/*****************************************************************************
* window_manager.hpp
*****************************************************************************
* Copyright (C) 2003 the VideoLAN team
*
* Authors: Cyril Deguet <asmax@via.ecp.fr>
* Olivier Teulière <ipkiss@via.ecp.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifndef WINDOW_MANAGER_HPP
#define WINDOW_MANAGER_HPP
#include "skin_common.hpp"
#include "top_window.hpp"
#include "../utils/position.hpp"
#include <list>
#include <map>
#include <set>
#include <utility>
#include <memory>
class GenericFont;
class GenericLayout;
class Anchor;
class Tooltip;
class Popup;
/// Window manager for skin windows
class WindowManager: public SkinObject
{
public:
/// Direction of the resizing
enum Direction_t
{
kResizeE, // East
kResizeSE, // South-East
kResizeS, // South
kNone // Reserved for internal use
};
WindowManager( intf_thread_t *pIntf );
virtual ~WindowManager();
/**
* Add a window to the list of known windows. Necessary if you want
* your window to be movable...
*/
void registerWindow( TopWindow &rWindow );
/// Remove a previously registered window
void unregisterWindow( TopWindow &rWindow );
/// Tell the window manager that a move is initiated for rWindow
void startMove( TopWindow &rWindow );
/// Tell the window manager that the current move ended
void stopMove();
/**
* Move the rWindow window to (left, top), and move all its
* anchored windows.
* If a new anchoring is detected, the windows will move accordingly.
*/
void move( TopWindow &rWindow, int left, int top ) const;
/// Tell the window manager that a resize is initiated for rLayout
void startResize( GenericLayout &rLayout, Direction_t direction );
/// Tell the window manager that the current resizing ended
void stopResize();
/**
* Resize the rLayout layout to (width, height), and move all its
* anchored windows, if some anchors are moved during the resizing.
* If a new anchoring is detected, the windows will move (or resize)
* accordingly.
*/
void resize( GenericLayout &rLayout, int width, int height ) const;
/// Maximize the given window
void maximize( TopWindow &rWindow );
/// Unmaximize the given window
void unmaximize( TopWindow &rWindow );
/// Raise all the registered windows
void raiseAll() const;
/// Show all the registered windows
void showAll( bool firstTime = false ) const;
/// Hide all the registered windows
void hideAll() const;
/// Synchronize the windows with their visibility variable
void synchVisibility() const;
/// Save the current visibility of the windows
void saveVisibility();
/// Restore the saved visibility of the windows
void restoreVisibility() const;
/// Raise the given window
void raise( TopWindow &rWindow ) const { rWindow.raise(); }
/// Show the given window
void show( TopWindow &rWindow ) const;
/// Hide the given window
void hide( TopWindow &rWindow ) const { rWindow.hide(); }
/// Set/unset all the windows on top
void setOnTop( bool b_ontop );
/// Toggle all the windows on top
void toggleOnTop();
/// Set the magnetism of screen edges
void setMagnetValue( int magnet ) { m_magnet = magnet; }
/// Set the alpha value of the static windows
void setAlphaValue( int alpha )
{ m_alpha = (m_opacity != 255) ? m_opacity : alpha; }
/// Set the alpha value of the moving windows
void setMoveAlphaValue( int moveAlpha )
{ m_moveAlpha = (m_opacity != 255) ? m_opacity : moveAlpha; }
/// Create the tooltip window
void createTooltip( const GenericFont &rTipFont );
/// Show the tooltip window
void showTooltip();
/// Hide the tooltip window
void hideTooltip();
/// Add a layout of the given window. This new layout will be the
/// active one.
void addLayout( TopWindow &rWindow, GenericLayout &rLayout );
/// Change the active layout of the given window
void setActiveLayout( TopWindow &rWindow, GenericLayout &rLayout );
/// Mark the given popup as active
void setActivePopup( Popup &rPopup ) { m_pPopup = &rPopup; }
/// Return the active popup, or NULL if none is active
Popup * getActivePopup() const { return m_pPopup; }
/// getter to know whether opacity is needed
bool isOpacityNeeded() const
{ return (m_opacityEnabled && (m_alpha != 255 || m_moveAlpha != 255 )); }
/// Once a window is hidden, check if there are any left
void onWindowHidden();
private:
/// Some useful typedefs for lazy people like me
typedef std::set<TopWindow*> WinSet_t;
typedef std::list<Anchor*> AncList_t;
/// Dependencies map
/**
* This map represents the graph of anchored windows: it associates
* to a given window all the windows that are directly anchored by it.
* This is not transitive, i.e. if a is in m_dep[b] and if b is in
* m_dep[c], it doesn't mean that a is in m_dep[c] (in fact, it
* would be extremely rare...)
*/
std::map<TopWindow*, WinSet_t> m_dependencies;
/// Store all the windows
WinSet_t m_allWindows;
/**
* Store the windows that were visible when saveVisibility() was
* last called.
*/
WinSet_t m_savedWindows;
/// Store the moving windows
/**
* This set is updated at every start of move.
*/
WinSet_t m_movingWindows;
/**
* Store the moving windows in the context of resizing
* These sets are updated at every start of move
*/
//@{
WinSet_t m_resizeMovingE;
WinSet_t m_resizeMovingS;
WinSet_t m_resizeMovingSE;
//@}
/// Indicate whether the windows are currently on top
VariablePtr m_cVarOnTop;
/// Magnetism of the screen edges (= scope of action)
int m_magnet;
/// Alpha value of the static windows
int m_alpha;
/// Alpha value of the moving windows
int m_moveAlpha;
/// transparency set by user
bool m_opacityEnabled;
/// opacity overridden by user
int m_opacity;
/// Direction of the current resizing
Direction_t m_direction;
/// Rect of the last maximized window
SkinsRect m_maximizeRect;
/// Tooltip
std::unique_ptr<Tooltip> m_pTooltip;
/// Active popup, if any
Popup *m_pPopup;
/// Recursively build a set of windows anchored to the one given.
void buildDependSet( WinSet_t &rWinSet, TopWindow *pWindow );
/// Check anchoring
/**
* This function updates xOffset and yOffset, to take care of a new
* anchoring (if any)
*/
void checkAnchors( TopWindow *pWindow, int &xOffset, int &yOffset ) const;
};
#endif
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