/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>

#include <iostream>

#include <LibreOfficeKit/LibreOfficeKitGtk.h>
#include <LibreOfficeKit/LibreOfficeKitEnums.h>

#include "gtv-application-window.hxx"
#include "gtv-lok-dialog.hxx"

#include <com/sun/star/awt/Key.hpp>

#include <o3tl/unit_conversion.hxx>
#include <vcl/event.hxx>

namespace {

struct GtvLokDialogPrivate
{
    LOKDocView* lokdocview;
    GtkWidget* pDialogDrawingArea;
    GtkWidget* pFloatingWin;

    // state for dialog
    guint32 m_nLastButtonPressTime;
    guint32 m_nLastButtonReleaseTime;
    guint32 m_nKeyModifier;
    guint32 m_nLastButtonPressed;
    guint32 m_nWidth;
    guint32 m_nHeight;

    // state for child floating windows
    guint32 m_nChildId;
    guint32 m_nChildWidth;
    guint32 m_nChildHeight;
    guint32 m_nChildLastButtonPressTime;
    guint32 m_nChildLastButtonReleaseTime;
    guint32 m_nChildKeyModifier;
    guint32 m_nChildLastButtonPressed;

    guint dialogid;
};

}

#if defined __clang__
#if __has_warning("-Wdeprecated-volatile")
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-volatile"
#endif
#endif
G_DEFINE_TYPE_WITH_PRIVATE(GtvLokDialog, gtv_lok_dialog, GTK_TYPE_DIALOG);
#if defined __clang__
#if __has_warning("-Wdeprecated-volatile")
#pragma clang diagnostic pop
#endif
#endif

enum
{
    PROP_0,
    PROP_LOKDOCVIEW_CONTEXT,
    PROP_DIALOG_ID,
    PROP_DIALOG_WIDTH,
    PROP_DIALOG_HEIGHT,
    PROP_LAST
};

static GParamSpec* properties[PROP_LAST];

static GtvLokDialogPrivate*
getPrivate(GtvLokDialog* dialog)
{
    return static_cast<GtvLokDialogPrivate*>(gtv_lok_dialog_get_instance_private(dialog));
}

static void
gtv_lok_dialog_draw(GtkWidget* pDialogDrawingArea, cairo_t* pCairo, gpointer)
{
    GtvLokDialog* pDialog = GTV_LOK_DIALOG(gtk_widget_get_toplevel(pDialogDrawingArea));
    GtvLokDialogPrivate* priv = getPrivate(pDialog);

    GdkRectangle aRect;
    gdk_cairo_get_clip_rectangle(pCairo, &aRect);
    g_info("Painting dialog region: %d, %d, %d, %d", aRect.x, aRect.y, aRect.width, aRect.height);

    int nWidth = priv->m_nWidth;
    int nHeight = priv->m_nHeight;
    if (aRect.width != 0 && aRect.height != 0)
    {
        nWidth = aRect.width;
        nHeight = aRect.height;
    }

    cairo_surface_t* pSurface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, nWidth, nHeight);
    unsigned char* pBuffer = cairo_image_surface_get_data(pSurface);
    LibreOfficeKitDocument* pDocument = lok_doc_view_get_document(LOK_DOC_VIEW(priv->lokdocview));
    pDocument->pClass->paintWindow(pDocument, priv->dialogid, pBuffer, aRect.x, aRect.y, nWidth, nHeight);

    gtk_widget_set_size_request(GTK_WIDGET(pDialogDrawingArea), priv->m_nWidth, priv->m_nHeight);

    cairo_surface_flush(pSurface);
    cairo_surface_mark_dirty(pSurface);

    cairo_set_source_surface(pCairo, pSurface, aRect.x, aRect.y);
    // paint the dialog image
    cairo_paint(pCairo);

