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https://github.com/juce-framework/JUCE.git
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425 lines
14 KiB
C++
425 lines
14 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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KeyPressMappingSet::KeyPressMappingSet (ApplicationCommandManager* const commandManager_)
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: commandManager (commandManager_)
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{
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// A manager is needed to get the descriptions of commands, and will be called when
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// a command is invoked. So you can't leave this null..
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jassert (commandManager_ != nullptr);
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Desktop::getInstance().addFocusChangeListener (this);
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}
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KeyPressMappingSet::KeyPressMappingSet (const KeyPressMappingSet& other)
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: commandManager (other.commandManager)
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{
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Desktop::getInstance().addFocusChangeListener (this);
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}
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KeyPressMappingSet::~KeyPressMappingSet()
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{
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Desktop::getInstance().removeFocusChangeListener (this);
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}
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//==============================================================================
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Array<KeyPress> KeyPressMappingSet::getKeyPressesAssignedToCommand (const CommandID commandID) const
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{
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for (int i = 0; i < mappings.size(); ++i)
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if (mappings.getUnchecked(i)->commandID == commandID)
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return mappings.getUnchecked (i)->keypresses;
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return Array<KeyPress>();
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}
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void KeyPressMappingSet::addKeyPress (const CommandID commandID,
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const KeyPress& newKeyPress,
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int insertIndex)
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{
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// If you specify an upper-case letter but no shift key, how is the user supposed to press it!?
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// Stick to lower-case letters when defining a keypress, to avoid ambiguity.
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jassert (! (CharacterFunctions::isUpperCase (newKeyPress.getTextCharacter())
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&& ! newKeyPress.getModifiers().isShiftDown()));
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if (findCommandForKeyPress (newKeyPress) != commandID)
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{
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if (newKeyPress.isValid())
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{
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for (int i = mappings.size(); --i >= 0;)
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{
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if (mappings.getUnchecked(i)->commandID == commandID)
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{
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mappings.getUnchecked(i)->keypresses.insert (insertIndex, newKeyPress);
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sendChangeMessage();
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return;
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}
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}
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const ApplicationCommandInfo* const ci = commandManager->getCommandForID (commandID);
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if (ci != nullptr)
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{
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CommandMapping* const cm = new CommandMapping();
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cm->commandID = commandID;
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cm->keypresses.add (newKeyPress);
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cm->wantsKeyUpDownCallbacks = (ci->flags & ApplicationCommandInfo::wantsKeyUpDownCallbacks) != 0;
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mappings.add (cm);
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sendChangeMessage();
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}
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}
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}
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}
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void KeyPressMappingSet::resetToDefaultMappings()
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{
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mappings.clear();
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for (int i = 0; i < commandManager->getNumCommands(); ++i)
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{
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const ApplicationCommandInfo* const ci = commandManager->getCommandForIndex (i);
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for (int j = 0; j < ci->defaultKeypresses.size(); ++j)
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{
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addKeyPress (ci->commandID,
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ci->defaultKeypresses.getReference (j));
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}
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}
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sendChangeMessage();
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}
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void KeyPressMappingSet::resetToDefaultMapping (const CommandID commandID)
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{
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clearAllKeyPresses (commandID);
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const ApplicationCommandInfo* const ci = commandManager->getCommandForID (commandID);
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for (int j = 0; j < ci->defaultKeypresses.size(); ++j)
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{
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addKeyPress (ci->commandID,
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ci->defaultKeypresses.getReference (j));
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}
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}
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void KeyPressMappingSet::clearAllKeyPresses()
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{
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if (mappings.size() > 0)
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{
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sendChangeMessage();
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mappings.clear();
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}
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}
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void KeyPressMappingSet::clearAllKeyPresses (const CommandID commandID)
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{
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for (int i = mappings.size(); --i >= 0;)
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{
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if (mappings.getUnchecked(i)->commandID == commandID)
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{
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mappings.remove (i);
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sendChangeMessage();
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}
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}
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}
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void KeyPressMappingSet::removeKeyPress (const KeyPress& keypress)
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{
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if (keypress.isValid())
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{
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for (int i = mappings.size(); --i >= 0;)
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{
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CommandMapping* const cm = mappings.getUnchecked(i);
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for (int j = cm->keypresses.size(); --j >= 0;)
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{
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if (keypress == cm->keypresses [j])
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{
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cm->keypresses.remove (j);
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sendChangeMessage();
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}
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}
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}
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}
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}
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void KeyPressMappingSet::removeKeyPress (const CommandID commandID, const int keyPressIndex)
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{
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for (int i = mappings.size(); --i >= 0;)
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{
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if (mappings.getUnchecked(i)->commandID == commandID)
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{
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mappings.getUnchecked(i)->keypresses.remove (keyPressIndex);
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sendChangeMessage();
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break;
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}
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}
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}
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//==============================================================================
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CommandID KeyPressMappingSet::findCommandForKeyPress (const KeyPress& keyPress) const noexcept
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{
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for (int i = 0; i < mappings.size(); ++i)
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if (mappings.getUnchecked(i)->keypresses.contains (keyPress))
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return mappings.getUnchecked(i)->commandID;
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return 0;
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}
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bool KeyPressMappingSet::containsMapping (const CommandID commandID, const KeyPress& keyPress) const noexcept
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{
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for (int i = mappings.size(); --i >= 0;)
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if (mappings.getUnchecked(i)->commandID == commandID)
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return mappings.getUnchecked(i)->keypresses.contains (keyPress);
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return false;
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}
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void KeyPressMappingSet::invokeCommand (const CommandID commandID,
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const KeyPress& key,
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const bool isKeyDown,
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const int millisecsSinceKeyPressed,
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Component* const originatingComponent) const
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{
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ApplicationCommandTarget::InvocationInfo info (commandID);
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info.invocationMethod = ApplicationCommandTarget::InvocationInfo::fromKeyPress;
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info.isKeyDown = isKeyDown;
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info.keyPress = key;
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info.millisecsSinceKeyPressed = millisecsSinceKeyPressed;
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info.originatingComponent = originatingComponent;
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commandManager->invoke (info, false);
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}
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//==============================================================================
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bool KeyPressMappingSet::restoreFromXml (const XmlElement& xmlVersion)
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{
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if (xmlVersion.hasTagName ("KEYMAPPINGS"))
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{
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if (xmlVersion.getBoolAttribute ("basedOnDefaults", true))
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{
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// if the XML was created as a set of differences from the default mappings,
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// (i.e. by calling createXml (true)), then we need to first restore the defaults.
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resetToDefaultMappings();
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}
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else
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{
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// if the XML was created calling createXml (false), then we need to clear all
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// the keys and treat the xml as describing the entire set of mappings.
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clearAllKeyPresses();
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}
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forEachXmlChildElement (xmlVersion, map)
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{
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const CommandID commandId = map->getStringAttribute ("commandId").getHexValue32();
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if (commandId != 0)
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{
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const KeyPress key (KeyPress::createFromDescription (map->getStringAttribute ("key")));
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if (map->hasTagName ("MAPPING"))
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{
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addKeyPress (commandId, key);
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}
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else if (map->hasTagName ("UNMAPPING"))
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{
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if (containsMapping (commandId, key))
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removeKeyPress (key);
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}
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}
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}
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return true;
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}
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return false;
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}
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XmlElement* KeyPressMappingSet::createXml (const bool saveDifferencesFromDefaultSet) const
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{
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ScopedPointer <KeyPressMappingSet> defaultSet;
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if (saveDifferencesFromDefaultSet)
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{
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defaultSet = new KeyPressMappingSet (commandManager);
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defaultSet->resetToDefaultMappings();
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}
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XmlElement* const doc = new XmlElement ("KEYMAPPINGS");
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doc->setAttribute ("basedOnDefaults", saveDifferencesFromDefaultSet);
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int i;
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for (i = 0; i < mappings.size(); ++i)
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{
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const CommandMapping* const cm = mappings.getUnchecked(i);
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for (int j = 0; j < cm->keypresses.size(); ++j)
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{
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if (defaultSet == nullptr
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|| ! defaultSet->containsMapping (cm->commandID, cm->keypresses.getReference (j)))
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{
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XmlElement* const map = doc->createNewChildElement ("MAPPING");
