5 horizontal_policy_changed (GtkComboBox *combo_box,
8 GtkScrollablePolicy policy = gtk_combo_box_get_active (combo_box);
10 gtk_scrollable_set_hscroll_policy (GTK_SCROLLABLE (viewport), policy);
14 vertical_policy_changed (GtkComboBox *combo_box,
15 GtkViewport *viewport)
17 GtkScrollablePolicy policy = gtk_combo_box_get_active (combo_box);
19 gtk_scrollable_set_vscroll_policy (GTK_SCROLLABLE (viewport), policy);
23 label_flip_changed (GtkComboBox *combo_box,
26 gint active = gtk_combo_box_get_active (combo_box);
29 gtk_label_set_angle (label, 0.0);
31 gtk_label_set_angle (label, 90.0);
35 content_width_changed (GtkSpinButton *spin_button,
38 GtkScrolledWindow *swindow = data;
41 value = gtk_spin_button_get_value (spin_button);
42 gtk_scrolled_window_set_min_content_width (swindow, (gint)value);
46 content_height_changed (GtkSpinButton *spin_button,
49 GtkScrolledWindow *swindow = data;
52 value = gtk_spin_button_get_value (spin_button);
53 gtk_scrolled_window_set_min_content_height (swindow, (gint)value);
57 kinetic_scrolling_changed (GtkToggleButton *toggle_button,
60 GtkScrolledWindow *swindow = data;
61 gboolean enabled = gtk_toggle_button_get_active (toggle_button);
63 gtk_scrolled_window_set_kinetic_scrolling (swindow, enabled);
67 scrollable_policy (void)
69 GtkWidget *window, *swindow, *hbox, *vbox, *frame, *cntl;
70 GtkWidget *viewport, *label, *expander, *widget;
72 window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
73 hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
74 vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
76 gtk_container_set_border_width (GTK_CONTAINER (window), 8);
78 gtk_widget_show (vbox);
79 gtk_widget_show (hbox);
80 gtk_container_add (GTK_CONTAINER (window), hbox);
81 gtk_box_pack_start (GTK_BOX (hbox), vbox, FALSE, FALSE, 0);
83 frame = gtk_frame_new ("Scrolled Window");
84 gtk_widget_show (frame);
85 gtk_box_pack_start (GTK_BOX (hbox), frame, TRUE, TRUE, 0);
87 swindow = gtk_scrolled_window_new (NULL, NULL);
88 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
89 GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
91 gtk_widget_show (swindow);
92 gtk_container_add (GTK_CONTAINER (frame), swindow);
94 viewport = gtk_viewport_new (NULL, NULL);
95 label = gtk_label_new ("Here is a wrapping label with a minimum width-chars of 40 and "
96 "a natural max-width-chars of 100 to demonstrate the usage of "
97 "scrollable widgets \"hscroll-policy\" and \"vscroll-policy\" "
98 "properties. Note also that when playing with the window height, "
99 "one can observe that the vscrollbar disappears as soon as there "
100 "is enough height to fit the content vertically if the window were "
101 "to be allocated a width without a vscrollbar present");
103 gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
104 gtk_label_set_width_chars (GTK_LABEL (label), 40);
105 gtk_label_set_max_width_chars (GTK_LABEL (label), 100);
107 gtk_widget_show (label);
108 gtk_widget_show (viewport);
109 gtk_container_add (GTK_CONTAINER (viewport), label);
110 gtk_container_add (GTK_CONTAINER (swindow), viewport);
112 /* Add controls here */
113 expander = gtk_expander_new ("Controls");
114 gtk_expander_set_expanded (GTK_EXPANDER (expander), TRUE);
115 cntl = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
116 gtk_widget_show (cntl);
117 gtk_widget_show (expander);
118 gtk_container_add (GTK_CONTAINER (expander), cntl);
119 gtk_box_pack_start (GTK_BOX (vbox), expander, FALSE, FALSE, 0);
121 /* Add Horizontal policy control here */
122 hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
123 gtk_widget_show (hbox);
125 widget = gtk_label_new ("hscroll-policy");
126 gtk_widget_show (widget);
127 gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
129 widget = gtk_combo_box_text_new ();
130 gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Minimum");
131 gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Natural");
132 gtk_combo_box_set_active (GTK_COMBO_BOX (widget), 0);
133 gtk_widget_show (widget);
135 gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
136 gtk_box_pack_start (GTK_BOX (cntl), hbox, FALSE, FALSE, 0);
138 g_signal_connect (G_OBJECT (widget), "changed",
139 G_CALLBACK (horizontal_policy_changed), viewport);
141 /* Add Vertical policy control here */
142 hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
143 gtk_widget_show (hbox);
145 widget = gtk_label_new ("vscroll-policy");
146 gtk_widget_show (widget);
147 gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
149 widget = gtk_combo_box_text_new ();
150 gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Minimum");
151 gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Natural");
152 gtk_combo_box_set_active (GTK_COMBO_BOX (widget), 0);
153 gtk_widget_show (widget);
155 gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
156 gtk_box_pack_start (GTK_BOX (cntl), hbox, FALSE, FALSE, 0);
158 g_signal_connect (G_OBJECT (widget), "changed",
159 G_CALLBACK (vertical_policy_changed), viewport);
161 /* Content size controls */
162 hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
164 widget = gtk_label_new ("min-content-width");
165 gtk_widget_show (widget);
166 gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
168 widget = gtk_spin_button_new_with_range (100.0, 1000.0, 10.0);
169 gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
170 gtk_box_pack_start (GTK_BOX (cntl), hbox, FALSE, FALSE, 0);
171 gtk_widget_show (widget);
172 gtk_widget_show (hbox);
174 g_signal_connect (G_OBJECT (widget), "value-changed",
175 G_CALLBACK (content_width_changed), swindow);
177 hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
179 widget = gtk_label_new ("min-content-height");
180 gtk_widget_show (widget);
181 gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
183 widget = gtk_spin_button_new_with_range (100.0, 1000.0, 10.0);
184 gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
185 gtk_box_pack_start (GTK_BOX (cntl), hbox, FALSE, FALSE, 0);
186 gtk_widget_show (widget);
187 gtk_widget_show (hbox);
189 g_signal_connect (G_OBJECT (widget), "value-changed",
190 G_CALLBACK (content_height_changed), swindow);
192 /* Add Label orientation control here */
193 hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
194 gtk_widget_show (hbox);
196 widget = gtk_label_new ("label-flip");
197 gtk_widget_show (widget);
198 gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
200 widget = gtk_combo_box_text_new ();
201 gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Horizontal");
202 gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget), "Vertical");
203 gtk_combo_box_set_active (GTK_COMBO_BOX (widget), 0);
204 gtk_widget_show (widget);
206 gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
207 gtk_box_pack_start (GTK_BOX (cntl), hbox, FALSE, FALSE, 0);
209 g_signal_connect (G_OBJECT (widget), "changed",
210 G_CALLBACK (label_flip_changed), label);
212 /* Add Kinetic scrolling control here */
213 widget = gtk_check_button_new_with_label ("Kinetic scrolling");
214 gtk_widget_show (widget);
215 gtk_box_pack_start (GTK_BOX (cntl), widget, TRUE, TRUE, 0);
216 g_signal_connect (G_OBJECT (widget), "toggled",
217 G_CALLBACK (kinetic_scrolling_changed), swindow);
219 gtk_widget_show (window);
224 main (int argc, char *argv[])
226 gtk_init (NULL, NULL);
228 scrollable_policy ();