src/bar_histogram.c

   1 /*
   2  * Geeqie
   3  * (C) 2004 John Ellis
   4  * Copyright (C) 2008 - 2012 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         guint idle_id; /* event source 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_CHECK_VERSION(2,20,0)
  65         if (gtk_widget_is_drawable(phd->drawing_area))
  66 #else
  67         if (GTK_WIDGET_DRAWABLE(phd->drawing_area))
  68 #endif
  69                 {
  70                 if (!phd->idle_id)
  71                         {
  72                         phd->idle_id = g_idle_add_full(G_PRIORITY_DEFAULT_IDLE, bar_pane_histogram_update_cb, phd, NULL);
  73                         }
  74                 }
  75         else
  76                 {
  77                 phd->need_update = TRUE;
  78                 }
  79 }
  80
  81 static gboolean bar_pane_histogram_update_cb(gpointer data)
  82 {
  83         const HistMap *histmap;
  84         PaneHistogramData *phd = data;
  85
  86         phd->idle_id = 0;
  87         phd->need_update = FALSE;
  88
  89         gtk_widget_queue_draw_area(GTK_WIDGET(phd->drawing_area), 0, 0, phd->histogram_width, phd->histogram_height);
  90
  91         if (phd->fd == NULL) return FALSE;
  92         histmap = histmap_get(phd->fd);
  93
  94         if (!histmap)
  95                 {
  96                 histmap_start_idle(phd->fd);
  97                 return FALSE;
  98                 }
  99
 100         phd->pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, phd->histogram_width, phd->histogram_height);
 101         gdk_pixbuf_fill(phd->pixbuf, 0xffffffff);
 102         histogram_draw(phd->histogram, histmap, phd->pixbuf, 0, 0, phd->histogram_width, phd->histogram_height);
 103
 104         return FALSE;
 105 }
 106
 107
 108 static void bar_pane_histogram_set_fd(GtkWidget *pane, FileData *fd)
 109 {
 110         PaneHistogramData *phd;
 111
 112         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
 113         if (!phd) return;
 114
 115         file_data_unref(phd->fd);
 116         phd->fd = file_data_ref(fd);
 117
 118         bar_pane_histogram_update(phd);
 119 }
 120
 121 static void bar_pane_histogram_write_config(GtkWidget *pane, GString *outstr, gint indent)
 122 {
 123         PaneHistogramData *phd;
 124
 125         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
 126         if (!phd) return;
 127
 128         WRITE_NL(); WRITE_STRING("<pane_histogram ");
 129         write_char_option(outstr, indent, "id", phd->pane.id);
 130         write_char_option(outstr, indent, "title", gtk_label_get_text(GTK_LABEL(phd->pane.title)));
 131         WRITE_BOOL(phd->pane, expanded);
 132         WRITE_INT(*phd->histogram, histogram_channel);
 133         WRITE_INT(*phd->histogram, histogram_mode);
 134         WRITE_STRING("/>");
 135 }
 136
 137 static void bar_pane_histogram_notify_cb(FileData *fd, NotifyType type, gpointer data)
 138 {
 139         PaneHistogramData *phd = data;
 140         if ((type & (NOTIFY_REREAD | NOTIFY_CHANGE | NOTIFY_HISTMAP | NOTIFY_PIXBUF)) && fd == phd->fd)
 141                 {
 142                 DEBUG_1("Notify pane_histogram: %s %04x", fd->path, type);
 143                 bar_pane_histogram_update(phd);
 144                 }
 145 }
 146
 147 #if GTK_CHECK_VERSION(3,0,0)
 148 static gboolean bar_pane_histogram_draw_cb(GtkWidget *widget, cairo_t *cr, gpointer data)
 149 {
 150         PaneHistogramData *phd = data;
 151         if (!phd) return TRUE;
 152
 153         if (phd->need_update)
 154                 {
 155                 bar_pane_histogram_update(phd);
 156                 }
 157
 158         if (!phd->pixbuf) return TRUE;
 159
 160         gdk_cairo_set_source_pixbuf(cr, phd->pixbuf, 0, 0);
 161         cairo_paint (cr);
 162
 163         return TRUE;
 164 }
 165
 166 #else
 167 static gboolean bar_pane_histogram_expose_event_cb(GtkWidget *widget, GdkEventExpose *event, gpointer data)
 168 {
 169         PaneHistogramData *phd = data;
 170         if (!phd) return TRUE;
 171
 172         if (phd->need_update)
 173                 {
 174                 bar_pane_histogram_update(phd);
 175                 }
 176
 177         if (!phd->pixbuf) return TRUE;
 178
 179         cairo_t *cr = gdk_cairo_create(gtk_widget_get_window(widget));
 180         gdk_cairo_set_source_pixbuf (cr, phd->pixbuf, 0, 0);
 181         cairo_paint (cr);
 182         cairo_destroy (cr);
 183
 184         return TRUE;
 185 }
 186 #endif
 187
 188 static void bar_pane_histogram_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data)
 189 {
 190         PaneHistogramData *phd = data;
 191
 192         phd->histogram_width = allocation->width;
