From 672590cd3bab47cb0d9d97eeb45f523dd5eb65d1 Mon Sep 17 00:00:00 2001
From: RKrom <robin@getgreenshot.org>
Date: Mon, 3 Dec 2012 14:08:06 +0000
Subject: [PATCH] Changes for the animation after discussions with Thomas.
 Mainly that the animation of the interactive capture STARTS from the
 Mouse-Cursor outwards.

git-svn-id: http://svn.code.sf.net/p/greenshot/code/trunk@2348 7dccd23d-a4a3-4e1f-8c07-b4c1b4018ab4
---
 Greenshot/Forms/CaptureForm.cs       | 18 ++++++----
 Greenshot/Helpers/AnimationHelper.cs | 53 +++++++++++++++++-----------
 2 files changed, 45 insertions(+), 26 deletions(-)

diff --git a/Greenshot/Forms/CaptureForm.cs b/Greenshot/Forms/CaptureForm.cs
index bde9643d3..fefba1978 100644
--- a/Greenshot/Forms/CaptureForm.cs
+++ b/Greenshot/Forms/CaptureForm.cs
@@ -448,7 +448,7 @@ namespace Greenshot.Forms {
 				if (captureMode == CaptureMode.Window) {
 					// Using a 50 Pixel offset to the left, top, to make sure the text is invalidated too
 					const int SAFETY_SIZE = 25;
-					if (windowAnimator.hasNext) {
+					if (windowAnimator != null && windowAnimator.hasNext) {
 						Rectangle invalidateRectangle = windowAnimator.Current;
 						invalidateRectangle.Inflate(SAFETY_SIZE, SAFETY_SIZE);
 						Invalidate(invalidateRectangle);
@@ -458,7 +458,11 @@ namespace Greenshot.Forms {
 					}
 					if (selectedCaptureWindow != null && !selectedCaptureWindow.Equals(lastWindow)) {
 						// Window changes, make new animation from current to target
-						windowAnimator.ChangeDestination(captureRect, 14);
+						if (windowAnimator.Last.Size == Size.Empty) {
+							windowAnimator = new RectangleAnimator(new Rectangle(cursorPos, Size.Empty), captureRect, 10, EasingType.Quintic, EasingMode.EaseOut);
+						} else {
+							windowAnimator.ChangeDestination(captureRect, 10);
+						}
 						Rectangle invalidateRectangle = new Rectangle(lastCaptureRect.Location, lastCaptureRect.Size);
 						invalidateRectangle.Inflate(SAFETY_SIZE, SAFETY_SIZE);
 						Invalidate(invalidateRectangle);
@@ -517,8 +521,8 @@ namespace Greenshot.Forms {
 			// convert to be relative to top left corner of all screen bounds
 			screenBounds.Location = WindowCapture.GetLocationRelativeToScreenBounds(screenBounds.Location);
 
-			
-			Rectangle targetRectangle = zoomAnimator.Last;
+
+			Rectangle targetRectangle = zoomAnimator.Final;
 			targetRectangle.Offset(pos);
 			if (screenBounds.Contains(targetRectangle)) {
 				// All okay
@@ -538,8 +542,10 @@ namespace Greenshot.Forms {
 				} else {
 					destinationLocation = new Point(-zoomOffset.X - zoomSize.Width, -zoomOffset.Y - zoomSize.Width);
 				}
-				zoomAnimator.ChangeDestination(new Rectangle(new Point(-10, -10), new Size(20, 20)));
-				zoomAnimator.QueueDestination(new Rectangle(destinationLocation, zoomSize));
+				// Change animation to destination "small with the mouse-cursor at the center"
+				//zoomAnimator.ChangeDestination(new Rectangle(new Point(-10, -10), new Size(20, 20)));
+				//zoomAnimator.QueueDestinationLeg(new Rectangle(destinationLocation, zoomSize));
+				zoomAnimator.ChangeDestination(new Rectangle(destinationLocation, zoomSize));
 				ret = zoomAnimator.Next();
 			}
 			return ret;
diff --git a/Greenshot/Helpers/AnimationHelper.cs b/Greenshot/Helpers/AnimationHelper.cs
index 320e20df1..3335283ac 100644
--- a/Greenshot/Helpers/AnimationHelper.cs
+++ b/Greenshot/Helpers/AnimationHelper.cs
@@ -36,7 +36,24 @@ namespace Greenshot.Helpers {
 		protected Queue<T> queue = new Queue<T>();
 		protected double frames;
 		protected double currentFrame = 0;
-		
+
+		/// <summary>
+		/// Constructor
+		/// </summary>
+		/// <param name="first"></param>
+		/// <param name="last"></param>
+		/// <param name="frames"></param>
+		/// <param name="easingType"></param>
+		/// <param name="easingMode"></param>
+		public AnimatorBase(T first, T last, int frames, EasingType easingType, EasingMode easingMode) {
+			this.first = first;
+			this.last = last;
+			this.frames = frames;
+			this.current = first;
+			this.EasingType = easingType;
+			this.EasingMode = easingMode;
+		}
+
 		/// <summary>
 		/// The amount of frames
 		/// </summary>
@@ -59,11 +76,23 @@ namespace Greenshot.Helpers {
 		}
 		
 		/// <summary>
-		/// Last animation value
+		/// Last animation value, of this "leg"
 		/// </summary>
 		public T Last {
 			get { return last; }
 		}
+
+		/// <summary>
+		/// Final animation value, this is including the legs
+		/// </summary>
+		public T Final {
+			get {
+				if (queue.Count == 0) {
+					return last;
+				}
+				return queue.ToArray()[queue.Count - 1];
+			}
+		}
 		
 		/// <summary>
 		/// This restarts the current animation and changes the last frame
@@ -83,13 +112,14 @@ namespace Greenshot.Helpers {
 			this.currentFrame = 0;
 			this.frames = frames;
 			this.last = newDestination;
+			queue.Clear();
 		}
 
 		/// <summary>
 		/// Queue the destination, it will be used after the current animation is finished
 		/// </summary>
 		/// <param name="queuedDestination"></param>
-		public void QueueDestination(T queuedDestination) {
+		public void QueueDestinationLeg(T queuedDestination) {
 			queue.Enqueue(queuedDestination);
 		}
 
@@ -126,23 +156,6 @@ namespace Greenshot.Helpers {
 			}
 		}
 
-		/// <summary>
-		/// Constructor
-		/// </summary>
-		/// <param name="first"></param>
-		/// <param name="last"></param>
-		/// <param name="frames"></param>
-		/// <param name="easingType"></param>
-		/// <param name="easingMode"></param>
-		public AnimatorBase(T first, T last, int frames, EasingType easingType, EasingMode easingMode) {
-			this.first = first;
-			this.last = last;
-			this.frames = frames;
-			this.current = first;
-			this.EasingType = easingType;
-			this.EasingMode = easingMode;
-		}
-
 		/// <summary>
 		/// Get the current (previous) frame object
 		/// </summary>