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     connect(this, SIGNAL(clicked(const QModelIndex&)),
  42             controller, SLOT(triggerItem(const QModelIndex&)));
  43     connect(controller, SIGNAL(showPreviewChanged(bool)),
  44             this, SLOT(updateGridSize(bool)));
  45     connect(controller, SIGNAL(zoomIn()),
  46             this, SLOT(zoomIn()));
  47     connect(controller, SIGNAL(zoomOut()),
  48             this, SLOT(zoomOut()));
  49
  50     // apply the icons mode settings to the widget
  51     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
  52     Q_ASSERT(settings != 0);
  53
  54     m_viewOptions = QListView::viewOptions();
  55     m_viewOptions.font = QFont(settings->fontFamily(), settings->fontSize());
  56
  57     updateGridSize(controller->showPreview());
  58
  59     if (settings->arrangement() == QListView::TopToBottom) {
  60         setFlow(QListView::LeftToRight);
  61         m_viewOptions.decorationPosition = QStyleOptionViewItem::Top;
  62     }
  63     else {
  64         setFlow(QListView::TopToBottom);
  65         m_viewOptions.decorationPosition = QStyleOptionViewItem::Left;
  66     }
  67
  68     KFileItemDelegate* delegate = new KFileItemDelegate(parent);
  69     const KFileItemDelegate::AdditionalInformation info =
  70         static_cast<KFileItemDelegate::AdditionalInformation>(settings->additionalInfo());
  71     delegate->setAdditionalInformation(info);
  72     setItemDelegate(delegate);
  73 }
  74
  75 DolphinIconsView::~DolphinIconsView()
  76 {
  77 }
  78
  79 QStyleOptionViewItem DolphinIconsView::viewOptions() const
  80 {
  81     return m_viewOptions;
  82 }
  83
  84 void DolphinIconsView::contextMenuEvent(QContextMenuEvent* event)
  85 {
  86     QListView::contextMenuEvent(event);
  87     m_controller->triggerContextMenuRequest(event->pos());
  88 }
  89
  90 void DolphinIconsView::mouseReleaseEvent(QMouseEvent* event)
  91 {
  92     QListView::mouseReleaseEvent(event);
  93     m_controller->triggerActivation();
  94 }
  95
  96 void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)
  97 {
  98     if (event->mimeData()->hasUrls()) {
  99         event->acceptProposedAction();
 100     }
 101 }
 102
 103 void DolphinIconsView::dropEvent(QDropEvent* event)
 104 {
 105     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 106     if (urls.isEmpty() || (event->source() == this)) {
 107         QListView::dropEvent(event);
 108     }
 109     else {
 110         event->acceptProposedAction();
 111         m_controller->indicateDroppedUrls(urls, event->pos());
 112     }
 113 }
 114
 115 void DolphinIconsView::updateGridSize(bool showPreview)
 116 {
 117     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 118     Q_ASSERT(settings != 0);
 119
 120     int gridWidth = settings->gridWidth();
 121     int gridHeight = settings->gridHeight();
 122     int size = settings->iconSize();
 123
 124     if (showPreview) {
 125         const int previewSize = settings->previewSize();
 126         const int diff = previewSize - size;
 127         Q_ASSERT(diff >= 0);
 128         gridWidth += diff;
 129         gridHeight += diff;
 130
 131         size = previewSize;
 132      }
 133
 134
 135     m_viewOptions.decorationSize = QSize(size, size);
 136     setGridSize(QSize(gridWidth, gridHeight));
 137
 138     m_controller->setZoomInPossible(isZoomInPossible());
 139     m_controller->setZoomOutPossible(isZoomOutPossible());
 140 }
 141
 142 void DolphinIconsView::zoomIn()
 143 {
 144     if (isZoomInPossible()) {
 145         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 146
 147         const bool showPreview = m_controller->showPreview();
 148         if (showPreview) {
 149             const int previewSize = increasedIconSize(settings->previewSize());
 150             settings->setPreviewSize(previewSize);
 151         }
 152         else {
 153             const int iconSize = increasedIconSize(settings->iconSize());
 154             settings->setIconSize(iconSize);
 155             if (settings->previewSize() < iconSize) {
 156                 // assure that the preview size is always >= the icon size
 157                 settings->setPreviewSize(iconSize);
 158             }
 159         }
 160
 161         updateGridSize(showPreview);
 162     }
 163 }
 164
 165 void DolphinIconsView::zoomOut()
 166 {
 167     if (isZoomOutPossible()) {
 168         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 169
 170         const bool showPreview = m_controller->showPreview();
 171         if (showPreview) {
 172             const int previewSize = decreasedIconSize(settings->previewSize());
 173             settings->setPreviewSize(previewSize);
 174             if (settings->iconSize() > previewSize) {
 175                 // assure that the icon size is always <= the preview size
 176                 settings->setIconSize(previewSize);
 177             }
 178         }
 179         else {
 180             const int iconSize = decreasedIconSize(settings->iconSize());
 181             settings->setIconSize(iconSize);
 182         }
 183
 184         updateGridSize(showPreview);
 185     }
 186 }
 187
 188 bool DolphinIconsView::isZoomInPossible() const
 189 {
 190     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 191     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 192     return size < K3Icon::SizeEnormous;
 193 }
 194
 195 bool DolphinIconsView::isZoomOutPossible() const
 196 {
 197     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 198     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 199     return size > K3Icon::SizeSmall;
 200 }
 201
 202 int DolphinIconsView::increasedIconSize(int size) const
 203 {
 204     // TODO: get rid of K3Icon sizes
 205     int incSize = 0;
 206     switch (size) {
 207         case K3Icon::SizeSmall:       incSize = K3Icon::SizeSmallMedium; break;
 208         case K3Icon::SizeSmallMedium: incSize = K3Icon::SizeMedium; break;
 209         case K3Icon::SizeMedium:      incSize = K3Icon::SizeLarge; break;
 210         case K3Icon::SizeLarge:       incSize = K3Icon::SizeHuge; break;
 211         case K3Icon::SizeHuge:        incSize = K3Icon::SizeEnormous; break;
 212         default: Q_ASSERT(false); break;
 213     }
 214     return incSize;
 215 }
 216
 217 int DolphinIconsView::decreasedIconSize(int size) const
 218 {
 219     // TODO: get rid of K3Icon sizes
 220     int decSize = 0;
 221     switch (size) {
 222         case K3Icon::SizeSmallMedium: decSize = K3Icon::SizeSmall; break;
 223         case K3Icon::SizeMedium: decSize = K3Icon::SizeSmallMedium; break;
 224         case K3Icon::SizeLarge: decSize = K3Icon::SizeMedium; break;
 225         case K3Icon::SizeHuge: decSize = K3Icon::SizeLarge; break;
 226         case K3Icon::SizeEnormous: decSize = K3Icon::SizeHuge; break;
 227         default: Q_ASSERT(false); break;
 228     }
 229     return decSize;
 230 }
 231
 232 #include "dolphiniconsview.moc"