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
  74 DolphinIconsView::~DolphinIconsView()
  75 {
  76 }
  77
  78 QStyleOptionViewItem DolphinIconsView::viewOptions() const
  79 {
  80     return m_viewOptions;
  81 }
  82
  83 void DolphinIconsView::contextMenuEvent(QContextMenuEvent* event)
  84 {
  85     QListView::contextMenuEvent(event);
  86     m_controller->triggerContextMenuRequest(event->pos());
  87 }
  88
  89 void DolphinIconsView::mouseReleaseEvent(QMouseEvent* event)
  90 {
  91     QListView::mouseReleaseEvent(event);
  92     m_controller->triggerActivation();
  93 }
  94
  95 void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)
  96 {
  97     if (event->mimeData()->hasUrls()) {
  98         event->acceptProposedAction();
  99     }
 100 }
 101
 102 void DolphinIconsView::dropEvent(QDropEvent* event)
 103 {
 104     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 105     if (!urls.isEmpty()) {
 106         m_controller->indicateDroppedUrls(urls,
 107                                           indexAt(event->pos()),
 108                                           event->source());
 109         event->acceptProposedAction();
 110     }
 111     QListView::dropEvent(event);
 112 }
 113
 114 void DolphinIconsView::updateGridSize(bool showPreview)
 115 {
 116     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 117     Q_ASSERT(settings != 0);
 118
 119     int gridWidth = settings->gridWidth();
 120     int gridHeight = settings->gridHeight();
 121     int size = settings->iconSize();
 122
 123     if (showPreview) {
 124         const int previewSize = settings->previewSize();
 125         const int diff = previewSize - size;
 126         Q_ASSERT(diff >= 0);
 127         gridWidth += diff;
 128         gridHeight += diff;
 129
 130         size = previewSize;
 131      }
 132
 133
 134     m_viewOptions.decorationSize = QSize(size, size);
 135     setGridSize(QSize(gridWidth, gridHeight));
 136
 137     m_controller->setZoomInPossible(isZoomInPossible());
 138     m_controller->setZoomOutPossible(isZoomOutPossible());
 139 }
 140
 141 void DolphinIconsView::zoomIn()
 142 {
 143     if (isZoomInPossible()) {
 144         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 145
 146         const bool showPreview = m_controller->showPreview();
 147         if (showPreview) {
 148             const int previewSize = increasedIconSize(settings->previewSize());
 149             settings->setPreviewSize(previewSize);
 150         }
 151         else {
 152             const int iconSize = increasedIconSize(settings->iconSize());
 153             settings->setIconSize(iconSize);
 154             if (settings->previewSize() < iconSize) {
 155                 // assure that the preview size is always >= the icon size
 156                 settings->setPreviewSize(iconSize);
 157             }
 158         }
 159
 160         updateGridSize(showPreview);
 161     }
 162 }
 163
 164 void DolphinIconsView::zoomOut()
 165 {
 166     if (isZoomOutPossible()) {
 167         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 168
 169         const bool showPreview = m_controller->showPreview();
 170         if (showPreview) {
 171             const int previewSize = decreasedIconSize(settings->previewSize());
 172             settings->setPreviewSize(previewSize);
 173             if (settings->iconSize() > previewSize) {
 174                 // assure that the icon size is always <= the preview size
 175                 settings->setIconSize(previewSize);
 176             }
 177         }
 178         else {
 179             const int iconSize = decreasedIconSize(settings->iconSize());
 180             settings->setIconSize(iconSize);
 181         }
 182
 183         updateGridSize(showPreview);
 184     }
 185 }
 186
 187 bool DolphinIconsView::isZoomInPossible() const
 188 {
 189     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 190     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 191     return size < K3Icon::SizeEnormous;
 192 }
 193
 194 bool DolphinIconsView::isZoomOutPossible() const
 195 {
 196     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 197     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 198     return size > K3Icon::SizeSmall;
 199 }
 200
 201 int DolphinIconsView::increasedIconSize(int size) const
 202 {
 203     // TODO: get rid of K3Icon sizes
 204     int incSize = 0;
 205     switch (size) {
 206         case K3Icon::SizeSmall:       incSize = K3Icon::SizeSmallMedium; break;
 207         case K3Icon::SizeSmallMedium: incSize = K3Icon::SizeMedium; break;
 208         case K3Icon::SizeMedium:      incSize = K3Icon::SizeLarge; break;
 209         case K3Icon::SizeLarge:       incSize = K3Icon::SizeHuge; break;
 210         case K3Icon::SizeHuge:        incSize = K3Icon::SizeEnormous; break;
 211         default: Q_ASSERT(false); break;
 212     }
 213     return incSize;
 214 }
 215
 216 int DolphinIconsView::decreasedIconSize(int size) const
 217 {
 218     // TODO: get rid of K3Icon sizes
 219     int decSize = 0;
 220     switch (size) {
 221         case K3Icon::SizeSmallMedium: decSize = K3Icon::SizeSmall; break;
 222         case K3Icon::SizeMedium: decSize = K3Icon::SizeSmallMedium; break;
 223         case K3Icon::SizeLarge: decSize = K3Icon::SizeMedium; break;
 224         case K3Icon::SizeHuge: decSize = K3Icon::SizeLarge; break;
 225         case K3Icon::SizeEnormous: decSize = K3Icon::SizeHuge; break;
 226         default: Q_ASSERT(false); break;
 227     }
 228     return decSize;
 229 }
 230
 231 #include "dolphiniconsview.moc"