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, 281 insertions, 0 deletions

diff --git a/src/kitemviews/kitemlistcontroller.cpp b/src/kitemviews/kitemlistcontroller.cpp
new file mode 100644
index 000000000..b709e5606
--- /dev/null
+++ b/src/kitemviews/kitemlistcontroller.cpp
@@ -0,0 +1,281 @@
+/***************************************************************************
+ *   Copyright (C) 2011 by Peter Penz <[email protected]>             *
+ *                                                                         *
+ *   Based on the Itemviews NG project from Trolltech Labs:                *
+ *   http://qt.gitorious.org/qt-labs/itemviews-ng                          *
+ *                                                                         *
+ *   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 "kitemlistcontroller.h"
+
+#include "kitemlistview.h"
+#include "kitemlistselectionmanager.h"
+
+#include <QEvent>
+#include <QGraphicsSceneEvent>
+#include <QTransform>
+
+#include <KDebug>
+
+KItemListController::KItemListController(QObject* parent) :
+    QObject(parent),
+    m_selectionBehavior(NoSelection),
+    m_model(0),
+    m_view(0),
+    m_selectionManager(new KItemListSelectionManager(this))
+{
+}
+
+KItemListController::~KItemListController()
+{
+}
+
+void KItemListController::setModel(KItemModelBase* model)
+{
+    if (m_model == model) {
+        return;
+    }
+
+    KItemModelBase* oldModel = m_model;
+    m_model = model;
+
+    if (m_view) {
+        m_view->setModel(m_model);
+    }
+
+    emit modelChanged(m_model, oldModel);
+}
+
+KItemModelBase* KItemListController::model() const
+{
+    return m_model;
+}
+
+KItemListSelectionManager* KItemListController::selectionManager() const
+{
+    return m_selectionManager;
+}
+
+void KItemListController::setView(KItemListView* view)
+{
+    if (m_view == view) {
+        return;
+    }
+
+    KItemListView* oldView = m_view;
+    m_view = view;
+
+    if (m_view) {
+        m_view->setController(this);
+        m_view->setModel(m_model);
+    }
+
+    emit viewChanged(m_view, oldView);
+}
+
+KItemListView* KItemListController::view() const
+{
+    return m_view;
+}
+
+void KItemListController::setSelectionBehavior(SelectionBehavior behavior)
+{
+    m_selectionBehavior = behavior;
+}
+
+KItemListController::SelectionBehavior KItemListController::selectionBehavior() const
+{
+    return m_selectionBehavior;
+}
+
+bool KItemListController::showEvent(QShowEvent* event)
+{
+    Q_UNUSED(event);
+    return false;
+}
+
+bool KItemListController::hideEvent(QHideEvent* event)
+{
+    Q_UNUSED(event);
+    return false;
+}
+
+bool KItemListController::keyPressEvent(QKeyEvent* event)
+{
+    Q_UNUSED(event);
+    return false;
+}
+
+bool KItemListController::inputMethodEvent(QInputMethodEvent* event)
+{
+    Q_UNUSED(event);
+    return false;
+}
+
+bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
+{
+    Q_UNUSED(event);
+    Q_UNUSED(transform);
+    return false;
+}
+
+bool KItemListController::mouseMoveEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
+{
+    Q_UNUSED(event);
+    Q_UNUSED(transform);
+    return false;
+}
+
+bool KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
+{
+    if (m_view) {
+        const QPointF pos = transform.map(event->pos());
+        const int index = m_view->itemAt(pos);
+        if (index >= 0) {
+            bool emitItemClicked = true;
+            if (event->button() & Qt::LeftButton) {
+                if (m_view->isAboveExpansionToggle(index, pos)) {
+                    emit itemExpansionToggleClicked(index);
+                    emitItemClicked = false;
+                }
+            }
+
+            if (emitItemClicked) {
+                emit itemClicked(index, event->button());
+            }
+        }
+    }
+
+    return false;
+}
+
+bool KItemListController::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event, const QTransform& transform)
+{
+    Q_UNUSED(event);
+    Q_UNUSED(transform);
+    return false;
+}
+
+bool KItemListController::dragEnterEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
+{
+    Q_UNUSED(event);
+    Q_UNUSED(transform);
+    return false;
+}
+
+bool KItemListController::dragLeaveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
+{
+    Q_UNUSED(event);
+    Q_UNUSED(transform);
+    return false;
+}
+
+bool KItemListController::dragMoveEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
+{
+    Q_UNUSED(event);
+    Q_UNUSED(transform);
+    return false;
+}
+
+bool KItemListController::dropEvent(QGraphicsSceneDragDropEvent* event, const QTransform& transform)
+{
+    Q_UNUSED(event);
+    Q_UNUSED(transform);
+    return false;
+}
+
+bool KItemListController::hoverEnterEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
+{
+    Q_UNUSED(event);
+    Q_UNUSED(transform);
+    return false;
+}
+
+bool KItemListController::hoverMoveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
+{
+    Q_UNUSED(event);
+    Q_UNUSED(transform);
+    return false;
+}
+
+bool KItemListController::hoverLeaveEvent(QGraphicsSceneHoverEvent* event, const QTransform& transform)
+{
+    Q_UNUSED(event);
+    Q_UNUSED(transform);
+    return false;
+}
+
+bool KItemListController::wheelEvent(QGraphicsSceneWheelEvent* event, const QTransform& transform)
+{
+    Q_UNUSED(event);
+    Q_UNUSED(transform);
+    return false;
+}
+
+bool KItemListController::resizeEvent(QGraphicsSceneResizeEvent* event, const QTransform& transform)
+{
+    Q_UNUSED(event);
+    Q_UNUSED(transform);
+    return false;
+}
+
+bool KItemListController::processEvent(QEvent* event, const QTransform& transform)
+{
+    if (!event) {
+        return false;
+    }
+
+    switch (event->type()) {
+//  case QEvent::FocusIn:
+//  case QEvent::FocusOut:
+//      return focusEvent(static_cast<QFocusEvent*>(event));
+    case QEvent::KeyPress:
+        return keyPressEvent(static_cast<QKeyEvent*>(event));
+    case QEvent::InputMethod:
+        return inputMethodEvent(static_cast<QInputMethodEvent*>(event));
+    case QEvent::GraphicsSceneMousePress:
+        return mousePressEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
+    case QEvent::GraphicsSceneMouseMove:
+        return mouseMoveEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
+    case QEvent::GraphicsSceneMouseRelease:
+        return mouseReleaseEvent(static_cast<QGraphicsSceneMouseEvent*>(event), QTransform());
+    case QEvent::GraphicsSceneWheel:
+         return wheelEvent(static_cast<QGraphicsSceneWheelEvent*>(event), QTransform());
+    case QEvent::GraphicsSceneDragEnter:
+        return dragEnterEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
+    case QEvent::GraphicsSceneDragLeave:
+        return dragLeaveEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
+    case QEvent::GraphicsSceneDragMove:
+        return dragMoveEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
+    case QEvent::GraphicsSceneDrop:
+        return dropEvent(static_cast<QGraphicsSceneDragDropEvent*>(event), QTransform());
+    case QEvent::GraphicsSceneHoverEnter:
+        return hoverEnterEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
+    case QEvent::GraphicsSceneHoverMove:
+        return hoverMoveEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
+    case QEvent::GraphicsSceneHoverLeave:
+        return hoverLeaveEvent(static_cast<QGraphicsSceneHoverEvent*>(event), QTransform());
+    case QEvent::GraphicsSceneResize:
+        return resizeEvent(static_cast<QGraphicsSceneResizeEvent*>(event), transform);
+    default:
+        break;
+    }
+
+    return false;
+}
+
+#include "kitemlistcontroller.moc"