netsurf/frontends/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 <stdint.h>
#include <string.h>
#include "utils/nsoption.h"
#include "utils/messages.h"
#include "netsurf/browser_window.h"
#include "desktop/search.h"
#include "gtk/compat.h"
#include "gtk/scaffolding.h"
#include "gtk/window.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;
GtkStyleContext *style;
GtkStateFlags state;
state = nsgtk_widget_get_state_flags(hbox);
style = nsgtk_widget_get_style_context(hbox);
context = gtk_widget_get_pango_context(hbox);
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metrics = pango_context_get_metrics(context,
nsgtk_style_context_get_font(style, state),
pango_context_get_language(context));
char_width = pango_font_metrics_get_approximate_digit_width(metrics);
pango_font_metrics_unref(metrics);
nsgtk_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;
hbox = nsgtk_hbox_new(FALSE, 2);
label = gtk_label_new(messages_get("NewTab"));
gtk_label_set_ellipsize(GTK_LABEL(label), PANGO_ELLIPSIZE_END);
gtk_label_set_single_line_mode(GTK_LABEL(label), TRUE);
nsgtk_widget_set_alignment(label, GTK_ALIGN_START, GTK_ALIGN_CENTER);
nsgtk_widget_set_margins(label, 0, 0);
gtk_widget_show(label);
button = gtk_button_new();
close = nsgtk_image_new_from_stock(NSGTK_STOCK_CLOSE,
GTK_ICON_SIZE_MENU);
gtk_container_add(GTK_CONTAINER(button), close);
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nsgtk_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.");
#ifdef FIXME
GtkRcStyle *rcstyle;
rcstyle = gtk_rc_style_new();
rcstyle->xthickness = rcstyle->ythickness = 0;
gtk_widget_modify_style(button, rcstyle);
g_object_unref(rcstyle);
#endif
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);
gtk_widget_show_all(hbox);
return hbox;
}
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#include "utils/log.h"
/** callback when page is switched */
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static gint srcpagenum;
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/** The switch-page signal handler
*
* This signal is handled both before and after delivery to work round
* issue that setting the selected tab during the switch-page signal
* fails
*/
static void
nsgtk_tab_switch_page(GtkNotebook *notebook,
GtkWidget *page,
guint selpagenum,
gpointer user_data)
{
srcpagenum = gtk_notebook_get_current_page(notebook);
}
static void
nsgtk_tab_switch_page_after(GtkNotebook *notebook,
GtkWidget *selpage,
guint selpagenum,
gpointer user_data)
{
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GtkWidget *srcpage;
GtkWidget *addpage;
struct gui_window *gw;
nserror error;
addpage = g_object_get_data(G_OBJECT(notebook), "addtab");
if (selpage == addpage) {
if ((srcpagenum != -1) &&
(srcpagenum != (gint)selpagenum)) {
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/* ensure the add tab is not actually selected */
NSLOG(netsurf, INFO, "src %d sel %d", srcpagenum,
selpagenum);
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srcpage = gtk_notebook_get_nth_page(notebook, srcpagenum);
gw = g_object_get_data(G_OBJECT(srcpage), "gui_window");
if ((gw != NULL) && (nsgtk_get_scaffold(gw) != NULL)) {
error = nsgtk_scaffolding_new_tab(gw);
if (error != NSERROR_OK) {
NSLOG(netsurf, INFO,
"Failed to open new tab.");
}
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}
}
} else {
NSLOG(netsurf, INFO, "sel %d", selpagenum);
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/* tab with page in it */
gw = g_object_get_data(G_OBJECT(selpage), "gui_window");
if (gw != NULL) {
nsgtk_scaffolding_set_top_level(gw);
}
}
}
static void nsgtk_tab_page_reordered(GtkNotebook *notebook,
GtkWidget *child,
guint page_num,
gpointer user_data)
{
gint pages;
GtkWidget *addpage;
pages = gtk_notebook_get_n_pages(notebook);
addpage = g_object_get_data(G_OBJECT(notebook), "addtab");
if (((gint)page_num == (pages - 1)) &&
(child != addpage)) {
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/* moved tab to end */
gtk_notebook_reorder_child(notebook, addpage, -1);
}
}
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;
}
}
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/** adds a "new tab" tab */
static GtkWidget *
nsgtk_tab_add_newtab(GtkNotebook *notebook)
{
GtkWidget *tablabel;
GtkWidget *tabcontents;
GtkWidget *add;
tablabel = nsgtk_hbox_new(FALSE, 1);
tabcontents = nsgtk_hbox_new(FALSE, 1);
add = nsgtk_image_new_from_stock(NSGTK_STOCK_ADD, GTK_ICON_SIZE_MENU);
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gtk_box_pack_start(GTK_BOX(tablabel), add, FALSE, FALSE, 0);
gtk_widget_show_all(tablabel);
gtk_notebook_append_page(notebook, tabcontents, tablabel);
gtk_notebook_set_tab_reorderable(notebook, tabcontents, false);
gtk_widget_show_all(tabcontents);
g_object_set_data(G_OBJECT(notebook), "addtab", tabcontents);
return tablabel;
}
/** callback to alter tab visibility when pages are added or removed */
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static void
nsgtk_tab_visibility_update(GtkNotebook *notebook, GtkWidget *child, guint page)
{
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gint pagec = gtk_notebook_get_n_pages(notebook);
GtkWidget *addpage = g_object_get_data(G_OBJECT(notebook), "addtab");
if (addpage != NULL) {
pagec--; /* skip the add tab */
if ((gint)page == pagec) {
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/* ensure the add new tab cannot be current */
gtk_notebook_set_current_page(notebook, page - 1);
}
}
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if ((nsoption_bool(show_single_tab) == true) || (pagec > 1)) {
gtk_notebook_set_show_tabs(notebook, TRUE);
} else {
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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);
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nsgtk_tab_visibility_update(notebook, NULL, 0);
}
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/* exported interface documented in gtk/tabs.h */
void nsgtk_tab_init(struct nsgtk_scaffolding *gs)
{
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GtkNotebook *notebook;
notebook = nsgtk_scaffolding_notebook(gs);
nsgtk_tab_add_newtab(notebook);
g_signal_connect(notebook, "switch-page",
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G_CALLBACK(nsgtk_tab_switch_page), NULL);
g_signal_connect_after(notebook, "switch-page",
G_CALLBACK(nsgtk_tab_switch_page_after), NULL);
g_signal_connect(notebook, "page-removed",
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G_CALLBACK(nsgtk_tab_visibility_update), NULL);
g_signal_connect(notebook, "page-added",
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G_CALLBACK(nsgtk_tab_visibility_update), NULL);
g_signal_connect(notebook, "page-reordered",
G_CALLBACK(nsgtk_tab_page_reordered), NULL);
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nsgtk_tab_options_changed(notebook);
}
/* exported interface documented in gtk/tabs.h */
void nsgtk_tab_add(struct gui_window *gw,
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GtkWidget *tab_contents,
bool background)
{
GtkNotebook *notebook;
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GtkWidget *tabBox;
gint remember;
gint pages;
gint newpage;
g_object_set_data(G_OBJECT(tab_contents), "gui_window", gw);
notebook = nsgtk_scaffolding_notebook(nsgtk_get_scaffold(gw));
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tabBox = nsgtk_tab_label_setup(gw);
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nsgtk_window_set_tab(gw, tabBox);
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remember = gtk_notebook_get_current_page(notebook);
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pages = gtk_notebook_get_n_pages(notebook);
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newpage = gtk_notebook_insert_page(notebook, tab_contents, tabBox, pages - 1);
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gtk_notebook_set_tab_reorderable(notebook, tab_contents, true);
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gtk_widget_show_all(tab_contents);
if (background) {
gtk_notebook_set_current_page(notebook, remember);
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} else {
gtk_notebook_set_current_page(notebook, newpage);
}
gtk_widget_grab_focus(GTK_WIDGET(nsgtk_scaffolding_urlbar(
nsgtk_get_scaffold(gw))));
}
/* 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);
if (tab == NULL) {
return;
}
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 */
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nserror nsgtk_tab_close_current(GtkNotebook *notebook)
{
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gint pagen;
GtkWidget *page;
struct gui_window *gw;
GtkWidget *addpage;
pagen = gtk_notebook_get_current_page(notebook);
if (pagen == -1) {
return NSERROR_OK;
}
page = gtk_notebook_get_nth_page(notebook, pagen);
if (page == NULL) {
return NSERROR_OK;
}
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addpage = g_object_get_data(G_OBJECT(notebook), "addtab");
if (page == addpage) {
/* the add new tab page is current, cannot close that */
return NSERROR_OK;
}
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gw = g_object_get_data(G_OBJECT(page), "gui_window");
if (gw == NULL) {
return NSERROR_OK;
}
nsgtk_window_destroy_browser(gw);
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return NSERROR_OK;
}
nserror nsgtk_tab_prev(GtkNotebook *notebook)
{
gtk_notebook_prev_page(notebook);
return NSERROR_OK;
}
nserror nsgtk_tab_next(GtkNotebook *notebook)
{
gint pagen;
GtkWidget *page;
GtkWidget *addpage;
pagen = gtk_notebook_get_current_page(notebook);
if (pagen == -1) {
return NSERROR_OK;
}
page = gtk_notebook_get_nth_page(notebook, pagen + 1);
if (page == NULL) {
return NSERROR_OK;
}
addpage = g_object_get_data(G_OBJECT(notebook), "addtab");
if (page == addpage) {
/* cannot make add new tab page current */
return NSERROR_OK;
}
gtk_notebook_set_current_page(notebook, pagen + 1);
return NSERROR_OK;
}