mirror of
https://github.com/juce-framework/JUCE.git
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540 lines
16 KiB
C++
540 lines
16 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 2004-10 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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#include "../../../core/juce_StandardHeader.h"
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BEGIN_JUCE_NAMESPACE
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#include "juce_ComponentPeer.h"
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#include "../../../application/juce_Application.h"
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#include "../juce_Desktop.h"
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#include "../../../events/juce_MessageManager.h"
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#include "../../../core/juce_Time.h"
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#include "../../../core/juce_Random.h"
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#include "../layout/juce_ComponentBoundsConstrainer.h"
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#include "../mouse/juce_FileDragAndDropTarget.h"
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#include "../mouse/juce_MouseInputSource.h"
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//#define JUCE_ENABLE_REPAINT_DEBUGGING 1
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//==============================================================================
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static Array <ComponentPeer*> heavyweightPeers;
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//==============================================================================
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ComponentPeer::ComponentPeer (Component* const component_, const int styleFlags_)
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: component (component_),
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styleFlags (styleFlags_),
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lastPaintTime (0),
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constrainer (0),
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lastDragAndDropCompUnderMouse (0),
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fakeMouseMessageSent (false),
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isWindowMinimised (false)
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{
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heavyweightPeers.add (this);
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}
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ComponentPeer::~ComponentPeer()
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{
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heavyweightPeers.removeValue (this);
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Desktop::getInstance().triggerFocusCallback();
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}
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//==============================================================================
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int ComponentPeer::getNumPeers() throw()
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{
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return heavyweightPeers.size();
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}
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ComponentPeer* ComponentPeer::getPeer (const int index) throw()
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{
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return heavyweightPeers [index];
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}
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ComponentPeer* ComponentPeer::getPeerFor (const Component* const component) throw()
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{
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for (int i = heavyweightPeers.size(); --i >= 0;)
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{
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ComponentPeer* const peer = heavyweightPeers.getUnchecked(i);
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if (peer->getComponent() == component)
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return peer;
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}
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return 0;
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}
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bool ComponentPeer::isValidPeer (const ComponentPeer* const peer) throw()
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{
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return heavyweightPeers.contains (const_cast <ComponentPeer*> (peer));
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}
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void ComponentPeer::updateCurrentModifiers() throw()
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{
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ModifierKeys::updateCurrentModifiers();
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}
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//==============================================================================
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void ComponentPeer::handleMouseEvent (const int touchIndex, const Point<int>& positionWithinPeer, const ModifierKeys& newMods, const int64 time)
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{
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MouseInputSource* const mouse = Desktop::getInstance().getMouseSource (touchIndex);
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jassert (mouse != 0); // not enough sources!
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mouse->handleEvent (this, positionWithinPeer, time, newMods);
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}
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void ComponentPeer::handleMouseWheel (const int touchIndex, const Point<int>& positionWithinPeer, const int64 time, const float x, const float y)
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{
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MouseInputSource* const mouse = Desktop::getInstance().getMouseSource (touchIndex);
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jassert (mouse != 0); // not enough sources!
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mouse->handleWheel (this, positionWithinPeer, time, x, y);
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}
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//==============================================================================
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void ComponentPeer::handlePaint (LowLevelGraphicsContext& contextToPaintTo)
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{
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Graphics g (&contextToPaintTo);
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#if JUCE_ENABLE_REPAINT_DEBUGGING
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g.saveState();
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#endif
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JUCE_TRY
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{
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component->paintEntireComponent (g);
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}
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JUCE_CATCH_EXCEPTION
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#if JUCE_ENABLE_REPAINT_DEBUGGING
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// enabling this code will fill all areas that get repainted with a colour overlay, to show
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// clearly when things are being repainted.
