Update ZoomBorder.cs
This commit is contained in:
Wiesław Šoltés
Родитель
a6b1d9ffb9
Коммит
47b942d5ec
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@ -22,18 +22,18 @@ namespace Wpf.Controls.PanAndZoom
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private Point _previous;
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private Matrix _matrix;
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private bool _isPanning;
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private static StretchMode[] _autoFitModes = (StretchMode[])Enum.GetValues(typeof(StretchMode));
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private static ButtonName[] _buttonNames = (ButtonName[])Enum.GetValues(typeof(ButtonName));
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private static readonly StretchMode[] s_autoFitModes = (StretchMode[])Enum.GetValues(typeof(StretchMode));
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private static readonly ButtonName[] s_buttonNames = (ButtonName[])Enum.GetValues(typeof(ButtonName));
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/// <summary>
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/// Gets available stretch modes.
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/// </summary>
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public static StretchMode[] StretchModes => _autoFitModes;
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public static StretchMode[] StretchModes => s_autoFitModes;
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/// <summary>
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/// Gets available button names.
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/// </summary>
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public static ButtonName[] ButtonNames => _buttonNames;
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public static ButtonName[] ButtonNames => s_buttonNames;
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/// <inheritdoc/>
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public Action<double, double, double, double>? InvalidatedChild { get; set; }
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@ -415,15 +415,17 @@ namespace Wpf.Controls.PanAndZoom
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{
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var size = base.ArrangeOverride(finalSize);
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if (_element != null && _element.IsMeasureValid)
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if (_element == null || !_element.IsMeasureValid)
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{
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AutoFit(
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size.Width,
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size.Height,
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_element.RenderSize.Width,
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_element.RenderSize.Height);
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return size;
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}
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AutoFit(
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size.Width,
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size.Height,
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_element.RenderSize.Width,
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_element.RenderSize.Height);
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return size;
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}
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@ -441,38 +443,43 @@ namespace Wpf.Controls.PanAndZoom
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private void Border_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
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{
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if (EnableInput)
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if (!EnableInput)
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{
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Wheel(e);
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return;
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}
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Wheel(e);
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}
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private void Border_PreviewMouseDown(object sender, MouseButtonEventArgs e)
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{
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if (EnableInput)
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if (!EnableInput)
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{
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var button = PanButton;
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if ((e.ChangedButton == MouseButton.Left && button == ButtonName.Left)
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|| (e.ChangedButton == MouseButton.Right && button == ButtonName.Right)
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|| (e.ChangedButton == MouseButton.Middle && button == ButtonName.Middle))
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{
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Pressed(e);
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}
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return;
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}
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var button = PanButton;
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if ((e.ChangedButton != MouseButton.Left || button != ButtonName.Left)
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&& (e.ChangedButton != MouseButton.Right || button != ButtonName.Right)
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&& (e.ChangedButton != MouseButton.Middle || button != ButtonName.Middle))
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{
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return;
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}
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Pressed(e);
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}
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private void Border_PreviewMouseUp(object sender, MouseButtonEventArgs e)
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{
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if (EnableInput)
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if (!EnableInput)
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{
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var button = PanButton;
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if ((e.ChangedButton == MouseButton.Left && button == ButtonName.Left)
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|| (e.ChangedButton == MouseButton.Right && button == ButtonName.Right)
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|| (e.ChangedButton == MouseButton.Middle && button == ButtonName.Middle))
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{
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Released(e);
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}
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return;
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}
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var button = PanButton;
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if ((e.ChangedButton != MouseButton.Left || button != ButtonName.Left)
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&& (e.ChangedButton != MouseButton.Right || button != ButtonName.Right)
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&& (e.ChangedButton != MouseButton.Middle || button != ButtonName.Middle))
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{
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return;
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}
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Released(e);
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}
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private void Border_PreviewMouseMove(object sender, MouseEventArgs e)
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@ -485,128 +492,143 @@ namespace Wpf.Controls.PanAndZoom
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private void Border_ManipulationStarting(object? sender, ManipulationStartingEventArgs e)
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{
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if (EnableInput && _element != null)
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if (!EnableInput || _element == null)
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{
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e.ManipulationContainer = this;
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return;
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}
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e.ManipulationContainer = this;
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}
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private void Border_ManipulationDelta(object? sender, ManipulationDeltaEventArgs e)
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{