 193         phd->histogram_height = allocation->height;
 194         bar_pane_histogram_update(phd);
 195 }
 196
 197 #if 0
 198 static void bar_pane_histogram_close(GtkWidget *pane)
 199 {
 200         PaneHistogramData *phd;
 201
 202         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
 203         if (!phd) return;
 204
 205         gtk_widget_destroy(phd->widget);
 206 }
 207 #endif
 208
 209 static void bar_pane_histogram_destroy(GtkWidget *widget, gpointer data)
 210 {
 211         PaneHistogramData *phd = data;
 212
 213         if (phd->idle_id) g_source_remove(phd->idle_id);
 214         file_data_unregister_notify_func(bar_pane_histogram_notify_cb, phd);
 215
 216         file_data_unref(phd->fd);
 217         histogram_free(phd->histogram);
 218         if (phd->pixbuf) g_object_unref(phd->pixbuf);
 219         g_free(phd->pane.id);
 220
 221         g_free(phd);
 222 }
 223
 224 static void bar_pane_histogram_popup_channels_cb(GtkWidget *widget, gpointer data)
 225 {
 226         PaneHistogramData *phd = data;
 227         gint channel;
 228
 229         if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(widget))) return;
 230
 231         if (!phd) return;
 232
 233         channel = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(widget), "menu_item_radio_data"));
 234         if (channel == histogram_get_channel(phd->histogram)) return;
 235
 236         histogram_set_channel(phd->histogram, channel);
 237         bar_pane_histogram_update(phd);
 238 }
 239
 240 static void bar_pane_histogram_popup_mode_cb(GtkWidget *widget, gpointer data)
 241 {
 242         PaneHistogramData *phd = data;
 243         gint logmode;
 244
 245         if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(widget))) return;
 246
 247         if (!phd) return;
 248
 249         logmode = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(widget), "menu_item_radio_data"));
 250         if (logmode == histogram_get_mode(phd->histogram)) return;
 251
 252         histogram_set_mode(phd->histogram, logmode);
 253         bar_pane_histogram_update(phd);
 254 }
 255
 256 static GtkWidget *bar_pane_histogram_menu(PaneHistogramData *phd)
 257 {
 258         GtkWidget *menu;
 259         gint channel = histogram_get_channel(phd->histogram);
 260         gint mode = histogram_get_mode(phd->histogram);
 261
 262         menu = popup_menu_short_lived();
 263
 264         /* use the same strings as in layout_util.c */
 265         menu_item_add_radio(menu, _("Histogram on _Red"),   GINT_TO_POINTER(HCHAN_R), (channel == HCHAN_R), G_CALLBACK(bar_pane_histogram_popup_channels_cb), phd);
 266         menu_item_add_radio(menu, _("Histogram on _Green"), GINT_TO_POINTER(HCHAN_G), (channel == HCHAN_G), G_CALLBACK(bar_pane_histogram_popup_channels_cb), phd);
 267         menu_item_add_radio(menu, _("Histogram on _Blue"),  GINT_TO_POINTER(HCHAN_B), (channel == HCHAN_B), G_CALLBACK(bar_pane_histogram_popup_channels_cb), phd);
 268         menu_item_add_radio(menu, _("_Histogram on RGB"),   GINT_TO_POINTER(HCHAN_RGB), (channel == HCHAN_RGB), G_CALLBACK(bar_pane_histogram_popup_channels_cb), phd);
 269         menu_item_add_radio(menu, _("Histogram on _Value"), GINT_TO_POINTER(HCHAN_MAX), (channel == HCHAN_MAX), G_CALLBACK(bar_pane_histogram_popup_channels_cb), phd);
 270
 271         menu_item_add_divider(menu);
 272
 273         menu_item_add_radio(menu, _("Li_near Histogram"), GINT_TO_POINTER(0), (mode == 0), G_CALLBACK(bar_pane_histogram_popup_mode_cb), phd);
 274         menu_item_add_radio(menu, _("L_og Histogram"),    GINT_TO_POINTER(1), (mode == 1), G_CALLBACK(bar_pane_histogram_popup_mode_cb), phd);
 275
 276         return menu;
 277 }
 278
 279 static gboolean bar_pane_histogram_press_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
 280 {
 281         PaneHistogramData *phd = data;
 282
 283         if (bevent->button == MOUSE_BUTTON_RIGHT)
 284                 {
 285                 GtkWidget *menu;
 286
 287                 menu = bar_pane_histogram_menu(phd);
 288                 gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL, bevent->button, bevent->time);
 289                 return TRUE;
 290         }
 291
 292         return FALSE;
 293 }
 294
 295
 296 static GtkWidget *bar_pane_histogram_new(const gchar *id, const gchar *title, gint height, gboolean expanded, gint histogram_channel, gint histogram_mode)
 297 {
 298         PaneHistogramData *phd;
 299
 300         phd = g_new0(PaneHistogramData, 1);
 301
 302         phd->pane.pane_set_fd = bar_pane_histogram_set_fd;
 303         phd->pane.pane_write_config = bar_pane_histogram_write_config;
