SIMpad:

-Update all Widgets if we suspended the device. We implement
it by iterating over QApplication::allWidgets and calling
QWidget::update(). This approach should be more reliable
than the system and echo hack

2 files changed, 23 insertions, 9 deletions

diff --git a/libopie2/opiecore/device/odevice_simpad.cpp b/libopie2/opiecore/device/odevice_simpad.cpp
index 4ae3c4f..ebf0cbb 100644
--- a/libopie2/opiecore/device/odevice_simpad.cpp
+++ b/libopie2/opiecore/device/odevice_simpad.cpp
@@ -25,24 +25,25 @@
                              If not, write to the Free Software Foundation,
                              Inc., 59 Temple Place - Suite 330,
                              Boston, MA 02111-1307, USA.
 */
 
 #include "odevice_simpad.h"
 
 /* QT */
 #include <qapplication.h>
 #include <qfile.h>
 #include <qtextstream.h>
 #include <qwindowsystem_qws.h>
+#include <qwidgetlist.h>
 
 /* OPIE */
 #include <qpe/config.h>
 #include <qpe/resource.h>
 #include <qpe/sound.h>
 #include <qpe/qcopenvelope_qws.h>
 #include <opie2/okeyfilter.h>
 
 /* STD */
 #include <fcntl.h>
 #include <math.h>
 #include <stdlib.h>
@@ -306,41 +307,35 @@ void SIMpad::playAlarmSound()
     if(!snd.isFinished())
 	return;
 
     /* save as the Sound is static! */
     changeMixerForAlarm( 0, "/dev/sound/mixer" , &snd);
     snd. play();
 #endif
 }
 
 
 bool SIMpad::suspend() // Must override because SIMpad does NOT have apm
 {
-    qDebug( "ODevice for SIMpad: suspend()" );
     if ( !isQWS( ) ) // only qwsserver is allowed to suspend
         return false;
 
-    /*
-     * we need to save the screen content
-     * then go to suspend using ODevice::suspend
-     * and finally restore the screen content
-     */
-    (void)::system( "cat /dev/fb/0 > /tmp/.buffer" );
     bool res  = ODevice::suspend();
 
     /*
-     * restore
+     * restore the screen content if we really
+     * supended the device
      */
     if ( res )
-        ::system( "cat /tmp/.buffer > /dev/fb/0" );
+        updateAllWidgets();
 
     return res;
 }
 
 bool SIMpad::setDisplayStatus ( bool on )
 {
     qDebug( "ODevice for SIMpad: setDisplayStatus(%s)", on? "on" : "off" );
 
     return setCS3Bit(on, SIMPAD_DISPLAY_ON);
 }
 
 
@@ -360,12 +355,29 @@ bool SIMpad::setDisplayBrightness ( int bright )
         res = ( ::write(fd, str, str.length()) != -1 );
         ::close ( fd );
     }
     return res;
 }
 
 
 int SIMpad::displayBrightnessResolution() const
 {
     return 255; // All SIMpad models share the same display
 }
 
+
+/*
+ * The MQ200 DRAM content is lost during suspend
+ * so we will just repaint every widget on resume
+ */
+void SIMpad::updateAllWidgets() {
+    QWidgetList *list = QApplication::allWidgets();
+    QWidgetListIt it( *list );
+    QWidget *wid;
+
+    while ((wid=it.current()) != 0 ) {
+        wid->update();
+        ++it;
+    }
+
+    delete list;
+}
diff --git a/libopie2/opiecore/device/odevice_simpad.h b/libopie2/opiecore/device/odevice_simpad.h
index dbcbbb4..c25b911 100644
--- a/libopie2/opiecore/device/odevice_simpad.h
+++ b/libopie2/opiecore/device/odevice_simpad.h
@@ -56,24 +56,26 @@ class SIMpad : public ODevice
 
     virtual QValueList <OLed> ledList() const;
     virtual QValueList <OLedState> ledStateList( OLed led ) const;
     virtual OLedState ledState( OLed led ) const;
     virtual bool setLedState( OLed led, OLedState st );
 
 protected:
     virtual void timerEvent( QTimerEvent *te );
 
     int m_power_timer;
 
     OLedState m_leds [2];
+private:
+    static void updateAllWidgets();
 };
 
 struct s_button {
     uint model;
     Qt::Key code;
     char *utext;
     char *pix;
     char *fpressedservice;
     char *fpressedaction;
     char *fheldservice;
     char *fheldaction;
 };