* Big time cleanup of the screen saver stuff, not yet finished yet, though.

Renamed lots of things, like ScreenSaverThread to ScreenSaverRunner,
  refactored code, etc. Much cleaner interfaces and code.
* Fixed a couple of bugs and in the add-on handling, especially some settings
  related bugs (ie. testing a screen saver will now use its latest settings,
  etc.).
* Correctly implemented DPMS support in ScreenSaverPrefs and the ScreenSaver
  preferences application - screen_blanker still ignores them, though.
* It's not yet font sensitive either.
* Changed the input_server add-on to not switch to the screen blanker immediately
  when it's in the "blank corner" - doesn't seem to work yet, though (only tested
  under Qemu).
* Correctly implemented the "preview" function (before, a screen saver would
  never know it rendered a preview).
* Evaluates the return value of BScreenSaver::StartSaver().
* The screen saver thread is no longer killed without notice - it's now
  always shut down properly.
* Made the code more robust against failure.
* Introduced some new bugs as well (the screen saver list view doesn't jump to
  the selection anymore, for some reason), those will be fixed later (as the
  remaining issues).
* Probably some more I forgot about.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17731 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/screen_saver/ScreenSaverRunner.h

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2003-2006, Haiku.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Michael Phipps
+ *		Jérôme Duval, [email protected]
+ *		Axel Dörfler, [email protected]
+ */
+#ifndef SCREEN_SAVER_RUNNER_H
+#define SCREEN_SAVER_RUNNER_H
+
+
+#include <SupportDefs.h>
+#include <DirectWindow.h>
+
+class BScreenSaver;
+class BView;
+class ScreenSaverPrefs;
+
+
+class ScreenSaverRunner {
+	public:
+		ScreenSaverRunner(BWindow* window, BView* view,
+			bool preview, ScreenSaverPrefs& prefs);
+		~ScreenSaverRunner();
+
+		BScreenSaver* ScreenSaver() const;
+		bool HasStarted() const;
+
+		status_t Run();
+		void Quit();
+
+		void Suspend();
+		void Resume();
+
+	private:
+		void _LoadAddOn();
+		void _CleanUp();
+		static status_t _ThreadFunc(void* data);
+		void _Run();
+
+		BScreenSaver*		fSaver;
+		BWindow*			fWindow;
+		BDirectWindow*		fDirectWindow;
+		BView*				fView;
+		ScreenSaverPrefs&	fPrefs;
+		bool				fPreview;
+		bool				fHasStarted;
+
+		image_id			fAddonImage;
+		thread_id			fThread;
+		volatile bool		fQuitting;
+};
+
+#endif //SCREEN_SAVER_THREAD_H