| 1 | /* $Id: UIMachineView.h 106061 2024-09-16 14:03:52Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBox Qt GUI - UIMachineView class declaration.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2010-2024 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * SPDX-License-Identifier: GPL-3.0-only
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| 26 | */
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| 27 |
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| 28 | #ifndef FEQT_INCLUDED_SRC_runtime_UIMachineView_h
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| 29 | #define FEQT_INCLUDED_SRC_runtime_UIMachineView_h
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| 30 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 31 | # pragma once
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| 32 | #endif
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| 33 |
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| 34 | /* Qt includes: */
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| 35 | #include <QAbstractScrollArea>
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| 36 | #include <QEventLoop>
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| 37 |
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| 38 | /* GUI includes: */
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| 39 | #include "UIExtraDataDefs.h"
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| 40 | #include "UIFrameBuffer.h"
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| 41 | #include "UIMachineDefs.h"
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| 42 | #ifdef VBOX_WITH_DRAG_AND_DROP
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| 43 | # include "UIDnDHandler.h"
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| 44 | #endif /* VBOX_WITH_DRAG_AND_DROP */
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| 45 |
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| 46 | /* COM includes: */
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| 47 | #include "KMachineState.h"
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| 48 |
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| 49 | /* Other VBox includes: */
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| 50 | #include "VBox/com/ptr.h"
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| 51 | #ifdef VBOX_WS_MAC
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| 52 | # include <ApplicationServices/ApplicationServices.h>
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| 53 | #endif /* VBOX_WS_MAC */
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| 54 |
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| 55 | /* External includes: */
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| 56 | #ifdef VBOX_WS_MAC
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| 57 | # include <CoreFoundation/CFBase.h>
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| 58 | #endif /* VBOX_WS_MAC */
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| 59 |
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| 60 | /* Forward declarations: */
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| 61 | class UIActionPool;
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| 62 | class UIMachine;
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| 63 | class UIMachineLogic;
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| 64 | class UIMachineWindow;
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| 65 | class UINativeEventFilter;
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| 66 | class CGuest;
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| 67 | class CSession;
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| 68 | #ifdef VBOX_WITH_DRAG_AND_DROP
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| 69 | class CDnDTarget;
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| 70 | #endif
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| 71 |
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| 72 |
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| 73 | class UIMachineView : public QAbstractScrollArea
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| 74 | {
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| 75 | Q_OBJECT;
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| 76 |
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| 77 | signals:
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| 78 |
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| 79 | /** Notifies about mouse pointer shape change. */
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| 80 | void sigMousePointerShapeChange();
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| 81 | /** Notifies about frame-buffer resize. */
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| 82 | void sigFrameBufferResize();
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| 83 |
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| 84 | public:
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| 85 |
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| 86 | /* Factory function to create machine-view: */
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| 87 | static UIMachineView* create(UIMachineWindow *pMachineWindow, ulong uScreenId, UIVisualStateType visualStateType);
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| 88 | /* Factory function to destroy required machine-view: */
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| 89 | static void destroy(UIMachineView *pMachineView);
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| 90 |
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| 91 | /** Returns whether the guest-screen auto-resize is enabled. */
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| 92 | virtual bool isGuestAutoresizeEnabled() const { return true; }
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| 93 | /** Defines whether the guest-screen auto-resize is @a fEnabled. */
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| 94 | virtual void setGuestAutoresizeEnabled(bool fEnabled) { Q_UNUSED(fEnabled); }
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| 95 |
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| 96 | /** Send saved guest-screen size-hint to the guest.
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| 97 | * @note Reimplemented in sub-classes. Base implementation does nothing. */
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| 98 | virtual void resendSizeHint() {}
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| 99 |
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| 100 | /** Adjusts guest-screen size to correspond current visual-style.
