From 123ca72f7a92d2529c6f9b6bdff3f13d6f0223c9 Mon Sep 17 00:00:00 2001
From: Daniel Karbach <daniel.karbach@localhorst.tv>
Date: Mon, 8 Oct 2012 22:07:50 +0200
Subject: [PATCH] added lead in/out time option for ColorFade

---
 src/graphics/ColorFade.cpp | 33 ++++++++++++++++++++++++++++-----
 src/graphics/ColorFade.h   |  8 ++++++++
 2 files changed, 36 insertions(+), 5 deletions(-)

diff --git a/src/graphics/ColorFade.cpp b/src/graphics/ColorFade.cpp
index 51fe973..e83edbb 100644
--- a/src/graphics/ColorFade.cpp
+++ b/src/graphics/ColorFade.cpp
@@ -21,14 +21,23 @@ ColorFade::ColorFade(State *slave, Uint32 color, int duration, bool in, bool int
 , blinds(0)
 , color(color)
 , duration(duration)
+, leadIn(0)
+, leadOut(0)
+, leadInDone(true)
+, fadeDone(false)
 , in(in)
 , interactive(interactive) {
 
 }
 
 void ColorFade::EnterState(Application &c, SDL_Surface *screen) {
-	timer = GraphicsTimers().StartCountdown(duration);
 	ctrl = &c;
+	if (leadIn > 0) {
+		timer = GraphicsTimers().StartCountdown(leadIn);
+	} else {
+		timer = GraphicsTimers().StartCountdown(duration);
+
+	}
 }
 
 void ColorFade::ExitState(Application &, SDL_Surface *screen) {
@@ -62,10 +71,12 @@ void ColorFade::UpdateBlinds(int width, int height) {
 }
 
 Uint8 ColorFade::GetAlpha() const {
-	if (in) {
-		return timer.Remaining() * 255 / duration;
+	if (!leadInDone) {
+		return in ? 255 : 0;
+	} else if (!fadeDone) {
+		return (in ? timer.Remaining() : timer.Elapsed()) * 255 / duration;
 	} else {
-		return timer.Elapsed() * 255 / duration;
+		return in ? 0 : 255;
 	}
 }
 
@@ -75,7 +86,19 @@ void ColorFade::HandleEvents(const Input &input) {
 		slave->HandleEvents(input);
 	}
 	if (timer.Finished()) {
-		ctrl->PopState();
+		if (!leadInDone) {
+			leadInDone = true;
+			timer = GraphicsTimers().StartCountdown(duration);
+		} else if (!fadeDone) {
+			fadeDone = true;
+			if (leadOut > 0) {
+				timer = GraphicsTimers().StartCountdown(leadOut);
+			} else {
+				ctrl->PopState();
+			}
+		} else {
+			ctrl->PopState();
+		}
 	}
 }
 
diff --git a/src/graphics/ColorFade.h b/src/graphics/ColorFade.h
index 66d8192..7226a00 100644
--- a/src/graphics/ColorFade.h
+++ b/src/graphics/ColorFade.h
@@ -22,6 +22,10 @@ public:
 	ColorFade(app::State *slave, Uint32 color, int duration, bool in = false, bool interactive = false);
 	virtual ~ColorFade() { }
 
+public:
+	void SetLeadInTime(int ms) { leadIn = ms; if (ms > 0) leadInDone = false; }
+	void SetLeadOutTime(int ms) { leadOut = ms; }
+
 public:
 	virtual void EnterState(app::Application &ctrl, SDL_Surface *screen);
 	virtual void ExitState(app::Application &ctrl, SDL_Surface *screen);
@@ -45,6 +49,10 @@ private:
 	SDL_Surface *blinds;
 	Uint32 color;
 	int duration;
+	int leadIn;
+	int leadOut;
+	bool leadInDone;
+	bool fadeDone;
 	bool in;
 	bool interactive;
 
-- 
2.39.2