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 <QtGui/QAbstractProxyModel>
  33 #include <QtCore/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(slotShowPreviewChanged(bool)));
  56     connect(controller, SIGNAL(showAdditionalInfoChanged(bool)),
  57             this, SLOT(slotShowAdditionalInfoChanged(bool)));
  58     connect(controller, SIGNAL(zoomIn()),
  59             this, SLOT(zoomIn()));
  60     connect(controller, SIGNAL(zoomOut()),
  61             this, SLOT(zoomOut()));
  62
  63     // apply the icons mode settings to the widget
  64     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
  65     Q_ASSERT(settings != 0);
  66
  67     m_viewOptions = KListView::viewOptions();
  68     m_viewOptions.showDecorationSelected = true;
  69
  70     QFont font(settings->fontFamily(), settings->fontSize());
  71     font.setItalic(settings->italicFont());
  72     font.setBold(settings->boldFont());
  73     m_viewOptions.font = font;
  74     if (settings->numberOfTextlines() > 1) {
  75         m_viewOptions.textElideMode = Qt::ElideNone;
  76         m_viewOptions.features = QStyleOptionViewItemV2::WrapText;
  77     }
  78
  79     updateGridSize(controller->showPreview(), controller->showAdditionalInfo());
  80
  81     if (settings->arrangement() == QListView::TopToBottom) {
  82         setFlow(QListView::LeftToRight);
  83         m_viewOptions.decorationPosition = QStyleOptionViewItem::Top;
  84     } else {
  85         setFlow(QListView::TopToBottom);
  86         m_viewOptions.decorationPosition = QStyleOptionViewItem::Left;
  87     }
  88 }
  89
  90 DolphinIconsView::~DolphinIconsView()
  91 {
  92 }
  93
  94 QStyleOptionViewItem DolphinIconsView::viewOptions() const
  95 {
  96     return m_viewOptions;
  97 }
  98
  99 void DolphinIconsView::contextMenuEvent(QContextMenuEvent* event)
 100 {
 101     KListView::contextMenuEvent(event);
 102     m_controller->triggerContextMenuRequest(event->pos());
 103 }
 104
 105 void DolphinIconsView::mouseReleaseEvent(QMouseEvent* event)
 106 {
 107     KListView::mouseReleaseEvent(event);
 108     m_controller->triggerActivation();
 109 }
 110
 111 void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)
 112 {
 113     if (event->mimeData()->hasUrls()) {
 114         event->acceptProposedAction();
 115     }
 116 }
 117
 118 void DolphinIconsView::dropEvent(QDropEvent* event)
 119 {
 120     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 121     if (!urls.isEmpty()) {
 122         m_controller->indicateDroppedUrls(urls,
 123                                           indexAt(event->pos()),
 124                                           event->source());
 125         event->acceptProposedAction();
 126     }
 127     KListView::dropEvent(event);
 128 }
 129
 130 void DolphinIconsView::slotShowPreviewChanged(bool showPreview)
 131 {
 132     updateGridSize(showPreview, m_controller->showAdditionalInfo());
 133 }
 134
 135 void DolphinIconsView::slotShowAdditionalInfoChanged(bool showAdditionalInfo)
 136 {
 137     updateGridSize(m_controller->showPreview(), showAdditionalInfo);
 138 }
 139
 140 void DolphinIconsView::zoomIn()
 141 {
 142     if (isZoomInPossible()) {
 143         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 144
 145         const int oldIconSize = settings->iconSize();
 146         int newIconSize = oldIconSize;
 147
 148         const bool showPreview = m_controller->showPreview();
 149         if (showPreview) {
 150             const int previewSize = increasedIconSize(settings->previewSize());
 151             settings->setPreviewSize(previewSize);
 152         } else {
 153             newIconSize = increasedIconSize(oldIconSize);
 154             settings->setIconSize(newIconSize);
 155             if (settings->previewSize() < newIconSize) {
 156                 // assure that the preview size is always >= the icon size
 157                 settings->setPreviewSize(newIconSize);
 158             }
 159         }
 160
 161         // increase also the grid size
 162         const int diff = newIconSize - oldIconSize;
 163         settings->setGridWidth(settings->gridWidth() + diff);
 164         settings->setGridHeight(settings->gridHeight() + diff);
 165
 166         updateGridSize(showPreview, m_controller->showAdditionalInfo());
 167     }
 168 }
 169
 170 void DolphinIconsView::zoomOut()
 171 {
 172     if (isZoomOutPossible()) {
 173         IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 174
 175         const int oldIconSize = settings->iconSize();
 176         int newIconSize = oldIconSize;
 177
 178         const bool showPreview = m_controller->showPreview();
 179         if (showPreview) {
 180             const int previewSize = decreasedIconSize(settings->previewSize());
 181             settings->setPreviewSize(previewSize);
 182             if (settings->iconSize() > previewSize) {
 183                 // assure that the icon size is always <= the preview size
 184                 newIconSize = previewSize;
 185                 settings->setIconSize(newIconSize);
 186             }
 187         } else {
 188             newIconSize = decreasedIconSize(settings->iconSize());
 189             settings->setIconSize(newIconSize);
 190         }
 191
 192         // decrease also the grid size
 193         const int diff = oldIconSize - newIconSize;
 194         settings->setGridWidth(settings->gridWidth() - diff);
 195         settings->setGridHeight(settings->gridHeight() - diff);
 196
 197         updateGridSize(showPreview, m_controller->showAdditionalInfo());
 198     }
 199 }
 200
 201 bool DolphinIconsView::isZoomInPossible() const
 202 {
 203     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 204     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 205     return size < K3Icon::SizeEnormous;
 206 }
 207
 208 bool DolphinIconsView::isZoomOutPossible() const
 209 {
 210     IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 211     const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
 212     return size > K3Icon::SizeSmall;
 213 }
 214
 215 int DolphinIconsView::increasedIconSize(int size) const
 216 {
 217     // TODO: get rid of K3Icon sizes
 218     int incSize = 0;
 219     switch (size) {
 220     case K3Icon::SizeSmall:       incSize = K3Icon::SizeSmallMedium; break;
 221     case K3Icon::SizeSmallMedium: incSize = K3Icon::SizeMedium; break;
 222     case K3Icon::SizeMedium:      incSize = K3Icon::SizeLarge; break;
 223     case K3Icon::SizeLarge:       incSize = K3Icon::SizeHuge; break;
 224     case K3Icon::SizeHuge:        incSize = K3Icon::SizeEnormous; break;
 225     default: Q_ASSERT(false); break;
 226     }
 227     return incSize;
 228 }
 229
 230 int DolphinIconsView::decreasedIconSize(int size) const
 231 {
 232     // TODO: get rid of K3Icon sizes
 233     int decSize = 0;
 234     switch (size) {
 235     case K3Icon::SizeSmallMedium: decSize = K3Icon::SizeSmall; break;
 236     case K3Icon::SizeMedium: decSize = K3Icon::SizeSmallMedium; break;
 237     case K3Icon::SizeLarge: decSize = K3Icon::SizeMedium; break;
 238     case K3Icon::SizeHuge: decSize = K3Icon::SizeLarge; break;
 239     case K3Icon::SizeEnormous: decSize = K3Icon::SizeHuge; break;
 240     default: Q_ASSERT(false); break;
 241     }
 242     return decSize;
 243 }
 244
 245 void DolphinIconsView::updateGridSize(bool showPreview, bool showAdditionalInfo)
 246 {
 247     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 248     Q_ASSERT(settings != 0);
 249
 250     int gridWidth = settings->gridWidth();
 251     int gridHeight = settings->gridHeight();
 252     int size = settings->iconSize();
 253
 254     if (showPreview) {
 255         const int previewSize = settings->previewSize();
 256         const int diff = previewSize - size;
 257         Q_ASSERT(diff >= 0);
 258         gridWidth  += diff;
 259         gridHeight += diff;
 260
 261         size = previewSize;
 262     }
 263
 264     if (showAdditionalInfo) {
 265         gridHeight += m_viewOptions.font.pointSize() * 2;
 266     }
 267
 268     m_viewOptions.decorationSize = QSize(size, size);
 269     setGridSize(QSize(gridWidth, gridHeight));
 270
 271     m_controller->setZoomInPossible(isZoomInPossible());
 272     m_controller->setZoomOutPossible(isZoomOutPossible());
 273 }
 274
 275 #include "dolphiniconsview.moc"