    // debug red-colored border around the painted region
    cairo_set_source_rgb(pCairo, 1.0, 0, 0);
    cairo_rectangle(pCairo, aRect.x, aRect.y, nWidth, nHeight);
    cairo_stroke(pCairo);
}

static gboolean
gtv_lok_dialog_signal_button(GtkWidget* pDialogDrawingArea, GdkEventButton* pEvent)
{
    GtvLokDialog* pDialog = GTV_LOK_DIALOG(gtk_widget_get_toplevel(pDialogDrawingArea));
    GtvLokDialogPrivate* priv = getPrivate(pDialog);

    GtvApplicationWindow* window = GTV_APPLICATION_WINDOW(gtk_window_get_transient_for(GTK_WINDOW(pDialog)));
    LibreOfficeKitDocument* pDocument = lok_doc_view_get_document(LOK_DOC_VIEW(window->lokdocview));

    std::string aEventType = "unknown";
    if (pEvent->type == GDK_BUTTON_PRESS)
        aEventType = "BUTTON_PRESS";
    else if (pEvent->type == GDK_BUTTON_RELEASE)
        aEventType = "BUTTON_RELEASE";

    g_info("lok_dialog_signal_button (type: %s): %d, %d",
           aEventType.c_str(),
           static_cast<int>(pEvent->x), static_cast<int>(pEvent->y));
    gtk_widget_grab_focus(pDialogDrawingArea);

    switch (pEvent->type)
    {
    case GDK_BUTTON_PRESS:
    {
        int nCount = 1;
        if ((pEvent->time - priv->m_nLastButtonPressTime) < 250)
            nCount++;
        priv->m_nLastButtonPressTime = pEvent->time;
        int nEventButton = 0;
        switch (pEvent->button)
        {
        case 1:
            nEventButton = MOUSE_LEFT;
            break;
        case 2:
            nEventButton = MOUSE_MIDDLE;
            break;
        case 3:
            nEventButton = MOUSE_RIGHT;
            break;
        }
        priv->m_nLastButtonPressed = nEventButton;
        pDocument->pClass->postWindowMouseEvent(pDocument,
                                                priv->dialogid,
                                                LOK_MOUSEEVENT_MOUSEBUTTONDOWN,
                                                (pEvent->x),
                                                (pEvent->y),
                                                nCount,
                                                nEventButton,
                                                priv->m_nKeyModifier);

        break;
    }
    case GDK_BUTTON_RELEASE:
    {
        int nCount = 1;
        if ((pEvent->time - priv->m_nLastButtonReleaseTime) < 250)
            nCount++;
        priv->m_nLastButtonReleaseTime = pEvent->time;
        int nEventButton = 0;
        switch (pEvent->button)
        {
        case 1:
            nEventButton = MOUSE_LEFT;
            break;
        case 2:
            nEventButton = MOUSE_MIDDLE;
            break;
        case 3:
            nEventButton = MOUSE_RIGHT;
            break;
        }
        priv->m_nLastButtonPressed = nEventButton;
        pDocument->pClass->postWindowMouseEvent(pDocument,
                                                priv->dialogid,
                                                LOK_MOUSEEVENT_MOUSEBUTTONUP,
                                                (pEvent->x),
                                                (pEvent->y),
                                                nCount,
                                                nEventButton,
                                                priv->m_nKeyModifier);
        break;
    }
    default:
        break;
    }
    return FALSE;
}

static gboolean
gtv_lok_dialog_signal_motion(GtkWidget* pDialogDrawingArea, GdkEventButton* pEvent)
{
    GtvLokDialog* pDialog = GTV_LOK_DIALOG(gtk_widget_get_toplevel(pDialogDrawingArea));
    GtvLokDialogPrivate* priv = getPrivate(pDialog);

    GtvApplicationWindow* window = GTV_APPLICATION_WINDOW(gtk_window_get_transient_for(GTK_WINDOW(pDialog)));
    LibreOfficeKitDocument* pDocument = lok_doc_view_get_document(LOK_DOC_VIEW(window->lokdocview));

    g_info("lok_dialog_signal_motion: %d, %d (in twips: %d, %d)",
           static_cast<int>(pEvent->x), static_cast<int>(pEvent->y),
           static_cast<int>(o3tl::toTwips(pEvent->x, o3tl::Length::px)),
           static_cast<int>(o3tl::toTwips(pEvent->y, o3tl::Length::px)));

    pDocument->pClass->postWindowMouseEvent(pDocument,
                                            priv->dialogid,
                                            LOK_MOUSEEVENT_MOUSEMOVE,
                                            (pEvent->x),
                                            (pEvent->y),
                                            1,
                                            priv->m_nLastButtonPressed,
                                            priv->m_nKeyModifier);

    return FALSE;
}

static gboolean
gtv_lok_dialog_signal_key(GtkWidget* pDialogDrawingArea, GdkEventKey* pEvent)
{
    GtvLokDialog* pDialog = GTV_LOK_DIALOG(gtk_widget_get_toplevel(pDialogDrawingArea));
    GtvLokDialogPrivate* priv = getPrivate(pDialog);
    GtvApplicationWindow* window = GTV_APPLICATION_WINDOW(gtk_window_get_transient_for(GTK_WINDOW(pDialog)));
    LibreOfficeKitDocument* pDocument = lok_doc_view_get_document(LOK_DOC_VIEW(window->lokdocview));

    g_info("lok_dialog_signal_key");
    int nCharCode = 0;
    int nKeyCode = 0;
    priv->m_nKeyModifier &= KEY_MOD2;
    switch (pEvent->keyval)
    {
    case GDK_KEY_BackSpace:
        nKeyCode = com::sun::star::awt::Key::BACKSPACE;
        break;
    case GDK_KEY_Delete:
        nKeyCode = com::sun::star::awt::Key::DELETE;
        break;
    case GDK_KEY_Return:
    case GDK_KEY_KP_Enter:
        nKeyCode = com::sun::star::awt::Key::RETURN;
        break;
    case GDK_KEY_Escape:
        nKeyCode = com::sun::star::awt::Key::ESCAPE;
        break;
    case GDK_KEY_Tab:
        nKeyCode = com::sun::star::awt::Key::TAB;
        break;
    case GDK_KEY_Down:
        nKeyCode = com::sun::star::awt::Key::DOWN;
        break;
    case GDK_KEY_Up:
        nKeyCode = com::sun::star::awt::Key::UP;
        break;
    case GDK_KEY_Left:
        nKeyCode = com::sun::star::awt::Key::LEFT;
        break;
    case GDK_KEY_Right:
        nKeyCode = com::sun::star::awt::Key::RIGHT;
        break;
    case GDK_KEY_Page_Down:
        nKeyCode = com::sun::star::awt::Key::PAGEDOWN;
        break;
    case GDK_KEY_Page_Up:
        nKeyCode = com::sun::star::awt::Key::PAGEUP;
        break;
    case GDK_KEY_Insert:
        nKeyCode = com::sun::star::awt::Key::INSERT;
        break;
    case GDK_KEY_Shift_L:
    case GDK_KEY_Shift_R:
        if (pEvent->type == GDK_KEY_PRESS)
            priv->m_nKeyModifier |= KEY_SHIFT;
        break;
    case GDK_KEY_Control_L:
    case GDK_KEY_Control_R:
        if (pEvent->type == GDK_KEY_PRESS)
            priv->m_nKeyModifier |= KEY_MOD1;
        break;
    case GDK_KEY_Alt_L:
    case GDK_KEY_Alt_R:
        if (pEvent->type == GDK_KEY_PRESS)
            priv->m_nKeyModifier |= KEY_MOD2;
        else
            priv->m_nKeyModifier &= ~KEY_MOD2;
        break;
    default:
        if (pEvent->keyval >= GDK_KEY_F1 && pEvent->keyval <= GDK_KEY_F26)
            nKeyCode = com::sun::star::awt::Key::F1 + (pEvent->keyval - GDK_KEY_F1);
        else
            nCharCode = gdk_keyval_to_unicode(pEvent->keyval);
    }

    // rsc is not public API, but should be good enough for debugging purposes.
    // If this is needed for real, then probably a new param of type
    // css::awt::KeyModifier is needed in postKeyEvent().
    if (pEvent->state & GDK_SHIFT_MASK)
        nKeyCode |= KEY_SHIFT;

    if (pEvent->state & GDK_CONTROL_MASK)
        nKeyCode |= KEY_MOD1;

    if (priv->m_nKeyModifier & KEY_MOD2)
        nKeyCode |= KEY_MOD2;

    if (nKeyCode & (KEY_SHIFT | KEY_MOD1 | KEY_MOD2)) {
        if (pEvent->keyval >= GDK_KEY_a && pEvent->keyval <= GDK_KEY_z)
        {
            nKeyCode |= 512 + (pEvent->keyval - GDK_KEY_a);
        }
        else if (pEvent->keyval >= GDK_KEY_A && pEvent->keyval <= GDK_KEY_Z) {
                nKeyCode |= 512 + (pEvent->keyval - GDK_KEY_A);
        }
        else if (pEvent->keyval >= GDK_KEY_0 && pEvent->keyval <= GDK_KEY_9) {
                nKeyCode |= 256 + (pEvent->keyval - GDK_KEY_0);
        }
    }

    std::stringstream ss;
    ss << "gtv_lok_dialog::postKey(" << pEvent->type << ", " << nCharCode << ", " << nKeyCode << ")";
    g_info("%s", ss.str().c_str());

    pDocument->pClass->postWindowKeyEvent(pDocument,
                                          priv->dialogid,
                                          pEvent->type == GDK_KEY_RELEASE ? LOK_KEYEVENT_KEYUP : LOK_KEYEVENT_KEYINPUT,
                                          nCharCode,
                                          nKeyCode);

    return FALSE;
}

static void
gtv_lok_dialog_init(GtvLokDialog* dialog)
{
    GtvLokDialogPrivate* priv = getPrivate(dialog);

    GtkWidget* pContentArea = gtk_dialog_get_content_area(GTK_DIALOG(dialog));
    priv->pDialogDrawingArea = gtk_drawing_area_new();
    priv->pFloatingWin = nullptr;
    priv->m_nChildId = 0;
    priv->m_nChildWidth = 0;
    priv->m_nChildHeight = 0;

    priv->m_nLastButtonPressTime = 0;
    priv->m_nLastButtonReleaseTime = 0;
    priv->m_nKeyModifier = 0;
    priv->m_nLastButtonPressed = 0;

    gtk_widget_add_events(priv->pDialogDrawingArea,
                          GDK_BUTTON_PRESS_MASK
                          |GDK_BUTTON_RELEASE_MASK
                          |GDK_BUTTON_MOTION_MASK
                          |GDK_KEY_PRESS_MASK
                          |GDK_KEY_RELEASE_MASK);
    // This is required to be able to capture key events on the drawing area
    gtk_widget_set_can_focus(priv->pDialogDrawingArea, true);

    g_signal_connect(G_OBJECT(priv->pDialogDrawingArea), "draw", G_CALLBACK(gtv_lok_dialog_draw), nullptr);
    g_signal_connect(G_OBJECT(priv->pDialogDrawingArea), "button-press-event", G_CALLBACK(gtv_lok_dialog_signal_button), nullptr);
    g_signal_connect(G_OBJECT(priv->pDialogDrawingArea), "button-release-event", G_CALLBACK(gtv_lok_dialog_signal_button), nullptr);
    g_signal_connect(G_OBJECT(priv->pDialogDrawingArea), "motion-notify-event", G_CALLBACK(gtv_lok_dialog_signal_motion), nullptr);
    g_signal_connect(G_OBJECT(priv->pDialogDrawingArea), "key-press-event", G_CALLBACK(gtv_lok_dialog_signal_key), nullptr);
    g_signal_connect(G_OBJECT(priv->pDialogDrawingArea), "key-release-event", G_CALLBACK(gtv_lok_dialog_signal_key), nullptr);
    gtk_container_add(GTK_CONTAINER(pContentArea), priv->pDialogDrawingArea);
}

static void
gtv_lok_dialog_set_property(GObject* object, guint propId, const GValue* value, GParamSpec* pspec)
{
    GtvLokDialog* self = GTV_LOK_DIALOG(object);
    GtvLokDialogPrivate* priv = getPrivate(self);

    switch(propId)
    {
    case PROP_LOKDOCVIEW_CONTEXT:
        priv->lokdocview = LOK_DOC_VIEW(g_value_get_object(value));
        break;
    case PROP_DIALOG_ID:
        priv->dialogid = g_value_get_uint(value);
        break;
    case PROP_DIALOG_WIDTH:
        priv->m_nWidth = g_value_get_uint(value);
        break;
    case PROP_DIALOG_HEIGHT:
        priv->m_nHeight = g_value_get_uint(value);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, propId, pspec);
    }

    //if (propId == PROP_DIALOG_WIDTH || propId == PROP_DIALOG_HEIGHT)
    //  gtk_widget_set_size_request(GTK_WIDGET(priv->pDialogDrawingArea), priv->m_nWidth, priv->m_nHeight);
}

static void
gtv_lok_dialog_get_property(GObject* object, guint propId, GValue* value, GParamSpec* pspec)
{
    GtvLokDialog* self = GTV_LOK_DIALOG(object);
    GtvLokDialogPrivate* priv = getPrivate(self);

    switch(propId)
    {
    case PROP_LOKDOCVIEW_CONTEXT:
        g_value_set_object(value, priv->lokdocview);
        break;
    case PROP_DIALOG_ID:
        g_value_set_uint(value, priv->dialogid);
        break;
    case PROP_DIALOG_WIDTH:
        g_value_set_uint(value, priv->m_nWidth);
        break;
    case PROP_DIALOG_HEIGHT:
        g_value_set_uint(value, priv->m_nHeight);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, propId, pspec);
    }
}

static void
gtv_lok_dialog_class_init(GtvLokDialogClass* klass)
{
    G_OBJECT_CLASS(klass)->get_property = gtv_lok_dialog_get_property;
    G_OBJECT_CLASS(klass)->set_property = gtv_lok_dialog_set_property;

    properties[PROP_LOKDOCVIEW_CONTEXT] = g_param_spec_object("lokdocview",
                                                              "LOKDocView Context",
                                                              "The LOKDocView context object to be used for dialog rendering",
                                                              LOK_TYPE_DOC_VIEW,
                                                              static_cast<GParamFlags>(G_PARAM_READWRITE |
                                                                                       G_PARAM_CONSTRUCT_ONLY |
                                                                                       G_PARAM_STATIC_STRINGS));

    properties[PROP_DIALOG_ID] = g_param_spec_uint("dialogid",
                                                   "Dialog identifier",
                                                   "Unique dialog identifier",
                                                   0, G_MAXUINT, 0,
                                                   static_cast<GParamFlags>(G_PARAM_READWRITE |
                                                                            G_PARAM_CONSTRUCT_ONLY |
                                                                            G_PARAM_STATIC_STRINGS));

    properties[PROP_DIALOG_WIDTH] = g_param_spec_uint("width",
                                                      "Dialog width",
                                                      "Dialog width",
                                                      0, 4096, 0,
                                                      static_cast<GParamFlags>(G_PARAM_READWRITE |
                                                                               G_PARAM_STATIC_STRINGS));

