mirror of
https://github.com/juce-framework/JUCE.git
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153 lines
4.9 KiB
C++
153 lines
4.9 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2020 - Raw Material Software Limited
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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 6 End-User License
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Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
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End User License Agreement: www.juce.com/juce-6-licence
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Privacy Policy: www.juce.com/juce-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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class MouseCursor::SharedCursorHandle
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{
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public:
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explicit SharedCursorHandle (const MouseCursor::StandardCursorType type)
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: handle (type),
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standardType (type),
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standard (true)
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{
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}
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SharedCursorHandle (const ScaledImage& image, Point<int> hotSpot)
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: info { image, hotSpot },
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handle (info),
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standardType (MouseCursor::NormalCursor),
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standard (false)
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{
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// your hotspot needs to be within the bounds of the image!
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jassert (image.getScaledBounds().toNearestInt().contains (hotSpot));
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}
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static std::shared_ptr<SharedCursorHandle> createStandard (const MouseCursor::StandardCursorType type)
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{
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if (! isPositiveAndBelow (type, MouseCursor::NumStandardCursorTypes))
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return nullptr;
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static SpinLock mutex;
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static std::array<std::weak_ptr<SharedCursorHandle>, MouseCursor::NumStandardCursorTypes> cursors;
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const SpinLock::ScopedLockType sl (mutex);
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auto& weak = cursors[type];
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if (auto strong = weak.lock())
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return strong;
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auto strong = std::make_shared<SharedCursorHandle> (type);
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weak = strong;
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return strong;
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}
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bool isStandardType (MouseCursor::StandardCursorType type) const noexcept
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{
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return type == standardType && standard;
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}
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PlatformSpecificHandle* getHandle() noexcept { return &handle; }
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MouseCursor::StandardCursorType getType() const noexcept { return standardType; }
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private:
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CustomMouseCursorInfo info;
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PlatformSpecificHandle handle;
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const MouseCursor::StandardCursorType standardType;
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const bool standard;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (SharedCursorHandle)
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};
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//==============================================================================
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MouseCursor::MouseCursor() noexcept = default;
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MouseCursor::MouseCursor (const StandardCursorType type)
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: cursorHandle (type != MouseCursor::NormalCursor ? SharedCursorHandle::createStandard (type) : nullptr)
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{
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}
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MouseCursor::MouseCursor (const Image& image, int hotSpotX, int hotSpotY)
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: MouseCursor (ScaledImage (image), { hotSpotX, hotSpotY })
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{
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}
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MouseCursor::MouseCursor (const Image& image, int hotSpotX, int hotSpotY, float scaleFactor)
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: MouseCursor (ScaledImage (image, scaleFactor), { hotSpotX, hotSpotY })
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{
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}
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MouseCursor::MouseCursor (const ScaledImage& image, Point<int> hotSpot)
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: cursorHandle (std::make_shared<SharedCursorHandle> (image, hotSpot))
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{
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}
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MouseCursor::MouseCursor (const MouseCursor&) = default;
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MouseCursor::~MouseCursor() = default;
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MouseCursor& MouseCursor::operator= (const MouseCursor&) = default;
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MouseCursor::MouseCursor (MouseCursor&&) noexcept = default;
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MouseCursor& MouseCursor::operator= (MouseCursor&&) noexcept = default;
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bool MouseCursor::operator== (const MouseCursor& other) const noexcept
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{
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return getHandle() == other.getHandle();
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}
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bool MouseCursor::operator== (StandardCursorType type) const noexcept
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{
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return cursorHandle != nullptr ? cursorHandle->isStandardType (type)
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: (type == NormalCursor);
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}
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bool MouseCursor::operator!= (const MouseCursor& other) const noexcept { return ! operator== (other); }
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bool MouseCursor::operator!= (StandardCursorType type) const noexcept { return ! operator== (type); }
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void MouseCursor::showWaitCursor()
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{
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Desktop::getInstance().getMainMouseSource().showMouseCursor (MouseCursor::WaitCursor);
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}
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void MouseCursor::hideWaitCursor()
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{
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Desktop::getInstance().getMainMouseSource().revealCursor();
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}
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MouseCursor::PlatformSpecificHandle* MouseCursor::getHandle() const noexcept
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{
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return cursorHandle != nullptr ? cursorHandle->getHandle() : nullptr;
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}
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void MouseCursor::showInWindow (ComponentPeer* peer) const
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{
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PlatformSpecificHandle::showInWindow (getHandle(), peer);
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}
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} // namespace juce
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