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(this, SIGNAL(activated(const QModelIndex&)),
  46             controller, SLOT(triggerItem(const QModelIndex&)));
  47     connect(controller, SIGNAL(showPreviewChanged(bool)),
  48             this, SLOT(updateGridSize(bool)));
  49     connect(controller, SIGNAL(zoomIn()),
  50             this, SLOT(zoomIn()));
  51     connect(controller, SIGNAL(zoomOut()),
  52             this, SLOT(zoomOut()));
  53
  54     // apply the icons mode settings to the widget
  55     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
  56     Q_ASSERT(settings != 0);
  57
  58     m_viewOptions = QListView::viewOptions();
  59     m_viewOptions.font = QFont(settings->fontFamily(), settings->fontSize());
  60
  61     updateGridSize(controller->showPreview());
  62
  63     if (settings->arrangement() == QListView::TopToBottom) {
  64         setFlow(QListView::LeftToRight);
  65         m_viewOptions.decorationPosition = QStyleOptionViewItem::Top;
  66     }
  67     else {
  68         setFlow(QListView::TopToBottom);
  69         m_viewOptions.decorationPosition = QStyleOptionViewItem::Left;
  70     }
  71
  72     KFileItemDelegate* delegate = new KFileItemDelegate(parent);
  73     const KFileItemDelegate::AdditionalInformation info =
  74         static_cast<KFileItemDelegate::AdditionalInformation>(settings->additionalInfo());
  75     delegate->setAdditionalInformation(info);
  76     setItemDelegate(delegate);
  77 }
  78
  79 DolphinIconsView::~DolphinIconsView()
  80 {
  81 }
  82
  83 QStyleOptionViewItem DolphinIconsView::viewOptions() const
  84 {
  85     return m_viewOptions;
  86 }
  87
  88 void DolphinIconsView::contextMenuEvent(QContextMenuEvent* event)
  89 {
  90     QListView::contextMenuEvent(event);
  91     m_controller->triggerContextMenuRequest(event->pos());
  92 }
  93
  94 void DolphinIconsView::mouseReleaseEvent(QMouseEvent* event)
  95 {
  96     QListView::mouseReleaseEvent(event);
  97     m_controller->triggerActivation();
  98 }
  99
 100 void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)
 101 {
 102     if (event->mimeData()->hasUrls()) {
 103         event->acceptProposedAction();
 104     }
 105 }
 106
 107 void DolphinIconsView::dropEvent(QDropEvent* event)
 108 {
 109     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 110     if (urls.isEmpty() || (event->source() == this)) {
 111         QListView::dropEvent(event);
 112     }
 113     else {
 114         event->acceptProposedAction();
 115         m_controller->indicateDroppedUrls(urls, event->pos());
 116     }
 117 }
 118
 119 void DolphinIconsView::updateGridSize(bool showPreview)
 120 {
 121     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 122     Q_ASSERT(settings != 0);
 123
 124     int gridWidth = settings->gridWidth();
 125     int gridHeight = settings->gridHeight();
 126     int size = settings->iconSize();
 127
 128     if (showPreview) {
 129         const int previewSize = settings->previewSize();
 130         const int diff = previewSize - size;
 131         Q_ASSERT(diff >= 0);
 132         gridWidth += diff;
 133         gridHeight += diff;
 134
 135         size = previewSize;
 136      }
 137
 138
 139     m_viewOptions.decorationSize = QSize(size, size);
 140     setGridSize(QSize(gridWidth, gridHeight));
 141
 142     m_controller->setZoomInPossible(isZoomInPossible());
 143     m_controller->setZoomOutPossible(isZoomOutPossible());
 144 }
 145
 146 void DolphinIconsView::zoomIn()
 147 {
 148     if (isZoomInPossible()) {
 149         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 150
 151         const bool showPreview = m_controller->showPreview();
 152         if (showPreview) {
 153             const int previewSize = increasedIconSize(settings->previewSize());
 154             settings->setPreviewSize(previewSize);
 155         }
 156         else {
 157             const int iconSize = increasedIconSize(settings->iconSize());
 158             settings->setIconSize(iconSize);
 159             if (settings->previewSize() < iconSize) {
 160                 // assure that the preview size is always >= the icon size
 161                 settings->setPreviewSize(iconSize);
 162             }
 163         }
 164
 165         updateGridSize(showPreview);
 166     }
 167 }
 168
 169 void DolphinIconsView::zoomOut()
 170 {
 171     if (isZoomOutPossible()) {
 172         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 173
 174         const bool showPreview = m_controller->showPreview();
 175         if (showPreview) {
 176             const int previewSize = decreasedIconSize(settings->previewSize());
 177             settings->setPreviewSize(previewSize);
 178             if (settings->iconSize() > previewSize) {
 179                 // assure that the icon size is always <= the preview size
 180                 settings->setIconSize(previewSize);
 181             }
 182         }
 183         else {
 184             const int iconSize = decreasedIconSize(settings->iconSize());
 185             settings->setIconSize(iconSize);
 186         }
 187
 188         updateGridSize(showPreview);
 189     }
 190 }
 191
 192 bool DolphinIconsView::isZoomInPossible() const
 193 {
 194     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 195     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 196     return size < K3Icon::SizeEnormous;
 197 }
 198
 199 bool DolphinIconsView::isZoomOutPossible() const
 200 {
 201     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 202     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 203     return size > K3Icon::SizeSmall;
 204 }
 205
 206 int DolphinIconsView::increasedIconSize(int size) const
 207 {
 208     // TODO: get rid of K3Icon sizes
 209     int incSize = 0;
 210     switch (size) {
 211         case K3Icon::SizeSmall:       incSize = K3Icon::SizeSmallMedium; break;
 212         case K3Icon::SizeSmallMedium: incSize = K3Icon::SizeMedium; break;
 213         case K3Icon::SizeMedium:      incSize = K3Icon::SizeLarge; break;
 214         case K3Icon::SizeLarge:       incSize = K3Icon::SizeHuge; break;
 215         case K3Icon::SizeHuge:        incSize = K3Icon::SizeEnormous; break;
 216         default: Q_ASSERT(false); break;
 217     }
 218     return incSize;
 219 }
 220
 221 int DolphinIconsView::decreasedIconSize(int size) const
 222 {
 223     // TODO: get rid of K3Icon sizes
 224     int decSize = 0;
 225     switch (size) {
 226         case K3Icon::SizeSmallMedium: decSize = K3Icon::SizeSmall; break;
 227         case K3Icon::SizeMedium: decSize = K3Icon::SizeSmallMedium; break;
 228         case K3Icon::SizeLarge: decSize = K3Icon::SizeMedium; break;
 229         case K3Icon::SizeHuge: decSize = K3Icon::SizeLarge; break;
 230         case K3Icon::SizeEnormous: decSize = K3Icon::SizeHuge; break;
 231         default: Q_ASSERT(false); break;
 232     }
 233     return decSize;
 234 }
 235
 236 #include "dolphiniconsview.moc"