 304         phd->pane.title = bar_pane_expander_title(title);
 305         phd->pane.id = g_strdup(id);
 306         phd->pane.type = PANE_HISTOGRAM;
 307
 308         phd->pane.expanded = expanded;
 309
 310         phd->histogram = histogram_new();
 311
 312         histogram_set_channel(phd->histogram, histogram_channel);
 313         histogram_set_mode(phd->histogram, histogram_mode);
 314
 315         phd->widget = gtk_vbox_new(FALSE, PREF_PAD_GAP);
 316
 317         g_object_set_data(G_OBJECT(phd->widget), "pane_data", phd);
 318         g_signal_connect(G_OBJECT(phd->widget), "destroy",
 319                          G_CALLBACK(bar_pane_histogram_destroy), phd);
 320
 321
 322         gtk_widget_set_size_request(GTK_WIDGET(phd->widget), -1, height);
 323
 324         phd->drawing_area = gtk_drawing_area_new();
 325         g_signal_connect_after(G_OBJECT(phd->drawing_area), "size_allocate",
 326                                G_CALLBACK(bar_pane_histogram_size_cb), phd);
 327
 328 #if GTK_CHECK_VERSION(3,0,0)
 329         g_signal_connect(G_OBJECT(phd->drawing_area), "draw",
 330                          G_CALLBACK(bar_pane_histogram_draw_cb), phd);
 331 #else
 332         g_signal_connect(G_OBJECT(phd->drawing_area), "expose_event",
 333                          G_CALLBACK(bar_pane_histogram_expose_event_cb), phd);
 334 #endif
 335
 336         gtk_box_pack_start(GTK_BOX(phd->widget), phd->drawing_area, TRUE, TRUE, 0);
 337         gtk_widget_show(phd->drawing_area);
 338         gtk_widget_add_events(phd->drawing_area, GDK_BUTTON_PRESS_MASK);
 339
 340         g_signal_connect(G_OBJECT(phd->drawing_area), "button_press_event", G_CALLBACK(bar_pane_histogram_press_cb), phd);
 341
 342         gtk_widget_show(phd->widget);
 343
 344         file_data_register_notify_func(bar_pane_histogram_notify_cb, phd, NOTIFY_PRIORITY_LOW);
 345
 346         return phd->widget;
 347 }
 348
 349 GtkWidget *bar_pane_histogram_new_from_config(const gchar **attribute_names, const gchar **attribute_values)
 350 {
 351         gchar *title = NULL;
 352         gchar *id = g_strdup("histogram");
 353         gboolean expanded = TRUE;
 354         gint height = 80;
 355         gint histogram_channel = HCHAN_RGB;
 356         gint histogram_mode = 0;
 357         GtkWidget *ret;
 358
 359         while (*attribute_names)
 360                 {
 361                 const gchar *option = *attribute_names++;
 362                 const gchar *value = *attribute_values++;
 363
 364                 if (READ_CHAR_FULL("id", id)) continue;
 365                 if (READ_CHAR_FULL("title", title)) continue;
 366                 if (READ_BOOL_FULL("expanded", expanded)) continue;
 367                 if (READ_INT_FULL("histogram_channel", histogram_channel)) continue;
 368                 if (READ_INT_FULL("histogram_mode", histogram_mode)) continue;
 369
 370                 log_printf("unknown attribute %s = %s\n", option, value);
 371                 }
 372
 373         bar_pane_translate_title(PANE_HISTOGRAM, id, &title);
 374         ret = bar_pane_histogram_new(id, title, height, expanded, histogram_channel, histogram_mode);
 375         g_free(title);
 376         g_free(id);
 377         return ret;
 378 }
 379
 380 void bar_pane_histogram_update_from_config(GtkWidget *pane, const gchar **attribute_names, const gchar **attribute_values)
 381 {
 382         PaneHistogramData *phd;
 383
 384         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
 385         if (!phd) return;
 386
 387         gint histogram_channel = phd->histogram->histogram_channel;
 388         gint histogram_mode = phd->histogram->histogram_mode;
 389
 390         while (*attribute_names)
 391                 {
 392                 const gchar *option = *attribute_names++;
 393                 const gchar *value = *attribute_values++;
 394
 395                 if (READ_CHAR_FULL("id", phd->pane.id)) continue;
 396 //              if (READ_CHAR_FULL("pane.title", title)) continue;
 397                 if (READ_BOOL_FULL("expanded", phd->pane.expanded)) continue;
 398                 if (READ_INT_FULL("histogram_channel", histogram_channel)) continue;
 399                 if (READ_INT_FULL("histogram_mode", histogram_mode)) continue;
 400
 401
 402                 log_printf("unknown attribute %s = %s\n", option, value);
 403                 }
 404
 405         histogram_set_channel(phd->histogram, histogram_channel);
 406         histogram_set_mode(phd->histogram, histogram_mode);
 407
 408         bar_update_expander(pane);
 409         bar_pane_histogram_update(phd);
 410 }
 411
 412
 413 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */