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
  33 DolphinIconsView::DolphinIconsView(QWidget* parent, DolphinController* controller) :
  34     QListView(parent),
  35     m_controller(controller)
  36 {
  37     Q_ASSERT(controller != 0);
  38     setViewMode(QListView::IconMode);
  39     setResizeMode(QListView::Adjust);
  40
  41     viewport()->setAttribute(Qt::WA_Hover);
  42
  43     connect(this, SIGNAL(clicked(const QModelIndex&)),
  44             controller, SLOT(triggerItem(const QModelIndex&)));
  45     connect(controller, SIGNAL(showPreviewChanged(bool)),
  46             this, SLOT(updateGridSize(bool)));
  47     connect(controller, SIGNAL(zoomIn()),
  48             this, SLOT(zoomIn()));
  49     connect(controller, SIGNAL(zoomOut()),
  50             this, SLOT(zoomOut()));
  51
  52     // apply the icons mode settings to the widget
  53     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
  54     Q_ASSERT(settings != 0);
  55
  56     m_viewOptions = QListView::viewOptions();
  57     m_viewOptions.font = QFont(settings->fontFamily(), settings->fontSize());
  58
  59     updateGridSize(controller->showPreview());
  60
  61     if (settings->arrangement() == QListView::TopToBottom) {
  62         setFlow(QListView::LeftToRight);
  63         m_viewOptions.decorationPosition = QStyleOptionViewItem::Top;
  64     }
  65     else {
  66         setFlow(QListView::TopToBottom);
  67         m_viewOptions.decorationPosition = QStyleOptionViewItem::Left;
  68     }
  69
  70     KFileItemDelegate* delegate = new KFileItemDelegate(parent);
  71     const KFileItemDelegate::AdditionalInformation info =
  72         static_cast<KFileItemDelegate::AdditionalInformation>(settings->additionalInfo());
  73     delegate->setAdditionalInformation(info);
  74     setItemDelegate(delegate);
  75 }
  76
  77 DolphinIconsView::~DolphinIconsView()
  78 {
  79 }
  80
  81 QStyleOptionViewItem DolphinIconsView::viewOptions() const
  82 {
  83     return m_viewOptions;
  84 }
  85
  86 void DolphinIconsView::contextMenuEvent(QContextMenuEvent* event)
  87 {
  88     QListView::contextMenuEvent(event);
  89     m_controller->triggerContextMenuRequest(event->pos());
  90 }
  91
  92 void DolphinIconsView::mouseReleaseEvent(QMouseEvent* event)
  93 {
  94     QListView::mouseReleaseEvent(event);
  95     m_controller->triggerActivation();
  96 }
  97
  98 void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)
  99 {
 100     if (event->mimeData()->hasUrls()) {
 101         event->acceptProposedAction();
 102     }
 103 }
 104
 105 void DolphinIconsView::dropEvent(QDropEvent* event)
 106 {
 107     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 108     if (urls.isEmpty() || (event->source() == this)) {
 109         QListView::dropEvent(event);
 110     }
 111     else {
 112         event->acceptProposedAction();
 113         m_controller->indicateDroppedUrls(urls, event->pos());
 114     }
 115 }
 116
 117 void DolphinIconsView::updateGridSize(bool showPreview)
 118 {
 119     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 120     Q_ASSERT(settings != 0);
 121
 122     int gridWidth = settings->gridWidth();
 123     int gridHeight = settings->gridHeight();
 124     int size = settings->iconSize();
 125
 126     if (showPreview) {
 127         const int previewSize = settings->previewSize();
 128         const int diff = previewSize - size;
 129         Q_ASSERT(diff >= 0);
 130         gridWidth += diff;
 131         gridHeight += diff;
 132
 133         size = previewSize;
 134      }
 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 bool showPreview = m_controller->showPreview();
 150         if (showPreview) {
 151             const int previewSize = increasedIconSize(settings->previewSize());
 152             settings->setPreviewSize(previewSize);
 153         }
 154         else {
 155             const int iconSize = increasedIconSize(settings->iconSize());
 156             settings->setIconSize(iconSize);
 157             if (settings->previewSize() < iconSize) {
 158                 // assure that the preview size is always >= the icon size
 159                 settings->setPreviewSize(iconSize);
 160             }
 161         }
 162
 163         updateGridSize(showPreview);
 164     }
 165 }
 166
 167 void DolphinIconsView::zoomOut()
 168 {
 169     if (isZoomOutPossible()) {
 170         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 171
 172         const bool showPreview = m_controller->showPreview();
 173         if (showPreview) {
 174             const int previewSize = decreasedIconSize(settings->previewSize());
 175             settings->setPreviewSize(previewSize);
 176             if (settings->iconSize() > previewSize) {
 177                 // assure that the icon size is always <= the preview size
 178                 settings->setIconSize(previewSize);
 179             }
 180         }
 181         else {
 182             const int iconSize = decreasedIconSize(settings->iconSize());
 183             settings->setIconSize(iconSize);
 184         }
 185
 186         updateGridSize(showPreview);
 187     }
 188 }
 189
 190 bool DolphinIconsView::isZoomInPossible() const
 191 {
 192     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 193     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 194     return size < K3Icon::SizeEnormous;
 195 }
 196
 197 bool DolphinIconsView::isZoomOutPossible() const
 198 {
 199     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 200     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 201     return size > K3Icon::SizeSmall;
 202 }
 203
 204 int DolphinIconsView::increasedIconSize(int size) const
 205 {
 206     // TODO: get rid of K3Icon sizes
 207     int incSize = 0;
 208     switch (size) {
 209         case K3Icon::SizeSmall:       incSize = K3Icon::SizeSmallMedium; break;
 210         case K3Icon::SizeSmallMedium: incSize = K3Icon::SizeMedium; break;
 211         case K3Icon::SizeMedium:      incSize = K3Icon::SizeLarge; break;
 212         case K3Icon::SizeLarge:       incSize = K3Icon::SizeHuge; break;
 213         case K3Icon::SizeHuge:        incSize = K3Icon::SizeEnormous; break;
 214         default: Q_ASSERT(false); break;
 215     }
 216     return incSize;
 217 }
 218
 219 int DolphinIconsView::decreasedIconSize(int size) const
 220 {
 221     // TODO: get rid of K3Icon sizes
 222     int decSize = 0;
 223     switch (size) {
 224         case K3Icon::SizeSmallMedium: decSize = K3Icon::SizeSmall; break;
 225         case K3Icon::SizeMedium: decSize = K3Icon::SizeSmallMedium; break;
 226         case K3Icon::SizeLarge: decSize = K3Icon::SizeMedium; break;
 227         case K3Icon::SizeHuge: decSize = K3Icon::SizeLarge; break;
 228         case K3Icon::SizeEnormous: decSize = K3Icon::SizeHuge; break;
 229         default: Q_ASSERT(false); break;
 230     }
 231     return decSize;
 232 }
 233
 234 #include "dolphiniconsview.moc"