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netsurf/gtk/tabs.c

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/*
* Copyright 2008 Michael Lester <element3260@gmail.com>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <glade/glade.h>
#include <string.h>
#include "gtk/window.h"
#include "gtk/gui.h"
#include "desktop/browser.h"
#include "content/content.h"
#include "desktop/options.h"
#include "desktop/search.h"
#include "utils/utils.h"
#include "gtk/search.h"
#include "gtk/tabs.h"
#define TAB_WIDTH_N_CHARS 15
/** callback to update sizes when style-set gtk signal */
static void nsgtk_tab_update_size(GtkWidget *hbox, GtkStyle *previous_style,
GtkWidget *close_button)
{
PangoFontMetrics *metrics;
PangoContext *context;
int char_width, h, w;
context = gtk_widget_get_pango_context(hbox);
metrics = pango_context_get_metrics(context, hbox->style->font_desc,
pango_context_get_language(context));
char_width = pango_font_metrics_get_approximate_digit_width(metrics);
pango_font_metrics_unref(metrics);
gtk_icon_size_lookup_for_settings(gtk_widget_get_settings (hbox),
GTK_ICON_SIZE_MENU, &w, &h);
gtk_widget_set_size_request(hbox,
TAB_WIDTH_N_CHARS * PANGO_PIXELS(char_width) + 2 * w,
-1);
gtk_widget_set_size_request(close_button, w + 4, h + 4);
}
/** Create a notebook tab label */
static GtkWidget *nsgtk_tab_label_setup(struct gui_window *window)
{
GtkWidget *hbox, *label, *button, *close;
GtkRcStyle *rcstyle;
hbox = gtk_hbox_new(FALSE, 2);
if (nsoption_bool(new_blank) == true)
label = gtk_label_new("New Tab");
else
label = gtk_label_new("Loading...");
gtk_label_set_ellipsize(GTK_LABEL(label), PANGO_ELLIPSIZE_END);
gtk_label_set_single_line_mode(GTK_LABEL(label), TRUE);
gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
gtk_misc_set_padding(GTK_MISC(label), 0, 0);
gtk_widget_show(label);
button = gtk_button_new();
close = gtk_image_new_from_stock("gtk-close", GTK_ICON_SIZE_MENU);
gtk_container_add(GTK_CONTAINER(button), close);
gtk_button_set_focus_on_click(GTK_BUTTON(button), FALSE);
gtk_button_set_relief(GTK_BUTTON(button), GTK_RELIEF_NONE);
gtk_widget_set_tooltip_text(button, "Close this tab.");
rcstyle = gtk_rc_style_new();
rcstyle->xthickness = rcstyle->ythickness = 0;
gtk_widget_modify_style(button, rcstyle);
g_object_unref(rcstyle);
g_signal_connect_swapped(button, "clicked",
G_CALLBACK(nsgtk_window_destroy_browser), window);
g_signal_connect(hbox, "style-set",
G_CALLBACK(nsgtk_tab_update_size), button);
gtk_box_pack_start(GTK_BOX(hbox), label, TRUE, TRUE, 0);
gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, FALSE, 0);
g_object_set_data(G_OBJECT(hbox), "label", label);
g_object_set_data(G_OBJECT(hbox), "close-button", button);
nsgtk_window_set_tab(window, hbox);
gtk_widget_show_all(hbox);
return hbox;
}
/** callback when page is switched */
static void nsgtk_tab_page_changed(GtkNotebook *notebook, gpointer *page,
gint page_num)
{
GtkWidget *window = gtk_notebook_get_nth_page(notebook, page_num);
struct gui_window *gw = g_object_get_data(G_OBJECT(window),
"gui_window");
if (gw != NULL) {
nsgtk_scaffolding_set_top_level(gw);
}
}
static void
nsgtk_tab_orientation(GtkNotebook *notebook)
{
switch (nsoption_int(position_tab)) {
case 0:
gtk_notebook_set_tab_pos(notebook, GTK_POS_TOP);
break;
case 1:
gtk_notebook_set_tab_pos(notebook, GTK_POS_LEFT);
break;
case 2:
gtk_notebook_set_tab_pos(notebook, GTK_POS_RIGHT);
break;
case 3:
gtk_notebook_set_tab_pos(notebook, GTK_POS_BOTTOM);
break;
}
}
/** callback to alter tab visibility when pages are added or removed */
static void
nsgtk_tab_visibility_update(GtkNotebook *notebook, GtkWidget *child, guint page)
{
gint num_pages = gtk_notebook_get_n_pages(notebook);
if ((nsoption_bool(show_single_tab) == true) || (num_pages > 1)) {
gtk_notebook_set_show_tabs(notebook, TRUE);
} else {
gtk_notebook_set_show_tabs(notebook, FALSE);
}
}
/* exported interface documented in gtk/tabs.h */
void nsgtk_tab_options_changed(GtkNotebook *notebook)
{
nsgtk_tab_orientation(notebook);
nsgtk_tab_visibility_update(notebook, NULL, 0);
}
/* exported interface documented in gtk/tabs.h */
void nsgtk_tab_init(GtkNotebook *notebook)
{
g_signal_connect(notebook, "switch-page",
G_CALLBACK(nsgtk_tab_page_changed), NULL);
g_signal_connect(notebook, "page-removed",
G_CALLBACK(nsgtk_tab_visibility_update), NULL);
g_signal_connect(notebook, "page-added",
G_CALLBACK(nsgtk_tab_visibility_update), NULL);
nsgtk_tab_options_changed(notebook);
}
/* exported interface documented in gtk/tabs.h */
void nsgtk_tab_add(struct gui_window *window,
GtkWidget *tab_contents, bool background)
{
GtkWidget *tabs = GTK_WIDGET(nsgtk_scaffolding_notebook(
nsgtk_get_scaffold(window)));
GtkWidget *tabBox = nsgtk_tab_label_setup(window);
gint remember = gtk_notebook_get_current_page(GTK_NOTEBOOK(tabs));
gtk_notebook_append_page(GTK_NOTEBOOK(tabs), tab_contents, tabBox);
/*causes gtk errors can't set a parent */
gtk_notebook_set_tab_reorderable(GTK_NOTEBOOK(tabs),
tab_contents,
true);
gtk_widget_show_all(tab_contents);
gtk_notebook_set_current_page(GTK_NOTEBOOK(tabs),
gtk_notebook_get_n_pages(GTK_NOTEBOOK(tabs)) - 1);
if (background) {
gtk_notebook_set_current_page(GTK_NOTEBOOK(tabs), remember);
}
gtk_widget_grab_focus(GTK_WIDGET(nsgtk_scaffolding_urlbar(
nsgtk_get_scaffold(window))));
}
/* exported interface documented in gtk/tabs.h */
void nsgtk_tab_set_title(struct gui_window *g, const char *title)
{
GtkWidget *label;
GtkWidget *tab;
tab = nsgtk_window_get_tab(g);
gboolean is_top_level = (tab != NULL);
if (is_top_level) {
label = g_object_get_data(G_OBJECT(tab), "label");
gtk_label_set_text(GTK_LABEL(label), title);
gtk_widget_set_tooltip_text(tab, title);
}
}
/* exported interface documented in gtk/tabs.h */
void nsgtk_tab_close_current(GtkNotebook *notebook)
{
gint curr_page = gtk_notebook_get_current_page(notebook);
GtkWidget *window = gtk_notebook_get_nth_page(notebook, curr_page);
struct gui_window *gw = g_object_get_data(G_OBJECT(window),
"gui_window");
if (gtk_notebook_get_n_pages(notebook) < 2)
return; /* wicked things happen if we close the last tab */
nsgtk_window_destroy_browser(gw);
/* deletes 2 notebook tabs at a time!
gtk_notebook_remove_page(notebook, curr_page); */
}
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