info.c

来自「Gqview,Linux下基于GTK+库写成的轻量级而能丰富的图像浏览程序。」· C语言 代码 · 共 772 行 · 第 1/2 页

/*
 * 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 "info.h"

#include "bar_info.h"
#include "bar_exif.h"
#include "dnd.h"
#include "filelist.h"
#include "image.h"
#include "image-load.h"
#include "pixbuf-renderer.h"
#include "ui_bookmark.h"
#include "ui_fileops.h"
#include "ui_misc.h"

#include <pwd.h>
#include <grp.h>


#define IMAGE_SIZE_W 200
#define IMAGE_SIZE_H 200

#define DEF_PROPERTY_WIDTH  510
#define DEF_PROPERTY_HEIGHT 390

typedef struct _TabData TabData;
struct _TabData
{
	void (*func_free)(gpointer data);
	void (*func_sync)(InfoData *id, gpointer data);
	void (*func_image)(InfoData *id, gpointer data);
	gpointer data;
};


/*
 *-------------------------------------------------------------------
 * table utils
 *-------------------------------------------------------------------
 */

GtkWidget *table_add_line(GtkWidget *table, gint x, gint y,
			  const gchar *description, const gchar *text)
{
	GtkWidget *label;

	if (!text) text = "";

	label = pref_table_label(table, x, y, description, 1.0);
	pref_label_bold(label, TRUE, FALSE);

	label = pref_table_label(table, x + 1, y, text, 0.0);
	return label;
}

/*
 *-------------------------------------------------------------------
 * EXIF tab
 *-------------------------------------------------------------------
 */

static void info_tab_exif_image(InfoData *id, gpointer data)
{
	GtkWidget *bar = data;
	const gchar *path;

	if (id->image->unknown)
		{
		path = NULL;
		}
	else
       		{
		path = id->image->image_path;
		}

	bar_exif_set(bar, path);
}

static void info_tab_exif_sync(InfoData *id, gpointer data)
{
	GtkWidget *bar = data;

	bar_exif_set(bar, NULL);
}

static TabData *info_tab_exif_new(InfoData *id)
{
	TabData *td;
	GtkWidget *bar;
	GtkWidget *label;

	bar = bar_exif_new(FALSE, NULL, FALSE, NULL);
	gtk_container_set_border_width(GTK_CONTAINER(bar), PREF_PAD_BORDER);

	label = gtk_label_new(_("Exif"));
	gtk_notebook_append_page(GTK_NOTEBOOK(id->notebook), bar, label);
	gtk_widget_show(bar);

	/* register */
	td = g_new0(TabData, 1);
	td->func_free = NULL;
	td->func_sync = info_tab_exif_sync;
	td->func_image = info_tab_exif_image;
	td->data = bar;

	return td;
}

/*
 *-------------------------------------------------------------------
 * file attributes tab
 *-------------------------------------------------------------------
 */

typedef struct _InfoTabMeta InfoTabMeta;
struct _InfoTabMeta
{
	GtkWidget *bar_info;
};

static void info_tab_meta_free(gpointer data)
{
	InfoTabMeta *tab = data;

	g_free(tab);
}

static void info_tab_meta_sync(InfoData *id, gpointer data)
{
	InfoTabMeta *tab = data;

	bar_info_set(tab->bar_info, id->path);
}

static GList *info_tab_meta_list_cb(gpointer data)
{
	InfoData *id = data;

	return path_list_copy(id->list);
}

static TabData *info_tab_meta_new(InfoData *id)
{
	TabData *td;
	InfoTabMeta *tab;
	GtkWidget *label;

	tab = g_new0(InfoTabMeta, 1);

	tab->bar_info = bar_info_new(NULL, TRUE, NULL);
	bar_info_set_selection_func(tab->bar_info, info_tab_meta_list_cb, id);
	bar_info_selection(tab->bar_info, g_list_length(id->list) - 1);

	gtk_container_set_border_width(GTK_CONTAINER(tab->bar_info), PREF_PAD_BORDER);

	label = gtk_label_new(_("Keywords"));
	gtk_notebook_append_page(GTK_NOTEBOOK(id->notebook), tab->bar_info, label);
	gtk_widget_show(tab->bar_info);

