Winform圆形环绕的Loading动画实现代码
之前写了一个wpf的圆形环绕的loading动画,现在写一个winform的圆形环绕的loading动画。
1.新建winform项目,添加一个picturebox控件,命名为:picturebox;
2.引用中添加using system.drawing.drawing2d;
3.form窗体命名为:loading,cs全部代码如下:
using system;
using system.collections.generic;
using system.componentmodel;
using system.data;
using system.drawing;
using system.linq;
using system.text;
using system.windows.forms;
using system.collections;
using system.drawing.drawing2d;
namespace circle_processbar
{
public partial class loading : form
{
private int count = -1;
private arraylist images = new arraylist();
public bitmap[] bitmap = new bitmap[8];
private int _value = 1;
private color _circlecolor = color.red;
private float _circlesize = 0.8f;
public loading()
{
initializecomponent();
}
public color circlecolor
{
get { return _circlecolor; }
set
{
_circlecolor = value;
invalidate();
}
}
public float circlesize
{
get { return _circlesize; }
set
{
if (value <= 0.0f)
_circlesize = 0.05f;
else
_circlesize = value > 4.0f ? 4.0f : value;
invalidate();
}
}
public bitmap drawcircle(int j)
{
const float angle = 360.0f / 8; bitmap map = new bitmap(150, 150);
graphics g = graphics.fromimage(map);
g.translatetransform(width / 2.0f, height / 2.0f);
g.rotatetransform(angle * _value);
g.interpolationmode = interpolationmode.highqualitybicubic;
g.smoothingmode = smoothingmode.antialias;
int[] a = new int[8] { 25, 50, 75, 100, 125, 150, 175, 200 };
for (int i = 1; i <= 8; i++)
{
int alpha = a[(i + j - 1) % 8];
color drawcolor = color.fromargb(alpha, _circlecolor);
using (solidbrush brush = new solidbrush(drawcolor))
{
float sizerate = 3.5f / _circlesize;
float size = width / (6 * sizerate);
float diff = (width / 10.0f) - size;
float x = (width / 80.0f) + diff;
float y = (height / 80.0f) + diff;
g.fillellipse(brush, x, y, size, size);
g.rotatetransform(angle);
}
}
return map;
}
public void draw()
{
for (int j = 0; j < 8; j++)
{
bitmap[7-j] = drawcircle(j);
}
}
protected override void onresize(eventargs e)
{
setnewsize();
base.onresize(e);
}
protected override void onsizechanged(eventargs e)
{
setnewsize();
base.onsizechanged(e);
}
private void setnewsize()
{
int size = math.max(width, height);
size = new size(size, size);
}
public void set()
{
for (int i = 0; i < 8; i++)
{
draw();
bitmap map = new bitmap((bitmap[i]), new size(120, 110));
images.add(map);
}
picturebox.image = (image)images[0];
picturebox.size = picturebox.image.size;
}
private void picturebox_click(object sender, eventargs e)
{
this.visible = false;
base.dispose();
}
private void timer_tick(object sender, eventargs e)
{
set();
count = (count + 1) % 8;
picturebox.image = (image)images[count];
}
private void button1_click(object sender, eventargs e)
{
this.visible = false;
base.dispose();
}
}
}
4.效果如图:
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