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| 101 | * @note Reimplemented in sub-classes. Base implementation does nothing. */
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| 102 | virtual void adjustGuestScreenSize() {}
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| 103 |
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| 104 | /** Applies machine-view scale-factor. */
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| 105 | virtual void applyMachineViewScaleFactor();
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| 106 |
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| 107 | /** Returns screen ID for this view. */
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| 108 | ulong screenId() const { return m_uScreenId; }
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| 109 |
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| 110 | /** Returns the machine UI reference. */
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| 111 | UIMachine *uimachine() const;
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| 112 | /** Returns the machine-logic reference. */
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| 113 | UIMachineLogic *machineLogic() const;
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| 114 | /** Returns the machine-window reference. */
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| 115 | UIMachineWindow *machineWindow() const { return m_pMachineWindow; }
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| 116 | /** Returns view's frame-buffer reference. */
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| 117 | UIFrameBuffer *frameBuffer() const;
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| 118 |
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| 119 | /** Returns actual contents width. */
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| 120 | int contentsWidth() const;
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| 121 | /** Returns actual contents height. */
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| 122 | int contentsHeight() const;
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| 123 | /** Returns actual contents x origin. */
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| 124 | int contentsX() const;
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| 125 | /** Returns actual contents y origin. */
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| 126 | int contentsY() const;
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| 127 | /** Returns visible contents width. */
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| 128 | int visibleWidth() const;
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| 129 | /** Returns visible contents height. */
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| 130 | int visibleHeight() const;
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| 131 | /** Translates viewport point to contents point. */
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| 132 | QPoint viewportToContents(const QPoint &viewportPoint) const;
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| 133 | /** Scrolls contents by @a iDx x iDy pixels. */
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| 134 | void scrollBy(int iDx, int iDy);
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| 135 |
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| 136 | /** What view mode (normal, fullscreen etc.) are we in? */
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| 137 | UIVisualStateType visualStateType() const;
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| 138 |
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| 139 | /** Returns cached mouse cursor. */
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| 140 | QCursor cursor() const { return m_cursor; }
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| 141 |
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| 142 | /* Framebuffer aspect ratio: */
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| 143 | double aspectRatio() const;
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| 144 |
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| 145 | /** Atomically store the maximum guest resolution which we currently wish
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| 146 | * to handle for @a maximumGuestSize() to read. Should be called if anything
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| 147 | * happens (e.g. a screen hotplug) which might cause the value to change.
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| 148 | * @sa m_u64MaximumGuestSize. */
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| 149 | void setMaximumGuestSize(const QSize &minimumSizeHint = QSize());
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| 150 | /** Atomically read the maximum guest resolution which we currently wish to
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| 151 | * handle. This may safely be called from another thread (called by
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| 152 | * UIFramebuffer on EMT).
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| 153 | * @sa m_u64MaximumGuestSize. */
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| 154 | QSize maximumGuestSize();
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| 155 |
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| 156 | /** Updates console's display viewport.
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| 157 | * @remarks Used to update 3D-service overlay viewport as well. */
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| 158 | void updateViewport();
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| 159 |
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| 160 | #ifdef VBOX_WITH_DRAG_AND_DROP
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| 161 | /** Checks for a pending drag and drop event within the guest and
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| 162 | * (optionally) starts a drag and drop operation on the host. */
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| 163 | int dragCheckPending();
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| 164 | /** Starts a drag and drop operation from guest to the host.
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| 165 | * This internally either uses Qt's abstract QDrag methods
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| 166 | * or some other OS-dependent implementation. */
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| 167 | int dragStart();
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| 168 | /** Aborts (and resets) the current (pending)
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| 169 | * guest to host drag and drop operation. */
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| 170 | int dragStop();
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| 171 | #endif /* VBOX_WITH_DRAG_AND_DROP */
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| 172 |
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| 173 | /** Performs pre-processing of all the native events. */
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| 174 | virtual bool nativeEventPreprocessor(const QByteArray &eventType, void *pMessage);
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| 175 |
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| 176 | #ifdef VBOX_WS_MAC
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| 177 | /** Returns VM contents image. */
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| 178 | CGImageRef vmContentImage();
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| 179 | #endif
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| 180 |
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| 181 | public slots:
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| 182 |
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| 183 | /** Handles NotifyChange event received from frame-buffer.
