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_histogram.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         gboolean need_update;
  46         gint idle_id;
  47 };
  48
  49 static gboolean bar_pane_histogram_update_cb(gpointer data);
  50
  51
  52 static void bar_pane_histogram_update(PaneHistogramData *phd)
  53 {
  54         if (phd->pixbuf) g_object_unref(phd->pixbuf);
  55         phd->pixbuf = NULL;
  56
  57         gtk_label_set_text(GTK_LABEL(phd->pane.title), histogram_label(phd->histogram));
  58
  59         if (!phd->histogram_width || !phd->histogram_height || !phd->fd) return;
  60
  61         /* histmap_get is relatively expensive, run it only when we really need it
  62            and with lower priority than pixbuf_renderer
  63            FIXME: this does not work for fullscreen*/
  64         if (GTK_WIDGET_DRAWABLE(phd->drawing_area))
  65                 {
  66                 if (phd->idle_id == -1) phd->idle_id = g_idle_add_full(G_PRIORITY_DEFAULT_IDLE, bar_pane_histogram_update_cb, phd, NULL);
  67                 }
  68         else
  69                 {
  70                 phd->need_update = TRUE;
  71                 }
  72 }
  73
  74 static gboolean bar_pane_histogram_update_cb(gpointer data)
  75 {
  76         const HistMap *histmap;
  77         PaneHistogramData *phd = data;
  78
  79         phd->idle_id = -1;
  80         phd->need_update = FALSE;
  81
  82         gtk_widget_queue_draw_area(GTK_WIDGET(phd->drawing_area), 0, 0, phd->histogram_width, phd->histogram_height);
  83
  84         if (phd->fd == NULL) return FALSE;
  85         histmap = histmap_get(phd->fd);
  86
  87         if (!histmap)
  88                 {
  89                 histmap_start_idle(phd->fd);
  90                 return FALSE;
  91                 }
  92
  93         phd->pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, phd->histogram_width, phd->histogram_height);
  94         gdk_pixbuf_fill(phd->pixbuf, 0xffffffff);
  95         histogram_draw(phd->histogram, histmap, phd->pixbuf, 0, 0, phd->histogram_width, phd->histogram_height);
  96
  97         return FALSE;
  98 }
  99
 100
 101 static void bar_pane_histogram_set_fd(GtkWidget *pane, FileData *fd)
 102 {
 103         PaneHistogramData *phd;
 104
 105         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
 106         if (!phd) return;
 107
 108         file_data_unref(phd->fd);
 109         phd->fd = file_data_ref(fd);
 110
 111         bar_pane_histogram_update(phd);
 112 }
 113
 114 static void bar_pane_histogram_write_config(GtkWidget *pane, GString *outstr, gint indent)
 115 {
 116         PaneHistogramData *phd;
 117
 118         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
 119         if (!phd) return;
 120
 121         WRITE_NL(); WRITE_STRING("<pane_histogram ");
 122         write_char_option(outstr, indent, "id", phd->pane.id);
 123         write_char_option(outstr, indent, "title", gtk_label_get_text(GTK_LABEL(phd->pane.title)));
 124         WRITE_BOOL(phd->pane, expanded);
 125         WRITE_INT(*phd->histogram, histogram_channel);
 126         WRITE_INT(*phd->histogram, histogram_mode);
 127         WRITE_STRING("/>");
 128 }
 129
 130 static void bar_pane_histogram_notify_cb(FileData *fd, NotifyType type, gpointer data)
 131 {
 132         PaneHistogramData *phd = data;
 133         if ((type & (NOTIFY_REREAD | NOTIFY_CHANGE | NOTIFY_HISTMAP | NOTIFY_PIXBUF)) && fd == phd->fd)
 134                 {
 135                 DEBUG_1("Notify pane_histogram: %s %04x", fd->path, type);
 136                 bar_pane_histogram_update(phd);
 137                 }
 138 }
 139
 140 static gboolean bar_pane_histogram_expose_event_cb(GtkWidget *widget, GdkEventExpose *event, gpointer data)
 141 {
 142         PaneHistogramData *phd = data;
 143         if (!phd) return TRUE;
 144
 145         if (phd->need_update)
 146                 {
 147                 bar_pane_histogram_update(phd);
 148                 }
