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 #include "dolphinitemcategorizer.h"
  25
  26 #include "dolphin_iconsmodesettings.h"
  27
  28 #include <kdirmodel.h>
  29 #include <kfileitem.h>
  30 #include <kfileitemdelegate.h>
  31
  32 #include <QAbstractProxyModel>
  33 #include <QPoint>
  34
  35 DolphinIconsView::DolphinIconsView(QWidget* parent, DolphinController* controller) :
  36         KListView(parent),
  37         m_controller(controller)
  38 {
  39     Q_ASSERT(controller != 0);
  40     setViewMode(QListView::IconMode);
  41     setResizeMode(QListView::Adjust);
  42
  43     viewport()->setAttribute(Qt::WA_Hover);
  44
  45     connect(this, SIGNAL(clicked(const QModelIndex&)),
  46             controller, SLOT(triggerItem(const QModelIndex&)));
  47     connect(this, SIGNAL(activated(const QModelIndex&)),
  48             controller, SLOT(triggerItem(const QModelIndex&)));
  49     connect(controller, SIGNAL(showPreviewChanged(bool)),
  50             this, SLOT(updateGridSize(bool)));
  51     connect(controller, SIGNAL(zoomIn()),
  52             this, SLOT(zoomIn()));
  53     connect(controller, SIGNAL(zoomOut()),
  54             this, SLOT(zoomOut()));
  55
  56     // apply the icons mode settings to the widget
  57     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
  58     Q_ASSERT(settings != 0);
  59
  60     m_viewOptions = KListView::viewOptions();
  61
  62     QFont font(settings->fontFamily(), settings->fontSize());
  63     font.setItalic(settings->italicFont());
  64     font.setBold(settings->boldFont());
  65     m_viewOptions.font = font;
  66
  67     updateGridSize(controller->showPreview());
  68
  69     if (settings->arrangement() == QListView::TopToBottom) {
  70         setFlow(QListView::LeftToRight);
  71         m_viewOptions.decorationPosition = QStyleOptionViewItem::Top;
  72     } else {
  73         setFlow(QListView::TopToBottom);
  74         m_viewOptions.decorationPosition = QStyleOptionViewItem::Left;
  75     }
  76 }
  77
  78 DolphinIconsView::~DolphinIconsView()
  79 {}
  80
  81 QStyleOptionViewItem DolphinIconsView::viewOptions() const
  82 {
  83     return m_viewOptions;
  84 }
  85
  86 void DolphinIconsView::contextMenuEvent(QContextMenuEvent* event)
  87 {
  88     KListView::contextMenuEvent(event);
  89     m_controller->triggerContextMenuRequest(event->pos());
  90 }
  91
  92 void DolphinIconsView::mouseReleaseEvent(QMouseEvent* event)
  93 {
  94     KListView::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()) {
 109         m_controller->indicateDroppedUrls(urls,
 110                                           indexAt(event->pos()),
 111                                           event->source());
 112         event->acceptProposedAction();
 113     }
 114     KListView::dropEvent(event);
 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     m_viewOptions.decorationSize = QSize(size, size);
 137     setGridSize(QSize(gridWidth, gridHeight));
 138
 139     m_controller->setZoomInPossible(isZoomInPossible());
 140     m_controller->setZoomOutPossible(isZoomOutPossible());
 141 }
 142
 143 void DolphinIconsView::zoomIn()
 144 {
 145     if (isZoomInPossible()) {
 146         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 147
 148         const int oldIconSize = settings->iconSize();
 149         int newIconSize = oldIconSize;
 150
 151         const bool showPreview = m_controller->showPreview();
 152         if (showPreview) {
 153             const int previewSize = increasedIconSize(settings->previewSize());
 154             settings->setPreviewSize(previewSize);
 155         } else {
 156             newIconSize = increasedIconSize(oldIconSize);
 157             settings->setIconSize(newIconSize);
 158             if (settings->previewSize() < newIconSize) {
 159                 // assure that the preview size is always >= the icon size
 160                 settings->setPreviewSize(newIconSize);
 161             }
 162         }
 163
 164         // increase also the grid size
 165         const int diff = newIconSize - oldIconSize;
 166         settings->setGridWidth(settings->gridWidth() + diff);
 167         settings->setGridHeight(settings->gridHeight() + diff);
 168
 169         updateGridSize(showPreview);
 170     }
 171 }
 172
 173 void DolphinIconsView::zoomOut()
 174 {
 175     if (isZoomOutPossible()) {
 176         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 177
 178         const int oldIconSize = settings->iconSize();
 179         int newIconSize = oldIconSize;
 180
 181         const bool showPreview = m_controller->showPreview();
 182         if (showPreview) {
 183             const int previewSize = decreasedIconSize(settings->previewSize());
 184             settings->setPreviewSize(previewSize);
 185             if (settings->iconSize() > previewSize) {
 186                 // assure that the icon size is always <= the preview size
 187                 newIconSize = previewSize;
 188                 settings->setIconSize(newIconSize);
 189             }
 190         } else {
 191             newIconSize = decreasedIconSize(settings->iconSize());
 192             settings->setIconSize(newIconSize);
 193         }
 194
 195         // decrease also the grid size
 196         const int diff = oldIconSize - newIconSize;
 197         settings->setGridWidth(settings->gridWidth() - diff);
 198         settings->setGridHeight(settings->gridHeight() - diff);
 199
 200         updateGridSize(showPreview);
 201     }
 202 }
 203
 204 bool DolphinIconsView::isZoomInPossible() const
 205 {
 206     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 207     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 208     return size < K3Icon::SizeEnormous;
 209 }
 210
 211 bool DolphinIconsView::isZoomOutPossible() const
 212 {
 213     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 214     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 215     return size > K3Icon::SizeSmall;
 216 }
 217
 218 int DolphinIconsView::increasedIconSize(int size) const
 219 {
 220     // TODO: get rid of K3Icon sizes
 221     int incSize = 0;
 222     switch (size) {
 223     case K3Icon::SizeSmall:       incSize = K3Icon::SizeSmallMedium; break;
 224     case K3Icon::SizeSmallMedium: incSize = K3Icon::SizeMedium; break;
 225     case K3Icon::SizeMedium:      incSize = K3Icon::SizeLarge; break;
 226     case K3Icon::SizeLarge:       incSize = K3Icon::SizeHuge; break;
 227     case K3Icon::SizeHuge:        incSize = K3Icon::SizeEnormous; break;
 228     default: Q_ASSERT(false); break;
 229     }
 230     return incSize;
 231 }
 232
 233 int DolphinIconsView::decreasedIconSize(int size) const
 234 {
 235     // TODO: get rid of K3Icon sizes
 236     int decSize = 0;
 237     switch (size) {
 238     case K3Icon::SizeSmallMedium: decSize = K3Icon::SizeSmall; break;
 239     case K3Icon::SizeMedium: decSize = K3Icon::SizeSmallMedium; break;
 240     case K3Icon::SizeLarge: decSize = K3Icon::SizeMedium; break;
 241     case K3Icon::SizeHuge: decSize = K3Icon::SizeLarge; break;
 242     case K3Icon::SizeEnormous: decSize = K3Icon::SizeHuge; break;
 243     default: Q_ASSERT(false); break;
 244     }
 245     return decSize;
 246 }
 247
 248 #include "dolphiniconsview.moc"