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if (EnableInput && _element != null)
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if (!EnableInput || _element == null)
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{
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var deltaManipulation = e.DeltaManipulation;
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double scale = ((deltaManipulation.Scale.X - 1) * ZoomSpeed) + 1;
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var matrix = ((MatrixTransform)_element.RenderTransform).Matrix;
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Point center = new Point(_element.RenderSize.Width / 2, _element.RenderSize.Height / 2);
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center = matrix.Transform(center);
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if (EnableGestureZoom)
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{
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matrix.ScaleAt(scale, scale, center.X, center.Y);
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}
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if (EnableGestureRotation)
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{
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matrix.RotateAt(e.DeltaManipulation.Rotation, center.X, center.Y);
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}
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if (EnableGestureTranslation)
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{
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matrix.Translate(e.DeltaManipulation.Translation.X, e.DeltaManipulation.Translation.Y);
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}
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((MatrixTransform)_element.RenderTransform).Matrix = matrix;
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e.Handled = true;
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SetValue(ZoomXPropertyKey, matrix.M11);
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SetValue(ZoomYPropertyKey, matrix.M22);
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SetValue(OffsetXPropertyKey, matrix.OffsetX);
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SetValue(OffsetYPropertyKey, matrix.OffsetY);
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return;
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}
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Manipulation(e.DeltaManipulation);
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e.Handled = true;
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}
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private void ChildChanged(UIElement element)
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{
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if (element != null && element != _element && _element != null)
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if (element == null || element == _element || _element == null)
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{
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}
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else
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{
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DetachElement();
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}
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if (element != null && element != _element)
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if (element == null || element == _element)
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{
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AttachElement(element);
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return;
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}
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AttachElement(element);
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}
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private void AttachElement(UIElement element)
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{
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if (element != null)
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if (element == null)
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{
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Defaults();
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_element = element;
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this.Focus();
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this.PreviewMouseWheel += Border_PreviewMouseWheel;
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this.PreviewMouseDown += Border_PreviewMouseDown;
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this.PreviewMouseUp += Border_PreviewMouseUp;
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this.PreviewMouseMove += Border_PreviewMouseMove;
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this.ManipulationStarting += Border_ManipulationStarting;
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this.ManipulationDelta += Border_ManipulationDelta;
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return;
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}
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Defaults();
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_element = element;
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this.Focus();
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this.PreviewMouseWheel += Border_PreviewMouseWheel;
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this.PreviewMouseDown += Border_PreviewMouseDown;
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this.PreviewMouseUp += Border_PreviewMouseUp;
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this.PreviewMouseMove += Border_PreviewMouseMove;
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this.ManipulationStarting += Border_ManipulationStarting;
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this.ManipulationDelta += Border_ManipulationDelta;
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}
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private void DetachElement()
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{
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if (_element != null)
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if (_element == null)
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{
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this.PreviewMouseWheel -= Border_PreviewMouseWheel;
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this.PreviewMouseDown -= Border_PreviewMouseDown;
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this.PreviewMouseUp -= Border_PreviewMouseUp;
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this.PreviewMouseMove -= Border_PreviewMouseMove;
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this.ManipulationStarting -= Border_ManipulationStarting;
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this.ManipulationDelta -= Border_ManipulationDelta;
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_element.RenderTransform = null;
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_element = null;
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Defaults();
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return;
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}
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this.PreviewMouseWheel -= Border_PreviewMouseWheel;
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this.PreviewMouseDown -= Border_PreviewMouseDown;
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this.PreviewMouseUp -= Border_PreviewMouseUp;
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this.PreviewMouseMove -= Border_PreviewMouseMove;
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this.ManipulationStarting -= Border_ManipulationStarting;
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this.ManipulationDelta -= Border_ManipulationDelta;
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_element.RenderTransform = null;
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_element = null;
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Defaults();
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}
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private void Wheel(MouseWheelEventArgs e)
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{
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if (_element != null && Mouse.Captured == null)
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if (_element == null || Mouse.Captured != null)
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{
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Point point = e.GetPosition(_element);
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ZoomDeltaTo((double)e.Delta, point.X, point.Y);
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return;
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}
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Point point = e.GetPosition(_element);
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ZoomDeltaTo((double)e.Delta, point.X, point.Y);
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}
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private void Pressed(MouseButtonEventArgs e)
