/* -*- 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/.

 */

#pragma once

#include <comphelper/OAccessible.hxx>

#include <vcl/weld/Builder.hxx>

#include <vcl/weld/weld.hxx>

class InputContext;

namespace weld

{

class VCL_DLLPUBLIC CustomWidgetController

{

private:

    Size m_aSize;

    weld::DrawingArea* m_pDrawingArea;

    DECL_LINK(DragBeginHdl, weld::DrawingArea&, bool);

public:

    virtual rtl::Reference<comphelper::OAccessible> CreateAccessible() { return {}; }

    // rRect is in Logical units rather than Pixels

    virtual void Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect) = 0;

    virtual void Resize() { Invalidate(); }

    virtual bool MouseButtonDown(const MouseEvent&) { return false; }

    virtual bool MouseMove(const MouseEvent&) { return false; }

    virtual bool MouseButtonUp(const MouseEvent&) { return false; }

    virtual void GetFocus() {}

    virtual void LoseFocus() {}

    virtual void StyleUpdated() { Invalidate(); }

    virtual bool Command(const CommandEvent&) { return false; }

    virtual bool KeyInput(const KeyEvent&) { return false; }

    virtual bool KeyUp(const KeyEvent&) { return false; }

    virtual tools::Rectangle GetFocusRect() { return tools::Rectangle(); }

    virtual FactoryFunction GetUITestFactory() const { return nullptr; }

    virtual OUString RequestHelp(tools::Rectangle&) { return OUString(); }

    OUString GetHelpText() const { return m_pDrawingArea->get_tooltip_text(); }

    Size const& GetOutputSizePixel() const { return m_aSize; }

    void SetOutputSizePixel(const Size& rSize) { m_aSize = rSize; }

    virtual void SetDrawingArea(weld::DrawingArea* pDrawingArea) { m_pDrawingArea = pDrawingArea; }

    weld::DrawingArea* GetDrawingArea() const { return m_pDrawingArea; }

    void Invalidate()

    {

        if (!m_pDrawingArea)

            return;

        m_pDrawingArea->queue_draw();

    }

    void Invalidate(const tools::Rectangle& rRect)

    {

        if (!m_pDrawingArea)

            return;

        m_pDrawingArea->queue_draw_area(rRect.Left(), rRect.Top(), rRect.GetWidth(),

                                        rRect.GetHeight());

    }

    virtual void Show() { m_pDrawingArea->show(); }

    virtual void Hide() { m_pDrawingArea->hide(); }

    void SetCursor(void* pData) { m_pDrawingArea->set_cursor_data(pData); }

    void GrabFocus() { m_pDrawingArea->grab_focus(); }

    bool HasFocus() const { return m_pDrawingArea->has_focus(); }

    bool HasChildFocus() const { return m_pDrawingArea->has_child_focus(); }

    bool IsVisible() const { return m_pDrawingArea->get_visible(); }

    bool IsReallyVisible() const { return m_pDrawingArea->is_visible(); }

    bool IsEnabled() const { return m_pDrawingArea->get_sensitive(); }

    void Enable() const { m_pDrawingArea->set_sensitive(true); }

    void Disable() const { m_pDrawingArea->set_sensitive(false); }

    int GetTextHeight() const { return m_pDrawingArea->get_text_height(); }

    int GetTextWidth(const OUString& rText) const

    {

        return m_pDrawingArea->get_pixel_size(rText).Width();

    }

    OUString GetAccessibleName() const { return m_pDrawingArea->get_accessible_name(); }

    OUString GetAccessibleDescription() const

    {

        return m_pDrawingArea->get_accessible_description();

    }

    OUString GetAccessibleId() const

    {

        if (m_pDrawingArea)

            return m_pDrawingArea->get_accessible_id();

        return OUString();

    }

    void CaptureMouse() { m_pDrawingArea->grab_mouse(); }

    bool IsMouseCaptured() const { return m_pDrawingArea->has_mouse_grab(); }

    Point GetPointerPosPixel() const { return m_pDrawingArea->get_pointer_position(); }

    void EnableRTL(bool bEnable) { m_pDrawingArea->set_direction(bEnable); }

    bool IsRTLEnabled() const { return m_pDrawingArea->get_direction(); }

    void ReleaseMouse() { m_pDrawingArea->release_mouse(); }

    void SetPointer(PointerStyle ePointerStyle) { m_pDrawingArea->set_cursor(ePointerStyle); }

    void SetHelpId(const OUString& rHelpId) { m_pDrawingArea->set_help_id(rHelpId); }

    void SetAccessibleName(const OUString& rName) { m_pDrawingArea->set_accessible_name(rName); }

    void SetInputContext(const InputContext& rInputContext)

    {

        m_pDrawingArea->set_input_context(rInputContext);

    }

    void SetCursorRect(const tools::Rectangle& rCursorRect, int nExtTextInputWidth)

    {

        m_pDrawingArea->im_context_set_cursor_location(rCursorRect, nExtTextInputWidth);

    }

    virtual int GetSurroundingText(OUString& /*rSurrounding*/) { return -1; }

    virtual bool DeleteSurroundingText(const Selection& /*rRange*/) { return false; }

    css::uno::Reference<css::datatransfer::dnd::XDropTarget> GetDropTarget()

    {

        return m_pDrawingArea->get_drop_target();

    }

    css::uno::Reference<css::datatransfer::clipboard::XClipboard> GetClipboard() const

    {

        return m_pDrawingArea->get_clipboard();

    }

    void SetDragDataTransferable(rtl::Reference<TransferDataContainer>& rTransferable,

                                 sal_uInt8 eDNDConstants)

    {

        m_pDrawingArea->enable_drag_source(rTransferable, eDNDConstants);

        m_pDrawingArea->connect_drag_begin(LINK(this, CustomWidgetController, DragBeginHdl));

    }

Unexecuted instantiation: weld::CustomWidgetController::SetDragDataTransferable(rtl::Reference<TransferDataContainer>&, unsigned char)

Unexecuted instantiation: weld::CustomWidgetController::SetDragDataTransferable(rtl::Reference<TransferDataContainer>&, unsigned char)

    // return true to disallow drag, false to allow

    virtual bool StartDrag() { return false; }

    void set_size_request(int nWidth, int nHeight)

    {

        m_pDrawingArea->set_size_request(nWidth, nHeight);

    }

    void queue_resize()

    {

        if (!m_pDrawingArea)

            return;

        m_pDrawingArea->queue_resize();

    }

    CustomWidgetController()

        : m_pDrawingArea(nullptr)

    {

    }

    virtual ~CustomWidgetController();

    CustomWidgetController(CustomWidgetController const&) = default;

    CustomWidgetController(CustomWidgetController&&) = default;

    CustomWidgetController& operator=(CustomWidgetController const&) = default;

    CustomWidgetController& operator=(CustomWidgetController&&) = default;

};

class VCL_DLLPUBLIC CustomWeld final

{

private:

    weld::CustomWidgetController& m_rWidgetController;

    std::unique_ptr<weld::DrawingArea> m_xDrawingArea;

    DECL_DLLPRIVATE_LINK(DoResize, const Size& rSize, void);

    DECL_DLLPRIVATE_LINK(DoPaint, weld::DrawingArea::draw_args, void);

    DECL_DLLPRIVATE_LINK(DoMouseButtonDown, const MouseEvent&, bool);

    DECL_DLLPRIVATE_LINK(DoMouseMove, const MouseEvent&, bool);

    DECL_DLLPRIVATE_LINK(DoMouseButtonUp, const MouseEvent&, bool);

    DECL_DLLPRIVATE_LINK(DoGetFocus, weld::Widget&, void);

    DECL_DLLPRIVATE_LINK(DoLoseFocus, weld::Widget&, void);

    DECL_DLLPRIVATE_LINK(DoKeyPress, const KeyEvent&, bool);

    DECL_DLLPRIVATE_LINK(DoKeyRelease, const KeyEvent&, bool);

    DECL_DLLPRIVATE_LINK(DoFocusRect, weld::Widget&, tools::Rectangle);

    DECL_DLLPRIVATE_LINK(DoCommand, const CommandEvent&, bool);

    DECL_DLLPRIVATE_LINK(DoStyleUpdated, weld::Widget&, void);

    DECL_DLLPRIVATE_LINK(DoRequestHelp, tools::Rectangle&, OUString);

    DECL_DLLPRIVATE_LINK(DoGetSurrounding, OUString&, int);

    DECL_DLLPRIVATE_LINK(DoDeleteSurrounding, const Selection&, bool);

public:

    CustomWeld(weld::Builder& rBuilder, const OUString& rDrawingId,

               CustomWidgetController& rWidgetController);

    void queue_draw() { m_xDrawingArea->queue_draw(); }

    void queue_draw_area(int x, int y, int width, int height)

    {

        m_xDrawingArea->queue_draw_area(x, y, width, height);

    }

    void set_size_request(int nWidth, int nHeight)

    {

        m_xDrawingArea->set_size_request(nWidth, nHeight);

    }

    void show() { m_xDrawingArea->show(); }

    void hide() { m_xDrawingArea->hide(); }

    void set_margin_top(int nMargin) { m_xDrawingArea->set_margin_top(nMargin); }

    void set_margin_bottom(int nMargin) { m_xDrawingArea->set_margin_bottom(nMargin); }

    void set_sensitive(bool bSensitive) { m_xDrawingArea->set_sensitive(bSensitive); }

    bool get_sensitive() const { return m_xDrawingArea->get_sensitive(); }

    bool get_visible() const { return m_xDrawingArea->get_visible(); }

    void set_visible(bool bVisible) { m_xDrawingArea->set_visible(bVisible); }

    void set_help_id(const OUString& rHelpId) { m_xDrawingArea->set_help_id(rHelpId); }

    void set_tooltip_text(const OUString& rTip) { m_xDrawingArea->set_tooltip_text(rTip); }

};

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */