我如何能够和他人一起缩小图像并移动所有图像 [英] How I can zoomin & zoomout images and move all images

问题描述

我在画布上显示图像，我想要移动所有图像。目前我能够移动我带上画布的最后一张图片。而且我也希望我能放大这些图像。所以请帮助我。



我尝试了什么：

I display the images on canvas and I want that i move all the images. Currently I am able to move the last image which i brought on canvas. And I also want that i zoom these images.so please help me in this.

What I have tried:

private TranslateTransform dragTranslation;

       // Constructor


       void Drag_ManipulationDelta(object sender, ManipulationDeltaRoutedEventArgs e)
       {
           // Move the rectangle.
           dragTranslation.X += e.Delta.Translation.X;
           dragTranslation.Y += e.Delta.Translation.Y;

       }

private void Stickers1_SelectionChanged（object sender，SelectionChangedEventArgs e）

{



var selecteditem = e.AddedItems [0] as StickersImageListModel;



{

Stickers1.Visibility = Visibility.Collapsed;

图片imageitem = new Image（）;

BitmapImage image = new BitmapImage（new System.Uri（selecteditem.Imageurl） ，UriKind.Absolute））;

imageitem.Source = image;

my_canvas.Children.Add（imageitem）;

imageitem.AllowDrop = true;

imageitem.ManipulationMode = ManipulationModes.All;

imageitem.ManipulationDelta + = Drag_ManipulationDelta;

dragTranslation = new TranslateTransform（）;

imageitem .RenderTransform = this.dragTranslation;

var st =（ScaleTransform）imageitem.RenderTransform;

double zoom = e.Delta> 0？ .2：-.2;

st.ScaleX + =缩放;

st.ScaleY + =缩放;



}

my_canvas.Visibility = Visibility.Visible;

}

private void Stickers1_SelectionChanged(object sender, SelectionChangedEventArgs e)
{

var selecteditem = e.AddedItems[0] as StickersImageListModel;

{
Stickers1.Visibility = Visibility.Collapsed;
Image imageitem = new Image();
BitmapImage image = new BitmapImage(new System.Uri(selecteditem.Imageurl, UriKind.Absolute));
imageitem.Source = image;
my_canvas.Children.Add(imageitem);
imageitem.AllowDrop = true;
imageitem.ManipulationMode = ManipulationModes.All;
imageitem.ManipulationDelta += Drag_ManipulationDelta;
dragTranslation = new TranslateTransform();
imageitem.RenderTransform = this.dragTranslation;
var st = (ScaleTransform)imageitem.RenderTransform;
double zoom = e.Delta > 0 ? .2 : -.2;
st.ScaleX += zoom;
st.ScaleY += zoom;

}
my_canvas.Visibility = Visibility.Visible;
}

推荐答案

一篇很棒的文章缩放/平移/移动图像存在于CP上：



用于缩放和平移的WPF自定义控件 [ ^ ]

A great Article about Zoom/Pan/Move Images exists here on CP:

A WPF Custom Control for Zooming and Panning[^]

这篇关于我如何能够和他人一起缩小图像并移动所有图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！