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) bar_pane_histogram_update(phd);
 134 }
 135
 136 static gboolean bar_pane_histogram_expose_event_cb(GtkWidget *widget, GdkEventExpose *event, gpointer data)
 137 {
 138         PaneHistogramData *phd = data;
 139         if (!phd) return TRUE;
 140
 141         if (phd->need_update)
 142                 {
 143                 bar_pane_histogram_update(phd);
 144                 }
 145
 146         if (!phd->pixbuf) return TRUE;
 147
 148         gdk_draw_pixbuf(widget->window,
 149                         widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
 150                         phd->pixbuf,
 151                         0, 0,
 152                         0, 0,
 153                         -1, -1,
 154                         GDK_RGB_DITHER_NORMAL, 0, 0);
 155         return TRUE;
 156 }
 157
 158 static void bar_pane_histogram_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data)
 159 {
 160         PaneHistogramData *phd = data;
 161
 162         phd->histogram_width = allocation->width;
 163         phd->histogram_height = allocation->height;
 164         bar_pane_histogram_update(phd);
 165 }
 166
 167 static void bar_pane_histogram_close(GtkWidget *pane)
 168 {
 169         PaneHistogramData *phd;
 170
 171         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
 172         if (!phd) return;
 173
 174         gtk_widget_destroy(phd->widget);
 175 }
 176
 177 static void bar_pane_histogram_destroy(GtkWidget *widget, gpointer data)
 178 {
 179         PaneHistogramData *phd = data;
 180
 181         g_source_remove(phd->idle_id);
 182         file_data_unregister_notify_func(bar_pane_histogram_notify_cb, phd);
 183
 184         file_data_unref(phd->fd);
 185         histogram_free(phd->histogram);
 186         if (phd->pixbuf) g_object_unref(phd->pixbuf);
 187         g_free(phd->pane.id);
 188
 189         g_free(phd);
 190 }
 191
 192 static void bar_pane_histogram_popup_channels_cb(GtkWidget *widget, gpointer data)
 193 {
 194         PaneHistogramData *phd;
 195         gint channel;
 196
 197         if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(widget))) return;
 198
 199         phd = submenu_item_get_data(widget);
 200
 201         if (!phd) return;
 202
 203         channel = GPOINTER_TO_INT(data);
 204         if (channel == histogram_get_channel(phd->histogram)) return;
 205
 206         histogram_set_channel(phd->histogram, channel);
 207         bar_pane_histogram_update(phd);
 208 }
 209
 210 static void bar_pane_histogram_popup_logmode_cb(GtkWidget *widget, gpointer data)
 211 {
 212         PaneHistogramData *phd;
 213         gint logmode;
 214
 215         if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(widget))) return;
 216
 217         phd = submenu_item_get_data(widget);
 218
 219         if (!phd) return;
 220
 221         logmode = GPOINTER_TO_INT(data);
 222         if (logmode == histogram_get_mode(phd->histogram)) return;
 223
 224         histogram_set_mode(phd->histogram, logmode);
 225         bar_pane_histogram_update(phd);
 226 }
 227
 228 static GtkWidget *bar_pane_histogram_add_radio(GtkWidget *menu, GtkWidget *parent,
 229                                         const gchar *label,
 230                                         GCallback func, gint value,
 231                                         gboolean show_current, gint current_value)
 232 {
 233         GtkWidget *item;
 234
 235         if (show_current)
 236                 {
 237                 item = menu_item_add_radio(menu, parent,
 238                                            label, (value == current_value),
 239                                            func, GINT_TO_POINTER((gint)value));
 240                 }
 241         else
 242                 {
 243                 item = menu_item_add(menu, label,
 244                                      func, GINT_TO_POINTER((gint)value));
 245                 }
 246
 247         return item;
 248 }
 249
 250 GtkWidget *bar_pane_histogram_add_channels(GtkWidget *menu, GCallback func, gpointer data,
 251                                            gboolean show_current, gint current_value)
 252 {
 253         GtkWidget *submenu;
 254         GtkWidget *parent;
 255
 256         submenu = gtk_menu_new();
 257         g_object_set_data(G_OBJECT(submenu), "submenu_data", data);
 258
 259         parent = bar_pane_histogram_add_radio(submenu, NULL, _("_Red"), func, HCHAN_R, show_current, current_value);
 260         bar_pane_histogram_add_radio(submenu, parent, _("_Green"), func, HCHAN_G, show_current, current_value);
 261         bar_pane_histogram_add_radio(submenu, parent, _("_Blue"),func, HCHAN_B, show_current, current_value);
 262         bar_pane_histogram_add_radio(submenu, parent, _("_RGB"),func, HCHAN_RGB, show_current, current_value);
 263         bar_pane_histogram_add_radio(submenu, parent, _("_Value"),func, HCHAN_MAX, show_current, current_value);
 264
 265         if (menu)
 266                 {
 267                 GtkWidget *item;
 268
 269                 item = menu_item_add(menu, _("Channels"), NULL, NULL);
 270                 gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), submenu);
 271                 return item;
 272                 }
 273
 274         return submenu;
 275 }
 276 GtkWidget *bar_pane_histogram_add_logmode(GtkWidget *menu, GCallback func, gpointer data,
 277                                            gboolean show_current, gint current_value)
 278 {
 279         GtkWidget *submenu;
 280         GtkWidget *parent;
 281
 282         submenu = gtk_menu_new();
 283         g_object_set_data(G_OBJECT(submenu), "submenu_data", data);
 284
 285         parent = bar_pane_histogram_add_radio(submenu, NULL, _("_Linear"), func, 0, show_current, current_value);
 286         bar_pane_histogram_add_radio(submenu, parent, _("Lo_garithmical"), func, 1, show_current, current_value);
 287
 288         if (menu)
 289                 {
 290                 GtkWidget *item;
 291
 292                 item = menu_item_add(menu, _("Mode"), NULL, NULL);
 293                 gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), submenu);
 294                 return item;
 295                 }
 296
 297         return submenu;
 298 }
 299
 300
 301 static GtkWidget *bar_pane_histogram_menu(PaneHistogramData *phd)
 302 {
 303         GtkWidget *menu;
 304         static gboolean show_current = TRUE;
 305
 306         menu = popup_menu_short_lived();
 307         bar_pane_histogram_add_channels(menu, G_CALLBACK(bar_pane_histogram_popup_channels_cb), phd,
 308                                         show_current, histogram_get_channel(phd->histogram));
 309         bar_pane_histogram_add_logmode(menu, G_CALLBACK(bar_pane_histogram_popup_logmode_cb), phd,
 310                                        show_current, histogram_get_mode(phd->histogram));
 311
 312         return menu;
 313 }
 314
 315 static gboolean bar_pane_histogram_press_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
 316 {
 317         PaneHistogramData *phd = data;
 318
 319         if (bevent->button == MOUSE_BUTTON_RIGHT)
 320                 {
 321                 GtkWidget *menu;
 322
 323                 menu = bar_pane_histogram_menu(phd);
 324                 gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL, bevent->button, bevent->time);
 325                 return TRUE;
 326         }
 327
 328         return FALSE;
 329 }
 330
 331
 332 static GtkWidget *bar_pane_histogram_new(const gchar *id, const gchar *title, gint height, gboolean expanded, gint histogram_channel, gint histogram_mode)
 333 {
 334         PaneHistogramData *phd;
 335
 336         phd = g_new0(PaneHistogramData, 1);
 337
 338         phd->pane.pane_set_fd = bar_pane_histogram_set_fd;
 339         phd->pane.pane_write_config = bar_pane_histogram_write_config;
 340         phd->pane.title = bar_pane_expander_title(title);
 341         phd->pane.id = g_strdup(id);
 342         phd->pane.type = PANE_HISTOGRAM;
 343
 344         phd->pane.expanded = expanded;
 345         phd->idle_id = -1;
 346
 347         phd->histogram = histogram_new();
 348
 349         histogram_set_channel(phd->histogram, histogram_channel);
 350         histogram_set_mode(phd->histogram, histogram_mode);
 351
 352         phd->widget = gtk_vbox_new(FALSE, PREF_PAD_GAP);
 353
 354         g_object_set_data(G_OBJECT(phd->widget), "pane_data", phd);
 355         g_signal_connect(G_OBJECT(phd->widget), "destroy",
 356                          G_CALLBACK(bar_pane_histogram_destroy), phd);
 357
 358
 359         gtk_widget_set_size_request(GTK_WIDGET(phd->widget), -1, height);
 360
 361         phd->drawing_area = gtk_drawing_area_new();
 362         g_signal_connect_after(G_OBJECT(phd->drawing_area), "size_allocate",
 363                                G_CALLBACK(bar_pane_histogram_size_cb), phd);
 364
 365         g_signal_connect(G_OBJECT(phd->drawing_area), "expose_event",
 366                          G_CALLBACK(bar_pane_histogram_expose_event_cb), phd);
 367
 368         gtk_box_pack_start(GTK_BOX(phd->widget), phd->drawing_area, TRUE, TRUE, 0);
 369         gtk_widget_show(phd->drawing_area);
 370         gtk_widget_add_events(phd->drawing_area, GDK_BUTTON_PRESS_MASK);
 371
 372         g_signal_connect(G_OBJECT(phd->drawing_area), "button_press_event", G_CALLBACK(bar_pane_histogram_press_cb), phd);
 373
 374         gtk_widget_show(phd->widget);
 375
 376         file_data_register_notify_func(bar_pane_histogram_notify_cb, phd, NOTIFY_PRIORITY_LOW);
 377
 378         return phd->widget;
 379 }
 380
 381 GtkWidget *bar_pane_histogram_new_from_config(const gchar **attribute_names, const gchar **attribute_values)
 382 {
 383         gchar *title = NULL;
 384         gchar *id = g_strdup("histogram");
 385         gboolean expanded = TRUE;
 386         gint height = 80;
 387         gint histogram_channel = HCHAN_RGB;
 388         gint histogram_mode = 0;
 389         GtkWidget *ret;
 390
 391         while (*attribute_names)
 392                 {
 393                 const gchar *option = *attribute_names++;
 394                 const gchar *value = *attribute_values++;
 395
 396                 if (READ_CHAR_FULL("id", id)) continue;
 397                 if (READ_CHAR_FULL("title", title)) continue;
 398                 if (READ_BOOL_FULL("expanded", expanded)) continue;
 399                 if (READ_INT_FULL("histogram_channel", histogram_channel)) continue;
 400                 if (READ_INT_FULL("histogram_mode", histogram_mode)) continue;
 401
 402                 log_printf("unknown attribute %s = %s\n", option, value);
 403                 }
 404
 405         bar_pane_translate_title(PANE_HISTOGRAM, id, &title);
 406         ret = bar_pane_histogram_new(id, title, height, expanded, histogram_channel, histogram_mode);
 407         g_free(title);
 408         g_free(id);
 409         return ret;
 410 }
 411
 412 void bar_pane_histogram_update_from_config(GtkWidget *pane, const gchar **attribute_names, const gchar **attribute_values)
 413 {
 414         PaneHistogramData *phd;
 415
 416         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
 417         if (!phd) return;
 418
 419         gint histogram_channel = phd->histogram->histogram_channel;
 420         gint histogram_mode = phd->histogram->histogram_mode;
 421
 422         while (*attribute_names)
 423                 {
 424                 const gchar *option = *attribute_names++;
 425                 const gchar *value = *attribute_values++;
 426
 427                 if (READ_CHAR_FULL("id", phd->pane.id)) continue;
 428 //              if (READ_CHAR_FULL("pane.title", title)) continue;
 429                 if (READ_BOOL_FULL("expanded", phd->pane.expanded)) continue;
 430                 if (READ_INT_FULL("histogram_channel", histogram_channel)) continue;
 431                 if (READ_INT_FULL("histogram_mode", histogram_mode)) continue;
 432
 433
 434                 log_printf("unknown attribute %s = %s\n", option, value);
 435                 }
 436
 437         histogram_set_channel(phd->histogram, histogram_channel);
 438         histogram_set_mode(phd->histogram, histogram_mode);
 439
 440         bar_update_expander(pane);
 441         bar_pane_histogram_update(phd);
 442 }
 443
 444
 445 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */