Very rough initial attempt at previews-in-tooltip for Konqueror and Dolphin. Still needs extensive work in positioning, scaling/ padding items to fit, and timing things so that the previews are more likely to have been generated when the tooltip is positioned and displayed.

CCBUG:161848

svn path=/trunk/KDE/kdebase/apps/; revision=848984

1 files changed, 61 insertions, 0 deletions

diff --git a/src/dolphintooltip.cpp b/src/dolphintooltip.cpp
new file mode 100644
index 000000000..67b5fd6f5
--- /dev/null
+++ b/src/dolphintooltip.cpp
@@ -0,0 +1,61 @@
+#include "dolphintooltip.h"
+
+#include <kicon.h>
+#include <kio/previewjob.h>
+#include <kfileitem.h>
+
+#include <QtGui/QPixmap>
+
+const int PREVIEW_WIDTH = 256;
+const int PREVIEW_HEIGHT = 256;
+
+DolphinToolTipItem::DolphinToolTipItem(const KFileItem & fileItem) :
+        KToolTipItem(KIcon(fileItem.iconName()), fileItem.getToolTipText(), UserType)
+{
+
+    //if (icon().actualSize(QSize(256,256)).width() != PREVIEW_WIDTH)
+    /*{
+        QPixmap paddedImage(QSize(PREVIEW_WIDTH, PREVIEW_HEIGHT));
+        paddedImage.fill(Qt::transparent);
+        QPainter painter(&paddedImage);
+        KIcon kicon(fileItem.iconName());
+        painter.drawPixmap((PREVIEW_WIDTH - 128) / 2, (PREVIEW_HEIGHT - 128) / 2, kicon.pixmap(QSize(128,128))); 
+        setData(Qt::DecorationRole, QIcon(paddedImage));
+    }*/
+
+    // Initiate the preview job.
+    KFileItemList fileItems;
+    fileItems << fileItem;
+    KIO::PreviewJob* job = KIO::filePreview(fileItems, PREVIEW_WIDTH, PREVIEW_HEIGHT );
+    connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)),
+            this, SLOT(setPreview(const KFileItem&, const QPixmap&)));
+
+}
+DolphinToolTipItem::~DolphinToolTipItem()
+{
+}
+void DolphinToolTipItem::setPreview(const KFileItem& fileItem, const QPixmap& preview)
+{
+    Q_UNUSED(fileItem);
+   /* QPixmap paddedImage(QSize(PREVIEW_WIDTH, PREVIEW_HEIGHT));
+    paddedImage.fill(Qt::transparent);
+    QPainter painter(&paddedImage);
+    KIcon kicon(fileItem.iconName());
+    painter.drawPixmap((PREVIEW_WIDTH - preview.width()) / 2, (PREVIEW_HEIGHT - preview.height()) / 2, preview); 
+    setData(Qt::DecorationRole, QIcon(paddedImage));*/
+    setData(Qt::DecorationRole, QIcon(preview));
+};
+// Delegate everything to the base class, after re-setting the decorationSize
+// to the preview size.
+QSize DolphinBalloonTooltipDelegate::sizeHint(const KStyleOptionToolTip *option, const KToolTipItem *item) const
+{
+    KStyleOptionToolTip updatedStyleOption = *option;
+    updatedStyleOption.decorationSize = QSize(PREVIEW_WIDTH, PREVIEW_HEIGHT);
+    return KFormattedBalloonTipDelegate::sizeHint(&updatedStyleOption, item);
+}
+void DolphinBalloonTooltipDelegate::paint(QPainter *painter, const KStyleOptionToolTip *option, const KToolTipItem *item) const
+{    
+    KStyleOptionToolTip updatedStyleOption = *option;
+    updatedStyleOption.decorationSize = QSize(PREVIEW_WIDTH, PREVIEW_HEIGHT);
+    return KFormattedBalloonTipDelegate::paint(painter, &updatedStyleOption, item);
+}
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