markus / ZoomAndPan / ZoomAndPanControl_ScrollInfo.cs @ eaafc1eb
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using System.Windows; |
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using System.Windows.Controls; |
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using System.Windows.Controls.Primitives; |
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using System.Windows.Media; |
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namespace ZoomAndPan |
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{
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public partial class ZoomAndPanControl : IScrollInfo |
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{
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public ScrollViewer ScrollOwner |
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{
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get |
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{
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return scrollOwner; |
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} |
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set |
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{
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scrollOwner = value; |
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} |
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} |
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public double ViewportWidth |
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{
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get |
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{
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return viewport.Width; |
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} |
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} |
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public double ViewportHeight |
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{
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get |
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{
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return viewport.Height; |
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} |
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} |
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public bool CanHorizontallyScroll |
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{
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get { return canHorizontallyScroll; }
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set { canHorizontallyScroll = value; }
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} |
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public bool CanVerticallyScroll |
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{
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get { return canVerticallyScroll; }
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set { canVerticallyScroll = value; }
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} |
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public double ExtentHeight |
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{
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get |
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{
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return unScaledExtent.Height * ContentScale; |
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} |
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} |
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public double ExtentWidth |
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{
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get { return unScaledExtent.Width * ContentScale; }
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} |
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public double VerticalOffset |
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{
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get { return ContentOffsetY * ContentScale; }
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} |
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public double HorizontalOffset |
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{
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get { return ContentOffsetX * ContentScale; }
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} |
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public void LineDown() |
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{
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ContentOffsetY += (ContentViewportHeight / 10); |
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} |
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public void LineLeft() |
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{
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ContentOffsetX -= (ContentViewportWidth / 10); |
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} |
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public void LineRight() |
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{
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ContentOffsetX += (ContentViewportWidth / 10); |
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} |
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public void LineUp() |
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{
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ContentOffsetY -= (ContentViewportHeight / 10); |
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} |
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public void MouseWheelDown() |
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{
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if (IsMouseWheelScrollingEnabled) |
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{
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LineDown(); |
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} |
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} |
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public void MouseWheelLeft() |
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{
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if (IsMouseWheelScrollingEnabled) |
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{
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LineLeft(); |
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} |
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} |
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public void MouseWheelRight() |
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{
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if (IsMouseWheelScrollingEnabled) |
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{
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LineRight(); |
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} |
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} |
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public void MouseWheelUp() |
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{
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if (IsMouseWheelScrollingEnabled) |
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{
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LineUp(); |
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} |
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} |
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public void PageDown() |
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{
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ContentOffsetY += ContentViewportHeight; |
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} |
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public void PageLeft() |
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{
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ContentOffsetX -= ContentViewportWidth; |
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} |
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public void PageRight() |
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{
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ContentOffsetX += ContentViewportWidth; |
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} |
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public void PageUp() |
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{
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ContentOffsetY -= ContentViewportHeight; |
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} |
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public void SetHorizontalOffset(double offset) |
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{
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if (disableScrollOffsetSync) |
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return; |
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try |
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{
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disableScrollOffsetSync = true; |
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ContentOffsetX = offset / ContentScale; |
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} |
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finally |
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{
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disableScrollOffsetSync = false; |
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} |
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} |
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public void SetVerticalOffset(double offset) |
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{
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if (disableScrollOffsetSync) |
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return; |
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try |
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{
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disableScrollOffsetSync = true; |
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ContentOffsetY = offset / ContentScale; |
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} |
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finally |
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{
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disableScrollOffsetSync = false; |
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} |
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} |
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public Rect MakeVisible(Visual visual, Rect rectangle) |
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{
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return rectangle; |
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} |
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} |
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} |
