1 | /* $Id: UITabBar.h 76553 2019-01-01 01:45:53Z vboxsync $ */
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2 | /** @file
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3 | * VBox Qt GUI - UITabBar class declaration.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2017-2019 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | */
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17 |
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18 | #ifndef ___UITabBar_h___
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19 | #define ___UITabBar_h___
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20 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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21 | # pragma once
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22 | #endif
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23 |
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24 | /* Qt includes: */
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25 | #include <QIcon>
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26 | #include <QString>
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27 | #include <QUuid>
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28 | #include <QWidget>
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29 |
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30 | /* Forward declarations: */
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31 | class QAction;
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32 | class QDragEnterEvent;
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33 | class QDragLeaveEvent;
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34 | class QDragMoveEvent;
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35 | class QDropEvent;
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36 | class QHBoxLayout;
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37 | class QIcon;
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38 | class QPaintEvent;
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39 | class QString;
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40 | class QUuid;
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41 | class QWidget;
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42 | class UITabBarItem;
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43 |
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44 |
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45 | /** Our own skinnable implementation of tab-bar.
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46 | * The idea is to make tab-bar analog which looks more interesting
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47 | * on various platforms, allows for various skins, and tiny adjustments. */
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48 | class UITabBar : public QWidget
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49 | {
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50 | Q_OBJECT;
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51 |
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52 | signals:
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53 |
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54 | /** Notifies about tab with @a uuid requested closing. */
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55 | void sigTabRequestForClosing(const QUuid &uuid);
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56 | /** Notifies about tab with @a uuid set to current. */
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57 | void sigCurrentTabChanged(const QUuid &uuid);
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58 |
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59 | public:
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60 |
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61 | /** Alignment types. */
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62 | enum Alignment { Align_Left, Align_Right };
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63 |
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64 | /** Constructs tab-bar passing @a pParent to the base-class. */
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65 | UITabBar(Alignment enmAlignment, QWidget *pParent = 0);
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66 |
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67 | /** Adds new tab for passed @a pAction. @returns unique tab ID. */
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68 | QUuid addTab(const QAction *pAction);
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69 |
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70 | /** Removes tab with passed @a uuid. */
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71 | bool removeTab(const QUuid &uuid);
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72 |
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73 | /** Makes tab with passed @a uuid current. */
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74 | bool setCurrent(const QUuid &uuid);
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75 |
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76 | /** Return tab-bar order ID list. */
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77 | QList<QUuid> tabOrder() const;
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78 |
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79 | protected:
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80 |
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81 | /** Handles paint @a pEvent. */
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82 | virtual void paintEvent(QPaintEvent *pEvent) /* override */;
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83 |
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84 | /** Handles drag-enter @a pEvent. */
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85 | virtual void dragEnterEvent(QDragEnterEvent *pEvent) /* override */;
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86 | /** Handles drag-move @a pEvent. */
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87 | virtual void dragMoveEvent(QDragMoveEvent *pEvent) /* override */;
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88 | /** Handles drag-leave @a pEvent. */
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89 | virtual void dragLeaveEvent(QDragLeaveEvent *pEvent) /* override */;
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90 | /** Handles drop @a pEvent. */
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91 | virtual void dropEvent(QDropEvent *pEvent) /* override */;
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92 |
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93 | private slots:
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94 |
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95 | /** Handles request to make @a pItem current. */
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96 | void sltHandleMakeChildCurrent(UITabBarItem *pItem);
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97 |
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98 | /** Handles request to close @a pItem. */
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99 | void sltHandleChildClose(UITabBarItem *pItem);
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100 |
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101 | /** Handles drag object destruction. */
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102 | void sltHandleDragObjectDestroy();
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103 |
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104 | private:
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105 |
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106 | /** Prepares all. */
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107 | void prepare();
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108 |
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109 | /** Updates children styles. */
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110 | void updateChildrenStyles();
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111 |
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112 | /** @name Contents: Common
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113 | * @{ */
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114 | /** Holds the alignment. */
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115 | Alignment m_enmAlignment;
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116 | /** @} */
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117 |
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118 | /** @name Contents: Widgets
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119 | * @{ */
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120 | /** Holds the main layout instance. */
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121 | QHBoxLayout *m_pLayoutMain;
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122 | /** Holds the tab layout instance. */
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123 | QHBoxLayout *m_pLayoutTab;
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124 |
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125 | /** Holds the current item reference. */
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126 | UITabBarItem *m_pCurrentItem;
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127 |
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128 | /** Holds the array of items instances. */
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129 | QList<UITabBarItem*> m_aItems;
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130 | /** @} */
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131 |
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132 | /** @name Contents: Order
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133 | * @{ */
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134 | /** Holds the token-item to drop dragged-item nearby. */
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135 | UITabBarItem *m_pItemToken;
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136 |
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137 | /** Holds whether the dragged-item should be dropped <b>after</b> the token-item. */
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138 | bool m_fDropAfterTokenItem;
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139 | /** @} */
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140 | };
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141 |
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142 | #endif /* !___UITabBar_h___ */
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143 |
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