/* -*- 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 "inspectorhelpwindow.hxx"
#include "modulepcr.hxx"
#include <strings.hrc>


namespace pcr
{

    //= InspectorHelpWindow


    InspectorHelpWindow::InspectorHelpWindow( vcl::Window* _pParent )
        :Window( _pParent, WB_DIALOGCONTROL )
        ,m_aSeparator( VclPtr<FixedLine>::Create(this) )
        ,m_aHelpText( VclPtr<MultiLineEdit>::Create(this, WB_LEFT | WB_READONLY | WB_AUTOVSCROLL) )
        ,m_nMinLines( 3 )
        ,m_nMaxLines( 8 )
    {
        SetBackground();
        SetPaintTransparent(true);
        m_aSeparator->SetText( PcrRes(RID_STR_HELP_SECTION_LABEL) );
        m_aSeparator->SetBackground();
        m_aSeparator->Show();

        m_aHelpText->SetControlBackground( /*m_aSeparator->GetBackground().GetColor() */);
        m_aHelpText->SetBackground();
        m_aHelpText->SetPaintTransparent(true);
        m_aHelpText->Show();
    }

    InspectorHelpWindow::~InspectorHelpWindow()
    {
        disposeOnce();
    }

    void InspectorHelpWindow::dispose()
    {
        m_aSeparator.disposeAndClear();
        m_aHelpText.disposeAndClear();
        vcl::Window::dispose();
    }

    void InspectorHelpWindow::SetText( const OUString& _rStr )
    {
        m_aHelpText->SetText( _rStr );
    }


    void InspectorHelpWindow::SetLimits( sal_Int32 _nMinLines, sal_Int32 _nMaxLines )
    {
        m_nMinLines = _nMinLines;
        m_nMaxLines = _nMaxLines;
    }


    long InspectorHelpWindow::impl_getHelpTextBorderHeight()
    {
        sal_Int32 nTop(0), nBottom(0), nDummy(0);
        m_aHelpText->GetBorder( nDummy, nTop, nDummy, nBottom );
        return nTop + nBottom;
    }


    long InspectorHelpWindow::impl_getSpaceAboveTextWindow()
    {
        Size aSeparatorSize(LogicToPixel(Size(0, 8), MapMode(MapUnit::MapAppFont)));
        Size a3AppFontSize(LogicToPixel(Size(3, 3), MapMode(MapUnit::MapAppFont)));
        return aSeparatorSize.Height() + a3AppFontSize.Height();
    }


    long InspectorHelpWindow::GetMinimalHeightPixel()
    {
        return impl_getMinimalTextWindowHeight() + impl_getSpaceAboveTextWindow();
    }


    long InspectorHelpWindow::impl_getMinimalTextWindowHeight()
    {
        return impl_getHelpTextBorderHeight() + m_aHelpText->GetTextHeight() * m_nMinLines;
    }


    long InspectorHelpWindow::impl_getMaximalTextWindowHeight()
    {
        return impl_getHelpTextBorderHeight() + m_aHelpText->GetTextHeight() * m_nMaxLines;
    }


    long InspectorHelpWindow::GetOptimalHeightPixel()
    {
        // --- calc the height as needed for the mere text window
        long nMinTextWindowHeight = impl_getMinimalTextWindowHeight();
        long nMaxTextWindowHeight = impl_getMaximalTextWindowHeight();

        tools::Rectangle aTextRect( Point( 0, 0 ), m_aHelpText->GetOutputSizePixel() );
        aTextRect = m_aHelpText->GetTextRect( aTextRect, m_aHelpText->GetText(),
            DrawTextFlags::Left | DrawTextFlags::Top | DrawTextFlags::MultiLine | DrawTextFlags::WordBreak );
        long nActTextWindowHeight = impl_getHelpTextBorderHeight() + aTextRect.GetHeight();

        long nOptTextWindowHeight = std::max( nMinTextWindowHeight, std::min( nMaxTextWindowHeight, nActTextWindowHeight ) );

        // --- then add the space above the text window
        return nOptTextWindowHeight + impl_getSpaceAboveTextWindow();
    }


    void InspectorHelpWindow::Resize()
    {
        Size a3AppFont(LogicToPixel(Size(3, 3), MapMode(MapUnit::MapAppFont)));

        tools::Rectangle aPlayground( Point( 0, 0 ), GetOutputSizePixel() );

        tools::Rectangle aSeparatorArea( aPlayground );
        aSeparatorArea.SetBottom( aSeparatorArea.Top() + LogicToPixel(Size(0, 8), MapMode(MapUnit::MapAppFont)).Height() );
        m_aSeparator->SetPosSizePixel( aSeparatorArea.TopLeft(), aSeparatorArea.GetSize() );

        tools::Rectangle aTextArea( aPlayground );
        aTextArea.SetTop( aSeparatorArea.Bottom() + a3AppFont.Height() );
        m_aHelpText->SetPosSizePixel( aTextArea.TopLeft(), aTextArea.GetSize() );
    }


} // namespace pcr


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