From 08a41cf525193e90ce8f397476ac3825e5e9fdb8 Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Sat, 30 Jul 2011 15:18:29 +0200
Subject: Redraw listening position line in timer.

---
 dgedit/canvastoollisten.cc | 25 ++++++++++++++++++++++---
 dgedit/canvastoollisten.h  |  6 ++++++
 2 files changed, 28 insertions(+), 3 deletions(-)

diff --git a/dgedit/canvastoollisten.cc b/dgedit/canvastoollisten.cc
index 0734cf5..74bf176 100644
--- a/dgedit/canvastoollisten.cc
+++ b/dgedit/canvastoollisten.cc
@@ -26,7 +26,7 @@
  */
 #include "canvastoollisten.h"
 
-#define BUFSZ 1024
+#define BUFSZ 1024 * 2
 
 Player::Player(Canvas *c)
 {
@@ -65,12 +65,12 @@ void Player::run()
       }
 
       ao_play(dev, (char*)s, BUFSZ * sizeof(short));
-      canvas->update();
+      //      canvas->update();
 
       pos += BUFSZ;
 
     } else {
-      msleep(100);
+      msleep(22);
     }
   }
 }
@@ -78,20 +78,27 @@ void Player::run()
 CanvasToolListen::CanvasToolListen(Canvas *c)
   : player(c)
 {
+  lastpos = 0;
   canvas = c ;
   player.start();
+  QObject::connect(&timer, SIGNAL(timeout()), this, SLOT(update()));
 }
 
 bool CanvasToolListen::mousePressEvent(QMouseEvent *event)
 {
   player.pos = canvas->unmapX(event->x());
   player.playing = true;
+  canvas->update();
+  timer.start(50);
   return true;
 }
 
 bool CanvasToolListen::mouseReleaseEvent(QMouseEvent *event)
 {
   player.playing = false;
+  timer.stop();
+  lastpos = 0;
+  canvas->update();
   return true;
 }
 
@@ -105,3 +112,15 @@ void CanvasToolListen::paintEvent(QPaintEvent *event, QPainter &painter)
                      event->rect().y() + event->rect().height());
    }
 }
+
+void CanvasToolListen::update()
+{
+  size_t pos = player.pos;
+  size_t last = canvas->mapX(lastpos);
+  size_t x = canvas->mapX(player.pos);
+  QRect r(last, 0,
+          x - last + 2, canvas->height());
+  
+  canvas->update(r);
+  lastpos = pos;
+}
diff --git a/dgedit/canvastoollisten.h b/dgedit/canvastoollisten.h
index dfbea97..22daafd 100644
--- a/dgedit/canvastoollisten.h
+++ b/dgedit/canvastoollisten.h
@@ -30,6 +30,7 @@
 #include "canvastool.h"
 
 #include <QThread>
+#include <QTimer>
 
 #include <ao/ao.h>
 
@@ -59,10 +60,15 @@ public:
   bool mouseReleaseEvent(QMouseEvent *event);
   void paintEvent(QPaintEvent *event, QPainter &painter);
 
+public slots:
+  void update();
+
 private:
   Canvas *canvas;
 
   Player player;
+  QTimer timer;
+  size_t lastpos;
 };
 
 #endif/*__DRUMGIZMO_CANVASTOOLLISTEN_H__*/
-- 
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