New and powerful KListView. Still pending class renaming. There are two

[dolphin.git] / src / dolphiniconsview.cpp

diff --git a/src/dolphiniconsview.cpp b/src/dolphiniconsview.cpp
index 71bf7c76fffd6637051eca11158be3a3b8bfd1c7..cf5be61ef5d9042c3348a3fd2c3085554e8c7102 100644 (file)
--- a/src/dolphiniconsview.cpp
+++ b/src/dolphiniconsview.cpp
@@ -21,43 +21,72 @@
 
 #include "dolphincontroller.h"
 #include "dolphinsettings.h"
 
 #include "dolphincontroller.h"
 #include "dolphinsettings.h"

+#include "dolphinitemcategorizer.h"

 
 #include "dolphin_iconsmodesettings.h"
 
 
 #include "dolphin_iconsmodesettings.h"
 

-#include <assert.h>
-#include <kdirmodel.h>
-#include <kfileitem.h>
-

 #include <QAbstractProxyModel>
 #include <QAbstractProxyModel>

+#include <QApplication>
+#include <QPainter>
+#include <QPoint>

 
 DolphinIconsView::DolphinIconsView(QWidget* parent, DolphinController* controller) :
 
 DolphinIconsView::DolphinIconsView(QWidget* parent, DolphinController* controller) :

-    QListView(parent),
-    m_controller(controller)
+    KListView(parent),
+    m_controller(controller),
+    m_dragging(false)

 {
 {

-    assert(controller != 0);
+    Q_ASSERT(controller != 0);
+    setViewMode(QListView::IconMode);

     setResizeMode(QListView::Adjust);
     setResizeMode(QListView::Adjust);

+    setSpacing(10);
+    setMouseTracking(true);
+    viewport()->setAttribute(Qt::WA_Hover);

 
 

-    connect(this, SIGNAL(clicked(const QModelIndex&)),
+    if (KGlobalSettings::singleClick()) {
+        connect(this, SIGNAL(clicked(const QModelIndex&)),
+                controller, SLOT(triggerItem(const QModelIndex&)));
+    } else {
+        connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
+                controller, SLOT(triggerItem(const QModelIndex&)));
+    }
+    connect(this, SIGNAL(activated(const QModelIndex&)),

             controller, SLOT(triggerItem(const QModelIndex&)));
             controller, SLOT(triggerItem(const QModelIndex&)));

+    connect(this, SIGNAL(entered(const QModelIndex&)),
+            controller, SLOT(emitItemEntered(const QModelIndex&)));
+    connect(this, SIGNAL(viewportEntered()),
+            controller, SLOT(emitViewportEntered()));
+    connect(controller, SIGNAL(showPreviewChanged(bool)),
+            this, SLOT(slotShowPreviewChanged(bool)));
+    connect(controller, SIGNAL(showAdditionalInfoChanged(bool)),
+            this, SLOT(slotShowAdditionalInfoChanged(bool)));
+    connect(controller, SIGNAL(zoomIn()),
+            this, SLOT(zoomIn()));
+    connect(controller, SIGNAL(zoomOut()),
+            this, SLOT(zoomOut()));

 
     // apply the icons mode settings to the widget
     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
 
     // apply the icons mode settings to the widget
     const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();

-    assert(settings != 0);
+    Q_ASSERT(settings != 0);

 
 

-    if (settings->arrangement() == QListView::TopToBottom) {
-        setViewMode(QListView::IconMode);
-    }
-    else {
-        setViewMode(QListView::ListMode);
-    }
+    m_viewOptions = KListView::viewOptions();
+    m_viewOptions.showDecorationSelected = true;

 
 

-    setGridSize(QSize(settings->gridWidth(), settings->gridHeight()));
-    setSpacing(settings->gridSpacing());
+    QFont font(settings->fontFamily(), settings->fontSize());
+    font.setItalic(settings->italicFont());
+    font.setBold(settings->boldFont());
+    m_viewOptions.font = font;

 
 

-    m_viewOptions = QListView::viewOptions();
-    m_viewOptions.font = QFont(settings->fontFamily(), settings->fontSize());
-    const int iconSize = settings->iconSize();
-    m_viewOptions.decorationSize = QSize(iconSize, iconSize);
+    setWordWrap(settings->numberOfTextlines() > 1);
+    updateGridSize(controller->showPreview(), controller->showAdditionalInfo());
+
+    if (settings->arrangement() == QListView::TopToBottom) {
+        setFlow(QListView::LeftToRight);
+        m_viewOptions.decorationPosition = QStyleOptionViewItem::Top;
+    } else {
+        setFlow(QListView::TopToBottom);
+        m_viewOptions.decorationPosition = QStyleOptionViewItem::Left;
+        m_viewOptions.displayAlignment = Qt::AlignLeft | Qt::AlignVCenter;
+    }