	/* register */
	td = g_new0(TabData, 1);
	td->func_free = info_tab_meta_free;
	td->func_sync = info_tab_meta_sync;
	td->func_image = NULL;
	td->data = tab;

	return td;
}

/*
 *-------------------------------------------------------------------
 * general tab
 *-------------------------------------------------------------------
 */

typedef struct _InfoTabGeneral InfoTabGeneral;
struct _InfoTabGeneral
{
	GtkWidget *label_file_time;
	GtkWidget *label_file_size;
	GtkWidget *label_dimensions;
	GtkWidget *label_transparent;
	GtkWidget *label_image_size;
	GtkWidget *label_compression;
	GtkWidget *label_mime_type;

	GtkWidget *label_user;
	GtkWidget *label_group;
	GtkWidget *label_perms;

	gint compression_done;
	gint64 byte_size;
};

static void info_tab_general_image(InfoData *id, gpointer data)
{
	InfoTabGeneral *tab = data;
	gchar *buf;
	guint mem_size;
	gint has_alpha;
	GdkPixbuf *pixbuf;
	gint width, height;

	if (id->image->unknown) return;

	pixbuf_renderer_get_image_size(PIXBUF_RENDERER(id->image->pr), &width, &height);

	buf = g_strdup_printf("%d x %d", width, height);
	gtk_label_set_text(GTK_LABEL(tab->label_dimensions), buf);
	g_free(buf);

	pixbuf = image_get_pixbuf(id->image);
	if (pixbuf)
		{
		has_alpha = gdk_pixbuf_get_has_alpha(pixbuf);
		}
	else
		{
		has_alpha = FALSE;
		}
	gtk_label_set_text(GTK_LABEL(tab->label_transparent), has_alpha ? _("yes") : _("no"));

	mem_size = width * height * ((has_alpha) ? 4 : 3);
	buf = text_from_size_abrev(mem_size);
	gtk_label_set_text(GTK_LABEL(tab->label_image_size), buf);
	g_free(buf);

	if (!tab->compression_done && mem_size > 0)
		{
		buf = g_strdup_printf("%.1f%%", (double)tab->byte_size / mem_size * 100.0);
		gtk_label_set_text(GTK_LABEL(tab->label_compression), buf);
		g_free(buf);

		tab->compression_done = TRUE;
		}

	buf = image_loader_get_format(id->image->il);
	if (buf)
	gtk_label_set_text(GTK_LABEL(tab->label_mime_type), buf);
	g_free(buf);
}

static gchar *mode_number(mode_t m)
{
	int mb, mu, mg, mo;

	mb = mu = mg = mo = 0;

	if (m & S_ISUID) mb |= 4;
	if (m & S_ISGID) mb |= 2;
	if (m & S_ISVTX) mb |= 1;

	if (m & S_IRUSR) mu |= 4;
	if (m & S_IWUSR) mu |= 2;
	if (m & S_IXUSR) mu |= 1;

	if (m & S_IRGRP) mg |= 4;
	if (m & S_IWGRP) mg |= 2;
	if (m & S_IXGRP) mg |= 1;

	if (m & S_IROTH) mo |= 4;
	if (m & S_IWOTH) mo |= 2;
	if (m & S_IXOTH) mo |= 1;

	return g_strdup_printf("%d%d%d%d", mb, mu, mg, mo);
}

static void info_tab_general_sync_perm(InfoTabGeneral *tab, InfoData *id)
{
	struct stat st;

	if (!stat_utf8(id->path, &st))
		{
		gtk_label_set_text(GTK_LABEL(tab->label_user), "");
		gtk_label_set_text(GTK_LABEL(tab->label_group), "");
		gtk_label_set_text(GTK_LABEL(tab->label_perms), "");
		}
	else
		{
		struct passwd *user;
		struct group *grp;
		gchar pbuf[12];
		gchar *pmod;
		gchar *buf;