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| 184 | * @todo To make it right, this have to be protected, but
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| 185 | * connection should be moved from frame-buffer to this class. */
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| 186 | virtual void sltHandleNotifyChange(int iWidth, int iHeight);
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| 187 |
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| 188 | /** Handles NotifyUpdate event received from frame-buffer.
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| 189 | * @todo To make it right, this have to be protected, but
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| 190 | * connection should be moved from frame-buffer to this class. */
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| 191 | virtual void sltHandleNotifyUpdate(int iX, int iY, int iWidth, int iHeight);
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| 192 |
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| 193 | /** Handles SetVisibleRegion event received from frame-buffer.
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| 194 | * @todo To make it right, this have to be protected, but
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| 195 | * connection should be moved from frame-buffer to this class. */
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| 196 | virtual void sltHandleSetVisibleRegion(QRegion region);
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| 197 |
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| 198 | protected slots:
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| 199 |
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| 200 | /* Performs guest-screen resize to a size specified.
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| 201 | * @param toSize Brings the size guest-screen needs to be resized to.
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| 202 | * @note If toSize isn't valid or sane one, it will be replaced with actual
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| 203 | * size of centralWidget() containing this machine-view currently.
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| 204 | * @note Also, take into acount that since this method is also called to
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| 205 | * resize to centralWidget() size, the size passed is expected to be
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| 206 | * tranformed to internal coordinate system and thus to be restored to
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| 207 | * guest coordinate system (absolute one) before passing to guest. */
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| 208 | void sltPerformGuestResize(const QSize &toSize = QSize());
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| 209 |
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| 210 | /** Handles guest-screen toggle request.
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| 211 | * @param iScreen Brings the number of screen being referred.
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| 212 | * @param fEnabled Brings whether this screen should be enabled. */
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| 213 | void sltHandleActionTriggerViewScreenToggle(int iScreen, bool fEnabled);
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| 214 | /** Handles guest-screen resize request.
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| 215 | * @param iScreen Brings the number of screen being referred.
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| 216 | * @param size Brings the size of screen to be applied. */
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| 217 | void sltHandleActionTriggerViewScreenResize(int iScreen, const QSize &size);
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| 218 |
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| 219 | /* Watch dog for desktop resizes: */
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| 220 | void sltDesktopResized();
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| 221 |
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| 222 | /** Handles the scale-factor change. */
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| 223 | void sltHandleScaleFactorChange(const QUuid &uMachineID);
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| 224 |
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| 225 | /** Handles the scaling-optimization change. */
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| 226 | void sltHandleScalingOptimizationChange(const QUuid &uMachineID);
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| 227 |
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| 228 | /* Console callback handlers: */
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| 229 | virtual void sltMachineStateChanged();
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| 230 | /** Handles guest request to change the mouse pointer shape. */
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| 231 | void sltMousePointerShapeChange();
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| 232 |
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| 233 | /** Detaches COM. */
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| 234 | void sltDetachCOM();
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| 235 |
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| 236 | /** Handles translation event. */
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| 237 | void sltRetranslateUI();
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| 238 |
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| 239 | protected:
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| 240 |
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| 241 | /* Machine-view constructor: */
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| 242 | UIMachineView(UIMachineWindow *pMachineWindow, ulong uScreenId);
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| 243 | /* Machine-view destructor: */
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| 244 | virtual ~UIMachineView() {}
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| 245 |
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| 246 | /* Prepare routines: */
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| 247 | virtual void loadMachineViewSettings();
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| 248 | //virtual void prepareNativeFilters() {}
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| 249 | virtual void prepareViewport();
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| 250 | virtual void prepareFrameBuffer();
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| 251 | virtual void prepareCommon();
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| 252 | #ifdef VBOX_WITH_DRAG_AND_DROP
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| 253 | virtual int prepareDnd();
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| 254 | #endif
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| 255 | virtual void prepareFilters();
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| 256 | virtual void prepareConnections();
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| 257 | virtual void prepareConsoleConnections();
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| 258 |
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| 259 | /* Cleanup routines: */
