introduce a SearchLineWidget, which is a SearchLineEdit + AnimatedWidget

this small widget is useful for providing a search line edit with an animated widget next to it, with the latter shown while the search is in progress
currently, the animation is slightly delayed, so we avoid very quick results (ie the next occurrence is on the same page) to show the animation for a very short time

svn path=/trunk/KDE/kdegraphics/okular/; revision=926299

ui/searchlineedit.cpp

@@ -11,10 +11,12 @@
 #include "searchlineedit.h"
 
 // local includes
+#include "animatedwidget.h"
 #include "core/document.h"
 
 // qt/kde includes
 #include <qapplication.h>
+#include <qlayout.h>
 #include <qtimer.h>
 #include <kcolorscheme.h>
 
@@ -189,4 +191,42 @@ void SearchLineEdit::searchFinished( int id, Okular::Document::SearchStatus endS
     emit searchStopped();
 }
 
+
+SearchLineWidget::SearchLineWidget( QWidget * parent, Okular::Document * document )
+    : QWidget( parent )
+{
+    QHBoxLayout *layout = new QHBoxLayout( this );
+    layout->setMargin( 0 );
+
+    m_edit = new SearchLineEdit( this, document );
+    layout->addWidget( m_edit );
+
+    m_anim = new AnimatedWidget( "process-working", this );
+    m_anim->setFixedSize( 22, 22 );
+    layout->addWidget( m_anim );
+
+    m_timer = new QTimer( this );
+    m_timer->setSingleShot( true );
+    connect( m_timer, SIGNAL( timeout() ), m_anim, SLOT( start() ) );
+
+    connect( m_edit, SIGNAL( searchStarted() ), this, SLOT( slotSearchStarted() ) );
+    connect( m_edit, SIGNAL( searchStopped() ), this, SLOT( slotSearchStopped() ) );
+}
+
+SearchLineEdit* SearchLineWidget::lineEdit() const
+{
+    return m_edit;
+}
+
+void SearchLineWidget::slotSearchStarted()
+{
+    m_timer->start( 100 );
+}
+
+void SearchLineWidget::slotSearchStopped()
+{
+    m_timer->stop();
+    m_anim->stop();
+}
+
 #include "searchlineedit.moc"

ui/searchlineedit.h

@@ -16,6 +16,7 @@
 #include <klineedit.h>
 
 class QTimer;
+class AnimatedWidget;
 
 /**
  * @short A line edit for find-as-you-type search. Outputs to the Document.
@@ -63,4 +64,22 @@ class SearchLineEdit : public KLineEdit
         void searchFinished( int id, Okular::Document::SearchStatus endStatus );
 };
 
+class SearchLineWidget : public QWidget
+{
+    Q_OBJECT
+    public:
+        SearchLineWidget( QWidget *parent, Okular::Document *document );
+
+        SearchLineEdit* lineEdit() const;
+
+    private slots:
+        void slotSearchStarted();
+        void slotSearchStopped();
+
+    private:
+        SearchLineEdit *m_edit;
+        AnimatedWidget* m_anim;
+        QTimer *m_timer;
+};
+
 #endif