2 * Copyright (C) 2004 John Ellis
3 * Copyright (C) 2008 - 2016 The Geeqie Team
5 * Author: Vladimir Nadvornik
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23 #include "bar_histogram.h"
31 #include "histogram.h"
35 *-------------------------------------------------------------------
36 * keyword / comment utils
37 *-------------------------------------------------------------------
42 typedef struct _PaneHistogramData PaneHistogramData;
43 struct _PaneHistogramData
47 GtkWidget *drawing_area;
50 gint histogram_height;
54 guint idle_id; /* event source id */
57 static gboolean bar_pane_histogram_update_cb(gpointer data);
60 static void bar_pane_histogram_update(PaneHistogramData *phd)
62 if (phd->pixbuf) g_object_unref(phd->pixbuf);
65 gtk_label_set_text(GTK_LABEL(phd->pane.title), histogram_label(phd->histogram));
67 if (!phd->histogram_width || !phd->histogram_height || !phd->fd) return;
69 /** histmap_get is relatively expensive, run it only when we really need it
70 and with lower priority than pixbuf_renderer
71 @FIXME this does not work for fullscreen */
72 if (gtk_widget_is_drawable(phd->drawing_area))
76 phd->idle_id = g_idle_add_full(G_PRIORITY_DEFAULT_IDLE, bar_pane_histogram_update_cb, phd, NULL);
81 phd->need_update = TRUE;
85 static gboolean bar_pane_histogram_update_cb(gpointer data)
87 const HistMap *histmap;
88 PaneHistogramData *phd = data;
91 phd->need_update = FALSE;
93 gtk_widget_queue_draw_area(GTK_WIDGET(phd->drawing_area), 0, 0, phd->histogram_width, phd->histogram_height);
95 if (phd->fd == NULL) return FALSE;
96 histmap = histmap_get(phd->fd);
100 histmap_start_idle(phd->fd);
104 phd->pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, phd->histogram_width, phd->histogram_height);
105 gdk_pixbuf_fill(phd->pixbuf, 0xffffffff);
106 histogram_draw(phd->histogram, histmap, phd->pixbuf, 0, 0, phd->histogram_width, phd->histogram_height);
112 static void bar_pane_histogram_set_fd(GtkWidget *pane, FileData *fd)
114 PaneHistogramData *phd;
116 phd = g_object_get_data(G_OBJECT(pane), "pane_data");
119 file_data_unref(phd->fd);
120 phd->fd = file_data_ref(fd);
122 bar_pane_histogram_update(phd);
125 static void bar_pane_histogram_write_config(GtkWidget *pane, GString *outstr, gint indent)
127 PaneHistogramData *phd;
129 phd = g_object_get_data(G_OBJECT(pane), "pane_data");
132 WRITE_NL(); WRITE_STRING("<pane_histogram ");
133 write_char_option(outstr, indent, "id", phd->pane.id);
134 write_char_option(outstr, indent, "title", gtk_label_get_text(GTK_LABEL(phd->pane.title)));
135 WRITE_BOOL(phd->pane, expanded);
136 WRITE_INT(*phd->histogram, histogram_channel);
137 WRITE_INT(*phd->histogram, histogram_mode);
141 static void bar_pane_histogram_notify_cb(FileData *fd, NotifyType type, gpointer data)
143 PaneHistogramData *phd = data;
144 if ((type & (NOTIFY_REREAD | NOTIFY_CHANGE | NOTIFY_HISTMAP | NOTIFY_PIXBUF)) && fd == phd->fd)
146 DEBUG_1("Notify pane_histogram: %s %04x", fd->path, type);
147 bar_pane_histogram_update(phd);
151 #if GTK_CHECK_VERSION(3,0,0)
152 static gboolean bar_pane_histogram_draw_cb(GtkWidget *widget, cairo_t *cr, gpointer data)
154 PaneHistogramData *phd = data;
155 if (!phd) return TRUE;
157 if (phd->need_update)
159 bar_pane_histogram_update(phd);
162 if (!phd->pixbuf) return TRUE;
164 gdk_cairo_set_source_pixbuf(cr, phd->pixbuf, 0, 0);
171 static gboolean bar_pane_histogram_expose_event_cb(GtkWidget *widget, GdkEventExpose *event, gpointer data)