 149
 150         if (!phd->pixbuf) return TRUE;
 151
 152         gdk_draw_pixbuf(widget->window,
 153                         widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
 154                         phd->pixbuf,
 155                         0, 0,
 156                         0, 0,
 157                         -1, -1,
 158                         GDK_RGB_DITHER_NORMAL, 0, 0);
 159         return TRUE;
 160 }
 161
 162 static void bar_pane_histogram_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data)
 163 {
 164         PaneHistogramData *phd = data;
 165
 166         phd->histogram_width = allocation->width;
 167         phd->histogram_height = allocation->height;
 168         bar_pane_histogram_update(phd);
 169 }
 170
 171 static void bar_pane_histogram_close(GtkWidget *pane)
 172 {
 173         PaneHistogramData *phd;
 174
 175         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
 176         if (!phd) return;
 177
 178         gtk_widget_destroy(phd->widget);
 179 }
 180
 181 static void bar_pane_histogram_destroy(GtkWidget *widget, gpointer data)
 182 {
 183         PaneHistogramData *phd = data;
 184
 185         g_source_remove(phd->idle_id);
 186         file_data_unregister_notify_func(bar_pane_histogram_notify_cb, phd);
 187
 188         file_data_unref(phd->fd);
 189         histogram_free(phd->histogram);
 190         if (phd->pixbuf) g_object_unref(phd->pixbuf);
 191         g_free(phd->pane.id);
 192
 193         g_free(phd);
 194 }
 195
 196 static void bar_pane_histogram_popup_channels_cb(GtkWidget *widget, gpointer data)
 197 {
 198         PaneHistogramData *phd;
 199         gint channel;
 200
 201         if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(widget))) return;
 202
 203         phd = submenu_item_get_data(widget);
 204
 205         if (!phd) return;
 206
 207         channel = GPOINTER_TO_INT(data);
 208         if (channel == histogram_get_channel(phd->histogram)) return;
 209
 210         histogram_set_channel(phd->histogram, channel);
 211         bar_pane_histogram_update(phd);
 212 }
 213
 214 static void bar_pane_histogram_popup_logmode_cb(GtkWidget *widget, gpointer data)
 215 {
 216         PaneHistogramData *phd;
 217         gint logmode;
 218
 219         if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(widget))) return;
 220
 221         phd = submenu_item_get_data(widget);
 222
 223         if (!phd) return;
 224
 225         logmode = GPOINTER_TO_INT(data);
 226         if (logmode == histogram_get_mode(phd->histogram)) return;
 227
 228         histogram_set_mode(phd->histogram, logmode);
 229         bar_pane_histogram_update(phd);
 230 }
 231
 232 static GtkWidget *bar_pane_histogram_add_radio(GtkWidget *menu, GtkWidget *parent,
 233                                         const gchar *label,
 234                                         GCallback func, gint value,
 235                                         gboolean show_current, gint current_value)
 236 {
 237         GtkWidget *item;
 238
 239         if (show_current)
 240                 {
 241                 item = menu_item_add_radio(menu, parent,
 242                                            label, (value == current_value),
 243                                            func, GINT_TO_POINTER((gint)value));
 244                 }
 245         else
 246                 {
 247                 item = menu_item_add(menu, label,
 248                                      func, GINT_TO_POINTER((gint)value));
 249                 }
 250
 251         return item;
 252 }
 253
 254 GtkWidget *bar_pane_histogram_add_channels(GtkWidget *menu, GCallback func, gpointer data,
 255                                            gboolean show_current, gint current_value)
 256 {
 257         GtkWidget *submenu;
 258         GtkWidget *parent;
 259
 260         submenu = gtk_menu_new();
 261         g_object_set_data(G_OBJECT(submenu), "submenu_data", data);
 262
