115 lines
3.8 KiB
C++
115 lines
3.8 KiB
C++
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2017 - ROLI Ltd.
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 5 End-User License
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Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
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27th April 2017).
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End User License Agreement: www.juce.com/juce-5-licence
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Privacy Policy: www.juce.com/juce-5-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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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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} // namespace juce
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