173 PaneHistogramData *phd = data;
174 if (!phd) return TRUE;
176 if (phd->need_update)
178 bar_pane_histogram_update(phd);
181 if (!phd->pixbuf) return TRUE;
183 cairo_t *cr = gdk_cairo_create(gtk_widget_get_window(widget));
184 gdk_cairo_set_source_pixbuf (cr, phd->pixbuf, 0, 0);
192 static void bar_pane_histogram_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data)
194 PaneHistogramData *phd = data;
196 phd->histogram_width = allocation->width;
197 phd->histogram_height = allocation->height;
198 bar_pane_histogram_update(phd);
201 static void bar_pane_histogram_destroy(GtkWidget *widget, gpointer data)
203 PaneHistogramData *phd = data;
205 if (phd->idle_id) g_source_remove(phd->idle_id);
206 file_data_unregister_notify_func(bar_pane_histogram_notify_cb, phd);
208 file_data_unref(phd->fd);
209 histogram_free(phd->histogram);
210 if (phd->pixbuf) g_object_unref(phd->pixbuf);
211 g_free(phd->pane.id);
216 static void bar_pane_histogram_popup_channels_cb(GtkWidget *widget, gpointer data)
218 PaneHistogramData *phd = data;
221 if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(widget))) return;
225 channel = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(widget), "menu_item_radio_data"));
226 if (channel == histogram_get_channel(phd->histogram)) return;
228 histogram_set_channel(phd->histogram, channel);
229 bar_pane_histogram_update(phd);
232 static void bar_pane_histogram_popup_mode_cb(GtkWidget *widget, gpointer data)
234 PaneHistogramData *phd = data;
237 if (!gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(widget))) return;
241 logmode = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(widget), "menu_item_radio_data"));
242 if (logmode == histogram_get_mode(phd->histogram)) return;
244 histogram_set_mode(phd->histogram, logmode);
245 bar_pane_histogram_update(phd);
248 static GtkWidget *bar_pane_histogram_menu(PaneHistogramData *phd)
251 gint channel = histogram_get_channel(phd->histogram);
252 gint mode = histogram_get_mode(phd->histogram);
254 menu = popup_menu_short_lived();
256 /* use the same strings as in layout_util.c */
257 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);
258 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);
259 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);
260 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);
261 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);
263 menu_item_add_divider(menu);
265 menu_item_add_radio(menu, _("Li_near Histogram"), GINT_TO_POINTER(0), (mode == 0), G_CALLBACK(bar_pane_histogram_popup_mode_cb), phd);
266 menu_item_add_radio(menu, _("L_og Histogram"), GINT_TO_POINTER(1), (mode == 1), G_CALLBACK(bar_pane_histogram_popup_mode_cb), phd);
271 static gboolean bar_pane_histogram_press_cb(GtkWidget *widget, GdkEventButton *bevent, gpointer data)
273 PaneHistogramData *phd = data;
275 if (bevent->button == MOUSE_BUTTON_RIGHT)
279 menu = bar_pane_histogram_menu(phd);
280 gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL, bevent->button, bevent->time);
288 static GtkWidget *bar_pane_histogram_new(const gchar *id, const gchar *title, gint height, gboolean expanded, gint histogram_channel, gint histogram_mode)
290 PaneHistogramData *phd;
292 phd = g_new0(PaneHistogramData, 1);
294 phd->pane.pane_set_fd = bar_pane_histogram_set_fd;
295 phd->pane.pane_write_config = bar_pane_histogram_write_config;
296 phd->pane.title = bar_pane_expander_title(title);
297 phd->pane.id = g_strdup(id);
298 phd->pane.type = PANE_HISTOGRAM;
300 phd->pane.expanded = expanded;
302 phd->histogram = histogram_new();
304 histogram_set_channel(phd->histogram, histogram_channel);
305 histogram_set_mode(phd->histogram, histogram_mode);
307 phd->widget = gtk_vbox_new(FALSE, PREF_PAD_GAP);
309 g_object_set_data(G_OBJECT(phd->widget), "pane_data", phd);
310 g_signal_connect(G_OBJECT(phd->widget), "destroy",
311 G_CALLBACK(bar_pane_histogram_destroy), phd);
314 gtk_widget_set_size_request(GTK_WIDGET(phd->widget), -1, height);
316 phd->drawing_area = gtk_drawing_area_new();
317 g_signal_connect_after(G_OBJECT(phd->drawing_area), "size_allocate",
318 G_CALLBACK(bar_pane_histogram_size_cb), phd);
320 #if GTK_CHECK_VERSION(3,0,0)
321 g_signal_connect(G_OBJECT(phd->drawing_area), "draw",
322 G_CALLBACK(bar_pane_histogram_draw_cb), phd);
324 g_signal_connect(G_OBJECT(phd->drawing_area), "expose_event",
325 G_CALLBACK(bar_pane_histogram_expose_event_cb), phd);
328 gtk_box_pack_start(GTK_BOX(phd->widget), phd->drawing_area, TRUE, TRUE, 0);
329 gtk_widget_show(phd->drawing_area);
330 gtk_widget_add_events(phd->drawing_area, GDK_BUTTON_PRESS_MASK);
332 g_signal_connect(G_OBJECT(phd->drawing_area), "button_press_event", G_CALLBACK(bar_pane_histogram_press_cb), phd);
334 gtk_widget_show(phd->widget);
336 file_data_register_notify_func(bar_pane_histogram_notify_cb, phd, NOTIFY_PRIORITY_LOW);
341 GtkWidget *bar_pane_histogram_new_from_config(const gchar **attribute_names, const gchar **attribute_values)
344 gchar *id = g_strdup("histogram");
345 gboolean expanded = TRUE;
347 gint histogram_channel = HCHAN_RGB;
348 gint histogram_mode = 0;
351 while (*attribute_names)
353 const gchar *option = *attribute_names++;
354 const gchar *value = *attribute_values++;
356 if (READ_CHAR_FULL("id", id)) continue;
357 if (READ_CHAR_FULL("title", title)) continue;
358 if (READ_BOOL_FULL("expanded", expanded)) continue;
359 if (READ_INT_FULL("histogram_channel", histogram_channel)) continue;
360 if (READ_INT_FULL("histogram_mode", histogram_mode)) continue;
362 log_printf("unknown attribute %s = %s\n", option, value);
365 bar_pane_translate_title(PANE_HISTOGRAM, id, &title);
366 ret = bar_pane_histogram_new(id, title, height, expanded, histogram_channel, histogram_mode);
372 void bar_pane_histogram_update_from_config(GtkWidget *pane, const gchar **attribute_names, const gchar **attribute_values)
374 PaneHistogramData *phd;
376 phd = g_object_get_data(G_OBJECT(pane), "pane_data");
379 gint histogram_channel = phd->histogram->histogram_channel;
380 gint histogram_mode = phd->histogram->histogram_mode;
382 while (*attribute_names)
384 const gchar *option = *attribute_names++;
385 const gchar *value = *attribute_values++;
387 if (READ_CHAR_FULL("id", phd->pane.id)) continue;
388 // if (READ_CHAR_FULL("pane.title", title)) continue;
389 if (READ_BOOL_FULL("expanded", phd->pane.expanded)) continue;
390 if (READ_INT_FULL("histogram_channel", histogram_channel)) continue;
391 if (READ_INT_FULL("histogram_mode", histogram_mode)) continue;
394 log_printf("unknown attribute %s = %s\n", option, value);
397 histogram_set_channel(phd->histogram, histogram_channel);
398 histogram_set_mode(phd->histogram, histogram_mode);
400 bar_update_expander(pane);
401 bar_pane_histogram_update(phd);
405 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */