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 <QAbstractProxyModel>
  33 #include <QApplication>
  34 #include <QPoint>
  35
  36 DolphinIconsView::DolphinIconsView(QWidget* parent, DolphinController* controller) :
  37     KListView(parent),
  38     m_controller(controller)
  39 {
  40     Q_ASSERT(controller != 0);
  41     setViewMode(QListView::IconMode);
  42     setResizeMode(QListView::Adjust);
  43
  44     setMouseTracking(true);
  45     viewport()->setAttribute(Qt::WA_Hover);
  46
  47     if (KGlobalSettings::singleClick()) {
  48         connect(this, SIGNAL(clicked(const QModelIndex&)),
  49                 controller, SLOT(triggerItem(const QModelIndex&)));
  50     } else {
  51         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
  52                 controller, SLOT(triggerItem(const QModelIndex&)));
  53     }
  54     connect(this, SIGNAL(activated(const QModelIndex&)),
  55             controller, SLOT(triggerItem(const QModelIndex&)));
  56     connect(this, SIGNAL(entered(const QModelIndex&)),
  57             controller, SLOT(emitItemEntered(const QModelIndex&)));
  58     connect(this, SIGNAL(viewportEntered()),
  59             controller, SLOT(emitViewportEntered()));
  60     connect(controller, SIGNAL(showPreviewChanged(bool)),
  61             this, SLOT(slotShowPreviewChanged(bool)));
  62     connect(controller, SIGNAL(showAdditionalInfoChanged(bool)),
  63             this, SLOT(slotShowAdditionalInfoChanged(bool)));
  64     connect(controller, SIGNAL(zoomIn()),
  65             this, SLOT(zoomIn()));
  66     connect(controller, SIGNAL(zoomOut()),
  67             this, SLOT(zoomOut()));
  68
  69     // apply the icons mode settings to the widget
  70     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
  71     Q_ASSERT(settings != 0);
  72
  73     m_viewOptions = KListView::viewOptions();
  74     m_viewOptions.showDecorationSelected = true;
  75
  76     QFont font(settings->fontFamily(), settings->fontSize());
  77     font.setItalic(settings->italicFont());
  78     font.setBold(settings->boldFont());
  79     m_viewOptions.font = font;
  80
  81     setWordWrap(settings->numberOfTextlines() > 1);
  82     updateGridSize(controller->showPreview(), controller->showAdditionalInfo());
  83
  84     if (settings->arrangement() == QListView::TopToBottom) {
  85         setFlow(QListView::LeftToRight);
  86         m_viewOptions.decorationPosition = QStyleOptionViewItem::Top;
  87     } else {
  88         setFlow(QListView::TopToBottom);
  89         m_viewOptions.decorationPosition = QStyleOptionViewItem::Left;
  90         m_viewOptions.displayAlignment = Qt::AlignLeft | Qt::AlignVCenter;
  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::mousePressEvent(QMouseEvent* event)
 110 {
 111     if (!indexAt(event->pos()).isValid()) {
 112         const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
 113         if (!(modifier & Qt::ShiftModifier) && !(modifier & Qt::ControlModifier)) {
 114             clearSelection();
 115         }
 116     }
 117
 118     KListView::mousePressEvent(event);
 119 }
 120
 121 void DolphinIconsView::mouseReleaseEvent(QMouseEvent* event)
 122 {
 123     KListView::mouseReleaseEvent(event);
 124     m_controller->triggerActivation();
 125 }
 126
 127 void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)
 128 {
 129     if (event->mimeData()->hasUrls()) {
 130         event->acceptProposedAction();
 131     }
 132 }
 133
 134 void DolphinIconsView::dropEvent(QDropEvent* event)
 135 {
 136     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 137     if (!urls.isEmpty()) {
 138         m_controller->indicateDroppedUrls(urls,
 139                                           indexAt(event->pos()),
 140                                           event->source());
 141         event->acceptProposedAction();
 142     }
 143     KListView::dropEvent(event);
 144 }
 145
 146 void DolphinIconsView::slotShowPreviewChanged(bool showPreview)
 147 {
 148     updateGridSize(showPreview, m_controller->showAdditionalInfo());
 149 }
 150
 151 void DolphinIconsView::slotShowAdditionalInfoChanged(bool showAdditionalInfo)
 152 {
 153     updateGridSize(m_controller->showPreview(), showAdditionalInfo);
 154 }
 155
 156 void DolphinIconsView::zoomIn()
 157 {
 158     if (isZoomInPossible()) {
 159         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 160
 161         const int oldIconSize = settings->iconSize();
 162         int newIconSize = oldIconSize;
 163
 164         const bool showPreview = m_controller->showPreview();
 165         if (showPreview) {
 166             const int previewSize = increasedIconSize(settings->previewSize());
 167             settings->setPreviewSize(previewSize);
 168         } else {
 169             newIconSize = increasedIconSize(oldIconSize);
 170             settings->setIconSize(newIconSize);
 171             if (settings->previewSize() < newIconSize) {
 172                 // assure that the preview size is always >= the icon size
 173                 settings->setPreviewSize(newIconSize);
 174             }
 175         }
 176
 177         // increase also the grid size
 178         const int diff = newIconSize - oldIconSize;
 179         settings->setItemWidth(settings->itemWidth() + diff);
 180         settings->setItemHeight(settings->itemHeight() + diff);
 181
 182         updateGridSize(showPreview, m_controller->showAdditionalInfo());
 183     }
 184 }
 185
 186 void DolphinIconsView::zoomOut()
 187 {
 188     if (isZoomOutPossible()) {
 189         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 190
 191         const int oldIconSize = settings->iconSize();
 192         int newIconSize = oldIconSize;
 193
 194         const bool showPreview = m_controller->showPreview();
 195         if (showPreview) {
 196             const int previewSize = decreasedIconSize(settings->previewSize());
 197             settings->setPreviewSize(previewSize);
 198             if (settings->iconSize() > previewSize) {
 199                 // assure that the icon size is always <= the preview size
 200                 newIconSize = previewSize;
 201                 settings->setIconSize(newIconSize);
 202             }
 203         } else {
 204             newIconSize = decreasedIconSize(settings->iconSize());
 205             settings->setIconSize(newIconSize);
 206         }
 207
 208         // decrease also the grid size
 209         const int diff = oldIconSize - newIconSize;
 210         settings->setItemWidth(settings->itemWidth() - diff);
 211         settings->setItemHeight(settings->itemHeight() - diff);
 212
 213         updateGridSize(showPreview, m_controller->showAdditionalInfo());
 214     }
 215 }
 216
 217 bool DolphinIconsView::isZoomInPossible() const
 218 {
 219     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 220     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 221     return size < K3Icon::SizeEnormous;
 222 }
 223
 224 bool DolphinIconsView::isZoomOutPossible() const
 225 {
 226     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 227     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 228     return size > K3Icon::SizeSmall;
 229 }
 230
 231 int DolphinIconsView::increasedIconSize(int size) const
 232 {
 233     // TODO: get rid of K3Icon sizes
 234     int incSize = 0;
 235     switch (size) {
 236     case K3Icon::SizeSmall:       incSize = K3Icon::SizeSmallMedium; break;
 237     case K3Icon::SizeSmallMedium: incSize = K3Icon::SizeMedium; break;
 238     case K3Icon::SizeMedium:      incSize = K3Icon::SizeLarge; break;
 239     case K3Icon::SizeLarge:       incSize = K3Icon::SizeHuge; break;
 240     case K3Icon::SizeHuge:        incSize = K3Icon::SizeEnormous; break;
 241     default: Q_ASSERT(false); break;
 242     }
 243     return incSize;
 244 }
 245
 246 int DolphinIconsView::decreasedIconSize(int size) const
 247 {
 248     // TODO: get rid of K3Icon sizes
 249     int decSize = 0;
 250     switch (size) {
 251     case K3Icon::SizeSmallMedium: decSize = K3Icon::SizeSmall; break;
 252     case K3Icon::SizeMedium: decSize = K3Icon::SizeSmallMedium; break;
 253     case K3Icon::SizeLarge: decSize = K3Icon::SizeMedium; break;
 254     case K3Icon::SizeHuge: decSize = K3Icon::SizeLarge; break;
 255     case K3Icon::SizeEnormous: decSize = K3Icon::SizeHuge; break;
 256     default: Q_ASSERT(false); break;
 257     }
 258     return decSize;
 259 }
 260
 261 void DolphinIconsView::updateGridSize(bool showPreview, bool showAdditionalInfo)
 262 {
 263     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 264     Q_ASSERT(settings != 0);
 265
 266     int itemWidth = settings->itemWidth();
 267     int itemHeight = settings->itemHeight();
 268     int size = settings->iconSize();
 269
 270     if (showPreview) {
 271         const int previewSize = settings->previewSize();
 272         const int diff = previewSize - size;
 273         Q_ASSERT(diff >= 0);
 274         itemWidth  += diff;
 275         itemHeight += diff;
 276
 277         size = previewSize;
 278     }
 279
 280     if (showAdditionalInfo) {
 281         itemHeight += m_viewOptions.font.pointSize() * 2;
 282     }
 283
 284     if (settings->arrangement() == QListView::TopToBottom) {
 285         // The decoration width indirectly defines the maximum
 286         // width for the text wrapping. To use the maximum item width
 287         // for text wrapping, it is used as decoration width.
 288         m_viewOptions.decorationSize = QSize(itemWidth, size);
 289     } else {
 290         m_viewOptions.decorationSize = QSize(size, size);
 291     }
 292
 293     const int spacing = settings->gridSpacing();
 294     setGridSize(QSize(itemWidth + spacing, itemHeight + spacing));
 295
 296     m_controller->setZoomInPossible(isZoomInPossible());
 297     m_controller->setZoomOutPossible(isZoomOutPossible());
 298 }
 299
 300 #include "dolphiniconsview.moc"