Make editor menu initially hidden

[geany-mirror.git] / src / notebook.c

/*
 *      notebook.c - this file is part of Geany, a fast and lightweight IDE
 *
 *      Copyright 2006-2011 Enrico Tröger <enrico(dot)troeger(at)uvena(dot)de>
 *      Copyright 2006-2011 Nick Treleaven <nick(dot)treleaven(at)btinternet(dot)com>
 *
 *      This program 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; either version 2 of the License, or
 *      (at your option) any later version.
 *
 *      This program 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, write to the Free Software
 *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/*
 * Notebook tab Drag 'n' Drop reordering and tab management.
 */

#include "geany.h"
#include "notebook.h"
#include "document.h"
#include "editor.h"
#include "documentprivate.h"
#include "ui_utils.h"
#include "sidebar.h"
#include "support.h"
#include "callbacks.h"
#include "utils.h"
#include "keybindings.h"

#define GEANY_DND_NOTEBOOK_TAB_TYPE     "geany_dnd_notebook_tab"

static const GtkTargetEntry drag_targets[] =
{
        {GEANY_DND_NOTEBOOK_TAB_TYPE, GTK_TARGET_SAME_APP | GTK_TARGET_SAME_WIDGET, 0}
};

static GtkTargetEntry files_drop_targets[] = {
        { "STRING",                     0, 0 },
        { "UTF8_STRING",        0, 0 },
        { "text/plain",         0, 0 },
        { "text/uri-list",      0, 0 }
};


static void
notebook_page_reordered_cb(GtkNotebook *notebook, GtkWidget *child, guint page_num,
                gpointer user_data);

static void
on_window_drag_data_received(GtkWidget *widget, GdkDragContext *drag_context,
                gint x, gint y, GtkSelectionData *data, guint target_type,
                guint event_time, gpointer user_data);

static void
notebook_tab_close_clicked_cb(GtkButton *button, gpointer user_data);

static void setup_tab_dnd(void);


static gboolean focus_sci(GtkWidget *widget, GdkEventButton *event, gpointer user_data)
{
        GeanyDocument *doc = document_get_current();

        if (doc != NULL && event->button == 1)
                gtk_widget_grab_focus(GTK_WIDGET(doc->editor->sci));

        return FALSE;
}


static gboolean gtk_notebook_show_arrows(GtkNotebook *notebook)
{
        return notebook->scrollable;
#if 0
        /* To get this working we would need to define at least the first two fields of
         * GtkNotebookPage since it is a private field. The better way would be to
         * subclass GtkNotebook.
struct _FakeGtkNotebookPage
{
        GtkWidget *child;
        GtkWidget *tab_label;
};
 */
        gboolean show_arrow = FALSE;
        GList *children;

        if (! notebook->scrollable)
                return FALSE;

        children = notebook->children;
        while (children)
        {
                struct _FakeGtkNotebookPage *page = children->data;

                if (page->tab_label && ! gtk_widget_get_child_visible(page->tab_label))
                        show_arrow = TRUE;

                children = children->next;
        }
        return show_arrow;
#endif
}


static gboolean is_position_on_tab_bar(GtkNotebook *notebook, GdkEventButton *event)
{
        GtkWidget *page;
        GtkWidget *tab;
        GtkWidget *nb;
        GtkPositionType tab_pos;
        gint scroll_arrow_hlength, scroll_arrow_vlength;
        gdouble x, y;

        page = gtk_notebook_get_nth_page(notebook, 0);
        g_return_val_if_fail(page != NULL, FALSE);

        tab = gtk_notebook_get_tab_label(notebook, page);
        g_return_val_if_fail(tab != NULL, FALSE);

        tab_pos = gtk_notebook_get_tab_pos(notebook);
        nb = GTK_WIDGET(notebook);

        gtk_widget_style_get(GTK_WIDGET(notebook), "scroll-arrow-hlength", &scroll_arrow_hlength,
                "scroll-arrow-vlength", &scroll_arrow_vlength, NULL);

        if (! gdk_event_get_coords((GdkEvent*) event, &x, &y))
        {
                x = event->x;
                y = event->y;
        }

        switch (tab_pos)
        {
                case GTK_POS_TOP:
                case GTK_POS_BOTTOM:
                {
                        if (event->y >= 0 && event->y <= tab->allocation.height)
                        {
                                if (! gtk_notebook_show_arrows(notebook) || (
                                        x > scroll_arrow_hlength &&
                                        x < nb->allocation.width - scroll_arrow_hlength))
                                        return TRUE;
                        }
                        break;
                }
                case GTK_POS_LEFT:
                case GTK_POS_RIGHT:
                {
                        if (event->x >= 0 && event->x <= tab->allocation.width)
                        {
                                if (! gtk_notebook_show_arrows(notebook) || (
                                        y > scroll_arrow_vlength &&
                                        y < nb->allocation.height - scroll_arrow_vlength))
                                        return TRUE;
                        }
                }
        }

        return FALSE;
}


static void tab_bar_menu_activate_cb(GtkMenuItem *menuitem, gpointer data)
{
        GeanyDocument *doc = data;

        if (! DOC_VALID(doc))
                return;

        document_show_tab(doc);
}


static void on_open_in_new_window_activate(GtkMenuItem *menuitem, gpointer user_data)
{
        gchar *geany_path;
        GeanyDocument *doc = user_data;

        g_return_if_fail(doc->is_valid);

        geany_path = g_find_program_in_path("geany");

        if (geany_path)
        {
                gchar *doc_path = utils_get_locale_from_utf8(doc->file_name);
                gchar *argv[] = {geany_path, "-i", doc_path, NULL};
                GError *err = NULL;

                if (!utils_spawn_async(NULL, argv, NULL, 0, NULL, NULL, NULL, &err))
                {
                        g_printerr("Unable to open new window: %s", err->message);
                        g_error_free(err);
                }
                g_free(doc_path);
                g_free(geany_path);
        }
        else
                g_printerr("Unable to find 'geany'");
}


static void show_tab_bar_popup_menu(GdkEventButton *event, GtkWidget *page)
{
        GtkWidget *menu_item;
        static GtkWidget *menu = NULL;
        GeanyDocument *doc = NULL;
        gint page_num;

        if (menu == NULL)
                menu = gtk_menu_new();

        /* clear the old menu items */
        gtk_container_foreach(GTK_CONTAINER(menu), (GtkCallback) gtk_widget_destroy, NULL);

        ui_menu_add_document_items(GTK_MENU(menu), document_get_current(),
                G_CALLBACK(tab_bar_menu_activate_cb));

        menu_item = gtk_separator_menu_item_new();
        gtk_widget_show(menu_item);
        gtk_container_add(GTK_CONTAINER(menu), menu_item);

        if (page != NULL)
        {
                page_num = gtk_notebook_page_num(GTK_NOTEBOOK(main_widgets.notebook), page);
                doc = document_get_from_page(page_num);
        }

        menu_item = ui_image_menu_item_new(GTK_STOCK_OPEN, "Open in New _Window");
        gtk_widget_show(menu_item);
        gtk_container_add(GTK_CONTAINER(menu), menu_item);
        g_signal_connect(menu_item, "activate",
                G_CALLBACK(on_open_in_new_window_activate), doc);
        /* disable if not on disk */
        if (doc == NULL || !doc->real_path)
                gtk_widget_set_sensitive(menu_item, FALSE);

        menu_item = gtk_separator_menu_item_new();
        gtk_widget_show(menu_item);
        gtk_container_add(GTK_CONTAINER(menu), menu_item);

        menu_item = gtk_image_menu_item_new_from_stock(GTK_STOCK_CLOSE, NULL);
        gtk_widget_show(menu_item);
        gtk_container_add(GTK_CONTAINER(menu), menu_item);
        g_signal_connect(menu_item, "activate", G_CALLBACK(notebook_tab_close_clicked_cb), page);
        gtk_widget_set_sensitive(GTK_WIDGET(menu_item), (page != NULL));

        menu_item = ui_image_menu_item_new(GTK_STOCK_CLOSE, _("Close Ot_her Documents"));
        gtk_widget_show(menu_item);
        gtk_container_add(GTK_CONTAINER(menu), menu_item);
        g_signal_connect(menu_item, "activate", G_CALLBACK(on_close_other_documents1_activate), page);
        gtk_widget_set_sensitive(GTK_WIDGET(menu_item), (page != NULL));

        menu_item = ui_image_menu_item_new(GTK_STOCK_CLOSE, _("C_lose All"));
        gtk_widget_show(menu_item);
        gtk_container_add(GTK_CONTAINER(menu), menu_item);
        g_signal_connect(menu_item, "activate", G_CALLBACK(on_close_all1_activate), NULL);

        gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL, event->button, event->time);
}


static gboolean notebook_tab_bar_click_cb(GtkWidget *widget, GdkEventButton *event,
                                                                                  gpointer user_data)
{
        if (event->type == GDK_2BUTTON_PRESS)
        {
                /* accessing ::event_window is a little hacky but we need to make sure the click
                 * was in the tab bar and not inside the child */
                if (event->window != GTK_NOTEBOOK(main_widgets.notebook)->event_window)
                        return FALSE;

