/**************************************************************
 * 
 * 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
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/


#include "precompiled_sw.hxx"

#include <AnnotationMenuButton.hxx>

#include <annotation.hrc>
#include <app.hrc>
#include <access.hrc>

#include <unotools/useroptions.hxx>

#include <vcl/svapp.hxx>
#include <vcl/menu.hxx>
#include <vcl/decoview.hxx>
#include <vcl/gradient.hxx>

#include <cmdid.h>
#include <SidebarWin.hxx>

namespace sw { namespace annotation {

Color ColorFromAlphaColor( const sal_uInt8 aTransparency,
                           const Color &aFront,
                           const Color &aBack )
{
    return Color((sal_uInt8)(aFront.GetRed()    * aTransparency/(double)255 + aBack.GetRed()    * (1-aTransparency/(double)255)),
                 (sal_uInt8)(aFront.GetGreen()  * aTransparency/(double)255 + aBack.GetGreen()  * (1-aTransparency/(double)255)),
                 (sal_uInt8)(aFront.GetBlue()   * aTransparency/(double)255 + aBack.GetBlue()   * (1-aTransparency/(double)255)));
}

AnnotationMenuButton::AnnotationMenuButton( sw::sidebarwindows::SwSidebarWin& rSidebarWin )
    : MenuButton( &rSidebarWin )
    , mrSidebarWin( rSidebarWin )
{
    AddEventListener( LINK( &mrSidebarWin, sw::sidebarwindows::SwSidebarWin, WindowEventListener ) );

    SetAccessibleName( SW_RES( STR_ACCESS_ANNOTATION_BUTTON_NAME ) );
    SetAccessibleDescription( SW_RES( STR_ACCESS_ANNOTATION_BUTTON_DESC ) );
    SetQuickHelpText( GetAccessibleDescription() );
}

AnnotationMenuButton::~AnnotationMenuButton()
{
    RemoveEventListener( LINK( &mrSidebarWin, sw::sidebarwindows::SwSidebarWin, WindowEventListener ) );
}

void AnnotationMenuButton::Select()
{
    mrSidebarWin.ExecuteCommand( GetCurItemId() );
}

void AnnotationMenuButton::MouseButtonDown( const MouseEvent& rMEvt )
{
    PopupMenu* pButtonPopup( GetPopupMenu() );
    if ( mrSidebarWin.IsReadOnly() )
    {
        pButtonPopup->EnableItem( FN_REPLY, false );
        pButtonPopup->EnableItem( FN_DELETE_COMMENT, false );
        pButtonPopup->EnableItem( FN_DELETE_NOTE_AUTHOR, false );
        pButtonPopup->EnableItem( FN_DELETE_ALL_NOTES, false );
    }
    else
    {
        pButtonPopup->EnableItem( FN_DELETE_COMMENT, !mrSidebarWin.IsProtected() );
        pButtonPopup->EnableItem( FN_DELETE_NOTE_AUTHOR, true );
        pButtonPopup->EnableItem( FN_DELETE_ALL_NOTES, true );
    }

    if ( mrSidebarWin.IsProtected() )
    {
        pButtonPopup->EnableItem( FN_REPLY, false );
    }
    else
    {
        SvtUserOptions aUserOpt;
        String sAuthor;
        if ( !(sAuthor = aUserOpt.GetFullName()).Len() )
        {
            if ( !(sAuthor = aUserOpt.GetID()).Len() )
            {
                sAuthor = String( SW_RES( STR_REDLINE_UNKNOWN_AUTHOR ));
            }
        }
        // do not allow to reply to ourself and no answer possible if this note is in a protected section
        if ( sAuthor == mrSidebarWin.GetAuthor() )
        {
            pButtonPopup->EnableItem( FN_REPLY, false );
        }
        else
        {
            pButtonPopup->EnableItem( FN_REPLY, true );
        }
    }

    MenuButton::MouseButtonDown( rMEvt );
}

void AnnotationMenuButton::Paint( const Rectangle& /*rRect*/ )
{
    if ( Application::GetSettings().GetStyleSettings().GetHighContrastMode() )
        SetFillColor(COL_BLACK);
    else
        SetFillColor( mrSidebarWin.ColorDark() );
    SetLineColor();
    const Rectangle aRect( Rectangle( Point( 0, 0 ), PixelToLogic( GetSizePixel() ) ) );
    DrawRect( aRect );

    if ( Application::GetSettings().GetStyleSettings().GetHighContrastMode())
    {
        //draw rect around button
        SetFillColor(COL_BLACK);
        SetLineColor(COL_WHITE);
    }
    else
    {
        //draw button
        Gradient aGradient;
        if ( IsMouseOver() )
            aGradient = Gradient( GRADIENT_LINEAR,
                                  ColorFromAlphaColor( 80, mrSidebarWin.ColorAnchor(), mrSidebarWin.ColorDark() ),
                                  ColorFromAlphaColor( 15, mrSidebarWin.ColorAnchor(), mrSidebarWin.ColorDark() ));
        else
            aGradient = Gradient( GRADIENT_LINEAR,
                                  ColorFromAlphaColor( 15, mrSidebarWin.ColorAnchor(), mrSidebarWin.ColorDark() ),
                                  ColorFromAlphaColor( 80, mrSidebarWin.ColorAnchor(), mrSidebarWin.ColorDark() ));
        DrawGradient( aRect, aGradient );

        //draw rect around button
        SetFillColor();
        SetLineColor( ColorFromAlphaColor( 90, mrSidebarWin.ColorAnchor(), mrSidebarWin.ColorDark() ));
    }
    DrawRect( aRect );

    if ( mrSidebarWin.IsPreview() )
    {
        Font aOldFont( mrSidebarWin.GetFont() );
        Font aFont(aOldFont);
        Color aCol( COL_BLACK);
        aFont.SetColor( aCol );
        aFont.SetHeight(200);
        aFont.SetWeight(WEIGHT_MEDIUM);
        SetFont( aFont );
        DrawText(  aRect ,
                   rtl::OUString::createFromAscii("Edit Note"),
                   TEXT_DRAW_CENTER );
        SetFont( aOldFont );
    }
    else
    {
        Rectangle aSymbolRect( aRect );
        // 25% distance to the left and right button border
        const long nBorderDistanceLeftAndRight = ((aSymbolRect.GetWidth()*250)+500)/1000;
        aSymbolRect.Left()+=nBorderDistanceLeftAndRight;
        aSymbolRect.Right()-=nBorderDistanceLeftAndRight;
        // 40% distance to the top button border
        const long nBorderDistanceTop = ((aSymbolRect.GetHeight()*400)+500)/1000;
        aSymbolRect.Top()+=nBorderDistanceTop;
        // 15% distance to the bottom button border
        const long nBorderDistanceBottom = ((aSymbolRect.GetHeight()*150)+500)/1000;
        aSymbolRect.Bottom()-=nBorderDistanceBottom;
        DecorationView aDecoView( this );
        aDecoView.DrawSymbol( aSymbolRect, SYMBOL_SPIN_DOWN,
                              ( Application::GetSettings().GetStyleSettings().GetHighContrastMode()
                                ? Color( COL_WHITE )
                                : Color( COL_BLACK ) ) );
    }
}

void AnnotationMenuButton::KeyInput( const KeyEvent& rKeyEvt )
{
    const KeyCode& rKeyCode = rKeyEvt.GetKeyCode();
    const sal_uInt16 nKey = rKeyCode.GetCode();
    if ( nKey == KEY_TAB )
    {
        mrSidebarWin.ActivatePostIt();
        mrSidebarWin.GrabFocus();
    }
    else
    {
        MenuButton::KeyInput( rKeyEvt );
    }
}

} } // end of namespace sw::annotation