_histogram_update(phd);
 185 }
 186
 187 static GtkWidget *bar_pane_histogram_add_radio(GtkWidget *menu, GtkWidget *parent,
 188                                         const gchar *label,
 189                                         GCallback func, gint value,
 190                                         gboolean show_current, gint current_value)
 191 {
 192         GtkWidget *item;
 193
 194         if (show_current)
 195                 {
 196                 item = menu_item_add_radio(menu, parent,
 197                                            label, (value == current_value),
 198                                            func, GINT_TO_POINTER((gint)value));
 199                 }
 200         else
 201                 {
 202                 item = menu_item_add(menu, label,
 203                                      func, GINT_TO_POINTER((gint)value));
 204                 }
 205
 206         return item;
 207 }
 208
 209 GtkWidget *bar_pane_histogram_add_channels(GtkWidget *menu, GCallback func, gpointer data,
 210                                            gboolean show_current, gint current_value)
 211 {
 212         GtkWidget *submenu;
 213         GtkWidget *parent;
 214
 215         submenu = gtk_menu_new();
 216         g_object_set_data(G_OBJECT(submenu), "submenu_data", data);
 217
 218         parent = bar_pane_histogram_add_radio(submenu, NULL, _("_Red"), func, HCHAN_R, show_current, current_value);
 219         bar_pane_histogram_add_radio(submenu, parent, _("_Green"), func, HCHAN_G, show_current, current_value);
 220         bar_pane_histogram_add_radio(submenu, parent, _("_Blue"),func, HCHAN_B, show_current, current_value);
 221         bar_pane_histogram_add_radio(submenu, parent, _("_RGB"),func, HCHAN_RGB, show_current, current_value);
 222         bar_pane_histogram_add_radio(submenu, parent, _("_Value"),func, HCHAN_MAX, show_current, current_value);
 223
 224         if (menu)
 225                 {
 226                 GtkWidget *item;
 227
 228                 item = menu_item_add(menu, _("Channels"), NULL, NULL);
 229                 gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), submenu);
 230                 return item;
 231                 }
 232
 233         return submenu;
 234 }
 235 GtkWidget *bar_pane_histogram_add_logmode(GtkWidget *menu, GCallback func, gpointer data,
 236                                            gboolean show_current, gint current_value)
 237 {
 238         GtkWidget *submenu;
 239         GtkWidget *parent;
 240
 241         submenu = gtk_menu_new();
 242         g_object_set_data(G_OBJECT(submenu), "submenu_data", data);
 243
 244         parent = bar_pane_histogram_add_radio(submenu, NULL, _("_Linear"), func, 0, show_current, current_value);
 245         bar_pane_histogram_add_radio(submenu, parent, _("Lo_garithmical"), func, 1, show_current, current_value);
 246
 247         if (menu)
 248                 {
 249                 GtkWidget *item;
 250
 251                 item = menu_item_add(menu, _("Mode"), NULL, NULL);
 252                 gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), submenu);
 253                 return item;
 254                 }
 255
 256         return submenu;
 257 }
 258
 259
 260 static GtkWidget *bar_pane_histogram_menu(PaneHistogramData *phd)
 261 {
 262         GtkWidget *menu;
 263         static gboolean show_current = TRUE;
 264
 265         menu = popup_menu_short_lived();
 266         bar_pane_histogram_add_channels(menu, G_CALLBACK(bar_pane_histogram_popup_channels_cb), phd,
 267                                         show_current, histogram_get_channel(phd->histogram));
 268         bar_pane_histogram_add_logmode(menu, G_CALLBACK(bar_pane_histogram_popup_logmode_cb), phd,
 269                                        show_current, histogram_get_mode(phd->histogram));
 270
 271         return menu;
 272 }
 273
 274 static gboolean bar_pane_histogram_press_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
 275 {
 276         PaneHistogramData *phd = data;
 277
 278         if (bevent->button == MOUSE_BUTTON_RIGHT)
 279                 {
 280                 GtkWidget *menu;
 281
 282                 menu = bar_pane_histogram_menu(phd);
 283                 gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL, bevent->button, bevent->time);
 284                 return TRUE;
 285         }
 286
 287         return FALSE;
 288 }
 289
 290
 291 GtkWidget *bar_pane_histogram_new(const gchar *title, gint height, gint expanded)
 292 {
 293         PaneHistogramData *phd;
 294
 295         phd = g_new0(PaneHistogramData, 1);
 296
 297         phd->pane.pane_set_fd = bar_pane_histogram_set_fd;
 298         phd->pane.pane_write_config = bar_pane_histogram_write_config;
 299         phd->pane.title = g_strdup(title);
 300         phd->pane.expanded = expanded;
 301
 302         phd->histogram = histogram_new();
 303
 304         histogram_set_channel(phd->histogram, HCHAN_RGB);
 305         histogram_set_mode(phd->histogram, 0);
 306
 307         phd->widget = gtk_vbox_new(FALSE, PREF_PAD_GAP);
 308
 309         g_object_set_data(G_OBJECT(phd->widget), "pane_data", phd);
 310         g_signal_connect(G_OBJECT(phd->widget), "destroy",
 311                          G_CALLBACK(bar_pane_histogram_destroy), phd);
 312
 313
 314         gtk_widget_set_size_request(GTK_WIDGET(phd->widget), -1, height);
 315
 316         phd->drawing_area = gtk_drawing_area_new();
 317         g_signal_connect_after(G_OBJECT(phd->drawing_area), "size_allocate",
 318                                G_CALLBACK(bar_pane_histogram_size_cb), phd);
 319
 320         g_signal_connect(G_OBJECT(phd->drawing_area), "expose_event",
 321                          G_CALLBACK(bar_pane_histogram_expose_event_cb), phd);
 322
 323         gtk_box_pack_start(GTK_BOX(phd->widget), phd->drawing_area, TRUE, TRUE, 0);
 324         gtk_widget_show(phd->drawing_area);
 325         gtk_widget_add_events(phd->drawing_area, GDK_BUTTON_PRESS_MASK);
 326
 327         g_signal_connect(G_OBJECT(phd->drawing_area), "button_press_event", G_CALLBACK(bar_pane_histogram_press_cb), phd);
 328
 329         gtk_widget_show(phd->widget);
 330
 331         file_data_register_notify_func(bar_pane_histogram_notify_cb, phd, NOTIFY_PRIORITY_LOW);
 332
 333         return phd->widget;
 334 }
 335
 336 GtkWidget *bar_pane_histogram_new_from_config(const gchar **attribute_names, const gchar **attribute_values)
 337 {
 338         gchar *title = g_strdup(_("NoName"));
 339         gboolean expanded = TRUE;
 340         gint height = 80;
 341
 342         while (*attribute_names)
 343                 {
 344                 const gchar *option = *attribute_names++;
 345                 const gchar *value = *attribute_values++;
 346
 347                 if (READ_CHAR_FULL("pane.title", title)) continue;
 348                 if (READ_BOOL_FULL("pane.expanded", expanded)) continue;
 349
 350
 351                 DEBUG_1("unknown attribute %s = %s", option, value);
 352                 }
 353
 354         return bar_pane_histogram_new(title, height, expanded);
 355 }
 356
 357
 358 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */