X-Git-Url: https://cloud.milkyroute.net/gitweb/dolphin.git/blobdiff_plain/9d4250e10ada4e2410722951dbd406263b61041c..f28ee3152a05f09abd117df19bb99d0966947e6b:/src/tooltipmanager.cpp

diff --git a/src/tooltipmanager.cpp b/src/tooltipmanager.cpp
index 6af3bb8b6..cc3c9eb5a 100644
--- a/src/tooltipmanager.cpp
+++ b/src/tooltipmanager.cpp
@@ -21,10 +21,17 @@
 
 #include "dolphinmodel.h"
 #include "dolphinsortfilterproxymodel.h"
-#include "ktooltip.h"
-#include "kicon.h"
 
+#include <kformattedballoontipdelegate.h>
+#include <kicon.h>
+#include <ktooltip.h>
+
+#include <QApplication>
+#include <QDesktopWidget>
 #include <QTimer>
+#include <QToolTip>
+
+K_GLOBAL_STATIC(KFormattedBalloonTipDelegate, g_delegate)
 
 ToolTipManager::ToolTipManager(QAbstractItemView* parent,
                                DolphinSortFilterProxyModel* model) :
@@ -34,10 +41,9 @@ ToolTipManager::ToolTipManager(QAbstractItemView* parent,
     m_proxyModel(model),
     m_timer(0),
     m_item(),
-    m_pos(),
-    m_delegate()
+    m_itemRect()
 {
-    KToolTip::setToolTipDelegate(&m_delegate);
+    KToolTip::setToolTipDelegate(g_delegate);
 
     m_dolphinModel = static_cast<DolphinModel*>(m_proxyModel->sourceModel());
     connect(parent, SIGNAL(entered(const QModelIndex&)),
@@ -57,6 +63,11 @@ ToolTipManager::~ToolTipManager()
 {
 }
 
+void ToolTipManager::hideTip()
+{
+    hideToolTip();
+}
+
 bool ToolTipManager::eventFilter(QObject* watched, QEvent* event)
 {
     if ((watched == m_view->viewport()) && (event->type() == QEvent::Leave)) {
@@ -68,15 +79,20 @@ bool ToolTipManager::eventFilter(QObject* watched, QEvent* event)
 
 void ToolTipManager::requestToolTip(const QModelIndex& index)
 {
-    KToolTip::hideTip();
+    if (index.column() == DolphinModel::Name) {
+        KToolTip::hideTip();
 
-    const QRect rect = m_view->visualRect(index);
-    m_pos = m_view->viewport()->mapToGlobal(rect.bottomRight());
+        m_itemRect = m_view->visualRect(index);
+        const QPoint pos = m_view->viewport()->mapToGlobal(m_itemRect.topLeft());
+        m_itemRect.moveTo(pos);
 
-    const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
-    m_item = m_dolphinModel->itemForIndex(dirIndex);
+        const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
+        m_item = m_dolphinModel->itemForIndex(dirIndex);
 
-    m_timer->start(500);
+        m_timer->start(500);
+    } else {
+        hideToolTip();
+    }
 }
 
 void ToolTipManager::hideToolTip()
@@ -88,7 +104,41 @@ void ToolTipManager::hideToolTip()
 void ToolTipManager::showToolTip()
 {
     KToolTipItem* tip = new KToolTipItem(KIcon(m_item.iconName()), m_item.getToolTipText());
-    KToolTip::showTip(m_pos, tip);
+
+    KStyleOptionToolTip option;
+    // TODO: get option content from KToolTip or add KToolTip::sizeHint() method
+    option.direction      = QApplication::layoutDirection();
+    option.fontMetrics    = QFontMetrics(QToolTip::font());
+    option.activeCorner   = KStyleOptionToolTip::TopLeftCorner;
+    option.palette        = QToolTip::palette();
+    option.font           = QToolTip::font();
+    option.rect           = QRect();
+    option.state          = QStyle::State_None;
+    option.decorationSize = QSize(32, 32);
+
+    const QSize size = g_delegate->sizeHint(&option, tip);
+    const QRect desktop = QApplication::desktop()->availableGeometry();
+
+    // m_itemRect defines the area of the item, where the tooltip should be
+    // shown. Per default the tooltip is shown in the bottom right corner.
+    // If the tooltip content exceeds the desktop borders, it must be assured that:
+    // - the content is fully visible
+    // - the content is not drawn inside m_itemRect
+    int x = m_itemRect.right();
+    int y = m_itemRect.bottom();
+    const int xDiff = x + size.width()  - desktop.width();
+    const int yDiff = y + size.height() - desktop.height();
+
+    if ((xDiff > 0) && (yDiff > 0)) {
+        x = m_itemRect.left() - size.width();
+        y = m_itemRect.top() - size.height();
+    } else if (xDiff > 0) {
+        x -= xDiff;
+    } else if (yDiff > 0) {
+        y -= yDiff;
+    }
+
+    KToolTip::showTip(QPoint(x, y), tip);
 }
 
 #include "tooltipmanager.moc"