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https://github.com/juce-framework/JUCE.git
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133 lines
5.2 KiB
C++
133 lines
5.2 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library - "Jules' Utility Class Extensions"
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Copyright 2004-11 by Raw Material Software Ltd.
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------------------------------------------------------------------------------
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JUCE can be redistributed and/or modified under the terms of the GNU General
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Public License (Version 2), as published by the Free Software Foundation.
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A copy of the license is included in the JUCE distribution, or can be found
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online at www.gnu.org/licenses.
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.rawmaterialsoftware.com/juce for more information.
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==============================================================================
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*/
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#ifndef __JUCE_TEXTEDITORKEYMAPPER_JUCEHEADER__
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#define __JUCE_TEXTEDITORKEYMAPPER_JUCEHEADER__
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#include "juce_KeyPress.h"
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//==============================================================================
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/** This class is used to invoke a range of text-editor navigation methods on
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an object, based upon a keypress event.
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It's currently used internally by the TextEditor and CodeEditorComponent.
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*/
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template <class CallbackClass>
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struct TextEditorKeyMapper
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{
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/** Checks the keypress and invokes one of a range of navigation functions that
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the target class must implement, based on the key event.
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*/
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static bool invokeKeyFunction (CallbackClass& target, const KeyPress& key)
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{
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const bool isShiftDown = key.getModifiers().isShiftDown();
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const bool ctrlOrAltDown = key.getModifiers().isCtrlDown() || key.getModifiers().isAltDown();
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if (key == KeyPress (KeyPress::downKey, ModifierKeys::ctrlModifier, 0)
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&& target.scrollUp())
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return true;
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if (key == KeyPress (KeyPress::upKey, ModifierKeys::ctrlModifier, 0)
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&& target.scrollDown())
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return true;
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#if JUCE_MAC
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if (key.getModifiers().isCommandDown())
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{
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if (key.isKeyCode (KeyPress::upKey))
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return target.moveCaretToTop (isShiftDown);
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if (key.isKeyCode (KeyPress::downKey))
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return target.moveCaretToEnd (isShiftDown);
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if (key.isKeyCode (KeyPress::leftKey))
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return target.moveCaretToStartOfLine (isShiftDown);
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if (key.isKeyCode (KeyPress::rightKey))
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return target.moveCaretToEndOfLine (isShiftDown);
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}
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#endif
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if (key.isKeyCode (KeyPress::upKey))
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return target.moveCaretUp (isShiftDown);
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if (key.isKeyCode (KeyPress::downKey))
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return target.moveCaretDown (isShiftDown);
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if (key.isKeyCode (KeyPress::leftKey))
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return target.moveCaretLeft (ctrlOrAltDown, isShiftDown);
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if (key.isKeyCode (KeyPress::rightKey))
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return target.moveCaretRight (ctrlOrAltDown, isShiftDown);
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if (key.isKeyCode (KeyPress::pageUpKey))
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return target.pageUp (isShiftDown);
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if (key.isKeyCode (KeyPress::pageDownKey))
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return target.pageDown (isShiftDown);
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if (key.isKeyCode (KeyPress::homeKey))
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return ctrlOrAltDown ? target.moveCaretToTop (isShiftDown)
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: target.moveCaretToStartOfLine (isShiftDown);
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if (key.isKeyCode (KeyPress::endKey))
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return ctrlOrAltDown ? target.moveCaretToEnd (isShiftDown)
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: target.moveCaretToEndOfLine (isShiftDown);
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if (key == KeyPress ('c', ModifierKeys::commandModifier, 0)
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|| key == KeyPress (KeyPress::insertKey, ModifierKeys::ctrlModifier, 0))
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return target.copyToClipboard();
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if (key == KeyPress ('x', ModifierKeys::commandModifier, 0)
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|| key == KeyPress (KeyPress::deleteKey, ModifierKeys::shiftModifier, 0))
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return target.cutToClipboard();
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if (key == KeyPress ('v', ModifierKeys::commandModifier, 0)
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|| key == KeyPress (KeyPress::insertKey, ModifierKeys::shiftModifier, 0))
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return target.pasteFromClipboard();
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if (key.isKeyCode (KeyPress::backspaceKey))
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return target.deleteBackwards (ctrlOrAltDown);
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if (key.isKeyCode (KeyPress::deleteKey))
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return target.deleteForwards (ctrlOrAltDown);
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if (key == KeyPress ('a', ModifierKeys::commandModifier, 0))
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return target.selectAll();
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if (key == KeyPress ('z', ModifierKeys::commandModifier, 0))
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return target.undo();
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if (key == KeyPress ('y', ModifierKeys::commandModifier, 0)
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|| key == KeyPress ('z', ModifierKeys::commandModifier | ModifierKeys::shiftModifier, 0))
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return target.redo();
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return false;
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}
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};
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#endif // __JUCE_TEXTEDITORKEYMAPPER_JUCEHEADER__
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