1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the Qt Designer of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:GPL-EXCEPT$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT 21 ** included in the packaging of this file. Please review the following 22 ** information to ensure the GNU General Public License requirements will 23 ** be met: https://www.gnu.org/licenses/gpl-3.0.html. 24 ** 25 ** $QT_END_LICENSE$ 26 ** 27 ****************************************************************************/ 28 29 #ifndef WIDGETSELECTION_H 30 #define WIDGETSELECTION_H 31 32 #include "formeditor_global.h" 33 #include <invisible_widget_p.h> 34 35 #include <QtCore/qhash.h> 36 #include <QtCore/qpointer.h> 37 38 QT_BEGIN_NAMESPACE 39 40 class QDesignerFormEditorInterface; 41 class QMouseEvent; 42 class QPaintEvent; 43 44 namespace qdesigner_internal { 45 46 class FormWindow; 47 class WidgetSelection; 48 49 class QT_FORMEDITOR_EXPORT WidgetHandle: public InvisibleWidget 50 { 51 Q_OBJECT 52 public: 53 enum Type 54 { 55 LeftTop, 56 Top, 57 RightTop, 58 Right, 59 RightBottom, 60 Bottom, 61 LeftBottom, 62 Left, 63 64 TypeCount 65 }; 66 67 WidgetHandle(FormWindow *parent, Type t, WidgetSelection *s); 68 void setWidget(QWidget *w); 69 void setActive(bool a); 70 void updateCursor(); 71 setEnabled(bool)72 void setEnabled(bool) {} 73 74 QDesignerFormEditorInterface *core() const; 75 76 protected: 77 void paintEvent(QPaintEvent *e) override; 78 void mousePressEvent(QMouseEvent *e) override; 79 void mouseMoveEvent(QMouseEvent *e) override; 80 void mouseReleaseEvent(QMouseEvent *e) override; 81 82 private: 83 void changeGridLayoutItemSpan(); 84 void changeFormLayoutItemSpan(); 85 void trySetGeometry(QWidget *w, int x, int y, int width, int height); 86 void tryResize(QWidget *w, int width, int height); 87 88 private: 89 QWidget *m_widget; 90 const Type m_type; 91 QPoint m_origPressPos; 92 FormWindow *m_formWindow; 93 WidgetSelection *m_sel; 94 QRect m_geom, m_origGeom; 95 bool m_active; 96 }; 97 98 class QT_FORMEDITOR_EXPORT WidgetSelection: public QObject 99 { 100 Q_OBJECT 101 public: 102 WidgetSelection(FormWindow *parent); 103 104 void setWidget(QWidget *w); 105 bool isUsed() const; 106 107 void updateActive(); 108 void updateGeometry(); 109 void hide(); 110 void show(); 111 void update(); 112 113 QWidget *widget() const; 114 115 QDesignerFormEditorInterface *core() const; 116 117 bool eventFilter(QObject *object, QEvent *event) override; 118 119 enum WidgetState { UnlaidOut, LaidOut, ManagedGridLayout, ManagedFormLayout }; 120 static WidgetState widgetState(const QDesignerFormEditorInterface *core, QWidget *w); 121 122 private: 123 WidgetHandle *m_handles[WidgetHandle::TypeCount]; 124 QPointer<QWidget> m_widget; 125 FormWindow *m_formWindow; 126 }; 127 128 } // namespace qdesigner_internal 129 130 QT_END_NAMESPACE 131 132 #endif // WIDGETSELECTION_H 133