f48a5fe387
screens into CPrimaryScreen and merged common code from secondary screens into CSecondaryScreen. changed is-a relationship to a has-a between the primary and secondary screen classes and the generic platform dependent screen class to avoid multiple inheritance of implementation. also standardized the interface for those generic screen classes. adding a platform now involves implementing simpler interfaces: IScreen for the generic screen, IScreenEventHandler and some methods of CPrimaryScreen for the primary screen, and IScreenEventHandler and some methods of CSecondaryScreen for the secondary screen. did X11 platform but not win32 platform.
66 lines
1.9 KiB
C++
66 lines
1.9 KiB
C++
#ifndef ISCREEN_H
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#define ISCREEN_H
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#include "IInterface.h"
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#include "ClipboardTypes.h"
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class IClipboard;
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// the interface for platform dependent screen implementations. each
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// platform will derive a type from IScreen for interaction with the
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// platform's screen that's common to primary and secondary screens.
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class IScreen : public IInterface {
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public:
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// manipulators
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// open the screen
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virtual void open() = 0;
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// runs an event loop and returns when exitMainLoop() is called.
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// must be called between open() and close().
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virtual void mainLoop() = 0;
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// force mainLoop() to return
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virtual void exitMainLoop() = 0;
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// close the screen
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virtual void close() = 0;
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// set the contents of the clipboard
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virtual bool setClipboard(ClipboardID, const IClipboard*) = 0;
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// check clipboard ownership and notify IScreenReceiver (set through
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// some other interface) if any changed
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virtual void checkClipboards() = 0;
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// open/close the screen saver. if notify is true then this object
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// will call IScreenEventHandler's onScreenSaver() when the screensaver
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// activates or deactivates until close. if notify is false then
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// the screen saver is disabled on open and restored on close.
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virtual void openScreenSaver(bool notify) = 0;
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virtual void closeScreenSaver() = 0;
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// activate or deactivate the screen saver
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virtual void screensaver(bool activate) = 0;
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// FIXME -- need explanation
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virtual void syncDesktop() = 0;
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// accessors
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// get the contents of the clipboard
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virtual bool getClipboard(ClipboardID, IClipboard*) const = 0;
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// get the shape of the screen
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virtual void getShape(SInt32& x, SInt32& y,
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SInt32& w, SInt32& h) const = 0;
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// get the current cursor coordinates
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virtual void getCursorPos(SInt32& x, SInt32& y) const = 0;
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// get the cursor center position
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// FIXME -- need better explanation
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virtual void getCursorCenter(SInt32& x, SInt32& y) const = 0;
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};
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#endif
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