mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-10 23:44:24 +00:00
572 lines
18 KiB
C++
572 lines
18 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE library - "Jules' Utility Class Extensions"
|
|
Copyright 2004-11 by Raw Material Software Ltd.
|
|
|
|
------------------------------------------------------------------------------
|
|
|
|
JUCE can be redistributed and/or modified under the terms of the GNU General
|
|
Public License (Version 2), as published by the Free Software Foundation.
|
|
A copy of the license is included in the JUCE distribution, or can be found
|
|
online at www.gnu.org/licenses.
|
|
|
|
JUCE 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 General Public License for more details.
|
|
|
|
------------------------------------------------------------------------------
|
|
|
|
To release a closed-source product which uses JUCE, commercial licenses are
|
|
available: visit www.rawmaterialsoftware.com/juce for more information.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
BEGIN_JUCE_NAMESPACE
|
|
|
|
//#define JUCE_ENABLE_REPAINT_DEBUGGING 1
|
|
|
|
//==============================================================================
|
|
static Array <ComponentPeer*> heavyweightPeers;
|
|
static uint32 lastUniqueID = 1;
|
|
|
|
//==============================================================================
|
|
ComponentPeer::ComponentPeer (Component* const component_, const int styleFlags_)
|
|
: component (component_),
|
|
styleFlags (styleFlags_),
|
|
lastPaintTime (0),
|
|
constrainer (nullptr),
|
|
lastDragAndDropCompUnderMouse (nullptr),
|
|
uniqueID (lastUniqueID += 2), // increment by 2 so that this can never hit 0
|
|
fakeMouseMessageSent (false),
|
|
isWindowMinimised (false)
|
|
{
|
|
heavyweightPeers.add (this);
|
|
}
|
|
|
|
ComponentPeer::~ComponentPeer()
|
|
{
|
|
heavyweightPeers.removeValue (this);
|
|
Desktop::getInstance().triggerFocusCallback();
|
|
}
|
|
|
|
//==============================================================================
|
|
int ComponentPeer::getNumPeers() noexcept
|
|
{
|
|
return heavyweightPeers.size();
|
|
}
|
|
|
|
ComponentPeer* ComponentPeer::getPeer (const int index) noexcept
|
|
{
|
|
return heavyweightPeers [index];
|
|
}
|
|
|
|
ComponentPeer* ComponentPeer::getPeerFor (const Component* const component) noexcept
|
|
{
|
|
for (int i = heavyweightPeers.size(); --i >= 0;)
|
|
{
|
|
ComponentPeer* const peer = heavyweightPeers.getUnchecked(i);
|
|
|
|
if (peer->getComponent() == component)
|
|
return peer;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
bool ComponentPeer::isValidPeer (const ComponentPeer* const peer) noexcept
|
|
{
|
|
return heavyweightPeers.contains (const_cast <ComponentPeer*> (peer));
|
|
}
|
|
|
|
void ComponentPeer::updateCurrentModifiers() noexcept
|
|
{
|
|
ModifierKeys::updateCurrentModifiers();
|
|
}
|
|
|
|
//==============================================================================
|
|
void ComponentPeer::handleMouseEvent (const int touchIndex, const Point<int>& positionWithinPeer, const ModifierKeys& newMods, const int64 time)
|
|
{
|
|
MouseInputSource* const mouse = Desktop::getInstance().getMouseSource (touchIndex);
|
|
jassert (mouse != nullptr); // not enough sources!
|
|
|
|
mouse->handleEvent (this, positionWithinPeer, time, newMods);
|
|
}
|
|
|
|
void ComponentPeer::handleMouseWheel (const int touchIndex, const Point<int>& positionWithinPeer, const int64 time, const float x, const float y)
|
|
{
|
|
MouseInputSource* const mouse = Desktop::getInstance().getMouseSource (touchIndex);
|
|
jassert (mouse != nullptr); // not enough sources!
|
|
|
|
mouse->handleWheel (this, positionWithinPeer, time, x, y);
|
|
}
|
|
|
|
//==============================================================================
|
|
void ComponentPeer::handlePaint (LowLevelGraphicsContext& contextToPaintTo)
|
|
{
|
|
Graphics g (&contextToPaintTo);
|
|
|
|
#if JUCE_ENABLE_REPAINT_DEBUGGING
|
|
g.saveState();
|
|
#endif
|
|
|
|
JUCE_TRY
|
|
{
|
|
component->paintEntireComponent (g, true);
|
|
}
|
|
JUCE_CATCH_EXCEPTION
|
|
|
|
#if JUCE_ENABLE_REPAINT_DEBUGGING
|
|
// enabling this code will fill all areas that get repainted with a colour overlay, to show
|
|
// clearly when things are being repainted.
|
|
g.restoreState();
|
|
|
|
static Random rng;
|
|
|
|
g.fillAll (Colour ((uint8) rng.nextInt (255),
|
|
(uint8) rng.nextInt (255),
|
|
(uint8) rng.nextInt (255),
|
|
(uint8) 0x50));
|
|
#endif
|
|
|
|
/** If this fails, it's probably be because your CPU floating-point precision mode has
|
|
been set to low.. This setting is sometimes changed by things like Direct3D, and can
|
|
mess up a lot of the calculations that the library needs to do.
|
|
*/
|
|
jassert (roundToInt (10.1f) == 10);
|
|
}
|
|
|
|
bool ComponentPeer::handleKeyPress (const int keyCode,
|
|
const juce_wchar textCharacter)
|
|
{
|
|
updateCurrentModifiers();
|
|
|
|
Component* target = Component::getCurrentlyFocusedComponent() != nullptr
|
|
? Component::getCurrentlyFocusedComponent()
|
|
: component;
|
|
|
|
if (target->isCurrentlyBlockedByAnotherModalComponent())
|
|
{
|
|
Component* const currentModalComp = Component::getCurrentlyModalComponent();
|
|
|
|
if (currentModalComp != nullptr)
|
|
target = currentModalComp;
|
|
}
|
|
|
|
const KeyPress keyInfo (keyCode,
|
|
ModifierKeys::getCurrentModifiers().getRawFlags()
|
|
& ModifierKeys::allKeyboardModifiers,
|
|
textCharacter);
|
|
|
|
bool keyWasUsed = false;
|
|
|
|
while (target != nullptr)
|
|
{
|
|
const WeakReference<Component> deletionChecker (target);
|
|
const Array <KeyListener*>* const keyListeners = target->keyListeners;
|
|
|
|
if (keyListeners != nullptr)
|
|
{
|
|
for (int i = keyListeners->size(); --i >= 0;)
|
|
{
|
|
keyWasUsed = keyListeners->getUnchecked(i)->keyPressed (keyInfo, target);
|
|
|
|
if (keyWasUsed || deletionChecker == nullptr)
|
|
return keyWasUsed;
|
|
|
|
i = jmin (i, keyListeners->size());
|
|
}
|
|
}
|
|
|
|
keyWasUsed = target->keyPressed (keyInfo);
|
|
|
|
if (keyWasUsed || deletionChecker == nullptr)
|
|
break;
|
|
|
|
if (keyInfo.isKeyCode (KeyPress::tabKey) && Component::getCurrentlyFocusedComponent() != nullptr)
|
|
{
|
|
Component* const currentlyFocused = Component::getCurrentlyFocusedComponent();
|
|
currentlyFocused->moveKeyboardFocusToSibling (! keyInfo.getModifiers().isShiftDown());
|
|
keyWasUsed = (currentlyFocused != Component::getCurrentlyFocusedComponent());
|
|
break;
|
|
}
|
|
|
|
target = target->getParentComponent();
|
|
}
|
|
|
|
return keyWasUsed;
|
|
}
|
|
|
|
bool ComponentPeer::handleKeyUpOrDown (const bool isKeyDown)
|
|
{
|
|
updateCurrentModifiers();
|
|
|
|
Component* target = Component::getCurrentlyFocusedComponent() != nullptr
|
|
? Component::getCurrentlyFocusedComponent()
|
|
: component;
|
|
|
|
if (target->isCurrentlyBlockedByAnotherModalComponent())
|
|
{
|
|
Component* const currentModalComp = Component::getCurrentlyModalComponent();
|
|
|
|
if (currentModalComp != nullptr)
|
|
target = currentModalComp;
|
|
}
|
|
|
|
bool keyWasUsed = false;
|
|
|
|
while (target != nullptr)
|
|
{
|
|
const WeakReference<Component> deletionChecker (target);
|
|
|
|
keyWasUsed = target->keyStateChanged (isKeyDown);
|
|
|
|
if (keyWasUsed || deletionChecker == nullptr)
|
|
break;
|
|
|
|
const Array <KeyListener*>* const keyListeners = target->keyListeners;
|
|
|
|
if (keyListeners != nullptr)
|
|
{
|
|
for (int i = keyListeners->size(); --i >= 0;)
|
|
{
|
|
keyWasUsed = keyListeners->getUnchecked(i)->keyStateChanged (isKeyDown, target);
|
|
|
|
if (keyWasUsed || deletionChecker == nullptr)
|
|
return keyWasUsed;
|
|
|
|
i = jmin (i, keyListeners->size());
|
|
}
|
|
}
|
|
|
|
target = target->getParentComponent();
|
|
}
|
|
|
|
return keyWasUsed;
|
|
}
|
|
|
|
void ComponentPeer::handleModifierKeysChange()
|
|
{
|
|
updateCurrentModifiers();
|
|
|
|
Component* target = Desktop::getInstance().getMainMouseSource().getComponentUnderMouse();
|
|
|
|
if (target == nullptr)
|
|
target = Component::getCurrentlyFocusedComponent();
|
|
|
|
if (target == nullptr)
|
|
target = component;
|
|
|
|
if (target != nullptr)
|
|
target->internalModifierKeysChanged();
|
|
}
|
|
|
|
TextInputTarget* ComponentPeer::findCurrentTextInputTarget()
|
|
{
|
|
Component* const c = Component::getCurrentlyFocusedComponent();
|
|
if (component->isParentOf (c))
|
|
{
|
|
TextInputTarget* const ti = dynamic_cast <TextInputTarget*> (c);
|
|
if (ti != nullptr && ti->isTextInputActive())
|
|
return ti;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
void ComponentPeer::dismissPendingTextInput()
|
|
{
|
|
}
|
|
|
|
//==============================================================================
|
|
void ComponentPeer::handleBroughtToFront()
|
|
{
|
|
updateCurrentModifiers();
|
|
|
|
if (component != nullptr)
|
|
component->internalBroughtToFront();
|
|
}
|
|
|
|
void ComponentPeer::setConstrainer (ComponentBoundsConstrainer* const newConstrainer) noexcept
|
|
{
|
|
constrainer = newConstrainer;
|
|
}
|
|
|
|
void ComponentPeer::handleMovedOrResized()
|
|
{
|
|
updateCurrentModifiers();
|
|
|
|
const bool nowMinimised = isMinimised();
|
|
|
|
if (component->flags.hasHeavyweightPeerFlag && ! nowMinimised)
|
|
{
|
|
const WeakReference<Component> deletionChecker (component);
|
|
|
|
const Rectangle<int> newBounds (getBounds());
|
|
const bool wasMoved = (component->getPosition() != newBounds.getPosition());
|
|
const bool wasResized = (component->getWidth() != newBounds.getWidth() || component->getHeight() != newBounds.getHeight());
|
|
|
|
if (wasMoved || wasResized)
|
|
{
|
|
component->bounds = newBounds;
|
|
|
|
if (wasResized)
|
|
component->repaint();
|
|
|
|
component->sendMovedResizedMessages (wasMoved, wasResized);
|
|
|
|
if (deletionChecker == nullptr)
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (isWindowMinimised != nowMinimised)
|
|
{
|
|
isWindowMinimised = nowMinimised;
|
|
component->minimisationStateChanged (nowMinimised);
|
|
component->sendVisibilityChangeMessage();
|
|
}
|
|
|
|
if (! isFullScreen())
|
|
lastNonFullscreenBounds = component->getBounds();
|
|
}
|
|
|
|
void ComponentPeer::handleFocusGain()
|
|
{
|
|
updateCurrentModifiers();
|
|
|
|
if (component->isParentOf (lastFocusedComponent))
|
|
{
|
|
Component::currentlyFocusedComponent = lastFocusedComponent;
|
|
Desktop::getInstance().triggerFocusCallback();
|
|
lastFocusedComponent->internalFocusGain (Component::focusChangedDirectly);
|
|
}
|
|
else
|
|
{
|
|
if (! component->isCurrentlyBlockedByAnotherModalComponent())
|
|
component->grabKeyboardFocus();
|
|
else
|
|
ModalComponentManager::getInstance()->bringModalComponentsToFront();
|
|
}
|
|
}
|
|
|
|
void ComponentPeer::handleFocusLoss()
|
|
{
|
|
updateCurrentModifiers();
|
|
|
|
if (component->hasKeyboardFocus (true))
|
|
{
|
|
lastFocusedComponent = Component::currentlyFocusedComponent;
|
|
|
|
if (lastFocusedComponent != nullptr)
|
|
{
|
|
Component::currentlyFocusedComponent = nullptr;
