Steve Pham
38261d0800
* Updated all copyright headers to split the longer original copyright line into 2 shorter lines Signed-off-by: Steve Pham <spham@amazon.com>
94 lines
3.7 KiB
C++
94 lines
3.7 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project.
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* For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#pragma once
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#include <AzQtComponents/AzQtComponentsAPI.h>
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#include <QObject>
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#include <QPointer>
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#include <QWindow>
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class QKeyEvent;
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namespace AzQtComponents
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{
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/* This class is used to implement window resizing and moving through the keyboard.
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* This implement the "Size" and "Move" functionality that can be used by right clicking
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* the title bar.
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*/
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class AZ_QT_COMPONENTS_API InteractiveWindowGeometryChanger
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: public QObject
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{
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Q_DISABLE_COPY(InteractiveWindowGeometryChanger)
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public:
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// The ctor changes the mouse cursor and installs a global event filter
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explicit InteractiveWindowGeometryChanger(QWindow* target, QObject* parent);
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// The dtor restores the mouse cursor and uninstalls the event filter
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~InteractiveWindowGeometryChanger();
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protected:
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bool eventFilter(QObject* watched, QEvent* ev) override;
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virtual void handleKeyPress(QKeyEvent*) = 0;
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virtual void handleMouseMove(QMouseEvent*) = 0;
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void restoreCursorPosition();
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AZ_PUSH_DISABLE_WARNING(4251, "-Wunknown-warning-option") // 4251: 'AzQtComponents::InteractiveWindowGeometryChanger::m_targetWindow': class 'QPointer<QWindow>' needs to have dll-interface to be used by clients of class 'AzQtComponents::InteractiveWindowGeometryChanger'
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QPointer<QWindow> m_targetWindow;
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AZ_POP_DISABLE_WARNING
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const QPoint m_originalCursorPos;
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bool m_restoreCursorAtExit = true;
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};
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// This implementation handles arrow key presses and resizes the window accordingly
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class AZ_QT_COMPONENTS_API InteractiveWindowResizer : public InteractiveWindowGeometryChanger
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{
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public:
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/*
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* Windows resizing works like this, right click title bar, choose "Size"
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* then the first arrow key you press will determine if you're resizing the left, top, bottom or right
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* the second arrow key press will effectively resize the window.
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*/
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enum SideToResize
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{
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NoneSide = 0,
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LeftSide = 1,
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RightSide = 2,
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TopSide = 4,
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BottomSide = 8,
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};
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Q_DECLARE_FLAGS(SidesToResize, SideToResize)
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explicit InteractiveWindowResizer(QWindow* target, QObject* parent);
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protected:
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void handleKeyPress(QKeyEvent*) override;
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void handleMouseMove(QMouseEvent*) override;
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private:
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void updateCursor();
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SideToResize keyToSide(int key) const;
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bool sideIsVertical(SidesToResize) const;
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bool sideIsHorizontal(SidesToResize) const;
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bool sideIsCorner(SidesToResize) const;
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AZ_PUSH_DISABLE_WARNING(4251, "-Wunknown-warning-option") // 4251: 'AzQtComponents::InteractiveWindowResizer::m_sideToResize': class 'QFlags<AzQtComponents::InteractiveWindowResizer::SideToResize>' needs to have dll-interface to be used by clients of class 'AzQtComponents::InteractiveWindowResizer'
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SidesToResize m_sideToResize = NoneSide;
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AZ_POP_DISABLE_WARNING
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};
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// This implementation handles arrow key presses and moves the window accordingly
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class AZ_QT_COMPONENTS_API InteractiveWindowMover : public InteractiveWindowGeometryChanger
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{
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public:
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explicit InteractiveWindowMover(QWindow* target, QObject* parent);
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protected:
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void handleKeyPress(QKeyEvent*) override;
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void handleMouseMove(QMouseEvent*) override;
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bool m_arrowAlreadyPressed = false;
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};
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} // namespace AzQtComponents
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