 263         parent = bar_pane_histogram_add_radio(submenu, NULL, _("_Red"), func, HCHAN_R, show_current, current_value);
 264         bar_pane_histogram_add_radio(submenu, parent, _("_Green"), func, HCHAN_G, show_current, current_value);
 265         bar_pane_histogram_add_radio(submenu, parent, _("_Blue"),func, HCHAN_B, show_current, current_value);
 266         bar_pane_histogram_add_radio(submenu, parent, _("_RGB"),func, HCHAN_RGB, show_current, current_value);
 267         bar_pane_histogram_add_radio(submenu, parent, _("_Value"),func, HCHAN_MAX, show_current, current_value);
 268
 269         if (menu)
 270                 {
 271                 GtkWidget *item;
 272
 273                 item = menu_item_add(menu, _("Channels"), NULL, NULL);
 274                 gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), submenu);
 275                 return item;
 276                 }
 277
 278         return submenu;
 279 }
 280 GtkWidget *bar_pane_histogram_add_logmode(GtkWidget *menu, GCallback func, gpointer data,
 281                                            gboolean show_current, gint current_value)
 282 {
 283         GtkWidget *submenu;
 284         GtkWidget *parent;
 285
 286         submenu = gtk_menu_new();
 287         g_object_set_data(G_OBJECT(submenu), "submenu_data", data);
 288
 289         parent = bar_pane_histogram_add_radio(submenu, NULL, _("_Linear"), func, 0, show_current, current_value);
 290         bar_pane_histogram_add_radio(submenu, parent, _("Lo_garithmical"), func, 1, show_current, current_value);
 291
 292         if (menu)
 293                 {
 294                 GtkWidget *item;
 295
 296                 item = menu_item_add(menu, _("Mode"), NULL, NULL);
 297                 gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), submenu);
 298                 return item;
 299                 }
 300
 301         return submenu;
 302 }
 303
 304
 305 static GtkWidget *bar_pane_histogram_menu(PaneHistogramData *phd)
 306 {
 307         GtkWidget *menu;
 308         static gboolean show_current = TRUE;
 309
 310         menu = popup_menu_short_lived();
 311         bar_pane_histogram_add_channels(menu, G_CALLBACK(bar_pane_histogram_popup_channels_cb), phd,
 312                                         show_current, histogram_get_channel(phd->histogram));
 313         bar_pane_histogram_add_logmode(menu, G_CALLBACK(bar_pane_histogram_popup_logmode_cb), phd,
 314                                        show_current, histogram_get_mode(phd->histogram));
 315
 316         return menu;
 317 }
 318
 319 static gboolean bar_pane_histogram_press_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
 320 {
 321         PaneHistogramData *phd = data;
 322
 323         if (bevent->button == MOUSE_BUTTON_RIGHT)
 324                 {
 325                 GtkWidget *menu;
 326
 327                 menu = bar_pane_histogram_menu(phd);
 328                 gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL, bevent->button, bevent->time);
 329                 return TRUE;
 330         }
 331
 332         return FALSE;
 333 }
 334
 335
 336 static GtkWidget *bar_pane_histogram_new(const gchar *id, const gchar *title, gint height, gboolean expanded, gint histogram_channel, gint histogram_mode)
 337 {
 338         PaneHistogramData *phd;
 339
 340         phd = g_new0(PaneHistogramData, 1);
 341
 342         phd->pane.pane_set_fd = bar_pane_histogram_set_fd;
 343         phd->pane.pane_write_config = bar_pane_histogram_write_config;
 344         phd->pane.title = bar_pane_expander_title(title);
 345         phd->pane.id = g_strdup(id);
 346         phd->pane.type = PANE_HISTOGRAM;
 347
 348         phd->pane.expanded = expanded;
 349         phd->idle_id = -1;
 350
 351         phd->histogram = histogram_new();
 352
 353         histogram_set_channel(phd->histogram, histogram_channel);
 354         histogram_set_mode(phd->histogram, histogram_mode);
 355
 356         phd->widget = gtk_vbox_new(FALSE, PREF_PAD_GAP);
 357
