Implemented; sets an image attachment as the GNOME wallpaper.

2003-12-22  David Moore  <davmre@bellsouth.net>

  	* em-popup.c (emp_part_popup_set_background): Implemented; sets an
 	image attachment as the GNOME wallpaper.

  	* em-utils.c (emu_save_part_done): Created a prototype at the top
  	of the file.
  	(em_utils_save_part_to_file): Added; save a message part to a
  	specified file on disk.

svn path=/trunk/; revision=23998

4 files changed, 132 insertions, 3 deletions

diff --git a/mail/ChangeLog b/mail/ChangeLog
index 0575247467..7ff4f83e1e 100644
--- a/mail/ChangeLog
+++ b/mail/ChangeLog
@@ -1,3 +1,13 @@
+2003-12-22  David Moore  <davmre@bellsouth.net>
+  
+  	* em-popup.c (emp_part_popup_set_background): Implemented; sets an 
+ 	image attachment as the GNOME wallpaper.
+  	
+  	* em-utils.c (emu_save_part_done): Created a prototype at the top
+  	of the file.
+  	(em_utils_save_part_to_file): Added; save a message part to a 
+  	specified file on disk.
+ 
 2003-12-18  Rodney Dawes  <dobey@ximian.com>
 
 	* em-message-browser.c (emmb_init): Merge in
diff --git a/mail/em-popup.c b/mail/em-popup.c
index 8312be3770..e1efd4f268 100644
--- a/mail/em-popup.c
+++ b/mail/em-popup.c
@@ -22,8 +22,15 @@
 #include <camel/camel-folder.h>
 #include <camel/camel-mime-message.h>
 #include <camel/camel-string-utils.h>
+#include <camel/camel-mime-utils.h>
+#include <camel/camel-mime-part.h>
 #include <camel/camel-url.h>
 
+#include <gconf/gconf.h>
+#include <gconf/gconf-client.h>
+
+#include <gal/util/e-util.h>
+
 static void emp_standard_menu_factory(EMPopup *emp, EMPopupTarget *target, void *data);
 
 struct _EMPopupFactory {
@@ -602,8 +609,67 @@ emp_part_popup_saveas(GtkWidget *w, EMPopupTarget *t)
 static void
 emp_part_popup_set_background(GtkWidget *w, EMPopupTarget *t)
 {
-	/* set as background ... */
-	printf("UNIMPLEMENTED: set background, but it would be cool, no?\n");
+	GConfClient *gconf;
+	char *str, *filename, *path, *extension;
+	unsigned int i=1;
+	
+	filename = g_strdup(camel_mime_part_get_filename(t->data.part.part));
+	   
+	/* if filename is blank, create a default filename based on MIME type */
+	if (!filename || !filename[0]) {
+		CamelContentType *ct;
+
+		ct = camel_mime_part_get_content_type(t->data.part.part);
+		g_free (filename);
+		filename = g_strdup_printf (_("untitled_image.%s"), ct->subtype);
+	}
+
+	e_filename_make_safe(filename);
+	
+	path = g_build_filename(g_get_home_dir(), ".gnome2", "wallpapers", filename, NULL);
+	
+	extension = strrchr(filename, '.');
+	if (extension)
+		*extension++ = 0;
+	
+	/* if file exists, stick a (number) on the end */
+	while (g_file_test(path, G_FILE_TEST_EXISTS)) {
+		char *name;
+		name = g_strdup_printf(extension?"%s (%d).%s":"%s (%d)", filename, i++, extension);
+		g_free(path);
+		path = g_build_filename(g_get_home_dir(), ".gnome2", "wallpapers", name, NULL);
+		g_free(name);
+	}
+	
+	g_free(filename);
+	
+	if (em_utils_save_part_to_file(w, path, t->data.part.part)) {
+		gconf = gconf_client_get_default();
+		
+		/* if the filename hasn't changed, blank the filename before 
+		*  setting it so that gconf detects a change and updates it */
+		if ((str = gconf_client_get_string(gconf, "/desktop/gnome/background/picture_filename", NULL)) != NULL 
+		     && strcmp (str, path) == 0) {
+			gconf_client_set_string(gconf, "/desktop/gnome/background/picture_filename", "", NULL);
+		}
+		
+		g_free (str);
+		gconf_client_set_string(gconf, "/desktop/gnome/background/picture_filename", path, NULL);
+		
+		/* if GNOME currently doesn't display a picture, set to "wallpaper"
+		 * display mode, otherwise leave it alone */
+		if ((str = gconf_client_get_string(gconf, "/desktop/gnome/background/picture_options", NULL)) == NULL 
+		     || strcmp(str, "none") == 0) {
+			gconf_client_set_string(gconf, "/desktop/gnome/background/picture_options", "wallpaper", NULL);
+		}
+		
+		gconf_client_suggest_sync(gconf, NULL);
+		
+		g_free(str);
+		g_object_unref(gconf);
+	}
+	
+	g_free(path);
 }
 
 static void
diff --git a/mail/em-utils.c b/mail/em-utils.c
index e2da2fa6d3..4e93f2801c 100644
--- a/mail/em-utils.c
+++ b/mail/em-utils.c
@@ -33,6 +33,7 @@
 
