src/dolphiniconsview.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz (peter.penz@gmx.at)                  *
   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 "dolphiniconsview.h"
  21
  22 #include "dolphincontroller.h"
  23 #include "dolphinsettings.h"
  24 #include "dolphinitemcategorizer.h"
  25
  26 #include "dolphin_iconsmodesettings.h"
  27
  28 #include <kdirmodel.h>
  29 #include <kfileitem.h>
  30 #include <kfileitemdelegate.h>
  31
  32 #include <QtGui/QAbstractProxyModel>
  33 #include <QtCore/QPoint>
  34
  35 DolphinIconsView::DolphinIconsView(QWidget* parent, DolphinController* controller) :
  36     KListView(parent),
  37     m_controller(controller)
  38 {
  39     Q_ASSERT(controller != 0);
  40     setViewMode(QListView::IconMode);
  41     setResizeMode(QListView::Adjust);
  42
  43     setMouseTracking(true);
  44     viewport()->setAttribute(Qt::WA_Hover);
  45
  46     if (KGlobalSettings::singleClick()) {
  47         connect(this, SIGNAL(clicked(const QModelIndex&)),
  48                 controller, SLOT(triggerItem(const QModelIndex&)));
  49     } else {
  50         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
  51                 controller, SLOT(triggerItem(const QModelIndex&)));
  52     }
  53     connect(this, SIGNAL(activated(const QModelIndex&)),
  54             controller, SLOT(triggerItem(const QModelIndex&)));
  55     connect(this, SIGNAL(entered(const QModelIndex&)),
  56             controller, SLOT(emitItemEntered(const QModelIndex&)));
  57     connect(this, SIGNAL(viewportEntered()),
  58             controller, SLOT(emitViewportEntered()));
  59     connect(controller, SIGNAL(showPreviewChanged(bool)),
  60             this, SLOT(slotShowPreviewChanged(bool)));
  61     connect(controller, SIGNAL(showAdditionalInfoChanged(bool)),
  62             this, SLOT(slotShowAdditionalInfoChanged(bool)));
  63     connect(controller, SIGNAL(zoomIn()),
  64             this, SLOT(zoomIn()));
  65     connect(controller, SIGNAL(zoomOut()),
  66             this, SLOT(zoomOut()));
  67
  68     // apply the icons mode settings to the widget
  69     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
  70     Q_ASSERT(settings != 0);
  71
  72     m_viewOptions = KListView::viewOptions();
  73     m_viewOptions.showDecorationSelected = true;
  74
  75     QFont font(settings->fontFamily(), settings->fontSize());
  76     font.setItalic(settings->italicFont());
  77     font.setBold(settings->boldFont());
  78     m_viewOptions.font = font;
  79
  80     setWordWrap(settings->numberOfTextlines() > 1);
  81     updateGridSize(controller->showPreview(), controller->showAdditionalInfo());
  82
  83     if (settings->arrangement() == QListView::TopToBottom) {
  84         setFlow(QListView::LeftToRight);
  85         m_viewOptions.decorationPosition = QStyleOptionViewItem::Top;
  86     } else {
  87         setFlow(QListView::TopToBottom);
  88         m_viewOptions.decorationPosition = QStyleOptionViewItem::Left;
  89         m_viewOptions.displayAlignment = Qt::AlignLeft | Qt::AlignVCenter;
  90     }
  91 }
  92
  93 DolphinIconsView::~DolphinIconsView()
  94 {
  95 }
  96
  97 QStyleOptionViewItem DolphinIconsView::viewOptions() const
  98 {
  99     return m_viewOptions;
 100 }
 101
 102 void DolphinIconsView::contextMenuEvent(QContextMenuEvent* event)
 103 {
 104     KListView::contextMenuEvent(event);
 105     m_controller->triggerContextMenuRequest(event->pos());
 106 }
 107
 108 void DolphinIconsView::mouseReleaseEvent(QMouseEvent* event)
 109 {
 110     KListView::mouseReleaseEvent(event);
 111     m_controller->triggerActivation();
 112 }
 113
 114 void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)
 115 {
 116     if (event->mimeData()->hasUrls()) {
 117         event->acceptProposedAction();
 118     }
 119 }
 120
 121 void DolphinIconsView::dropEvent(QDropEvent* event)
 122 {
 123     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 124     if (!urls.isEmpty()) {
 125         m_controller->indicateDroppedUrls(urls,
 126                                           indexAt(event->pos()),
 127                                           event->source());
 128         event->acceptProposedAction();
 129     }
 130     KListView::dropEvent(event);
 131 }
 132
 133 void DolphinIconsView::slotShowPreviewChanged(bool showPreview)
 134 {
 135     updateGridSize(showPreview, m_controller->showAdditionalInfo());
 136 }
 137
 138 void DolphinIconsView::slotShowAdditionalInfoChanged(bool showAdditionalInfo)
 139 {
 140     updateGridSize(m_controller->showPreview(), showAdditionalInfo);
 141 }
 142
 143 void DolphinIconsView::zoomIn()
 144 {
 145     if (isZoomInPossible()) {
 146         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 147
 148         const int oldIconSize = settings->iconSize();
 149         int newIconSize = oldIconSize;
 150
 151         const bool showPreview = m_controller->showPreview();
 152         if (showPreview) {
 153             const int previewSize = increasedIconSize(settings->previewSize());
 154             settings->setPreviewSize(previewSize);
 155         } else {
 156             newIconSize = increasedIconSize(oldIconSize);
 157             settings->setIconSize(newIconSize);
 158             if (settings->previewSize() < newIconSize) {
 159                 // assure that the preview size is always >= the icon size
 160                 settings->setPreviewSize(newIconSize);
 161             }
 162         }
 163
 164         // increase also the grid size
 165         const int diff = newIconSize - oldIconSize;
 166         settings->setItemWidth(settings->itemWidth() + diff);
 167         settings->setItemHeight(settings->itemHeight() + diff);
 168
 169         updateGridSize(showPreview, m_controller->showAdditionalInfo());
 170     }
 171 }
 172
 173 void DolphinIconsView::zoomOut()
 174 {
 175     if (isZoomOutPossible()) {
 176         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 177
 178         const int oldIconSize = settings->iconSize();
 179         int newIconSize = oldIconSize;
 180
 181         const bool showPreview = m_controller->showPreview();
 182         if (showPreview) {
 183             const int previewSize = decreasedIconSize(settings->previewSize());
 184             settings->setPreviewSize(previewSize);
 185             if (settings->iconSize() > previewSize) {
 186                 // assure that the icon size is always <= the preview size
 187                 newIconSize = previewSize;
 188                 settings->setIconSize(newIconSize);
 189             }
 190         } else {
 191             newIconSize = decreasedIconSize(settings->iconSize());
 192             settings->setIconSize(newIconSize);
 193         }
 194
 195         // decrease also the grid size
 196         const int diff = oldIconSize - newIconSize;
 197         settings->setItemWidth(settings->itemWidth() - diff);
 198         settings->setItemHeight(settings->itemHeight() - diff);
 199
 200         updateGridSize(showPreview, m_controller->showAdditionalInfo());
 201     }
 202 }
 203
 204 bool DolphinIconsView::isZoomInPossible() const
 205 {
 206     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 207     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 208     return size < K3Icon::SizeEnormous;
 209 }
 210
 211 bool DolphinIconsView::isZoomOutPossible() const
 212 {
 213     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 214     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 215     return size > K3Icon::SizeSmall;
 216 }
 217
 218 int DolphinIconsView::increasedIconSize(int size) const
 219 {
 220     // TODO: get rid of K3Icon sizes
 221     int incSize = 0;
 222     switch (size) {
 223     case K3Icon::SizeSmall:       incSize = K3Icon::SizeSmallMedium; break;
 224     case K3Icon::SizeSmallMedium: incSize = K3Icon::SizeMedium; break;
 225     case K3Icon::SizeMedium:      incSize = K3Icon::SizeLarge; break;
 226     case K3Icon::SizeLarge:       incSize = K3Icon::SizeHuge; break;
 227     case K3Icon::SizeHuge:        incSize = K3Icon::SizeEnormous; break;
 228     default: Q_ASSERT(false); break;
 229     }
 230     return incSize;
 231 }
 232
 233 int DolphinIconsView::decreasedIconSize(int size) const
 234 {
 235     // TODO: get rid of K3Icon sizes
 236     int decSize = 0;
 237     switch (size) {
 238     case K3Icon::SizeSmallMedium: decSize = K3Icon::SizeSmall; break;
 239     case K3Icon::SizeMedium: decSize = K3Icon::SizeSmallMedium; break;
 240     case K3Icon::SizeLarge: decSize = K3Icon::SizeMedium; break;
 241     case K3Icon::SizeHuge: decSize = K3Icon::SizeLarge; break;
 242     case K3Icon::SizeEnormous: decSize = K3Icon::SizeHuge; break;
 243     default: Q_ASSERT(false); break;
 244     }
 245     return decSize;
 246 }
 247
 248 void DolphinIconsView::updateGridSize(bool showPreview, bool showAdditionalInfo)
 249 {
 250     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 251     Q_ASSERT(settings != 0);
 252
 253     int itemWidth = settings->itemWidth();
 254     int itemHeight = settings->itemHeight();
 255     int size = settings->iconSize();
 256
 257     if (showPreview) {
 258         const int previewSize = settings->previewSize();
 259         const int diff = previewSize - size;
 260         Q_ASSERT(diff >= 0);
 261         itemWidth  += diff;
 262         itemHeight += diff;
 263
 264         size = previewSize;
 265     }
 266
 267     if (showAdditionalInfo) {
 268         itemHeight += m_viewOptions.font.pointSize() * 2;
 269     }
 270
 271     if (settings->arrangement() == QListView::TopToBottom) {
 272         // The decoration width indirectly defines the maximum
 273         // width for the text wrapping. To use the maximum item width
 274         // for text wrapping, it is used as decoration width.
 275         m_viewOptions.decorationSize = QSize(itemWidth, size);
 276     } else {
 277         m_viewOptions.decorationSize = QSize(size, size);
 278     }
 279
 280     const int spacing = settings->gridSpacing();
 281     setGridSize(QSize(itemWidth + spacing, itemHeight + spacing));
 282
 283     m_controller->setZoomInPossible(isZoomInPossible());
 284     m_controller->setZoomOutPossible(isZoomOutPossible());
 285 }
 286
 287 #include "dolphiniconsview.moc"