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{
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if (_element != null && Mouse.Captured == null && _isPanning == false)
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if (_element == null || Mouse.Captured != null || _isPanning != false)
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{
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Point point = e.GetPosition(_element);
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StartPan(point.X, point.Y);
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_element.CaptureMouse();
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_isPanning = true;
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return;
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}
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Point point = e.GetPosition(_element);
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StartPan(point.X, point.Y);
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_element.CaptureMouse();
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_isPanning = true;
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}
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private void Released(MouseButtonEventArgs e)
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{
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if (_element != null && _element.IsMouseCaptured == true && _isPanning == true)
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if (_element == null || _element.IsMouseCaptured != true || _isPanning != true)
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{
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_element.ReleaseMouseCapture();
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_isPanning = false;
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return;
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}
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_element.ReleaseMouseCapture();
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_isPanning = false;
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}
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private void Moved(MouseEventArgs e)
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{
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if (_element != null && _element.IsMouseCaptured == true && _isPanning == true)
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if (_element == null || _element.IsMouseCaptured != true || _isPanning != true)
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{
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Point point = e.GetPosition(_element);
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PanTo(point.X, point.Y);
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return;
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}
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Point point = e.GetPosition(_element);
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PanTo(point.X, point.Y);
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}
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private void Manipulation(ManipulationDelta delta)
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{
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if (_element == null)
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{
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return;
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}
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var scale = ((delta.Scale.X - 1) * ZoomSpeed) + 1;
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var center = new Point(_element.RenderSize.Width / 2, _element.RenderSize.Height / 2);
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center = _matrix.Transform(center);
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if (EnableGestureZoom)
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{
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_matrix.ScaleAt(scale, scale, center.X, center.Y);
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}
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if (EnableGestureRotation)
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{
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_matrix.RotateAt(delta.Rotation, center.X, center.Y);
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}
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if (EnableGestureTranslation)
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{
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_matrix.Translate(delta.Translation.X, delta.Translation.Y);
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}
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Invalidate();
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}
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private double Constrain(double value, double minimum, double maximum)
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@ -632,22 +654,23 @@ namespace Wpf.Controls.PanAndZoom
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/// <inheritdoc/>
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public void Invalidate()
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{
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if (_element != null)
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if (_element == null)
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{
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if (EnableConstrains == true)
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{
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Constrain();
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}
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Debug.WriteLine($"Zoom: {_matrix.M11} {_matrix.M22} Offset: {_matrix.OffsetX} {_matrix.OffsetY}");
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SetValue(ZoomXPropertyKey, _matrix.M11);
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SetValue(ZoomYPropertyKey, _matrix.M22);
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SetValue(OffsetXPropertyKey, _matrix.OffsetX);
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SetValue(OffsetYPropertyKey, _matrix.OffsetY);
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this.InvalidatedChild?.Invoke(_matrix.M11, _matrix.M22, _matrix.OffsetX, _matrix.OffsetY);
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_element.RenderTransformOrigin = new Point(0, 0);
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_element.RenderTransform = new MatrixTransform(_matrix);
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_element.InvalidateVisual();
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return;
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}
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if (EnableConstrains == true)
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{
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Constrain();
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}
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Debug.WriteLine($"Zoom: {_matrix.M11} {_matrix.M22} Offset: {_matrix.OffsetX} {_matrix.OffsetY}");
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SetValue(ZoomXPropertyKey, _matrix.M11);
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SetValue(ZoomYPropertyKey, _matrix.M22);
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SetValue(OffsetXPropertyKey, _matrix.OffsetX);
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SetValue(OffsetYPropertyKey, _matrix.OffsetY);
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this.InvalidatedChild?.Invoke(_matrix.M11, _matrix.M22, _matrix.OffsetX, _matrix.OffsetY);
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_element.RenderTransformOrigin = new Point(0, 0);
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_element.RenderTransform = new MatrixTransform(_matrix);
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_element.InvalidateVisual();
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}
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/// <inheritdoc/>
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@ -741,6 +764,9 @@ namespace Wpf.Controls.PanAndZoom
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return MatrixHelper.ScaleAt(zoom, zoom, cx, cy);
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}
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}
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case StretchMode.None:
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break;
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}
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return Matrix.Identity;
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}
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@ -749,55 +775,59 @@ namespace Wpf.Controls.PanAndZoom
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public void Fill(double panelWidth, double panelHeight, double elementWidth, double elementHeight)
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{
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Debug.WriteLine($"Fill: {panelWidth}x{panelHeight} {elementWidth}x{elementHeight}");
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if (_element != null)
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if (_element == null)
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{
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_matrix = GetMatrix(panelWidth, panelHeight, elementWidth, elementHeight, StretchMode.Fill);
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Invalidate();
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return;
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}
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_matrix = GetMatrix(panelWidth, panelHeight, elementWidth, elementHeight, StretchMode.Fill);
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Invalidate();
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}
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/// <inheritdoc/>
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public void Uniform(double panelWidth, double panelHeight, double elementWidth, double elementHeight)
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{
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Debug.WriteLine($"Uniform: {panelWidth}x{panelHeight} {elementWidth}x{elementHeight}");
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if (_element != null)
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if (_element == null)
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{
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_matrix = GetMatrix(panelWidth, panelHeight, elementWidth, elementHeight, StretchMode.Uniform);
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Invalidate();
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return;
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}
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_matrix = GetMatrix(panelWidth, panelHeight, elementWidth, elementHeight, StretchMode.Uniform);
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Invalidate();
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}
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/// <inheritdoc/>
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public void UniformToFill(double panelWidth, double panelHeight, double elementWidth, double elementHeight)
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{
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Debug.WriteLine($"UniformToFill: {panelWidth}x{panelHeight} {elementWidth}x{elementHeight}");
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if (_element != null)
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if (_element == null)
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{
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_matrix = GetMatrix(panelWidth, panelHeight, elementWidth, elementHeight, StretchMode.UniformToFill);
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Invalidate();
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return;
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}
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_matrix = GetMatrix(panelWidth, panelHeight, elementWidth, elementHeight, StretchMode.UniformToFill);
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Invalidate();
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}
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/// <inheritdoc/>
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public void AutoFit(double panelWidth, double panelHeight, double elementWidth, double elementHeight)
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{
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Debug.WriteLine($"AutoFit: {panelWidth}x{panelHeight} {elementWidth}x{elementHeight}");
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if (_element != null)
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if (_element == null)
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{
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switch (Stretch)
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{
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case StretchMode.Fill:
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Fill(panelWidth, panelHeight, elementWidth, elementHeight);
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break;
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case StretchMode.Uniform:
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Uniform(panelWidth, panelHeight, elementWidth, elementHeight);
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break;
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case StretchMode.UniformToFill:
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UniformToFill(panelWidth, panelHeight, elementWidth, elementHeight);
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break;
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}
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Invalidate();
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return;
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}
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switch (Stretch)
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{
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case StretchMode.Fill:
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Fill(panelWidth, panelHeight, elementWidth, elementHeight);
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break;
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case StretchMode.Uniform:
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Uniform(panelWidth, panelHeight, elementWidth, elementHeight);
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break;
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case StretchMode.UniformToFill:
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UniformToFill(panelWidth, panelHeight, elementWidth, elementHeight);
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break;
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}
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Invalidate();
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}
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/// <inheritdoc/>
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@ -830,37 +860,41 @@ namespace Wpf.Controls.PanAndZoom
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/// <inheritdoc/>
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public void Fill()
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{
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if (_element != null)
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if (_element == null)
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{
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Fill(this.RenderSize.Width, this.RenderSize.Height, _element.RenderSize.Width, _element.RenderSize.Height);
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return;
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}
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Fill(this.RenderSize.Width, this.RenderSize.Height, _element.RenderSize.Width, _element.RenderSize.Height);
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}
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/// <inheritdoc/>
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public void Uniform()
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{
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if (_element != null)
|
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if (_element == null)
|
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{
|
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Uniform(this.RenderSize.Width, this.RenderSize.Height, _element.RenderSize.Width, _element.RenderSize.Height);
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return;
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}
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Uniform(this.RenderSize.Width, this.RenderSize.Height, _element.RenderSize.Width, _element.RenderSize.Height);
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}
|
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/// <inheritdoc/>
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public void UniformToFill()
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{
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if (_element != null)
|
||||
if (_element == null)
|
||||
{
|
||||
UniformToFill(this.RenderSize.Width, this.RenderSize.Height, _element.RenderSize.Width, _element.RenderSize.Height);
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return;
|
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}
|
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UniformToFill(this.RenderSize.Width, this.RenderSize.Height, _element.RenderSize.Width, _element.RenderSize.Height);
|
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}
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/// <inheritdoc/>
|
||||
public void AutoFit()
|
||||
{
|
||||
if (_element != null)
|
||||
if (_element == null)
|
||||
{
|
||||
AutoFit(this.RenderSize.Width, this.RenderSize.Height, _element.RenderSize.Width, _element.RenderSize.Height);
|
||||
return;
|
||||
}
|
||||
AutoFit(this.RenderSize.Width, this.RenderSize.Height, _element.RenderSize.Width, _element.RenderSize.Height);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче