Sourcecode hierarchy cleanup: Create folder "views" and move view related sources to it

svn path=/trunk/KDE/kdebase/apps/; revision=1154146

1 files changed, 416 insertions, 0 deletions

diff --git a/src/views/dolphincolumnviewcontainer.cpp b/src/views/dolphincolumnviewcontainer.cpp
new file mode 100644
index 000000000..344d38d8a
--- /dev/null
+++ b/src/views/dolphincolumnviewcontainer.cpp
@@ -0,0 +1,416 @@
+/***************************************************************************
+ *   Copyright (C) 2007-2009 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 "dolphincolumnviewcontainer.h"
+
+#include "dolphin_columnmodesettings.h"
+
+#include "dolphincolumnview.h"
+#include "dolphinviewcontroller.h"
+#include "dolphinsortfilterproxymodel.h"
+#include "draganddrophelper.h"
+#include "settings/dolphinsettings.h"
+#include "viewmodecontroller.h"
+
+#include <QPoint>
+#include <QScrollBar>
+#include <QTimeLine>
+#include <QTimer>
+
+DolphinColumnViewContainer::DolphinColumnViewContainer(QWidget* parent,
+                                                       DolphinViewController* dolphinViewController,
+                                                       const ViewModeController* viewModeController) :
+    QScrollArea(parent),
+    m_dolphinViewController(dolphinViewController),
+    m_viewModeController(viewModeController),
+    m_active(false),
+    m_index(-1),
+    m_contentX(0),
+    m_columns(),
+    m_emptyViewport(0),
+    m_animation(0),
+    m_dragSource(0),
+    m_activeUrlTimer(0)
+{
+    Q_ASSERT(dolphinViewController != 0);
+    Q_ASSERT(viewModeController != 0);
+
+    setAcceptDrops(true);
+    setFocusPolicy(Qt::NoFocus);
+    setFrameShape(QFrame::NoFrame);
+    setLayoutDirection(Qt::LeftToRight);
+
+    connect(viewModeController, SIGNAL(activationChanged(bool)),
+            this, SLOT(updateColumnsBackground(bool)));
+
+    connect(horizontalScrollBar(), SIGNAL(valueChanged(int)),
+            this, SLOT(moveContentHorizontally(int)));
+
+    m_animation = new QTimeLine(500, this);
+    connect(m_animation, SIGNAL(frameChanged(int)), horizontalScrollBar(), SLOT(setValue(int)));
+
+    m_activeUrlTimer = new QTimer(this);
+    m_activeUrlTimer->setSingleShot(true);
+    m_activeUrlTimer->setInterval(200);
+    connect(m_activeUrlTimer, SIGNAL(timeout()),
+            this, SLOT(updateActiveUrl()));
+
+    DolphinColumnView* column = new DolphinColumnView(viewport(), this, viewModeController->url());
+    m_columns.append(column);
+    requestActivation(column);
+
+    m_emptyViewport = new QFrame(viewport());
+    m_emptyViewport->setFrameStyle(QFrame::StyledPanel | QFrame::Sunken);
+
+    updateColumnsBackground(true);
+
+}
+
+DolphinColumnViewContainer::~DolphinColumnViewContainer()
+{
+    delete m_dragSource;
+    m_dragSource = 0;
+}
+
+KUrl DolphinColumnViewContainer::rootUrl() const
+{
+    return m_columns[0]->url();
+}
+
+QAbstractItemView* DolphinColumnViewContainer::activeColumn() const
+{
+    return m_columns[m_index];
+}
+
+void DolphinColumnViewContainer::showColumn(const KUrl& url)
+{
+    if (!rootUrl().isParentOf(url)) {
+        removeAllColumns();
+        m_columns[0]->setUrl(url);
+        return;
+    }
+
+    int columnIndex = 0;
+    foreach (DolphinColumnView* column, m_columns) {
+        if (column->url() == url) {
+            // the column represents already the requested URL, hence activate it
+            requestActivation(column);
+            layoutColumns();
+            return;
+        } else if (!column->url().isParentOf(url)) {
+            // the column is no parent of the requested URL, hence
+            // just delete all remaining columns
+            if (columnIndex > 0) {
+                QList<DolphinColumnView*>::iterator start = m_columns.begin() + columnIndex;
+                QList<DolphinColumnView*>::iterator end = m_columns.end();
+                for (QList<DolphinColumnView*>::iterator it = start; it != end; ++it) {
+                    deleteColumn(*it);
+                }
+                m_columns.erase(start, end);
+
+                const int maxIndex = m_columns.count() - 1;
+                Q_ASSERT(maxIndex >= 0);
+                if (m_index > maxIndex) {
+                    m_index = maxIndex;
+                }
+                break;
+            }
+        }
+        ++columnIndex;
+    }
+
+    // Create missing columns. Assuming that the path is "/home/peter/Temp/" and
+    // the target path is "/home/peter/Temp/a/b/c/", then the columns "a", "b" and
+    // "c" will be created.
+    const int lastIndex = m_columns.count() - 1;
+    Q_ASSERT(lastIndex >= 0);
+
+    const KUrl& activeUrl = m_columns[lastIndex]->url();
+    Q_ASSERT(activeUrl.isParentOf(url));
+    Q_ASSERT(activeUrl != url);
+
+    QString path = activeUrl.url(KUrl::AddTrailingSlash);
+    const QString targetPath = url.url(KUrl::AddTrailingSlash);
+
+    columnIndex = lastIndex;
+    int slashIndex = path.count('/');
+    bool hasSubPath = (slashIndex >= 0);
+    while (hasSubPath) {
+        const QString subPath = targetPath.section('/', slashIndex, slashIndex);
+        if (subPath.isEmpty()) {
+            hasSubPath = false;
+        } else {
+            path += subPath + '/';
+            ++slashIndex;
+
+            const KUrl childUrl = KUrl(path);
+            m_columns[columnIndex]->setChildUrl(childUrl);
+            columnIndex++;
+
+            DolphinColumnView* column = new DolphinColumnView(viewport(), this, childUrl);
+            m_columns.append(column);
+
+            // Before invoking layoutColumns() the column must be set visible temporary.
+            // To prevent a flickering the initial geometry is set to a hidden position.
+            column->setGeometry(QRect(-1, -1, 1, 1));
+            column->show();
+            layoutColumns();
+            updateScrollBar();
+        }
+    }
+
+    requestActivation(m_columns[columnIndex]);
+}
+
+void DolphinColumnViewContainer::mousePressEvent(QMouseEvent* event)
+{
+    m_dolphinViewController->requestActivation();
+    QScrollArea::mousePressEvent(event);
+}
+
+void DolphinColumnViewContainer::keyPressEvent(QKeyEvent* event)
+{
+    if (event->key() == Qt::Key_Left) {
+        if (m_index > 0) {
+            requestActivation(m_columns[m_index - 1]);
+        }
+    } else {
+        QScrollArea::keyPressEvent(event);
+    }
+}
+
+void DolphinColumnViewContainer::resizeEvent(QResizeEvent* event)
+{
+    QScrollArea::resizeEvent(event);
+    layoutColumns();
+    updateScrollBar();
+    assureVisibleActiveColumn();
+}
+
+void DolphinColumnViewContainer::wheelEvent(QWheelEvent* event)
+{
+    // let Ctrl+wheel events propagate to the DolphinView for icon zooming
+    if ((event->modifiers() & Qt::ControlModifier) == Qt::ControlModifier) {
+        event->ignore();
+    } else {
+        QScrollArea::wheelEvent(event);
+    }
+}
+
+void DolphinColumnViewContainer::moveContentHorizontally(int x)
+{
+    m_contentX = isRightToLeft() ? +x : -x;
+    layoutColumns();
+}
+
+void DolphinColumnViewContainer::updateColumnsBackground(bool active)
+{
+    if (active == m_active) {
+        return;
+    }
+
+    m_active = active;
+
+    // dim the background of the viewport
+    const QPalette::ColorRole role = viewport()->backgroundRole();
+    QColor background = viewport()->palette().color(role);
+    background.setAlpha(0);  // make background transparent
+
+    QPalette palette = viewport()->palette();
+    palette.setColor(role, background);
+    viewport()->setPalette(palette);
+
+    foreach (DolphinColumnView* column, m_columns) {
+        column->updateBackground();
+    }
+}
+
+void DolphinColumnViewContainer::updateActiveUrl()
+{
+    const KUrl activeUrl = m_columns[m_index]->url();
+    m_dolphinViewController->requestUrlChange(activeUrl);
+}
+
+void DolphinColumnViewContainer::layoutColumns()
+{
+    const int gap = 4;
+
+    ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
+    const int columnWidth = settings->columnWidth();
+
+    QRect emptyViewportRect;
+    if (isRightToLeft()) {
+        int x = viewport()->width() - columnWidth + m_contentX;
+        foreach (DolphinColumnView* column, m_columns) {
+            column->setGeometry(QRect(x, 0, columnWidth - gap, viewport()->height()));
+            x -= columnWidth;
+        }
+        emptyViewportRect = QRect(0, 0, x + columnWidth - gap, viewport()->height());
+    } else {
+        int x = m_contentX;
+        foreach (DolphinColumnView* column, m_columns) {
+            column->setGeometry(QRect(x, 0, columnWidth - gap, viewport()->height()));
+            x += columnWidth;
+        }
+        emptyViewportRect = QRect(x, 0, viewport()->width() - x - gap, viewport()->height());
+    }
+
+    if (emptyViewportRect.isValid()) {
+        m_emptyViewport->show();
+        m_emptyViewport->setGeometry(emptyViewportRect);
+    } else {
+        m_emptyViewport->hide();
+    }
+}
+
+void DolphinColumnViewContainer::updateScrollBar()
+{
+    ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
+    const int contentWidth = m_columns.count() * settings->columnWidth();
+
+    horizontalScrollBar()->setPageStep(contentWidth);
+    horizontalScrollBar()->setRange(0, contentWidth - viewport()->width());
+}
+
+void DolphinColumnViewContainer::assureVisibleActiveColumn()
+{
+    const int viewportWidth = viewport()->width();
+    const int x = activeColumn()->x();
+
+    ColumnModeSettings* settings = DolphinSettings::instance().columnModeSettings();
+    const int width = settings->columnWidth();
+
+    if (x + width > viewportWidth) {
+        const int newContentX = m_contentX - x - width + viewportWidth;
+        if (isRightToLeft()) {
+            m_animation->setFrameRange(m_contentX, newContentX);
+        } else {
+            m_animation->setFrameRange(-m_contentX, -newContentX);
+        }
+        if (m_animation->state() != QTimeLine::Running) {
+           m_animation->start();
+        }
+    } else if (x < 0) {
+        const int newContentX = m_contentX - x;
+        if (isRightToLeft()) {
+            m_animation->setFrameRange(m_contentX, newContentX);
+        } else {
+            m_animation->setFrameRange(-m_contentX, -newContentX);
+        }
+        if (m_animation->state() != QTimeLine::Running) {
+           m_animation->start();
+        }
+    }
+}
+
+void DolphinColumnViewContainer::requestActivation(DolphinColumnView* column)
+{
+    if (m_dolphinViewController->itemView() != column) {
+        m_dolphinViewController->setItemView(column);
+    }
+    if (focusProxy() != column) {
+        setFocusProxy(column);
+    }
+    
+    if (column->isActive()) {
+        assureVisibleActiveColumn();
+    } else {
+        // Deactivate the currently active column
+        if (m_index >= 0) {
+            m_columns[m_index]->setActive(false);
+        }
+        
+        // Get the index of the column that should get activated
+        int index = 0;
+        foreach (DolphinColumnView* currColumn, m_columns) {
+            if (currColumn == column) {
+                break;
+            }
+            ++index;
+        }
+
+        Q_ASSERT(index != m_index);
+        Q_ASSERT(index < m_columns.count());
+
+        // Activate the requested column
+        m_index = index;
+        m_columns[m_index]->setActive(true);
+
+        assureVisibleActiveColumn();
+        m_activeUrlTimer->start(); // calls slot updateActiveUrl()
+    }
+}
+
+void DolphinColumnViewContainer::removeAllColumns()
+{
+    QList<DolphinColumnView*>::iterator start = m_columns.begin() + 1;
+    QList<DolphinColumnView*>::iterator end = m_columns.end();
+    for (QList<DolphinColumnView*>::iterator it = start; it != end; ++it) {
+        deleteColumn(*it);
+    }
+    m_columns.erase(start, end);
+    m_index = 0;
+    m_columns[0]->setActive(true);
+    assureVisibleActiveColumn();
+}
+
+QPoint DolphinColumnViewContainer::columnPosition(DolphinColumnView* column, const QPoint& point) const
+{
+    const QPoint topLeft = column->frameGeometry().topLeft();
+    return QPoint(point.x() - topLeft.x(), point.y() - topLeft.y());
+}
+
+void DolphinColumnViewContainer::deleteColumn(DolphinColumnView* column)
+{
+    if (column == 0) {
+        return;
+    }
+
+    if (m_dolphinViewController->itemView() == column) {
+        m_dolphinViewController->setItemView(0);
+    }
+    // deleteWhenNotDragSource(column) does not necessarily delete column,
+    // and we want its preview generator destroyed immediately.
+    column->hide();
+    // Prevent automatic destruction of column when this DolphinColumnViewContainer
+    // is destroyed.
+    column->setParent(0);
+    column->disconnect();
+
+    if (DragAndDropHelper::instance().isDragSource(column)) {
+        // The column is a drag source (the feature "Open folders
+        // during drag operations" is used). Deleting the view
+        // during an ongoing drag operation is not allowed, so
+        // this will postponed.
+        if (m_dragSource != 0) {
+            // the old stored view is obviously not the drag source anymore
+            m_dragSource->deleteLater();
+            m_dragSource = 0;
+        }
+        column->hide();
+        column->setParent(0);
+        column->disconnect();
+
+        m_dragSource = column;
+    } else {
+        column->deleteLater();
+    }
+}
+
+#include "dolphincolumnviewcontainer.moc"