/* This file is part of the KDE project Copyright (C) 2002 Matthias Hoelzer-Kluepfel <mhk@kde.org> This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifndef __KACCELMANAGER_PRIVATE_H__ #define __KACCELMANAGER_PRIVATE_H__ #include <tqstring.h> #include <tqmemarray.h> #include <tqvaluelist.h> #include <tqobject.h> class TQWidgetStack; /** * A string class handling accelerators. * * This class contains a string and knowledge about accelerators. * It keeps a list weights, telling how valuable each character * would be as an accelerator. * * @author Matthias Hoelzer-Kluepfel <mhk@kde.org> */ class KAccelString { public: KAccelString() : m_pureText(), m_accel(-1) {} KAccelString(const TQString &input, int initalWeight=-1); void calculateWeights(int initialWeight); const TQString &pure() const { return m_pureText; } TQString accelerated() const; int accel() const { return m_accel; } void setAccel(int accel) { m_accel = accel; } int originalAccel() const { return m_orig_accel; } TQString originalText() const { return m_origText; } TQChar accelerator() const; int maxWeight(int &index, const TQString &used); bool operator == (const KAccelString &c) const { return m_pureText == c.m_pureText && m_accel == c.m_accel && m_orig_accel == c.m_orig_accel; } private: int stripAccelerator(TQString &input); void dump(); TQString m_pureText, m_origText; int m_accel, m_orig_accel; TQMemArray<int> m_weight; }; typedef TQValueList<KAccelString> KAccelStringList; /** * This class encapsulates the algorithm finding the 'best' * distribution of accelerators in a hierarchy of widgets. * * @author Matthias Hoelzer-Kluepfel <mhk@kde.org> */ class KAccelManagerAlgorithm { public: /// Constants used in the algorithm enum { /// Default control weight DEFAULT_WEIGHT = 50, /// Additional weight for first character in string FIRST_CHARACTER_EXTRA_WEIGHT = 50, /// Additional weight for the beginning of a word WORD_BEGINNING_EXTRA_WEIGHT = 50, /// Additional weight for the dialog buttons (large, we basically never want these reassigned) DIALOG_BUTTON_EXTRA_WEIGHT = 300, /// Additional weight for a 'wanted' accelerator WANTED_ACCEL_EXTRA_WEIGHT = 150, /// Default weight for an 'action' widget (ie, pushbuttons) ACTION_ELEMENT_WEIGHT = 50, /// Default weight for group boxes (low priority) GROUP_BOX_WEIGHT = -2000, /// Default weight for menu titles MENU_TITLE_WEIGHT = 250, /// Additional weight for KDE standard accelerators STANDARD_ACCEL = 300 }; /// Method to call to find the best distribution of accelerators. static void findAccelerators(KAccelStringList &result, TQString &used); }; class TQPopupMenu; /** * This class manages a popup menu. It will notice if entries have been * added or changed, and will recalculate the accelerators accordingly. * * This is necessary for dynamic menus like for example in kicker. * * @author Matthias Hoelzer-Kluepfel <mhk@kde.org> */ class KPopupAccelManager : public TQObject { Q_OBJECT public: static void manage(TQPopupMenu *popup); protected: KPopupAccelManager(TQPopupMenu *popup); private slots: void aboutToShow(); private: void calculateAccelerators(); void findMenuEntries(KAccelStringList &list); void setMenuEntries(const KAccelStringList &list); TQPopupMenu *m_popup; KAccelStringList m_entries; int m_count; }; class QWidgetStackAccelManager : public TQObject { Q_OBJECT public: static void manage(TQWidgetStack *popup); protected: QWidgetStackAccelManager(TQWidgetStack *popup); private slots: void aboutToShow(TQWidget *); bool eventFilter ( TQObject * watched, TQEvent * e ); private: void calculateAccelerators(); TQWidgetStack *m_stack; KAccelStringList m_entries; }; #endif