From cb687974f9e97c0ce6117b0ac4551ad4d4342b6a Mon Sep 17 00:00:00 2001
From: sandman <sandman>
Date: Mon, 28 Oct 2002 04:48:35 +0000
Subject: - moved the QPEScreenSaver to screensaver.cpp/.h and renamed the class to

  OpieScreenSaver
- (hopefully) fixed all outstanding bugs regarding the new on batt/on ac
  handling
- first (primitive) version of light sensor control (but it works)
---
(limited to 'core/launcher/screensaver.cpp')

diff --git a/core/launcher/screensaver.cpp b/core/launcher/screensaver.cpp
new file mode 100644
index 0000000..9e823ff
--- a/dev/null
+++ b/core/launcher/screensaver.cpp
@@ -0,0 +1,237 @@
+
+#include "screensaver.h"
+
+#include <qpe/config.h>
+#include <qpe/power.h>
+#include <qpe/network.h>
+
+#include <opie/odevice.h>
+
+
+using namespace Opie;
+
+
+OpieScreenSaver::OpieScreenSaver ( )
+		: QObject ( 0, "screensaver" ), QWSScreenSaver ( )
+{
+	m_disable_suspend = 100;
+	m_enable_dim = false;
+	m_enable_lightoff = false;
+	m_enable_suspend = false;
+	m_onlylcdoff = false;
+
+	m_enable_dim_ac = false;
+	m_enable_lightoff_ac = false;
+	m_enable_suspend_ac = false;
+	m_onlylcdoff_ac = false;
+
+	m_use_light_sensor = false;
+	m_backlight_sensor = -1;
+
+	m_lcd_status = true;
+
+	m_backlight_normal = -1;
+	m_backlight_current = -1;
+	m_backlight_forcedoff = false;
+
+	m_on_ac = false;
+
+	m_level = -1;
+
+	// Make sure the LCD is in fact on, (if opie was killed while the LCD is off it would still be off)
+	ODevice::inst ( )-> setDisplayStatus ( true );
+	setBacklight ( -1 );
+}
+
+
+void OpieScreenSaver::restore()
+{
+	m_level = -1;
+
+	if ( !m_lcd_status ) {    // We must have turned it off
+		ODevice::inst ( ) -> setDisplayStatus ( true );
+		m_lcd_status = true;
+	}
+
+	setBacklightInternal ( -1 );
+}
+
+
+bool OpieScreenSaver::save( int level )
+{
+	m_level = level;
+
+	switch ( level ) {
+		case 0:
+			if (( m_on_ac && m_enable_dim_ac ) ||
+			        ( !m_on_ac && m_enable_dim )) {
+				if (( m_disable_suspend > 0 ) && ( m_backlight_current > 1 ) && !m_use_light_sensor )
+					setBacklightInternal ( 1 ); // lowest non-off
+			}
+			return true;
+			break;
+
+		case 1:
+			if (( m_on_ac && m_enable_lightoff_ac ) ||
+			        ( !m_on_ac && m_enable_lightoff )) {
+				if ( m_disable_suspend > 1 )
+					setBacklightInternal ( 0 ); // off
+			}
+			return true;
+			break;
+
+		case 2:
+			if (( m_on_ac && !m_enable_suspend_ac ) ||
+			        ( !m_on_ac && !m_enable_suspend )) {
+				return true;
+			}
+
+			if (( m_on_ac && m_onlylcdoff_ac ) ||
+			        ( !m_on_ac && m_onlylcdoff )) {
+				ODevice::inst ( ) -> setDisplayStatus ( false );
+				m_lcd_status = false;
+				return true;
+			}
+
+			// We're going to suspend the whole machine
+
+			if (( m_disable_suspend > 2 ) && !Network::networkOnline ( )) {
+				QWSServer::sendKeyEvent( 0xffff, Qt::Key_F34, FALSE, TRUE, FALSE );
+				return true;
+			}
+
+			break;
+	}
+	return false;
+}
+
+
+void OpieScreenSaver::setIntervals ( int i1, int i2, int i3 )
+{
+	Config config ( "apm" );
+	config. setGroup ( m_on_ac ? "AC" : "Battery" );
+
+	int v[ 4 ];
+	if ( i1 < 0 )
+		i1 = config. readNumEntry ( "Dim", 30 );
+	if ( i2 < 0 )
+		i2 = config. readNumEntry ( "LightOff", 20 );
+	if ( i3 < 0 )
+		i3 = config. readNumEntry ( "Suspend", 60 );
+
+	if ( m_on_ac ) {
+		m_enable_dim_ac = ( i1 > 0 );
+		m_enable_lightoff_ac = ( i2 > 0 );
+		m_enable_suspend_ac = ( i3 > 0 );
+		m_onlylcdoff_ac = config.readNumEntry ( "LcdOffOnly", 0 );
+	}
+	else {
+		m_enable_dim = ( i1 > 0 );
+		m_enable_lightoff = ( i2 > 0 );
+		m_enable_suspend = ( i3 > 0 );
+		m_onlylcdoff = config.readNumEntry ( "LcdOffOnly", 0 );
+	}
+	
+	qDebug("screen saver intervals: %d %d %d", i1, i2, i3);
+
+	v [ 0 ] = QMAX( 1000 * i1, 100 );
+	v [ 1 ] = QMAX( 1000 * i2, 100 );
+	v [ 2 ] = QMAX( 1000 * i3, 100 );
+	v [ 3 ] = 0;
+
+	if ( !i1 && !i2 && !i3 )
+		QWSServer::setScreenSaverInterval( 0 );
+	else
+		QWSServer::setScreenSaverIntervals( v );
+}
+
+
+void OpieScreenSaver::setInterval ( int interval )
+{
+	setIntervals ( -1, -1, interval );
+}
+
+
+void OpieScreenSaver::setMode ( int mode )
+{
+	if ( mode > m_disable_suspend )
+		setInterval ( -1 );
+	m_disable_suspend = mode;
+}
+
+
+void OpieScreenSaver::setBacklight ( int bright )
+{
+	// Read from config
+	Config config ( "apm" );
+	config. setGroup ( m_on_ac ? "AC" : "Battery" );
+	m_backlight_normal = config. readNumEntry ( "Brightness", 255 );
+
+	m_use_light_sensor = config. readBoolEntry ( "LightSensor", false );
+
+	qDebug ( "setBacklight: %d (ls: %d)", m_backlight_normal, m_use_light_sensor ? 1 : 0 );
+
+	killTimers ( );
+	if ( m_use_light_sensor ) {
+		timerEvent ( 0 );
+		startTimer ( 2000 );
+	}
+
+	setBacklightInternal ( bright );
+}
+
+
+void OpieScreenSaver::setBacklightInternal ( int bright )
+{
+	if ( bright == -3 ) {
+		// Forced on
+		m_backlight_forcedoff = false;
+		bright = -1;
+	}
+	if ( m_backlight_forcedoff && bright != -2 )
+		return ;
+	if ( bright == -2 ) {
+		// Toggle between off and on
+		bright = m_backlight_current ? 0 : -1;
+		m_backlight_forcedoff = !bright;
+	}
+	if ( bright == -1 )
+		bright = m_use_light_sensor ? m_backlight_sensor : m_backlight_normal;
+
+	if ( bright != m_backlight_current ) {
+		ODevice::inst ( )-> setDisplayBrightness ( bright );
+		m_backlight_current = bright;
+	}
+}
+
+
+void OpieScreenSaver::timerEvent ( QTimerEvent * )
+{
+	m_backlight_sensor = (( 255 - ODevice::inst ( )-> readLightSensor ( )) * m_backlight_normal ) / 255;
+
+	if ( m_level <= 0 )
+		setBacklightInternal ( -1 );
+}
+
+
+void OpieScreenSaver::setDisplayState ( bool on )
+{
+	if ( m_lcd_status != on ) {
+		ODevice::inst ( ) -> setDisplayStatus ( on );
+		m_lcd_status = on;
+	}
+}
+
+
+void OpieScreenSaver::powerStatusChanged ( PowerStatus ps )
+{
+	bool newonac = ( ps. acStatus ( ) == PowerStatus::Online );
+	
+	if ( newonac != m_on_ac ) {
+		m_on_ac = newonac;
+		setInterval ( -1 );
+		setBacklight ( -1 );
+		restore ( );		
+	}
+}
+
--
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