From 9a32cdcc577adb854fb008310a25184abf88ddec Mon Sep 17 00:00:00 2001
From: zebastian <jenzebas@gmail.com>
Date: Mon, 30 May 2016 18:19:25 +0200
Subject: [PATCH] notification for keyframe/flight folder does not exist

when the user presses the button to render keyframe/flight an error
notification will be shown, if the folder to store does not exist.
This fixes issue #93
---
 mandelbulber2/src/animation_flight.cpp    | 20 +++++++++++++++-----
 mandelbulber2/src/animation_keyframes.cpp | 20 +++++++++++++++-----
 2 files changed, 30 insertions(+), 10 deletions(-)

diff --git a/mandelbulber2/src/animation_flight.cpp b/mandelbulber2/src/animation_flight.cpp
index 7d005c6f0..f76da6c47 100644
--- a/mandelbulber2/src/animation_flight.cpp
+++ b/mandelbulber2/src/animation_flight.cpp
@@ -173,18 +173,28 @@ void cFlightAnimation::slotContinueRecording()
 
 void cFlightAnimation::slotRenderFlight()
 {
+	//get latest values of all parameters
+	mainInterface->SynchronizeInterface(params, fractalParams, qInterface::read);
+
 	if (frames)
 	{
-		if (frames->GetNumberOfFrames() > 0)
-		{
-			RenderFlight(&gMainInterface->stopRequest);
-		}
-		else
+		if (frames->GetNumberOfFrames() == 0)
 		{
 			emit showErrorMessage(QObject::tr("No frames to render"),
 														cErrorMessage::errorMessage,
 														ui->centralwidget);
 		}
+		else if (!QDir(params->Get<QString>("anim_flight_dir")).exists())
+		{
+			emit showErrorMessage(
+				QObject::tr("The folder %1 does not exist. Please specify a valid location.")
+						.arg(params->Get<QString>("anim_flight_dir")),
+				cErrorMessage::errorMessage, ui->centralwidget);
+		}
+		else
+		{
+			RenderFlight(&gMainInterface->stopRequest);
+		}
 
 	}
 	else
diff --git a/mandelbulber2/src/animation_keyframes.cpp b/mandelbulber2/src/animation_keyframes.cpp
index 1a7f4b63a..5884773a0 100644
--- a/mandelbulber2/src/animation_keyframes.cpp
+++ b/mandelbulber2/src/animation_keyframes.cpp
@@ -250,18 +250,28 @@ void cKeyframeAnimation::slotDeleteKeyframe()
 
 void cKeyframeAnimation::slotRenderKeyframes()
 {
+	//get latest values of all parameters
+	mainInterface->SynchronizeInterface(params, fractalParams, qInterface::read);
+
 	if (keyframes)
 	{
-		if (keyframes->GetNumberOfFrames() > 0)
-		{
-			RenderKeyframes(&gMainInterface->stopRequest);
-		}
-		else
+		if (keyframes->GetNumberOfFrames() == 0)
 		{
 			emit showErrorMessage(QObject::tr("No frames to render"),
 														cErrorMessage::errorMessage,
 														ui->centralwidget);
 		}
+		else if (!QDir(params->Get<QString>("anim_keyframe_dir")).exists())
+		{
+			emit showErrorMessage(
+				QObject::tr("The folder %1 does not exist. Please specify a valid location.")
+						.arg(params->Get<QString>("anim_keyframe_dir")),
+				cErrorMessage::errorMessage, ui->centralwidget);
+		}
+		else
+		{
+			RenderKeyframes(&gMainInterface->stopRequest);
+		}
 
 	}
 	else