bar_info.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 "bar_info.h"

#include "cache.h"
#include "filelist.h"
#include "info.h"
#include "utilops.h"
#include "ui_bookmark.h"
#include "ui_fileops.h"
#include "ui_misc.h"
#include "ui_utildlg.h"


#define BAR_KEYWORD_AUTOSAVE_TIME 10000


static const gchar *keyword_favorite_defaults[] = {
	N_("Favorite"),
	N_("Todo"),
	N_("People"),
	N_("Places"),
	N_("Art"),
	N_("Nature"),
	N_("Possessions"),
	NULL
};


static void bar_info_keyword_update_all(void);


/*
 *-------------------------------------------------------------------
 * keyword / comment utils
 *-------------------------------------------------------------------
 */

gint comment_write(const gchar *path, GList *keywords, const gchar *comment)
{
	FILE *f;

	f = fopen(path, "w");
	if (!f) return FALSE;

	fprintf(f, "#GQview comment (%s)\n\n", VERSION);

	fprintf(f, "[keywords]\n");
	while (keywords)
		{
		const gchar *word = keywords->data;
		keywords = keywords->next;

		fprintf(f, "%s\n", word);
		}
	fprintf(f, "\n");

	fprintf(f, "[comment]\n");
	fprintf(f, "%s\n", (comment) ? comment : "");

	fprintf(f, "#end\n");

	fclose(f);

	return TRUE;
}

gint comment_cache_write(const gchar *path, GList *keywords, const gchar *comment)
{
	gchar *comment_path;
	gint success = FALSE;

	/* If an existing metadata file exists, we will try writing to
	 * it's location regardless of the user's preference.
	 */
	comment_path = cache_find_location(CACHE_TYPE_METADATA, path);
	if (comment_path && !access_file(comment_path, W_OK))
		{
		g_free(comment_path);
		comment_path = NULL;
		}

	if (!comment_path)
		{
		gchar *comment_dir;
		mode_t mode = 0755;

		comment_dir = cache_get_location(CACHE_TYPE_METADATA, path, FALSE, &mode);
		if (cache_ensure_dir_exists(comment_dir, mode))
			{
			comment_path = g_strconcat(comment_dir, "/", filename_from_path(path),
						   GQVIEW_CACHE_EXT_METADATA, NULL);
			}
		g_free(comment_dir);
		}

	if (comment_path)
		{
		gchar *comment_pathl;

		if (debug) printf("Saving comment: %s\n", comment_path);

		comment_pathl = path_from_utf8(comment_path);

		success = comment_write(comment_pathl, keywords, comment);

		g_free(comment_pathl);
		g_free(comment_path);
		}

	return success;
}

gint comment_read(const gchar *path, GList **keywords, gchar **comment)
{
	FILE *f;
	gchar s_buf[1024];
	gchar *key = NULL;
	GList *list = NULL;
	GString *comment_build = NULL;

	f = fopen(path, "r");
	if (!f) return FALSE;

	while (fgets(s_buf,sizeof(s_buf), f))
		{
		if (s_buf[0]=='#') continue;
		if (s_buf[0]=='[')
			{
			gint c = 0;
			gchar *ptr = s_buf + 1;

			while(ptr[c] != ']' && ptr[c] != '\n' && ptr[c] != '\0') c++;

			g_free(key);
			key = g_strndup(ptr, c);
			}
		else if (key)
			{
			gint newline = FALSE;
			gchar *ptr = s_buf;

			while (*ptr != '\n' && *ptr != '\0') ptr++;
			if (*ptr == '\n')
				{
				*ptr = '\0';
				newline = TRUE;
				}

			if (strcasecmp(key, "keywords") == 0)
				{
				if (strlen(s_buf) > 0) list = g_list_prepend(list, g_strdup(s_buf));
				}
			else if (strcasecmp(key, "comment") == 0)
				{
				if (!comment_build) comment_build = g_string_new("");
				g_string_append(comment_build, s_buf);
				if (strlen(s_buf) > 0 && newline) g_string_append_c(comment_build, '\n');
				}
			}
		}

	fclose(f);
	g_free(key);

