mirror of
https://github.com/juce-framework/JUCE.git
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279 lines
9.2 KiB
C++
279 lines
9.2 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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CallOutBox::CallOutBox (Component& c, Rectangle<int> area, Component* const parent)
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: content (c)
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{
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addAndMakeVisible (content);
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if (parent != nullptr)
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{
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parent->addChildComponent (this);
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updatePosition (area, parent->getLocalBounds());
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setVisible (true);
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}
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else
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{
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setAlwaysOnTop (WindowUtils::areThereAnyAlwaysOnTopWindows());
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updatePosition (area, Desktop::getInstance().getDisplays().getDisplayForRect (area)->userArea);
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addToDesktop (ComponentPeer::windowIsTemporary);
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startTimer (100);
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}
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creationTime = Time::getCurrentTime();
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}
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//==============================================================================
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class CallOutBoxCallback final : public ModalComponentManager::Callback,
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private Timer
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{
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public:
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CallOutBoxCallback (std::unique_ptr<Component> c, const Rectangle<int>& area, Component* parent)
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: content (std::move (c)),
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callout (*content, area, parent)
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{
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callout.setVisible (true);
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callout.enterModalState (true, this);
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startTimer (200);
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}
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void modalStateFinished (int) override {}
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void timerCallback() override
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{
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if (! detail::WindowingHelpers::isForegroundOrEmbeddedProcess (&callout))
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callout.dismiss();
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}
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std::unique_ptr<Component> content;
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CallOutBox callout;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (CallOutBoxCallback)
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};
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CallOutBox& CallOutBox::launchAsynchronously (std::unique_ptr<Component> content, Rectangle<int> area, Component* parent)
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{
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jassert (content != nullptr); // must be a valid content component!
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return (new CallOutBoxCallback (std::move (content), area, parent))->callout;
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}
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//==============================================================================
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void CallOutBox::setArrowSize (const float newSize)
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{
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arrowSize = newSize;
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refreshPath();
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}
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int CallOutBox::getBorderSize() const noexcept
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{
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return jmax (getLookAndFeel().getCallOutBoxBorderSize (*this), (int) arrowSize);
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}
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void CallOutBox::lookAndFeelChanged()
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{
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resized();
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}
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void CallOutBox::paint (Graphics& g)
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{
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getLookAndFeel().drawCallOutBoxBackground (*this, g, outline, background);
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}
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void CallOutBox::resized()
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{
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auto borderSpace = getBorderSize();
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content.setTopLeftPosition (borderSpace, borderSpace);
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refreshPath();
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}
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void CallOutBox::moved()
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{
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refreshPath();
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}
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void CallOutBox::childBoundsChanged (Component*)
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{
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updatePosition (targetArea, availableArea);
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}
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bool CallOutBox::hitTest (int x, int y)
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{
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return outline.contains ((float) x, (float) y);
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}
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void CallOutBox::inputAttemptWhenModal()
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{
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if (dismissalMouseClicksAreAlwaysConsumed
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|| targetArea.contains (getMouseXYRelative() + getBounds().getPosition()))
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{
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// if you click on the area that originally popped-up the callout, you expect it
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// to get rid of the box, but deleting the box here allows the click to pass through and
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// probably re-trigger it, so we need to dismiss the box asynchronously to consume the click
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// For touchscreens, we make sure not to dismiss the CallOutBox immediately,
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// as Windows still sends touch events before the CallOutBox had a chance
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// to really open.
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auto elapsed = Time::getCurrentTime() - creationTime;
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if (elapsed.inMilliseconds() > 200)
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dismiss();
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}
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else
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{
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exitModalState (0);
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setVisible (false);
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}
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}
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void CallOutBox::setDismissalMouseClicksAreAlwaysConsumed (bool b) noexcept
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{
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dismissalMouseClicksAreAlwaysConsumed = b;
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}
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static constexpr int callOutBoxDismissCommandId = 0x4f83a04b;
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void CallOutBox::handleCommandMessage (int commandId)
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{
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Component::handleCommandMessage (commandId);
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if (commandId == callOutBoxDismissCommandId)
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{
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exitModalState (0);
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setVisible (false);
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}
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}
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void CallOutBox::dismiss()
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{
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postCommandMessage (callOutBoxDismissCommandId);
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}
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bool CallOutBox::keyPressed (const KeyPress& key)
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{
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if (key.isKeyCode (KeyPress::escapeKey))
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{
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inputAttemptWhenModal();
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return true;
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}
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return false;
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}
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void CallOutBox::updatePosition (const Rectangle<int>& newAreaToPointTo, const Rectangle<int>& newAreaToFitIn)
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{
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targetArea = newAreaToPointTo;
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availableArea = newAreaToFitIn;
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auto borderSpace = getBorderSize();
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auto newBounds = getLocalArea (&content, Rectangle<int> (content.getWidth() + borderSpace * 2,
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content.getHeight() + borderSpace * 2));
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auto hw = newBounds.getWidth() / 2;
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auto hh = newBounds.getHeight() / 2;
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auto hwReduced = (float) (hw - borderSpace * 2);
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auto hhReduced = (float) (hh - borderSpace * 2);
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auto arrowIndent = (float) borderSpace - arrowSize;
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Point<float> targets[4] = { { (float) targetArea.getCentreX(), (float) targetArea.getBottom() },
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{ (float) targetArea.getRight(), (float) targetArea.getCentreY() },
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{ (float) targetArea.getX(), (float) targetArea.getCentreY() },
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{ (float) targetArea.getCentreX(), (float) targetArea.getY() } };
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Line<float> lines[4] = { { targets[0].translated (-hwReduced, hh - arrowIndent), targets[0].translated (hwReduced, hh - arrowIndent) },
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{ targets[1].translated (hw - arrowIndent, -hhReduced), targets[1].translated (hw - arrowIndent, hhReduced) },
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{ targets[2].translated (-(hw - arrowIndent), -hhReduced), targets[2].translated (-(hw - arrowIndent), hhReduced) },
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{ targets[3].translated (-hwReduced, -(hh - arrowIndent)), targets[3].translated (hwReduced, -(hh - arrowIndent)) } };
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auto centrePointArea = newAreaToFitIn.reduced (hw, hh).toFloat();
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auto targetCentre = targetArea.getCentre().toFloat();
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float nearest = 1.0e9f;
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for (int i = 0; i < 4; ++i)
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{
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Line<float> constrainedLine (centrePointArea.getConstrainedPoint (lines[i].getStart()),
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centrePointArea.getConstrainedPoint (lines[i].getEnd()));
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auto centre = constrainedLine.findNearestPointTo (targetCentre);
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auto distanceFromCentre = centre.getDistanceFrom (targets[i]);
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if (! centrePointArea.intersects (lines[i]))
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distanceFromCentre += 1000.0f;
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if (distanceFromCentre < nearest)
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{
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nearest = distanceFromCentre;
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targetPoint = targets[i];
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newBounds.setPosition ((int) (centre.x - (float) hw),
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(int) (centre.y - (float) hh));
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}
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}
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setBounds (newBounds);
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}
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void CallOutBox::refreshPath()
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{
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repaint();
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background = {};
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outline.clear();
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const float gap = 4.5f;
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outline.addBubble (getLocalArea (&content, content.getLocalBounds().toFloat()).expanded (gap, gap),
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getLocalBounds().toFloat(),
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targetPoint - getPosition().toFloat(),
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getLookAndFeel().getCallOutBoxCornerSize (*this), arrowSize * 0.7f);
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}
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void CallOutBox::timerCallback()
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{
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toFront (true);
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stopTimer();
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}
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//==============================================================================
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std::unique_ptr<AccessibilityHandler> CallOutBox::createAccessibilityHandler()
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{
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return std::make_unique<AccessibilityHandler> (*this, AccessibilityRole::dialogWindow);
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}
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} // namespace juce
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