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 "ui_menu.h"
  21 #include "ui_misc.h"
  22 #include "histogram.h"
  23 #include "rcfile.h"
  24
  25 /*
  26  *-------------------------------------------------------------------
  27  * keyword / comment utils
  28  *-------------------------------------------------------------------
  29  */
  30
  31
  32
  33 typedef struct _PaneHistogramData PaneHistogramData;
  34 struct _PaneHistogramData
  35 {
  36         PaneData pane;
  37         GtkWidget *widget;
  38         GtkWidget *drawing_area;
  39         Histogram *histogram;
  40         gint histogram_width;
  41         gint histogram_height;
  42         GdkPixbuf *pixbuf;
  43         FileData *fd;
  44 };
  45
  46
  47 static void bar_pane_histogram_update(PaneHistogramData *phd)
  48 {
  49         const HistMap *histmap;
  50         if (phd->pixbuf) g_object_unref(phd->pixbuf);
  51         phd->pixbuf = NULL;
  52
  53         if (!phd->histogram_width || !phd->histogram_height || !phd->fd) return;
  54
  55         gtk_widget_queue_draw_area(GTK_WIDGET(phd->drawing_area), 0, 0, phd->histogram_width, phd->histogram_height);
  56
  57         histmap = histmap_get(phd->fd);
  58
  59         if (!histmap) return;
  60
  61         phd->pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, phd->histogram_width, phd->histogram_height);
  62         gdk_pixbuf_fill(phd->pixbuf, 0xffffffff);
  63         histogram_draw(phd->histogram, histmap, phd->pixbuf, 0, 0, phd->histogram_width, phd->histogram_height);
  64 }
  65
  66
  67 static void bar_pane_histogram_set_fd(GtkWidget *pane, FileData *fd)
  68 {
  69         PaneHistogramData *phd;
  70
  71         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
  72         if (!phd) return;
  73
  74         file_data_unref(phd->fd);
  75         phd->fd = file_data_ref(fd);
  76
  77         bar_pane_histogram_update(phd);
  78 }
  79
  80 static void bar_pane_histogram_write_config(GtkWidget *pane, GString *outstr, gint indent)
  81 {
  82         PaneHistogramData *phd;
  83
  84         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
  85         if (!phd) return;
  86
  87         write_indent(outstr, indent);
  88         g_string_append_printf(outstr, "<pane_histogram\n");
  89         indent++;
  90         WRITE_CHAR(*phd, pane.title);
  91         WRITE_BOOL(*phd, pane.expanded);
  92         indent--;
  93         write_indent(outstr, indent);
  94         g_string_append_printf(outstr, "/>\n");
  95 }
  96
  97
  98 static void bar_pane_histogram_notify_cb(FileData *fd, NotifyType type, gpointer data)
  99 {
 100         PaneHistogramData *phd = data;
 101         if (fd == phd->fd) bar_pane_histogram_update(phd);
 102 }
 103
 104 static gboolean bar_pane_histogram_expose_event_cb (GtkWidget *widget, GdkEventExpose *event, gpointer data)
 105 {
 106         PaneHistogramData *phd = data;
 107         if (!phd || !phd->pixbuf) return TRUE;
 108
 109         gdk_draw_pixbuf(widget->window,
 110                         widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
 111                         phd->pixbuf,
 112                         0, 0,
 113                         0, 0,
 114                         -1, -1,
 115                         GDK_RGB_DITHER_NORMAL, 0, 0);
 116         return TRUE;
 117 }
 118
 119 static void bar_pane_histogram_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data)
 120 {
 121         PaneHistogramData *phd = data;
 122
 123         phd->histogram_width = allocation->width;
 124         phd->histogram_height = allocation->height;
 125         bar_pane_histogram_update(phd);
 126 }
 127
 128 static void bar_pane_histogram_close(GtkWidget *pane)
 129 {
 130         PaneHistogramData *phd;
 131
 132         phd = g_object_get_data(G_OBJECT(pane), "pane_data");
 133         if (!phd) return;
 134
 135         gtk_widget_destroy(phd->widget);
 136 }
 137
 138 static void bar_pane_histogram_destroy(GtkWidget *widget, gpointer data)
 139 {
 140         PaneHistogramData *phd = data;
 141
 142         file_data_unregister_notify_func(bar_pane_histogram_notify_cb, phd);
 143
 144         file_data_unref(phd->fd);
 145         g_free(phd->pane.title);
 146         histogram_free(phd->histogram);
 147         if (phd->pixbuf) g_object_unref(phd->pixbuf);
 148
 149         g_free(phd);
 150 }
 151
 152
 153 GtkWidget *bar_pane_histogram_new(const gchar *title, gint height, gint expanded)
 154 {
 155         PaneHistogramData *phd;
 156
 157         phd = g_new0(PaneHistogramData, 1);
 158
 159         phd->pane.pane_set_fd = bar_pane_histogram_set_fd;
 160         phd->pane.pane_write_config = bar_pane_histogram_write_config;
 161         phd->pane.title = g_strdup(title);
 162         phd->pane.expanded = expanded;
 163
 164         phd->histogram = histogram_new();
 165
 166         phd->widget = gtk_vbox_new(FALSE, PREF_PAD_GAP);
 167
 168         g_object_set_data(G_OBJECT(phd->widget), "pane_data", phd);
 169         g_signal_connect(G_OBJECT(phd->widget), "destroy",
 170                          G_CALLBACK(bar_pane_histogram_destroy), phd);
 171
 172
 173         gtk_widget_set_size_request(GTK_WIDGET(phd->widget), -1, height);
 174
 175         phd->drawing_area = gtk_drawing_area_new();
 176         g_signal_connect_after(G_OBJECT(phd->drawing_area), "size_allocate",
 177                                G_CALLBACK(bar_pane_histogram_size_cb), phd);
 178
 179         g_signal_connect(G_OBJECT(phd->drawing_area), "expose_event",
 180                          G_CALLBACK(bar_pane_histogram_expose_event_cb), phd);
 181
 182         gtk_box_pack_start(GTK_BOX(phd->widget), phd->drawing_area, TRUE, TRUE, 0);
 183         gtk_widget_show(phd->drawing_area);
 184
 185
 186         gtk_widget_show(phd->widget);
 187
 188         file_data_register_notify_func(bar_pane_histogram_notify_cb, phd, NOTIFY_PRIORITY_LOW);
 189
 190         return phd->widget;
 191 }
 192
 193 GtkWidget *bar_pane_histogram_new_from_config(const gchar **attribute_names, const gchar **attribute_values)
 194 {
 195         gchar *title = g_strdup(_("NoName"));
 196         gboolean expanded = TRUE;
 197         gint height = 80;
 198
 199         while (*attribute_names)
 200                 {
 201                 const gchar *option = *attribute_names++;
 202                 const gchar *value = *attribute_values++;
 203
 204                 READ_CHAR_FULL("pane.title", title);
 205                 READ_BOOL_FULL("pane.expanded", expanded);
 206
 207
 208                 DEBUG_1("unknown attribute %s = %s", option, value);
 209                 }
 210
 211         return bar_pane_histogram_new(title, height, expanded);
 212 }
 213
 214
 215 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */