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// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
#ifndef __display_hh
#define __display_hh
extern "C" {
#include <X11/Xlib.h>
}
namespace otk {
class ScreenInfo;
class RenderControl;
class Display;
//! The display instance for the library
extern Display *display;
//! Manages a single X11 display.
class Display
{
private:
//! The X display
::Display *_display;
//! Does the display have the XKB extension?
bool _xkb;
//! Base for events for the XKB extension
int _xkb_event_basep;
//! Does the display have the Shape extension?
bool _shape;
//! Base for events for the Shape extension
int _shape_event_basep;
//! Does the display have the Xinerama extension?
bool _xinerama;
//! Base for events for the Xinerama extension
int _xinerama_event_basep;
//! A list of all possible combinations of keyboard lock masks
unsigned int _mask_list[8];
//! The value of the mask for the NumLock modifier
unsigned int _num_lock_mask;
//! The value of the mask for the ScrollLock modifier
unsigned int _scroll_lock_mask;
//! The key codes for the modifier keys
XModifierKeymap *_modmap;
//! The number of requested grabs on the display
int _grab_count;
//! When true, X errors will be ignored. Use with care.
bool _ignore_errors;
//! A list of information for all screens on the display
ScreenInfo** _screeninfo_list;
//! A list of RenderControl objects, which are used for all graphics on a
//! screen
RenderControl** _rendercontrol_list;
public:
//! Initializes the class, opens the X display
/*!
The DISPLAY environment variable is used to choose the display.
@see Display::display
*/
Display();
//! Destroys the class, closes the X display
~Display();
//! Gets information on a specific screen
/*!
Returns a ScreenInfo class, which contains information for a screen on the
display.
@param snum The screen number of the screen to retrieve info on
@return Info on the requested screen, in a ScreenInfo class
*/
const ScreenInfo* screenInfo(int snum) const;
//! Find a ScreenInfo based on a root window
const ScreenInfo* findScreen(Window root) const;
//! Gets the RenderControl for a screen
const RenderControl *renderControl(int snum) const;
//! Returns if the display has the xkb extension available
inline bool xkb() const { return _xkb; }
//! Returns the xkb extension's event base
inline int xkbEventBase() const { return _xkb_event_basep; }
//! Returns if the display has the shape extension available
inline bool shape() const { return _shape; }
//! Returns the shape extension's event base
inline int shapeEventBase() const { return _shape_event_basep; }
//! Returns if the display has the xinerama extension available
inline bool xinerama() const { return _xinerama; }
inline unsigned int numLockMask() const { return _num_lock_mask; }
inline unsigned int scrollLockMask() const { return _scroll_lock_mask; }
const XModifierKeymap *modifierMap() const { return _modmap; }
inline ::Display* operator*() const { return _display; }
//! When true, X errors will be ignored.
inline bool ignoreErrors() const { return _ignore_errors; }
//! Set whether X errors should be ignored. Use with care.
void setIgnoreErrors(bool t);
//! Grabs the display
void grab();
//! Ungrabs the display
void ungrab();
/* TEMPORARY */
void grabButton(unsigned int button, unsigned int modifiers,
Window grab_window, bool owner_events,
unsigned int event_mask, int pointer_mode,
int keyboard_mode, Window confine_to, Cursor cursor,
bool allow_scroll_lock) const;
void ungrabButton(unsigned int button, unsigned int modifiers,
Window grab_window) const;
void grabKey(unsigned int keycode, unsigned int modifiers,
Window grab_window, bool owner_events,
int pointer_mode, int keyboard_mode,
bool allow_scroll_lock) const;
void ungrabKey(unsigned int keycode, unsigned int modifiers,
Window grab_window) const;
};
}
#endif // __display_hh
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