tools/designer/src/components/widgetbox/widgetbox_dnditem.cpp
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/designer/src/components/widgetbox/widgetbox_dnditem.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,225 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Designer of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "widgetbox_dnditem.h"
+#include "ui4_p.h"
+
+#include <widgetfactory_p.h>
+#include <spacer_widget_p.h>
+#include <qdesigner_formbuilder_p.h>
+#include <qtresourcemodel_p.h>
+#include <formscriptrunner_p.h>
+#include <formwindowbase_p.h>
+#include <qdesigner_utils_p.h>
+#include <qdesigner_dockwidget_p.h>
+#include <qsimpleresource_p.h>
+
+#include <QtDesigner/QDesignerFormEditorInterface>
+#include <QtDesigner/QDesignerFormWindowManagerInterface>
+
+#include <QtGui/QStyle>
+#include <QtGui/QApplication>
+
+QT_BEGIN_NAMESPACE
+
+namespace qdesigner_internal {
+/*******************************************************************************
+** WidgetBoxResource
+*/
+
+static inline DeviceProfile currentDeviceProfile(const QDesignerFormEditorInterface *core)
+{
+    if (QDesignerFormWindowInterface *cfw = core->formWindowManager()->activeFormWindow())
+        if (const FormWindowBase *fwb = qobject_cast<const FormWindowBase *>(cfw))
+            return fwb->deviceProfile();
+    return DeviceProfile();
+}
+
+class WidgetBoxResource : public QDesignerFormBuilder
+{
+public:
+    WidgetBoxResource(QDesignerFormEditorInterface *core);
+
+    // protected->public
+   QWidget *createUI(DomUI *ui, QWidget *parents) { return QDesignerFormBuilder::create(ui, parents); }
+
+protected:
+
+    virtual QWidget *create(DomWidget *ui_widget, QWidget *parents);
+    virtual QWidget *createWidget(const QString &widgetName, QWidget *parentWidget, const QString &name);
+    virtual void createCustomWidgets(DomCustomWidgets *);
+};
+
+WidgetBoxResource::WidgetBoxResource(QDesignerFormEditorInterface *core) :
+    QDesignerFormBuilder(core, DisableScripts, currentDeviceProfile(core))
+{
+}
+
+
+QWidget *WidgetBoxResource::createWidget(const QString &widgetName, QWidget *parentWidget, const QString &name)
+{
+    if (widgetName == QLatin1String("Spacer")) {
+        Spacer *spacer = new Spacer(parentWidget);
+        spacer->setObjectName(name);
+        return spacer;
+    }
+
+    return QDesignerFormBuilder::createWidget(widgetName, parentWidget, name);
+}
+
+QWidget *WidgetBoxResource::create(DomWidget *ui_widget, QWidget *parent)
+{
+    QWidget *result = QDesignerFormBuilder::create(ui_widget, parent);
+    // It is possible to have a syntax error or something in custom
+    // widget XML, so, try to recover here by creating an artificial
+    // top level + widget.
+    if (!result) {
+        const QString msg = QApplication::translate("qdesigner_internal::WidgetBox", "Warning: Widget creation failed in the widget box. This could be caused by invalid custom widget XML.");
+        qdesigner_internal::designerWarning(msg);
+        result = new QWidget(parent);
+        new QWidget(result);
+    }
+    result->setFocusPolicy(Qt::NoFocus);
+    result->setObjectName(ui_widget->attributeName());
+    return result;
+}
+
+void WidgetBoxResource::createCustomWidgets(DomCustomWidgets *dc)
+{
+    // Make a promotion entry in  case someone has a promoted widget
+    // in the scratchpad.
+    QSimpleResource::handleDomCustomWidgets(core(), dc);
+
+}
+
+/*******************************************************************************
+** WidgetBoxResource
+*/
+
+static QSize geometryProp(const DomWidget *dw)
+{
+    const QList<DomProperty*> prop_list = dw->elementProperty();
+    const QString geometry = QLatin1String("geometry");
+    foreach (DomProperty *prop, prop_list) {
+        if (prop->attributeName() !=  geometry)
+            continue;
+        DomRect *dr = prop->elementRect();
+        if (dr == 0)
+            continue;
+        return QSize(dr->elementWidth(), dr->elementHeight());
+    }
+    return QSize();
+}
+
+static QSize domWidgetSize(const DomWidget *dw)
+{
+    QSize size = geometryProp(dw);
+    if (size.isValid())
+        return size;
+
+    foreach (const DomWidget *child, dw->elementWidget()) {
+        size = geometryProp(child);
+        if (size.isValid())
+            return size;
+    }
+
+    foreach (const DomLayout *dl, dw->elementLayout()) {
+        foreach (DomLayoutItem *item, dl->elementItem()) {
+            const DomWidget *child = item->elementWidget();
+            if (child == 0)
+                continue;
+            size = geometryProp(child);
+            if (size.isValid())
+                return size;
+        }
+    }
+
+    return QSize();
+}
+
+static QWidget *decorationFromDomWidget(DomUI *dom_ui, QDesignerFormEditorInterface *core)
+{
+    WidgetBoxResource builder(core);
+    // We have the builder create the articial QWidget fake top level as a tooltip
+    // because the size algorithm works better at weird DPI settings
+    // if the actual widget is created as a child of a container
+    QWidget *fakeTopLevel = builder.createUI(dom_ui, static_cast<QWidget*>(0));
+    fakeTopLevel->setParent(0, Qt::ToolTip); // Container
+    // Actual widget
+    const DomWidget *domW = dom_ui->elementWidget()->elementWidget().front();
+    QWidget *w = qFindChildren<QWidget*>(fakeTopLevel).front();
+    Q_ASSERT(w);
+    // hack begin;
+    // We set _q_dockDrag dynamic property which will be detected in drag enter event of form window.
+    // Dock drop is handled in special way (highlight goes to central widget of main window)
+    if (qobject_cast<QDesignerDockWidget *>(w))
+        fakeTopLevel->setProperty("_q_dockDrag", QVariant(true));
+    // hack end;
+    w->setAutoFillBackground(true); // Different style for embedded
+    QSize size = domWidgetSize(domW);
+    const QSize minimumSize = w->minimumSizeHint();
+    if (!size.isValid())
+        size = w->sizeHint();
+    if (size.width() < minimumSize.width())
+        size.setWidth(minimumSize.width());
+    if (size.height() < minimumSize.height())
+        size.setHeight(minimumSize.height());
+    // A QWidget might have size -1,-1 if no geometry property is specified in the widget box.
+    if (size.isEmpty())
+        size = size.expandedTo(QSize(16, 16));
+    w->setGeometry(QRect(QPoint(0, 0), size));
+    fakeTopLevel->resize(size);
+    return fakeTopLevel;
+}
+
+WidgetBoxDnDItem::WidgetBoxDnDItem(QDesignerFormEditorInterface *core,
+                                   DomUI *dom_ui,
+                                   const QPoint &global_mouse_pos) :
+    QDesignerDnDItem(CopyDrop)
+{
+    QWidget *decoration = decorationFromDomWidget(dom_ui, core);
+    decoration->move(global_mouse_pos - QPoint(5, 5));
+
+    init(dom_ui, 0, decoration, global_mouse_pos);
+}
+}
+
+QT_END_NAMESPACE