                if (is_position_on_tab_bar(GTK_NOTEBOOK(widget), event))
                {
                        document_new_file(NULL, NULL, NULL);
                        return TRUE;
                }
        }
        /* right-click is also handled here if it happened on the notebook tab bar but not
         * on a tab directly */
        else if (event->button == 3)
        {
                show_tab_bar_popup_menu(event, NULL);
                return TRUE;
        }
        return FALSE;
}


void notebook_init()
{
        /* Individual style for the tab close buttons */
        gtk_rc_parse_string(
                "style \"geany-close-tab-button-style\" {\n"
                "       GtkWidget::focus-padding = 0\n"
                "       GtkWidget::focus-line-width = 0\n"
                "       xthickness = 0\n"
                "       ythickness = 0\n"
                "}\n"
                "widget \"*.geany-close-tab-button\" style \"geany-close-tab-button-style\""
        );

        g_signal_connect_after(main_widgets.notebook, "button-press-event",
                G_CALLBACK(notebook_tab_bar_click_cb), NULL);

        g_signal_connect(main_widgets.notebook, "drag-data-received",
                G_CALLBACK(on_window_drag_data_received), NULL);

        setup_tab_dnd();
}


static void setup_tab_dnd()
{
        GtkWidget *notebook = main_widgets.notebook;

        g_signal_connect(notebook, "page-reordered", G_CALLBACK(notebook_page_reordered_cb), NULL);
}


static void
notebook_page_reordered_cb(GtkNotebook *notebook, GtkWidget *child, guint page_num,
        gpointer user_data)
{
        /* Not necessary to update open files treeview if it's sorted.
         * Note: if enabled, it's best to move the item instead of recreating all items. */
        /*sidebar_openfiles_update_all();*/
}


/* call this after the number of tabs in main_widgets.notebook changes. */
static void tab_count_changed(void)
{
        switch (gtk_notebook_get_n_pages(GTK_NOTEBOOK(main_widgets.notebook)))
        {
                case 0:
                /* Enables DnD for dropping files into the empty notebook widget */
                gtk_drag_dest_set(main_widgets.notebook, GTK_DEST_DEFAULT_ALL,
                        files_drop_targets,     G_N_ELEMENTS(files_drop_targets),
                        GDK_ACTION_COPY | GDK_ACTION_MOVE | GDK_ACTION_LINK | GDK_ACTION_ASK);
                break;

                case 1:
                /* Disables DnD for dropping files into the notebook widget and enables the DnD for moving file
                 * tabs. Files can still be dropped into the notebook widget because it will be handled by the
                 * active Scintilla Widget (only dropping to the tab bar is not possible but it should be ok) */
                gtk_drag_dest_set(main_widgets.notebook, GTK_DEST_DEFAULT_MOTION | GTK_DEST_DEFAULT_DROP,
                        drag_targets, G_N_ELEMENTS(drag_targets), GDK_ACTION_MOVE);
                break;
        }
}


static gboolean notebook_tab_click(GtkWidget *widget, GdkEventButton *event, gpointer data)
{
        guint state;

        /* toggle additional widgets on double click */
        if (event->type == GDK_2BUTTON_PRESS)
        {
                if (interface_prefs.notebook_double_click_hides_widgets)
                        on_menu_toggle_all_additional_widgets1_activate(NULL, NULL);

                return TRUE; /* stop other handlers like notebook_tab_bar_click_cb() */
        }
        /* close tab on middle click */
        if (event->button == 2)
        {
                document_remove_page(gtk_notebook_page_num(GTK_NOTEBOOK(main_widgets.notebook),
                        GTK_WIDGET(data)));
                return TRUE; /* stop other handlers like notebook_tab_bar_click_cb() */
        }
        /* switch last used tab on ctrl-click */
        state = event->state & gtk_accelerator_get_default_mod_mask();
        if (event->button == 1 && state == GDK_CONTROL_MASK)
        {
                keybindings_send_command(GEANY_KEY_GROUP_NOTEBOOK,
                        GEANY_KEYS_NOTEBOOK_SWITCHTABLASTUSED);
                return TRUE;
        }
        /* right-click is first handled here if it happened on a notebook tab */
        if (event->button == 3)
        {
                show_tab_bar_popup_menu(event, data);
                return TRUE;
        }

        return FALSE;
}


static void notebook_tab_close_button_style_set(GtkWidget *btn, GtkRcStyle *prev_style,
                                                                                                gpointer data)
{
        gint w, h;

        gtk_icon_size_lookup_for_settings(gtk_widget_get_settings(btn), GTK_ICON_SIZE_MENU, &w, &h);
        gtk_widget_set_size_request(btn, w + 2, h + 2);
}


