src/views/dolphinitemlistview.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com>             *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "dolphinitemlistview.h"
  21
  22 #include "dolphin_generalsettings.h"
  23 #include "dolphin_iconsmodesettings.h"
  24 #include "dolphin_detailsmodesettings.h"
  25 #include "dolphin_compactmodesettings.h"
  26 #include "dolphinfileitemlistwidget.h"
  27
  28 #include <kitemviews/kfileitemlistview.h>
  29 #include <kitemviews/kfileitemmodel.h>
  30 #include <kitemviews/kitemlistcontroller.h>
  31 #include <kitemviews/kitemliststyleoption.h>
  32
  33 #include <KGlobalSettings>
  34
  35 #include <views/viewmodecontroller.h>
  36
  37 #include "zoomlevelinfo.h"
  38
  39
  40 DolphinItemListView::DolphinItemListView(QGraphicsWidget* parent) :
  41     KFileItemListView(parent),
  42     m_zoomLevel(0)
  43 {
  44     updateFont();
  45     updateGridSize();
  46 }
  47
  48 DolphinItemListView::~DolphinItemListView()
  49 {
  50     writeSettings();
  51 }
  52
  53 void DolphinItemListView::setZoomLevel(int level)
  54 {
  55     if (level < ZoomLevelInfo::minimumLevel()) {
  56         level = ZoomLevelInfo::minimumLevel();
  57     } else if (level > ZoomLevelInfo::maximumLevel()) {
  58         level = ZoomLevelInfo::maximumLevel();
  59     }
  60
  61     if (level == m_zoomLevel) {
  62         return;
  63     }
  64
  65     m_zoomLevel = level;
  66
  67     ViewModeSettings settings(viewMode());
  68     if (previewsShown()) {
  69         const int previewSize = ZoomLevelInfo::iconSizeForZoomLevel(level);
  70         settings.setPreviewSize(previewSize);
  71     } else {
  72         const int iconSize = ZoomLevelInfo::iconSizeForZoomLevel(level);
  73         settings.setIconSize(iconSize);
  74     }
  75
  76     updateGridSize();
  77 }
  78
  79 int DolphinItemListView::zoomLevel() const
  80 {
  81     return m_zoomLevel;
  82 }
  83
  84 void DolphinItemListView::readSettings()
  85 {
  86     ViewModeSettings settings(viewMode());
  87     settings.readConfig();
  88
  89     beginTransaction();
  90
  91     setEnabledSelectionToggles(GeneralSettings::showSelectionToggle());
  92     setSupportsItemExpanding(itemLayoutSupportsItemExpanding(itemLayout()));
  93
  94     updateFont();
  95     updateGridSize();
  96
  97     const KConfigGroup globalConfig(KGlobal::config(), "PreviewSettings");
  98     const QStringList plugins = globalConfig.readEntry("Plugins", QStringList()
  99                                                        << "directorythumbnail"
 100                                                        << "imagethumbnail"
 101                                                        << "jpegthumbnail");
 102     setEnabledPlugins(plugins);
 103
 104     endTransaction();
 105 }
 106
 107 void DolphinItemListView::writeSettings()
 108 {
 109     IconsModeSettings::self()->writeConfig();
 110     CompactModeSettings::self()->writeConfig();
 111     DetailsModeSettings::self()->writeConfig();
 112 }
 113
 114 KItemListWidgetCreatorBase* DolphinItemListView::defaultWidgetCreator() const
 115 {
 116     return new KItemListWidgetCreator<DolphinFileItemListWidget>();
 117 }
 118
 119 bool DolphinItemListView::itemLayoutSupportsItemExpanding(ItemLayout layout) const
 120 {
 121     return layout == DetailsLayout && DetailsModeSettings::expandableFolders();
 122 }
 123
 124 void DolphinItemListView::onItemLayoutChanged(ItemLayout current, ItemLayout previous)
 125 {
 126     setHeaderVisible(current == DetailsLayout);
 127
 128     updateFont();
 129     updateGridSize();
 130
 131     KFileItemListView::onItemLayoutChanged(current, previous);
 132 }
 133
 134 void DolphinItemListView::onPreviewsShownChanged(bool shown)
 135 {
 136     Q_UNUSED(shown);
 137     updateGridSize();
 138 }
 139
 140 void DolphinItemListView::onVisibleRolesChanged(const QList<QByteArray>& current,
 141                                                 const QList<QByteArray>& previous)
 142 {
 143     KFileItemListView::onVisibleRolesChanged(current, previous);
 144     updateGridSize();
 145 }
 146
 147 void DolphinItemListView::updateGridSize()
 148 {
 149     const ViewModeSettings settings(viewMode());
 150
 151     // Calculate the size of the icon
 152     const int iconSize = previewsShown() ? settings.previewSize() : settings.iconSize();
 153     m_zoomLevel = ZoomLevelInfo::zoomLevelForIconSize(QSize(iconSize, iconSize));
 154     KItemListStyleOption option = styleOption();
 155
 156     const int padding = 2;
 157     int horizontalMargin = 0;
 158     int verticalMargin = 0;
 159
 160     // Calculate the item-width and item-height
 161     int itemWidth;
 162     int itemHeight;
 163     QSize maxTextSize;
 164
 165     switch (itemLayout()) {
 166     case KFileItemListView::IconsLayout: {
 167         const int minItemWidth = 48;
 168         itemWidth = minItemWidth + IconsModeSettings::textWidthIndex() * 64;
 169
 170         if (previewsShown()) {
 171             // Optimize the width for previews with a 3:2 aspect ratio instead
 172             // of a 1:1 ratio to avoid wasting too much vertical space when
 173             // showing photos.
 174             const int minWidth = iconSize * 3 / 2;
 175             itemWidth = qMax(itemWidth, minWidth);
 176         }
 177
 178         if (itemWidth < iconSize + padding * 2) {
 179             itemWidth = iconSize + padding * 2;
 180         }
 181
 182         itemHeight = padding * 3 + iconSize + option.fontMetrics.lineSpacing();
 183         if (IconsModeSettings::maximumTextLines() > 0) {
 184             // A restriction is given for the maximum number of textlines (0 means
 185             // having no restriction)
 186             const int additionalInfoCount = visibleRoles().count() - 1;
 187             const int maxAdditionalLines = additionalInfoCount + IconsModeSettings::maximumTextLines();
 188             maxTextSize.rheight() = option.fontMetrics.lineSpacing() * maxAdditionalLines;
 189         }
 190
 191         horizontalMargin = 4;
 192         verticalMargin = 8;
 193         break;
 194     }
 195     case KFileItemListView::CompactLayout: {
 196         itemWidth = padding * 4 + iconSize + option.fontMetrics.height() * 5;
 197         const int textLinesCount = visibleRoles().count();
 198         itemHeight = padding * 2 + qMax(iconSize, textLinesCount * option.fontMetrics.lineSpacing());
 199
 200         if (CompactModeSettings::maximumTextWidthIndex() > 0) {
 201             // A restriction is given for the maximum width of the text (0 means
 202             // having no restriction)
 203             maxTextSize.rwidth() = option.fontMetrics.height() * 10 *
 204                                    CompactModeSettings::maximumTextWidthIndex();
 205         }
 206
 207         horizontalMargin = 8;
 208         break;
 209     }
 210     case KFileItemListView::DetailsLayout: {
 211         itemWidth = -1;
 212         itemHeight = padding * 2 + qMax(iconSize, option.fontMetrics.lineSpacing());
 213         break;
 214     }
 215     default:
 216         itemWidth = -1;
 217         itemHeight = -1;
 218         Q_ASSERT(false);
 219         break;
 220     }
 221
 222     // Apply the calculated values
 223     option.padding = padding;
 224     option.horizontalMargin = horizontalMargin;
 225     option.verticalMargin = verticalMargin;
 226     option.iconSize = iconSize;
 227     option.maxTextSize = maxTextSize;
 228     beginTransaction();
 229     setStyleOption(option);
 230     setItemSize(QSizeF(itemWidth, itemHeight));
 231     endTransaction();
 232 }
 233
 234 void DolphinItemListView::updateFont()
 235 {
 236     KItemListStyleOption option = styleOption();
 237
 238     const ViewModeSettings settings(viewMode());
 239
 240     QFont font(settings.fontFamily(), qRound(settings.fontSize()));
 241     font.setItalic(settings.italicFont());
 242     font.setWeight(settings.fontWeight());
 243     font.setPointSizeF(settings.fontSize());
 244
 245     option.font = font;
 246     option.fontMetrics = QFontMetrics(font);
 247
 248     setStyleOption(option);
 249 }
 250
 251 ViewModeSettings::ViewMode DolphinItemListView::viewMode() const
 252 {
 253     ViewModeSettings::ViewMode mode;
 254
 255     switch (itemLayout()) {
 256     case KFileItemListView::IconsLayout:   mode = ViewModeSettings::IconsMode; break;
 257     case KFileItemListView::CompactLayout: mode = ViewModeSettings::CompactMode; break;
 258     case KFileItemListView::DetailsLayout: mode = ViewModeSettings::DetailsMode; break;
 259     default:                               mode = ViewModeSettings::IconsMode;
 260                                            Q_ASSERT(false);
 261                                            break;
 262     }
 263
 264     return mode;
 265 }
 266
 267 #include "dolphinitemlistview.moc"