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27 | ****************************************************************************/ |
28 | |
29 | #include "default_actionprovider.h" |
30 | #include "invisible_widget_p.h" |
31 | #include "qdesigner_toolbar_p.h" |
32 | |
33 | #include <QtWidgets/qaction.h> |
34 | #include <QtWidgets/qapplication.h> |
35 | #include <QtCore/qrect.h> |
36 | #include <QtCore/qdebug.h> |
37 | |
38 | QT_BEGIN_NAMESPACE |
39 | |
40 | namespace qdesigner_internal { |
41 | |
42 | // ------------ ActionProviderBase: |
43 | // Draws the drag indicator when dragging an action over a widget |
44 | // that receives action Dnd, such as ToolBar, Menu or MenuBar. |
45 | ActionProviderBase::ActionProviderBase(QWidget *widget) : |
46 | m_indicator(new InvisibleWidget(widget)) |
47 | { |
48 | Q_ASSERT(widget != nullptr); |
49 | |
50 | m_indicator->setAutoFillBackground(true); |
51 | m_indicator->setBackgroundRole(QPalette::Window); |
52 | |
53 | QPalette p; |
54 | p.setColor(acr: m_indicator->backgroundRole(), acolor: Qt::red); |
55 | m_indicator->setPalette(p); |
56 | m_indicator->hide(); |
57 | } |
58 | |
59 | enum { indicatorSize = 2 }; |
60 | |
61 | // Position an indicator horizontally over the rectangle, indicating |
62 | // 'Insert before' (left or right according to layout direction) |
63 | static inline QRect horizontalIndicatorRect(const QRect &rect, Qt::LayoutDirection layoutDirection) |
64 | { |
65 | // Position right? |
66 | QRect rc = QRect(rect.x(), 0, indicatorSize, rect.height() - 1); |
67 | if (layoutDirection == Qt::RightToLeft) |
68 | rc.moveLeft(pos: rc.x() + rect.width() - indicatorSize); |
69 | return rc; |
70 | } |
71 | |
72 | // Position an indicator vertically over the rectangle, indicating 'Insert before' (top) |
73 | static inline QRect verticalIndicatorRect(const QRect &rect) |
74 | { |
75 | return QRect(0, rect.top(), rect.width() - 1, indicatorSize); |
76 | } |
77 | |
78 | // Determine the geometry of the indicator by retrieving |
79 | // the action under mouse and positioning the bar within its geometry. |
80 | QRect ActionProviderBase::indicatorGeometry(const QPoint &pos, Qt::LayoutDirection layoutDirection) const |
81 | { |
82 | QAction *action = actionAt(pos); |
83 | if (!action) |
84 | return QRect(); |
85 | QRect rc = actionGeometry(action); |
86 | return orientation() == Qt::Horizontal ? horizontalIndicatorRect(rect: rc, layoutDirection) : verticalIndicatorRect(rect: rc); |
87 | } |
88 | |
89 | // Adjust the indicator while dragging. (-1,1) is called to finish a DND operation |
90 | void ActionProviderBase::adjustIndicator(const QPoint &pos) |
91 | { |
92 | if (pos == QPoint(-1, -1)) { |
93 | m_indicator->hide(); |
94 | return; |
95 | } |
96 | const QRect ig = indicatorGeometry(pos, layoutDirection: m_indicator->layoutDirection()); |
97 | if (ig.isValid()) { |
98 | m_indicator->setGeometry(ig); |
99 | QPalette p = m_indicator->palette(); |
100 | if (p.color(cr: m_indicator->backgroundRole()) != Qt::red) { |
101 | p.setColor(acr: m_indicator->backgroundRole(), acolor: Qt::red); |
102 | m_indicator->setPalette(p); |
103 | } |
104 | m_indicator->show(); |
105 | m_indicator->raise(); |
106 | } else { |
107 | m_indicator->hide(); |
108 | } |
109 | } |
110 | |
111 | // ------------- QToolBarActionProvider |
112 | QToolBarActionProvider::QToolBarActionProvider(QToolBar *widget, QObject *parent) : |
113 | QObject(parent), |
114 | ActionProviderBase(widget), |
115 | m_widget(widget) |
116 | { |
117 | } |
118 | |
119 | QRect QToolBarActionProvider::actionGeometry(QAction *action) const |
120 | { |
121 | return m_widget->actionGeometry(action); |
122 | } |
123 | |
124 | QAction *QToolBarActionProvider::actionAt(const QPoint &pos) const |
125 | { |
126 | return ToolBarEventFilter::actionAt(tb: m_widget, pos); |
127 | } |
128 | |
129 | Qt::Orientation QToolBarActionProvider::orientation() const |
130 | { |
131 | return m_widget->orientation(); |
132 | } |
133 | |
134 | QRect QToolBarActionProvider::indicatorGeometry(const QPoint &pos, Qt::LayoutDirection layoutDirection) const |
135 | { |
136 | const QRect actionRect = ActionProviderBase::indicatorGeometry(pos, layoutDirection); |
137 | if (actionRect.isValid()) |
138 | return actionRect; |
139 | // Toolbar differs in that is has no dummy placeholder to 'insert before' |
140 | // when intending to append. Check the free area. |
141 | const QRect freeArea = ToolBarEventFilter::freeArea(tb: m_widget); |
142 | if (!freeArea.contains(p: pos)) |
143 | return QRect(); |
144 | return orientation() == Qt::Horizontal ? horizontalIndicatorRect(rect: freeArea, layoutDirection) : verticalIndicatorRect(rect: freeArea); |
145 | } |
146 | |
147 | // ------------- QMenuBarActionProvider |
148 | QMenuBarActionProvider::(QMenuBar *widget, QObject *parent) : |
149 | QObject(parent), |
150 | ActionProviderBase(widget), |
151 | m_widget(widget) |
152 | { |
153 | } |
154 | |
155 | QRect QMenuBarActionProvider::(QAction *action) const |
156 | { |
157 | return m_widget->actionGeometry(action); |
158 | } |
159 | |
160 | QAction *QMenuBarActionProvider::(const QPoint &pos) const |
161 | { |
162 | return m_widget->actionAt(pos); |
163 | } |
164 | |
165 | Qt::Orientation QMenuBarActionProvider::() const |
166 | { |
167 | return Qt::Horizontal; |
168 | } |
169 | |
170 | // ------------- QMenuActionProvider |
171 | QMenuActionProvider::(QMenu *widget, QObject *parent) : |
172 | QObject(parent), |
173 | ActionProviderBase(widget), |
174 | m_widget(widget) |
175 | { |
176 | } |
177 | |
178 | QRect QMenuActionProvider::(QAction *action) const |
179 | { |
180 | return m_widget->actionGeometry(action); |
181 | } |
182 | |
183 | QAction *QMenuActionProvider::(const QPoint &pos) const |
184 | { |
185 | return m_widget->actionAt(pos); |
186 | } |
187 | |
188 | Qt::Orientation QMenuActionProvider::() const |
189 | { |
190 | return Qt::Vertical; |
191 | } |
192 | } |
193 | |
194 | QT_END_NAMESPACE |
195 | |