1 #define __SPW_UTILITIES_C__
3 /*
4 * Inkscape Widget Utilities
5 *
6 * Authors:
7 * Bryce W. Harrington <brycehar@bryceharrington.com>
8 * bulia byak <buliabyak@users.sf.net>
9 *
10 * Copyright (C) 2003 Bryce W. Harrington
11 *
12 * Released under GNU GPL, read the file 'COPYING' for more information
13 */
15 #ifdef HAVE_CONFIG_H
16 # include "config.h"
17 #endif
19 #include <cstring>
20 #include <string>
21 #include <gtk/gtk.h>
23 #include "selection.h"
25 #include "helper/unit-menu.h"
27 /**
28 * Creates a label widget with the given text, at the given col, row
29 * position in the table.
30 */
31 GtkWidget *
32 spw_label(GtkWidget * table, const gchar *label_text, int col, int row)
33 {
34 GtkWidget *label_widget;
36 label_widget = gtk_label_new (label_text);
37 g_assert(label_widget != NULL);
38 gtk_misc_set_alignment (GTK_MISC (label_widget), 1.0, 0.5);
39 gtk_widget_show (label_widget);
40 gtk_table_attach (GTK_TABLE (table), label_widget, col, col+1, row, row+1,
41 (GtkAttachOptions)(GTK_EXPAND | GTK_FILL), (GtkAttachOptions)0, 4, 0);
42 return label_widget;
43 }
45 /**
46 * Creates a horizontal layout manager with 4-pixel spacing between children
47 * and space for 'width' columns.
48 */
49 GtkWidget *
50 spw_hbox(GtkWidget * table, int width, int col, int row)
51 {
52 GtkWidget *hb;
53 /* Create a new hbox with a 4-pixel spacing between children */
54 hb = gtk_hbox_new (FALSE, 4);
55 g_assert(hb != NULL);
56 gtk_widget_show (hb);
57 gtk_table_attach (GTK_TABLE (table), hb, col, col+width, row, row+1,
58 (GtkAttachOptions)(GTK_EXPAND | GTK_FILL), (GtkAttachOptions)0, 0, 0);
59 return hb;
60 }
62 /**
63 * Creates a checkbutton widget and adds it to a vbox.
64 * This is a compound widget that includes a label.
65 */
66 GtkWidget *spw_vbox_checkbutton(GtkWidget *dialog, GtkWidget *vbox,
67 const gchar *label, const gchar *tip, gchar *key, GCallback cb)
68 {
69 g_assert (dialog != NULL);
70 g_assert (vbox != NULL);
72 GtkTooltips *tt = gtk_tooltips_new ();
74 GtkWidget *b = gtk_check_button_new_with_label (label);
75 gtk_tooltips_set_tip(tt, b, tip, NULL);
76 g_assert (b != NULL);
77 gtk_widget_show (b);
78 gtk_box_pack_start (GTK_BOX (vbox), b, FALSE, FALSE, 0);
79 gtk_object_set_data (GTK_OBJECT (b), "key", key);
80 gtk_object_set_data (GTK_OBJECT (dialog), key, b);
81 g_signal_connect (G_OBJECT (b), "toggled", cb, dialog);
82 return b;
83 }
86 /**
87 * Creates a checkbutton widget and adds it to a table.
88 * This is a compound widget that includes a label.
89 */
90 GtkWidget *
91 spw_checkbutton(GtkWidget * dialog, GtkWidget * table,
92 const gchar * label, gchar * key, int col, int row,
93 int insensitive, GCallback cb)
94 {
95 GtkWidget *b;
97 g_assert(dialog != NULL);
98 g_assert(table != NULL);
100 GtkWidget *l = gtk_label_new (label);
101 gtk_misc_set_alignment (GTK_MISC (l), 1.0, 0.5);
102 gtk_widget_show (l);
103 gtk_table_attach (GTK_TABLE (table), l, 0, 1, row, row+1,
104 (GtkAttachOptions)(GTK_EXPAND | GTK_FILL), (GtkAttachOptions)0, 0, 0);
106 b = gtk_check_button_new ();
107 gtk_widget_show (b);
108 gtk_table_attach (GTK_TABLE (table), b, 1, 2, row, row+1,
109 (GtkAttachOptions)(GTK_EXPAND | GTK_FILL), (GtkAttachOptions)0, 0, 0);
110 gtk_object_set_data (GTK_OBJECT (b), "key", key);
111 gtk_object_set_data (GTK_OBJECT (dialog), key, b);
112 g_signal_connect (G_OBJECT (b), "toggled", cb, dialog);
113 if (insensitive == 1) {
114 gtk_widget_set_sensitive (b, FALSE);
115 }
116 return b;
117 }
119 /**
120 * Creates a dropdown widget. This is a compound widget that includes
121 * a label as well as the dropdown.