/* Returns page number of notebook page, or -1 on error */
gint notebook_new_tab(GeanyDocument *this)
{
        GtkWidget *hbox, *ebox;
        gint tabnum;
        GtkWidget *page;
        gint cur_page;

        g_return_val_if_fail(this != NULL, -1);

        page = GTK_WIDGET(this->editor->sci);

        this->priv->tab_label = gtk_label_new(NULL);

        /* get button press events for the tab label and the space between it and
         * the close button, if any */
        ebox = gtk_event_box_new();
        GTK_WIDGET_SET_FLAGS(ebox, GTK_NO_WINDOW);
        g_signal_connect(ebox, "button-press-event", G_CALLBACK(notebook_tab_click), page);
        /* focus the current document after clicking on a tab */
        g_signal_connect_after(ebox, "button-release-event",
                G_CALLBACK(focus_sci), NULL);

        hbox = gtk_hbox_new(FALSE, 2);
        gtk_box_pack_start(GTK_BOX(hbox), this->priv->tab_label, FALSE, FALSE, 0);
        gtk_container_add(GTK_CONTAINER(ebox), hbox);

        if (file_prefs.show_tab_cross)
        {
                GtkWidget *image, *btn, *align;

                btn = gtk_button_new();
                gtk_button_set_relief(GTK_BUTTON(btn), GTK_RELIEF_NONE);
                gtk_button_set_focus_on_click(GTK_BUTTON(btn), FALSE);
                gtk_widget_set_name(btn, "geany-close-tab-button");

                image = gtk_image_new_from_stock(GTK_STOCK_CLOSE, GTK_ICON_SIZE_MENU);
                gtk_container_add(GTK_CONTAINER(btn), image);

                align = gtk_alignment_new(1.0, 0.5, 0.0, 0.0);
                gtk_container_add(GTK_CONTAINER(align), btn);
                gtk_box_pack_start(GTK_BOX(hbox), align, TRUE, TRUE, 0);

                g_signal_connect(btn, "clicked", G_CALLBACK(notebook_tab_close_clicked_cb), page);
                /* button overrides event box, so make middle click on button also close tab */
                g_signal_connect(btn, "button-press-event", G_CALLBACK(notebook_tab_click), page);
                /* handle style modification to keep button small as possible even when theme change */
                g_signal_connect(btn, "style-set", G_CALLBACK(notebook_tab_close_button_style_set), NULL);
        }

        gtk_widget_show_all(ebox);

        document_update_tab_label(this);

        if (file_prefs.tab_order_beside)
                cur_page = gtk_notebook_get_current_page(GTK_NOTEBOOK(main_widgets.notebook));
        else
                cur_page = file_prefs.tab_order_ltr ? -2 /* hack: -2 + 1 = -1, last page */ : 0;
        if (file_prefs.tab_order_ltr)
                tabnum = gtk_notebook_insert_page_menu(GTK_NOTEBOOK(main_widgets.notebook), page,
                        ebox, NULL, cur_page + 1);
        else
                tabnum = gtk_notebook_insert_page_menu(GTK_NOTEBOOK(main_widgets.notebook), page,
                        ebox, NULL, cur_page);

        tab_count_changed();

        /* enable tab DnD */
        gtk_notebook_set_tab_reorderable(GTK_NOTEBOOK(main_widgets.notebook), page, TRUE);

        return tabnum;
}


static void
notebook_tab_close_clicked_cb(GtkButton *button, gpointer user_data)
{
        gint cur_page = gtk_notebook_page_num(GTK_NOTEBOOK(main_widgets.notebook),
                GTK_WIDGET(user_data));

        document_remove_page(cur_page);
}


/* Always use this instead of gtk_notebook_remove_page(). */
void notebook_remove_page(gint page_num)
{
        gint curpage = gtk_notebook_get_current_page(GTK_NOTEBOOK(main_widgets.notebook));

        /* Focus the next page, not the previous */
        if (curpage == page_num && file_prefs.tab_order_ltr)
        {
                gtk_notebook_set_current_page(GTK_NOTEBOOK(main_widgets.notebook), curpage + 1);
        }

        /* now remove the page (so we don't temporarily switch to the previous page) */
        gtk_notebook_remove_page(GTK_NOTEBOOK(main_widgets.notebook), page_num);

        tab_count_changed();
}


static void
on_window_drag_data_received(GtkWidget *widget, GdkDragContext *drag_context,
                gint x, gint y, GtkSelectionData *data, guint target_type,
                guint event_time, gpointer user_data)
{
        gboolean success = FALSE;

        if (data->length > 0 && data->format == 8)
        {
                if (drag_context->action == GDK_ACTION_ASK)
                {
                        drag_context->action = GDK_ACTION_COPY;
                }

                document_open_file_list((const gchar *)data->data, data->length);

                success = TRUE;
        }
        gtk_drag_finish(drag_context, success, FALSE, event_time);
}