	*keywords = g_list_reverse(list);
	if (comment_build)
		{
		if (comment) *comment = g_strdup(comment_build->str);
		g_string_free(comment_build, TRUE);
		}

	return TRUE;
}

gint comment_cache_read(const gchar *path, GList **keywords, gchar **comment)
{
	gchar *comment_path;
	gchar *comment_pathl;
	gint success = FALSE;

	comment_path = cache_find_location(CACHE_TYPE_METADATA, path);
	if (!comment_path) return FALSE;

	comment_pathl = path_from_utf8(comment_path);

	success = comment_read(comment_pathl, keywords, comment);

	g_free(comment_pathl);
	g_free(comment_path);

	return success;
}

static gchar *comment_pull(GtkWidget *textview)
{
	GtkTextBuffer *buffer;
	GtkTextIter start, end;
                                                                                                                    
	buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(textview));
	gtk_text_buffer_get_bounds(buffer, &start, &end);
                                                                                                                    
	return gtk_text_buffer_get_text(buffer, &start, &end, FALSE);
}

GList *keyword_list_pull(GtkWidget *text_widget)
{
	GList *list = NULL;
	gchar *text;
	gchar *ptr;

	if (GTK_IS_TEXT_VIEW(text_widget))
		{
		text = comment_pull(text_widget);
		}
	else if (GTK_IS_ENTRY(text_widget))
		{
		text = g_strdup(gtk_entry_get_text(GTK_ENTRY(text_widget)));
		}
	else
		{
		return NULL;
		}

	ptr = text;
	while (*ptr != '\0')
		{
		gchar *begin;
		gint l = 0;

		while (*ptr == ' ' || *ptr == ',' || *ptr == '\n' || *ptr == '\r' || *ptr == '\b') ptr++;
		begin = ptr;
		if (*ptr != '\0')
			{
			while (*ptr != ' ' && *ptr != ',' &&
			       *ptr != '\n' && *ptr != '\r' && *ptr != '\b' &&
			       *ptr != '\0')
				{
				ptr++;
				l++;
				}
			}

		if (l > 0) list = g_list_append(list, g_strndup(begin, l));
		}

	g_free(text);

	return list;
}

void keyword_list_push(GtkWidget *textview, GList *list)
{
	GtkTextBuffer *buffer;
	GtkTextIter start, end;

	buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(textview));
	gtk_text_buffer_get_bounds(buffer, &start, &end);
	gtk_text_buffer_delete (buffer, &start, &end);

	while (list)
		{
		const gchar *word = list->data;
		GtkTextIter iter;

		gtk_text_buffer_get_end_iter(buffer, &iter);
		if (word) gtk_text_buffer_insert(buffer, &iter, word, -1);
		gtk_text_buffer_get_end_iter(buffer, &iter);
		gtk_text_buffer_insert(buffer, &iter, "\n", -1);

		list = list->next;
		}
}

static void metadata_set_keywords(const gchar *path, GList *list, gint add)
{
	gchar *comment = NULL;
	GList *keywords = NULL;
	GList *save_list = NULL;

	comment_cache_read(path, &keywords, &comment);

	if (add)
		{
		GList *work;

		work = list;
		while (work)
			{
			gchar *key;
			GList *p;

			key = work->data;
			work = work->next;

			p = keywords;
			while (p && key)
				{
				gchar *needle = p->data;
				p = p->next;

				if (strcmp(needle, key) == 0) key = NULL;
				}

			if (key) keywords = g_list_append(keywords, g_strdup(key));
			}
		save_list = keywords;
		}
	else
		{
		save_list = list;
		}

	comment_cache_write(path, save_list, comment);

	path_list_free(keywords);
	g_free(comment);
}

/*
 *-------------------------------------------------------------------
 * keyword list dialog
 *-------------------------------------------------------------------
 */

