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

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2 #ifndef   __client_hh
   3 #define   __client_hh
   4
   5 /*! @file client.hh
   6   @brief The OBClient class maintains the state of a client window by handling
   7   property changes on the window and some client messages
   8 */
   9
  10 extern "C" {
  11 #include <X11/Xlib.h>
  12
  13 #ifdef    SHAPE
  14 #include <X11/extensions/shape.h>
  15 #endif // SHAPE
  16 }
  17
  18 #include <string>
  19
  20 #include "otk/strut.hh"
  21 #include "otk/rect.hh"
  22 #include "otk/eventhandler.hh"
  23
  24 namespace ob {
  25
  26 class OBFrame;
  27
  28 //! Maintains the state of a client window.
  29 /*!
  30   OBClient maintains the state of a client window. The state consists of the
  31   hints that the application sets on the window, such as the title, or window
  32   gravity.
  33   <p>
  34   OBClient also manages client messages for the client window. When the
  35   application (or any application) requests something to be changed for the
  36   client, it will call the ActionHandler (for client messages) or update the
  37   class' member variables and call whatever is nessary to complete the
  38   change (such as causing a redraw of the titlebar after the title is changed).
  39 */
  40 class OBClient : public otk::OtkEventHandler {
  41 public:
  42
  43   //! The frame window which decorates around the client window
  44   OBFrame *frame;
  45
  46   //! Possible window types
  47   enum WindowType { Type_Desktop, //!< A desktop (bottom-most window)
  48                     Type_Dock,    //!< A dock bar/panel window
  49                     Type_Toolbar, //!< A toolbar window, pulled off an app
  50                     Type_Menu,    //!< A sticky menu from an app
  51                     Type_Utility, //!< A small utility window such as a palette
  52                     Type_Splash,  //!< A splash screen window
  53                     Type_Dialog,  //!< A dialog window
  54                     Type_Normal   //!< A normal application window
  55   };
  56
  57   //! Possible flags for MWM Hints (defined by Motif 2.0)
  58   enum MwmFlags { MwmFlag_Functions   = 1 << 0, //!< The MMW Hints define funcs
  59                   MwmFlag_Decorations = 1 << 1  //!< The MWM Hints define decor
  60   };
  61
  62   //! Possible functions for MWM Hints (defined by Motif 2.0)
  63   enum MwmFunctions { MwmFunc_All      = 1 << 0, //!< All functions
  64                       MwmFunc_Resize   = 1 << 1, //!< Allow resizing
  65                       MwmFunc_Move     = 1 << 2, //!< Allow moving
  66                       MwmFunc_Iconify  = 1 << 3, //!< Allow to be iconfied
  67                       MwmFunc_Maximize = 1 << 4  //!< Allow to be maximized
  68                       //MwmFunc_Close    = 1 << 5 //!< Allow to be closed
  69   };
  70
  71   //! Possible decorations for MWM Hints (defined by Motif 2.0)
  72   enum MemDecorations { MwmDecor_All      = 1 << 0, //!< All decorations
  73                         MwmDecor_Border   = 1 << 1, //!< Show a border
  74                         MwmDecor_Handle   = 1 << 2, //!< Show a handle (bottom)
  75                         MwmDecor_Title    = 1 << 3, //!< Show a titlebar
  76                         //MwmDecor_Menu     = 1 << 4, //!< Show a menu
  77                         MwmDecor_Iconify  = 1 << 5, //!< Show an iconify button
  78                         MwmDecor_Maximize = 1 << 6  //!< Show a maximize button
  79   };
  80
  81   //! The things the user can do to the client window
  82   enum Function { Func_Resize   = 1 << 0, //!< Allow resizing
  83                   Func_Move     = 1 << 1, //!< Allow moving
  84                   Func_Iconify  = 1 << 2, //!< Allow to be iconified
  85                   Func_Maximize = 1 << 3, //!< Allow to be maximized
  86                   Func_Close    = 1 << 4  //!< Allow to be closed
  87   };
  88   //! Holds a bitmask of OBClient::Function values
  89   typedef unsigned char FunctionFlags;
  90
  91   //! The decorations the client window wants to be displayed on it
  92   enum Decoration { Decor_Titlebar = 1 << 0, //!< Display a titlebar
  93                     Decor_Handle   = 1 << 1, //!< Display a handle (bottom)
  94                     Decor_Border   = 1 << 2, //!< Display a border
  95                     Decor_Iconify  = 1 << 3, //!< Display an iconify button
  96                     Decor_Maximize = 1 << 4, //!< Display a maximize button
  97                     Decor_Sticky   = 1 << 5, //!< Display a sticky button
  98                     Decor_Close    = 1 << 6  //!< Display a close button
  99   };
 100   //! Holds a bitmask of OBClient::Decoration values
 101   typedef unsigned char DecorationFlags;
 102
 103   //! The MWM Hints as retrieved from the window property
 104   /*!
 105     This structure only contains 3 elements, even though the Motif 2.0
 106     structure contains 5. We only use the first 3, so that is all gets defined.
 107   */
 108   typedef struct MwmHints {
 109     //! The number of elements in the OBClient::MwmHints struct
 110     static const unsigned int elements = 3;
 111     unsigned long flags;      //!< A bitmask of OBClient::MwmFlags values
 112     unsigned long functions;  //!< A bitmask of OBClient::MwmFunctions values
 113     unsigned long decorations;//!< A bitmask of OBClient::MwmDecorations values
 114   };
 115
 116   //! Possible actions that can be made with the _NET_WM_STATE client message
 117   enum StateAction { State_Remove = 0, //!< _NET_WM_STATE_REMOVE
 118                      State_Add,        //!< _NET_WM_STATE_ADD
 119                      State_Toggle      //!< _NET_WM_STATE_TOGGLE
 120   };
 121
 122   //! The event mask to grab on client windows
 123   static const long event_mask = PropertyChangeMask | FocusChangeMask;
 124
 125   //! The number of unmap events to ignore on the window
 126   int ignore_unmaps;
 127
 128 private:
 129   //! The screen number on which the client resides
 130   int      _screen;
 131
 132   //! The actual window that this class is wrapping up
 133   Window   _window;
 134
 135   //! The id of the group the window belongs to
 136   Window   _group;
 137
 138   // XXX: transient_for, transients
 139
 140   //! The desktop on which the window resides (0xffffffff for all desktops)
 141   unsigned long _desktop;
 142
 143   //! Normal window title
 144   std::string  _title; // XXX: Have to keep track if this string is Utf8 or not
 145   //! Window title when iconifiged
 146   std::string  _icon_title;
 147
 148   //! The application that created the window
 149   std::string  _app_name;
 150   //! The class of the window, can used for grouping
 151   std::string  _app_class;
 152
 153   //! The type of window (what its function is)
 154   WindowType   _type;
 155
 156   //! Position and size of the window (relative to the root window)
 157   otk::Rect    _area;
 158
 159   //! Width of the border on the window.
 160   /*!
 161     The window manager will set this to 0 while the window is being managed,
 162     but needs to restore it afterwards, so it is saved here.
 163   */
 164   int _border_width;
 165
 166   //! The minimum width of the client window
 167   /*!
 168     If the min is > the max, then the window is not resizable
 169   */
 170   int _min_x;
 171   //! The minimum height of the client window
 172   /*!
 173     If the min is > the max, then the window is not resizable
 174   */
 175   int _min_y;
 176   //! The maximum width of the client window
 177   /*!
 178     If the min is > the max, then the window is not resizable
 179   */
 180   int _max_x;
 181   //! The maximum height of the client window
 182   /*!
 183     If the min is > the max, then the window is not resizable
 184   */
 185   int _max_y;
 186   //! The size of increments to resize the client window by (for the width)
 187   int _inc_x;
 188   //! The size of increments to resize the client window by (for the height)
 189   int _inc_y;
 190   //! The base width of the client window
 191   /*!
 192     This value should be subtracted from the window's actual width when
 193     displaying its size to the user, or working with its min/max width
 194   */
 195   int _base_x;
 196   //! The base height of the client window
 197   /*!
 198     This value should be subtracted from the window's actual height when
 199     displaying its size to the user, or working with its min/max height
 200   */
 201   int _base_y;
 202
 203   //! Where to place the decorated window in relation to the undecorated window
 204   int _gravity;
 205
 206   //! The state of the window, one of WithdrawnState, IconicState, or
 207   //! NormalState
 208   long _wmstate;
 209
 210   //! Was the window's position requested by the application? if not, we should
 211   //! place the window ourselves when it first appears
 212   bool _positioned;
 213
 214   //! Can the window receive input focus?
 215   bool _can_focus;
 216   //! Urgency flag
 217   bool _urgent;
 218   //! Notify the window when it receives focus?
 219   bool _focus_notify;
 220
 221   //! The window uses shape extension to be non-rectangular?
 222   bool _shaped;
 223
 224   //! The window is modal, so it must be processed before any windows it is
 225   //! related to can be focused
 226   bool _modal;
 227   //! Only the window's titlebar is displayed
 228   bool _shaded;
 229   //! The window is iconified
 230   bool _iconic;
 231   //! The window is maximized to fill the screen vertically
 232   bool _max_vert;
 233   //! The window is maximized to fill the screen horizontally
 234   bool _max_horz;
 235   //! The window is a 'fullscreen' window, and should be on top of all others
 236   bool _fullscreen;
 237   //! The window should be on top of other windows of the same type
 238   bool _floating;
 239
 240   //! A bitmask of values in the OBClient::Decoration enum
 241   /*!
 242     The values in the variable are the decorations that the client wants to be
 243     displayed around it.
 244   */
 245   DecorationFlags _decorations;
 246
 247   //! A bitmask of values in the OBClient::Function enum
 248   /*!
 249     The values in the variable specify the ways in which the user is allowed to
 250     modify this window.
 251   */
 252   FunctionFlags _functions;
 253
 254   //! Retrieves the desktop hint's value and sets OBClient::_desktop
 255   void getDesktop();
 256   //! Retrieves the window's type and sets OBClient::_type
 257   void getType();
 258   //! Gets the MWM Hints and adjusts OBClient::_functions and
 259   //! OBClient::_decorations
 260   void getMwmHints();
 261   //! Gets the position and size of the window and sets OBClient::_area
 262   void getArea();
 263   //! Gets the net_state hint and sets the boolean flags for any states set in
 264   //! the hint
 265   void getState();
 266   //! Determines if the window uses the Shape extension and sets
 267   //! OBClient::_shaped
 268   void getShaped();
 269
 270   //! Sets the wm_state to the specified value
 271   void setWMState(long state);
 272   //! Sends the window to the specified desktop
 273   void setDesktop(long desktop);
 274   //! Adjusts the window's net_state
 275   void setState(StateAction action, long data1, long data2);
 276
 277   //! Update the protocols that the window supports and adjusts things if they
 278   //! change
 279   void updateProtocols();
 280   //! Updates the WMNormalHints and adjusts things if they change
 281   void updateNormalHints();
 282   //! Updates the WMHints and adjusts things if they change
 283   void updateWMHints();
 284   //! Updates the window's title
 285   void updateTitle();
 286   //! Updates the window's icon title
 287   void updateIconTitle();
 288   //! Updates the window's application name and class
 289   void updateClass();
 290   // XXX: updateTransientFor();
 291
 292 public:
 293   //! Constructs a new OBClient object around a specified window id
 294   /*!
 295     @param window The window id that the OBClient class should handle
 296     @param screen The screen on which the window resides
 297   */
 298   OBClient(int screen, Window window);
 299   //! Destroys the OBClient object
 300   virtual ~OBClient();
 301
 302   //! Returns the screen on which the clien resides
 303   inline int screen() const { return _screen; }
 304
 305   //! Returns the window id that the OBClient object is handling
 306   inline Window window() const { return _window; }
 307
 308   //! Returns the type of the window, one of the OBClient::WindowType values
 309   inline WindowType type() const { return _type; }
 310   //! Returns the desktop on which the window resides
 311   /*!
 312     This value is a 0-based index.<br>
 313     A value of 0xffffffff indicates that the window exists on all desktops.
 314   */
 315   inline unsigned long desktop() const { return _desktop; }
 316   //! Returns the window's title
 317   inline const std::string &title() const { return _title; }
 318   //! Returns the window's title when it is iconified
 319   inline const std::string &iconTitle() const { return _title; }
 320   //! Returns the application's name to whom the window belongs
 321   inline const std::string &appName() const { return _app_name; }
 322   //! Returns the class of the window
 323   inline const std::string &appClass() const { return _app_class; }
 324   //! Returns if the window can be focused
 325   /*!
 326     @return true if the window can receive focusl otherwise, false
 327   */
 328   inline bool canFocus() const { return _can_focus; }
 329   //! Returns if the window has indicated that it needs urgent attention
 330   inline bool urgent() const { return _urgent; }
 331   //! Returns if the window wants to be notified when it receives focus
 332   inline bool focusNotify() const { return _focus_notify; }
 333   //! Returns if the window uses the Shape extension
 334   inline bool shaped() const { return _shaped; }
 335   //! Returns the window's gravity
 336   /*!
 337     This value determines where to place the decorated window in relation to
 338     its position without decorations.<br>
 339     One of: NorthWestGravity, SouthWestGravity, EastGravity, ...,
 340     SouthGravity, StaticGravity, ForgetGravity
 341   */
 342   inline int gravity() const { return _gravity; }
 343   //! Returns if the application requested the initial position for the window
 344   /*!
 345     If the application did not request a position (this function returns false)
 346     then the window should be placed intelligently by the window manager
 347     initially
 348   */
 349   inline bool positionRequested() const { return _positioned; }
 350   //! Returns the decorations that the client window wishes to be displayed on
 351   //! it
 352   inline DecorationFlags decorations() const { return _decorations; }
 353   //! Returns the functions that the user can perform on the window
 354   inline FunctionFlags funtions() const { return _functions; }
 355
 356   //! Returns if the window is modal
 357   /*!
 358     If the window is modal, then no other windows that it is related to can get
 359     focus while it exists/remains modal.
 360   */
 361   inline bool modal() const { return _modal; }
 362   //! Returns if the window is shaded
 363   /*!
 364     When the window is shaded, only its titlebar is visible, the client itself
 365     is not mapped
 366   */
 367   inline bool shaded() const { return _shaded; }
 368   //! Returns if the window is iconified
 369   /*!
 370     When the window is iconified, it is not visible at all (except in iconbars/
 371     panels/etc that want to show lists of iconified windows
 372   */
 373   inline bool iconic() const { return _iconic; }
 374   //! Returns if the window is maximized vertically
 375   inline bool maxVert() const { return _max_vert; }
 376   //! Returns if the window is maximized horizontally
 377   inline bool maxHorz() const { return _max_horz; }
 378   //! Returns if the window is fullscreen
 379   /*!
 380     When the window is fullscreen, it is kept above all others
 381   */
 382   inline bool fullscreen() const { return _fullscreen; }
 383   //! Returns if the window is floating
 384   /*!
 385     When the window is floating, it is kept above all others in the same
 386     stacking layer as it
 387   */
 388   inline bool floating() const { return _floating; }
 389
 390   //! Returns the window's border width
 391   /*!
 392     The border width is set to 0 when the client becomes managed, but the
 393     border width is stored here so that it can be restored to the client window
 394     when it is unmanaged later.
 395   */
 396   inline int borderWidth() const { return _border_width; }
 397   //! Returns the minimum width of the client window
 398   /*!
 399     If the min is > the max, then the window is not resizable
 400   */
 401   inline int minX() const { return _min_x; }
 402   //! Returns the minimum height of the client window
 403   /*!
 404     If the min is > the max, then the window is not resizable
 405   */
 406   inline int minY() const { return _min_y; }
 407   //! Returns the maximum width of the client window
 408   /*!
 409     If the min is > the max, then the window is not resizable
 410   */
 411   inline int maxX() const { return _max_x; }
 412   //! Returns the maximum height of the client window
 413   /*!
 414     If the min is > the max, then the window is not resizable
 415   */
 416   inline int maxY() const { return _max_y; }
 417   //! Returns the increment size for resizing the window (for the width)
 418   inline int incrementX() const { return _inc_x; }
 419   //! Returns the increment size for resizing the window (for the height)
 420   inline int incrementY() const { return _inc_y; }
 421   //! Returns the base width of the window
 422   /*!
 423     This value should be subtracted from the window's actual width when
 424     displaying its size to the user, or working with its min/max width
 425   */
 426   inline int baseX() const { return _base_x; }
 427   //! Returns the base height of the window
 428   /*!
 429     This value should be subtracted from the window's actual height when
 430     displaying its size to the user, or working with its min/max height
 431   */
 432   inline int baseY() const { return _base_y; }
 433
 434   //! Returns the position and size of the client relative to the root window
 435   inline const otk::Rect &area() const { return _area; }
 436
 437   virtual void propertyHandler(const XPropertyEvent &e);
 438
 439   virtual void clientMessageHandler(const XClientMessageEvent &e);
 440
 441   virtual void shapeHandler(const XShapeEvent &e);
 442
 443   //! Changes the stored positions and size of the OBClient window
 444   /*!
 445     This does not actually change the physical geometry, that needs to be done
 446     before/after setting this value to keep it in sync
 447   */
 448   void setArea(const otk::Rect &area);
 449 };
 450
 451 }
 452
 453 #endif // __client_hh