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/* -*- 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_FPICKER_SOURCE_WIN32_FILEPICKER_DIBPREVIEW_HXX
#define INCLUDED_FPICKER_SOURCE_WIN32_FILEPICKER_DIBPREVIEW_HXX
#include "previewbase.hxx"
#include <com/sun/star/uno/Sequence.hxx>
#include <osl/mutex.hxx>
#if defined _MSC_VER
#pragma warning(push, 1)
#endif
#include <windows.h>
#if defined _MSC_VER
#pragma warning(pop)
#endif
// A very simple wrapper for a window that does
// display DIBs.
// Maybe it would be better and more extensible
// to create another class that is responsible
// for rendering a specific image format into
// the area of the window, but for our purpose
// it's enough to go the simple way - KISS.
class CDIBPreview : public PreviewBase
{
public:
// ctor
CDIBPreview(HINSTANCE instance,HWND parent,bool bShowWindow = false);
// dtor
virtual ~CDIBPreview( ) override;
// preview interface implementation
virtual sal_Int32 SAL_CALL getTargetColorDepth()
throw (css::uno::RuntimeException) override;
virtual sal_Int32 SAL_CALL getAvailableWidth()
throw (css::uno::RuntimeException) override;
virtual sal_Int32 SAL_CALL getAvailableHeight()
throw (css::uno::RuntimeException) override;
virtual void SAL_CALL setImage(sal_Int16 aImageFormat, const css::uno::Any& aImage)
throw (css::lang::IllegalArgumentException, css::uno::RuntimeException) override;
virtual bool SAL_CALL setShowState(bool bShowState)
throw (css::uno::RuntimeException) override;
virtual bool SAL_CALL getShowState()
throw (css::uno::RuntimeException) override;
virtual HWND SAL_CALL getWindowHandle() const override;
private:
virtual void SAL_CALL onPaint( HWND hWnd, HDC hDC );
ATOM SAL_CALL RegisterDibPreviewWindowClass( );
void SAL_CALL UnregisterDibPreviewWindowClass( );
static LRESULT CALLBACK WndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
private:
HINSTANCE m_Instance;
HWND m_Hwnd;
css::uno::Sequence<sal_Int8> m_Image;
osl::Mutex m_PaintLock;
// the preview window class has to be registered only
// once per process, so multiple instance of this class
// share the registered window class
static ATOM s_ClassAtom;
static osl::Mutex s_Mutex;
static sal_Int32 s_RegisterDibPreviewWndCount;
// prevent copy and assignment
private:
CDIBPreview(const CDIBPreview&);
CDIBPreview& operator=(const CDIBPreview&);
};
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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