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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
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17 ** GNU General Public License Usage
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20 ** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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25 ** $QT_END_LICENSE$
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27 ****************************************************************************/
28
29 #include "widgetbox.h"
30 #include "widgetboxtreewidget.h"
31 #include "widgetbox_dnditem.h"
32
33 #include <QtDesigner/abstractformeditor.h>
34 #include <QtDesigner/abstractformwindowmanager.h>
35
36 #include <iconloader_p.h>
37 #include <qdesigner_utils_p.h>
38
39 #include <QtGui/qevent.h>
40 #include <QtWidgets/qboxlayout.h>
41 #include <QtWidgets/qapplication.h>
42 #include <QtWidgets/qtoolbar.h>
43 #include <QtWidgets/qlineedit.h>
44 #include <QtGui/qicon.h>
45
46 QT_BEGIN_NAMESPACE
47
48 namespace qdesigner_internal {
49
50 /* WidgetBoxFilterLineEdit: This widget should never have initial focus
51 * (ie, be the first widget of a dialog, else, the hint cannot be displayed.
52 * As it is the only focusable control in the widget box, it clears the focus
53 * policy and focusses explicitly on click only (note that setting Qt::ClickFocus
54 * is not sufficient for that as an ActivationFocus will occur). */
55
56 class WidgetBoxFilterLineEdit : public QLineEdit {
57 public:
WidgetBoxFilterLineEdit(QWidget * parent=nullptr)58 explicit WidgetBoxFilterLineEdit(QWidget *parent = nullptr) : QLineEdit(parent), m_defaultFocusPolicy(focusPolicy())
59 { setFocusPolicy(Qt::NoFocus); }
60
61 protected:
62 void mousePressEvent(QMouseEvent *event) override;
63 void focusInEvent(QFocusEvent *e) override;
64
65 private:
66 const Qt::FocusPolicy m_defaultFocusPolicy;
67 };
68
mousePressEvent(QMouseEvent * e)69 void WidgetBoxFilterLineEdit::mousePressEvent(QMouseEvent *e)
70 {
71 if (!hasFocus()) // Explicitly focus on click.
72 setFocus(Qt::OtherFocusReason);
73 QLineEdit::mousePressEvent(e);
74 }
75
focusInEvent(QFocusEvent * e)76 void WidgetBoxFilterLineEdit::focusInEvent(QFocusEvent *e)
77 {
78 // Refuse the focus if the mouse it outside. In addition to the mouse
79 // press logic, this prevents a re-focussing which occurs once
80 // we actually had focus
81 const Qt::FocusReason reason = e->reason();
82 if (reason == Qt::ActiveWindowFocusReason || reason == Qt::PopupFocusReason) {
83 const QPoint mousePos = mapFromGlobal(QCursor::pos());
84 const bool refuse = !geometry().contains(mousePos);
85 if (refuse) {
86 e->ignore();
87 return;
88 }
89 }
90 QLineEdit::focusInEvent(e);
91 }
92
WidgetBox(QDesignerFormEditorInterface * core,QWidget * parent,Qt::WindowFlags flags)93 WidgetBox::WidgetBox(QDesignerFormEditorInterface *core, QWidget *parent, Qt::WindowFlags flags)
94 : QDesignerWidgetBox(parent, flags),
95 m_core(core),
96 m_view(new WidgetBoxTreeWidget(m_core))
97 {
98
99 QVBoxLayout *l = new QVBoxLayout(this);
100 l->setContentsMargins(QMargins());
101 l->setSpacing(0);
102
103 // Prevent the filter from grabbing focus since Our view has Qt::NoFocus
104 QToolBar *toolBar = new QToolBar(this);
105 QLineEdit *filterWidget = new WidgetBoxFilterLineEdit(toolBar);
106 filterWidget->setPlaceholderText(tr("Filter"));
107 filterWidget->setClearButtonEnabled(true);
108 connect(filterWidget, &QLineEdit::textChanged, m_view, &WidgetBoxTreeWidget::filter);
109 toolBar->addWidget(filterWidget);
110 l->addWidget(toolBar);
111
112 // View
113 connect(m_view, &WidgetBoxTreeWidget::pressed,
114 this, &WidgetBox::handleMousePress);
115 l->addWidget(m_view);
116
117 setAcceptDrops (true);
118 }
119
120 WidgetBox::~WidgetBox() = default;
121
core() const122 QDesignerFormEditorInterface *WidgetBox::core() const
123 {
124 return m_core;
125 }
126
handleMousePress(const QString & name,const QString & xml,const QPoint & global_mouse_pos)127 void WidgetBox::handleMousePress(const QString &name, const QString &xml, const QPoint &global_mouse_pos)
128 {
