Add "Load stylesheet"

3 files changed, 260 insertions, 107 deletions

diff --git a/src/mainwindow.c b/src/mainwindow.c
index 95df042..c5d9a9c 100644
--- a/src/mainwindow.c
+++ b/src/mainwindow.c
@@ -229,6 +229,151 @@ static gint open_sig(GtkWidget *widget, struct presentation *p)
 }
 
 
+static void do_slide_update(struct presentation *p, PangoContext *pc)
+{
+	rerender_slide(p);
+	redraw_editor(p);
+	if ( (p->slideshow != NULL)
+	  && (p->cur_edit_slide == p->cur_proj_slide) )
+	{
+		redraw_slideshow(p);
+	}
+}
+
+
+static gint add_furniture(GtkWidget *widget, struct menu_pl *pl)
+{
+	struct frame *fr;
+	struct style *sty = pl->sty;
+	struct presentation *p = pl->p;
+
+	fr = add_subframe(p->cur_edit_slide->top);
+	fr->style = sty;
+	fr->lop_from_style = 1;
+	set_edit(p, p->cur_edit_slide);
+	fr->sc = strdup("");
+	fr->sc_len = 6;
+	set_selection(p, fr);
+	fr->pos = 0;
+	p->cursor_pos = 0;
+
+	do_slide_update(p, p->pc);
+
+	return 0;
+}
+
+
+static void update_style_menus(struct presentation *p)
+{
+	GtkWidget *menu;
+	GtkWidget *item;
+	struct slide_template *t;
+	TemplateIterator *iter;
+	int i, j, k, n_j, n_k;
+
+	for ( i=0; i<p->n_menu_rebuild; i++ ) {
+		gtk_widget_destroy(p->menu_rebuild_list[i]);
+	}
+	free(p->menu_rebuild_list);
+	free(p->menu_path_list);
+
+	/* Add the styles to the "Insert" menu */
+	menu = gtk_ui_manager_get_widget(p->ui, "/displaywindow/insert");
+	menu = gtk_menu_item_get_submenu(GTK_MENU_ITEM(menu));
+
+	n_k = 0;  n_j = 0;
+	for ( t = template_first(p->ss, &iter);
+	      t != NULL;
+	      t = template_next(p->ss, iter) )
+	{
+		n_k += t->n_styles;
+		n_j++;
+	}
+
+	p->menu_rebuild_list = calloc(n_j, sizeof(GtkWidget *));
+	if ( p->menu_rebuild_list == NULL ) return;
+
+	p->menu_path_list = calloc(n_k, sizeof(struct menu_pl));
+	if ( p->menu_path_list == NULL ) return;
+
+	j = 0;
+	k = 0;
+	for ( t = template_first(p->ss, &iter);
+	      t != NULL;
+	      t = template_next(p->ss, iter) )
+	{
+		GtkWidget *submenu;
+
+		submenu = gtk_menu_new();
+		item = gtk_menu_item_new_with_label(t->name);
+		gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
+		gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), submenu);
+		p->menu_rebuild_list[j++] = item;
+
+		for ( i=0; i<t->n_styles; i++ ) {
+
+			struct style *s = t->styles[i];
+
+			p->menu_path_list[k].p = p;
+			p->menu_path_list[k].sty = s;
+
+			item = gtk_menu_item_new_with_label(s->name);
+			gtk_menu_shell_append(GTK_MENU_SHELL(submenu), item);
+			g_signal_connect(G_OBJECT(item), "activate",
+			                 G_CALLBACK(add_furniture),
+			                 &p->menu_path_list[k]);
+			k++;
+
+		}
+	}
+
+	gtk_widget_show_all(menu);
+
+	p->n_menu_rebuild = j;
+}
+
+
+static gint loadstyle_response_sig(GtkWidget *d, gint response,
+			      struct presentation *p)
+{
+	if ( response == GTK_RESPONSE_ACCEPT ) {
+
+		char *filename;
+
+		filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(d));
+		replace_stylesheet(p, filename);
+		g_free(filename);
+		update_style_menus(p);
+		rerender_slide(p);
+
+	}
+
+	gtk_widget_destroy(d);
+
+	return 0;
+}
+
+
+static gint loadstyle_sig(GtkWidget *widget, struct presentation *p)
+{
+	GtkWidget *d;
+
+	d = gtk_file_chooser_dialog_new("Load Stylesheet",
+	                                GTK_WINDOW(p->window),
+	                                GTK_FILE_CHOOSER_ACTION_OPEN,
+	                                GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
+	                                GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
+	                                NULL);
+
+	g_signal_connect(G_OBJECT(d), "response",
+			 G_CALLBACK(loadstyle_response_sig), p);
+
+	gtk_widget_show_all(d);
+
+	return 0;
+}
+
+
 static gint new_sig(GtkWidget *widget, struct presentation *pnn)
 {
 	struct presentation *p;
@@ -533,115 +678,12 @@ static gint open_notes_sig(GtkWidget *widget, struct presentation *p)
 }
 
