Since Qt 4.5 it is possible to have translucient windows. The tooltip approach having a delegate and custom drawing + animation code for transparent tooltips has now been replaced by a translucient window where any kind of (animated) widget can be embedded. Still a lot of finetuning has to be done, but maybe this code can be part of kdelibs in KDE 4.5 (systemsettings currently used the Dolphin tooltips code).

Additionally the tooltip uses now KMetaDataWidget instead of using KMetaInfo. This assures that no blocking of the application will occur even if there is a buggy Strigi analyzer that ignores the maximum size-setting and might block the retrieving of the meta data.

BUG: 182941
BUG: 195878

svn path=/trunk/KDE/kdebase/apps/; revision=1044485

1 files changed, 56 insertions, 55 deletions

diff --git a/src/tooltips/tooltipmanager.cpp b/src/tooltips/tooltipmanager.cpp
index fbb36aaf5..9851ece6b 100644
--- a/src/tooltips/tooltipmanager.cpp
+++ b/src/tooltips/tooltipmanager.cpp
@@ -19,25 +19,22 @@
 
 #include "tooltipmanager.h"
 
-#include "dolphintooltip.h"
 #include "dolphinmodel.h"
 #include "dolphinsortfilterproxymodel.h"
 
 #include <kicon.h>
-#include <tooltips/ktooltip.h>
 #include <kio/previewjob.h>
 
+#include "panels/information/kmetadatawidget.h"
+#include "tooltips/ktooltip.h"
+
 #include <QApplication>
 #include <QDesktopWidget>
+#include <QHBoxLayout>
+#include <QLabel>
+#include <QScrollArea>
 #include <QScrollBar>
 #include <QTimer>
-#include <QToolTip>
-
-const int ICON_WIDTH = 128;
-const int ICON_HEIGHT = 128;
-const int PREVIEW_DELAY = 250;
-
-K_GLOBAL_STATIC(DolphinBalloonTooltipDelegate, g_delegate)
 
 ToolTipManager::ToolTipManager(QAbstractItemView* parent,
                                DolphinSortFilterProxyModel* model) :
@@ -54,8 +51,6 @@ ToolTipManager::ToolTipManager(QAbstractItemView* parent,
     m_hasDefaultIcon(false),
     m_previewPixmap()
 {
-    KToolTip::setToolTipDelegate(g_delegate);
-
     m_dolphinModel = static_cast<DolphinModel*>(m_proxyModel->sourceModel());
     connect(parent, SIGNAL(entered(const QModelIndex&)),
             this, SLOT(requestToolTip(const QModelIndex&)));
@@ -157,36 +152,55 @@ void ToolTipManager::prepareToolTip()
         m_waitOnPreviewTimer->start(250);
     }
 
-    const QString text = m_item.getToolTipText();
     if (!m_previewPixmap.isNull()) {
-        showToolTip(KIcon(m_previewPixmap), text);
+        showToolTip(m_previewPixmap);
     } else if (!m_hasDefaultIcon) {
-        const QPixmap image(KIcon(m_item.iconName()).pixmap(ICON_WIDTH, ICON_HEIGHT));
-        showToolTip(image, text);
+        const QPixmap image(KIcon(m_item.iconName()).pixmap(128, 128));
+        showToolTip(image);
         m_hasDefaultIcon = true;
     }
 }
 
-void ToolTipManager::showToolTip(const QIcon& icon, const QString& text)
+void ToolTipManager::startPreviewJob()
+{
+    m_generatingPreview = true;
+    KIO::PreviewJob* job = KIO::filePreview(KFileItemList() << m_item, 256, 256);
+
+    connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
+            this, SLOT(setPreviewPix(const KFileItem&, const QPixmap&)));
+    connect(job, SIGNAL(failed(const KFileItem&)),
+            this, SLOT(previewFailed()));
+}
+
+
+void ToolTipManager::setPreviewPix(const KFileItem& item,
+                                   const QPixmap& pixmap)
+{
+    if ((m_item.url() != item.url()) || pixmap.isNull()) {
+        // an old preview or an invalid preview has been received
+        previewFailed();
+    } else {
+        m_previewPixmap = pixmap;
+        m_generatingPreview = false;
+    }
+}
+
+void ToolTipManager::previewFailed()
+{
+    m_generatingPreview = false;
+}
+
+
+void ToolTipManager::showToolTip(const QPixmap& pixmap)
 {
     if (QApplication::mouseButtons() & Qt::LeftButton) {
         return;
     }
 
-    KToolTipItem* tip = new KToolTipItem(icon, text);
+    QWidget* tip = createTipContent(pixmap);
 
-    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);
+    // calculate the x- and y-position of the tooltip
+    const QSize size = tip->sizeHint();
     const QRect desktop = QApplication::desktop()->screenGeometry(m_itemRect.bottomRight());
 
     // m_itemRect defines the area of the item, where the tooltip should be
@@ -225,37 +239,24 @@ void ToolTipManager::showToolTip(const QIcon& icon, const QString& text)
     KToolTip::showTip(QPoint(x, y), tip);
 }
 
-
-
-void ToolTipManager::startPreviewJob()
+QWidget* ToolTipManager::createTipContent(const QPixmap& pixmap) const
 {
-    m_generatingPreview = true;
-    KIO::PreviewJob* job = KIO::filePreview(KFileItemList() << m_item,
-                                            PREVIEW_WIDTH,
-                                            PREVIEW_HEIGHT);
+    QWidget* tipContent = new QWidget();
 
-    connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
-            this, SLOT(setPreviewPix(const KFileItem&, const QPixmap&)));
-    connect(job, SIGNAL(failed(const KFileItem&)),
-            this, SLOT(previewFailed()));
-}
+    QLabel* pixmapLabel = new QLabel(tipContent);
+    pixmapLabel->setPixmap(pixmap);
+    pixmapLabel->setFixedSize(pixmap.size());
 
+    KMetaDataWidget* metaDataWidget = new KMetaDataWidget(tipContent);
+    metaDataWidget->setItem(m_item);
+    metaDataWidget->setFixedSize(metaDataWidget->sizeHint());
 
-void ToolTipManager::setPreviewPix(const KFileItem& item,
-                                   const QPixmap& pixmap)
-{
-    if ((m_item.url() != item.url()) || pixmap.isNull()) {
-        // an old preview or an invalid preview has been received
-        previewFailed();
-    } else {
-        m_previewPixmap = pixmap;
-        m_generatingPreview = false;
-    }
-}
+    QHBoxLayout* tipLayout = new QHBoxLayout(tipContent);
+    tipLayout->setMargin(0);
+    tipLayout->addWidget(pixmapLabel);
+    tipLayout->addWidget(metaDataWidget);
 
-void ToolTipManager::previewFailed()
-{
-    m_generatingPreview = false;
+    return tipContent;
 }
 
 #include "tooltipmanager.moc"