PreviewRenderer.hxx

Go to the documentation of this file.

/* -*- 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 .
 */
 
#pragma once
 
#include <vcl/image.hxx>
#include <memory>
 
#include <svl/lstner.hxx>
 
class SdPage;
class VirtualDevice;
 
namespace sd {
 
class DrawDocShell;
class DrawView;
 
class PreviewRenderer final
    : public SfxListener
{
public:
    PreviewRenderer(const bool bPaintFrame = true);
 
    virtual ~PreviewRenderer() override;
 
    Image RenderPage (
        const SdPage* pPage,
        const sal_Int32 nWidth);
 
    Image RenderPage (
        const SdPage* pPage,
        const Size aPreviewPixelSize,
        const bool bObeyHighContrastMode,
        const bool bDisplayPresentationObjects = true);
 
    Image RenderSubstitution (
        const Size& rPreviewPixelSize,
        const OUString& sSubstitutionText);
 
    Image ScaleBitmap (
        const BitmapEx& rBitmap,
        int nWidth);
 
protected:
    virtual void Notify(SfxBroadcaster& rBC, const SfxHint& rHint) override;
 
private:
    ScopedVclPtr<VirtualDevice> mpPreviewDevice;
    ::std::unique_ptr<DrawView> mpView;
    DrawDocShell* mpDocShellOfView;
    const Color maFrameColor;
    const bool mbHasFrame;
    static const int snSubstitutionTextSize;
    // Width of the frame that is painted around the preview.
    static const int snFrameWidth;
 
    bool Initialize (
        const SdPage* pPage,
        const Size& rPixelSize,
        const bool bObeyHighContrastMode);
    void PaintPage (
        const SdPage* pPage,
        const bool bDisplayPresentationObjects);
    void PaintSubstitutionText (const OUString& rSubstitutionText);
    void PaintFrame();
 
    void SetupOutputSize (const SdPage& rPage, const Size& rPixelSize);
 
    void ProvideView (DrawDocShell* pDocShell);
};
 
} // end of namespace ::sd
 
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */