Dogcows Code - chaz/openbox/blob - src/BaseDisplay.hh

   1 // -*- mode: C++; indent-tabs-mode: nil; -*-
   2 // BaseDisplay.hh for Blackbox - an X11 Window manager
   3 // Copyright (c) 2001 - 2002 Sean 'Shaleh' Perry <shaleh@debian.org>
   4 // Copyright (c) 1997 - 2000 Brad Hughes (bhughes@tcac.net)
   5 //
   6 // Permission is hereby granted, free of charge, to any person obtaining a
   7 // copy of this software and associated documentation files (the "Software"),
   8 // to deal in the Software without restriction, including without limitation
   9 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10 // and/or sell copies of the Software, and to permit persons to whom the
  11 // Software is furnished to do so, subject to the following conditions:
  12 //
  13 // The above copyright notice and this permission notice shall be included in
  14 // all copies or substantial portions of the Software.
  15 //
  16 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22 // DEALINGS IN THE SOFTWARE.
  23
  24 #ifndef   __BaseDisplay_hh
  25 #define   __BaseDisplay_hh
  26
  27 extern "C" {
  28 #include <X11/Xlib.h>
  29 #include <X11/Xatom.h>
  30 }
  31
  32 #include <vector>
  33 #include <string>
  34
  35 // forward declaration
  36 class BaseDisplay;
  37 class BGCCache;
  38
  39 #include "Timer.hh"
  40 #include "Util.hh"
  41
  42 class ScreenInfo {
  43 private:
  44   BaseDisplay *basedisplay;
  45   Visual *visual;
  46   Window root_window;
  47   Colormap colormap;
  48
  49   int depth;
  50   unsigned int screen_number;
  51   std::string display_string;
  52   Rect rect;
  53
  54 public:
  55   ScreenInfo(BaseDisplay *d, unsigned int num);
  56
  57   inline BaseDisplay *getBaseDisplay(void) const { return basedisplay; }
  58   inline Visual *getVisual(void) const { return visual; }
  59   inline Window getRootWindow(void) const { return root_window; }
  60   inline Colormap getColormap(void) const { return colormap; }
  61   inline int getDepth(void) const { return depth; }
  62   inline unsigned int getScreenNumber(void) const
  63     { return screen_number; }
  64   inline const Rect& getRect(void) const { return rect; }
  65   inline unsigned int getWidth(void) const { return rect.width(); }
  66   inline unsigned int getHeight(void) const { return rect.height(); }
  67   inline const std::string& displayString(void) const
  68   { return display_string; }
  69 };
  70
  71
  72 class BaseDisplay: public TimerQueueManager {
  73 private:
  74   struct BShape {
  75     bool extensions;
  76     int event_basep, error_basep;
  77   };
  78   BShape shape;
  79
  80 #ifndef   NOCLOBBER
  81   unsigned int MaskList[8];
  82   size_t MaskListLength;
  83 #endif // NOCLOBBER
  84
  85   enum RunState { STARTUP, RUNNING, SHUTDOWN };
  86   RunState run_state;
  87
  88   Display *display;
  89   mutable BGCCache *gccache;
  90
  91   typedef std::vector<ScreenInfo> ScreenInfoList;
  92   ScreenInfoList screenInfoList;
  93   TimerQueue timerList;
  94
  95   const char *display_name, *application_name;
  96
  97   // no copying!
  98   BaseDisplay(const BaseDisplay &);
  99   BaseDisplay& operator=(const BaseDisplay&);
 100
 101 protected:
 102   // pure virtual function... you must override this
 103   virtual void process_event(XEvent *e) = 0;
 104
 105   // the masks of the modifiers which are ignored in button events.
 106   int NumLockMask, ScrollLockMask;
 107
 108
 109 public:
 110   BaseDisplay(const char *app_name, const char *dpy_name = 0);
 111   virtual ~BaseDisplay(void);
 112
 113   const ScreenInfo* getScreenInfo(const unsigned int s) const;
 114
 115   BGCCache *gcCache(void) const;
 116
 117   inline bool hasShapeExtensions(void) const
 118     { return shape.extensions; }
 119   inline bool doShutdown(void) const
 120     { return run_state == SHUTDOWN; }
 121   inline bool isStartup(void) const
 122     { return run_state == STARTUP; }
 123
 124   inline Display *getXDisplay(void) const { return display; }
 125
 126   inline const char *getXDisplayName(void) const
 127     { return display_name; }
 128   inline const char *getApplicationName(void) const
 129     { return application_name; }
 130
 131   inline unsigned int getNumberOfScreens(void) const
 132     { return screenInfoList.size(); }
 133   inline int getShapeEventBase(void) const
 134     { return shape.event_basep; }
 135
 136   inline void shutdown(void) { run_state = SHUTDOWN; }
 137   inline void run(void) { run_state = RUNNING; }
 138
 139   void grabButton(unsigned int button, unsigned int modifiers,
 140                   Window grab_window, bool owner_events,
 141                   unsigned int event_mask, int pointer_mode,
 142                   int keyboard_mode, Window confine_to, Cursor cursor) const;
 143   void ungrabButton(unsigned int button, unsigned int modifiers,
 144                     Window grab_window) const;
 145
 146   void eventLoop(void);
 147
 148   // from TimerQueueManager interface
 149   virtual void addTimer(BTimer *timer);
 150   virtual void removeTimer(BTimer *timer);
 151
 152   // another pure virtual... this is used to handle signals that BaseDisplay
 153   // doesn't understand itself
 154   virtual bool handleSignal(int sig) = 0;
 155 };
 156
 157
 158 #endif // __BaseDisplay_hh