 
-static void do_slide_update(struct presentation *p, PangoContext *pc)
-{
-	rerender_slide(p);
-	redraw_editor(p);
-	if ( (p->slideshow != NULL)
-	  && (p->cur_edit_slide == p->cur_proj_slide) )
-	{
-		redraw_slideshow(p);
-	}
-}
-
-
-
-static gint add_furniture(GtkWidget *widget, struct menu_pl *pl)
-{
-	struct frame *fr;
-	struct style *sty = pl->sty;
-	struct presentation *p = pl->p;
-
-	fr = add_subframe(p->cur_edit_slide->top);
-	fr->style = sty;
-	fr->lop_from_style = 1;
-	set_edit(p, p->cur_edit_slide);
-	fr->sc = strdup("");
-	fr->sc_len = 6;
-	set_selection(p, fr);
-	fr->pos = 0;
-	p->cursor_pos = 0;
-
-	do_slide_update(p, p->pc);
-
-	return 0;
-}
-
-
-static void update_style_menus(struct presentation *p)
-{
-	GtkWidget *menu;
-	GtkWidget *item;
-	struct slide_template *t;
-	TemplateIterator *iter;
-	int i, j, n;
-
-	for ( i=0; i<p->n_menu_rebuild; i++ ) {
-		gtk_widget_destroy(p->menu_rebuild_list[i]);
-	}
-	free(p->menu_rebuild_list);
-	free(p->menu_path_list);
-
-	/* Add the styles to the "Insert" menu */
-	menu = gtk_ui_manager_get_widget(p->ui, "/displaywindow/insert");
-	menu = gtk_menu_item_get_submenu(GTK_MENU_ITEM(menu));
-	item = gtk_separator_menu_item_new();
-	gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
-
-	n = 0;
-	for ( t = template_first(p->ss, &iter);
-	      t != NULL;
-	      t = template_next(p->ss, iter) )
-	{
-		n += t->n_styles;
-		n += 1;  /* The top level */
-	}
-
-	p->menu_rebuild_list = calloc(n, sizeof(GtkWidget *));
-	if ( p->menu_rebuild_list == NULL ) return;
-
-	p->menu_path_list = calloc(n, sizeof(struct menu_pl));
-	if ( p->menu_path_list == NULL ) return;
-
-	j = 0;
-	for ( t = template_first(p->ss, &iter);
-	      t != NULL;
-	      t = template_next(p->ss, iter) )
-	{
-		GtkWidget *submenu;
-
-		submenu = gtk_menu_new();
-		item = gtk_menu_item_new_with_label(t->name);
-		gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
-			gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), submenu);
-		p->menu_rebuild_list[j++] = item;
-
-		for ( i=0; i<t->n_styles; i++ ) {
-
-			struct style *s = t->styles[i];
-
-			p->menu_path_list[j].p = p;
-			p->menu_path_list[j].sty = s;
-
-			item = gtk_menu_item_new_with_label(s->name);
-			gtk_menu_shell_append(GTK_MENU_SHELL(submenu), item);
-			p->menu_rebuild_list[j] = item;
-			g_signal_connect(G_OBJECT(item), "activate",
-			                 G_CALLBACK(add_furniture),
-			                 &p->menu_path_list[j]);
-			j++;
-
-		}
-	}
-
-	p->n_menu_rebuild = j;
-}
-
-
 static void add_menu_bar(struct presentation *p, GtkWidget *vbox)
 {
 	GError *error = NULL;
 	GtkWidget *toolbar;
+	GtkWidget *menu;
+	GtkWidget *item;
 
 	GtkActionEntry entries[] = {
 
@@ -650,13 +692,15 @@ static void add_menu_bar(struct presentation *p, GtkWidget *vbox)
 			NULL, NULL, G_CALLBACK(new_sig) },
 		{ "OpenAction", GTK_STOCK_OPEN, "_Open...",
 			NULL, NULL, G_CALLBACK(open_sig) },
+		{ "LoadStyleAction", NULL, "_Load Stylesheet...",
+			NULL, NULL, G_CALLBACK(loadstyle_sig) },
 		{ "SaveAction", GTK_STOCK_SAVE, "_Save",
 			NULL, NULL, G_CALLBACK(save_sig) },
 		{ "SaveAsAction", GTK_STOCK_SAVE_AS, "Save _As...",
 			NULL, NULL, G_CALLBACK(saveas_sig) },
-		{ "SaveStyleAction", GTK_STOCK_SAVE_AS, "Save St_ylesheet",
+		{ "SaveStyleAction", NULL, "Save St_ylesheet",
 			NULL, NULL, G_CALLBACK(save_ss_sig) },
-		{ "ExportPDFAction", GTK_STOCK_SAVE_AS, "Export PDF",
+		{ "ExportPDFAction", NULL, "Export PDF",
 			NULL, NULL, G_CALLBACK(export_pdf_sig) },
 		{ "QuitAction", GTK_STOCK_QUIT, "_Quit",
 			NULL, NULL, G_CALLBACK(quit_sig) },
@@ -730,6 +774,11 @@ static void add_menu_bar(struct presentation *p, GtkWidget *vbox)
 	gtk_toolbar_insert(GTK_TOOLBAR(toolbar),
 	                   gtk_separator_tool_item_new(), -1);
 