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map->setAttribute ("commandId", String::toHexString ((int) cm->commandID));
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map->setAttribute ("description", commandManager->getDescriptionOfCommand (cm->commandID));
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map->setAttribute ("key", cm->keypresses.getReference (j).getTextDescription());
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}
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}
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}
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if (defaultSet != nullptr)
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{
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for (i = 0; i < defaultSet->mappings.size(); ++i)
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{
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const CommandMapping* const cm = defaultSet->mappings.getUnchecked(i);
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for (int j = 0; j < cm->keypresses.size(); ++j)
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{
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if (! containsMapping (cm->commandID, cm->keypresses.getReference (j)))
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{
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XmlElement* const map = doc->createNewChildElement ("UNMAPPING");
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map->setAttribute ("commandId", String::toHexString ((int) cm->commandID));
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map->setAttribute ("description", commandManager->getDescriptionOfCommand (cm->commandID));
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map->setAttribute ("key", cm->keypresses.getReference (j).getTextDescription());
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}
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}
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}
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}
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return doc;
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}
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//==============================================================================
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bool KeyPressMappingSet::keyPressed (const KeyPress& key,
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Component* originatingComponent)
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{
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bool commandWasDisabled = false;
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for (int i = 0; i < mappings.size(); ++i)
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{
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CommandMapping* const cm = mappings.getUnchecked(i);
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if (cm->keypresses.contains (key))
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{
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const ApplicationCommandInfo* const ci = commandManager->getCommandForID (cm->commandID);
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if (ci != nullptr
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&& (ci->flags & ApplicationCommandInfo::wantsKeyUpDownCallbacks) == 0)
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{
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ApplicationCommandInfo info (0);
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if (commandManager->getTargetForCommand (cm->commandID, info) != 0)
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{
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if ((info.flags & ApplicationCommandInfo::isDisabled) == 0)
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{
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invokeCommand (cm->commandID, key, true, 0, originatingComponent);
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return true;
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}
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else
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{
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commandWasDisabled = true;
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}
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}
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}
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}
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}
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if (originatingComponent != nullptr && commandWasDisabled)
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originatingComponent->getLookAndFeel().playAlertSound();
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return false;
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}
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bool KeyPressMappingSet::keyStateChanged (const bool /*isKeyDown*/, Component* originatingComponent)
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{
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bool used = false;
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const uint32 now = Time::getMillisecondCounter();
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for (int i = mappings.size(); --i >= 0;)
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{
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CommandMapping* const cm = mappings.getUnchecked(i);
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if (cm->wantsKeyUpDownCallbacks)
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{
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for (int j = cm->keypresses.size(); --j >= 0;)
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{
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const KeyPress key (cm->keypresses.getReference (j));
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const bool isDown = key.isCurrentlyDown();
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int keyPressEntryIndex = 0;
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bool wasDown = false;
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for (int k = keysDown.size(); --k >= 0;)
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{
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if (key == keysDown.getUnchecked(k)->key)
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{
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keyPressEntryIndex = k;
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wasDown = true;
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used = true;
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break;
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}
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}
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if (isDown != wasDown)
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{
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int millisecs = 0;
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if (isDown)
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{
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KeyPressTime* const k = new KeyPressTime();
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k->key = key;
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k->timeWhenPressed = now;
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keysDown.add (k);
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}
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else
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{
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const uint32 pressTime = keysDown.getUnchecked (keyPressEntryIndex)->timeWhenPressed;
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if (now > pressTime)
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millisecs = (int) (now - pressTime);
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keysDown.remove (keyPressEntryIndex);
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}
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invokeCommand (cm->commandID, key, isDown, millisecs, originatingComponent);
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used = true;
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}
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}
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}
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}
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return used;
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}
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void KeyPressMappingSet::globalFocusChanged (Component* focusedComponent)
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{
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if (focusedComponent != nullptr)
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focusedComponent->keyStateChanged (false);
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}
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