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     if (settings->numberOfTextlines() > 1) {
  80         m_viewOptions.features = QStyleOptionViewItemV2::WrapText;
  81     }
  82
  83     updateGridSize(controller->showPreview(), controller->showAdditionalInfo());
  84
  85     if (settings->arrangement() == QListView::TopToBottom) {
  86         setFlow(QListView::LeftToRight);
  87         m_viewOptions.decorationPosition = QStyleOptionViewItem::Top;
  88     } else {
  89         setFlow(QListView::TopToBottom);
  90         m_viewOptions.decorationPosition = QStyleOptionViewItem::Left;
  91     }
  92 }
  93
  94 DolphinIconsView::~DolphinIconsView()
  95 {
  96 }
  97
  98 QStyleOptionViewItem DolphinIconsView::viewOptions() const
  99 {
 100     return m_viewOptions;
 101 }
 102
 103 void DolphinIconsView::contextMenuEvent(QContextMenuEvent* event)
 104 {
 105     KListView::contextMenuEvent(event);
 106     m_controller->triggerContextMenuRequest(event->pos());
 107 }
 108
 109 void DolphinIconsView::mouseReleaseEvent(QMouseEvent* event)
 110 {
 111     KListView::mouseReleaseEvent(event);
 112     m_controller->triggerActivation();
 113 }
 114
 115 void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)
 116 {
 117     if (event->mimeData()->hasUrls()) {
 118         event->acceptProposedAction();
 119     }
 120 }
 121
 122 void DolphinIconsView::dropEvent(QDropEvent* event)
 123 {
 124     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 125     if (!urls.isEmpty()) {
 126         m_controller->indicateDroppedUrls(urls,
 127                                           indexAt(event->pos()),
 128                                           event->source());
 129         event->acceptProposedAction();
 130     }
 131     KListView::dropEvent(event);
 132 }
 133
 134 void DolphinIconsView::slotShowPreviewChanged(bool showPreview)
 135 {
 136     updateGridSize(showPreview, m_controller->showAdditionalInfo());
 137 }
 138
 139 void DolphinIconsView::slotShowAdditionalInfoChanged(bool showAdditionalInfo)
 140 {
 141     updateGridSize(m_controller->showPreview(), showAdditionalInfo);
 142 }
 143
 144 void DolphinIconsView::zoomIn()
 145 {
 146     if (isZoomInPossible()) {
 147         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 148
 149         const int oldIconSize = settings->iconSize();
 150         int newIconSize = oldIconSize;
 151
 152         const bool showPreview = m_controller->showPreview();
 153         if (showPreview) {
 154             const int previewSize = increasedIconSize(settings->previewSize());
 155             settings->setPreviewSize(previewSize);
 156         } else {
 157             newIconSize = increasedIconSize(oldIconSize);
 158             settings->setIconSize(newIconSize);
 159             if (settings->previewSize() < newIconSize) {
 160                 // assure that the preview size is always >= the icon size
 161                 settings->setPreviewSize(newIconSize);
 162             }
 163         }
 164
 165         // increase also the grid size
 166         const int diff = newIconSize - oldIconSize;
 167         settings->setGridWidth(settings->gridWidth() + diff);
 168         settings->setGridHeight(settings->gridHeight() + diff);
 169
 170         updateGridSize(showPreview, m_controller->showAdditionalInfo());
 171     }
 172 }
 173
 174 void DolphinIconsView::zoomOut()
 175 {
 176     if (isZoomOutPossible()) {
 177         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 178
 179         const int oldIconSize = settings->iconSize();
 180         int newIconSize = oldIconSize;
 181
 182         const bool showPreview = m_controller->showPreview();
 183         if (showPreview) {
 184             const int previewSize = decreasedIconSize(settings->previewSize());
 185             settings->setPreviewSize(previewSize);
 186             if (settings->iconSize() > previewSize) {
 187                 // assure that the icon size is always <= the preview size
 188                 newIconSize = previewSize;
 189                 settings->setIconSize(newIconSize);
 190             }
 191         } else {
 192             newIconSize = decreasedIconSize(settings->iconSize());
 193             settings->setIconSize(newIconSize);
 194         }
 195
 196         // decrease also the grid size
 197         const int diff = oldIconSize - newIconSize;
 198         settings->setGridWidth(settings->gridWidth() - diff);
 199         settings->setGridHeight(settings->gridHeight() - diff);
 200
 201         updateGridSize(showPreview, m_controller->showAdditionalInfo());
 202     }
 203 }
 204
 205 bool DolphinIconsView::isZoomInPossible() const
 206 {
 207     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 208     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 209     return size < K3Icon::SizeEnormous;
 210 }
 211
 212 bool DolphinIconsView::isZoomOutPossible() const
 213 {
 214     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 215     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 216     return size > K3Icon::SizeSmall;
 217 }
 218
 219 int DolphinIconsView::increasedIconSize(int size) const
 220 {
 221     // TODO: get rid of K3Icon sizes
 222     int incSize = 0;
 223     switch (size) {
 224     case K3Icon::SizeSmall:       incSize = K3Icon::SizeSmallMedium; break;
 225     case K3Icon::SizeSmallMedium: incSize = K3Icon::SizeMedium; break;
 226     case K3Icon::SizeMedium:      incSize = K3Icon::SizeLarge; break;
 227     case K3Icon::SizeLarge:       incSize = K3Icon::SizeHuge; break;
 228     case K3Icon::SizeHuge:        incSize = K3Icon::SizeEnormous; break;
 229     default: Q_ASSERT(false); break;
 230     }
 231     return incSize;
 232 }
 233
 234 int DolphinIconsView::decreasedIconSize(int size) const
 235 {
 236     // TODO: get rid of K3Icon sizes
 237     int decSize = 0;
 238     switch (size) {
 239     case K3Icon::SizeSmallMedium: decSize = K3Icon::SizeSmall; break;
 240     case K3Icon::SizeMedium: decSize = K3Icon::SizeSmallMedium; break;
 241     case K3Icon::SizeLarge: decSize = K3Icon::SizeMedium; break;
 242     case K3Icon::SizeHuge: decSize = K3Icon::SizeLarge; break;
 243     case K3Icon::SizeEnormous: decSize = K3Icon::SizeHuge; break;
 244     default: Q_ASSERT(false); break;
 245     }
 246     return decSize;
 247 }
 248
 249 void DolphinIconsView::updateGridSize(bool showPreview, bool showAdditionalInfo)
 250 {
 251     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 252     Q_ASSERT(settings != 0);
 253
 254     int gridWidth = settings->gridWidth();
 255     int gridHeight = settings->gridHeight();
 256     int size = settings->iconSize();
 257
 258     if (showPreview) {
 259         const int previewSize = settings->previewSize();
 260         const int diff = previewSize - size;
 261         Q_ASSERT(diff >= 0);
 262         gridWidth  += diff;
 263         gridHeight += diff;
 264
 265         size = previewSize;
 266     }
 267
 268     if (showAdditionalInfo) {
 269         gridHeight += m_viewOptions.font.pointSize() * 2;
 270     }
 271
 272     m_viewOptions.decorationSize = QSize(size, size);
 273     setGridSize(QSize(gridWidth, gridHeight));
 274
 275     m_controller->setZoomInPossible(isZoomInPossible());
 276     m_controller->setZoomOutPossible(isZoomOutPossible());
 277 }
 278
 279 #include "dolphiniconsview.moc"