+	menu = gtk_ui_manager_get_widget(p->ui, "/displaywindow/insert");
+	menu = gtk_menu_item_get_submenu(GTK_MENU_ITEM(menu));
+	item = gtk_separator_menu_item_new();
+	gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
+
 	update_style_menus(p);
 	update_toolbar(p);
 }
diff --git a/src/stylesheet.c b/src/stylesheet.c
index 18a55b2..9d81e20 100644
--- a/src/stylesheet.c
+++ b/src/stylesheet.c
@@ -303,6 +303,109 @@ StyleSheet *tree_to_stylesheet(struct ds_node *root)
 }
 
 
+static int fixup_styles(struct frame *fr, StyleSheet *ss)
+{
+	int i;
+	char *t;
+	int n = 0;
+
+	if ( fr->style != NULL ) {
+
+		/* FIXME: Horrible to do this using names and string comparisons
+		 *  - what if the stylesheets are in different languages?
+		 * Better would be to have "roles" for common types of style
+		 * and match using those. */
+
+		t = fr->style->name;
+
+		for ( i=0; i<ss->n_styles; i++ ) {
+			if ( strcmp(t, ss->styles[i]->name) == 0 ) {
+				fr->style = ss->styles[i];
+				n = 1;
+				break;
+			}
+		}
+	}
+
+	for ( i=0; i<fr->num_children; i++ ) {
+		n += fixup_styles(fr->children[i], ss);
+	}
+
+	return n;
+}
+
+
+static void fixup_templates(struct slide *s, StyleSheet *ss)
+{
+	int i;
+	char *t;
+
+	if ( s->st != NULL ) {
+
+		/* FIXME: Horrible to do this using names and string comparisons
+		 *  - what if the stylesheets are in different languages?
+		 * Better would be to have "roles" for common types of template
+		 * and match using those. */
+
+		t = s->st->name;
+
+		for ( i=0; i<ss->n_templates; i++ ) {
+			if ( strcmp(t, ss->templates[i]->name) == 0 ) {
+				s->st = ss->templates[i];
+				break;
+			}
+		}
+	}
+}
+
+
+int replace_stylesheet(struct presentation *p, const char *filename)
+{
+	FILE *fh;
+	struct ds_node *root;
+	struct ds_node *node;
+	StyleSheet *ss;
+	int i;
+
+	fh = fopen(filename, "r");
+	if ( fh == NULL ) return 1;
+
+	root = new_ds_node("root");
+	if ( root == NULL ) return 1;
+
+	if ( deserialize_file(fh, root) ) {
+		fclose(fh);
+		return 1;
+	}
+
+	fclose(fh);
+
+	node = find_node(root, "stylesheet", 0);
+	if ( node == NULL ) {
+		free_ds_tree(root);
+		return 1;
+	}
+	ss = tree_to_stylesheet(node);
+	if ( ss == NULL ) {
+		fprintf(stderr, "Invalid style sheet\n");
+		return 1;
+	}
+	free_ds_tree(root);
+
+	for ( i=0; i<p->num_slides; i++ ) {
+		int n;
+		n = fixup_styles(p->slides[i]->top, ss);
+		printf("Fixed up %i styles\n", n);
+		fixup_templates(p->slides[i], ss);
+	}
+
+	free_stylesheet(p->ss);
+	p->ss = ss;
+
+	return 0;
+}
+
+
 StyleSheet *new_stylesheet()
 {
 	StyleSheet *ss;
diff --git a/src/stylesheet.h b/src/stylesheet.h
index cea714b..6879a95 100644
--- a/src/stylesheet.h
+++ b/src/stylesheet.h
@@ -61,6 +61,7 @@ extern StyleSheet *new_stylesheet();
 extern StyleSheet *load_stylesheet(const char *filename);
 extern void free_stylesheet(StyleSheet *ss);
 extern StyleSheet *default_stylesheet(void);
+extern int replace_stylesheet(struct presentation *p, const char *filename);
 
 extern struct style *new_style(StyleSheet *ss, const char *name);
 extern struct style *default_style(StyleSheet *ss);