 }
 
 DolphinIconsView::~DolphinIconsView()
 }
 
 DolphinIconsView::~DolphinIconsView()


@@ -71,14 +100,21 @@ QStyleOptionViewItem DolphinIconsView::viewOptions() const
 
 void DolphinIconsView::contextMenuEvent(QContextMenuEvent* event)
 {
 
 void DolphinIconsView::contextMenuEvent(QContextMenuEvent* event)
 {

-    QListView::contextMenuEvent(event);
+    KListView::contextMenuEvent(event);

     m_controller->triggerContextMenuRequest(event->pos());
 }
 
     m_controller->triggerContextMenuRequest(event->pos());
 }
 

-void DolphinIconsView::mouseReleaseEvent(QMouseEvent* event)
+void DolphinIconsView::mousePressEvent(QMouseEvent* event)

 {
 {

-    QListView::mouseReleaseEvent(event);

     m_controller->triggerActivation();
     m_controller->triggerActivation();

+    if (!indexAt(event->pos()).isValid()) {
+        const Qt::KeyboardModifiers modifier = QApplication::keyboardModifiers();
+        if (!(modifier & Qt::ShiftModifier) && !(modifier & Qt::ControlModifier)) {
+            clearSelection();
+        }
+    }
+
+    KListView::mousePressEvent(event);

 }
 
 void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)
 }
 
 void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)


@@ -86,18 +122,205 @@ void DolphinIconsView::dragEnterEvent(QDragEnterEvent* event)
     if (event->mimeData()->hasUrls()) {
         event->acceptProposedAction();
     }
     if (event->mimeData()->hasUrls()) {
         event->acceptProposedAction();
     }

+    m_dragging = true;
+}
+
+void DolphinIconsView::dragLeaveEvent(QDragLeaveEvent* event)
+{
+    KListView::dragLeaveEvent(event);
+
+    // TODO: remove this code when the issue #160611 is solved in Qt 4.4
+    m_dragging = false;
+    setDirtyRegion(m_dropRect);
+}
+
+void DolphinIconsView::dragMoveEvent(QDragMoveEvent* event)
+{
+    KListView::dragMoveEvent(event);
+
+    // TODO: remove this code when the issue #160611 is solved in Qt 4.4
+    const QModelIndex index = indexAt(event->pos());
+    setDirtyRegion(m_dropRect);
+    m_dropRect = visualRect(index);
+    setDirtyRegion(m_dropRect);

 }
 
 void DolphinIconsView::dropEvent(QDropEvent* event)
 {
     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
 }
 
 void DolphinIconsView::dropEvent(QDropEvent* event)
 {
     const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());

-    if (urls.isEmpty() || (event->source() == this)) {
-        QListView::dropEvent(event);
-    }
-    else {
+    if (!urls.isEmpty()) {
+        m_controller->indicateDroppedUrls(urls,
+                                          indexAt(event->pos()),
+                                          event->source());

         event->acceptProposedAction();
         event->acceptProposedAction();

-        m_controller->indicateDroppedUrls(urls, event->pos());

     }
     }

+    KListView::dropEvent(event);
+    m_dragging = false;
+}
+
+void DolphinIconsView::paintEvent(QPaintEvent* event)
+{
+    KListView::paintEvent(event);
+
+    // TODO: remove this code when the issue #160611 is solved in Qt 4.4
+    if (m_dragging) {
+        const QBrush& brush = m_viewOptions.palette.brush(QPalette::Normal, QPalette::Highlight);
+        DolphinController::drawHoverIndication(viewport(), m_dropRect, brush);
+    }
+}
+
+void DolphinIconsView::slotShowPreviewChanged(bool showPreview)
+{
+    updateGridSize(showPreview, m_controller->showAdditionalInfo());
+}
+
+void DolphinIconsView::slotShowAdditionalInfoChanged(bool showAdditionalInfo)
+{
+    updateGridSize(m_controller->showPreview(), showAdditionalInfo);
+}
+
+void DolphinIconsView::zoomIn()
+{
+    if (isZoomInPossible()) {
+        IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
+
+        const int oldIconSize = settings->iconSize();
+        int newIconSize = oldIconSize;
+
+        const bool showPreview = m_controller->showPreview();
+        if (showPreview) {
+            const int previewSize = increasedIconSize(settings->previewSize());
+            settings->setPreviewSize(previewSize);
+        } else {
+            newIconSize = increasedIconSize(oldIconSize);
+            settings->setIconSize(newIconSize);
+            if (settings->previewSize() < newIconSize) {
+                // assure that the preview size is always >= the icon size
+                settings->setPreviewSize(newIconSize);
+            }
+        }
+
+        // increase also the grid size
+        const int diff = newIconSize - oldIconSize;
+        settings->setItemWidth(settings->itemWidth() + diff);
+        settings->setItemHeight(settings->itemHeight() + diff);
+
+        updateGridSize(showPreview, m_controller->showAdditionalInfo());
+    }
+}
+
+void DolphinIconsView::zoomOut()
+{
+    if (isZoomOutPossible()) {
+        IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
+
+        const int oldIconSize = settings->iconSize();
+        int newIconSize = oldIconSize;
+
+        const bool showPreview = m_controller->showPreview();
+        if (showPreview) {
+            const int previewSize = decreasedIconSize(settings->previewSize());
+            settings->setPreviewSize(previewSize);
+            if (settings->iconSize() > previewSize) {
+                // assure that the icon size is always <= the preview size
+                newIconSize = previewSize;
+                settings->setIconSize(newIconSize);
+            }
+        } else {
+            newIconSize = decreasedIconSize(settings->iconSize());
+            settings->setIconSize(newIconSize);
+        }
+
+        // decrease also the grid size
+        const int diff = oldIconSize - newIconSize;
+        settings->setItemWidth(settings->itemWidth() - diff);
+        settings->setItemHeight(settings->itemHeight() - diff);
+
+        updateGridSize(showPreview, m_controller->showAdditionalInfo());
+    }
+}
+
+bool DolphinIconsView::isZoomInPossible() const
+{
+    IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
+    const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
+    return size < K3Icon::SizeEnormous;
+}
+
+bool DolphinIconsView::isZoomOutPossible() const
+{
+    IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
+    const int size = m_controller->showPreview() ? settings->previewSize() : settings->iconSize();
+    return size > K3Icon::SizeSmall;
+}
+
+int DolphinIconsView::increasedIconSize(int size) const
+{
+    // TODO: get rid of K3Icon sizes
+    int incSize = 0;
+    switch (size) {
+    case K3Icon::SizeSmall:       incSize = K3Icon::SizeSmallMedium; break;
+    case K3Icon::SizeSmallMedium: incSize = K3Icon::SizeMedium; break;
+    case K3Icon::SizeMedium:      incSize = K3Icon::SizeLarge; break;
+    case K3Icon::SizeLarge:       incSize = K3Icon::SizeHuge; break;
+    case K3Icon::SizeHuge:        incSize = K3Icon::SizeEnormous; break;
+    default: Q_ASSERT(false); break;
+    }
+    return incSize;
+}
+
+int DolphinIconsView::decreasedIconSize(int size) const
+{
+    // TODO: get rid of K3Icon sizes
+    int decSize = 0;
+    switch (size) {
+    case K3Icon::SizeSmallMedium: decSize = K3Icon::SizeSmall; break;
+    case K3Icon::SizeMedium: decSize = K3Icon::SizeSmallMedium; break;
+    case K3Icon::SizeLarge: decSize = K3Icon::SizeMedium; break;
+    case K3Icon::SizeHuge: decSize = K3Icon::SizeLarge; break;
+    case K3Icon::SizeEnormous: decSize = K3Icon::SizeHuge; break;
+    default: Q_ASSERT(false); break;
+    }
+    return decSize;
+}
+
+void DolphinIconsView::updateGridSize(bool showPreview, bool showAdditionalInfo)
+{
+    const IconsModeSettings* settings = DolphinSettings::instance().iconsModeSettings();
+    Q_ASSERT(settings != 0);
+
+    int itemWidth = settings->itemWidth();
+    int itemHeight = settings->itemHeight();
+    int size = settings->iconSize();
+
+    if (showPreview) {
+        const int previewSize = settings->previewSize();
+        const int diff = previewSize - size;
+        Q_ASSERT(diff >= 0);
+        itemWidth  += diff;
+        itemHeight += diff;
+
+        size = previewSize;
+    }
+
+    if (showAdditionalInfo) {
+        itemHeight += m_viewOptions.font.pointSize() * 2;
+    }
+
+    if (settings->arrangement() == QListView::TopToBottom) {
+        // The decoration width indirectly defines the maximum
+        // width for the text wrapping. To use the maximum item width
+        // for text wrapping, it is used as decoration width.
+        m_viewOptions.decorationSize = QSize(itemWidth, size);
+    } else {
+        m_viewOptions.decorationSize = QSize(size, size);
+    }
+
+    const int spacing = settings->gridSpacing();
+    setGridSize(QSize(itemWidth + spacing, itemHeight + spacing));
+
+    m_controller->setZoomInPossible(isZoomInPossible());
+    m_controller->setZoomOutPossible(isZoomOutPossible());

 }
 
 #include "dolphiniconsview.moc"
 }
 
 #include "dolphiniconsview.moc"