mirror of
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120 lines
4.2 KiB
C++
120 lines
4.2 KiB
C++
/************************************************************************
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**
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** @file vmodifierkey.h
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** @author Roman Telezhynskyi <dismine(at)gmail.com>
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** @date 14 2, 2019
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**
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** @brief
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** @copyright
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** This source code is part of the Valentina project, a pattern making
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** program, whose allow create and modeling patterns of clothing.
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** Copyright (C) 2019 Valentina project
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** <https://gitlab.com/smart-pattern/valentina> All Rights Reserved.
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**
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** Valentina is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** Valentina is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with Valentina. If not, see <http://www.gnu.org/licenses/>.
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**
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*************************************************************************/
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#ifndef VMODIFIERKEY_H
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#define VMODIFIERKEY_H
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#include <QString>
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/**
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* A class that helps to deal efficiently with platform and localization issues
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* of modifier keys.
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*
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* It is based on QKeySequence::toString(QKeySequence::NativeText) which provides
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* localization and deals with swapping Ctrl and Cmd on Mac OS X. In contrast
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* to QKeySequence, VModifierKey has an implicit operator for casting to QString,
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* and it removes the trailing '+' from pseudo key sequences which consist of
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* modifier keys only. Static methods provide efficient translations of the
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* pure modifier keys.
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*
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* For true QKeySequences, call QKeySequence::toString(QKeySequence::NativeText)
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* directly.
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*
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* On Windows and Linux, the keys will be displayed as word ("Shift" etc.).
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* On OS X, the keys will be displayed as graphical symbols ("⇧", i.e.
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* Unicode character U+21E7, etc.).
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*
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* Synopsis:
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*
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* QString text = tr("%1+Click to add a point.").arg(VModifierKey::control());
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* QString more = tr("%1+Click to select a point.").arg(VModifierKey(Qt::ALT + Qt::ShiftModifier));
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*
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* // BUT:
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* QString help = help_action.shortcut().toString(QKeySequence::NativeText);
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*/
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class VModifierKey
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{
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public:
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/** Constructs a new VModifierKey for the given combination of KeyboardModifiers. */
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explicit VModifierKey(Qt::KeyboardModifiers keys);
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/** Constructs a new VModifierKey for the given key. */
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explicit VModifierKey(Qt::Key key);
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/** Returns a string representation for user interface purposes.
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*
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* This operator is intented to be used for implicit type casts. */
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operator QString() const; // NOLINT(google-explicit-constructor)
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/** Returns a shared Alt modifier key. */
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static auto Alt() -> const VModifierKey &;
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/** Returns a shared Control modifier key. */
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static auto Control() -> const VModifierKey &;
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/** Returns a shared Control+Shift modifier key. */
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static auto ControlShift() -> const VModifierKey &;
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/** Returns a shared Meta modifier key. */
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static auto Meta() -> const VModifierKey &;
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/** Returns a shared Shift modifier key. */
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static auto Shift() -> const VModifierKey &;
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/** Returns a shared Space key. */
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static auto Space() -> const VModifierKey &;
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/** Returns a shared Return key. */
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static auto ReturnKey() -> const VModifierKey &;
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/** Returns a shared Enter key. */
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static auto EnterKey() -> const VModifierKey &;
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/** Returns a shared Backspace key. */
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static auto Backspace() -> const VModifierKey &;
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/** Returns a shared Escape modifier key. */
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static auto Escape() -> const VModifierKey &;
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protected:
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/** Constructs a new VModifierKey for the given key. */
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explicit VModifierKey(int key);
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private:
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/** The native text (localized, adapted to the system). */
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QString m_nativeText;
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};
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//---------------------------------------------------------------------------------------------------------------------
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inline VModifierKey::operator QString() const
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{
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return m_nativeText;
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}
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#endif // VMODIFIERKEY_H
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