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
  25 #include "dolphin_iconsmodesettings.h"
  26
  27 #include <kdirmodel.h>
  28 #include <kfileitem.h>
  29 #include <kfileitemdelegate.h>
  30
  31 #include <QAbstractProxyModel>
  32 #include <QPoint>
  33
  34 DolphinIconsView::DolphinIconsView(QWidget* parent, DolphinController* controller) :
  35     QListView(parent),
  36     m_controller(controller)
  37 {
  38     Q_ASSERT(controller != 0);
  39     setViewMode(QListView::IconMode);
  40     setResizeMode(QListView::Adjust);
  41
  42     viewport()->setAttribute(Qt::WA_Hover);
  43
  44     connect(this, SIGNAL(clicked(const QModelIndex&)),
  45             controller, SLOT(triggerItem(const QModelIndex&)));
  46     connect(this, SIGNAL(activated(const QModelIndex&)),
  47             controller, SLOT(triggerItem(const QModelIndex&)));
  48     connect(controller, SIGNAL(showPreviewChanged(bool)),
  49             this, SLOT(updateGridSize(bool)));
  50     connect(controller, SIGNAL(zoomIn()),
  51             this, SLOT(zoomIn()));
  52     connect(controller, SIGNAL(zoomOut()),
  53             this, SLOT(zoomOut()));
  54
  55     // apply the icons mode settings to the widget
  56     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
  57     Q_ASSERT(settings != 0);
  58
  59     m_viewOptions = QListView::viewOptions();
  60
  61     QFont font(settings->fontFamily(), settings->fontSize());
  62     font.setItalic(settings->italicFont());
  63     font.setBold(settings->boldFont());
  64     m_viewOptions.font = font;
  65
  66     updateGridSize(controller->showPreview());
  67
  68     if (settings->arrangement() == QListView::TopToBottom) {
  69         setFlow(QListView::LeftToRight);
  70         m_viewOptions.decorationPosition = QStyleOptionViewItem::Top;
  71     }
  72     else {
  73         setFlow(QListView::TopToBottom);
  74         m_viewOptions.decorationPosition = QStyleOptionViewItem::Left;
  75     }
  76 }
  77
  78 DolphinIconsView::~DolphinIconsView()
  79 {
  80 }
  81
  82 QStyleOptionViewItem DolphinIconsView::viewOptions() const
  83 {
  84     return m_viewOptions;
  85 }
  86
  87 void DolphinIconsView::contextMenuEvent(QContextMenuEvent* event)
  88 {
  89     QListView::contextMenuEvent(event);
  90     m_controller->triggerContextMenuRequest(event->pos());
  91 }
  92
  93 void DolphinIconsView::mouseReleaseEvent(QMouseEvent* event)
  94 {
  95     QListView::mouseReleaseEvent(event);
  96     m_controller->triggerActivation();
  97 }
  98
  99 void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)
 100 {
 101     if (event->mimeData()->hasUrls()) {
 102         event->acceptProposedAction();
 103     }
 104 }
 105
 106 void DolphinIconsView::dropEvent(QDropEvent* event)
 107 {
 108     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 109     if (!urls.isEmpty()) {
 110         m_controller->indicateDroppedUrls(urls,
 111                                           indexAt(event->pos()),
 112                                           event->source());
 113         event->acceptProposedAction();
 114     }
 115     QListView::dropEvent(event);
 116 }
 117
 118 void DolphinIconsView::updateGridSize(bool showPreview)
 119 {
 120     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 121     Q_ASSERT(settings != 0);
 122
 123     int gridWidth = settings->gridWidth();
 124     int gridHeight = settings->gridHeight();
 125     int size = settings->iconSize();
 126
 127     if (showPreview) {
 128         const int previewSize = settings->previewSize();
 129         const int diff = previewSize - size;
 130         Q_ASSERT(diff >= 0);
 131         gridWidth  += diff;
 132         gridHeight += diff;
 133
 134         size = previewSize;
 135     }
 136
 137     m_viewOptions.decorationSize = QSize(size, size);
 138     setGridSize(QSize(gridWidth, gridHeight));
 139
 140     m_controller->setZoomInPossible(isZoomInPossible());
 141     m_controller->setZoomOutPossible(isZoomOutPossible());
 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         }
 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);
 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         }
 193         else {
 194             newIconSize = decreasedIconSize(settings->iconSize());
 195             settings->setIconSize(newIconSize);
 196         }
 197
 198         // decrease also the grid size
 199         const int diff = oldIconSize - newIconSize;
 200         settings->setGridWidth(settings->gridWidth() - diff);
 201         settings->setGridHeight(settings->gridHeight() - diff);
 202
 203         updateGridSize(showPreview);
 204     }
 205 }
 206
 207 bool DolphinIconsView::isZoomInPossible() const
 208 {
 209     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 210     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 211     return size < K3Icon::SizeEnormous;
 212 }
 213
 214 bool DolphinIconsView::isZoomOutPossible() const
 215 {
 216     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 217     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 218     return size > K3Icon::SizeSmall;
 219 }
 220
 221 int DolphinIconsView::increasedIconSize(int size) const
 222 {
 223     // TODO: get rid of K3Icon sizes
 224     int incSize = 0;
 225     switch (size) {
 226         case K3Icon::SizeSmall:       incSize = K3Icon::SizeSmallMedium; break;
 227         case K3Icon::SizeSmallMedium: incSize = K3Icon::SizeMedium; break;
 228         case K3Icon::SizeMedium:      incSize = K3Icon::SizeLarge; break;
 229         case K3Icon::SizeLarge:       incSize = K3Icon::SizeHuge; break;
 230         case K3Icon::SizeHuge:        incSize = K3Icon::SizeEnormous; break;
 231         default: Q_ASSERT(false); break;
 232     }
 233     return incSize;
 234 }
 235
 236 int DolphinIconsView::decreasedIconSize(int size) const
 237 {
 238     // TODO: get rid of K3Icon sizes
 239     int decSize = 0;
 240     switch (size) {
 241         case K3Icon::SizeSmallMedium: decSize = K3Icon::SizeSmall; break;
 242         case K3Icon::SizeMedium: decSize = K3Icon::SizeSmallMedium; break;
 243         case K3Icon::SizeLarge: decSize = K3Icon::SizeMedium; break;
 244         case K3Icon::SizeHuge: decSize = K3Icon::SizeLarge; break;
 245         case K3Icon::SizeEnormous: decSize = K3Icon::SizeHuge; break;
 246         default: Q_ASSERT(false); break;
 247     }
 248     return decSize;
 249 }
 250
 251 #include "dolphiniconsview.moc"