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     m_viewOptions.font = QFont(settings->fontFamily(), settings->fontSize());
  61
  62     updateGridSize(controller->showPreview());
  63
  64     if (settings->arrangement() == QListView::TopToBottom) {
  65         setFlow(QListView::LeftToRight);
  66         m_viewOptions.decorationPosition = QStyleOptionViewItem::Top;
  67     }
  68     else {
  69         setFlow(QListView::TopToBottom);
  70         m_viewOptions.decorationPosition = QStyleOptionViewItem::Left;
  71     }
  72
  73     KFileItemDelegate* delegate = new KFileItemDelegate(parent);
  74     const KFileItemDelegate::AdditionalInformation info =
  75         static_cast<KFileItemDelegate::AdditionalInformation>(settings->additionalInfo());
  76     delegate->setAdditionalInformation(info);
  77     setItemDelegate(delegate);
  78 }
  79
  80 DolphinIconsView::~DolphinIconsView()
  81 {
  82 }
  83
  84 QStyleOptionViewItem DolphinIconsView::viewOptions() const
  85 {
  86     return m_viewOptions;
  87 }
  88
  89 void DolphinIconsView::contextMenuEvent(QContextMenuEvent* event)
  90 {
  91     QListView::contextMenuEvent(event);
  92     m_controller->triggerContextMenuRequest(event->pos());
  93 }
  94
  95 void DolphinIconsView::mouseReleaseEvent(QMouseEvent* event)
  96 {
  97     QListView::mouseReleaseEvent(event);
  98     m_controller->triggerActivation();
  99 }
 100
 101 void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)
 102 {
 103     if (event->mimeData()->hasUrls()) {
 104         event->acceptProposedAction();
 105     }
 106 }
 107
 108 void DolphinIconsView::dropEvent(QDropEvent* event)
 109 {
 110     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 111     if (!urls.isEmpty()) {
 112         m_controller->indicateDroppedUrls(urls,
 113                                           indexAt(event->pos()),
 114                                           event->source());
 115         event->acceptProposedAction();
 116     }
 117     QListView::dropEvent(event);
 118 }
 119
 120 void DolphinIconsView::updateGridSize(bool showPreview)
 121 {
 122     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 123     Q_ASSERT(settings != 0);
 124
 125     int gridWidth = settings->gridWidth();
 126     int gridHeight = settings->gridHeight();
 127     int size = settings->iconSize();
 128
 129     if (showPreview) {
 130         const int previewSize = settings->previewSize();
 131         const int diff = previewSize - size;
 132         Q_ASSERT(diff >= 0);
 133         gridWidth += diff;
 134         gridHeight += diff;
 135
 136         size = previewSize;
 137      }
 138
 139
 140     m_viewOptions.decorationSize = QSize(size, size);
 141     setGridSize(QSize(gridWidth, gridHeight));
 142
 143     m_controller->setZoomInPossible(isZoomInPossible());
 144     m_controller->setZoomOutPossible(isZoomOutPossible());
 145 }
 146
 147 void DolphinIconsView::zoomIn()
 148 {
 149     if (isZoomInPossible()) {
 150         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 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             const int iconSize = increasedIconSize(settings->iconSize());
 159             settings->setIconSize(iconSize);
 160             if (settings->previewSize() < iconSize) {
 161                 // assure that the preview size is always >= the icon size
 162                 settings->setPreviewSize(iconSize);
 163             }
 164         }
 165
 166         updateGridSize(showPreview);
 167     }
 168 }
 169
 170 void DolphinIconsView::zoomOut()
 171 {
 172     if (isZoomOutPossible()) {
 173         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 174
 175         const bool showPreview = m_controller->showPreview();
 176         if (showPreview) {
 177             const int previewSize = decreasedIconSize(settings->previewSize());
 178             settings->setPreviewSize(previewSize);
 179             if (settings->iconSize() > previewSize) {
 180                 // assure that the icon size is always <= the preview size
 181                 settings->setIconSize(previewSize);
 182             }
 183         }
 184         else {
 185             const int iconSize = decreasedIconSize(settings->iconSize());
 186             settings->setIconSize(iconSize);
 187         }
 188
 189         updateGridSize(showPreview);
 190     }
 191 }
 192
 193 bool DolphinIconsView::isZoomInPossible() const
 194 {
 195     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 196     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 197     return size < K3Icon::SizeEnormous;
 198 }
 199
 200 bool DolphinIconsView::isZoomOutPossible() const
 201 {
 202     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 203     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 204     return size > K3Icon::SizeSmall;
 205 }
 206
 207 int DolphinIconsView::increasedIconSize(int size) const
 208 {
 209     // TODO: get rid of K3Icon sizes
 210     int incSize = 0;
 211     switch (size) {
 212         case K3Icon::SizeSmall:       incSize = K3Icon::SizeSmallMedium; break;
 213         case K3Icon::SizeSmallMedium: incSize = K3Icon::SizeMedium; break;
 214         case K3Icon::SizeMedium:      incSize = K3Icon::SizeLarge; break;
 215         case K3Icon::SizeLarge:       incSize = K3Icon::SizeHuge; break;
 216         case K3Icon::SizeHuge:        incSize = K3Icon::SizeEnormous; break;
 217         default: Q_ASSERT(false); break;
 218     }
 219     return incSize;
 220 }
 221
 222 int DolphinIconsView::decreasedIconSize(int size) const
 223 {
 224     // TODO: get rid of K3Icon sizes
 225     int decSize = 0;
 226     switch (size) {
 227         case K3Icon::SizeSmallMedium: decSize = K3Icon::SizeSmall; break;
 228         case K3Icon::SizeMedium: decSize = K3Icon::SizeSmallMedium; break;
 229         case K3Icon::SizeLarge: decSize = K3Icon::SizeMedium; break;
 230         case K3Icon::SizeHuge: decSize = K3Icon::SizeLarge; break;
 231         case K3Icon::SizeEnormous: decSize = K3Icon::SizeHuge; break;
 232         default: Q_ASSERT(false); break;
 233     }
 234     return decSize;
 235 }
 236
 237 #include "dolphiniconsview.moc"