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{
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g.restoreState();
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g.fillAll (Colour ((uint8) Random::getSystemRandom().nextInt (255),
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(uint8) Random::getSystemRandom().nextInt (255),
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(uint8) Random::getSystemRandom().nextInt (255),
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(uint8) 0x50));
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}
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#endif
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}
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bool ComponentPeer::handleKeyPress (const int keyCode,
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const juce_wchar textCharacter)
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{
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updateCurrentModifiers();
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Component* target = Component::getCurrentlyFocusedComponent() != 0
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? Component::getCurrentlyFocusedComponent()
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: component;
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if (target->isCurrentlyBlockedByAnotherModalComponent())
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{
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Component* const currentModalComp = Component::getCurrentlyModalComponent();
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if (currentModalComp != 0)
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target = currentModalComp;
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}
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const KeyPress keyInfo (keyCode,
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ModifierKeys::getCurrentModifiers().getRawFlags()
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& ModifierKeys::allKeyboardModifiers,
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textCharacter);
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bool keyWasUsed = false;
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while (target != 0)
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{
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const Component::SafePointer<Component> deletionChecker (target);
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if (target->keyListeners_ != 0)
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{
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for (int i = target->keyListeners_->size(); --i >= 0;)
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{
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keyWasUsed = target->keyListeners_->getUnchecked(i)->keyPressed (keyInfo, target);
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if (keyWasUsed || deletionChecker == 0)
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return keyWasUsed;
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i = jmin (i, target->keyListeners_->size());
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}
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}
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keyWasUsed = target->keyPressed (keyInfo);
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if (keyWasUsed || deletionChecker == 0)
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break;
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if (keyInfo.isKeyCode (KeyPress::tabKey) && Component::getCurrentlyFocusedComponent() != 0)
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{
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Component* const currentlyFocused = Component::getCurrentlyFocusedComponent();
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currentlyFocused->moveKeyboardFocusToSibling (! keyInfo.getModifiers().isShiftDown());
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keyWasUsed = (currentlyFocused != Component::getCurrentlyFocusedComponent());
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break;
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}
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target = target->parentComponent_;
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}
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return keyWasUsed;
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}
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bool ComponentPeer::handleKeyUpOrDown (const bool isKeyDown)
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{
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updateCurrentModifiers();
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Component* target = Component::getCurrentlyFocusedComponent() != 0
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? Component::getCurrentlyFocusedComponent()
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: component;
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if (target->isCurrentlyBlockedByAnotherModalComponent())
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{
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Component* const currentModalComp = Component::getCurrentlyModalComponent();
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if (currentModalComp != 0)
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target = currentModalComp;
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}
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bool keyWasUsed = false;
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while (target != 0)
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{
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const Component::SafePointer<Component> deletionChecker (target);
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keyWasUsed = target->keyStateChanged (isKeyDown);
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if (keyWasUsed || deletionChecker == 0)
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break;
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if (target->keyListeners_ != 0)
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{
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for (int i = target->keyListeners_->size(); --i >= 0;)
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{
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keyWasUsed = target->keyListeners_->getUnchecked(i)->keyStateChanged (isKeyDown, target);
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if (keyWasUsed || deletionChecker == 0)
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return keyWasUsed;
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i = jmin (i, target->keyListeners_->size());
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}
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}
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target = target->parentComponent_;
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}
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return keyWasUsed;
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}
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void ComponentPeer::handleModifierKeysChange()
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{
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updateCurrentModifiers();
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Component* target = Desktop::getInstance().getMainMouseSource().getComponentUnderMouse();
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if (target == 0)
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target = Component::getCurrentlyFocusedComponent();
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if (target == 0)
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target = component;
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if (target != 0)
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target->internalModifierKeysChanged();
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}
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TextInputTarget* ComponentPeer::findCurrentTextInputTarget()
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{
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Component* const c = Component::getCurrentlyFocusedComponent();
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if (component->isParentOf (c))
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{
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TextInputTarget* const ti = dynamic_cast <TextInputTarget*> (c);
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if (ti != 0 && ti->isTextInputActive())
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return ti;
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}
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return 0;
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}
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//==============================================================================
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void ComponentPeer::handleBroughtToFront()
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{
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updateCurrentModifiers();
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if (component != 0)
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component->internalBroughtToFront();
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}
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void ComponentPeer::setConstrainer (ComponentBoundsConstrainer* const newConstrainer) throw()
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{
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constrainer = newConstrainer;
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}
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void ComponentPeer::handleMovedOrResized()
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{
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jassert (component->isValidComponent());
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updateCurrentModifiers();
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const bool nowMinimised = isMinimised();
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if (component->flags.hasHeavyweightPeerFlag && ! nowMinimised)
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{
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const Component::SafePointer<Component> deletionChecker (component);
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const Rectangle<int> newBounds (getBounds());
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const bool wasMoved = (component->getPosition() != newBounds.getPosition());
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const bool wasResized = (component->getWidth() != newBounds.getWidth() || component->getHeight() != newBounds.getHeight());
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if (wasMoved || wasResized)
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{
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component->bounds_ = newBounds;
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if (wasResized)
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component->repaint();
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component->sendMovedResizedMessages (wasMoved, wasResized);
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if (deletionChecker == 0)
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return;
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}
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}
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if (isWindowMinimised != nowMinimised)
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{
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isWindowMinimised = nowMinimised;
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component->minimisationStateChanged (nowMinimised);
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component->sendVisibilityChangeMessage();
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}
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if (! isFullScreen())
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lastNonFullscreenBounds = component->getBounds();
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}
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void ComponentPeer::handleFocusGain()
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{
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updateCurrentModifiers();
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if (component->isParentOf (lastFocusedComponent))
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{
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Component::currentlyFocusedComponent = lastFocusedComponent;
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Desktop::getInstance().triggerFocusCallback();
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lastFocusedComponent->internalFocusGain (Component::focusChangedDirectly);
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}
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else
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{
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if (! component->isCurrentlyBlockedByAnotherModalComponent())
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component->grabKeyboardFocus();
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else
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Component::bringModalComponentToFront();
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}
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}
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void ComponentPeer::handleFocusLoss()
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{
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updateCurrentModifiers();
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if (component->hasKeyboardFocus (true))
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{
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lastFocusedComponent = Component::currentlyFocusedComponent;
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if (lastFocusedComponent != 0)
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{
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Component::currentlyFocusedComponent = 0;
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Desktop::getInstance().triggerFocusCallback();
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lastFocusedComponent->internalFocusLoss (Component::focusChangedByMouseClick);
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}
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}
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}
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Component* ComponentPeer::getLastFocusedSubcomponent() const throw()
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{
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return (component->isParentOf (lastFocusedComponent) && lastFocusedComponent->isShowing())
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? static_cast <Component*> (lastFocusedComponent)
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: component;
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}
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void ComponentPeer::handleScreenSizeChange()
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{
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updateCurrentModifiers();
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component->parentSizeChanged();
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handleMovedOrResized();
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}
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void ComponentPeer::setNonFullScreenBounds (const Rectangle<int>& newBounds) throw()
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{
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lastNonFullscreenBounds = newBounds;
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}
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const Rectangle<int>& ComponentPeer::getNonFullScreenBounds() const throw()
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{
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return lastNonFullscreenBounds;
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}
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//==============================================================================
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static FileDragAndDropTarget* findDragAndDropTarget (Component* c,
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const StringArray& files,
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FileDragAndDropTarget* const lastOne)
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{
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while (c != 0)
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{
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FileDragAndDropTarget* const t = dynamic_cast <FileDragAndDropTarget*> (c);
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if (t != 0 && (t == lastOne || t->isInterestedInFileDrag (files)))
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return t;
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c = c->getParentComponent();
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}
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return 0;
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}
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void ComponentPeer::handleFileDragMove (const StringArray& files, const Point<int>& position)
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{
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updateCurrentModifiers();
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FileDragAndDropTarget* lastTarget
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= dynamic_cast<FileDragAndDropTarget*> (static_cast<Component*> (dragAndDropTargetComponent));
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FileDragAndDropTarget* newTarget = 0;
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Component* const compUnderMouse = component->getComponentAt (position);
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if (compUnderMouse != lastDragAndDropCompUnderMouse)
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{
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lastDragAndDropCompUnderMouse = compUnderMouse;
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newTarget = findDragAndDropTarget (compUnderMouse, files, lastTarget);
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if (newTarget != lastTarget)
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{
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if (lastTarget != 0)
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lastTarget->fileDragExit (files);
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dragAndDropTargetComponent = 0;
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if (newTarget != 0)
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{
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dragAndDropTargetComponent = dynamic_cast <Component*> (newTarget);
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const Point<int> pos (component->relativePositionToOtherComponent (dragAndDropTargetComponent, position));
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newTarget->fileDragEnter (files, pos.getX(), pos.getY());
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}
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}
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}
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else
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{
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newTarget = lastTarget;
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}
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if (newTarget != 0)
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{
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Component* const targetComp = dynamic_cast <Component*> (newTarget);
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const Point<int> pos (component->relativePositionToOtherComponent (targetComp, position));
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newTarget->fileDragMove (files, pos.getX(), pos.getY());
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}
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}
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void ComponentPeer::handleFileDragExit (const StringArray& files)
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{
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handleFileDragMove (files, Point<int> (-1, -1));
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jassert (dragAndDropTargetComponent == 0);
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lastDragAndDropCompUnderMouse = 0;
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}
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void ComponentPeer::handleFileDragDrop (const StringArray& files, const Point<int>& position)
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{
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handleFileDragMove (files, position);
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if (dragAndDropTargetComponent != 0)
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{
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FileDragAndDropTarget* const target
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= dynamic_cast<FileDragAndDropTarget*> (static_cast<Component*> (dragAndDropTargetComponent));
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dragAndDropTargetComponent = 0;
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lastDragAndDropCompUnderMouse = 0;
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if (target != 0)
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{
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Component* const targetComp = dynamic_cast <Component*> (target);
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if (targetComp->isCurrentlyBlockedByAnotherModalComponent())
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{
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targetComp->internalModalInputAttempt();
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if (targetComp->isCurrentlyBlockedByAnotherModalComponent())
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return;
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}
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const Point<int> pos (component->relativePositionToOtherComponent (targetComp, position));
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target->filesDropped (files, pos.getX(), pos.getY());
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}
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}
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}
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//==============================================================================
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void ComponentPeer::handleUserClosingWindow()
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{
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updateCurrentModifiers();
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component->userTriedToCloseWindow();
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}
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//==============================================================================
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void ComponentPeer::bringModalComponentToFront()
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{
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Component::bringModalComponentToFront();
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}
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//==============================================================================
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void ComponentPeer::clearMaskedRegion()
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{
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maskedRegion.clear();
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}
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void ComponentPeer::addMaskedRegion (int x, int y, int w, int h)
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{
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maskedRegion.add (x, y, w, h);
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}
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//==============================================================================
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const StringArray ComponentPeer::getAvailableRenderingEngines()
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{
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StringArray s;
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s.add ("Software Renderer");
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return s;
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}
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int ComponentPeer::getCurrentRenderingEngine() throw()
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{
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return 0;
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}
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void ComponentPeer::setCurrentRenderingEngine (int /*index*/)
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{
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}
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END_JUCE_NAMESPACE
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