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         gint histogram_channel;
  44         gint histogram_logmode;
  45         GdkPixbuf *pixbuf;
  46         FileData *fd;
  47 };
  48
  49
  50 static void bar_pane_histogram_update(PaneHistogramData *phd)
  51 {
  52         const HistMap *histmap;
  53         if (phd->pixbuf) g_object_unref(phd->pixbuf);
  54         phd->pixbuf = NULL;
  55
  56         if (!phd->histogram_width || !phd->histogram_height || !phd->fd) return;
  57
  58         gtk_widget_queue_draw_area(GTK_WIDGET(phd->drawing_area), 0, 0, phd->histogram_width, phd->histogram_height);
  59
  60         histmap = histmap_get(phd->fd);
  61
  62         if (!histmap) return;
  63
  64         phd->pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, phd->histogram_width, phd->histogram_height);
  65         gdk_pixbuf_fill(phd->pixbuf, 0xffffffff);
  66         histogram_draw(phd->histogram, histmap, phd->pixbuf, 0, 0, phd->histogram_width, phd->histogram_height);
  67 }
  68
  69
  70 static void bar_pane_histogram_set_fd(GtkWidget *pane, FileData *fd)
  71 {
  72         PaneHistogramData *phd;
  73
  74         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
  75         if (!phd) return;
  76
  77         file_data_unref(phd->fd);
  78         phd->fd = file_data_ref(fd);
  79
  80         bar_pane_histogram_update(phd);
  81 }
  82
  83 static void bar_pane_histogram_write_config(GtkWidget *pane, GString *outstr, gint indent)
  84 {
  85         PaneHistogramData *phd;
  86
  87         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
  88         if (!phd) return;
  89
  90         WRITE_STRING("<pane_histogram\n");
  91         indent++;
  92         WRITE_CHAR(*phd, pane.title);
  93         WRITE_BOOL(*phd, pane.expanded);
  94         WRITE_INT(*phd, histogram_channel);
  95         WRITE_INT(*phd, histogram_logmode);
  96         indent--;
  97         WRITE_STRING("/>\n");
  98 }
  99
 100
 101 static void bar_pane_histogram_notify_cb(FileData *fd, NotifyType type, gpointer data)
 102 {
 103         PaneHistogramData *phd = data;
 104         if (fd == phd->fd) bar_pane_histogram_update(phd);
 105 }
 106
 107 static gboolean bar_pane_histogram_expose_event_cb (GtkWidget *widget, GdkEventExpose *event, gpointer data)
 108 {
 109         PaneHistogramData *phd = data;
 110         if (!phd || !phd->pixbuf) return TRUE;
 111
 112         gdk_draw_pixbuf(widget->window,
 113                         widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
 114                         phd->pixbuf,
 115                         0, 0,
 116                         0, 0,
 117                         -1, -1,
 118                         GDK_RGB_DITHER_NORMAL, 0, 0);
 119         return TRUE;
 120 }
 121
 122 static void bar_pane_histogram_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data)
 123 {
 124         PaneHistogramData *phd = data;
 125
 126         phd->histogram_width = allocation->width;
 127         phd->histogram_height = allocation->height;
 128         bar_pane_histogram_update(phd);
 129 }
 130
 131 static void bar_pane_histogram_close(GtkWidget *pane)
 132 {
 133         PaneHistogramData *phd;
 134
 135         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
 136         if (!phd) return;
 137
 138         gtk_widget_destroy(phd->widget);
 139 }
 140
 141 static void bar_pane_histogram_destroy(GtkWidget *widget, gpointer data)
 142 {
 143         PaneHistogramData *phd = data;
 144
 145         file_data_unregister_notify_func(bar_pane_histogram_notify_cb, phd);
 146
 147         file_data_unref(phd->fd);
 148         g_free(phd->pane.title);
 149         histogram_free(phd->histogram);
 150         if (phd->pixbuf) g_object_unref(phd->pixbuf);
 151
 152         g_free(phd);
 153 }
 154
 155 static void bar_pane_histogram_popup_channels_cb(GtkWidget *widget, gpointer data)
 156 {
 157         PaneHistogramData *phd;
 158         gint channel;
 159
 160         if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(widget))) return;
 161
 162         phd = submenu_item_get_data(widget);
 163
 164         if (!phd) return;
 165
 166         channel = GPOINTER_TO_INT(data);
 167         if (channel == histogram_get_channel(phd->histogram)) return;
 168
 169         histogram_set_channel(phd->histogram, channel);
 170         phd->histogram_channel = channel;
 171         bar_pane_histogram_update(phd);
 172 }
 173
 174 static void bar_pane_histogram_popup_logmode_cb(GtkWidget *widget, gpointer data)
 175 {
 176         PaneHistogramData *phd;
 177         gint logmode;
 178
 179         if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(widget))) return;
 180
 181         phd = submenu_item_get_data(widget);
 182
 183         if (!phd) return;
 184
 185         logmode = GPOINTER_TO_INT(data);
 186         if (logmode == histogram_get_mode(phd->histogram)) return;
 187
 188         histogram_set_mode(phd->histogram, logmode);
 189         phd->histogram_logmode = logmode;
 190         bar_pane_histogram_update(phd);
 191 }
 192
 193 static GtkWidget *bar_pane_histogram_add_radio(GtkWidget *menu, GtkWidget *parent,
 194                                         const gchar *label,
 195                                         GCallback func, gint value,
 196                                         gboolean show_current, gint current_value)
 197 {
 198         GtkWidget *item;
 199
 200         if (show_current)
 201                 {
 202                 item = menu_item_add_radio(menu, parent,
 203                                            label, (value == current_value),
 204                                            func, GINT_TO_POINTER((gint)value));
 205                 }
 206         else
 207                 {
 208                 item = menu_item_add(menu, label,
 209                                      func, GINT_TO_POINTER((gint)value));
 210                 }
 211
 212         return item;
 213 }
 214
 215 GtkWidget *bar_pane_histogram_add_channels(GtkWidget *menu, GCallback func, gpointer data,
 216                                            gboolean show_current, gint current_value)
 217 {
 218         GtkWidget *submenu;
 219         GtkWidget *parent;
 220
 221         submenu = gtk_menu_new();
 222         g_object_set_data(G_OBJECT(submenu), "submenu_data", data);
 223
 224         parent = bar_pane_histogram_add_radio(submenu, NULL, _("_Red"), func, HCHAN_R, show_current, current_value);
 225         bar_pane_histogram_add_radio(submenu, parent, _("_Green"), func, HCHAN_G, show_current, current_value);
 226         bar_pane_histogram_add_radio(submenu, parent, _("_Blue"),func, HCHAN_B, show_current, current_value);
 227         bar_pane_histogram_add_radio(submenu, parent, _("_RGB"),func, HCHAN_RGB, show_current, current_value);
 228         bar_pane_histogram_add_radio(submenu, parent, _("_Value"),func, HCHAN_MAX, show_current, current_value);
 229
 230         if (menu)
 231                 {
 232                 GtkWidget *item;
 233
 234                 item = menu_item_add(menu, _("Channels"), NULL, NULL);
 235                 gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), submenu);
 236                 return item;
 237                 }
 238
 239         return submenu;
 240 }
 241 GtkWidget *bar_pane_histogram_add_logmode(GtkWidget *menu, GCallback func, gpointer data,
 242                                            gboolean show_current, gint current_value)
 243 {
 244         GtkWidget *submenu;
 245         GtkWidget *parent;
 246
 247         submenu = gtk_menu_new();
 248         g_object_set_data(G_OBJECT(submenu), "submenu_data", data);
 249
 250         parent = bar_pane_histogram_add_radio(submenu, NULL, _("_Linear"), func, 0, show_current, current_value);
 251         bar_pane_histogram_add_radio(submenu, parent, _("Lo_garithmical"), func, 1, show_current, current_value);
 252
 253         if (menu)
 254                 {
 255                 GtkWidget *item;
 256
 257                 item = menu_item_add(menu, _("Mode"), NULL, NULL);
 258                 gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), submenu);
 259                 return item;
 260                 }
 261
 262         return submenu;
 263 }
 264
 265
 266 static GtkWidget *bar_pane_histogram_menu(PaneHistogramData *phd)
 267 {
 268         GtkWidget *menu;
