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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 .
*/
#include <tchar.h>
#include "previewadapter.hxx"
#include <com/sun/star/ui/dialogs/FilePreviewImageFormats.hpp>
#include <osl/diagnose.h>
#include "dibpreview.hxx"
#include "../misc/WinImplHelper.hxx"
#include <memory>
#include <stdexcept>
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
// An impl class to hide implementation details
// from clients
class CPreviewAdapterImpl
{
public:
CPreviewAdapterImpl(HINSTANCE instance);
virtual ~CPreviewAdapterImpl();
virtual sal_Int32 SAL_CALL getTargetColorDepth();
virtual sal_Int32 SAL_CALL getAvailableWidth();
virtual sal_Int32 SAL_CALL getAvailableHeight();
virtual void SAL_CALL setImage( sal_Int16 aImageFormat, const Any& aImage )
throw (IllegalArgumentException,RuntimeException);
virtual sal_Bool SAL_CALL setShowState(sal_Bool bShowState);
virtual sal_Bool SAL_CALL getShowState();
virtual void SAL_CALL setParent(HWND parent);
virtual HWND SAL_CALL getParent();
// parent notification handler
virtual void SAL_CALL notifyParentShow(sal_Bool bShow);
virtual void SAL_CALL notifyParentSizeChanged();
virtual void SAL_CALL notifyParentWindowPosChanged();
protected:
virtual void SAL_CALL calcRightMargin();
virtual void SAL_CALL rearrangeLayout();
void SAL_CALL initializeActivePreview() throw(std::runtime_error);
HWND SAL_CALL findFileListbox() const;
// member
protected:
HINSTANCE m_Instance;
std::unique_ptr<PreviewBase> m_Preview;
HWND m_FileDialog;
int m_RightMargin;
//prevent copy/assignment
private:
CPreviewAdapterImpl(const CPreviewAdapterImpl&);
CPreviewAdapterImpl& operator=(const CPreviewAdapterImpl&);
};
CPreviewAdapterImpl::CPreviewAdapterImpl(HINSTANCE instance) :
m_Instance(instance),
m_Preview(new PreviewBase()), // create dummy preview (NULL-Object pattern)
m_FileDialog(0),
m_RightMargin(0)
{
}
CPreviewAdapterImpl::~CPreviewAdapterImpl()
{
}
sal_Int32 SAL_CALL CPreviewAdapterImpl::getTargetColorDepth()
{
return m_Preview->getTargetColorDepth();
}
sal_Int32 SAL_CALL CPreviewAdapterImpl::getAvailableWidth()
{
return m_Preview->getAvailableWidth();
}
sal_Int32 SAL_CALL CPreviewAdapterImpl::getAvailableHeight()
{
return m_Preview->getAvailableHeight();
}
void SAL_CALL CPreviewAdapterImpl::setImage( sal_Int16 aImageFormat, const Any& aImage )
throw (IllegalArgumentException,RuntimeException)
{
m_Preview->setImage(aImageFormat,aImage);
}
sal_Bool SAL_CALL CPreviewAdapterImpl::setShowState( sal_Bool bShowState )
{
sal_Bool bRet = m_Preview->setShowState(bShowState);
rearrangeLayout();
return bRet;
}
sal_Bool SAL_CALL CPreviewAdapterImpl::getShowState()
{
return m_Preview->getShowState();
}
void SAL_CALL CPreviewAdapterImpl::setParent(HWND parent)
{
OSL_PRECOND(IsWindow(parent),"Invalid FileDialog handle");
m_FileDialog = parent;
calcRightMargin();
}
HWND SAL_CALL CPreviewAdapterImpl::getParent()
{
return m_FileDialog;
}
void SAL_CALL CPreviewAdapterImpl::calcRightMargin()
{
// Calculate the right reference margin
// Assumption:
// 1. This method will be called before the dialog becomes
// visible
// 2. There exist a FileListbox with the id lst1 even
// if it is not visible like under Win2000/XP
// 3. Initially this FileListbox has the appropriate size
// to fit within the FileListbox
// 4. The margin between the right edge of the FileListbox
// and the right edge of the FileDialog will be constant
// even if the size of the dialog changes
HWND flb = GetDlgItem(m_FileDialog,lst1);
OSL_ENSURE(IsWindow(flb),"Filelistbox not found");
RECT rcFlb;
GetWindowRect(flb,&rcFlb);
RECT rcFileDlg;
GetWindowRect(m_FileDialog,&rcFileDlg);
m_RightMargin = rcFileDlg.right - rcFlb.right;
}
void SAL_CALL CPreviewAdapterImpl::notifyParentShow(sal_Bool)
{
}
void SAL_CALL CPreviewAdapterImpl::notifyParentSizeChanged()
{
rearrangeLayout();
}
void SAL_CALL CPreviewAdapterImpl::notifyParentWindowPosChanged()
{
}
void SAL_CALL CPreviewAdapterImpl::rearrangeLayout()
{
// try to get a handle to the filelistbox
// if there is no new-style filelistbox like
// in Win2000/XP there should be at least the
// old listbox, so we take this one
// lst1 - identifies the old-style filelistbox
// lst2 - identifies the new-style filelistbox
// see dlgs.h
HWND flb_new = findFileListbox();
// under Windows NT 4.0 the size of the old
// filelistbox will be used as reference for
// sizing the new filelistbox, so we have
// to change the size of it too
HWND flb_old = GetDlgItem(m_FileDialog,lst1);
RECT rcFlbNew;
GetWindowRect(flb_new,&rcFlbNew);
RECT rcFileDlg;
GetWindowRect(m_FileDialog,&rcFileDlg);
rcFileDlg.right -= m_RightMargin;
// the available area for the filelistbox should be
// the left edge of the filelistbox and the right
// edge of the OK button, we take this as reference
int height = rcFlbNew.bottom - rcFlbNew.top;
int width = rcFileDlg.right - rcFlbNew.left;
HWND prvwnd = m_Preview->getWindowHandle();
// we use GetWindowLong to ask for the visibility
// of the preview window because IsWindowVisible
// only returns true the specified window including
// its parent windows are visible
// this is not the case when we are called in response
// to the WM_SHOWWINDOW message, somehow the WS_VISIBLE
// style bit of the FileOpen dialog must be set after that
// message
LONG lStyle = GetWindowLong(prvwnd,GWL_STYLE);
bool bIsVisible = ((lStyle & WS_VISIBLE) != 0);
int cx = 0;
if (IsWindow(prvwnd) && bIsVisible)
{
cx = width/2;
// resize the filelistbox to the half of the
// available space
SetWindowPos(flb_new,
NULL, 0, 0, cx, height,
SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE);
SetWindowPos(flb_old,
NULL, 0, 0, cx, height,
SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE);
// get the new dimensions of the filelistbox after
// resizing and take the right,top corner as starting
// point for the preview window
GetWindowRect(flb_new,&rcFlbNew);
POINT pt = { rcFlbNew.right, rcFlbNew.top };
ScreenToClient(m_FileDialog,&pt);
// resize the preview window to fit within
// the available space and set the window
// to the top of the z-order else it will
// be invisible
SetWindowPos(prvwnd,
HWND_TOP, pt.x, pt.y, cx, height, SWP_NOACTIVATE);
}
else
{
// resize the filelistbox to the maximum available
// space
cx = rcFileDlg.right - rcFlbNew.left;
// resize the old filelistbox
SetWindowPos(flb_old,
NULL, 0, 0, cx, height,
SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE);
// resize the new filelistbox
SetWindowPos(flb_new,
NULL, 0, 0, cx, height,
SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE );
}
}
void SAL_CALL CPreviewAdapterImpl::initializeActivePreview() throw(std::runtime_error)
{
sal_Bool bShowState = m_Preview->getImaginaryShowState();
sal_Int16 aImgFrmt;
Any aImg;
m_Preview->getImage(aImgFrmt,aImg);
HWND flb = findFileListbox();
PreviewBase* prv = new CDIBPreview(
m_Instance, GetParent(flb), bShowState);
m_Preview.reset(prv);
m_Preview->setImage(aImgFrmt,aImg);
}
HWND SAL_CALL CPreviewAdapterImpl::findFileListbox() const
{
// try to get a handle to the filelistbox
// if there is no new-style filelistbox like
// in Win2000/XP there should be at least the
// old listbox, so we take this one
// lst1 - identifies the old-style filelistbox
// lst2 - identifies the new-style filelistbox
// see dlgs.h
HWND flb = GetDlgItem(m_FileDialog,lst2);
if (!IsWindow(flb))
flb = GetDlgItem(m_FileDialog,lst1);
return flb;
}
// Implementation for Windows 95/NT/ME/2000/XP
// because:
class CWin95NTPreviewAdapterImpl : public CPreviewAdapterImpl
{
public:
CWin95NTPreviewAdapterImpl(HINSTANCE instance);
virtual void SAL_CALL notifyParentShow(sal_Bool bShow);
};
CWin95NTPreviewAdapterImpl::CWin95NTPreviewAdapterImpl(HINSTANCE instance) :
CPreviewAdapterImpl(instance)
{
}
void SAL_CALL CWin95NTPreviewAdapterImpl::notifyParentShow(sal_Bool bShow)
{
try
{
if (bShow)
{
initializeActivePreview();
rearrangeLayout();
}
}
catch(std::runtime_error&)
{
}
}
// ctor
CPreviewAdapter::CPreviewAdapter(HINSTANCE instance)
{
m_pImpl.reset(new CWin95NTPreviewAdapterImpl(instance));
}
CPreviewAdapter::~CPreviewAdapter()
{
}
Sequence<sal_Int16> SAL_CALL CPreviewAdapter::getSupportedImageFormats()
{
css::uno::Sequence<sal_Int16> imgFormats(1);
imgFormats[0] = css::ui::dialogs::FilePreviewImageFormats::BITMAP;
return imgFormats;
}
sal_Int32 SAL_CALL CPreviewAdapter::getTargetColorDepth()
{
return m_pImpl->getTargetColorDepth();
}
sal_Int32 SAL_CALL CPreviewAdapter::getAvailableWidth()
{
return m_pImpl->getAvailableWidth();
}
sal_Int32 SAL_CALL CPreviewAdapter::getAvailableHeight()
{
return m_pImpl->getAvailableHeight();
}
void SAL_CALL CPreviewAdapter::setImage( sal_Int16 aImageFormat, const Any& aImage )
throw (IllegalArgumentException, RuntimeException)
{
m_pImpl->setImage(aImageFormat,aImage);
}
sal_Bool SAL_CALL CPreviewAdapter::setShowState( sal_Bool bShowState )
{
return m_pImpl->setShowState(bShowState);
}
sal_Bool SAL_CALL CPreviewAdapter::getShowState()
{
return m_pImpl->getShowState();
}
void SAL_CALL CPreviewAdapter::setParent(HWND parent)
{
m_pImpl->setParent(parent);
}
void SAL_CALL CPreviewAdapter::notifyParentShow(bool bShow)
{
m_pImpl->notifyParentShow(bShow);
}
void SAL_CALL CPreviewAdapter::notifyParentSizeChanged()
{
m_pImpl->notifyParentSizeChanged();
}
void SAL_CALL CPreviewAdapter::notifyParentWindowPosChanged()
{
m_pImpl->notifyParentWindowPosChanged();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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