我有一个图像控件类,可以放大/缩小,填充屏幕,并执行 1:1 的比例(全部由 4 个不同的按钮控制。但是,当屏幕分辨率大于 1280 x 1024 时,我的填充屏幕和 1: 1比率不做他们应该做的事。
public void ZoomActual()
{
m_translateTransform.BeginAnimation(TranslateTransform.XProperty, CreateAnimation(0));
m_translateTransform.BeginAnimation(TranslateTransform.YProperty, CreateAnimation(0));
m_zoomFactor.BeginAnimation(ScaleTransform.ScaleXProperty, CreateAnimation(1));
m_zoomFactor.BeginAnimation(ScaleTransform.ScaleYProperty, CreateAnimation(1));
} //1:1 ratio button control
/// <summary>
/// This function is used to fill the screen with the current picture on the zoomandpan Control
/// </summary>
public void ZoomFit()
{
double screen_height = ActualHeight;
double screen_width = ActualWidth;
double image_width = m_source_child.ActualWidth;
double image_height = m_source_child.ActualHeight;
double image_ratio = image_width / image_height;
double screen_ratio = screen_width / screen_height;
if (image_width > image_height)
{
m_translateTransform.BeginAnimation(TranslateTransform.XProperty, CreateAnimation(0));
m_translateTransform.BeginAnimation(TranslateTransform.YProperty, CreateAnimation(0));
m_zoomFactor.BeginAnimation(ScaleTransform.ScaleXProperty, CreateAnimation(1 / screen_ratio * image_ratio)); //width
m_zoomFactor.BeginAnimation(ScaleTransform.ScaleYProperty, CreateAnimation(1 / screen_ratio * image_ratio)); //height
}
else
{
m_translateTransform.BeginAnimation(TranslateTransform.XProperty, CreateAnimation(0));
m_translateTransform.BeginAnimation(TranslateTransform.YProperty, CreateAnimation(0));
m_zoomFactor.BeginAnimation(ScaleTransform.ScaleXProperty, CreateAnimation((screen_ratio * image_ratio))); //width
m_zoomFactor.BeginAnimation(ScaleTransform.ScaleYProperty, CreateAnimation((screen_ratio * image_ratio))); //height
}
} //fillscreen button control
/// <summary>
/// This function is used to control the animations of the ZoomandPan. Animations consist of Zooming in
/// and out of a picture and allows panning of the displayed image
/// </summary>
/// <param name="a_toValue">used for zoom in percentage [currently set at: 1.5 (150%)]</param>
/// <returns>Animation values image</returns>
private DoubleAnimation CreateAnimation(double a_toValue)
{
var dubAni = new DoubleAnimation(a_toValue, new Duration(TimeSpan.FromMilliseconds(300)))
{
AccelerationRatio = 0.1,
DecelerationRatio = 0.9,
FillBehavior = FillBehavior.HoldEnd
};
dubAni.Freeze();
return dubAni;
} //Animation value setter
/// <summary>
/// DoZoom is used for executing the physical zoom of the picture, enlarges or shrinks image depending
/// on CreateAnimation values
/// </summary>
/// <param name="a_deltaZoom">Determinded to be + or -. can be set by mousewheel and/or buttons. Determines Zoom in/out</param>
/// <param name="a_mousePosition">Current positon of mouse</param>
/// <param name="a_physicalPositon">refrence to last area mousePosition was on image</param>
private void DoZoom(Double a_deltaZoom, Point a_mousePosition, Point a_physicalPositon)
{
double currentZoom = m_zoomFactor.ScaleX;
currentZoom *= a_deltaZoom;
if (currentZoom < MinZoom)
currentZoom = MinZoom;
else if (currentZoom > MaxZoom)
currentZoom = MaxZoom;
m_translateTransform.BeginAnimation(TranslateTransform.XProperty, CreateAnimation(-1 * (a_mousePosition.X * currentZoom - a_physicalPositon.X)));
m_translateTransform.BeginAnimation(TranslateTransform.YProperty, CreateAnimation(-1 * (a_mousePosition.Y * currentZoom - a_physicalPositon.Y)));
m_zoomFactor.BeginAnimation(ScaleTransform.ScaleXProperty, CreateAnimation(currentZoom));
m_zoomFactor.BeginAnimation(ScaleTransform.ScaleYProperty, CreateAnimation(currentZoom));
} //Zoom animation
当我这样做时,它没有做它应该做的事情,我的意思是:如果我的屏幕分辨率为 1280 x 1024 或更低,填充屏幕将填满屏幕,1:1 的比例将给出图片的实际大小。任何大于 1280 x 1024 的分辨率都会导致填充屏幕控件使图像更小(在画布内),而不是将整个图像放在窗口上。并且 1:1 比例控制将在右侧有一个小间隙,即空白区域。非常感谢提供的任何帮助,我对图像控制有点陌生,所以这看起来很微不足道。抱歉