1 files changed, 27 insertions, 40 deletions

diff --git a/indra/llui/llbutton.cpp b/indra/llui/llbutton.cpp
index f82cdc64a9..a8149a9a1d 100644
--- a/indra/llui/llbutton.cpp
+++ b/indra/llui/llbutton.cpp
@@ -613,30 +613,6 @@ void LLButton::draw()
 	static LLCachedControl<bool> sEnableButtonFlashing(*LLUI::sSettingGroups["config"], "EnableButtonFlashing", true);
 	F32 alpha = mUseDrawContextAlpha ? getDrawContext().mAlpha : getCurrentTransparency();
 
-	bool flash = false;
-	if (mFlashingTimer)
-	{
-		mFlashing = mFlashingTimer->isFlashingInProgress();
-		flash = mFlashing && (!sEnableButtonFlashing || mFlashingTimer->isCurrentlyHighlighted());
-	}
-	else 
-	{
-		if(mFlashing)
-		{
-			if ( sEnableButtonFlashing)
-			{
-				F32 elapsed = mFrameTimer.getElapsedTimeF32();
-				S32 flash_count = S32(elapsed * mButtonFlashRate * 2.f);
-				// flash on or off?
-				flash = (flash_count % 2 == 0) || flash_count > S32((F32)mButtonFlashCount * 2.f);
-			}
-			else
-			{ // otherwise just highlight button in flash color
-				flash = true;
-			}
-		}
-	}
-
 	bool pressed_by_keyboard = FALSE;
 	if (hasFocus())
 	{
@@ -660,9 +636,21 @@ void LLButton::draw()
 	bool selected = getToggleState();
 	
 	bool use_glow_effect = FALSE;
-	LLColor4 glow_color = LLColor4::white;
+	LLColor4 highlighting_color = LLColor4::white;
+	LLColor4 glow_color;
 	LLRender::eBlendType glow_type = LLRender::BT_ADD_WITH_ALPHA;
 	LLUIImage* imagep = NULL;
+
+    //  Cancel sticking of color, if the button is pressed,
+	//  or when a flashing of the previously selected button is ended
+	if (mFlashingTimer
+		&& ((selected && !mFlashingTimer->isFlashingInProgress()) || pressed))
+	{
+		mFlashing = false;
+	}
+
+	bool flash = mFlashing && sEnableButtonFlashing;
+
 	if (pressed && mDisplayPressedState)
 	{
 		imagep = selected ? mImagePressedSelected : mImagePressed;
@@ -728,15 +716,20 @@ void LLButton::draw()
 			imagep = mImageFlash;
 		}
 		// else use usual flashing via flash_color
-		else
+		else if (mFlashingTimer)
 		{
 			LLColor4 flash_color = mFlashBgColor.get();
 			use_glow_effect = TRUE;
 			glow_type = LLRender::BT_ALPHA; // blend the glow
-			if (mNeedsHighlight) // highlighted AND flashing
-				glow_color = (glow_color*0.5f + flash_color*0.5f) % 2.0f; // average between flash and highlight colour, with sum of the opacity
-			else
+
+			if (mFlashingTimer->isCurrentlyHighlighted() || !mFlashingTimer->isFlashingInProgress())
+			{
 				glow_color = flash_color;
+			}
+			else if (mNeedsHighlight)
+			{
+                glow_color = highlighting_color;
+			}
 		}
 	}
 
@@ -785,8 +778,7 @@ void LLButton::draw()
 	if (use_glow_effect)
 	{
 		mCurGlowStrength = lerp(mCurGlowStrength,
-					mFlashing ? (flash? 1.0 : 0.0)
-					: mHoverGlowStrength,
+					mFlashing ? (mFlashingTimer->isCurrentlyHighlighted() || !mFlashingTimer->isFlashingInProgress() || mNeedsHighlight? 1.0 : 0.0) : mHoverGlowStrength,
 					LLCriticalDamp::getInterpolant(0.05f));
 	}
 	else
@@ -973,23 +965,18 @@ void LLButton::setToggleState(BOOL b)
 	{
 		setControlValue(b); // will fire LLControlVariable callbacks (if any)
 		setValue(b);        // may or may not be redundant
+		setFlashing(false);	// stop flash state whenever the selected/unselected state if reset
 		// Unselected label assignments
 		autoResize();
 	}
 }
 
-void LLButton::setFlashing( bool b )	
+void LLButton::setFlashing(bool b)	
 { 
 	if (mFlashingTimer)
 	{
-		if (b)
-		{
-			mFlashingTimer->startFlashing();
-		}
-		else
-		{
-			mFlashingTimer->stopFlashing();
-		}
+		mFlashing = b; 
+		(b ? mFlashingTimer->startFlashing() : mFlashingTimer->stopFlashing());
 	}
 	else if (b != mFlashing)
 	{