    properties[PROP_DIALOG_HEIGHT] = g_param_spec_uint("height",
                                                       "Dialog height",
                                                       "Dialog height",
                                                       0, 2048, 0,
                                                       static_cast<GParamFlags>(G_PARAM_READWRITE |
                                                                                G_PARAM_STATIC_STRINGS));

    g_object_class_install_properties (G_OBJECT_CLASS(klass), PROP_LAST, properties);
}

static void
gtv_lok_dialog_floating_win_draw(GtkWidget* pDrawingArea, cairo_t* pCairo, gpointer userdata)
{
    GtvLokDialog* pDialog = GTV_LOK_DIALOG(userdata);
    GtvLokDialogPrivate* priv = getPrivate(pDialog);

    g_info("gtv_lok_dialog_floating_win_draw triggered");
    cairo_surface_t* pSurface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, priv->m_nChildWidth, priv->m_nChildHeight);
    unsigned char* pBuffer = cairo_image_surface_get_data(pSurface);
    LibreOfficeKitDocument* pDocument = lok_doc_view_get_document(LOK_DOC_VIEW(priv->lokdocview));
    pDocument->pClass->paintWindow(pDocument, priv->m_nChildId, pBuffer, 0, 0, priv->m_nChildWidth, priv->m_nChildHeight);

    gtk_widget_set_size_request(GTK_WIDGET(pDrawingArea), priv->m_nChildWidth, priv->m_nChildHeight);
    //gtk_widget_set_size_request(GTK_WIDGET(pDialog), nWidth, nHeight);
    //gtk_window_resize(GTK_WINDOW(pDialog), nWidth, nHeight);

    cairo_surface_flush(pSurface);
    cairo_surface_mark_dirty(pSurface);

    cairo_set_source_surface(pCairo, pSurface, 0, 0);
    cairo_paint(pCairo);
}

static gboolean
gtv_lok_dialog_floating_win_signal_button(GtkWidget* /*pDialogChildDrawingArea*/, GdkEventButton* pEvent, gpointer userdata)
{
    GtvLokDialog* pDialog = GTV_LOK_DIALOG(userdata);
    GtvLokDialogPrivate* priv = getPrivate(pDialog);

    GtvApplicationWindow* window = GTV_APPLICATION_WINDOW(gtk_window_get_transient_for(GTK_WINDOW(pDialog)));
    LibreOfficeKitDocument* pDocument = lok_doc_view_get_document(LOK_DOC_VIEW(window->lokdocview));

    std::string aEventType = "unknown";
    if (pEvent->type == GDK_BUTTON_PRESS)
        aEventType = "BUTTON_PRESS";
    else if (pEvent->type == GDK_BUTTON_RELEASE)
        aEventType = "BUTTON_RELEASE";

    g_info("lok_dialog_floating_win_signal_button (type: %s): %d, %d (in twips: %d, %d)",
           aEventType.c_str(),
           static_cast<int>(pEvent->x), static_cast<int>(pEvent->y),
           static_cast<int>(o3tl::toTwips(pEvent->x, o3tl::Length::px)),
           static_cast<int>(o3tl::toTwips(pEvent->y, o3tl::Length::px)));

    switch (pEvent->type)
    {
    case GDK_BUTTON_PRESS:
    {
        int nCount = 1;
        if ((pEvent->time - priv->m_nChildLastButtonPressTime) < 250)
            nCount++;
        priv->m_nChildLastButtonPressTime = pEvent->time;
        int nEventButton = 0;
        switch (pEvent->button)
        {
        case 1:
            nEventButton = MOUSE_LEFT;
            break;
        case 2:
            nEventButton = MOUSE_MIDDLE;
            break;
        case 3:
            nEventButton = MOUSE_RIGHT;
            break;
        }
        priv->m_nChildLastButtonPressed = nEventButton;
        pDocument->pClass->postWindowMouseEvent(pDocument,
                                                priv->m_nChildId,
                                                LOK_MOUSEEVENT_MOUSEBUTTONDOWN,
                                                (pEvent->x),
                                                (pEvent->y),
                                                nCount,
                                                nEventButton,
                                                priv->m_nChildKeyModifier);

        break;
    }
    case GDK_BUTTON_RELEASE:
    {
        int nCount = 1;
        if ((pEvent->time - priv->m_nChildLastButtonReleaseTime) < 250)
            nCount++;
        priv->m_nChildLastButtonReleaseTime = pEvent->time;
        int nEventButton = 0;
        switch (pEvent->button)
        {
        case 1:
            nEventButton = MOUSE_LEFT;
            break;
        case 2:
            nEventButton = MOUSE_MIDDLE;
            break;
        case 3:
            nEventButton = MOUSE_RIGHT;
            break;
        }
        priv->m_nChildLastButtonPressed = nEventButton;
        pDocument->pClass->postWindowMouseEvent(pDocument,
                                                priv->m_nChildId,
                                                LOK_MOUSEEVENT_MOUSEBUTTONUP,
                                                (pEvent->x),
                                                (pEvent->y),
                                                nCount,
                                                nEventButton,
                                                priv->m_nChildKeyModifier);
        break;
    }
    default:
        break;
    }
    return FALSE;
}

static gboolean
gtv_lok_dialog_floating_win_signal_motion(GtkWidget* /*pDialogDrawingArea*/, GdkEventButton* pEvent, gpointer userdata)
{
    GtvLokDialog* pDialog = GTV_LOK_DIALOG(userdata);
    GtvLokDialogPrivate* priv = getPrivate(pDialog);

    GtvApplicationWindow* window = GTV_APPLICATION_WINDOW(gtk_window_get_transient_for(GTK_WINDOW(pDialog)));
    LibreOfficeKitDocument* pDocument = lok_doc_view_get_document(LOK_DOC_VIEW(window->lokdocview));

    g_info("lok_dialog_floating_win_signal_motion: %d, %d (in twips: %d, %d)",
           static_cast<int>(pEvent->x), static_cast<int>(pEvent->y),
           static_cast<int>(o3tl::toTwips(pEvent->x, o3tl::Length::px)),
           static_cast<int>(o3tl::toTwips(pEvent->y, o3tl::Length::px)));

    pDocument->pClass->postWindowMouseEvent(pDocument,
                                            priv->m_nChildId,
                                            LOK_MOUSEEVENT_MOUSEMOVE,
                                            (pEvent->x),
                                            (pEvent->y),
                                            1,
                                            priv->m_nChildLastButtonPressed,
                                            priv->m_nChildKeyModifier);

    return FALSE;
}

// Public methods below

void gtv_lok_dialog_invalidate(GtvLokDialog* dialog, const GdkRectangle& aRectangle)
{
    GtvLokDialogPrivate* priv = getPrivate(dialog);
    if (aRectangle.width != 0 && aRectangle.height != 0)
        gtk_widget_queue_draw_area(priv->pDialogDrawingArea, aRectangle.x, aRectangle.y, aRectangle.width, aRectangle.height);
    else
        gtk_widget_queue_draw(priv->pDialogDrawingArea);
}

// checks if we are the parent of given childId
gboolean gtv_lok_dialog_is_parent_of(GtvLokDialog* dialog, guint childId)
{
    GtvLokDialogPrivate* priv = getPrivate(dialog);

    return priv->m_nChildId == childId;
}

void gtv_lok_dialog_child_create(GtvLokDialog* dialog, guint childId, guint nX, guint nY, guint width, guint height)
{
    GtvLokDialogPrivate* priv = getPrivate(dialog);

