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107 lines
3.8 KiB
107 lines
3.8 KiB
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2015 - ROLI 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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ResizableEdgeComponent::ResizableEdgeComponent (Component* const componentToResize,
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ComponentBoundsConstrainer* const constrainer_,
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Edge edge_)
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: component (componentToResize),
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constrainer (constrainer_),
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edge (edge_)
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{
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setRepaintsOnMouseActivity (true);
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setMouseCursor (isVertical() ? MouseCursor::LeftRightResizeCursor
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: MouseCursor::UpDownResizeCursor);
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}
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ResizableEdgeComponent::~ResizableEdgeComponent()
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{
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}
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//==============================================================================
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bool ResizableEdgeComponent::isVertical() const noexcept
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{
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return edge == leftEdge || edge == rightEdge;
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}
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void ResizableEdgeComponent::paint (Graphics& g)
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{
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getLookAndFeel().drawStretchableLayoutResizerBar (g, getWidth(), getHeight(), isVertical(),
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isMouseOver(), isMouseButtonDown());
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}
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void ResizableEdgeComponent::mouseDown (const MouseEvent&)
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{
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if (component == nullptr)
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{
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jassertfalse; // You've deleted the component that this resizer was supposed to be using!
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return;
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}
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originalBounds = component->getBounds();
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if (constrainer != nullptr)
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constrainer->resizeStart();
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}
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void ResizableEdgeComponent::mouseDrag (const MouseEvent& e)
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{
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if (component == nullptr)
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{
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jassertfalse; // You've deleted the component that this resizer was supposed to be using!
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return;
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}
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Rectangle<int> newBounds (originalBounds);
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switch (edge)
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{
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case leftEdge: newBounds.setLeft (jmin (newBounds.getRight(), newBounds.getX() + e.getDistanceFromDragStartX())); break;
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case rightEdge: newBounds.setWidth (jmax (0, newBounds.getWidth() + e.getDistanceFromDragStartX())); break;
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case topEdge: newBounds.setTop (jmin (newBounds.getBottom(), newBounds.getY() + e.getDistanceFromDragStartY())); break;
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case bottomEdge: newBounds.setHeight (jmax (0, newBounds.getHeight() + e.getDistanceFromDragStartY())); break;
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default: jassertfalse; break;
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}
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if (constrainer != nullptr)
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{
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constrainer->setBoundsForComponent (component, newBounds,
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edge == topEdge,
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edge == leftEdge,
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edge == bottomEdge,
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edge == rightEdge);
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}
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else
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{
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if (Component::Positioner* const pos = component->getPositioner())
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pos->applyNewBounds (newBounds);
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else
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component->setBounds (newBounds);
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}
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}
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void ResizableEdgeComponent::mouseUp (const MouseEvent&)
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{
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if (constrainer != nullptr)
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constrainer->resizeEnd();
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}
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