[Patch] Resize icon slider for file properties (try no. 3)

[Raphael Bosshard <whistler bluewin ch>]

This is again an attempt to add a resize slider for file icons to the 
file properties dialog, updated to work with nautilus-cvs.

The patch solves following problems:

- Help! I have to use a keyboard. How do I resize file icons like my 
mate next door?
- Help! I want to have several icons exactly the same size. How to do that?
- Help! I want to stretch a file's icon in a folder, just like I do on 
the desktop.

Screenshot: 
http://home.zhwin.ch/~bosshrap/programming/Nautilus%20with%20icon%20scaler.jpg

However; this patch has (still) a problem; the view has to refreshed 
manualy. I still don't know how to force the fm-icon-container to 
reload. Any help from an experienced nautilus hacker on this topic is 
appreciated.

Raphael

diff -ur nautilus/src/file-manager/fm-properties-window.c nautilus-work/src/file-manager/fm-properties-window.c
--- nautilus/src/file-manager/fm-properties-window.c	2005-06-02 18:16:56.000000000 +0200
+++ nautilus-work/src/file-manager/fm-properties-window.c	2005-07-07 21:07:52.905879208 +0200
@@ -78,6 +78,7 @@
 #include <libnautilus-private/nautilus-mime-actions.h>
 #include <libnautilus-private/nautilus-undo.h>
 #include <string.h>
+#include <stdlib.h>
 
 static GHashTable *windows;
 static GHashTable *pending_lists;
@@ -88,6 +89,8 @@
 	
 	GtkNotebook *notebook;
 	GtkWidget *remove_image_button;
+	
+	GtkWidget *icon_size_scaler;
 	GtkWidget *icon_selector_window;
 	
 	GtkTable *basic_table;
@@ -465,6 +468,62 @@
 	gtk_widget_set_sensitive (properties_window->details->remove_image_button, FALSE);
 }
 
+static gboolean
+icon_size_set_initial_value(FMPropertiesWindow *properties_window)
+{
+	GList *l;
+	gdouble value;
+	
+	
+	l = properties_window->details->original_files;
+	if(g_list_length(l) > 1) {
+		value = 1.0;
+	} else {
+		NautilusFile *file;
+		gchar *scale;
+		
+		file = NAUTILUS_FILE (l->data);
+	
+		scale = nautilus_file_get_metadata (file,
+					    NAUTILUS_METADATA_KEY_ICON_SCALE,
+					    NULL);
+		if(scale) {
+			value = atol(scale);		
+			g_free(scale);
+
+		} else {
+			value = 1.0;	
+		}
+						
+	}
+	gtk_range_set_value(GTK_RANGE(properties_window->details->icon_size_scaler), value);
+	
+	return TRUE;
+}
+
+static gboolean 
+icon_scaler_value_changed (GtkRange *icon_scaler,
+		     FMPropertiesWindow *properties_window)
+{
+	GList *l;
+	gdouble value;
+	gchar scale[100];
+	
+	value =  gtk_range_get_value(icon_scaler);	
+	g_ascii_dtostr(scale, 100, value);
+
+	for (l = properties_window->details->original_files; l != NULL; l = l->next) {
+
+		nautilus_file_set_metadata (NAUTILUS_FILE(l->data),
+					    NAUTILUS_METADATA_KEY_ICON_SCALE,
+					    NULL, scale);
+	
+	}
+
+
+	return FALSE;
+}
+
 
 static void  
 fm_properties_window_drag_data_received (GtkWidget *widget, GdkDragContext *context,
@@ -1399,6 +1458,21 @@
 	return GTK_LABEL (label_field);
 }	      
 
+static void
+attach_widget (	GtkTable *table,
+				int row,
+				int column,
+				GtkWidget *widget)
+{
+	gtk_table_attach (table, widget,
+			  column, column + 1,
+			  row, row + 1,
+			  GTK_FILL,
+			  0,
+			  0, 0);
+
+}
+
 static GtkLabel *
 attach_value_label (GtkTable *table,
 	      		  int row,
@@ -2038,6 +2112,20 @@
 	return last_row;
 }
 
+static guint 
+append_title_and_widget (FMPropertiesWindow *window,
+					GtkTable *table,
+					const char *title,
+					GtkWidget *widget)
+{
+	guint last_row;
+	
+	last_row = append_title_field(table, title, NULL);
+	attach_widget (table, last_row, VALUE_COLUMN, widget);
+
+	return last_row;
+}     
+
 static guint
 append_title_and_ellipsizing_value (FMPropertiesWindow *window,
 				    GtkTable *table,
@@ -2237,6 +2325,14 @@
 }
 
 static gboolean
+should_show_icon_scaler (FMPropertiesWindow *window)
+{
+	/*Add conditions here */
+
+	return TRUE;
+}
+
+static gboolean
 should_show_file_type (FMPropertiesWindow *window) 
 {
 	/* The trash on the desktop is one-of-a-kind */
@@ -2332,6 +2428,9 @@
 	gtk_container_add (GTK_CONTAINER (icon_aligner), icon_pixmap_widget);
 	gtk_box_pack_start (GTK_BOX (hbox), icon_aligner, TRUE, TRUE, 0);
 
+
+
+
 	/* Name label */
 	if (is_multi_file_window (window)) {
 		name_label = gtk_label_new_with_mnemonic (_("Names:"));
@@ -2343,6 +2442,15 @@
 	gtk_box_pack_end (GTK_BOX (hbox), name_label, FALSE, FALSE, 0);
 	window->details->name_label = name_label;
 
+ 	/* Icon scaler*/
+ 	window->details->icon_size_scaler = gtk_hscale_new_with_range (	0.5, 7.0,	0.5);		
+ 	gtk_scale_set_draw_value(GTK_SCALE(window->details->icon_size_scaler), FALSE);
+ 
+ 	icon_size_set_initial_value(window);
+	g_signal_connect(window->details->icon_size_scaler, "value-changed",
+ 			 G_CALLBACK (icon_scaler_value_changed), window);
+
+
 	/* Name field */
 	window->details->name_field = NULL;
 	update_name_field (window);
@@ -2417,6 +2525,14 @@
 					 FALSE);
 	}
 
+
+	/* Scale file icon */
+	if (should_show_icon_scaler (window)){
+		gtk_widget_show(window->details->icon_size_scaler);
+		append_title_and_widget (window, table, _("Icon Size:"),
+					window->details->icon_size_scaler);
+	}
+
 	if (should_show_custom_icon_buttons (window)) {
 		GtkWidget *button_box;
 		GtkWidget *temp_button;