Show an undetermined progress indication within one second after changing an URL.

svn path=/trunk/KDE/kdebase/apps/; revision=1205329

2 files changed, 24 insertions, 7 deletions

diff --git a/src/statusbar/dolphinstatusbar.cpp b/src/statusbar/dolphinstatusbar.cpp
index 4cfa3aeae..dfa5be21c 100644
--- a/src/statusbar/dolphinstatusbar.cpp
+++ b/src/statusbar/dolphinstatusbar.cpp
@@ -37,6 +37,7 @@
 #include <QLabel>
 #include <QProgressBar>
 #include <QToolButton>
+#include <QTime>
 #include <QTimer>
 
 #include <views/dolphinview.h>
@@ -54,6 +55,7 @@ DolphinStatusBar::DolphinStatusBar(QWidget* parent, DolphinView* view) :
     m_progressBar(0),
     m_stopButton(0),
     m_progress(100),
+    m_showProgressBarTimer(0),
     m_messageTimeStamp()
 {
     connect(m_view, SIGNAL(urlChanged(const KUrl&)),
@@ -114,6 +116,11 @@ DolphinStatusBar::DolphinStatusBar(QWidget* parent, DolphinView* view) :
     m_progressBar = new QProgressBar(this);
     m_progressBar->hide();
 
+    m_showProgressBarTimer = new QTimer(this);
+    m_showProgressBarTimer->setInterval(1000);
+    m_showProgressBarTimer->setSingleShot(true);
+    connect(m_showProgressBarTimer, SIGNAL(timeout()), this, SLOT(updateProgressInfo()));
+
     // Initialize top layout and size policies
     const int fontHeight = QFontMetrics(m_messageLabel->font()).height();
     const int zoomWidgetHeight = m_zoomWidget->minimumSizeHint().height();
@@ -222,6 +229,7 @@ void DolphinStatusBar::setProgress(int percent)
         percent = 100;
     }
 
+    const bool progressRestarted = (percent < 100) && (percent < m_progress);
     m_progress = percent;
     if (m_messageLabel->type() == KonqStatusBarMessageLabel::Error) {
         // Don't update any widget or status bar text if an
@@ -229,8 +237,17 @@ void DolphinStatusBar::setProgress(int percent)
         return;
     }
 
+    if (progressRestarted && !m_progressBar->isVisible()) {
+        // Show the progress bar delayed: In the case if 100 % are reached within
+        // a short time, no progress bar will be shown at all.
+        m_showProgressBarTimer->start();
+    }
+
     m_progressBar->setValue(m_progress);
-    if (!m_progressBar->isVisible() || (percent == 100)) {
+    if (percent == 100) {
+        // The end of the progress has been reached. Assure that the progress bar
+        // gets hidden and the extensions widgets get visible again.
+        m_showProgressBarTimer->stop();
         updateProgressInfo();
     }
 
diff --git a/src/statusbar/dolphinstatusbar.h b/src/statusbar/dolphinstatusbar.h
index 2c1378372..6eef520a6 100644
--- a/src/statusbar/dolphinstatusbar.h
+++ b/src/statusbar/dolphinstatusbar.h
@@ -32,6 +32,7 @@ class QLabel;
 class QProgressBar;
 class QToolButton;
 class QSlider;
+class QTimer;
 
 /**
  * @brief Represents the statusbar of a Dolphin view.
@@ -86,11 +87,9 @@ public:
 
     /**
      * Sets the progress in percent (0 - 100). The
-     * progress is shown with a delay of 300 milliseconds:
-     * if the progress does reach 100 % within 300 milliseconds,
-     * the progress is not shown at all. This assures that
-     * no flickering occurs for showing a progress of fast
-     * operations.
+     * progress is shown delayed by 1 second:
+     * If the progress does reach 100 % within 1 second,
+     * the progress is not shown at all.
      */
     void setProgress(int percent);
     int progress() const;
@@ -142,9 +141,9 @@ private slots:
     void zoomIn();
     void showZoomSliderToolTip(int zoomLevel);
 
-private:
     void updateProgressInfo();
 
+private:
     /**
      * Makes the space information widget and zoom slider widget
      * visible, if \a visible is true and the settings allow to show
@@ -173,6 +172,7 @@ private:
     QProgressBar* m_progressBar;
     QToolButton* m_stopButton;
     int m_progress;
+    QTimer* m_showProgressBarTimer;
 
     // Timestamp when the last message has been set that has not the type
     // 'Default'. The timestamp is used to prevent that default messages