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