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| 260 | //virtual void cleanupConsoleConnections() {}
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| 261 | //virtual void cleanupConnections() {}
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| 262 | //virtual void cleanupFilters() {}
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| 263 | #ifdef VBOX_WITH_DRAG_AND_DROP
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| 264 | virtual void cleanupDnd();
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| 265 | #endif
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| 266 | //virtual void cleanupCommon() {}
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| 267 | virtual void cleanupFrameBuffer();
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| 268 | //virtual void cleanupViewport();
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| 269 | virtual void cleanupNativeFilters();
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| 270 | //virtual void saveMachineViewSettings() {}
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| 271 |
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| 272 | /* Protected getters: */
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| 273 | UIActionPool* actionPool() const;
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| 274 | QSize sizeHint() const RT_OVERRIDE;
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| 275 |
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| 276 | /** Retrieves the last guest-screen size-hint from extra-data. */
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| 277 | QSize storedGuestScreenSizeHint() const;
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| 278 | /** Stores a guest-screen @a sizeHint to extra-data. */
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| 279 | void setStoredGuestScreenSizeHint(const QSize &sizeHint);
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| 280 |
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| 281 | /** Retrieves the sent guest-screen size-hint from display or frame-buffer. */
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| 282 | QSize requestedGuestScreenSizeHint() const;
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| 283 |
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| 284 | /** Retrieves the last guest-screen visibility status from extra-data. */
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| 285 | bool guestScreenVisibilityStatus() const;
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| 286 |
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| 287 | /** Handles machine-view scale changes. */
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| 288 | void handleScaleChange();
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| 289 |
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| 290 | /** Returns the pause-pixmap: */
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| 291 | const QPixmap& pausePixmap() const { return m_pausePixmap; }
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| 292 | /** Returns the scaled pause-pixmap: */
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| 293 | const QPixmap& pausePixmapScaled() const { return m_pausePixmapScaled; }
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| 294 | /** Resets the pause-pixmap. */
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| 295 | void resetPausePixmap();
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| 296 | /** Acquires live pause-pixmap. */
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| 297 | void takePausePixmapLive();
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| 298 | /** Acquires snapshot pause-pixmap. */
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| 299 | void takePausePixmapSnapshot();
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| 300 | /** Updates the scaled pause-pixmap. */
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| 301 | void updateScaledPausePixmap();
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| 302 |
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| 303 | /** The available area on the current screen for application windows. */
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| 304 | virtual QRect workingArea() const = 0;
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| 305 | /** Calculate how big the guest desktop can be while still fitting on one
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| 306 | * host screen. */
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| 307 | virtual QSize calculateMaxGuestSize() const = 0;
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| 308 | virtual void updateSliders();
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| 309 | static void dimImage(QImage &img);
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| 310 | void scrollContentsBy(int dx, int dy) RT_OVERRIDE RT_FINAL;
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| 311 | #ifdef VBOX_WS_MAC
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| 312 | void updateDockIcon();
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| 313 | CGImageRef frameBuffertoCGImageRef(UIFrameBuffer *pFrameBuffer);
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| 314 | #endif /* VBOX_WS_MAC */
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| 315 | /** Is this a fullscreen-type view? */
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| 316 | bool isFullscreenOrSeamless() const;
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| 317 |
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| 318 | /* Cross-platforms event processors: */
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| 319 | bool eventFilter(QObject *pWatched, QEvent *pEvent) RT_OVERRIDE;
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| 320 | void resizeEvent(QResizeEvent *pEvent) RT_OVERRIDE RT_FINAL;
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| 321 | void moveEvent(QMoveEvent *pEvent) RT_OVERRIDE RT_FINAL;
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| 322 | void paintEvent(QPaintEvent *pEvent) RT_OVERRIDE RT_FINAL;
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| 323 |
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| 324 | /** Handles focus-in @a pEvent. */
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| 325 | void focusInEvent(QFocusEvent *pEvent) RT_OVERRIDE RT_FINAL;
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| 326 | /** Handles focus-out @a pEvent. */
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| 327 | void focusOutEvent(QFocusEvent *pEvent) RT_OVERRIDE RT_FINAL;
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| 328 | #ifdef VBOX_WS_NIX
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| 329 | virtual void keyPressEvent(QKeyEvent *pEvent) RT_OVERRIDE RT_FINAL;
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| 330 | virtual void keyReleaseEvent(QKeyEvent *pEvent) RT_OVERRIDE RT_FINAL;
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| 331 | #endif
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| 332 |
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| 333 | #ifdef VBOX_WITH_DRAG_AND_DROP
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| 334 | /**
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| 335 | * Returns @true if the VM window can accept (start is, start) a drag and drop
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| 336 | * operation, @false if not.
