102 lines
3.8 KiB
C++
102 lines
3.8 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE library.
|
|
Copyright (c) 2017 - ROLI Ltd.
|
|
|
|
JUCE is an open source library subject to commercial or open-source
|
|
licensing.
|
|
|
|
By using JUCE, you agree to the terms of both the JUCE 5 End-User License
|
|
Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
|
|
27th April 2017).
|
|
|
|
End User License Agreement: www.juce.com/juce-5-licence
|
|
Privacy Policy: www.juce.com/juce-5-privacy-policy
|
|
|
|
Or: You may also use this code under the terms of the GPL v3 (see
|
|
www.gnu.org/licenses).
|
|
|
|
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
|
|
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
|
|
DISCLAIMED.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
namespace juce
|
|
{
|
|
|
|
//==============================================================================
|
|
/**
|
|
A component that resizes its parent component when dragged.
|
|
|
|
This component forms a bar along one edge of a component, allowing it to
|
|
be dragged by that edges to resize it.
|
|
|
|
To use it, just add it to your component, positioning it along the appropriate
|
|
edge. Make sure you reposition the resizer component each time the parent's size
|
|
changes, to keep it in the correct position.
|
|
|
|
@see ResizbleBorderComponent, ResizableCornerComponent
|
|
|
|
@tags{GUI}
|
|
*/
|
|
class JUCE_API ResizableEdgeComponent : public Component
|
|
{
|
|
public:
|
|
//==============================================================================
|
|
enum Edge
|
|
{
|
|
leftEdge, /**< Indicates a vertical bar that can be dragged left/right to move the component's left-hand edge. */
|
|
rightEdge, /**< Indicates a vertical bar that can be dragged left/right to move the component's right-hand edge. */
|
|
topEdge, /**< Indicates a horizontal bar that can be dragged up/down to move the top of the component. */
|
|
bottomEdge /**< Indicates a horizontal bar that can be dragged up/down to move the bottom of the component. */
|
|
};
|
|
|
|
/** Creates a resizer bar.
|
|
|
|
Pass in the target component which you want to be resized when this one is
|
|
dragged. The target component will usually be this component's parent, but this
|
|
isn't mandatory.
|
|
|
|
Remember that when the target component is resized, it'll need to move and
|
|
resize this component to keep it in place, as this won't happen automatically.
|
|
|
|
If the constrainer parameter is not a nullptr, then this object will be used to
|
|
enforce limits on the size and position that the component can be stretched to.
|
|
Make sure that the constrainer isn't deleted while still in use by this object.
|
|
|
|
@see ComponentBoundsConstrainer
|
|
*/
|
|
ResizableEdgeComponent (Component* componentToResize,
|
|
ComponentBoundsConstrainer* constrainer,
|
|
Edge edgeToResize);
|
|
|
|
/** Destructor. */
|
|
~ResizableEdgeComponent();
|
|
|
|
bool isVertical() const noexcept;
|
|
|
|
protected:
|
|
//==============================================================================
|
|
/** @internal */
|
|
void paint (Graphics&) override;
|
|
/** @internal */
|
|
void mouseDown (const MouseEvent&) override;
|
|
/** @internal */
|
|
void mouseDrag (const MouseEvent&) override;
|
|
/** @internal */
|
|
void mouseUp (const MouseEvent&) override;
|
|
|
|
private:
|
|
WeakReference<Component> component;
|
|
ComponentBoundsConstrainer* constrainer;
|
|
Rectangle<int> originalBounds;
|
|
const Edge edge;
|
|
|
|
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ResizableEdgeComponent)
|
|
};
|
|
|
|
} // namespace juce
|