#define KEYWORD_DIALOG_WIDTH  200
#define KEYWORD_DIALOG_HEIGHT 250

typedef struct _KeywordDlg KeywordDlg;
struct _KeywordDlg
{
	GenericDialog *gd;
	GtkWidget *treeview;
};

static KeywordDlg *keyword_dialog = NULL;


static void keyword_dialog_cancel_cb(GenericDialog *gd, gpointer data)
{
	g_free(keyword_dialog);
	keyword_dialog = NULL;
}

static void keyword_dialog_ok_cb(GenericDialog *gd, gpointer data)
{
	KeywordDlg *kd = data;
	GtkTreeModel *store;
	GtkTreeIter iter;
	gint valid;

	history_list_free_key("keywords");

	store = gtk_tree_view_get_model(GTK_TREE_VIEW(kd->treeview));
	valid = gtk_tree_model_get_iter_first(store, &iter);
	while (valid)
		{
		gchar *key;

		gtk_tree_model_get(store, &iter, 0, &key, -1);
		valid = gtk_tree_model_iter_next(store, &iter);

		history_list_add_to_key("keywords", key, 0);
		}

	keyword_dialog_cancel_cb(gd, data);

	bar_info_keyword_update_all();
}

static void keyword_dialog_add_cb(GtkWidget *button, gpointer data)
{
	KeywordDlg *kd = data;
	GtkTreeSelection *selection;
	GtkTreeModel *store;
	GtkTreeIter sibling;
	GtkTreeIter iter;
	GtkTreePath *tpath;

	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(kd->treeview));
	if (gtk_tree_selection_get_selected(selection, &store, &sibling))
		{
		gtk_list_store_insert_before(GTK_LIST_STORE(store), &iter, &sibling);
		}
	else
		{
		store = gtk_tree_view_get_model(GTK_TREE_VIEW(kd->treeview));
		gtk_list_store_append(GTK_LIST_STORE(store), &iter);
		}

	gtk_list_store_set(GTK_LIST_STORE(store), &iter, 1, TRUE, -1);

	tpath = gtk_tree_model_get_path(store, &iter);
	gtk_tree_view_set_cursor(GTK_TREE_VIEW(kd->treeview), tpath,
				 gtk_tree_view_get_column(GTK_TREE_VIEW(kd->treeview), 0), TRUE);
	gtk_tree_path_free(tpath);
}

static void keyword_dialog_remove_cb(GtkWidget *button, gpointer data)
{
	KeywordDlg *kd = data;
	GtkTreeSelection *selection;
	GtkTreeModel *store;
	GtkTreeIter iter;
	GtkTreeIter next;
	GtkTreePath *tpath;

	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(kd->treeview));
	if (!gtk_tree_selection_get_selected(selection, &store, &iter)) return;

	tpath = NULL;
	next = iter;
	if (gtk_tree_model_iter_next(store, &next))
		{
		tpath = gtk_tree_model_get_path(store, &next);
		}
	else
		{
		tpath = gtk_tree_model_get_path(store, &iter);
		if (!gtk_tree_path_prev(tpath))
			{
			gtk_tree_path_free(tpath);
			tpath = NULL;
			}
		}
	if (tpath)
		{
		gtk_tree_view_set_cursor(GTK_TREE_VIEW(kd->treeview), tpath,
					 gtk_tree_view_get_column(GTK_TREE_VIEW(kd->treeview), 0), FALSE);
		gtk_tree_path_free(tpath);
		}

	gtk_list_store_remove(GTK_LIST_STORE(store), &iter);
}

static void keyword_dialog_edit_cb(GtkCellRendererText *renderer, const gchar *path,
				   const gchar *new_text, gpointer data)
{
	KeywordDlg *kd = data;
	GtkTreeModel *store;
	GtkTreeIter iter;
	GtkTreePath *tpath;

	if (!new_text || strlen(new_text) == 0) return;

	store = gtk_tree_view_get_model(GTK_TREE_VIEW(kd->treeview));

	tpath = gtk_tree_path_new_from_string(path);
	gtk_tree_model_get_iter(store, &iter, tpath);
	gtk_tree_path_free(tpath);

	gtk_list_store_set(GTK_LIST_STORE(store), &iter, 0, new_text, -1);
}

static void keyword_dialog_populate(KeywordDlg *kd)
{
	GtkListStore *store;
	GList *list;

	store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW(kd->treeview)));
	gtk_list_store_clear(store);

	list = history_list_get_by_key("keywords");
	list = g_list_last(list);
	while (list)
		{
		GtkTreeIter iter;

		gtk_list_store_append(store, &iter);
		gtk_list_store_set(store, &iter, 0, list->data,
						 1, TRUE, -1);

