C# 如何控制标签或任何控制图片盒的位置?
我正在PictureBox中成功移动控件(标签或图像)。当我移动时,它将保存控制位置(x,y) 像这样: 但问题是:图像结果是: 在gif图像出现之前,我在中央屏幕上拖放了一个标签控件。但结果图像不会将标签保存在中央屏幕中 我已将PictureBox属性设置为StretchImage 在PictureBox中获取位置和绘图文本的代码,如:C# 如何控制标签或任何控制图片盒的位置?,c#,C#,我正在PictureBox中成功移动控件(标签或图像)。当我移动时,它将保存控制位置(x,y) 像这样: 但问题是:图像结果是: 在gif图像出现之前,我在中央屏幕上拖放了一个标签控件。但结果图像不会将标签保存在中央屏幕中 我已将PictureBox属性设置为StretchImage 在PictureBox中获取位置和绘图文本的代码,如: public PositionControl CtrlPos = new PositionControl(); private void control_
public PositionControl CtrlPos = new PositionControl();
private void control_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
Control control = (Control)sender;
Point nextPosition = new Point();
nextPosition = picPreview.PointToClient(MousePosition);
nextPosition.Offset(mouseX, mouseY);
control.Location = nextPosition;
CtrlPos.x = nextPosition.X;
CtrlPos.y = nextPosition.Y;
Invalidate();
}
}
我的代码是父控件(PictureBox)包含所有控件
在我的课堂上,我用的是:
private void picPreview_MouseMove(object sender, MouseEventArgs e)
{
if (SelectedControl != null && e.Button == MouseButtons.Left)
{
timer1.Stop();
Invalidate();
if (SelectedControl.Height < 20)
{
SelectedControl.Height = 20;
direction = Direction.None;
Cursor = Cursors.Default;
return;
}
else if (SelectedControl.Width < 20)
{
SelectedControl.Width = 20;
direction = Direction.None;
Cursor = Cursors.Default;
return;
}
//get the current mouse position relative the the app
Point pos = picPreview.PointToClient(MousePosition);
#region resize the control in 8 directions
if (direction == Direction.NW)
{
//north west, location and width, height change
newLocation = new Point(pos.X, pos.Y);
newSize = new Size(SelectedControl.Size.Width - (newLocation.X - SelectedControl.Location.X),
SelectedControl.Size.Height - (newLocation.Y - SelectedControl.Location.Y));
SelectedControl.Location = newLocation;
CtrlPos.x = newLocation.X;
CtrlPos.y = newLocation.Y;
SelectedControl.Size = newSize;
}
else if (direction == Direction.SE)
{
//south east, width and height change
newLocation = new Point(pos.X, pos.Y);
newSize = new Size(SelectedControl.Size.Width + (newLocation.X - SelectedControl.Size.Width - SelectedControl.Location.X),
SelectedControl.Height + (newLocation.Y - SelectedControl.Height - SelectedControl.Location.Y));
SelectedControl.Size = newSize;
}
else if (direction == Direction.N)
{
//north, location and height change
newLocation = new Point(SelectedControl.Location.X, pos.Y);
newSize = new Size(SelectedControl.Width,
SelectedControl.Height - (pos.Y - SelectedControl.Location.Y));
SelectedControl.Location = newLocation;
SelectedControl.Size = newSize;
}
else if (direction == Direction.S)
{
//south, only the height changes
newLocation = new Point(pos.X, pos.Y);
newSize = new Size(SelectedControl.Width,
pos.Y - SelectedControl.Location.Y);
SelectedControl.Size = newSize;
}
else if (direction == Direction.W)
{
//west, location and width will change
newLocation = new Point(pos.X, SelectedControl.Location.Y);
newSize = new Size(SelectedControl.Width - (pos.X - SelectedControl.Location.X),
SelectedControl.Height);
SelectedControl.Location = newLocation;
SelectedControl.Size = newSize;
}
else if (direction == Direction.E)
{
//east, only width changes
newLocation = new Point(pos.X, pos.Y);
newSize = new Size(pos.X - SelectedControl.Location.X,
SelectedControl.Height);
SelectedControl.Size = newSize;
}
else if (direction == Direction.SW)
{
//south west, location, width and height change
newLocation = new Point(pos.X, SelectedControl.Location.Y);
newSize = new Size(SelectedControl.Width - (pos.X - SelectedControl.Location.X),
pos.Y - SelectedControl.Location.Y);
SelectedControl.Location = newLocation;
SelectedControl.Size = newSize;
}
else if (direction == Direction.NE)
{
//north east, location, width and height change
newLocation = new Point(SelectedControl.Location.X, pos.Y);
newSize = new Size(pos.X - SelectedControl.Location.X,
SelectedControl.Height - (pos.Y - SelectedControl.Location.Y));
SelectedControl.Location = newLocation;
SelectedControl.Size = newSize;
}
#endregion
}
}
更新:
我使用代码将label1
添加到pictureBox1
中,如下所示:
g.DrawImage( DrawText(image, new Font(cbxFont.Text, fontSize),
colorInput, Color.Transparent),
Point.Round(stretched( CtrlPos.Location, picPreview));
pictureBox1.Controls.Add(label1)
如果您的图片盒
位于大小模式
拉伸图像
或缩放
中,则像素将被缩放;但是,标签
的位置
不是。因此,您可以计算绘制位置:
PointF stretched(Point p0, PictureBox pb)
{
if (pb.Image == null) return PointF.Empty;
float scaleX = 1f * pb.Image.Width / pb.ClientSize.Width;
float scaleY = 1f * pb.Image.Height / pb.ClientSize.Height;
return new PointF(p0.X * scaleX, p0.Y * scaleY);
}
您可以将其称为pointfp1=stretched(p0,pictureBox1)代码>
你可能会这样画:
g.DrawImage( DrawText(image, new Font(cbxFont.Text, fontSize),
colorInput, Color.Transparent),
Point.Round(stretched( CtrlPos.Location, picPreview));
如果您还想校正尺寸,可以使用类似的功能
如果SizeMode
为CenterImage
,则像素不会缩放,但很可能会进行转置,也需要进行校正
对于另一个方向,只需切换分数中的分母和分子 如果您的图片盒
位于Sizemodes
StretchImage
或缩放
中,则会缩放像素;但是,标签
的位置
不是。因此,您可以计算绘制位置:
PointF stretched(Point p0, PictureBox pb)
{
if (pb.Image == null) return PointF.Empty;
float scaleX = 1f * pb.Image.Width / pb.ClientSize.Width;
float scaleY = 1f * pb.Image.Height / pb.ClientSize.Height;
return new PointF(p0.X * scaleX, p0.Y * scaleY);
}
您可以将其称为pointfp1=stretched(p0,pictureBox1)代码>
你可能会这样画:
g.DrawImage( DrawText(image, new Font(cbxFont.Text, fontSize),
colorInput, Color.Transparent),
Point.Round(stretched( CtrlPos.Location, picPreview));
如果您还想校正尺寸,可以使用类似的功能
如果SizeMode
为CenterImage
,则像素不会缩放,但很可能会进行转置,也需要进行校正
对于另一个方向,只需切换分数中的分母和分子 尽管你做出了努力,我还是觉得这个问题不太清楚。首先想到的是:标签是放在图片盒上还是在里面?看见对您想要实现的目标进行更清晰的顶层描述也会有所帮助..我使用此代码将label1添加到pictureBox1。像pictureBox1.Controls.Add(label1)代码>。我只想将PictureBox设置为图像。当我将标签设置在位置:结果图像中PictureBox的中心或左侧时,将导出图像。目前,当我在PictureBox中设置位置时,结果中没有显示Point()。尽管您做出了努力,但我发现这个问题相当不清楚。首先想到的是:标签是放在图片盒上还是在里面?看见对您想要实现的目标进行更清晰的顶层描述也会有所帮助..我使用此代码将label1添加到pictureBox1。像pictureBox1.Controls.Add(label1)代码>。我只想将PictureBox设置为图像。当我将标签设置在位置:结果图像中PictureBox的中心或左侧时,将导出图像。当前,当我在PictureBox中设置位置时,结果中没有显示Point()。有图像吗?scalX/Y值可信吗?啊,这是另一个方向;有时你需要一个,有时需要另一个。我会更新答案..有图像了吗?scalX/Y值可信吗?啊,这是另一个方向;有时你需要一个,有时需要另一个。我会更新答案。。