don't use 32bit color depth on N900 (16bit display); on other platforms, use 32bit...

[presencevnc] / src / scrollarea.h

diff --git a/src/scrollarea.h b/src/scrollarea.h
index 1505b3b..7faf680 100644 (file)
--- a/src/scrollarea.h
+++ b/src/scrollarea.h
@@ -19,17 +19,20 @@
 #ifndef SCROLLAREA_H
 #define SCROLLAREA_H
 
-#include <QScrollArea>
-#include <QLabel>
-#include <QTimer>
+#include "fullscreenexitbutton.h"
+
+#include <QtGui>
 
 //fixes tearing during scrolling and can display messages
 class ScrollArea : public QScrollArea
 {
+    Q_OBJECT
 public:
     explicit ScrollArea(QWidget *parent):
-        QScrollArea(parent) {
-        message.setParent(this);
+        QScrollArea(parent),
+        message(this),
+        fullscreen_exit_button(parent) //owned by parent!
+    {
         message.setVisible(false);
         message.setAlignment(Qt::AlignCenter);
         message.setWordWrap(true);
@@ -42,16 +45,38 @@ public:
         message.setAutoFillBackground(true);
 
         message_timer.setSingleShot(true);
-        message_timer.setInterval(2500);
+        message_timer.setInterval(4000);
         connect(&message_timer, SIGNAL(timeout()),
                 &message, SLOT(hide()));
+
+        connect(&fullscreen_exit_button, SIGNAL(clicked()),
+            this, SIGNAL(fullscreenButtonClicked()));
+
+        button_reenable_timer.setSingleShot(true);
+        button_reenable_timer.setInterval(500);
+        connect(&button_reenable_timer, SIGNAL(timeout()),
+                &fullscreen_exit_button, SLOT(reenable()));
+
+#ifdef Q_WS_MAEMO_5
+        // disable overshooting because it somehow causes repaint events for the whole widget (slow)
+        QAbstractKineticScroller *scroller = property("kineticScroller").value<QAbstractKineticScroller *>();
+        if (scroller)
+            scroller->setOvershootPolicy(QAbstractKineticScroller::OvershootAlwaysOff);
+#endif
     }
 
+public slots:
     void showMessage(const QString &s) {
         message.setText(s);
         message.show();
         message_timer.start();
     }
+
+    //provided for convenience
+    void showMessage(QString /*title*/, QString msg) { showMessage(msg); }
+
+signals:
+    void fullscreenButtonClicked();
 protected:
     virtual void resizeEvent(QResizeEvent* ev) {
         QScrollArea::resizeEvent(ev);
@@ -60,15 +85,17 @@ protected:
     virtual void scrollContentsBy(int dx, int dy) {
         QScrollArea::scrollContentsBy(dx, dy);
         if(widget()) {
-            const QRegion visible_region_new = widget()->visibleRegion();
-            const QRegion visible_region_old = visible_region_new.translated(-dx, -dy);
-
-            //now update only the region that became visible
-            widget()->update(visible_region_new - visible_region_old);
+            //overlay-widgets slow down scrolling
+            message.hide();
+            fullscreen_exit_button.hide();
+            fullscreen_exit_button.setEnabled(false);
+            button_reenable_timer.start();
         }
     }
 private:
     QLabel message;
     QTimer message_timer;
+    FullScreenExitButton fullscreen_exit_button;
+    QTimer button_reenable_timer;
 };
 #endif