122 */
123 GtkWidget *
124 spw_dropdown(GtkWidget * dialog, GtkWidget * table,
125 const gchar * label_text, gchar * key, int row,
126 GtkWidget * selector
127 )
128 {
129 g_assert(dialog != NULL);
130 g_assert(table != NULL);
131 g_assert(selector != NULL);
133 spw_label(table, label_text, 0, row);
135 gtk_widget_show (selector);
136 gtk_table_attach (GTK_TABLE (table), selector, 1, 2, row, row+1,
137 (GtkAttachOptions)(GTK_EXPAND | GTK_FILL), (GtkAttachOptions)0, 0, 0);
138 gtk_object_set_data (GTK_OBJECT (dialog), key, selector);
139 return selector;
140 }
142 /**
143 * Creates a unit selector widget, used for selecting whether one wishes
144 * to measure screen elements in millimeters, points, etc. This is a
145 * compound unit that includes a label as well as the dropdown selector.
146 */
147 GtkWidget *
148 spw_unit_selector(GtkWidget * dialog, GtkWidget * table,
149 const gchar * label_text, gchar * key, int row,
150 GtkWidget * us, GCallback cb, bool can_be_negative)
151 {
152 GtkWidget * sb;
153 GtkObject * a;
155 g_assert(dialog != NULL);
156 g_assert(table != NULL);
157 g_assert(us != NULL);
159 spw_label(table, label_text, 0, row);
161 a = gtk_adjustment_new (0.0, can_be_negative?-1e6:0, 1e6, 1.0, 10.0, 10.0);
162 g_assert(a != NULL);
163 gtk_object_set_data (GTK_OBJECT (a), "key", key);
164 gtk_object_set_data (GTK_OBJECT (a), "unit_selector", us);
165 gtk_object_set_data (GTK_OBJECT (dialog), key, a);
166 sp_unit_selector_add_adjustment (SP_UNIT_SELECTOR (us), GTK_ADJUSTMENT (a));
167 sb = gtk_spin_button_new (GTK_ADJUSTMENT (a), 1.0, 4);
168 g_assert(sb != NULL);
169 gtk_widget_show (sb);
170 gtk_table_attach (GTK_TABLE (table), sb, 1, 2, row, row+1,
171 (GtkAttachOptions)(GTK_EXPAND | GTK_FILL), (GtkAttachOptions)0, 0, 0);
172 g_signal_connect (G_OBJECT (a), "value_changed", cb, dialog);
173 return sb;
174 }
176 void
177 sp_set_font_size_recursive (GtkWidget *w, gpointer font)
178 {
179 guint size = GPOINTER_TO_UINT (font);
181 PangoFontDescription* pan = pango_font_description_new ();
182 pango_font_description_set_size (pan, size);
184 gtk_widget_modify_font (w, pan);
186 if (GTK_IS_CONTAINER(w)) {
187 gtk_container_foreach (GTK_CONTAINER(w), (GtkCallback) sp_set_font_size_recursive, font);
188 }
190 pango_font_description_free (pan);
191 }
193 void
194 sp_set_font_size (GtkWidget *w, guint font)
195 {
196 sp_set_font_size_recursive (w, GUINT_TO_POINTER(font));
197 }
199 void
200 sp_set_font_size_smaller (GtkWidget *w)
201 {
202 PangoContext *pc = gtk_widget_get_pango_context (w);
203 PangoFontDescription* pfd = pango_context_get_font_description (pc);
204 guint size = pango_font_description_get_size (pfd);
205 sp_set_font_size_recursive (w, GUINT_TO_POINTER((int) (0.8*size)));
206 }
208 /**
209 \brief Finds the descendant of w which has the data with the given key and returns the data, or NULL if there's none
210 */
211 gpointer
212 sp_search_by_data_recursive (GtkWidget *w, gpointer key)
213 {
214 gpointer r = NULL;
216 if (w && GTK_IS_OBJECT(w)) {
217 r = gtk_object_get_data (GTK_OBJECT(w), (gchar *) key);
218 }
219 if (r) return r;
221 if (GTK_IS_CONTAINER(w)) {
222 GList *ch = gtk_container_get_children (GTK_CONTAINER(w));
223 for (GList *i = ch; i != NULL; i = i->next) {
224 r = sp_search_by_data_recursive(GTK_WIDGET(i->data), key);
225 if (r) return r;
226 }
227 }
229 return NULL;
230 }
232 /**
233 \brief Returns the descendant of w which has the given key and value pair, or NULL if there's none
234 */
235 GtkWidget *
236 sp_search_by_value_recursive (GtkWidget *w, gchar *key, gchar *value)
237 {
238 gchar *r = NULL;
239 GtkWidget *child;
241 if (w && GTK_IS_OBJECT(w)) {
242 r = (gchar *) gtk_object_get_data (GTK_OBJECT(w), key);
243 }
244 if (r && !strcmp (r, value)) return w;
246 if (GTK_IS_CONTAINER(w)) {
247 GList *ch = gtk_container_get_children (GTK_CONTAINER(w));
248 for (GList *i = ch; i != NULL; i = i->next) {
249 child = sp_search_by_value_recursive(GTK_WIDGET(i->data), key, value);
250 if (child) return child;
251 }
252 }
254 return NULL;
255 }