From 3c70b34ae35cd22d6b7424e4f8523a2c6a1a62e5 Mon Sep 17 00:00:00 2001
From: Michele Calgaro <michele.calgaro@yahoo.it>
Date: Tue, 5 May 2020 21:57:03 +0900
Subject: KMilo: added keyboard support for screen brightness up/down. This is
 inspired and partially include code from Roman Savochenko proposed in bug
 2783 and tdeutils #8.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
---
 kmilo/generic/generic_monitor.cpp | 56 ++++++++++++++++++++++++++++++++++-----
 kmilo/generic/generic_monitor.h   |  5 +++-
 2 files changed, 53 insertions(+), 8 deletions(-)

diff --git a/kmilo/generic/generic_monitor.cpp b/kmilo/generic/generic_monitor.cpp
index 28138ec..9017f70 100644
--- a/kmilo/generic/generic_monitor.cpp
+++ b/kmilo/generic/generic_monitor.cpp
@@ -43,7 +43,7 @@
 using namespace KMilo;
 
 GenericMonitor::GenericMonitor(TQObject *parent, const char *name, const TQStringList& args)
-: Monitor(parent, name, args)
+: Monitor(parent, name, args), kmixClient(NULL), kmixWindow(NULL), tdepowersave(NULL)
 {
 	_poll = false;
 	m_displayType = Monitor::None;
@@ -69,11 +69,8 @@ GenericMonitor::~GenericMonitor()
 
 bool GenericMonitor::init()
 {
-	TDEConfig config(CONFIG_FILE);
-	reconfigure(&config);
-
-	//config = new TDEConfig("kmilodrc");
-	config.setGroup("kubuntu");
+	config = new TDEConfig(CONFIG_FILE);
+	reconfigure(config);
 
 	if(!m_enabled)
 		return false; // exit early if we are not supposed to run
@@ -95,7 +92,9 @@ bool GenericMonitor::init()
 		{ "FastVolumeDown", TQt::Key_VolumeDown, TQT_SLOT(fastVolumeDown()) },
 		{ "SlowVolumeUp", TQt::CTRL+TQt::Key_VolumeUp, TQT_SLOT(slowVolumeUp()) },
 		{ "SlowVolumeDown", TQt::CTRL+TQt::Key_VolumeDown, TQT_SLOT(slowVolumeDown()) },
-		{ "Mute", TDEShortcut("XF86AudioMute"), TQT_SLOT(mute()) }
+		{ "Mute", TDEShortcut("XF86AudioMute"), TQT_SLOT(mute()) },
+		{ "BrightnessUp", TDEShortcut("XF86MonBrightnessUp"), TQT_SLOT(brightnessUp()) },
+		{ "BrightnessDown", TDEShortcut("XF86MonBrightnessDown"), TQT_SLOT(brightnessDown()) }
 	};
 
 	ga = new TDEGlobalAccel(this, "miloGenericAccel");
@@ -116,6 +115,7 @@ bool GenericMonitor::init()
 
 	kmixClient = new DCOPRef("kmix", "Mixer0");
 	kmixWindow = new DCOPRef("kmix", "kmix-mainwindow#1");
+	tdepowersave = new DCOPRef("tdepowersave", "tdepowersaveIface");
 
 	return true;
 }
@@ -325,6 +325,48 @@ void GenericMonitor::mute()
 	_interface->displayText(muteText);
 }
 
+void GenericMonitor::brightnessUp()
+{
+	brightnessChange(1, 10);
+}
+
+void GenericMonitor::brightnessDown()
+{
+	brightnessChange(-1, 10);
+}
+
+void GenericMonitor::brightnessChange(int direction, int step)
+{
+	if (!tdepowersave)
+	{
+		return;
+	}
+
+	DCOPReply reply = tdepowersave->call("brightnessGet");
+	if (reply.isValid())
+	{
+		int brightnessLevel = 100 + (int)reply; // reply value is a negative number between 0 and -100.
+		brightnessLevel += direction * step; // add requested brightness step
+		if (brightnessLevel > 100)
+		{
+			brightnessLevel = 100;
+		}
+		if (brightnessLevel < 0)
+		{
+			brightnessLevel = 0;
+		}
+		if (direction > 0)
+		{
+			tdepowersave->send("do_brightnessUp", step);
+		}
+		else if (direction < 0)
+		{
+			tdepowersave->send("do_brightnessDown", step);
+		}
+		_interface->displayProgress(i18n("Brightness"), brightnessLevel);
+	}
+}
+
 int GenericMonitor::progress() const 
 {
 	return m_progress;
diff --git a/kmilo/generic/generic_monitor.h b/kmilo/generic/generic_monitor.h
index 44ff970..9305ac3 100644
--- a/kmilo/generic/generic_monitor.h
+++ b/kmilo/generic/generic_monitor.h
@@ -65,6 +65,8 @@ public slots:
   void fastVolumeUp();
   void fastVolumeDown();
   void mute();
+  void brightnessUp();
+  void brightnessDown();
   void launchMail();
   void launchBrowser();
   void launchSearch();
@@ -83,12 +85,13 @@ private:
 	bool retrieveMute();
 	bool retrieveVolume();
 	void displayVolume();
+	void brightnessChange(int direction, int step);
 	void launch(TQString configKey, TQString defaultApplication);
 
 	TDEGlobalAccel *ga;
 	TDEConfig* config;
 
-	DCOPRef *kmixClient, *kmixWindow;
+	DCOPRef *kmixClient, *kmixWindow, *tdepowersave;
 
 	int m_progress;
 	long m_volume;
-- 
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