LCOV - code coverage report
Current view: top level - libreoffice/svtools/source/toolpanel - tabbargeometry.cxx (source / functions) Hit Total Coverage
Test: libreoffice_filtered.info Lines: 0 121 0.0 %
Date: 2012-12-27 Functions: 0 14 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : 
      21             : #include "tabbargeometry.hxx"
      22             : 
      23             : #include <basegfx/range/b2drange.hxx>
      24             : #include <basegfx/matrix/b2dhommatrix.hxx>
      25             : #include <basegfx/numeric/ftools.hxx>
      26             : 
      27             : #include <vcl/window.hxx>
      28             : 
      29             : #include <algorithm>
      30             : 
      31             : // the width (or height, depending on alignment) of the scroll buttons
      32             : #define BUTTON_FLOW_WIDTH       20
      33             : // the space between the scroll buttons and the items
      34             : #define BUTTON_FLOW_SPACE       2
      35             : // outer space to apply between the tab bar borders and any content. Note that those refer to a "normalized" geometry,
      36             : // i.e. if the tab bar were aligned at the top
      37             : #define OUTER_SPACE_LEFT        2
      38             : #define OUTER_SPACE_TOP         4
      39             : #define OUTER_SPACE_RIGHT       4
      40             : #define OUTER_SPACE_BOTTOM      2
      41             : 
      42             : // outer space to apply between the area for the items, and the actual items. They refer to a normalized geometry.
      43             : #define ITEMS_INSET_LEFT        4
      44             : #define ITEMS_INSET_TOP         3
      45             : #define ITEMS_INSET_RIGHT       4
      46             : #define ITEMS_INSET_BOTTOM      0
      47             : 
      48             : //......................................................................................................................
      49             : namespace svt
      50             : {
      51             : //......................................................................................................................
      52             : 
      53             :     //==================================================================================================================
      54             :     //= helper
      55             :     //==================================================================================================================
      56             :     namespace
      57             :     {
      58             :         //--------------------------------------------------------------------------------------------------------------
      59           0 :         static void lcl_transform( Rectangle& io_rRect, const ::basegfx::B2DHomMatrix& i_rTransformation )
      60             :         {
      61           0 :             ::basegfx::B2DRange aRect( io_rRect.Left(), io_rRect.Top(), io_rRect.Right(), io_rRect.Bottom() );
      62           0 :             aRect.transform( i_rTransformation );
      63           0 :             io_rRect.Left() = long( aRect.getMinX() );
      64           0 :             io_rRect.Top() = long( aRect.getMinY() );
      65           0 :             io_rRect.Right() = long( aRect.getMaxX() );
      66           0 :             io_rRect.Bottom() = long( aRect.getMaxY() );
      67           0 :         }
      68             : 
      69             :         //--------------------------------------------------------------------------------------------------------------
      70             :         /** transforms the given, possible rotated playground,
      71             :         */
      72           0 :         void lcl_rotate( const Rectangle& i_rReference, Rectangle& io_rArea, const bool i_bRight )
      73             :         {
      74             :             // step 1: move the to-be-upper-left corner (left/bottom) of the rectangle to (0,0)
      75           0 :             ::basegfx::B2DHomMatrix aTransformation;
      76             :             aTransformation.translate(
      77           0 :                 i_bRight ? -i_rReference.Left() : -i_rReference.Right(),
      78           0 :                 i_bRight ? -i_rReference.Bottom() : -i_rReference.Top()
      79           0 :             );
      80             : 
      81             :             // step 2: rotate by -90 degrees
      82           0 :             aTransformation.rotate( i_bRight ? +F_PI2 : -F_PI2 );
      83             :                 // note:
      84             :                 // on the screen, the ordinate goes top-down, while basegfx calculates in a system where the
      85             :                 // ordinate goes bottom-up; thus the "wrong" sign before F_PI2 here
      86             : 
      87             :             // step 3: move back to original coordinates
      88           0 :             aTransformation.translate( i_rReference.Left(), i_rReference.Top() );
      89             : 
      90             :             // apply transformation