		user = getpwuid(st.st_uid);
		gtk_label_set_text(GTK_LABEL(tab->label_user), (user) ? user->pw_name : "");

		grp = getgrgid(st.st_gid);
		gtk_label_set_text(GTK_LABEL(tab->label_group), (grp) ? grp->gr_name : "");

		pbuf[0] = (st.st_mode & S_IRUSR) ? 'r' : '-';
		pbuf[1] = (st.st_mode & S_IWUSR) ? 'w' : '-';
		pbuf[2] = (st.st_mode & S_IXUSR) ? 'x' : '-';
		pbuf[3] = (st.st_mode & S_IRGRP) ? 'r' : '-';
		pbuf[4] = (st.st_mode & S_IWGRP) ? 'w' : '-';
		pbuf[5] = (st.st_mode & S_IXGRP) ? 'x' : '-';
		pbuf[6] = (st.st_mode & S_IROTH) ? 'r' : '-';
		pbuf[7] = (st.st_mode & S_IWOTH) ? 'w' : '-';
		pbuf[8] = (st.st_mode & S_IXOTH) ? 'x' : '-';
		pbuf[9] = '\0';

		pmod = mode_number(st.st_mode);
		buf = g_strdup_printf("%s (%s)", pbuf, pmod);
		gtk_label_set_text(GTK_LABEL(tab->label_perms), buf);
		g_free(buf);
		g_free(pmod);
		}
}

static void info_tab_general_sync(InfoData *id, gpointer data)
{
	InfoTabGeneral *tab = data;
	gchar *buf;

	gtk_label_set_text(GTK_LABEL(tab->label_file_time), text_from_time(filetime(id->path)));

	tab->byte_size = filesize(id->path);

	buf = text_from_size(tab->byte_size);
	gtk_label_set_text(GTK_LABEL(tab->label_file_size), buf);
	g_free(buf);

	gtk_label_set_text(GTK_LABEL(tab->label_dimensions), "");
	gtk_label_set_text(GTK_LABEL(tab->label_transparent), "");
	gtk_label_set_text(GTK_LABEL(tab->label_image_size), "");

	gtk_label_set_text(GTK_LABEL(tab->label_compression), "");
	gtk_label_set_text(GTK_LABEL(tab->label_mime_type), "");

	info_tab_general_sync_perm(tab, id);

	tab->compression_done = FALSE;
}

static void info_tab_general_free(gpointer data)
{
	InfoTabGeneral *tab = data;

	g_free(tab);
}

static TabData *info_tab_general_new(InfoData *id)
{
	TabData *td;
	InfoTabGeneral *tab;
	GtkWidget *table;
	GtkWidget *label;

	tab = g_new0(InfoTabGeneral, 1);

	table = pref_table_new(NULL, 2, 11, FALSE, FALSE);
	gtk_container_set_border_width(GTK_CONTAINER(table), PREF_PAD_BORDER);

	tab->label_file_time = table_add_line(table, 0, 0, _("File date:"), NULL);
	tab->label_file_size = table_add_line(table, 0, 1, _("File size:"), NULL);

	tab->label_dimensions = table_add_line(table, 0, 2, _("Dimensions:"), NULL);
	tab->label_transparent = table_add_line(table, 0, 3, _("Transparent:"), NULL);
	tab->label_image_size = table_add_line(table, 0, 4, _("Image size:"), NULL);

	tab->label_compression = table_add_line(table, 0, 5, _("Compress ratio:"), NULL);
	tab->label_mime_type = table_add_line(table, 0, 6, _("File type:"), NULL);

	tab->label_user = table_add_line(table, 0, 7, _("Owner:"), NULL);
	tab->label_group = table_add_line(table, 0, 8, _("Group:"), NULL);
	tab->label_perms = table_add_line(table, 0, 9, "", NULL);

	label = gtk_label_new(_("General"));
	gtk_notebook_append_page(GTK_NOTEBOOK(id->notebook), table, label);
	gtk_widget_show(table);

	/* register */
	td = g_new0(TabData, 1);
	td->func_free = info_tab_general_free;