83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
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#if ! defined _SCREENSAVER_H
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#define _SCREENSAVER_H
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#include <BeBuild.h>
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#include <DirectWindow.h> // for direct_buffer_info
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#include <image.h>
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#include <Message.h>
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class BView;
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class BScreenSaver
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{
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public:
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BScreenSaver(BMessage *archive, image_id);
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virtual ~BScreenSaver();
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// Return an error if something goes wrong or if you don't
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// like the running environment (lack of 3D acceleration,
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// lack of sound, ...).
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virtual status_t InitCheck();
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// Animation start and stop. The view is not yet visible when
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// StartSaver is called.
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virtual status_t StartSaver(BView *view, bool preview);
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virtual void StopSaver();
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// This hook is called periodically, you should
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// override it to do the drawing. Notice that you
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// should clear the screen when frame == 0 if you
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// don't want to paint over the desktop.
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virtual void Draw(BView *view, int32 frame);
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// These hooks are for direct screen access, the first is
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// called every time the settings change, the second is
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// the equivalent of Draw to be called to access the screen
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// directly. Draw and DirectDraw can be used at the same time.
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virtual void DirectConnected(direct_buffer_info *info);
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virtual void DirectDraw(int32 frame);
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// configuration dialog methods
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virtual void StartConfig(BView *configView);
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virtual void StopConfig();
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// Module should fill this in with metadata
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// example: randomizable = true
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virtual void SupplyInfo(BMessage *info) const;
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// Send all the metadata info to the module
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virtual void ModulesChanged(const BMessage *info);
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// BArchivable like parameter saver method
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virtual status_t SaveState(BMessage *into) const;
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// These methods can be used to control drawing frequency.
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void SetTickSize(bigtime_t ts);
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bigtime_t TickSize() const;
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// These methods can be used to control animation loop cycles
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void SetLoop(int32 on_count, int32 off_count);
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int32 LoopOnCount() const;
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int32 LoopOffCount() const;
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private:
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virtual void _ReservedScreenSaver1();
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virtual void _ReservedScreenSaver2();
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virtual void _ReservedScreenSaver3();
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virtual void _ReservedScreenSaver4();
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virtual void _ReservedScreenSaver5();
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virtual void _ReservedScreenSaver6();
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virtual void _ReservedScreenSaver7();
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virtual void _ReservedScreenSaver8();
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bigtime_t ticksize;
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int32 looponcount;
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int32 loopoffcount;
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uint32 _reservedScreenSaver[6];
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};
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extern "C" _EXPORT BScreenSaver *instantiate_screen_saver(BMessage *msg, image_id id);
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#endif
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