|
|
Desktop::getInstance().triggerFocusCallback();
|
|
lastFocusedComponent->internalFocusLoss (Component::focusChangedByMouseClick);
|
|
}
|
|
}
|
|
}
|
|
|
|
Component* ComponentPeer::getLastFocusedSubcomponent() const noexcept
|
|
{
|
|
return (component->isParentOf (lastFocusedComponent) && lastFocusedComponent->isShowing())
|
|
? static_cast <Component*> (lastFocusedComponent)
|
|
: component;
|
|
}
|
|
|
|
void ComponentPeer::handleScreenSizeChange()
|
|
{
|
|
updateCurrentModifiers();
|
|
|
|
component->parentSizeChanged();
|
|
handleMovedOrResized();
|
|
}
|
|
|
|
void ComponentPeer::setNonFullScreenBounds (const Rectangle<int>& newBounds) noexcept
|
|
{
|
|
lastNonFullscreenBounds = newBounds;
|
|
}
|
|
|
|
const Rectangle<int>& ComponentPeer::getNonFullScreenBounds() const noexcept
|
|
{
|
|
return lastNonFullscreenBounds;
|
|
}
|
|
|
|
Rectangle<int> ComponentPeer::localToGlobal (const Rectangle<int>& relativePosition)
|
|
{
|
|
return relativePosition.withPosition (localToGlobal (relativePosition.getPosition()));
|
|
}
|
|
|
|
Rectangle<int> ComponentPeer::globalToLocal (const Rectangle<int>& screenPosition)
|
|
{
|
|
return screenPosition.withPosition (globalToLocal (screenPosition.getPosition()));
|
|
}
|
|
|
|
//==============================================================================
|
|
namespace ComponentPeerHelpers
|
|
{
|
|
FileDragAndDropTarget* findDragAndDropTarget (Component* c,
|
|
const StringArray& files,
|
|
FileDragAndDropTarget* const lastOne)
|
|
{
|
|
while (c != nullptr)
|
|
{
|
|
FileDragAndDropTarget* const t = dynamic_cast <FileDragAndDropTarget*> (c);
|
|
|
|
if (t != nullptr && (t == lastOne || t->isInterestedInFileDrag (files)))
|
|
return t;
|
|
|
|
c = c->getParentComponent();
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
bool ComponentPeer::handleFileDragMove (const StringArray& files, const Point<int>& position)
|
|
{
|
|
updateCurrentModifiers();
|
|
|
|
FileDragAndDropTarget* lastTarget
|
|
= dynamic_cast<FileDragAndDropTarget*> (static_cast<Component*> (dragAndDropTargetComponent));
|
|
|
|
FileDragAndDropTarget* newTarget = nullptr;
|
|
|
|
Component* const compUnderMouse = component->getComponentAt (position);
|
|
|
|
if (compUnderMouse != lastDragAndDropCompUnderMouse)
|
|
{
|
|
lastDragAndDropCompUnderMouse = compUnderMouse;
|
|
newTarget = ComponentPeerHelpers::findDragAndDropTarget (compUnderMouse, files, lastTarget);
|
|
|
|
if (newTarget != lastTarget)
|
|
{
|
|
if (lastTarget != nullptr)
|
|
lastTarget->fileDragExit (files);
|
|
|
|
dragAndDropTargetComponent = nullptr;
|
|
|
|
if (newTarget != nullptr)
|
|
{
|
|
dragAndDropTargetComponent = dynamic_cast <Component*> (newTarget);
|
|
const Point<int> pos (dragAndDropTargetComponent->getLocalPoint (component, position));
|
|
newTarget->fileDragEnter (files, pos.getX(), pos.getY());
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
newTarget = lastTarget;
|
|
}
|
|
|
|
if (newTarget == nullptr)
|
|
return false;
|
|
|
|
Component* const targetComp = dynamic_cast <Component*> (newTarget);
|
|
const Point<int> pos (targetComp->getLocalPoint (component, position));
|
|
newTarget->fileDragMove (files, pos.getX(), pos.getY());
|
|
return true;
|
|
}
|
|
|
|
bool ComponentPeer::handleFileDragExit (const StringArray& files)
|
|
{
|
|
const bool used = handleFileDragMove (files, Point<int> (-1, -1));
|
|
|
|
jassert (dragAndDropTargetComponent == nullptr);
|
|
lastDragAndDropCompUnderMouse = nullptr;
|
|
return used;
|
|
}
|
|
|
|
// We'll use an async message to deliver the drop, because if the target decides
|
|
// to run a modal loop, it can gum-up the operating system..
|
|
class AsyncFileDropMessage : public CallbackMessage
|
|
{
|
|
public:
|
|
AsyncFileDropMessage (Component* target_, FileDragAndDropTarget* dropTarget_,
|
|
const Point<int>& position_, const StringArray& files_)
|
|
: target (target_), dropTarget (dropTarget_), position (position_), files (files_)
|
|
{
|
|
}
|
|
|
|
void messageCallback()
|
|
{
|
|
if (target.get() != nullptr)
|
|
dropTarget->filesDropped (files, position.getX(), position.getY());
|
|
}
|
|
|
|
private:
|
|
WeakReference<Component> target;
|
|
FileDragAndDropTarget* const dropTarget;
|
|
const Point<int> position;
|
|
const StringArray files;
|
|
|
|
JUCE_DECLARE_NON_COPYABLE (AsyncFileDropMessage);
|
|
};
|
|
|
|
bool ComponentPeer::handleFileDragDrop (const StringArray& files, const Point<int>& position)
|
|
{
|
|
handleFileDragMove (files, position);
|
|
|
|
if (dragAndDropTargetComponent != nullptr)
|
|
{
|
|
FileDragAndDropTarget* const target
|
|
= dynamic_cast<FileDragAndDropTarget*> (static_cast<Component*> (dragAndDropTargetComponent));
|
|
|
|
dragAndDropTargetComponent = nullptr;
|
|
lastDragAndDropCompUnderMouse = nullptr;
|
|
|
|
if (target != nullptr)
|
|
{
|
|
Component* const targetComp = dynamic_cast <Component*> (target);
|
|
|
|
if (targetComp->isCurrentlyBlockedByAnotherModalComponent())
|
|
{
|
|
targetComp->internalModalInputAttempt();
|
|
|
|
if (targetComp->isCurrentlyBlockedByAnotherModalComponent())
|
|
return true;
|
|
}
|
|
|
|
(new AsyncFileDropMessage (targetComp, target, targetComp->getLocalPoint (component, position), files))->post();
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
//==============================================================================
|
|
void ComponentPeer::handleUserClosingWindow()
|
|
{
|
|
updateCurrentModifiers();
|
|
component->userTriedToCloseWindow();
|
|
}
|
|
|
|
//==============================================================================
|
|
void ComponentPeer::clearMaskedRegion()
|
|
{
|
|
maskedRegion.clear();
|
|
}
|
|
|
|
void ComponentPeer::addMaskedRegion (const Rectangle<int>& area)
|
|
{
|
|
maskedRegion.add (area);
|
|
}
|
|
|
|
//==============================================================================
|
|
StringArray ComponentPeer::getAvailableRenderingEngines()
|
|
{
|
|
return StringArray ("Software Renderer");
|
|
}
|
|
|
|
int ComponentPeer::getCurrentRenderingEngine() const
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void ComponentPeer::setCurrentRenderingEngine (int /*index*/)
|
|
{
|
|
}
|
|
|
|
END_JUCE_NAMESPACE
|