File: BaseDisplay.hh

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// BaseDisplay.hh for Blackbox - an X11 Window manager
// Copyright (c) 1997 - 2000 Brad Hughes (bhughes@tcac.net)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

#ifndef   __BaseDisplay_hh
#define   __BaseDisplay_hh

#include <X11/Xlib.h>
#include <X11/Xatom.h>

// forward declaration
class BaseDisplay;
class ScreenInfo;

#include "LinkedList.hh"
#include "Timer.hh"

#define AttribShaded      (1l << 0)
#define AttribMaxHoriz    (1l << 1)
#define AttribMaxVert     (1l << 2)
#define AttribOmnipresent (1l << 3)
#define AttribWorkspace   (1l << 4)
#define AttribStack       (1l << 5)
#define AttribDecoration  (1l << 6)

#define StackTop          (0)
#define StackNormal       (1)
#define StackBottom       (2)

#define DecorNone         (0)
#define DecorNormal       (1)
#define DecorTiny         (2)
#define DecorTool         (3)

typedef struct _blackbox_hints
{
	unsigned long flags, attrib, workspace, stack, decoration;
}
BlackboxHints;

typedef struct _blackbox_attributes
{
	unsigned long flags, attrib, workspace, stack;
	int premax_x, premax_y;
	unsigned int premax_w, premax_h;
}
BlackboxAttributes;

#define PropBlackboxHintsElements      (5)
#define PropBlackboxAttributesElements (8)

#ifndef    __EMX__
void bexec(const char *, char *);
#endif // !__EMX__

char *bstrdup(const char *);
template <typename Z> inline Z min(Z a, Z b)
{
	return ((a < b) ? a : b);
}
template <typename Z> inline Z max(Z a, Z b)
{
	return ((a > b) ? a : b);
}

class BaseDisplay
{
private:
	struct cursor
	{
		Cursor session, move, ll_angle, lr_angle;
	}
	cursor;

	struct shape
	{
		Bool extensions;
		int event_basep, error_basep;
	}
	shape;

	Atom xa_wm_colormap_windows, xa_wm_protocols, xa_wm_state,
	xa_wm_delete_window, xa_wm_take_focus, xa_wm_change_state,
	motif_wm_hints;

	// NETAttributes
	Atom blackbox_attributes, blackbox_change_attributes, blackbox_hints;

	// NETStructureMessages
	Atom blackbox_structure_messages, blackbox_notify_startup,
	blackbox_notify_window_add, blackbox_notify_window_del,
	blackbox_notify_window_focus, blackbox_notify_current_workspace,
	blackbox_notify_workspace_count, blackbox_notify_window_raise,
	blackbox_notify_window_lower;

	// message_types for client -> wm messages
	Atom blackbox_change_workspace, blackbox_change_window_focus,
	blackbox_cycle_window_focus;

#ifdef    NEWWMSPEC

	// root window properties
	Atom net_supported, net_client_list, net_client_list_stacking,
	net_number_of_desktops, net_desktop_geometry, net_desktop_viewport,
	net_current_desktop, net_desktop_names, net_active_window, net_workarea,
	net_supporting_wm_check, net_virtual_roots;

	// root window messages
	Atom net_close_window, net_wm_moveresize;

	// application window properties
	Atom net_properties, net_wm_name, net_wm_desktop, net_wm_window_type,
	net_wm_state, net_wm_strut, net_wm_icon_geometry, net_wm_icon, net_wm_pid,
	net_wm_handled_icons;

	// application protocols
	Atom net_wm_ping;

#endif // NEWWMSPEC

	Bool _startup, _shutdown;
	Display *display;
	LinkedList<ScreenInfo> *screenInfoList;
	LinkedList<BTimer> *timerList;

	char *display_name, *application_name;
	int number_of_screens, server_grabs, colors_per_channel;


protected:
	// pure virtual function... you must override this

	virtual void process_event(XEvent *) = 0;


public:
	BaseDisplay(char *, char * = 0);
	virtual ~BaseDisplay(void);

	inline const Atom &getWMChangeStateAtom(void) const
	{
		return xa_wm_change_state;
	}
	inline const Atom &getWMStateAtom(void) const
	{
		return xa_wm_state;
	}
	inline const Atom &getWMDeleteAtom(void) const
	{
		return xa_wm_delete_window;
	}
	inline const Atom &getWMProtocolsAtom(void) const
	{
		return xa_wm_protocols;
	}
	inline const Atom &getWMTakeFocusAtom(void) const
	{
		return xa_wm_take_focus;
	}
	inline const Atom &getWMColormapAtom(void) const
	{
		return xa_wm_colormap_windows;
	}
	inline const Atom &getMotifWMHintsAtom(void) const
	{
		return motif_wm_hints;
	}

	// this atom is for normal app->WM hints about decorations, stacking,
	// starting workspace etc...
	inline const Atom &getBlackboxHintsAtom(void) const
	{
		return blackbox_hints;
	}

	// these atoms are for normal app->WM interaction beyond the scope of the
	// ICCCM...
	inline const Atom &getBlackboxAttributesAtom(void) const
	{
		return blackbox_attributes;
	}
	inline const Atom &getBlackboxChangeAttributesAtom(void) const
	{
		return blackbox_change_attributes;
	}

	// these atoms are for window->WM interaction, with more control and
	// information on window "structure"... common examples are
	// notifying apps when windows are raised/lowered... when the user changes
	// workspaces... i.e. "pager talk"
	inline const Atom &getBlackboxStructureMessagesAtom(void) const
	{
		return blackbox_structure_messages;
	}

	// *Notify* portions of the NETStructureMessages protocol
	inline const Atom &getBlackboxNotifyStartupAtom(void) const
	{
		return blackbox_notify_startup;
	}
	inline const Atom &getBlackboxNotifyWindowAddAtom(void) const
	{
		return blackbox_notify_window_add;
	}
	inline const Atom &getBlackboxNotifyWindowDelAtom(void) const
	{
		return blackbox_notify_window_del;
	}
	inline const Atom &getBlackboxNotifyWindowFocusAtom(void) const
	{
		return blackbox_notify_window_focus;
	}
	inline const Atom &getBlackboxNotifyCurrentWorkspaceAtom(void) const
	{
		return blackbox_notify_current_workspace;
	}
	inline const Atom &getBlackboxNotifyWorkspaceCountAtom(void) const
	{
		return blackbox_notify_workspace_count;
	}
	inline const Atom &getBlackboxNotifyWindowRaiseAtom(void) const
	{
		return blackbox_notify_window_raise;
	}
	inline const Atom &getBlackboxNotifyWindowLowerAtom(void) const
	{
		return blackbox_notify_window_lower;
	}

	// atoms to change that request changes to the desktop environment during
	// runtime... these messages can be sent by any client... as the sending
	// client window id is not included in the ClientMessage event...
	inline const Atom &getBlackboxChangeWorkspaceAtom(void) const
	{
		return blackbox_change_workspace;
	}
	inline const Atom &getBlackboxChangeWindowFocusAtom(void) const
	{
		return blackbox_change_window_focus;
	}
	inline const Atom &getBlackboxCycleWindowFocusAtom(void) const
	{
		return blackbox_cycle_window_focus;
	}

#ifdef    NEWWMSPEC

	// root window properties
	inline const Atom &getNETSupportedAtom(void) const
	{
		return net_supported;
	}
	inline const Atom &getNETClientListAtom(void) const
	{
		return net_client_list;
	}
	inline const Atom &getNETClientListStackingAtom(void) const
	{
		return net_client_list_stacking;
	}
	inline const Atom &getNETNumberOfDesktopsAtom(void) const
	{
		return net_number_of_desktops;
	}
	inline const Atom &getNETDesktopGeometryAtom(void) const
	{
		return net_desktop_geometry;
	}
	inline const Atom &getNETDesktopViewportAtom(void) const
	{
		return net_desktop_viewport;
	}
	inline const Atom &getNETCurrentDesktopAtom(void) const
	{
		return net_current_desktop;
	}
	inline const Atom &getNETDesktopNamesAtom(void) const
	{
		return net_desktop_names;
	}
	inline const Atom &getNETActiveWindowAtom(void) const
	{
		return net_active_window;
	}
	inline const Atom &getNETWorkareaAtom(void) const
	{
		return net_workarea;
	}
	inline const Atom &getNETSupportingWMCheckAtom(void) const
	{
		return net_supporting_wm_check;
	}
	inline const Atom &getNETVirtualRootsAtom(void) const
	{
		return net_virtual_roots;
	}

	// root window messages
	inline const Atom &getNETCloseWindowAtom(void) const
	{
		return net_close_window;
	}
	inline const Atom &getNETWMMoveResizeAtom(void) const
	{
		return net_wm_moveresize;
	}

	// application window properties
	inline const Atom &getNETPropertiesAtom(void) const
	{
		return net_properties;
	}
	inline const Atom &getNETWMNameAtom(void) const
	{
		return net_wm_name;
	}
	inline const Atom &getNETWMDesktopAtom(void) const
	{
		return net_wm_desktop;
	}
	inline const Atom &getNETWMWindowTypeAtom(void) const
	{
		return net_wm_window_type;
	}
	inline const Atom &getNETWMStateAtom(void) const
	{
		return net_wm_state;
	}
	inline const Atom &getNETWMStrutAtom(void) const
	{
		return net_wm_strut;
	}
	inline const Atom &getNETWMIconGeometryAtom(void) const
	{
		return net_wm_icon_geometry;
	}
	inline const Atom &getNETWMIconAtom(void) const
	{
		return net_wm_icon;
	}
	inline const Atom &getNETWMPidAtom(void) const
	{
		return net_wm_pid;
	}
	inline const Atom &getNETWMHandledIconsAtom(void) const
	{
		return net_wm_handled_icons;
	}

	// application protocols
	inline const Atom &getNETWMPingAtom(void) const
	{
		return net_wm_ping;
	}

#endif // NEWWMSPEC

	inline ScreenInfo *getScreenInfo(int s)
	{
		return (ScreenInfo *) screenInfoList->find(s);
	}

	inline const Bool &hasShapeExtensions(void) const
	{
		return shape.extensions;
	}
	inline const Bool &doShutdown(void) const
	{
		return _shutdown;
	}
	inline const Bool &isStartup(void) const
	{
		return _startup;
	}

	inline const Cursor &getSessionCursor(void) const
	{
		return cursor.session;
	}
	inline const Cursor &getMoveCursor(void) const
	{
		return cursor.move;
	}
	inline const Cursor &getLowerLeftAngleCursor(void) const
	{
		return cursor.ll_angle;
	}
	inline const Cursor &getLowerRightAngleCursor(void) const
	{
		return cursor.lr_angle;
	}

	inline Display *getXDisplay(void)
	{
		return display;
	}

	inline const char *getXDisplayName(void) const
	{
		return (const char *) display_name;
	}
	inline const char *getApplicationName(void) const
	{
		return (const char *) application_name;
	}

	inline const int &getNumberOfScreens(void) const
	{
		return number_of_screens;
	}
	inline const int &getShapeEventBase(void) const
	{
		return shape.event_basep;
	}

	inline void shutdown(void)
	{
		_shutdown = True;
	}
	inline void run(void)
	{
		_startup = _shutdown = False;
	}

	const Bool validateWindow(Window);

	void grab(void);
	void ungrab(void);
	void eventLoop(void);
	void addTimer(BTimer *);
	void removeTimer(BTimer *);

	// another pure virtual... this is used to handle signals that BaseDisplay
	// doesn't understand itself
	virtual Bool handleSignal(int) = 0;
};


class ScreenInfo
{
private:
	BaseDisplay *basedisplay;
	Visual *visual;
	Window root_window;

	int depth, screen_number;
	unsigned int width, height;


protected:


public:
	ScreenInfo(BaseDisplay *, int);

	inline BaseDisplay *getBaseDisplay(void)
	{
		return basedisplay;
	}
	inline Visual *getVisual(void)
	{
		return visual;
	}
	inline const Window &getRootWindow(void) const
	{
		return root_window;
	}

	inline const int &getDepth(void) const
	{
		return depth;
	}
	inline const int &getScreenNumber(void) const
	{
		return screen_number;
	}

	inline const unsigned int &getWidth(void) const
	{
		return width;
	}
	inline const unsigned int &getHeight(void) const
	{
		return height;
	}
};


#endif // __BaseDisplay_hh