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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 ** $QT_BEGIN_LICENSE:GPL-EXCEPT$
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17 ** GNU General Public License Usage
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27 ****************************************************************************/
28
29 #include "formwindow_widgetstack.h"
30 #include <QtDesigner/abstractformwindowtool.h>
31
32 #include <QtWidgets/qwidget.h>
33 #include <QtGui/qevent.h>
34 #include <QtWidgets/qaction.h>
35 #include <QtWidgets/qstackedlayout.h>
36 #include <QtWidgets/qboxlayout.h>
37
38 #include <QtCore/qdebug.h>
39
40 QT_BEGIN_NAMESPACE
41
42 using namespace qdesigner_internal;
43
FormWindowWidgetStack(QObject * parent)44 FormWindowWidgetStack::FormWindowWidgetStack(QObject *parent) :
45 QObject(parent),
46 m_formContainer(new QWidget),
47 m_formContainerLayout(new QStackedLayout),
48 m_layout(new QStackedLayout)
49 {
50 m_layout->setContentsMargins(QMargins());
51 m_layout->setSpacing(0);
52 m_layout->setStackingMode(QStackedLayout::StackAll);
53
54 // We choose a QStackedLayout as immediate layout for
55 // the form windows as it ignores the sizePolicy of
56 // its child (for example, Fixed would cause undesired side effects).
57 m_formContainerLayout->setContentsMargins(QMargins());
58 m_formContainer->setObjectName(QStringLiteral("formContainer"));
59 m_formContainer->setLayout(m_formContainerLayout);
60 m_formContainerLayout->setStackingMode(QStackedLayout::StackAll);
61 // System settings might have different background colors, autofill them
62 // (affects for example mainwindow status bars)
63 m_formContainer->setAutoFillBackground(true);
64 }
65
66 FormWindowWidgetStack::~FormWindowWidgetStack() = default;
67
count() const68 int FormWindowWidgetStack::count() const
69 {
70 return m_tools.count();
71 }
72
currentTool() const73 QDesignerFormWindowToolInterface *FormWindowWidgetStack::currentTool() const
74 {
75 return tool(currentIndex());
76 }
77
setCurrentTool(int index)78 void FormWindowWidgetStack::setCurrentTool(int index)
79 {
80 const int cnt = count();
81 if (index < 0 || index >= cnt) {
82 qDebug("FormWindowWidgetStack::setCurrentTool(): invalid index: %d", index);
83 return;
84 }
85
86 const int cur = currentIndex();
87 if (index == cur)
88 return;
89
90 if (cur != -1)
91 m_tools.at(cur)->deactivated();
92
93
94 m_layout->setCurrentIndex(index);
95 // Show the widget editor and the current tool
96 for (int i = 0; i < cnt; i++)
97 m_tools.at(i)->editor()->setVisible(i == 0 || i == index);
98
99 QDesignerFormWindowToolInterface *tool = m_tools.at(index);
100 tool->activated();
101
102 emit currentToolChanged(index);
103 }
104
setSenderAsCurrentTool()105 void FormWindowWidgetStack::setSenderAsCurrentTool()
106 {
107 QDesignerFormWindowToolInterface *tool = nullptr;
108 QAction *action = qobject_cast<QAction*>(sender());
109 if (action == nullptr) {
110 qDebug("FormWindowWidgetStack::setSenderAsCurrentTool(): sender is not a QAction");
111 return;
112 }
113
114 for (QDesignerFormWindowToolInterface *t : qAsConst(m_tools)) {
115 if (action == t->action()) {
116 tool = t;
117 break;
118 }
119 }
120
121 if (tool == nullptr) {
122 qDebug("FormWindowWidgetStack::setSenderAsCurrentTool(): unknown tool");
123 return;
124 }
125
126 setCurrentTool(tool);
127 }
128
indexOf(QDesignerFormWindowToolInterface * tool) const129 int FormWindowWidgetStack::indexOf(QDesignerFormWindowToolInterface *tool) const
130 {
131 return m_tools.indexOf(tool);
132 }
133
setCurrentTool(QDesignerFormWindowToolInterface * tool)134 void FormWindowWidgetStack::setCurrentTool(QDesignerFormWindowToolInterface *tool)
135 {
136 int index = indexOf(tool);
137 if (index == -1) {
138 qDebug("FormWindowWidgetStack::setCurrentTool(): unknown tool");
139 return;
140 }
141
142 setCurrentTool(index);
143 }
144
setMainContainer(QWidget * w)145 void FormWindowWidgetStack::setMainContainer(QWidget *w)
146 {
147 // This code is triggered once by the formwindow and
148 // by integrations doing "revert to saved". Anything changing?
149 const int previousCount = m_formContainerLayout->count();
150 QWidget *previousMainContainer = previousCount
151 ? m_formContainerLayout->itemAt(0)->widget() : nullptr;
152 if (previousMainContainer == w)
153 return;
154 // Swap
155 if (previousCount)
156 delete m_formContainerLayout->takeAt(0);
157 if (w)
158 m_formContainerLayout->addWidget(w);
159 }
160
addTool(QDesignerFormWindowToolInterface * tool)161 void FormWindowWidgetStack::addTool(QDesignerFormWindowToolInterface *tool)
162 {
163 if (QWidget *w = tool->editor()) {
164 w->setVisible(m_layout->count() == 0); // Initially only form editor is visible
165 m_layout->addWidget(w);
166 } else {
167 // The form editor might not have a tool initially, use dummy. Assert on anything else
168 Q_ASSERT(m_tools.isEmpty());
169 m_layout->addWidget(m_formContainer);
170 }
171
172 m_tools.append(tool);
173
174 connect(tool->action(), &QAction::triggered,
175 this, &FormWindowWidgetStack::setSenderAsCurrentTool);
176 }
177
tool(int index) const178 QDesignerFormWindowToolInterface *FormWindowWidgetStack::tool(int index) const
179 {
180 if (index < 0 || index >= count())
181 return nullptr;
182
183 return m_tools.at(index);
184 }
185
currentIndex() const186 int FormWindowWidgetStack::currentIndex() const
187 {
188 return m_layout->currentIndex();
189 }
190
defaultEditor() const191 QWidget *FormWindowWidgetStack::defaultEditor() const
192 {
193 if (m_tools.isEmpty())
194 return nullptr;
195
196 return m_tools.at(0)->editor();
197 }
198
layout() const199 QLayout *FormWindowWidgetStack::layout() const
200 {
201 return m_layout;
202 }
203
204 QT_END_NAMESPACE
205