		list = list->prev;
		}
}

static void keyword_dialog_show(void)
{
	GtkWidget *scrolled;
	GtkListStore *store;
	GtkTreeViewColumn *column;
	GtkCellRenderer *renderer;
	GtkWidget *hbox;
	GtkWidget *button;

	if (keyword_dialog)
		{
		gtk_window_present(GTK_WINDOW(keyword_dialog->gd->dialog));
		return;
		}

	keyword_dialog = g_new0(KeywordDlg, 1);

	keyword_dialog->gd = generic_dialog_new(_("Keyword Presets"),
						"GQview", "keyword_presets", NULL, TRUE,
						keyword_dialog_cancel_cb, keyword_dialog);
	generic_dialog_add_message(keyword_dialog->gd, NULL, _("Favorite keywords list"), NULL);

	generic_dialog_add_button(keyword_dialog->gd, GTK_STOCK_OK, NULL,
				 keyword_dialog_ok_cb, TRUE);

	scrolled = gtk_scrolled_window_new(NULL, NULL);
	gtk_widget_set_size_request(scrolled, KEYWORD_DIALOG_WIDTH, KEYWORD_DIALOG_HEIGHT);
	gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolled), GTK_SHADOW_IN);
	gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled),
				       GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
	gtk_box_pack_start(GTK_BOX(keyword_dialog->gd->vbox), scrolled, TRUE, TRUE, 5);
	gtk_widget_show(scrolled);

	store = gtk_list_store_new(2, G_TYPE_STRING, G_TYPE_BOOLEAN);
	keyword_dialog->treeview = gtk_tree_view_new_with_model(GTK_TREE_MODEL(store));
	g_object_unref(store);

	gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(keyword_dialog->treeview), FALSE);
	gtk_tree_view_set_search_column(GTK_TREE_VIEW(keyword_dialog->treeview), 0);
	gtk_tree_view_set_reorderable(GTK_TREE_VIEW(keyword_dialog->treeview), TRUE);

	column = gtk_tree_view_column_new();
	gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
	renderer = gtk_cell_renderer_text_new();
	g_signal_connect(G_OBJECT(renderer), "edited",
			 G_CALLBACK(keyword_dialog_edit_cb), keyword_dialog);
	gtk_tree_view_column_pack_start(column, renderer, TRUE);
	gtk_tree_view_column_add_attribute(column, renderer, "text", 0);
	gtk_tree_view_column_add_attribute(column, renderer, "editable", 1);
	gtk_tree_view_append_column(GTK_TREE_VIEW(keyword_dialog->treeview), column);

	gtk_container_add(GTK_CONTAINER(scrolled), keyword_dialog->treeview);
	gtk_widget_show(keyword_dialog->treeview);

	hbox = gtk_hbox_new(FALSE, 5);
	gtk_box_pack_start(GTK_BOX(keyword_dialog->gd->vbox), hbox, FALSE, FALSE, 0);
	gtk_widget_show(hbox);

	button = gtk_button_new_from_stock(GTK_STOCK_ADD);
	g_signal_connect(G_OBJECT(button), "clicked",
			 G_CALLBACK(keyword_dialog_add_cb), keyword_dialog);
	gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, FALSE, 0);
	gtk_widget_show(button);

	button = gtk_button_new_from_stock(GTK_STOCK_REMOVE);
	g_signal_connect(G_OBJECT(button), "clicked",
			 G_CALLBACK(keyword_dialog_remove_cb), keyword_dialog);
	gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, FALSE, 0);
	gtk_widget_show(button);

	keyword_dialog_populate(keyword_dialog);

	gtk_widget_show(keyword_dialog->gd->dialog);
}


static void bar_keyword_edit_cb(GtkWidget *button, gpointer data)
{
	keyword_dialog_show();
}


/*
 *-------------------------------------------------------------------
 * info bar
 *-------------------------------------------------------------------
 */

typedef enum {
	BAR_SORT_COPY,
	BAR_SORT_MOVE,
	BAR_SORT_LINK
} SortActionType;

enum {
	KEYWORD_COLUMN_TOGGLE = 0,
	KEYWORD_COLUMN_TEXT
};

typedef struct _BarInfoData BarInfoData;
struct _BarInfoData
{
	GtkWidget *vbox;
	GtkWidget *group_box;
	GtkWidget *label_file_name;