ThumbnailView/CellGeometry.cpp

   1 /* Copyright (C) 2003-2009 Jesper K. Pedersen <blackie@kde.org>
   2
   3    This program is free software; you can redistribute it and/or
   4    modify it under the terms of the GNU General Public
   5    License as published by the Free Software Foundation; either
   6    version 2 of the License, or (at your option) any later version.
   7
   8    This program is distributed in the hope that it will be useful,
   9    but WITHOUT ANY WARRANTY; without even the implied warranty of
  10    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11    General Public License for more details.
  12
  13    You should have received a copy of the GNU General Public License
  14    along with this program; see the file COPYING.  If not, write to
  15    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  16    Boston, MA 02110-1301, USA.
  17 */
  18 #include "CellGeometry.h"
  19 #include "ThumbnailCache.h"
  20 #include "ThumbnailModel.h"
  21 #include "DB/ResultId.h"
  22 #include "Settings/SettingsData.h"
  23
  24 using Utilities::StringSet;
  25
  26 ThumbnailView::CellGeometry::CellGeometry( ThumbnailFactory* factory )
  27     :ThumbnailComponent(factory)
  28 {
  29 }
  30
  31 /**
  32  * Return desired size of the whole cell
  33  */
  34 QSize ThumbnailView::CellGeometry::cellSize() const
  35 {
  36     int width = Settings::SettingsData::instance()->thumbSize();
  37     int height = width;
  38
  39     switch (Settings::SettingsData::instance()->thumbnailAspectRatio()) {
  40         case Settings::Aspect_16_9:
  41             height = (int) (height * 9.0 / 16);
  42             break;
  43         case Settings::Aspect_4_3:
  44             height = (int) (height * 3.0 / 4);
  45             break;
  46         case Settings::Aspect_3_2:
  47             height = (int) (height * 2.0 / 3);
  48             break;
  49         case Settings::Aspect_9_16:
  50             width = (int) (width * 9.0 / 16);
  51             break;
  52         case Settings::Aspect_3_4:
  53             width = (int) (width * 3.0 / 4);
  54             break;
  55         case Settings::Aspect_2_3:
  56             width = (int) (width * 2.0 / 3);
  57             break;
  58         case Settings::Aspect_1_1:
  59             // nothing
  60             ;
  61     }
  62     return QSize( width, height);
  63 }
  64
  65
  66 /**
  67  * Return the geometry for the icon in the cell (row,col). The returned coordinates are local to the cell.
  68  */
  69 QRect ThumbnailView::CellGeometry::iconGeometry( int row, int col ) const
  70 {
  71     DB::ResultId mediaId = model()->imageAt( row, col );
  72     if ( mediaId.isNull() ) // empty cell
  73         return QRect();
  74
  75     const QSize cellSize = this->cellSize();
  76     const int space = Settings::SettingsData::instance()->thumbnailSpace();
  77     int width = cellSize.width() - 2 * space;
  78     int height = cellSize.height() - 2 * space;
  79
  80     QPixmap pixmap;
  81     if (!cache()->find(mediaId, &pixmap)
  82         || (pixmap.width() == 0 && pixmap.height() == 0)) {
  83         return QRect( space, space, width, height );
  84     }
  85
  86     int xoff = space + (width - pixmap.width()) / 2;
  87     int yoff = space + (height - pixmap.height()) / 2;
  88
  89     return QRect( xoff, yoff, pixmap.width(), pixmap.height() );
  90 }
  91
  92 /**
  93  * return the number of categories with valies in for the given image.
  94  */
  95 static int noOfCategoriesForImage(const DB::ResultId& image )
  96 {
  97     int catsInText = 0;
  98     QStringList grps = image.fetchInfo()->availableCategories();
  99     for( QStringList::const_iterator it = grps.constBegin(); it != grps.constEnd(); ++it ) {
 100         QString category = *it;
 101         if ( category != QString::fromLatin1( "Folder" ) && category != QString::fromLatin1( "Media Type" ) ) {
 102             StringSet items = image.fetchInfo()->itemsOfCategory( category );
 103             if (!items.empty()) {
 104                 catsInText++;
 105             }
 106         }
 107     }
 108     return catsInText;
 109 }
 110
 111
 112 /**
 113  * Return the height of the text under the thumbnails.
 114  */
 115 int ThumbnailView::CellGeometry::textHeight( int charHeight, bool reCalc ) const
 116 {
 117     int h = 0;
 118     static int maxCatsInText = 0;
 119
 120     if ( Settings::SettingsData::instance()->displayLabels() )
 121         h += charHeight +2;
 122     if ( Settings::SettingsData::instance()->displayCategories()) {
 123         if ( reCalc ) {
 124             maxCatsInText = 0;
 125             Q_FOREACH(DB::ResultId id, model()->imageList(ViewOrder)) {
 126                 maxCatsInText = qMax( noOfCategoriesForImage(id), maxCatsInText);
 127             }
 128         }
 129         h += charHeight * ( maxCatsInText ) +5;
 130     }
 131     return h;
 132 }