New class to handle osd fade

git-svn-id: file:///home/bas/coolstream_public_svn/THIRDPARTY/applications/neutrino-beta@1940 e54a6e83-5905-42d5-8d5c-058d10e6a962

src/driver/Makefile.am

@@ -35,6 +35,7 @@ libneutrino_driver_a_SOURCES = \
 	rfmod.cpp \
 	radiotools.cpp \
 	radiotext.cpp \
+	fade.cpp \
 	ringbuffer.c
 
 if BOXTYPE_COOL

src/driver/fade.cpp

@@ -0,0 +1,107 @@
+/*
+	Neutrino-GUI  -   DBoxII-Project
+
+	Copyright (C) 2011 CoolStream International Ltd
+
+	License: GPLv2
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to the Free Software
+	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <global.h>
+#include <driver/rcinput.h>
+#include <driver/fade.h>
+
+COSDFader::COSDFader(unsigned char & alpha)
+	: max_alpha(alpha)
+{
+	frameBuffer = CFrameBuffer::getInstance();
+	fadeTimer = 0;
+	fadeIn = false;
+	fadeOut = false;
+}
+
+COSDFader::~COSDFader()
+{
+	Stop();
+}
+
+void COSDFader::StartFadeIn()
+{
+	if(!g_settings.widget_fade)
+		return;
+
+	fadeIn = true;
+	fadeOut = false;
+	fadeValue = 100;
+	frameBuffer->setBlendMode(2); // Global alpha multiplied with pixel alpha
+	frameBuffer->setBlendLevel(fadeValue, fadeValue);
+	fadeTimer = g_RCInput->addTimer( FADE_TIME, false );
+}
+
+/* return true if fade out started */
+bool COSDFader::StartFadeOut()
+{
+	bool ret = false;
+	if ( fadeIn ) {
+		g_RCInput->killTimer(fadeTimer);
+		fadeIn = false;
+	}
+	if ((!fadeOut) && g_settings.widget_fade) {
+		fadeOut = true;
+		fadeTimer = g_RCInput->addTimer( FADE_TIME, false );
+		frameBuffer->setBlendMode(2); // Global alpha multiplied with pixel alpha
+		ret = true;
+	}
+	return ret;
+}
+
+void COSDFader::Stop()
+{
+	if ( fadeIn || fadeOut ) {
+		g_RCInput->killTimer(fadeTimer);
+		frameBuffer->setBlendMode(1); // Set back to per pixel alpha
+		fadeIn = fadeOut = false;
+	}
+}
+
+/* return true, if fade out done */
+bool COSDFader::Fade()
+{
+	bool ret = false;
+
+	if (fadeOut) { // disappear
+		fadeValue += FADE_STEP;
+		if (fadeValue >= 100) {
+			fadeValue = max_alpha;
+			g_RCInput->killTimer (fadeTimer);
+			ret = true;
+		} else
+			frameBuffer->setBlendLevel(fadeValue, fadeValue);
+	} else { // appears
+		fadeValue -= FADE_STEP;
+		if (fadeValue <= max_alpha) {
+			fadeValue = max_alpha;
+			g_RCInput->killTimer (fadeTimer);
+			fadeIn = false;
+			frameBuffer->setBlendMode(1); // Set back to per pixel alpha
+		} else
+			frameBuffer->setBlendLevel(fadeValue, fadeValue);
+	}
+	return ret;
+}

src/driver/fade.h

@@ -0,0 +1,47 @@
+/*
+	Neutrino-GUI  -   DBoxII-Project
+
+	Copyright (C) 2011 CoolStream International Ltd
+
+	License: GPLv2
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to the Free Software
+	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef __fade_f__
+#define __fade_f__
+
+#include <driver/framebuffer.h>
+
+class COSDFader
+{
+	private:
+		uint32_t	fadeTimer;
+		int		fadeValue;
+		unsigned char	& max_alpha;
+		bool		fadeIn;
+		bool		fadeOut;
+
+		CFrameBuffer            *frameBuffer;
+	public:
+		COSDFader(unsigned char &alpha);
+		~COSDFader();
+
+		void StartFadeIn();
+		bool StartFadeOut();
+		void Stop();
+		bool Fade();
+		uint32_t GetTimer() { return fadeTimer; };
+};
+#endif