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| 337 | */
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| 338 | bool dragAndDropCanAccept() const;
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| 339 |
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| 340 | /**
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| 341 | * Returns @true if drag and drop for this machine is active
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| 342 | * (that is, host->guest, guest->host or bidirectional), @false if not.
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| 343 | */
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| 344 | bool dragAndDropIsActive() const;
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| 345 |
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| 346 | /**
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| 347 | * Host -> Guest: Issued when the host cursor enters the guest (VM) window.
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| 348 | * The guest will receive the relative cursor coordinates of the
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| 349 | * appropriate screen ID.
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| 350 | *
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| 351 | * @param pEvent Related enter event.
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| 352 | */
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| 353 | void dragEnterEvent(QDragEnterEvent *pEvent) RT_OVERRIDE RT_FINAL;
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| 354 |
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| 355 | /**
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| 356 | * Host -> Guest: Issued when the host cursor moves inside (over) the guest (VM) window.
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| 357 | * The guest will receive the relative cursor coordinates of the
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| 358 | * appropriate screen ID.
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| 359 | *
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| 360 | * @param pEvent Related move event.
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| 361 | */
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| 362 | void dragLeaveEvent(QDragLeaveEvent *pEvent) RT_OVERRIDE RT_FINAL;
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| 363 |
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| 364 | /**
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| 365 | * Host -> Guest: Issued when the host cursor leaves the guest (VM) window again.
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| 366 | * This will ask the guest to stop any further drag'n drop operation.
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| 367 | *
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| 368 | * @param pEvent Related leave event.
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| 369 | */
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| 370 | void dragMoveEvent(QDragMoveEvent *pEvent) RT_OVERRIDE RT_FINAL;
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| 371 |
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| 372 | /**
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| 373 | * Host -> Guest: Issued when the host drops data into the guest (VM) window.
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| 374 | *
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| 375 | * @param pEvent Related drop event.
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| 376 | */
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| 377 | void dropEvent(QDropEvent *pEvent) RT_OVERRIDE RT_FINAL;
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| 378 | #endif /* VBOX_WITH_DRAG_AND_DROP */
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| 379 |
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| 380 | /** Scales passed size forward. */
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| 381 | QSize scaledForward(QSize size) const;
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| 382 | /** Scales passed size backward. */
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| 383 | QSize scaledBackward(QSize size) const;
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| 384 |
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| 385 | /** Updates mouse pointer @a pixmap, @a uXHot and @a uYHot according to scaling attributes. */
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| 386 | void updateMousePointerPixmapScaling(QPixmap &pixmap, uint &uXHot, uint &uYHot);
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| 387 |
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| 388 | /* Protected members: */
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| 389 | UIMachineWindow *m_pMachineWindow;
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| 390 | ulong m_uScreenId;
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| 391 | KMachineState m_previousState;
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| 392 | /** HACK: when switching out of fullscreen or seamless we wish to override
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| 393 | * the default size hint to avoid short resizes back to fullscreen size.
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| 394 | * Not explicitly initialised (i.e. invalid by default). */
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| 395 | QSize m_sizeHintOverride;
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| 396 |
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| 397 | /** Last size hint sent as a part of guest auto-resize feature.
