mirror of https://github.com/dcoredump/dexed.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
95 lines
3.9 KiB
95 lines
3.9 KiB
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE library.
|
|
Copyright (c) 2015 - ROLI Ltd.
|
|
|
|
Permission is granted to use this software under the terms of either:
|
|
a) the GPL v2 (or any later version)
|
|
b) the Affero GPL v3
|
|
|
|
Details of these licenses can be found 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.juce.com for more information.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
#ifndef JUCE_COMPONENTMOVEMENTWATCHER_H_INCLUDED
|
|
#define JUCE_COMPONENTMOVEMENTWATCHER_H_INCLUDED
|
|
|
|
|
|
//==============================================================================
|
|
/** An object that watches for any movement of a component or any of its parent components.
|
|
|
|
This makes it easy to check when a component is moved relative to its top-level
|
|
peer window. The normal Component::moved() method is only called when a component
|
|
moves relative to its immediate parent, and sometimes you want to know if any of
|
|
components higher up the tree have moved (which of course will affect the overall
|
|
position of all their sub-components).
|
|
|
|
It also includes a callback that lets you know when the top-level peer is changed.
|
|
|
|
This class is used by specialised components like WebBrowserComponent or QuickTimeComponent
|
|
because they need to keep their custom windows in the right place and respond to
|
|
changes in the peer.
|
|
*/
|
|
class JUCE_API ComponentMovementWatcher : public ComponentListener
|
|
{
|
|
public:
|
|
//==============================================================================
|
|
/** Creates a ComponentMovementWatcher to watch a given target component. */
|
|
ComponentMovementWatcher (Component* component);
|
|
|
|
/** Destructor. */
|
|
~ComponentMovementWatcher();
|
|
|
|
//==============================================================================
|
|
/** This callback happens when the component that is being watched is moved
|
|
relative to its top-level peer window, or when it is resized. */
|
|
virtual void componentMovedOrResized (bool wasMoved, bool wasResized) = 0;
|
|
|
|
/** This callback happens when the component's top-level peer is changed. */
|
|
virtual void componentPeerChanged() = 0;
|
|
|
|
/** This callback happens when the component's visibility state changes, possibly due to
|
|
one of its parents being made visible or invisible.
|
|
*/
|
|
virtual void componentVisibilityChanged() = 0;
|
|
|
|
/** Returns the component that's being watched. */
|
|
Component* getComponent() const noexcept { return component; }
|
|
|
|
//==============================================================================
|
|
/** @internal */
|
|
void componentParentHierarchyChanged (Component&) override;
|
|
/** @internal */
|
|
void componentMovedOrResized (Component&, bool wasMoved, bool wasResized) override;
|
|
/** @internal */
|
|
void componentBeingDeleted (Component&) override;
|
|
/** @internal */
|
|
void componentVisibilityChanged (Component&) override;
|
|
|
|
private:
|
|
//==============================================================================
|
|
WeakReference<Component> component;
|
|
uint32 lastPeerID;
|
|
Array <Component*> registeredParentComps;
|
|
bool reentrant, wasShowing;
|
|
Rectangle<int> lastBounds;
|
|
|
|
void unregister();
|
|
void registerWithParentComps();
|
|
|
|
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ComponentMovementWatcher)
|
|
};
|
|
|
|
|
|
#endif // JUCE_COMPONENTMOVEMENTWATCHER_H_INCLUDED
|
|
|