 269         static gboolean show_current = TRUE;
 270
 271         menu = popup_menu_short_lived();
 272         bar_pane_histogram_add_channels(menu, G_CALLBACK(bar_pane_histogram_popup_channels_cb), phd,
 273                                         show_current, histogram_get_channel(phd->histogram));
 274         bar_pane_histogram_add_logmode(menu, G_CALLBACK(bar_pane_histogram_popup_logmode_cb), phd,
 275                                        show_current, histogram_get_mode(phd->histogram));
 276
 277         return menu;
 278 }
 279
 280 static gboolean bar_pane_histogram_press_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
 281 {
 282         PaneHistogramData *phd = data;
 283
 284         if (bevent->button == MOUSE_BUTTON_RIGHT)
 285                 {
 286                 GtkWidget *menu;
 287
 288                 menu = bar_pane_histogram_menu(phd);
 289                 gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL, bevent->button, bevent->time);
 290                 return TRUE;
 291         }
 292
 293         return FALSE;
 294 }
 295
 296
 297 GtkWidget *bar_pane_histogram_new(const gchar *title, gint height, gint expanded, gint histogram_channel, gint histogram_logmode)
 298 {
 299         PaneHistogramData *phd;
 300
 301         phd = g_new0(PaneHistogramData, 1);
 302
 303         phd->pane.pane_set_fd = bar_pane_histogram_set_fd;
 304         phd->pane.pane_write_config = bar_pane_histogram_write_config;
 305         phd->pane.title = g_strdup(title);
 306         phd->pane.expanded = expanded;
 307
 308         phd->histogram = histogram_new();
 309
 310         histogram_set_channel(phd->histogram, histogram_channel);
 311         histogram_set_mode(phd->histogram, histogram_logmode);
 312
 313         phd->widget = gtk_vbox_new(FALSE, PREF_PAD_GAP);
 314
 315         g_object_set_data(G_OBJECT(phd->widget), "pane_data", phd);
 316         g_signal_connect(G_OBJECT(phd->widget), "destroy",
 317                          G_CALLBACK(bar_pane_histogram_destroy), phd);
 318
 319
 320         gtk_widget_set_size_request(GTK_WIDGET(phd->widget), -1, height);
 321
 322         phd->drawing_area = gtk_drawing_area_new();
 323         g_signal_connect_after(G_OBJECT(phd->drawing_area), "size_allocate",
 324                                G_CALLBACK(bar_pane_histogram_size_cb), phd);
 325
 326         g_signal_connect(G_OBJECT(phd->drawing_area), "expose_event",
 327                          G_CALLBACK(bar_pane_histogram_expose_event_cb), phd);
 328
 329         gtk_box_pack_start(GTK_BOX(phd->widget), phd->drawing_area, TRUE, TRUE, 0);
 330         gtk_widget_show(phd->drawing_area);
 331         gtk_widget_add_events(phd->drawing_area, GDK_BUTTON_PRESS_MASK);
 332
 333         g_signal_connect(G_OBJECT(phd->drawing_area), "button_press_event", G_CALLBACK(bar_pane_histogram_press_cb), phd);
 334
 335         gtk_widget_show(phd->widget);
 336
 337         file_data_register_notify_func(bar_pane_histogram_notify_cb, phd, NOTIFY_PRIORITY_LOW);
 338
 339         return phd->widget;
 340 }
 341
 342 GtkWidget *bar_pane_histogram_new_from_config(const gchar **attribute_names, const gchar **attribute_values)
 343 {
 344         gchar *title = g_strdup(_("NoName"));
 345         gboolean expanded = TRUE;
 346         gint height = 80;
 347         gint histogram_channel = HCHAN_RGB;
 348         gint histogram_logmode = 0;
 349
 350         while (*attribute_names)
 351                 {
 352                 const gchar *option = *attribute_names++;
 353                 const gchar *value = *attribute_values++;
 354
 355                 if (READ_CHAR_FULL("pane.title", title)) continue;
 356                 if (READ_BOOL_FULL("pane.expanded", expanded)) continue;
 357                 if (READ_INT_FULL("histogram_channel", histogram_channel)) continue;
 358                 if (READ_INT_FULL("histogram_logmode", histogram_logmode)) continue;
 359
 360
 361                 DEBUG_1("unknown attribute %s = %s", option, value);
 362                 }
 363
 364         return bar_pane_histogram_new(title, height, expanded, histogram_channel, histogram_logmode);
 365 }
 366
 367
 368 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */