| 1 | /* $Id: UIChooserHandlerMouse.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBox Qt GUI - UIChooserHandlerMouse class implementation.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2012-2023 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 | /* Qt includes: */
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| 29 | #include <QGraphicsSceneMouseEvent>
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| 30 |
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| 31 | /* GUI incluedes: */
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| 32 | #include "UIChooserHandlerMouse.h"
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| 33 | #include "UIChooserModel.h"
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| 34 | #include "UIChooserItemGroup.h"
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| 35 | #include "UIChooserItemGlobal.h"
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| 36 | #include "UIChooserItemMachine.h"
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| 37 |
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| 38 |
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| 39 | UIChooserHandlerMouse::UIChooserHandlerMouse(UIChooserModel *pParent)
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| 40 | : QObject(pParent)
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| 41 | , m_pModel(pParent)
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| 42 | {
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| 43 | }
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| 44 |
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| 45 | bool UIChooserHandlerMouse::handle(QGraphicsSceneMouseEvent *pEvent, UIMouseEventType type) const
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| 46 | {
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| 47 | /* Process passed event: */
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| 48 | switch (type)
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| 49 | {
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| 50 | case UIMouseEventType_Press: return handleMousePress(pEvent);
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| 51 | case UIMouseEventType_Release: return handleMouseRelease(pEvent);
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| 52 | case UIMouseEventType_DoubleClick: return handleMouseDoubleClick(pEvent);
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| 53 | }
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| 54 | /* Pass event if unknown: */
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| 55 | return false;
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| 56 | }
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| 57 |
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| 58 | UIChooserModel* UIChooserHandlerMouse::model() const
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| 59 | {
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| 60 | return m_pModel;
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| 61 | }
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| 62 |
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| 63 | bool UIChooserHandlerMouse::handleMousePress(QGraphicsSceneMouseEvent *pEvent) const
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| 64 | {
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| 65 | /* Get item under mouse cursor: */
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| 66 | QPointF scenePos = pEvent->scenePos();
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| 67 | if (QGraphicsItem *pItemUnderMouse = model()->itemAt(scenePos))
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| 68 | {
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| 69 | /* Which button it was? */
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| 70 | switch (pEvent->button())
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| 71 | {
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| 72 | /* Left one? */
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| 73 | case Qt::LeftButton:
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| 74 | {
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| 75 | /* Which item we just clicked? */
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| 76 | UIChooserItem *pClickedItem = 0;
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| 77 | /* Was that a group item? */
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| 78 | if (UIChooserItemGroup *pGroupItem = qgraphicsitem_cast<UIChooserItemGroup*>(pItemUnderMouse))
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| 79 | pClickedItem = pGroupItem;
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| 80 | /* Or a global one? */
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| 81 | else if (UIChooserItemGlobal *pGlobalItem = qgraphicsitem_cast<UIChooserItemGlobal*>(pItemUnderMouse))
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| 82 | {
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| 83 | const QPoint itemCursorPos = pGlobalItem->mapFromScene(scenePos).toPoint();
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| 84 | if ( pGlobalItem->isToolButtonArea(itemCursorPos)
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| 85 | && ( model()->firstSelectedItem() == pGlobalItem
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| 86 | || pGlobalItem->isHovered()))
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| 87 | {
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| 88 | model()->handleToolButtonClick(pGlobalItem);
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| 89 | if (model()->firstSelectedItem() != pGlobalItem)
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| 90 | pClickedItem = pGlobalItem;
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| 91 | }
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| 92 | else
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| 93 | if ( pGlobalItem->isPinButtonArea(itemCursorPos)
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| 94 | && ( model()->firstSelectedItem() == pGlobalItem
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| 95 | || pGlobalItem->isHovered()))
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| 96 | model()->handlePinButtonClick(pGlobalItem);
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| 97 | else
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| 98 | pClickedItem = pGlobalItem;
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| 99 | }
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| 100 | /* Or a machine one? */
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| 101 | else if (UIChooserItemMachine *pMachineItem = qgraphicsitem_cast<UIChooserItemMachine*>(pItemUnderMouse))
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| 102 | {
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| 103 | const QPoint itemCursorPos = pMachineItem->mapFromScene(scenePos).toPoint();
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| 104 | if ( pMachineItem->isToolButtonArea(itemCursorPos)
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| 105 | && ( model()->firstSelectedItem() == pMachineItem
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| 106 | || pMachineItem->isHovered()))
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| 107 | {
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| 108 | model()->handleToolButtonClick(pMachineItem);
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| 109 | if (model()->firstSelectedItem() != pMachineItem)
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| 110 | pClickedItem = pMachineItem;
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| 111 | }
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| 112 | else
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| 113 | pClickedItem = pMachineItem;
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| 114 | }
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| 115 | /* If we had clicked one of required item types: */
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| 116 | if (pClickedItem && !pClickedItem->isRoot())
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| 117 | {
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| 118 | /* Was 'shift' modifier pressed? */
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| 119 | if (pEvent->modifiers() == Qt::ShiftModifier)
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| 120 | {
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| 121 | /* Calculate positions: */
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| 122 | UIChooserItem *pFirstItem = model()->firstSelectedItem();
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| 123 | AssertPtrReturn(pFirstItem, false); // is failure possible?
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| 124 | const int iFirstPosition = model()->navigationItems().indexOf(pFirstItem);
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| 125 | const int iClickedPosition = model()->navigationItems().indexOf(pClickedItem);
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| 126 | /* Populate list of items from 'first' to 'clicked': */
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| 127 | QList<UIChooserItem*> items;
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| 128 | if (iFirstPosition <= iClickedPosition)
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| 129 | for (int i = iFirstPosition; i <= iClickedPosition; ++i)
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| 130 | items << model()->navigationItems().at(i);
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| 131 | else
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| 132 | for (int i = iFirstPosition; i >= iClickedPosition; --i)
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| 133 | items << model()->navigationItems().at(i);
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| 134 | /* Wipe out items of inconsistent types: */
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| 135 | QList<UIChooserItem*> filteredItems;
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| 136 | foreach (UIChooserItem *pIteratedItem, items)
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| 137 | {
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| 138 | /* So, the logic is to add intermediate item if
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| 139 | * - first and intermediate selected items are global or
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| 140 | * - first and intermediate selected items are NOT global. */
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| 141 | if ( ( pFirstItem->type() == UIChooserNodeType_Global
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| 142 | && pIteratedItem->type() == UIChooserNodeType_Global)
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| 143 | || ( pFirstItem->type() != UIChooserNodeType_Global
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| 144 | && pIteratedItem->type() != UIChooserNodeType_Global))
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| 145 | filteredItems << pIteratedItem;
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| 146 | }
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| 147 | /* Make that list selected: */
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| 148 | model()->setSelectedItems(filteredItems);
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| 149 | /* Make item closest to clicked the current one: */
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| 150 | if (!filteredItems.isEmpty())
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| 151 | model()->setCurrentItem(filteredItems.last());
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| 152 | }
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| 153 | /* Was 'control' modifier pressed? */
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| 154 | else if (pEvent->modifiers() == Qt::ControlModifier)
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| 155 | {
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| 156 | /* Invert selection state for clicked item: */
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| 157 | if (model()->selectedItems().contains(pClickedItem))
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| 158 | model()->removeFromSelectedItems(pClickedItem);
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| 159 | else
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| 160 | {
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| 161 | /* So, the logic is to add newly clicked item if
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| 162 | * - previously and newly selected items are global or
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| 163 | * - previously and newly selected items are NOT global. */
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| 164 | UIChooserItem *pFirstItem = model()->firstSelectedItem();
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| 165 | AssertPtrReturn(pFirstItem, false); // is failure possible?
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| 166 | if ( ( pFirstItem->type() == UIChooserNodeType_Global
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| 167 | && pClickedItem->type() == UIChooserNodeType_Global)
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| 168 | || ( pFirstItem->type() != UIChooserNodeType_Global
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| 169 | && pClickedItem->type() != UIChooserNodeType_Global))
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| 170 | model()->addToSelectedItems(pClickedItem);
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| 171 | }
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| 172 | /* Make clicked item current one: */
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| 173 | model()->setCurrentItem(pClickedItem);
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| 174 | }
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| 175 | /* Was no modifiers pressed? */
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| 176 | else if (pEvent->modifiers() == Qt::NoModifier)
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| 177 | {
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| 178 | /* Make clicked item the only selected one: */
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| 179 | model()->setSelectedItem(pClickedItem);
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| 180 | }
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| 181 | }
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| 182 | break;
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| 183 | }
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| 184 | /* Right one? */
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| 185 | case Qt::RightButton:
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| 186 | {
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| 187 | /* Which item we just clicked? */
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| 188 | UIChooserItem *pClickedItem = 0;
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| 189 | /* Was that a group item? */
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| 190 | if (UIChooserItemGroup *pGroupItem = qgraphicsitem_cast<UIChooserItemGroup*>(pItemUnderMouse))
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| 191 | pClickedItem = pGroupItem;
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| 192 | /* Or a global one? */
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| 193 | else if (UIChooserItemGlobal *pGlobalItem = qgraphicsitem_cast<UIChooserItemGlobal*>(pItemUnderMouse))
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| 194 | pClickedItem = pGlobalItem;
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| 195 | /* Or a machine one? */
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| 196 | else if (UIChooserItemMachine *pMachineItem = qgraphicsitem_cast<UIChooserItemMachine*>(pItemUnderMouse))
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| 197 | pClickedItem = pMachineItem;
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| 198 | /* If we had clicked one of required item types: */
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| 199 | if (pClickedItem && !pClickedItem->isRoot())
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| 200 | {
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| 201 | /* Select clicked item if not selected yet: */
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| 202 | if (!model()->selectedItems().contains(pClickedItem))
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| 203 | model()->setSelectedItem(pClickedItem);
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| 204 | }
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| 205 | break;
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| 206 | }
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| 207 | default:
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| 208 | break;
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| 209 | }
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| 210 | }
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| 211 | /* Pass all other events: */
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| 212 | return false;
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| 213 | }
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| 214 |
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| 215 | bool UIChooserHandlerMouse::handleMouseRelease(QGraphicsSceneMouseEvent*) const
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| 216 | {
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| 217 | /* Pass all events: */
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| 218 | return false;
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| 219 | }
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| 220 |
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| 221 | bool UIChooserHandlerMouse::handleMouseDoubleClick(QGraphicsSceneMouseEvent *pEvent) const
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| 222 | {
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| 223 | /* Get item under mouse cursor: */
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| 224 | QPointF scenePos = pEvent->scenePos();
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| 225 | if (QGraphicsItem *pItemUnderMouse = model()->itemAt(scenePos))
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| 226 | {
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| 227 | /* Which button it was? */
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| 228 | switch (pEvent->button())
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| 229 | {
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| 230 | /* Left one? */
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| 231 | case Qt::LeftButton:
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| 232 | {
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| 233 | /* Was that a group item? */
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| 234 | if (UIChooserItemGroup *pGroupItem = qgraphicsitem_cast<UIChooserItemGroup*>(pItemUnderMouse))
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| 235 | {
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| 236 | /* If it was not root: */
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| 237 | if (!pGroupItem->isRoot())
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| 238 | {
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| 239 | /* Toggle it: */
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| 240 | if (pGroupItem->isClosed())
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| 241 | pGroupItem->open();
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| 242 | else if (pGroupItem->isOpened())
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| 243 | pGroupItem->close();
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| 244 | }
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| 245 | /* Filter that event out: */
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| 246 | return true;
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| 247 | }
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| 248 | /* Or a machine one? */
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| 249 | else if (pItemUnderMouse->type() == UIChooserNodeType_Machine)
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| 250 | {
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| 251 | /* Start or show selected items: */
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| 252 | model()->startOrShowSelectedItems();
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| 253 | }
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| 254 | break;
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| 255 | }
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| 256 | default:
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| 257 | break;
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| 258 | }
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| 259 | }
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| 260 | /* Pass all other events: */
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| 261 | return false;
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| 262 | }
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| 263 |
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