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.
101 lines
3.7 KiB
101 lines
3.7 KiB
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE library.
|
|
Copyright (c) 2013 - Raw Material Software 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_COMPONENTDRAGGER_H_INCLUDED
|
|
#define JUCE_COMPONENTDRAGGER_H_INCLUDED
|
|
|
|
|
|
//==============================================================================
|
|
/**
|
|
An object to take care of the logic for dragging components around with the mouse.
|
|
|
|
Very easy to use - in your mouseDown() callback, call startDraggingComponent(),
|
|
then in your mouseDrag() callback, call dragComponent().
|
|
|
|
When starting a drag, you can give it a ComponentBoundsConstrainer to use
|
|
to limit the component's position and keep it on-screen.
|
|
|
|
e.g. @code
|
|
class MyDraggableComp
|
|
{
|
|
ComponentDragger myDragger;
|
|
|
|
void mouseDown (const MouseEvent& e)
|
|
{
|
|
myDragger.startDraggingComponent (this, e);
|
|
}
|
|
|
|
void mouseDrag (const MouseEvent& e)
|
|
{
|
|
myDragger.dragComponent (this, e, nullptr);
|
|
}
|
|
};
|
|
@endcode
|
|
*/
|
|
class JUCE_API ComponentDragger
|
|
{
|
|
public:
|
|
//==============================================================================
|
|
/** Creates a ComponentDragger. */
|
|
ComponentDragger();
|
|
|
|
/** Destructor. */
|
|
virtual ~ComponentDragger();
|
|
|
|
//==============================================================================
|
|
/** Call this from your component's mouseDown() method, to prepare for dragging.
|
|
|
|
@param componentToDrag the component that you want to drag
|
|
@param e the mouse event that is triggering the drag
|
|
@see dragComponent
|
|
*/
|
|
void startDraggingComponent (Component* componentToDrag,
|
|
const MouseEvent& e);
|
|
|
|
/** Call this from your mouseDrag() callback to move the component.
|
|
|
|
This will move the component, but will first check the validity of the
|
|
component's new position using the checkPosition() method, which you
|
|
can override if you need to enforce special positioning limits on the
|
|
component.
|
|
|
|
@param componentToDrag the component that you want to drag
|
|
@param e the current mouse-drag event
|
|
@param constrainer an optional constrainer object that should be used
|
|
to apply limits to the component's position. Pass
|
|
null if you don't want to contrain the movement.
|
|
@see startDraggingComponent
|
|
*/
|
|
void dragComponent (Component* componentToDrag,
|
|
const MouseEvent& e,
|
|
ComponentBoundsConstrainer* constrainer);
|
|
|
|
private:
|
|
//==============================================================================
|
|
Point<int> mouseDownWithinTarget;
|
|
|
|
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ComponentDragger)
|
|
};
|
|
|
|
#endif // JUCE_COMPONENTDRAGGER_H_INCLUDED
|
|
|