plugin test

popup.pri

HEADERS     += popupmenu.h
SOURCES     += popupmenu.cc

popupmenu.cc

#include "popupmenu.h"

#include <QMouseEvent>
#include <QPainter>
#include <QTimer>

PopupMenu::PopupMenu(QWidget *parent)
    : QWidget(parent)
{
    setWindowTitle(tr("Popup Menu"));
    resize(120, 120);
}

popupmenu.h

#ifndef POPUPMENU_H
#define POPUPMENU_H

#include <QTime>
#include <QWidget>
#include <QtUiPlugin/QDesignerExportWidget>

class QDESIGNER_WIDGET_EXPORT PopupMenu : public QWidget
{
    Q_OBJECT

public:
    explicit PopupMenu(QWidget *parent = nullptr);
};

#endif

popupmenu.json.in

{
    \"Name\" : \"PopupMenu\",
    \"Version\" : \"4.5.0\",
    \"CompatVersion\" : \"4.5.0\",
    \"Vendor\" : \"paule\",
    \"Copyright\" : \"(C) 2018 paule32\",
    \"License\" : \"non-profit only\",
    \"Description\" : \"extends QtCreator\",
    \"Url\" : \"http://www.kallup.org\",
    $$dependencyList
}

popupmenu.pro

CONFIG      += plugin debug
TARGET      = PopupMenu
TEMPLATE    = lib

HEADERS     += popupmenuplugin.h
SOURCES     += popupmenuplugin.cc
RESOURCES   += icons.qrc 
LIBS        += -L. 

#PLUGIN_TYPE = designer
#PLUGIN_CLASS_NAME = PopupMenu

OTHER_FILES += PopupMenu.json

QT += widgets uiplugin

target.path = /home/jens/qtcreator/4.5.0/lib/qtcreator/plugins
INSTALLS    += target

include(popupmenu.pri)

DISTFILES += \
    popupmenu.pri \
    PopupMenu.json.in

popupmenuplugin.cc

#include "popupmenu.h"
#include "popupmenuplugin.h"

#include <QtPlugin>

PopupMenuPlugin::PopupMenuPlugin(QObject *parent)
    : QObject(parent)
{
}

void PopupMenuPlugin::initialize(QDesignerFormEditorInterface * /* core */)
{
    if (initialized)
        return;

    initialized = true;
}

bool PopupMenuPlugin::isInitialized() const
{
    return initialized;
}

QWidget *PopupMenuPlugin::createWidget(QWidget *parent)
{
    return new PopupMenu(parent);
}

QString PopupMenuPlugin::name() const
{
    return QStringLiteral("PopupMenu");
}

QString PopupMenuPlugin::group() const
{
    return QStringLiteral("Display Widgets [kallup]");
}

QIcon PopupMenuPlugin::icon() const
{
    return QIcon();
}

QString PopupMenuPlugin::toolTip() const
{
    return QString();
}

QString PopupMenuPlugin::whatsThis() const
{
    return QString();
}

bool PopupMenuPlugin::isContainer() const
{
    return false;
}

QString PopupMenuPlugin::domXml() const
{
    return "<ui language=\"c++\">\n"
           " <widget class=\"PopupMenu\" name=\"popupMenu\">\n"
           "  <property name=\"geometry\">\n"
           "   <rect>\n"
           "    <x>0</x>\n"
           "    <y>0</y>\n"
           "    <width>100</width>\n"
           "    <height>100</height>\n"
           "   </rect>\n"
           "  </property>\n"
           " </widget>\n"
           "</ui>";
}

QString PopupMenuPlugin::includeFile() const
{
    return QStringLiteral("popupmenu.h");
}

popupmenuplugin.h

#ifndef POPMENUPLUGIN_H
#define POPMENUPLUGIN_H

#include <QtUiPlugin/QDesignerCustomWidgetInterface>

class PopupMenuPlugin :
    public QObject,
    public QDesignerCustomWidgetInterface
{
    Q_OBJECT
    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QDesignerCustomWidgetInterface")
    Q_INTERFACES(QDesignerCustomWidgetInterface)

public:
    explicit PopupMenuPlugin(QObject *parent = nullptr);

    bool isContainer() const override;
    bool isInitialized() const override;
    QIcon icon() const override;
    QString domXml() const override;
    QString group() const override;
    QString includeFile() const override;
    QString name() const override;
    QString toolTip() const override;
    QString whatsThis() const override;
    QWidget *createWidget(QWidget *parent) override;
    void initialize(QDesignerFormEditorInterface *core) override;

private:
    bool initialized = false;
};

#endif