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