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     }
  90 }
  91
  92 DolphinIconsView::~DolphinIconsView()
  93 {
  94 }
  95
  96 QStyleOptionViewItem DolphinIconsView::viewOptions() const
  97 {
  98     return m_viewOptions;
  99 }
 100
 101 void DolphinIconsView::contextMenuEvent(QContextMenuEvent* event)
 102 {
 103     KListView::contextMenuEvent(event);
 104     m_controller->triggerContextMenuRequest(event->pos());
 105 }
 106
 107 void DolphinIconsView::mouseReleaseEvent(QMouseEvent* event)
 108 {
 109     KListView::mouseReleaseEvent(event);
 110     m_controller->triggerActivation();
 111 }
 112
 113 void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)
 114 {
 115     if (event->mimeData()->hasUrls()) {
 116         event->acceptProposedAction();
 117     }
 118 }
 119
 120 void DolphinIconsView::dropEvent(QDropEvent* event)
 121 {
 122     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 123     if (!urls.isEmpty()) {
 124         m_controller->indicateDroppedUrls(urls,
 125                                           indexAt(event->pos()),
 126                                           event->source());
 127         event->acceptProposedAction();
 128     }
 129     KListView::dropEvent(event);
 130 }
 131
 132 void DolphinIconsView::slotShowPreviewChanged(bool showPreview)
 133 {
 134     updateGridSize(showPreview, m_controller->showAdditionalInfo());
 135 }
 136
 137 void DolphinIconsView::slotShowAdditionalInfoChanged(bool showAdditionalInfo)
 138 {
 139     updateGridSize(m_controller->showPreview(), showAdditionalInfo);
 140 }
 141
 142 void DolphinIconsView::zoomIn()
 143 {
 144     if (isZoomInPossible()) {
 145         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 146
 147         const int oldIconSize = settings->iconSize();
 148         int newIconSize = oldIconSize;
 149
 150         const bool showPreview = m_controller->showPreview();
 151         if (showPreview) {
 152             const int previewSize = increasedIconSize(settings->previewSize());
 153             settings->setPreviewSize(previewSize);
 154         } else {
 155             newIconSize = increasedIconSize(oldIconSize);
 156             settings->setIconSize(newIconSize);
 157             if (settings->previewSize() < newIconSize) {
 158                 // assure that the preview size is always >= the icon size
 159                 settings->setPreviewSize(newIconSize);
 160             }
 161         }
 162
 163         // increase also the grid size
 164         const int diff = newIconSize - oldIconSize;
 165         settings->setGridWidth(settings->gridWidth() + diff);
 166         settings->setGridHeight(settings->gridHeight() + diff);
 167
 168         updateGridSize(showPreview, m_controller->showAdditionalInfo());
 169     }
 170 }
 171
 172 void DolphinIconsView::zoomOut()
 173 {
 174     if (isZoomOutPossible()) {
 175         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 176
 177         const int oldIconSize = settings->iconSize();
 178         int newIconSize = oldIconSize;
 179
 180         const bool showPreview = m_controller->showPreview();
 181         if (showPreview) {
 182             const int previewSize = decreasedIconSize(settings->previewSize());
 183             settings->setPreviewSize(previewSize);
 184             if (settings->iconSize() > previewSize) {
 185                 // assure that the icon size is always <= the preview size
 186                 newIconSize = previewSize;
 187                 settings->setIconSize(newIconSize);
 188             }
 189         } else {
 190             newIconSize = decreasedIconSize(settings->iconSize());
 191             settings->setIconSize(newIconSize);
 192         }
 193
 194         // decrease also the grid size
 195         const int diff = oldIconSize - newIconSize;
 196         settings->setGridWidth(settings->gridWidth() - diff);
 197         settings->setGridHeight(settings->gridHeight() - diff);
 198
 199         updateGridSize(showPreview, m_controller->showAdditionalInfo());
 200     }
 201 }
 202
 203 bool DolphinIconsView::isZoomInPossible() const
 204 {
 205     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 206     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 207     return size < K3Icon::SizeEnormous;
 208 }
 209
 210 bool DolphinIconsView::isZoomOutPossible() const
 211 {
 212     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 213     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 214     return size > K3Icon::SizeSmall;
 215 }
 216
 217 int DolphinIconsView::increasedIconSize(int size) const
 218 {
 219     // TODO: get rid of K3Icon sizes
 220     int incSize = 0;
 221     switch (size) {
 222     case K3Icon::SizeSmall:       incSize = K3Icon::SizeSmallMedium; break;
 223     case K3Icon::SizeSmallMedium: incSize = K3Icon::SizeMedium; break;
 224     case K3Icon::SizeMedium:      incSize = K3Icon::SizeLarge; break;
 225     case K3Icon::SizeLarge:       incSize = K3Icon::SizeHuge; break;
 226     case K3Icon::SizeHuge:        incSize = K3Icon::SizeEnormous; break;
 227     default: Q_ASSERT(false); break;
 228     }
 229     return incSize;
 230 }
 231
 232 int DolphinIconsView::decreasedIconSize(int size) const
 233 {
 234     // TODO: get rid of K3Icon sizes
 235     int decSize = 0;
 236     switch (size) {
 237     case K3Icon::SizeSmallMedium: decSize = K3Icon::SizeSmall; break;
 238     case K3Icon::SizeMedium: decSize = K3Icon::SizeSmallMedium; break;
 239     case K3Icon::SizeLarge: decSize = K3Icon::SizeMedium; break;
 240     case K3Icon::SizeHuge: decSize = K3Icon::SizeLarge; break;
 241     case K3Icon::SizeEnormous: decSize = K3Icon::SizeHuge; break;
 242     default: Q_ASSERT(false); break;
 243     }
 244     return decSize;
 245 }
 246
 247 void DolphinIconsView::updateGridSize(bool showPreview, bool showAdditionalInfo)
 248 {
 249     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 250     Q_ASSERT(settings != 0);
 251
 252     int gridWidth = settings->gridWidth();
 253     int gridHeight = settings->gridHeight();
 254     int size = settings->iconSize();
 255
 256     if (showPreview) {
 257         const int previewSize = settings->previewSize();
 258         const int diff = previewSize - size;
 259         Q_ASSERT(diff >= 0);
 260         gridWidth  += diff;
 261         gridHeight += diff;
 262
 263         size = previewSize;
 264     }
 265
 266     if (showAdditionalInfo) {
 267         gridHeight += m_viewOptions.font.pointSize() * 2;
 268     }
 269
 270     m_viewOptions.decorationSize = QSize(size, size);
 271     setGridSize(QSize(gridWidth, gridHeight));
 272
 273     m_controller->setZoomInPossible(isZoomInPossible());
 274     m_controller->setZoomOutPossible(isZoomOutPossible());
 275 }
 276
 277 #include "dolphiniconsview.moc"