129 if (QApplication::mouseButtons() != Qt::LeftButton)
130 return;
131
132 DomUI *ui = xmlToUi(name, xml, true);
133 if (ui == nullptr)
134 return;
135 QList<QDesignerDnDItemInterface*> item_list;
136 item_list.append(new WidgetBoxDnDItem(core(), ui, global_mouse_pos));
137 m_core->formWindowManager()->dragItems(item_list);
138 }
139
categoryCount() const140 int WidgetBox::categoryCount() const
141 {
142 return m_view->categoryCount();
143 }
144
category(int cat_idx) const145 QDesignerWidgetBoxInterface::Category WidgetBox::category(int cat_idx) const
146 {
147 return m_view->category(cat_idx);
148 }
149
addCategory(const Category & cat)150 void WidgetBox::addCategory(const Category &cat)
151 {
152 m_view->addCategory(cat);
153 }
154
removeCategory(int cat_idx)155 void WidgetBox::removeCategory(int cat_idx)
156 {
157 m_view->removeCategory(cat_idx);
158 }
159
widgetCount(int cat_idx) const160 int WidgetBox::widgetCount(int cat_idx) const
161 {
162 return m_view->widgetCount(cat_idx);
163 }
164
widget(int cat_idx,int wgt_idx) const165 QDesignerWidgetBoxInterface::Widget WidgetBox::widget(int cat_idx, int wgt_idx) const
166 {
167 return m_view->widget(cat_idx, wgt_idx);
168 }
169
addWidget(int cat_idx,const Widget & wgt)170 void WidgetBox::addWidget(int cat_idx, const Widget &wgt)
171 {
172 m_view->addWidget(cat_idx, wgt);
173 }
174
removeWidget(int cat_idx,int wgt_idx)175 void WidgetBox::removeWidget(int cat_idx, int wgt_idx)
176 {
177 m_view->removeWidget(cat_idx, wgt_idx);
178 }
179
dropWidgets(const QList<QDesignerDnDItemInterface * > & item_list,const QPoint &)180 void WidgetBox::dropWidgets(const QList<QDesignerDnDItemInterface*> &item_list, const QPoint&)
181 {
182 m_view->dropWidgets(item_list);
183 }
184
setFileName(const QString & file_name)185 void WidgetBox::setFileName(const QString &file_name)
186 {
187 m_view->setFileName(file_name);
188 }
189
fileName() const190 QString WidgetBox::fileName() const
191 {
192 return m_view->fileName();
193 }
194
load()195 bool WidgetBox::load()
196 {
197 return m_view->load(loadMode());
198 }
199
loadContents(const QString & contents)200 bool WidgetBox::loadContents(const QString &contents)
201 {
202 return m_view->loadContents(contents);
203 }
204
save()205 bool WidgetBox::save()
206 {
207 return m_view->save();
208 }
209
checkDragEvent(QDropEvent * event,bool acceptEventsFromWidgetBox)210 static const QDesignerMimeData *checkDragEvent(QDropEvent * event,
211 bool acceptEventsFromWidgetBox)
212 {
213 const QDesignerMimeData *mimeData = qobject_cast<const QDesignerMimeData *>(event->mimeData());
214 if (!mimeData) {
215 event->ignore();
216 return nullptr;
217 }
218 // If desired, ignore a widget box drag and drop, where widget==0.
219 if (!acceptEventsFromWidgetBox) {
220 const bool fromWidgetBox = !mimeData->items().first()->widget();
221 if (fromWidgetBox) {
222 event->ignore();
223 return nullptr;
224 }
225 }
226
227 mimeData->acceptEvent(event);
228 return mimeData;
229 }
230
dragEnterEvent(QDragEnterEvent * event)231 void WidgetBox::dragEnterEvent (QDragEnterEvent * event)
232 {
233 // We accept event originating from the widget box also here,
234 // because otherwise Windows will not show the DnD pixmap.
235 checkDragEvent(event, true);
236 }
237
dragMoveEvent(QDragMoveEvent * event)238 void WidgetBox::dragMoveEvent(QDragMoveEvent * event)
239 {
240 checkDragEvent(event, true);
241 }
242
dropEvent(QDropEvent * event)243 void WidgetBox::dropEvent(QDropEvent * event)
244 {
245 const QDesignerMimeData *mimeData = checkDragEvent(event, false);
246 if (!mimeData)
247 return;
248
249 dropWidgets(mimeData->items(), event->pos());
250 QDesignerMimeData::removeMovedWidgetsFromSourceForm(mimeData->items());
251 }
252
iconForWidget(const QString & className,const QString & category) const253 QIcon WidgetBox::iconForWidget(const QString &className, const QString &category) const
254 {
255 Widget widgetData;
256 if (!findWidget(this, className, category, &widgetData))
257 return QIcon();
258 return m_view->iconForWidget(widgetData.iconName());
259 }
260
261 } // namespace qdesigner_internal
262
263 QT_END_NAMESPACE
264