mirror of
https://github.com/juce-framework/JUCE.git
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139 lines
5 KiB
C++
139 lines
5 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE framework.
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Copyright (c) Raw Material Software Limited
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JUCE is an open source framework subject to commercial or open source
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licensing.
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By downloading, installing, or using the JUCE framework, or combining the
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JUCE framework with any other source code, object code, content or any other
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copyrightable work, you agree to the terms of the JUCE End User Licence
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Agreement, and all incorporated terms including the JUCE Privacy Policy and
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the JUCE Website Terms of Service, as applicable, which will bind you. If you
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do not agree to the terms of these agreements, we will not license the JUCE
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framework to you, and you must discontinue the installation or download
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process and cease use of the JUCE framework.
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JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
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JUCE Privacy Policy: https://juce.com/juce-privacy-policy
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JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
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Or:
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You may also use this code under the terms of the AGPLv3:
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https://www.gnu.org/licenses/agpl-3.0.en.html
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THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
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WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
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MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE 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* componentToResize,
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ComponentBoundsConstrainer* boundsConstrainer,
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Edge e)
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: component (componentToResize),
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constrainer (boundsConstrainer),
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edge (e)
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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() = default;
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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& 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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originalBounds = component->getBounds();
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using Zone = ResizableBorderComponent::Zone;
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const Zone zone { [&]
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{
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switch (edge)
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{
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case Edge::leftEdge: return Zone::left;
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case Edge::rightEdge: return Zone::right;
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case Edge::topEdge: return Zone::top;
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case Edge::bottomEdge: return Zone::bottom;
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}
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return Zone::centre;
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}() };
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if (auto* peer = component->getPeer())
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if (&peer->getComponent() == component)
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peer->startHostManagedResize (peer->globalToLocal (localPointToGlobal (e.getPosition())), zone);
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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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auto 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 (auto* p = component->getPositioner())
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p->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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