Merged very early alpha-version of Dolphin 2.0

Dolphin 2.0 will get a new view-engine with the
following improvements:
- Better performance
- Animated transitions
- No clipped filenames due to dynamic item-sizes
- Grouping support for all view-modes
- Non-rectangular selection areas
- Simplified code for better maintenance

More details will be provided in a blog-entry during
the next days.

Please note that the code is in a very
early alpha-stage and although the most tricky parts
have been implemented already very basic things like
drag and drop or selections have not been pushed yet.
Those things are rather trivial to implement but this
still will take some time.

1 files changed, 279 insertions, 0 deletions

diff --git a/src/views/dolphinitemlistcontainer.cpp b/src/views/dolphinitemlistcontainer.cpp
new file mode 100644
index 000000000..9c9ad6de3
--- /dev/null
+++ b/src/views/dolphinitemlistcontainer.cpp
@@ -0,0 +1,279 @@
+/***************************************************************************
+ *   Copyright (C) 2011 by Peter Penz <[email protected]>             *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
+ ***************************************************************************/
+
+#include "dolphinitemlistcontainer.h"
+
+#include "dolphin_iconsmodesettings.h"
+#include "dolphin_detailsmodesettings.h"
+#include "dolphin_compactmodesettings.h"
+
+#include <kitemviews/kitemliststyleoption.h>
+#include <kitemviews/kfileitemlistview.h>
+#include <kitemviews/kfileitemmodel.h>
+#include <kitemviews/kitemlistcontroller.h>
+#include <kitemviews/kitemliststyleoption.h>
+
+#include <KDirLister>
+#include <KGlobalSettings>
+
+#include <views/viewmodecontroller.h>
+
+#include "zoomlevelinfo.h"
+
+
+DolphinItemListContainer::DolphinItemListContainer(KDirLister* dirLister,
+                                                   QWidget* parent) :
+    KItemListContainer(parent),
+    m_zoomLevel(0),
+    m_fileItemListView(0)
+{
+    controller()->setModel(new KFileItemModel(dirLister, this));
+
+    m_fileItemListView = new KFileItemListView();
+    controller()->setView(m_fileItemListView);
+
+    KItemListStyleOption option;
+
+    // TODO:
+    option.font = parent->font();
+    option.fontMetrics = QFontMetrics(parent->font());
+
+    updateGridSize();
+/*
+    connect(this, SIGNAL(clicked(const QModelIndex&)),
+            dolphinViewController, SLOT(requestTab(const QModelIndex&)));*/
+/*
+    connect(this, SIGNAL(entered(const QModelIndex&)),
+            dolphinViewController, SLOT(emitItemEntered(const QModelIndex&)));
+    connect(this, SIGNAL(viewportEntered()),
+            dolphinViewController, SLOT(emitViewportEntered()));*/
+
+    // apply the icons mode settings to the widget
+    //const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
+    //Q_ASSERT(settings);
+
+    /*if (settings->useSystemFont()) {
+        m_font = KGlobalSettings::generalFont();
+    } else {
+        m_font = QFont(settings->fontFamily(),
+                       qRound(settings->fontSize()),
+                       settings->fontWeight(),
+                       settings->italicFont());
+        m_font.setPointSizeF(settings->fontSize());
+    }
+
+    setWordWrap(settings->numberOfTextlines() > 1);
+
+    if (settings->arrangement() == QListView::TopToBottom) {
+        setFlow(QListView::LeftToRight);
+        m_decorationPosition = QStyleOptionViewItem::Top;
+        m_displayAlignment = Qt::AlignHCenter;
+    } else {
+        setFlow(QListView::TopToBottom);
+        m_decorationPosition = QStyleOptionViewItem::Left;
+        m_displayAlignment = Qt::AlignLeft | Qt::AlignVCenter;
+    }
+
+    connect(m_categoryDrawer, SIGNAL(actionRequested(int,QModelIndex)), this, SLOT(categoryDrawerActionRequested(int,QModelIndex)));
+    setCategoryDrawer(m_categoryDrawer);
+
+    connect(KGlobalSettings::self(), SIGNAL(settingsChanged(int)),
+            this, SLOT(slotGlobalSettingsChanged(int)));*/
+
+    //updateGridSize(dolphinView->showPreview(), 0);
+    /*m_extensionsFactory = new ViewExtensionsFactory(this, dolphinViewController, viewModeController);*/
+}
+
+DolphinItemListContainer::~DolphinItemListContainer()
+{
+    IconsModeSettings::self()->writeConfig();
+    CompactModeSettings::self()->writeConfig();
+    DetailsModeSettings::self()->writeConfig();
+
+    KItemListView* view = controller()->view();
+    controller()->setView(0);
+    delete view;
+}
+
+void DolphinItemListContainer::setPreviewsShown(bool show)
+{
+    beginTransaction();
+    m_fileItemListView->setPreviewsShown(show);
+    updateGridSize();
+    endTransaction();
+}
+
+bool DolphinItemListContainer::previewsShown() const
+{
+    return m_fileItemListView->previewsShown();
+}
+
+void DolphinItemListContainer::setVisibleRoles(const QHash<QByteArray, int>& roles)
+{
+    m_fileItemListView->setVisibleRoles(roles);
+    updateGridSize();
+}
+
+QHash<QByteArray, int> DolphinItemListContainer::visibleRoles() const
+{
+    return m_fileItemListView->visibleRoles();
+}
+
+void DolphinItemListContainer::setZoomLevel(int level)
+{
+    if (level < ZoomLevelInfo::minimumLevel()) {
+        level = ZoomLevelInfo::minimumLevel();
+    } else if (level > ZoomLevelInfo::maximumLevel()) {
+        level = ZoomLevelInfo::maximumLevel();
+    }
+
+    if (level == m_zoomLevel) {
+        return;
+    }
+
+    m_zoomLevel = level;
+
+    if (previewsShown()) {
+        const int previewSize = ZoomLevelInfo::iconSizeForZoomLevel(level);
+
+        switch (itemLayout()) {
+        case KFileItemListView::IconsLayout:   IconsModeSettings::setPreviewSize(previewSize); break;
+        case KFileItemListView::CompactLayout: CompactModeSettings::setPreviewSize(previewSize); break;
+        case KFileItemListView::DetailsLayout: DetailsModeSettings::setPreviewSize(previewSize); break;
+        default: Q_ASSERT(false); break;
+        }
+    } else {
+        const int iconSize = ZoomLevelInfo::iconSizeForZoomLevel(level);
+        switch (itemLayout()) {
+        case KFileItemListView::IconsLayout:   IconsModeSettings::setIconSize(iconSize); break;
+        case KFileItemListView::CompactLayout: CompactModeSettings::setIconSize(iconSize); break;
+        case KFileItemListView::DetailsLayout: DetailsModeSettings::setIconSize(iconSize); break;
+        default: Q_ASSERT(false); break;
+        }
+    }
+
+    updateGridSize();
+}
+
+int DolphinItemListContainer::zoomLevel() const
+{
+    return m_zoomLevel;
+}
+
+void DolphinItemListContainer::setItemLayout(KFileItemListView::Layout layout)
+{
+    if (layout == itemLayout()) {
+        return;
+    }
+
+    beginTransaction();
+    m_fileItemListView->setItemLayout(layout);
+
+    switch (layout) {
+    case KFileItemListView::IconsLayout:
+    case KFileItemListView::DetailsLayout:
+        m_fileItemListView->setScrollOrientation(Qt::Vertical);
+        break;
+    case KFileItemListView::CompactLayout:
+        m_fileItemListView->setScrollOrientation(Qt::Horizontal);
+        break;
+    default:
+        Q_ASSERT(false);
+        break;
+    }
+
+    updateGridSize();
+    endTransaction();
+}
+
+KFileItemListView::Layout DolphinItemListContainer::itemLayout() const
+{
+    return m_fileItemListView->itemLayout();
+}
+
+void DolphinItemListContainer::beginTransaction()
+{
+    m_fileItemListView->beginTransaction();
+}
+
+void DolphinItemListContainer::endTransaction()
+{
+    m_fileItemListView->endTransaction();
+}
+
+void DolphinItemListContainer::updateGridSize()
+{
+    // Calculate the size of the icon
+    int iconSize;
+    if (previewsShown()) {
+        switch (itemLayout()) {
+        case KFileItemListView::IconsLayout:   iconSize = IconsModeSettings::previewSize(); break;
+        case KFileItemListView::CompactLayout: iconSize = CompactModeSettings::previewSize(); break;
+        case KFileItemListView::DetailsLayout: iconSize = DetailsModeSettings::previewSize(); break;
+        default: Q_ASSERT(false); break;
+        }
+    } else {
+        switch (itemLayout()) {
+        case KFileItemListView::IconsLayout:   iconSize = IconsModeSettings::iconSize(); break;
+        case KFileItemListView::CompactLayout: iconSize = CompactModeSettings::iconSize(); break;
+        case KFileItemListView::DetailsLayout: iconSize = DetailsModeSettings::iconSize(); break;
+        default: Q_ASSERT(false); break;
+        }
+    }
+
+    m_zoomLevel = ZoomLevelInfo::zoomLevelForIconSize(QSize(iconSize, iconSize));
+    KItemListStyleOption styleOption = m_fileItemListView->styleOption();
+
+    const int innerMargin = (iconSize >= KIconLoader::SizeSmallMedium) ? 4 : 2;
+
+    // Calculate the item-width and item-height
+    int itemWidth;
+    int itemHeight;
+    switch (itemLayout()) {
+    case KFileItemListView::IconsLayout: {
+        const int minItemWidth = 64;
+        itemWidth = minItemWidth + IconsModeSettings::textWidthIndex() * 64; // TODO:
+        if (itemWidth < iconSize + innerMargin * 2) {
+            itemWidth = iconSize + innerMargin * 2;
+        }
+        itemHeight = innerMargin * 2 + iconSize + styleOption.fontMetrics.height();
+        break;
+    }
+    case KFileItemListView::CompactLayout: {
+        itemWidth = innerMargin * 2;
+        const int textLinesCount = m_fileItemListView->visibleRoles().count();
+        itemHeight = innerMargin * 2 + qMax(iconSize, textLinesCount * styleOption.fontMetrics.height());
+        break;
+    }
+    case KFileItemListView::DetailsLayout: {
+        itemWidth = -1;
+        itemHeight = innerMargin * 2 + qMax(iconSize, styleOption.fontMetrics.height());
+        break;
+    }
+    default: Q_ASSERT(false); break;
+    }
+
+    // Apply the calculated values
+    styleOption.margin = innerMargin;
+    styleOption.iconSize = iconSize;
+    m_fileItemListView->setStyleOption(styleOption);
+    m_fileItemListView->setItemSize(QSizeF(itemWidth, itemHeight));
+}
+
+#include "dolphinitemlistcontainer.moc"