layout.c

Gqview,Linux下基于GTK+库写成的轻量级而能丰富的图像浏览程序。

/*
 * GQview
 * (C) 2004 John Ellis
 *
 * Author: John Ellis
 *
 * This software is released under the GNU General Public License (GNU GPL).
 * Please read the included file COPYING for more information.
 * This software comes with no warranty of any kind, use at your own risk!
 */

#include "gqview.h"
#include "layout.h"

#include "image.h"
#include "layout_config.h"
#include "layout_image.h"
#include "layout_util.h"
#include "menu.h"
#include "pixbuf-renderer.h"
#include "pixbuf_util.h"
#include "view_dir_list.h"
#include "view_dir_tree.h"
#include "view_file_list.h"
#include "view_file_icon.h"
#include "ui_bookmark.h"
#include "ui_fileops.h"
#include "ui_menu.h"
#include "ui_misc.h"
#include "ui_tabcomp.h"

#include "icons/tools.xpm"

#define MAINWINDOW_DEF_WIDTH 700
#define MAINWINDOW_DEF_HEIGHT 500

#define MAIN_WINDOW_DIV_HPOS 270
#define MAIN_WINDOW_DIV_VPOS 200

#define TOOLWINDOW_DEF_WIDTH 260
#define TOOLWINDOW_DEF_HEIGHT 450
#define PROGRESS_WIDTH 150
#define ZOOM_LABEL_WIDTH 64

#define PANE_DIVIDER_SIZE 10


GList *layout_window_list = NULL;


static void layout_list_scroll_to_subpart(LayoutWindow *lw, const gchar *needle);


/*
 *-----------------------------------------------------------------------------
 * misc
 *-----------------------------------------------------------------------------
 */

gint layout_valid(LayoutWindow **lw)
{
	if (*lw == NULL)
		{
		if (layout_window_list) *lw = layout_window_list->data;
		return (*lw != NULL);
		}

	return (g_list_find(layout_window_list, *lw) != NULL);
}

LayoutWindow *layout_find_by_image(ImageWindow *imd)
{
	GList *work;

	work = layout_window_list;
	while (work)
		{
		LayoutWindow *lw = work->data;
		work = work->next;

		if (lw->image == imd) return lw;
		}

	return NULL;
}

/*
 *-----------------------------------------------------------------------------
 * menu, toolbar, and dir view
 *-----------------------------------------------------------------------------
 */

static void layout_path_entry_changed_cb(GtkWidget *widget, gpointer data)
{
	LayoutWindow *lw = data;
	gchar *buf;

	if (gtk_combo_box_get_active(GTK_COMBO_BOX(widget)) < 0) return;

	buf = g_strdup(gtk_entry_get_text(GTK_ENTRY(lw->path_entry)));
	if (!buf || (lw->path && strcmp(buf, lw->path) == 0))
		{
		g_free(buf);
		return;
		}

	layout_set_path(lw, buf);

        g_free(buf);
}

static void layout_path_entry_tab_cb(const gchar *path, gpointer data)
{
	LayoutWindow *lw = data;
	gchar *buf;
	gchar *base;

	buf = g_strdup(path);
	parse_out_relatives(buf);
	base = remove_level_from_path(buf);

	if (isdir(buf))
		{
		if ((!lw->path || strcmp(lw->path, buf) != 0) && layout_set_path(lw, buf))
			{
			gint pos = -1;
			/* put the '/' back, if we are in tab completion for a dir and result was path change */
			gtk_editable_insert_text(GTK_EDITABLE(lw->path_entry), "/", -1, &pos);
			gtk_editable_set_position(GTK_EDITABLE(lw->path_entry),
						  strlen(gtk_entry_get_text(GTK_ENTRY(lw->path_entry))));
			}
		}
	else if (lw->path && strcmp(lw->path, base) == 0)
		{
		layout_list_scroll_to_subpart(lw, filename_from_path(buf));
		}

	g_free(base);
	g_free(buf);
}

static void layout_path_entry_cb(const gchar *path, gpointer data)
{
	LayoutWindow *lw = data;
	gchar *buf;

	buf = g_strdup(path);
	parse_out_relatives(buf);

	layout_set_path(lw, buf);

	g_free(buf);
}

static void layout_vdlist_select_cb(ViewDirList *vdl, const gchar *path, gpointer data)
{
	LayoutWindow *lw = data;

	layout_set_path(lw, path);
}

static void layout_vdtree_select_cb(ViewDirTree *vdt, const gchar *path, gpointer data)
{
	LayoutWindow *lw = data;

	layout_set_path(lw, path);
}

static GtkWidget *layout_tool_setup(LayoutWindow *lw)
{
	GtkWidget *box;
	GtkWidget *menu_bar;
	GtkWidget *tabcomp;

	box = gtk_vbox_new(FALSE, 0);

	menu_bar = layout_actions_menu_bar(lw);
	gtk_box_pack_start(GTK_BOX(box), menu_bar, FALSE, FALSE, 0);
	gtk_widget_show(menu_bar);

	lw->toolbar = layout_button_bar(lw);
	gtk_box_pack_start(GTK_BOX(box), lw->toolbar, FALSE, FALSE, 0);
	if (!lw->toolbar_hidden) gtk_widget_show(lw->toolbar);

	tabcomp = tab_completion_new_with_history(&lw->path_entry, NULL, "path_list", -1,
						  layout_path_entry_cb, lw);
	tab_completion_add_tab_func(lw->path_entry, layout_path_entry_tab_cb, lw);
	gtk_box_pack_start(GTK_BOX(box), tabcomp, FALSE, FALSE, 0);
	gtk_widget_show(tabcomp);

	g_signal_connect(G_OBJECT(lw->path_entry->parent), "changed",
			 G_CALLBACK(layout_path_entry_changed_cb), lw);

	if (lw->tree_view)
		{
		lw->vdt = vdtree_new(lw->path, TRUE);
		vdtree_set_layout(lw->vdt, lw);
		vdtree_set_select_func(lw->vdt, layout_vdtree_select_cb, lw);

		lw->dir_view = lw->vdt->widget;
		}
	else
		{
		lw->vdl = vdlist_new(lw->path);
		vdlist_set_layout(lw->vdl, lw);
		vdlist_set_select_func(lw->vdl, layout_vdlist_select_cb, lw);

		lw->dir_view = lw->vdl->widget;
		}

	gtk_box_pack_start(GTK_BOX(box), lw->dir_view, TRUE, TRUE, 0);
	gtk_widget_show(lw->dir_view);

	gtk_widget_show(box);

	return box;
}

/*
 *-----------------------------------------------------------------------------
 * sort button (and menu)
 *-----------------------------------------------------------------------------
 */

static void layout_sort_menu_cb(GtkWidget *widget, gpointer data)
{
	LayoutWindow *lw;
	SortType type;

	lw = submenu_item_get_data(widget);
	if (!lw) return;

	type = (SortType)GPOINTER_TO_INT(data);

	layout_sort_set(lw, type, lw->sort_ascend);
}

static void layout_sort_menu_ascend_cb(GtkWidget *widget, gpointer data)
{
	LayoutWindow *lw = data;

	layout_sort_set(lw, lw->sort_method, !lw->sort_ascend);
}

static void layout_sort_menu_hide_cb(GtkWidget *widget, gpointer data)
{
	/* destroy the menu */
	gtk_widget_unref(GTK_WIDGET(widget));
}

static void layout_sort_button_press_cb(GtkWidget *widget, gpointer data)
{
	LayoutWindow *lw = data;
	GtkWidget *menu;
	GdkEvent *event;
	guint32 etime;

	menu = submenu_add_sort(NULL, G_CALLBACK(layout_sort_menu_cb), lw, FALSE, FALSE, TRUE, lw->sort_method);

	/* apparently the menu is never sunk, even on a popup */
	g_object_ref(G_OBJECT(menu));
	gtk_object_sink(GTK_OBJECT(menu));

        /* ascending option */
	menu_item_add_divider(menu);
	menu_item_add_check(menu, _("Ascending"), lw->sort_ascend, G_CALLBACK(layout_sort_menu_ascend_cb), lw);

	g_signal_connect(G_OBJECT(menu), "selection_done",
			 G_CALLBACK(layout_sort_menu_hide_cb), NULL);

	event = gtk_get_current_event();
	if (event)
		{
		etime = gdk_event_get_time(event);
		gdk_event_free(event);
		}
	else
		{
		etime = 0;
		}

	gtk_menu_popup(GTK_MENU(menu), NULL, NULL, NULL, NULL, 0, etime);
}

static GtkWidget *layout_sort_button(LayoutWindow *lw)
{
	GtkWidget *button;

	button = gtk_button_new_with_label(sort_type_get_text(lw->sort_method));
        g_signal_connect(G_OBJECT(button), "clicked",
			 G_CALLBACK(layout_sort_button_press_cb), lw);
        gtk_button_set_relief(GTK_BUTTON(button), GTK_RELIEF_NONE);

        return button;
}

/*
 *-----------------------------------------------------------------------------
 * status bar
 *-----------------------------------------------------------------------------
 */

void layout_status_update_progress(LayoutWindow *lw, gdouble val, const gchar *text)
{
	if (!layout_valid(&lw)) return;
	if (!lw->info_progress_bar) return;

	gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(lw->info_progress_bar), val);
	gtk_progress_bar_set_text(GTK_PROGRESS_BAR(lw->info_progress_bar), (text) ? text : " ");
}

void layout_status_update_info(LayoutWindow *lw, const gchar *text)
{
	gchar *buf = NULL;

	if (!layout_valid(&lw)) return;

	if (!text)
		{
		gint n;
		gint64 n_bytes = 0;
		gint s;
		gint64 s_bytes = 0;
		const gchar *ss;
		gchar *b;
		gchar *sb;

		if (layout_image_slideshow_active(lw))
			{
			if (!layout_image_slideshow_paused(lw))
				{
				ss = _(" Slideshow");
				}
			else
				{
				ss = _(" Paused");
				}
			}
		else
			{
			ss = "";
			}

		n = layout_list_count(lw, &n_bytes);
		s = layout_selection_count(lw, &s_bytes);

		layout_bars_new_selection(lw, s);

		if (s > 0)
			{
			b = text_from_size_abrev(n_bytes);
			sb = text_from_size_abrev(s_bytes);
			buf = g_strdup_printf(_("%s, %d files (%s, %d)%s"), b, n, sb, s, ss);
			g_free(b);
			g_free(sb);
			}
		else if (n > 0)
			{
			b = text_from_size_abrev(n_bytes);
			buf = g_strdup_printf(_("%s, %d files%s"), b, n, ss);
			g_free(b);
			}
		else
			{
			buf = g_strdup_printf(_("%d files%s"), n, ss);
			}

		text = buf;

		layout_image_overlay_update(lw);
		}

	gtk_label_set_text(GTK_LABEL(lw->info_status), text);
	g_free(buf);
}

void layout_status_update_image(LayoutWindow *lw)
{
	gchar *text;
	gchar *b;

	if (!layout_valid(&lw) || !lw->image) return;

	text = image_zoom_get_as_text(lw->image);
	gtk_label_set_text(GTK_LABEL(lw->info_zoom), text);
	g_free(text);

	b = text_from_size(lw->image->size);

	if (lw->image->unknown)
		{
		if (image_get_path(lw->image) && !access_file(image_get_path(lw->image), R_OK))
			{
			text = g_strdup_printf(_("(no read permission) %s bytes"), b);
			}
		else
			{
			text = g_strdup_printf(_("( ? x ? ) %s bytes"), b);
			}
		}
	else
		{
		gint width, height;

		pixbuf_renderer_get_image_size(PIXBUF_RENDERER(lw->image->pr), &width, &height);
		text = g_strdup_printf(_("( %d x %d ) %s bytes"),
				       width, height, b);
		}

	gtk_label_set_text(GTK_LABEL(lw->info_details), text);

	g_free(b);
	g_free(text);
}

void layout_status_update_all(LayoutWindow *lw)
{
	layout_status_update_progress(lw, 0.0, NULL);
	layout_status_update_info(lw, NULL);
	layout_status_update_image(lw);
}

static GtkWidget *layout_status_label(gchar *text, GtkWidget *box, gint start, gint size, gint expand)
{
	GtkWidget *label;
	GtkWidget *frame;

	frame = gtk_frame_new(NULL);
	if (size) gtk_widget_set_size_request(frame, size, -1);
	gtk_frame_set_shadow_type(GTK_FRAME(frame), GTK_SHADOW_IN);
	if (start)
		{
		gtk_box_pack_start(GTK_BOX(box), frame, expand, expand, 0);
		}
	else
		{
		gtk_box_pack_end(GTK_BOX(box), frame, expand, expand, 0);
		}
	gtk_widget_show(frame);

	label = gtk_label_new(text ? text : "");
	gtk_container_add(GTK_CONTAINER(frame), label);
	gtk_widget_show(label);

	return label;
}

static void layout_status_setup(LayoutWindow *lw, GtkWidget *box, gint small_format)
{
	GtkWidget *hbox;

	if (lw->info_box) return;

	if (small_format)
		{
		lw->info_box = gtk_vbox_new(FALSE, 0);
		}
	else
		{
		lw->info_box = gtk_hbox_new(FALSE, 0);
		}
	gtk_box_pack_end(GTK_BOX(box), lw->info_box, FALSE, FALSE, 0);
	gtk_widget_show(lw->info_box);

	if (small_format)
		{
		hbox = gtk_hbox_new(FALSE, 0);
		gtk_box_pack_start(GTK_BOX(lw->info_box), hbox, FALSE, FALSE, 0);
		gtk_widget_show(hbox);
		}
	else
		{
		hbox = lw->info_box;
		}
	lw->info_progress_bar = gtk_progress_bar_new();
	gtk_widget_set_size_request(lw->info_progress_bar, PROGRESS_WIDTH, -1);
	gtk_box_pack_start(GTK_BOX(hbox), lw->info_progress_bar, FALSE, FALSE, 0);
	gtk_widget_show(lw->info_progress_bar);

	lw->info_sort = layout_sort_button(lw);
	gtk_box_pack_start(GTK_BOX(hbox), lw->info_sort, FALSE, FALSE, 0);
	gtk_widget_show(lw->info_sort);

	lw->info_status = layout_status_label(NULL, lw->info_box, TRUE, 0, (!small_format));

	if (small_format)
		{
		hbox = gtk_hbox_new(FALSE, 0);
		gtk_box_pack_start(GTK_BOX(lw->info_box), hbox, FALSE, FALSE, 0);
		gtk_widget_show(hbox);
		}
	else
		{
		hbox = lw->info_box;
		}
	lw->info_details = layout_status_label(NULL, hbox, TRUE, 0, TRUE);
	lw->info_zoom = layout_status_label(NULL, hbox, FALSE, ZOOM_LABEL_WIDTH, FALSE);
}

/*
 *-----------------------------------------------------------------------------
 * views
 *-----------------------------------------------------------------------------
 */

static GtkWidget *layout_tools_new(LayoutWindow *lw)
{
	lw->dir_view = layout_tool_setup(lw);
	return lw->dir_view;
}

static void layout_list_status_cb(ViewFileList *vfl, gpointer data)
{
	LayoutWindow *lw = data;

	layout_status_update_info(lw, NULL);
}

static void layout_list_thumb_cb(ViewFileList *vfl, gdouble val, const gchar *text, gpointer data)
{
	LayoutWindow *lw = data;

	layout_status_update_progress(lw, val, text);
}

static void layout_icon_status_cb(ViewFileIcon *vfi, gpointer data)
{
        LayoutWindow *lw = data;

        layout_status_update_info(lw, NULL);
}

static void layout_icon_thumb_cb(ViewFileIcon *vfi, gdouble val, const gchar *text, gpointer data)
{
        LayoutWindow *lw = data;

        layout_status_update_progress(lw, val, text);
}

static GtkWidget *layout_list_new(LayoutWindow *lw)
{
	if (lw->icon_view)
		{
		lw->vfi = vficon_new(NULL);
		vficon_set_layout(lw->vfi, lw);

		vficon_set_status_func(lw->vfi, layout_icon_status_cb, lw);
		vficon_set_thumb_status_func(lw->vfi, layout_icon_thumb_cb, lw);

		return lw->vfi->widget;
		}

	lw->vfl = vflist_new(NULL, lw->thumbs_enabled);
	vflist_set_layout(lw->vfl, lw);

	vflist_set_status_func(lw->vfl, layout_list_status_cb, lw);
	vflist_set_thumb_status_func(lw->vfl, layout_list_thumb_cb, lw);

	return lw->vfl->widget;
}

static void layout_list_sync_thumb(LayoutWindow *lw)
{
	if (lw->vfl) vflist_thumb_set(lw->vfl, lw->thumbs_enabled);
}

static void layout_list_scroll_to_subpart(LayoutWindow *lw, const gchar *needle)
{
	if (!lw) return;
#if 0
	if (lw->vfl) vflist_scroll_to_subpart(lw->vfl, needle);
	if (lw->vfi) vficon_scroll_to_subpart(lw->vfi, needle);
#endif
}

GList *layout_list(LayoutWindow *lw)
{
	if (!layout_valid(&lw)) return NULL;

	if (lw->vfl) return vflist_get_list(lw->vfl);
	if (lw->vfi) return vficon_get_list(lw->vfi);

	return NULL;
}

gint layout_list_count(LayoutWindow *lw, gint64 *bytes)
{
	if (!layout_valid(&lw)) return 0;

	if (lw->vfl) return vflist_count(lw->vfl, bytes);
	if (lw->vfi) return vficon_count(lw->vfi, bytes);

	return 0;
}

const gchar *layout_list_get_path(LayoutWindow *lw, gint index)
{
	if (!layout_valid(&lw)) return NULL;

	if (lw->vfl) return vflist_index_get_path(lw->vfl, index);
	if (lw->vfi) return vficon_index_get_path(lw->vfi, index);

	return NULL;
}

gint layout_list_get_index(LayoutWindow *lw, const gchar *path)