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// -*- mode: C++; indent-tabs-mode: nil; -*-
#ifndef __BaseDisplay_hh
#define __BaseDisplay_hh
extern "C" {
#include <X11/Xlib.h>
#include <X11/Xatom.h>
}
#include <vector>
#include <string>
// forward declaration
class BaseDisplay;
class BGCCache;
#include "timer.hh"
#include "util.hh"
class ScreenInfo {
private:
BaseDisplay *basedisplay;
Visual *visual;
Window root_window;
Colormap colormap;
int depth;
unsigned int screen_number;
std::string display_string;
Rect rect;
#ifdef XINERAMA
RectList xinerama_areas;
bool xinerama_active;
#endif
public:
ScreenInfo(BaseDisplay *d, unsigned int num);
inline BaseDisplay *getBaseDisplay(void) const { return basedisplay; }
inline Visual *getVisual(void) const { return visual; }
inline Window getRootWindow(void) const { return root_window; }
inline Colormap getColormap(void) const { return colormap; }
inline int getDepth(void) const { return depth; }
inline unsigned int getScreenNumber(void) const
{ return screen_number; }
inline const Rect& getRect(void) const { return rect; }
inline unsigned int getWidth(void) const { return rect.width(); }
inline unsigned int getHeight(void) const { return rect.height(); }
inline const std::string& displayString(void) const
{ return display_string; }
#ifdef XINERAMA
inline const RectList &getXineramaAreas(void) const { return xinerama_areas; }
inline bool isXineramaActive(void) const { return xinerama_active; }
#endif
};
class BaseDisplay: public TimerQueueManager {
private:
struct BShape {
bool extensions;
int event_basep, error_basep;
};
BShape shape;
#ifdef XINERAMA
struct BXinerama {
bool extensions;
int event_basep, error_basep;
int major, minor; // version
};
BXinerama xinerama;
#endif // XINERAMA
unsigned int MaskList[8];
size_t MaskListLength;
enum RunState { STARTUP, RUNNING, SHUTDOWN };
RunState run_state;
Display *display;
mutable BGCCache *gccache;
typedef std::vector<ScreenInfo> ScreenInfoList;
ScreenInfoList screenInfoList;
TimerQueue timerList;
const char *display_name, *application_name;
// no copying!
BaseDisplay(const BaseDisplay &);
BaseDisplay& operator=(const BaseDisplay&);
protected:
// pure virtual function... you must override this
virtual void process_event(XEvent *e) = 0;
// the masks of the modifiers which are ignored in button events.
int NumLockMask, ScrollLockMask;
public:
BaseDisplay(const char *app_name, const char *dpy_name = 0);
virtual ~BaseDisplay(void);
const ScreenInfo* getScreenInfo(const unsigned int s) const;
BGCCache *gcCache(void) const;
inline bool hasShapeExtensions(void) const
{ return shape.extensions; }
#ifdef XINERAMA
inline bool hasXineramaExtensions(void) const
{ return xinerama.extensions; }
#endif // XINERAMA
inline bool doShutdown(void) const
{ return run_state == SHUTDOWN; }
inline bool isStartup(void) const
{ return run_state == STARTUP; }
inline Display *getXDisplay(void) const { return display; }
inline const char *getXDisplayName(void) const
{ return display_name; }
inline const char *getApplicationName(void) const
{ return application_name; }
inline unsigned int getNumberOfScreens(void) const
{ return screenInfoList.size(); }
inline int getShapeEventBase(void) const
{ return shape.event_basep; }
#ifdef XINERAMA
inline int getXineramaMajorVersion(void) const
{ return xinerama.major; }
#endif // XINERAMA
inline void shutdown(void) { run_state = SHUTDOWN; }
inline void run(void) { run_state = RUNNING; }
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 eventLoop(void);
// from TimerQueueManager interface
virtual void addTimer(BTimer *timer);
virtual void removeTimer(BTimer *timer);
// another pure virtual... this is used to handle signals that BaseDisplay
// doesn't understand itself
virtual bool handleSignal(int sig) = 0;
};
#endif // __BaseDisplay_hh
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