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