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101 lines
3.9 KiB
C++
101 lines
3.9 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2013 - Raw Material Software Ltd.
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Permission is granted to use this software under the terms of either:
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a) the GPL v2 (or any later version)
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b) the Affero GPL v3
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Details of these licenses can be found 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.juce.com for more information.
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==============================================================================
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*/
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#ifndef __JUCE_RESIZABLEEDGECOMPONENT_JUCEHEADER__
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#define __JUCE_RESIZABLEEDGECOMPONENT_JUCEHEADER__
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#include "juce_ComponentBoundsConstrainer.h"
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//==============================================================================
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/**
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A component that resizes its parent component when dragged.
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This component forms a bar along one edge of a component, allowing it to
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be dragged by that edges to resize it.
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To use it, just add it to your component, positioning it along the appropriate
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edge. Make sure you reposition the resizer component each time the parent's size
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changes, to keep it in the correct position.
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@see ResizbleBorderComponent, ResizableCornerComponent
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*/
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class JUCE_API ResizableEdgeComponent : public Component
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{
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public:
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//==============================================================================
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enum Edge
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{
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leftEdge, /**< Indicates a vertical bar that can be dragged left/right to move the component's left-hand edge. */
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rightEdge, /**< Indicates a vertical bar that can be dragged left/right to move the component's right-hand edge. */
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topEdge, /**< Indicates a horizontal bar that can be dragged up/down to move the top of the component. */
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bottomEdge /**< Indicates a horizontal bar that can be dragged up/down to move the bottom of the component. */
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};
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/** Creates a resizer bar.
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Pass in the target component which you want to be resized when this one is
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dragged. The target component will usually be this component's parent, but this
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isn't mandatory.
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Remember that when the target component is resized, it'll need to move and
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resize this component to keep it in place, as this won't happen automatically.
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If the constrainer parameter is non-zero, then this object will be used to enforce
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limits on the size and position that the component can be stretched to. Make sure
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that the constrainer isn't deleted while still in use by this object.
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@see ComponentBoundsConstrainer
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*/
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ResizableEdgeComponent (Component* componentToResize,
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ComponentBoundsConstrainer* constrainer,
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Edge edgeToResize);
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/** Destructor. */
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~ResizableEdgeComponent();
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bool isVertical() const noexcept;
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protected:
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//==============================================================================
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/** @internal */
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void paint (Graphics& g);
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/** @internal */
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void mouseDown (const MouseEvent& e);
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/** @internal */
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void mouseDrag (const MouseEvent& e);
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/** @internal */
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void mouseUp (const MouseEvent& e);
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private:
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WeakReference<Component> component;
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ComponentBoundsConstrainer* constrainer;
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Rectangle<int> originalBounds;
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const Edge edge;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ResizableEdgeComponent)
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};
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#endif // __JUCE_RESIZABLEEDGECOMPONENT_JUCEHEADER__
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