    g_debug("Dialog [ %d ] child window [ %d]  being created, with dimensions [%dx%d]@(%d,%d)", priv->dialogid, childId, width, height, nX, nY);
    priv->pFloatingWin = gtk_window_new(GTK_WINDOW_POPUP);
    priv->m_nChildId = childId;
    priv->m_nChildWidth = width;
    priv->m_nChildHeight = height;
    GtkWidget* pDrawingArea = gtk_drawing_area_new();
    gtk_container_add(GTK_CONTAINER(priv->pFloatingWin), pDrawingArea);

    gtk_window_set_transient_for(GTK_WINDOW(priv->pFloatingWin), GTK_WINDOW(dialog));
    gtk_window_set_destroy_with_parent(GTK_WINDOW(priv->pFloatingWin), true);

    gtk_widget_add_events(pDrawingArea,
                          GDK_BUTTON_PRESS_MASK
                          |GDK_POINTER_MOTION_MASK
                          |GDK_BUTTON_RELEASE_MASK
                          |GDK_BUTTON_MOTION_MASK);

    g_signal_connect(G_OBJECT(pDrawingArea), "draw", G_CALLBACK(gtv_lok_dialog_floating_win_draw), dialog);
    g_signal_connect(G_OBJECT(pDrawingArea), "button-press-event", G_CALLBACK(gtv_lok_dialog_floating_win_signal_button), dialog);
    g_signal_connect(G_OBJECT(pDrawingArea), "button-release-event", G_CALLBACK(gtv_lok_dialog_floating_win_signal_button), dialog);
    g_signal_connect(G_OBJECT(pDrawingArea), "motion-notify-event", G_CALLBACK(gtv_lok_dialog_floating_win_signal_motion), dialog);

    gtk_widget_set_size_request(priv->pFloatingWin, 1, 1);
    gtk_window_set_type_hint(GTK_WINDOW(priv->pFloatingWin), GDK_WINDOW_TYPE_HINT_POPUP_MENU);
    gtk_window_set_screen(GTK_WINDOW(priv->pFloatingWin), gtk_window_get_screen(GTK_WINDOW(dialog)));

    gtk_widget_show_all(priv->pFloatingWin);
    gtk_window_present(GTK_WINDOW(priv->pFloatingWin));
    gtk_widget_grab_focus(pDrawingArea);

    // Get the root coords of our new floating window
    GdkWindow* pGdkWin = gtk_widget_get_window(GTK_WIDGET(dialog));
    int nrX = 0;
    int nrY = 0;
    gdk_window_get_root_coords(pGdkWin, nX, nY, &nrX, &nrY);
    gtk_window_move(GTK_WINDOW(priv->pFloatingWin), nrX, nrY);
}

void gtv_lok_dialog_child_invalidate(GtvLokDialog* dialog)
{
    GtvLokDialogPrivate* priv = getPrivate(dialog);
    g_debug("Dialog [ %d ] child invalidate request", priv->dialogid);
    gtk_widget_queue_draw(priv->pFloatingWin);
}

void gtv_lok_dialog_child_close(GtvLokDialog* dialog)
{
    g_info("Dialog's floating window close");

    GtvLokDialogPrivate* priv = getPrivate(dialog);
    if (priv->pFloatingWin)
    {
        gtk_widget_destroy(priv->pFloatingWin);
        priv->pFloatingWin = nullptr;
        priv->m_nChildId = 0;
        priv->m_nChildWidth = 0;
        priv->m_nChildHeight = 0;
    }
}

GtkWidget* gtv_lok_dialog_new(LOKDocView* pDocView, guint dialogId, guint width, guint height)
{
    g_debug("Dialog [ %d ] of size: %d x %d created", dialogId, width, height);
    GtkWindow* pWindow = GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(pDocView)));
    return GTK_WIDGET(g_object_new(GTV_TYPE_LOK_DIALOG,
                                   "lokdocview", pDocView,
                                   "dialogid", dialogId,
                                   "width", width,
                                   "height", height,
                                   "title", "LOK Dialog",
                                   "modal", false,
                                   "transient-for", pWindow,
                                   nullptr));
}

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