 #include <camel/camel-stream-fs.h>
 #include <camel/camel-url-scanner.h>
+#include <camel/camel-file-utils.h>
 
 #include <filter/filter-editor.h>
 
@@ -52,6 +53,7 @@
 #include "em-format-quote.h"
 
 static EAccount *guess_account (CamelMimeMessage *message);
+static void emu_save_part_done (CamelMimePart *part, char *name, int done, void *data);
 
 /**
  * em_utils_prompt_user:
@@ -1387,6 +1389,55 @@ em_utils_save_part(GtkWidget *parent, const char *prompt, CamelMimePart *part)
 	gtk_widget_show((GtkWidget *)filesel);
 }
 
+/**
+ * em_utils_save_part_to_file:
+ * @parent: parent window
+ * @filename: filename to save to
+ * @part: part to save
+ * 
+ * Save a part's content to a specific file
+ * Creates all needed directories and overwrites without prompting
+ *
+ * Returns %TRUE if saving succeeded, %FALSE otherwise
+ **/
+gboolean
+em_utils_save_part_to_file(GtkWidget *parent, const char *filename, CamelMimePart *part) 
+{
+	int done;
+	char *dirname;
+	struct stat st;
+	
+	if (filename[0] == 0)
+		return FALSE;
+	
+	dirname = g_path_get_dirname(filename);
+	if (camel_mkdir(dirname, 0777) == -1) {
+		e_notice(parent, GTK_MESSAGE_ERROR,
+				 _("Cannot save to `%s'\n %s"), filename, g_strerror(errno));
+		g_free(dirname);
+		return FALSE;
+	}
+	g_free(dirname);
+
+	if (access(filename, F_OK) == 0) {
+		if (access(filename, W_OK) != 0) {
+			e_notice(parent, GTK_MESSAGE_ERROR,
+				 _("Cannot save to `%s'\n %s"), filename, g_strerror(errno));
+			return FALSE;
+		}
+	}
+	
+	if (stat(filename, &st) != -1 && !S_ISREG(st.st_mode)) {
+		e_notice(parent, GTK_MESSAGE_ERROR,
+				 _("Error: '%s' exists and is not a regular file"), filename);
+		return FALSE;
+	}
+	
+	/* FIXME: This doesn't handle default charsets */
+	mail_msg_wait(mail_save_part(part, filename, emu_save_part_done, &done));
+	
+	return done;
+}
 
 struct _save_messages_data {
 	CamelFolder *folder;
@@ -2258,7 +2309,8 @@ em_utils_expunge_folder (GtkWidget *parent, CamelFolder *folder)
 
 	camel_object_get(folder, NULL, CAMEL_OBJECT_DESCRIPTION, &name, 0);
 
-	if (!em_utils_prompt_user(parent, GTK_RESPONSE_NO, "/apps/evolution/mail/prompts/expunge",
+	if (!em_utils_prompt_user(parent, GTK_RESPONSE_NO, 
+				  "/apps/evolution/mail/prompts/expunge",
 				  _("This operation will permanently remove all deleted messages "
 				    "in the folder `%s'. If you continue, you "
 				    "will not be able to recover these messages.\n"
diff --git a/mail/em-utils.h b/mail/em-utils.h
index 502b52e19d..f0d8e4249a 100644
--- a/mail/em-utils.h
+++ b/mail/em-utils.h
@@ -86,6 +86,7 @@ void em_utils_reply_to_message_by_uid (struct _CamelFolder *folder, const char *
 void em_utils_post_reply_to_message_by_uid (struct _CamelFolder *folder, const char *uid);
 
 void em_utils_save_part(struct _GtkWidget *parent, const char *prompt, struct _CamelMimePart *part);
+gboolean em_utils_save_part_to_file(struct _GtkWidget *parent, const char *filename, struct _CamelMimePart *part);
 void em_utils_save_messages (struct _GtkWidget *parent, struct _CamelFolder *folder, GPtrArray *uids);
 
 void em_utils_add_address(struct _GtkWidget *parent, const char *email);