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| 398 | * @note Useful to avoid spamming CDisplay with same hint before
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| 399 | * frame-buffer finally resized to requested size. */
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| 400 | QSize m_lastSizeHint;
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| 401 |
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| 402 | /** Holds current host-screen number. */
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| 403 | int m_iHostScreenNumber;
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| 404 |
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| 405 | /** Holds the maximum guest screen size policy. */
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| 406 | MaximumGuestScreenSizePolicy m_enmMaximumGuestScreenSizePolicy;
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| 407 | /** The maximum guest size for fixed size policy. */
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| 408 | QSize m_fixedMaxGuestSize;
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| 409 | /** Maximum guest resolution which we wish to handle. Must be accessed
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| 410 | * atomically.
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| 411 | * @note The background for this variable is that we need this value to be
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| 412 | * available to the EMT thread, but it can only be calculated by the
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| 413 | * GUI, and GUI code can only safely be called on the GUI thread due to
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| 414 | * (at least) X11 threading issues. So we calculate the value in advance,
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| 415 | * monitor things in case it changes and update it atomically when it does.
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| 416 | */
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| 417 | /** @todo This should be private. */
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| 418 | volatile uint64_t m_u64MaximumGuestSize;
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| 419 |
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| 420 | /** Holds the pause-pixmap. */
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| 421 | QPixmap m_pausePixmap;
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| 422 | /** Holds the scaled pause-pixmap. */
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| 423 | QPixmap m_pausePixmapScaled;
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| 424 |
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| 425 | /** Holds cached mouse cursor. */
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| 426 | QCursor m_cursor;
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| 427 |
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| 428 | #ifdef VBOX_WITH_DRAG_AND_DROP
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| 429 | /** Pointer to drag and drop handler instance. */
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| 430 | UIDnDHandler *m_pDnDHandler;
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| 431 | # ifdef VBOX_WITH_DRAG_AND_DROP_GH
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| 432 | /** Flag indicating whether a guest->host drag currently is in
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| 433 | * progress or not. */
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| 434 | bool m_fIsDraggingFromGuest;
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| 435 | # endif
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| 436 | #endif
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| 437 |
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| 438 | /** Holds the native event filter instance. */
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| 439 | UINativeEventFilter *m_pNativeEventFilter;
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| 440 | };
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| 441 |
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| 442 | /* This maintenance class is a part of future roll-back mechanism.
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| 443 | * It allows to block main GUI thread until specific event received.
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| 444 | * Later it will become more abstract but now its just used to help
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| 445 | * fullscreen & seamless modes to restore normal guest size hint. */
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| 446 | /** @todo This class is now unused - can it be removed altogether? */
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| 447 | class UIMachineViewBlocker : public QEventLoop
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| 448 | {
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| 449 | Q_OBJECT;
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| 450 |
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| 451 | public:
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| 452 |
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| 453 | UIMachineViewBlocker()
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| 454 | : QEventLoop(0)
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| 455 | , m_iTimerId(0)
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| 456 | {
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| 457 | /* Also start timer to unlock pool in case of
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| 458 | * required condition doesn't happens by some reason: */
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| 459 | m_iTimerId = startTimer(3000);
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| 460 | }
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| 461 |
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| 462 | virtual ~UIMachineViewBlocker()
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| 463 | {
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| 464 | /* Kill the timer: */
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| 465 | killTimer(m_iTimerId);
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| 466 | }
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| 467 |
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| 468 | protected:
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| 469 |
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| 470 | void timerEvent(QTimerEvent *pEvent) RT_OVERRIDE RT_FINAL
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| 471 | {
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|---|
| 472 | /* If that timer event occurs => it seems
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| 473 | * guest resize event doesn't comes in time,
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| 474 | * shame on it, but we just unlocking 'this': */
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| 475 | QEventLoop::timerEvent(pEvent);
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| 476 | exit();
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| 477 | }
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| 478 |
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| 479 | int m_iTimerId;
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| 480 | };
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| 481 |
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| 482 | #endif /* !FEQT_INCLUDED_SRC_runtime_UIMachineView_h */
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