/* -*- 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/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#ifndef INCLUDED_SVX_SDRPAINTWINDOW_HXX
#define INCLUDED_SVX_SDRPAINTWINDOW_HXX

#include <rtl/ref.hxx>
#include <vcl/virdev.hxx>
#include <svx/svxdllapi.h>
#include <memory>

class SdrPaintView;
namespace sdr::overlay { class OverlayManager; }


#ifdef _MSC_VER // broken msvc template instantiation
#include <svx/sdr/overlay/overlaymanager.hxx>
#endif

/// paint the transparent children of rWin that overlap rPixelRect
/// (for example, transparent form controls like check boxes)
void SVXCORE_DLLPUBLIC
PaintTransparentChildren(vcl::Window const & rWindow, tools::Rectangle const& rPixelRect);

class SdrPreRenderDevice
{
    // The original OutputDevice
    VclPtr<OutputDevice>   mpOutputDevice;

    // The VirtualDevice for PreRendering
    VclPtr<VirtualDevice>  mpPreRenderDevice;

public:
    explicit SdrPreRenderDevice(OutputDevice& rOriginal);
    ~SdrPreRenderDevice();

    void PreparePreRenderDevice();
    void OutputPreRenderDevice(const vcl::Region& rExpandedRegion);

    OutputDevice& GetPreRenderDevice() { return *mpPreRenderDevice; }
};

class SVXCORE_DLLPUBLIC SdrPaintWindow
{
private:
    // the OutputDevice this window represents
    VclPtr<OutputDevice>                                mpOutputDevice;

    /// In case mrOutputDevice is a buffer for a vcl::Window, this is the window.
    VclPtr<vcl::Window>                                 mpWindow;

    // the SdrPaintView this window belongs to
    SdrPaintView&                                       mrPaintView;

    // the new OverlayManager for the new OverlayObjects. Test add here, will
    // replace the IAOManager as soon as it works.
    rtl::Reference< sdr::overlay::OverlayManager >    mxOverlayManager;

    // The PreRenderDevice for PreRendering
    std::unique_ptr<SdrPreRenderDevice>               mpPreRenderDevice;

    // The RedrawRegion used for rendering
    vcl::Region                                              maRedrawRegion;

    // #i72889# flag if this is only a temporary target for repaint, default is false
    bool                                                mbTemporaryTarget : 1;

    bool                                                mbOutputToWindow : 1;

    // ref to patched
    SdrPaintWindow*                                     mpPatched;

    // helpers
    void impCreateOverlayManager();

public:
    SdrPaintWindow(SdrPaintView& rNewPaintView, OutputDevice& rOut, vcl::Window* pWindow = nullptr);
    ~SdrPaintWindow();

    // allow reference to patched, see patchPaintWindow/unpatchPaintWindow
    void setPatched(SdrPaintWindow* pPaintWindow) { mpPatched = pPaintWindow; }
    SdrPaintWindow* getPatched() const { return mpPatched; }

    // data read accesses
    OutputDevice& GetOutputDevice() const { return *mpOutputDevice; }
    vcl::Window* GetWindow() const { return mpWindow; }

    // OVERLAYMANAGER
    rtl::Reference< sdr::overlay::OverlayManager > const & GetOverlayManager() const;

    // #i73602# add flag if buffer shall be used
    void DrawOverlay(const vcl::Region& rRegion);

    // calculate visible area and return
    tools::Rectangle GetVisibleArea() const;

    // Is OutDev a printer?
    bool OutputToPrinter() const { return (OUTDEV_PRINTER == mpOutputDevice->GetOutDevType()); }

    // Is OutDev a window?
    bool OutputToWindow() const { return mbOutputToWindow; }

    void SetOutputToWindow(bool bOutputToWindow) { mbOutputToWindow = bOutputToWindow; }

    // Is OutDev a recording MetaFile?
    bool OutputToRecordingMetaFile() const;

    // prepare PreRendering (evtl.)
    void PreparePreRenderDevice();
    void OutputPreRenderDevice(const vcl::Region& rExpandedRegion);
    SdrPreRenderDevice* GetPreRenderDevice() const { return mpPreRenderDevice.get(); }

    // RedrawRegion
    const vcl::Region& GetRedrawRegion() const { return maRedrawRegion;}
    void SetRedrawRegion(const vcl::Region& rNew);

    // #i72889# read/write access to TemporaryTarget
    bool getTemporaryTarget() const { return mbTemporaryTarget; }
    void setTemporaryTarget(bool bNew) { mbTemporaryTarget = bNew; }

    // #i72889# get target output device, take into account output buffering
    OutputDevice& GetTargetOutputDevice() { if(mpPreRenderDevice) return mpPreRenderDevice->GetPreRenderDevice(); else return *mpOutputDevice; }
};

#endif // INCLUDED_SVX_SDRPAINTWINDOW_HXX

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