 358         g_object_set_data(G_OBJECT(phd->widget), "pane_data", phd);
 359         g_signal_connect(G_OBJECT(phd->widget), "destroy",
 360                          G_CALLBACK(bar_pane_histogram_destroy), phd);
 361
 362
 363         gtk_widget_set_size_request(GTK_WIDGET(phd->widget), -1, height);
 364
 365         phd->drawing_area = gtk_drawing_area_new();
 366         g_signal_connect_after(G_OBJECT(phd->drawing_area), "size_allocate",
 367                                G_CALLBACK(bar_pane_histogram_size_cb), phd);
 368
 369         g_signal_connect(G_OBJECT(phd->drawing_area), "expose_event",
 370                          G_CALLBACK(bar_pane_histogram_expose_event_cb), phd);
 371
 372         gtk_box_pack_start(GTK_BOX(phd->widget), phd->drawing_area, TRUE, TRUE, 0);
 373         gtk_widget_show(phd->drawing_area);
 374         gtk_widget_add_events(phd->drawing_area, GDK_BUTTON_PRESS_MASK);
 375
 376         g_signal_connect(G_OBJECT(phd->drawing_area), "button_press_event", G_CALLBACK(bar_pane_histogram_press_cb), phd);
 377
 378         gtk_widget_show(phd->widget);
 379
 380         file_data_register_notify_func(bar_pane_histogram_notify_cb, phd, NOTIFY_PRIORITY_LOW);
 381
 382         return phd->widget;
 383 }
 384
 385 GtkWidget *bar_pane_histogram_new_from_config(const gchar **attribute_names, const gchar **attribute_values)
 386 {
 387         gchar *title = NULL;
 388         gchar *id = g_strdup("histogram");
 389         gboolean expanded = TRUE;
 390         gint height = 80;
 391         gint histogram_channel = HCHAN_RGB;
 392         gint histogram_mode = 0;
 393         GtkWidget *ret;
 394
 395         while (*attribute_names)
 396                 {
 397                 const gchar *option = *attribute_names++;
 398                 const gchar *value = *attribute_values++;
 399
 400                 if (READ_CHAR_FULL("id", id)) continue;
 401                 if (READ_CHAR_FULL("title", title)) continue;
 402                 if (READ_BOOL_FULL("expanded", expanded)) continue;
 403                 if (READ_INT_FULL("histogram_channel", histogram_channel)) continue;
 404                 if (READ_INT_FULL("histogram_mode", histogram_mode)) continue;
 405
 406                 log_printf("unknown attribute %s = %s\n", option, value);
 407                 }
 408
 409         bar_pane_translate_title(PANE_HISTOGRAM, id, &title);
 410         ret = bar_pane_histogram_new(id, title, height, expanded, histogram_channel, histogram_mode);
 411         g_free(title);
 412         g_free(id);
 413         return ret;
 414 }
 415
 416 void bar_pane_histogram_update_from_config(GtkWidget *pane, const gchar **attribute_names, const gchar **attribute_values)
 417 {
 418         PaneHistogramData *phd;
 419
 420         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
 421         if (!phd) return;
 422
 423         gint histogram_channel = phd->histogram->histogram_channel;
 424         gint histogram_mode = phd->histogram->histogram_mode;
 425
 426         while (*attribute_names)
 427                 {
 428                 const gchar *option = *attribute_names++;
 429                 const gchar *value = *attribute_values++;
 430
 431                 if (READ_CHAR_FULL("id", phd->pane.id)) continue;
 432 //              if (READ_CHAR_FULL("pane.title", title)) continue;
 433                 if (READ_BOOL_FULL("expanded", phd->pane.expanded)) continue;
 434                 if (READ_INT_FULL("histogram_channel", histogram_channel)) continue;
 435                 if (READ_INT_FULL("histogram_mode", histogram_mode)) continue;
 436
 437
 438                 log_printf("unknown attribute %s = %s\n", option, value);
 439                 }
 440
 441         histogram_set_channel(phd->histogram, histogram_channel);
 442         histogram_set_mode(phd->histogram, histogram_mode);
 443
 444         bar_update_expander(pane);
 445         bar_pane_histogram_update(phd);
 446 }
 447
 448
 449 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */