StartAnimation() public static méthode

Starts an animation to a particular value on the specified dependency property.
public static StartAnimation ( UIElement animatableElement, DependencyProperty dependencyProperty, double toValue, double animationDurationSeconds ) : void
animatableElement System.Windows.UIElement
dependencyProperty System.Windows.DependencyProperty
toValue double
animationDurationSeconds double
Résultat void
AnimationHelper Class Documentation
Exemple #1
0
        /// <summary>
        /// Zoom in/out centered on the specified point (in content coordinates).
        /// The focus point is kept locked to it's on screen position (ala google maps).
        /// </summary>
        public void AnimatedZoomAboutPoint(double newContentScale, Point contentZoomFocus)
        {
            newContentScale = Math.Min(Math.Max(newContentScale, MinContentScale), MaxContentScale);

            AnimationHelper.CancelAnimation(this, ContentZoomFocusXProperty);
            AnimationHelper.CancelAnimation(this, ContentZoomFocusYProperty);
            AnimationHelper.CancelAnimation(this, ViewportZoomFocusXProperty);
            AnimationHelper.CancelAnimation(this, ViewportZoomFocusYProperty);

            ContentZoomFocusX  = contentZoomFocus.X;
            ContentZoomFocusY  = contentZoomFocus.Y;
            ViewportZoomFocusX = (ContentZoomFocusX - ContentOffsetX) * ContentScale;
            ViewportZoomFocusY = (ContentZoomFocusY - ContentOffsetY) * ContentScale;

            //
            // When zooming about a point make updates to ContentScale also update content offset.
            //
            enableContentOffsetUpdateFromScale = true;

            AnimationHelper.StartAnimation(this, ContentScaleProperty, newContentScale, AnimationDuration,
                                           delegate(object sender, EventArgs e)
            {
                enableContentOffsetUpdateFromScale = false;

                ResetViewportZoomFocus();
            });
        }
Exemple #2
0
        /// <summary>
        /// Zoom to the specified scale and move the specified focus point to the center of the viewport.
        /// </summary>
        private void AnimatedZoomPointToViewportCenter(double newContentScale, Point contentZoomFocus, EventHandler callback)
        {
            newContentScale = Math.Min(Math.Max(newContentScale, MinContentScale), MaxContentScale);

            AnimationHelper.CancelAnimation(this, ContentZoomFocusXProperty);
            AnimationHelper.CancelAnimation(this, ContentZoomFocusYProperty);
            AnimationHelper.CancelAnimation(this, ViewportZoomFocusXProperty);
            AnimationHelper.CancelAnimation(this, ViewportZoomFocusYProperty);

            ContentZoomFocusX  = contentZoomFocus.X;
            ContentZoomFocusY  = contentZoomFocus.Y;
            ViewportZoomFocusX = (ContentZoomFocusX - ContentOffsetX) * ContentScale;
            ViewportZoomFocusY = (ContentZoomFocusY - ContentOffsetY) * ContentScale;

            //
            // When zooming about a point make updates to ContentScale also update content offset.
            //
            enableContentOffsetUpdateFromScale = true;

            AnimationHelper.StartAnimation(this, ContentScaleProperty, newContentScale, AnimationDuration,
                                           delegate(object sender, EventArgs e)
            {
                enableContentOffsetUpdateFromScale = false;

                if (callback != null)
                {
                    callback(this, EventArgs.Empty);
                }
            });

            AnimationHelper.StartAnimation(this, ViewportZoomFocusXProperty, ViewportWidth / 2, AnimationDuration);
            AnimationHelper.StartAnimation(this, ViewportZoomFocusYProperty, ViewportHeight / 2, AnimationDuration);
        }
Exemple #3
0
        /// <summary>
        /// Use animation to center the view on the specified point (in content coordinates).
        /// </summary>
        public void AnimatedSnapTo(Point contentPoint)
        {
            double newX = contentPoint.X - (this.ContentViewportWidth / 2);
            double newY = contentPoint.Y - (this.ContentViewportHeight / 2);

            AnimationHelper.StartAnimation(this, ContentOffsetXProperty, newX, AnimationDuration);
            AnimationHelper.StartAnimation(this, ContentOffsetYProperty, newY, AnimationDuration);
        }
Exemple #4
0
        //
        // Fade out the drag zoom rectangle.
        //
        private void FadeOutDragZoomRect()
        {
#if !SILVERLIGHT
            AnimationHelper.StartAnimation(dragZoomBorder, Border.OpacityProperty, 0.0, 0.1,
                                           delegate(object sender, EventArgs e)
            {
                dragZoomCanvas.Visibility = Visibility.Collapsed;
            });
#else
            dragZoomCanvas.Visibility = Visibility.Collapsed;
#endif
        }
Exemple #5
0
 //
 // Fade out the drag zoom rectangle.
 //
 private void FadeOutDragZoomRect()
 {
     AnimationHelper.StartAnimation(_partDragZoomBorder, OpacityProperty, 0.0, 0.1,
                                    delegate { _partDragZoomCanvas.Visibility = Visibility.Collapsed; }, UseAnimations);
 }