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     if (KGlobalSettings::singleClick()) {
  46         connect(this, SIGNAL(clicked(const QModelIndex&)),
  47                 controller, SLOT(triggerItem(const QModelIndex&)));
  48     } else {
  49         connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
  50                 controller, SLOT(triggerItem(const QModelIndex&)));
  51     }
  52     connect(this, SIGNAL(activated(const QModelIndex&)),
  53             controller, SLOT(triggerItem(const QModelIndex&)));
  54     connect(controller, SIGNAL(showPreviewChanged(bool)),
  55             this, SLOT(updateGridSize(bool)));
  56     connect(controller, SIGNAL(zoomIn()),
  57             this, SLOT(zoomIn()));
  58     connect(controller, SIGNAL(zoomOut()),
  59             this, SLOT(zoomOut()));
  60
  61     // apply the icons mode settings to the widget
  62     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
  63     Q_ASSERT(settings != 0);
  64
  65     m_viewOptions = KListView::viewOptions();
  66     m_viewOptions.showDecorationSelected = true;
  67
  68     QFont font(settings->fontFamily(), settings->fontSize());
  69     font.setItalic(settings->italicFont());
  70     font.setBold(settings->boldFont());
  71     m_viewOptions.font = font;
  72
  73     updateGridSize(controller->showPreview());
  74
  75     if (settings->arrangement() == QListView::TopToBottom) {
  76         setFlow(QListView::LeftToRight);
  77         m_viewOptions.decorationPosition = QStyleOptionViewItem::Top;
  78     } else {
  79         setFlow(QListView::TopToBottom);
  80         m_viewOptions.decorationPosition = QStyleOptionViewItem::Left;
  81     }
  82 }
  83
  84 DolphinIconsView::~DolphinIconsView()
  85 {
  86 }
  87
  88 QStyleOptionViewItem DolphinIconsView::viewOptions() const
  89 {
  90     return m_viewOptions;
  91 }
  92
  93 void DolphinIconsView::contextMenuEvent(QContextMenuEvent* event)
  94 {
  95     KListView::contextMenuEvent(event);
  96     m_controller->triggerContextMenuRequest(event->pos());
  97 }
  98
  99 void DolphinIconsView::mouseReleaseEvent(QMouseEvent* event)
 100 {
 101     KListView::mouseReleaseEvent(event);
 102     m_controller->triggerActivation();
 103 }
 104
 105 void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)
 106 {
 107     if (event->mimeData()->hasUrls()) {
 108         event->acceptProposedAction();
 109     }
 110 }
 111
 112 void DolphinIconsView::dropEvent(QDropEvent* event)
 113 {
 114     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 115     if (!urls.isEmpty()) {
 116         m_controller->indicateDroppedUrls(urls,
 117                                           indexAt(event->pos()),
 118                                           event->source());
 119         event->acceptProposedAction();
 120     }
 121     KListView::dropEvent(event);
 122 }
 123
 124 void DolphinIconsView::updateGridSize(bool showPreview)
 125 {
 126     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 127     Q_ASSERT(settings != 0);
 128
 129     int gridWidth = settings->gridWidth();
 130     int gridHeight = settings->gridHeight();
 131     int size = settings->iconSize();
 132
 133     if (showPreview) {
 134         const int previewSize = settings->previewSize();
 135         const int diff = previewSize - size;
 136         Q_ASSERT(diff >= 0);
 137         gridWidth  += diff;
 138         gridHeight += diff;
 139
 140         size = previewSize;
 141     }
 142
 143     m_viewOptions.decorationSize = QSize(size, size);
 144     setGridSize(QSize(gridWidth, gridHeight));
 145
 146     m_controller->setZoomInPossible(isZoomInPossible());
 147     m_controller->setZoomOutPossible(isZoomOutPossible());
 148 }
 149
 150 void DolphinIconsView::zoomIn()
 151 {
 152     if (isZoomInPossible()) {
 153         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 154
 155         const int oldIconSize = settings->iconSize();
 156         int newIconSize = oldIconSize;
 157
 158         const bool showPreview = m_controller->showPreview();
 159         if (showPreview) {
 160             const int previewSize = increasedIconSize(settings->previewSize());
 161             settings->setPreviewSize(previewSize);
 162         } else {
 163             newIconSize = increasedIconSize(oldIconSize);
 164             settings->setIconSize(newIconSize);
 165             if (settings->previewSize() < newIconSize) {
 166                 // assure that the preview size is always >= the icon size
 167                 settings->setPreviewSize(newIconSize);
 168             }
 169         }
 170
 171         // increase also the grid size
 172         const int diff = newIconSize - oldIconSize;
 173         settings->setGridWidth(settings->gridWidth() + diff);
 174         settings->setGridHeight(settings->gridHeight() + diff);
 175
 176         updateGridSize(showPreview);
 177     }
 178 }
 179
 180 void DolphinIconsView::zoomOut()
 181 {
 182     if (isZoomOutPossible()) {
 183         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 184
 185         const int oldIconSize = settings->iconSize();
 186         int newIconSize = oldIconSize;
 187
 188         const bool showPreview = m_controller->showPreview();
 189         if (showPreview) {
 190             const int previewSize = decreasedIconSize(settings->previewSize());
 191             settings->setPreviewSize(previewSize);
 192             if (settings->iconSize() > previewSize) {
 193                 // assure that the icon size is always <= the preview size
 194                 newIconSize = previewSize;
 195                 settings->setIconSize(newIconSize);
 196             }
 197         } else {
 198             newIconSize = decreasedIconSize(settings->iconSize());
 199             settings->setIconSize(newIconSize);
 200         }
 201
 202         // decrease also the grid size
 203         const int diff = oldIconSize - newIconSize;
 204         settings->setGridWidth(settings->gridWidth() - diff);
 205         settings->setGridHeight(settings->gridHeight() - diff);
 206
 207         updateGridSize(showPreview);
 208     }
 209 }
 210
 211 bool DolphinIconsView::isZoomInPossible() const
 212 {
 213     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 214     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 215     return size < K3Icon::SizeEnormous;
 216 }
 217
 218 bool DolphinIconsView::isZoomOutPossible() const
 219 {
 220     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 221     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 222     return size > K3Icon::SizeSmall;
 223 }
 224
 225 int DolphinIconsView::increasedIconSize(int size) const
 226 {
 227     // TODO: get rid of K3Icon sizes
 228     int incSize = 0;
 229     switch (size) {
 230     case K3Icon::SizeSmall:       incSize = K3Icon::SizeSmallMedium; break;
 231     case K3Icon::SizeSmallMedium: incSize = K3Icon::SizeMedium; break;
 232     case K3Icon::SizeMedium:      incSize = K3Icon::SizeLarge; break;
 233     case K3Icon::SizeLarge:       incSize = K3Icon::SizeHuge; break;
 234     case K3Icon::SizeHuge:        incSize = K3Icon::SizeEnormous; break;
 235     default: Q_ASSERT(false); break;
 236     }
 237     return incSize;
 238 }
 239
 240 int DolphinIconsView::decreasedIconSize(int size) const
 241 {
 242     // TODO: get rid of K3Icon sizes
 243     int decSize = 0;
 244     switch (size) {
 245     case K3Icon::SizeSmallMedium: decSize = K3Icon::SizeSmall; break;
 246     case K3Icon::SizeMedium: decSize = K3Icon::SizeSmallMedium; break;
 247     case K3Icon::SizeLarge: decSize = K3Icon::SizeMedium; break;
 248     case K3Icon::SizeHuge: decSize = K3Icon::SizeLarge; break;
 249     case K3Icon::SizeEnormous: decSize = K3Icon::SizeHuge; break;
 250     default: Q_ASSERT(false); break;
 251     }
 252     return decSize;
 253 }
 254
 255 #include "dolphiniconsview.moc"