      91           0 :             lcl_transform( io_rArea, aTransformation );
      92           0 :         }
      93             :     }
      94             : 
      95             :     //------------------------------------------------------------------------------------------------------------------
      96           0 :     void lcl_mirrorHorizontally( const Rectangle& i_rReferenceArea, Rectangle& io_rArea )
      97             :     {
      98           0 :         io_rArea.Left() = i_rReferenceArea.Left() + i_rReferenceArea.Right() - io_rArea.Left();
      99           0 :         io_rArea.Right() = i_rReferenceArea.Left() + i_rReferenceArea.Right() - io_rArea.Right();
     100           0 :         ::std::swap( io_rArea.Left(), io_rArea.Right() );
     101           0 :     }
     102             : 
     103             :     //------------------------------------------------------------------------------------------------------------------
     104           0 :     void lcl_mirrorVertically( const Rectangle& i_rReferenceArea, Rectangle& io_rArea )
     105             :     {
     106           0 :         io_rArea.Top() = i_rReferenceArea.Top() + i_rReferenceArea.Bottom() - io_rArea.Top();
     107           0 :         io_rArea.Bottom() = i_rReferenceArea.Top() + i_rReferenceArea.Bottom() - io_rArea.Bottom();
     108           0 :         ::std::swap( io_rArea.Top(), io_rArea.Bottom() );
     109           0 :     }
     110             : 
     111             :     //==================================================================================================================
     112             :     //= NormalizedArea
     113             :     //==================================================================================================================
     114             :     //------------------------------------------------------------------------------------------------------------------
     115           0 :     NormalizedArea::NormalizedArea()
     116           0 :         :m_aReference()
     117             :     {
     118           0 :     }
     119             : 
     120             :     //------------------------------------------------------------------------------------------------------------------
     121           0 :     NormalizedArea::NormalizedArea( const Rectangle& i_rReference, const bool i_bIsVertical )
     122           0 :         :m_aReference( i_bIsVertical ? Rectangle( i_rReference.TopLeft(), Size( i_rReference.GetHeight(), i_rReference.GetWidth() ) ) : i_rReference )
     123             :     {
     124           0 :     }
     125             : 
     126             :     //------------------------------------------------------------------------------------------------------------------
     127           0 :     Rectangle NormalizedArea::getTransformed( const Rectangle& i_rArea, const TabAlignment i_eTargetAlignment ) const
     128             :     {
     129           0 :         Rectangle aResult( i_rArea );
     130             : 
     131           0 :         if  (   ( i_eTargetAlignment == TABS_RIGHT )
     132             :             ||  ( i_eTargetAlignment == TABS_LEFT )
     133             :             )
     134             :         {
     135           0 :             lcl_rotate( m_aReference, aResult, true );
     136             : 
     137           0 :             if ( i_eTargetAlignment == TABS_LEFT )
     138             :             {
     139           0 :                 Rectangle aReference( m_aReference );
     140           0 :                 aReference.Transpose();
     141           0 :                 lcl_mirrorHorizontally( aReference, aResult );
     142           0 :             }
     143             :         }
     144             :         else
     145           0 :         if  ( i_eTargetAlignment == TABS_BOTTOM )
     146             :         {
     147           0 :             lcl_mirrorVertically( m_aReference, aResult );
     148             :         }
     149             : 
     150           0 :         return aResult;
     151             :     }
     152             : 
     153             :     //------------------------------------------------------------------------------------------------------------------
     154           0 :     Rectangle NormalizedArea::getNormalized( const Rectangle& i_rArea, const TabAlignment i_eTargetAlignment ) const
     155             :     {
     156           0 :         Rectangle aResult( i_rArea );
     157             : 
     158           0 :         if  (   ( i_eTargetAlignment == TABS_RIGHT )
     159             :             ||  ( i_eTargetAlignment == TABS_LEFT )
     160             :             )
     161             :         {
     162           0 :             Rectangle aReference( m_aReference );
     163           0 :             lcl_rotate( m_aReference, aReference, true );
     164             : 
     165           0 :             if ( i_eTargetAlignment == TABS_LEFT )
     166             :             {
     167           0 :                 lcl_mirrorHorizontally( aReference, aResult );
     168             :             }
     169             : 
     170           0 :             lcl_rotate( aReference, aResult, false );
     171             :         }
     172             :         else
     173           0 :         if  ( i_eTargetAlignment == TABS_BOTTOM )
     174             :         {
     175           0 :             lcl_mirrorVertically( m_aReference, aResult );
     176             :         }
     177           0 :         return aResult;
     178             :     }
     179             : 
     180             :     //==================================================================================================================
     181             :     //= TabBarGeometry
     182             :     //==================================================================================================================
     183             :     //------------------------------------------------------------------------------------------------------------------
     184           0 :     TabBarGeometry::TabBarGeometry( const TabItemContent i_eItemContent )
     185             :         :m_eTabItemContent( i_eItemContent )
     186             :         ,m_aItemsInset()
     187             :         ,m_aButtonBackRect()
     188             :         ,m_aItemsRect()
     189           0 :         ,m_aButtonForwardRect()
     190             :     {
     191           0 :         m_aItemsInset.Left()   = ITEMS_INSET_LEFT;
     192           0 :         m_aItemsInset.Top()    = ITEMS_INSET_TOP;
     193           0 :         m_aItemsInset.Right()  = ITEMS_INSET_RIGHT;
     194           0 :         m_aItemsInset.Bottom() = ITEMS_INSET_BOTTOM;
     195           0 :     }
     196             : 
     197             :     //------------------------------------------------------------------------------------------------------------------
     198           0 :     TabBarGeometry::~TabBarGeometry()
     199             :     {
     200           0 :     }
     201             : 
     202             :     //------------------------------------------------------------------------------------------------------------------
     203           0 :     bool TabBarGeometry::impl_fitItems( ItemDescriptors& io_rItems ) const
     204             :     {
     205           0 :         if ( io_rItems.empty() )
     206             :             // nothing to do, "no items" perfectly fit into any space we have ...
     207           0 :             return true;
     208             : 
     209             :         // the available size
     210           0 :         Size aOutputSize( getItemsRect().GetSize() );
     211             :         // shrunk by the outer space
     212           0 :         aOutputSize.Width() -= m_aItemsInset.Right();
     213           0 :         aOutputSize.Height() -= m_aItemsInset.Bottom();
     214           0 :         const Rectangle aFitInto( Point( 0, 0 ), aOutputSize );
     215             : 
     216           0 :         TabItemContent eItemContent( getItemContent() );
     217           0 :         if ( eItemContent == TABITEM_AUTO )
     218             :         {
     219             :             // the "content modes" to try
     220             :             TabItemContent eTryThis[] =
     221             :             {
     222             :                 TABITEM_IMAGE_ONLY,     // assumed to have the smallest rects
     223             :                 TABITEM_TEXT_ONLY,
     224             :                 TABITEM_IMAGE_AND_TEXT  // assumed to have the largest rects
     225           0 :             };
     226             : 
     227             : 
     228             :             // determine which of the different version fits
     229           0 :             eItemContent = eTryThis[0];
     230           0 :             size_t nTryIndex = 2;
     231           0 :             while ( nTryIndex > 0 )
     232             :             {
     233           0 :                 const Point aBottomRight( io_rItems.rbegin()->GetRect( eTryThis[ nTryIndex ] ).BottomRight() );
     234           0 :                 if ( aFitInto.IsInside( aBottomRight ) )
     235             :                 {
     236           0 :                     eItemContent = eTryThis[ nTryIndex ];
     237             :                     break;
     238             :                 }
     239           0 :                 --nTryIndex;
     240             :             }
     241             :         }
     242             : 
     243             :         // propagate to the items
     244           0 :         for (   ItemDescriptors::iterator item = io_rItems.begin();
     245           0 :                 item != io_rItems.end();
     246             :                 ++item
     247             :             )
     248             :         {
     249           0 :             item->eContent = eItemContent;
     250             :         }
     251             : 
     252           0 :         const ItemDescriptor& rLastItem( *io_rItems.rbegin() );
     253           0 :         const Point aLastItemBottomRight( rLastItem.GetCurrentRect().BottomRight() );
     254           0 :         return  aFitInto.Left() <= aLastItemBottomRight.X()
     255           0 :             &&  aFitInto.Right() >= aLastItemBottomRight.X();
     256             :     }
     257             : 
     258             :     //------------------------------------------------------------------------------------------------------------------
     259           0 :     Size TabBarGeometry::getOptimalSize( ItemDescriptors& io_rItems, const bool i_bMinimalSize ) const
     260             :     {
     261           0 :         if ( io_rItems.empty() )
     262             :             return Size(
     263           0 :                 m_aItemsInset.Left() + m_aItemsInset.Right(),
     264           0 :                 m_aItemsInset.Top() + m_aItemsInset.Bottom()
     265           0 :             );
     266             : 
     267             :         // the rect of the last item
     268           0 :         const Rectangle& rLastItemRect( i_bMinimalSize ? io_rItems.rbegin()->aIconOnlyArea : io_rItems.rbegin()->aCompleteArea );
     269             :         return Size(
     270           0 :                     rLastItemRect.Left() + 1 + m_aItemsInset.Right(),
     271           0 :                     rLastItemRect.Top() + 1 + rLastItemRect.Bottom() + m_aItemsInset.Bottom()
     272           0 :                 );
     273             :     }
     274             : 
     275             :     //------------------------------------------------------------------------------------------------------------------
     276           0 :     void TabBarGeometry::relayout( const Size& i_rActualOutputSize, ItemDescriptors& io_rItems )
     277             :     {
     278             :         // assume all items fit
     279           0 :         Point aButtonBackPos( OUTER_SPACE_LEFT, OUTER_SPACE_TOP );
     280           0 :         m_aButtonBackRect = Rectangle( aButtonBackPos, Size( 1, 1 ) );
     281           0 :         m_aButtonBackRect.SetEmpty();
     282             : 
     283           0 :         Point aButtonForwardPos( i_rActualOutputSize.Width(), OUTER_SPACE_TOP );
     284           0 :         m_aButtonForwardRect = Rectangle( aButtonForwardPos, Size( 1, 1 ) );
     285           0 :         m_aButtonForwardRect.SetEmpty();
     286             : 
     287           0 :         Point aItemsPos( OUTER_SPACE_LEFT, 0 );
     288           0 :         Size aItemsSize( i_rActualOutputSize.Width() - OUTER_SPACE_LEFT - OUTER_SPACE_RIGHT, i_rActualOutputSize.Height() );
     289           0 :         m_aItemsRect = Rectangle( aItemsPos, aItemsSize );
     290             : 
     291           0 :         if ( !impl_fitItems( io_rItems ) )
     292             :         {
     293             :             // assumption was wrong, the items do not fit => calculate rects for the scroll buttons
     294           0 :             const Size aButtonSize( BUTTON_FLOW_WIDTH, i_rActualOutputSize.Height() - OUTER_SPACE_TOP - OUTER_SPACE_BOTTOM );
     295             : 
     296           0 :             aButtonBackPos = Point( OUTER_SPACE_LEFT, OUTER_SPACE_TOP );
     297           0 :             m_aButtonBackRect = Rectangle( aButtonBackPos, aButtonSize );
     298             : 
     299           0 :             aButtonForwardPos = Point( i_rActualOutputSize.Width() - BUTTON_FLOW_WIDTH - OUTER_SPACE_RIGHT, OUTER_SPACE_TOP );
     300           0 :             m_aButtonForwardRect = Rectangle( aButtonForwardPos, aButtonSize );
     301             : 
     302           0 :             aItemsPos.X() = aButtonBackPos.X() + aButtonSize.Width() + BUTTON_FLOW_SPACE;
     303           0 :             aItemsSize.Width() = aButtonForwardPos.X() - BUTTON_FLOW_SPACE - aItemsPos.X();
     304           0 :             m_aItemsRect = Rectangle( aItemsPos, aItemsSize );
     305             : 
     306             :             // fit items, again. In the TABITEM_AUTO case, the smaller playground for the items might lead to another
     307             :             // item content.
     308           0 :             impl_fitItems( io_rItems );
     309             :         }
     310           0 :     }
     311             : 
     312             :     //------------------------------------------------------------------------------------------------------------------
     313           0 :     Point TabBarGeometry::getFirstItemPosition() const
     314             :     {
     315           0 :         return Point( m_aItemsInset.Left(), m_aItemsInset.Top() );
     316             :     }
     317             : 
     318             : //......................................................................................................................
     319             : } // namespace svt
     320             : //......................................................................................................................
     321             : 
     322             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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