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     } else {
  72         setFlow(QListView::TopToBottom);
  73         m_viewOptions.decorationPosition = QStyleOptionViewItem::Left;
  74     }
  75 }
  76
  77 DolphinIconsView::~DolphinIconsView()
  78 {}
  79
  80 QStyleOptionViewItem DolphinIconsView::viewOptions() const
  81 {
  82     return m_viewOptions;
  83 }
  84
  85 void DolphinIconsView::contextMenuEvent(QContextMenuEvent* event)
  86 {
  87     QListView::contextMenuEvent(event);
  88     m_controller->triggerContextMenuRequest(event->pos());
  89 }
  90
  91 void DolphinIconsView::mouseReleaseEvent(QMouseEvent* event)
  92 {
  93     QListView::mouseReleaseEvent(event);
  94     m_controller->triggerActivation();
  95 }
  96
  97 void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)
  98 {
  99     if (event->mimeData()->hasUrls()) {
 100         event->acceptProposedAction();
 101     }
 102 }
 103
 104 void DolphinIconsView::dropEvent(QDropEvent* event)
 105 {
 106     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 107     if (!urls.isEmpty()) {
 108         m_controller->indicateDroppedUrls(urls,
 109                                           indexAt(event->pos()),
 110                                           event->source());
 111         event->acceptProposedAction();
 112     }
 113     QListView::dropEvent(event);
 114 }
 115
 116 void DolphinIconsView::updateGridSize(bool showPreview)
 117 {
 118     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 119     Q_ASSERT(settings != 0);
 120
 121     int gridWidth = settings->gridWidth();
 122     int gridHeight = settings->gridHeight();
 123     int size = settings->iconSize();
 124
 125     if (showPreview) {
 126         const int previewSize = settings->previewSize();
 127         const int diff = previewSize - size;
 128         Q_ASSERT(diff >= 0);
 129         gridWidth  += diff;
 130         gridHeight += diff;
 131
 132         size = previewSize;
 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 int oldIconSize = settings->iconSize();
 148         int newIconSize = oldIconSize;
 149
 150         const bool showPreview = m_controller->showPreview();
 151         if (showPreview) {
 152             const int previewSize = increasedIconSize(settings->previewSize());
 153             settings->setPreviewSize(previewSize);
 154         } else {
 155             newIconSize = increasedIconSize(oldIconSize);
 156             settings->setIconSize(newIconSize);
 157             if (settings->previewSize() < newIconSize) {
 158                 // assure that the preview size is always >= the icon size
 159                 settings->setPreviewSize(newIconSize);
 160             }
 161         }
 162
 163         // increase also the grid size
 164         const int diff = newIconSize - oldIconSize;
 165         settings->setGridWidth(settings->gridWidth() + diff);
 166         settings->setGridHeight(settings->gridHeight() + diff);
 167
 168         updateGridSize(showPreview);
 169     }
 170 }
 171
 172 void DolphinIconsView::zoomOut()
 173 {
 174     if (isZoomOutPossible()) {
 175         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 176
 177         const int oldIconSize = settings->iconSize();
 178         int newIconSize = oldIconSize;
 179
 180         const bool showPreview = m_controller->showPreview();
 181         if (showPreview) {
 182             const int previewSize = decreasedIconSize(settings->previewSize());
 183             settings->setPreviewSize(previewSize);
 184             if (settings->iconSize() > previewSize) {
 185                 // assure that the icon size is always <= the preview size
 186                 newIconSize = previewSize;
 187                 settings->setIconSize(newIconSize);
 188             }
 189         } else {
 190             newIconSize = decreasedIconSize(settings->iconSize());
 191             settings->setIconSize(newIconSize);
 192         }
 193
 194         // decrease also the grid size
 195         const int diff = oldIconSize - newIconSize;
 196         settings->setGridWidth(settings->gridWidth() - diff);
 197         settings->setGridHeight(settings->gridHeight() - diff);
 198
 199         updateGridSize(showPreview);
 200     }
 201 }
 202
 203 bool DolphinIconsView::isZoomInPossible() const
 204 {
 205     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 206     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 207     return size < K3Icon::SizeEnormous;
 208 }
 209
 210 bool DolphinIconsView::isZoomOutPossible() const
 211 {
 212     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 213     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 214     return size > K3Icon::SizeSmall;
 215 }
 216
 217 int DolphinIconsView::increasedIconSize(int size) const
 218 {
 219     // TODO: get rid of K3Icon sizes
 220     int incSize = 0;
 221     switch (size) {
 222     case K3Icon::SizeSmall:       incSize = K3Icon::SizeSmallMedium; break;
 223     case K3Icon::SizeSmallMedium: incSize = K3Icon::SizeMedium; break;
 224     case K3Icon::SizeMedium:      incSize = K3Icon::SizeLarge; break;
 225     case K3Icon::SizeLarge:       incSize = K3Icon::SizeHuge; break;
 226     case K3Icon::SizeHuge:        incSize = K3Icon::SizeEnormous; break;
 227     default: Q_ASSERT(false); break;
 228     }
 229     return incSize;
 230 }
 231
 232 int DolphinIconsView::decreasedIconSize(int size) const
 233 {
 234     // TODO: get rid of K3Icon sizes
 235     int decSize = 0;
 236     switch (size) {
 237     case K3Icon::SizeSmallMedium: decSize = K3Icon::SizeSmall; break;
 238     case K3Icon::SizeMedium: decSize = K3Icon::SizeSmallMedium; break;
 239     case K3Icon::SizeLarge: decSize = K3Icon::SizeMedium; break;
 240     case K3Icon::SizeHuge: decSize = K3Icon::SizeLarge; break;
 241     case K3Icon::SizeEnormous: decSize = K3Icon::SizeHuge; break;
 242     default: Q_ASSERT(false); break;
 243     }
 244     return decSize;
 245 }
 246
 247 #include "dolphiniconsview.moc"