/// <summary>
/// 绘制网格？
/// </summary>
/// <param name="canvas"></param>
/// <param name="unitrect"></param>
public void Draw(ICanvas canvas, RectangleF unitrect)
{
if (Enabled == false)
{
return;
}
float gridX = Spacing.Width;
float gridY = Spacing.Height;
float gridscreensizeX = canvas.ToScreen(gridX);
float gridscreensizeY = canvas.ToScreen(gridY);
if (gridscreensizeX < MinSize || gridscreensizeY < MinSize) //超过最小尺寸则不绘制网格
{
return;
}
PointF leftpoint = unitrect.Location;
PointF rightpoint = ScreenUtils.RightPoint(canvas, unitrect);
float left = (float)Math.Round(leftpoint.X / gridX) * gridX;
float top = unitrect.Height + unitrect.Y;
float right = rightpoint.X;
float bottom = (float)Math.Round(leftpoint.Y / gridY) * gridY;
if (GridStyle == eStyle.Dots) //如果网格类型是点？？
{
GDI gdi = new GDI();
gdi.BeginGDI(canvas.Graphics);
for (float x = left; x <= right; x += gridX)
{
for (float y = bottom; y <= top; y += gridY)
{
PointF p1 = canvas.ToScreen(new UnitPoint(x, y));
gdi.SetPixel((int)p1.X, (int)p1.Y, m_color.ToArgb()); //设置像素
}
}
gdi.EndGDI();
}
if (GridStyle == eStyle.Lines) //如果是线
{
Pen pen = new Pen(m_color);
Pen pen1 = new Pen(Color.DarkGray, 2); //每10根线条第10根线条得颜色粗细
Pen pen2 = new Pen(Color.Yellow, 2); //边界线条
GraphicsPath path = new GraphicsPath();
// draw vertical lines画垂线
while (left < right)
{
PointF p1 = canvas.ToScreen(new UnitPoint(left, leftpoint.Y));
PointF p2 = canvas.ToScreen(new UnitPoint(left, rightpoint.Y));
if (left % 50 == 0 && left != 0)
{
canvas.Graphics.DrawLine(pen2, p1, p2);
}
else if (left % 10 == 0)
{
canvas.Graphics.DrawLine(pen1, p1, p2);
}
else
{
path.AddLine(p1, p2);
path.CloseFigure();
}
left += gridX;
}
// draw horizontal lines绘制水平线
while (bottom < top)
{
PointF p1 = canvas.ToScreen(new UnitPoint(leftpoint.X, bottom));
PointF p2 = canvas.ToScreen(new UnitPoint(rightpoint.X, bottom));
if (bottom % 50 == 0 && bottom != 0)
{
canvas.Graphics.DrawLine(pen2, p1, p2);
}
else if (bottom % 10 == 0)
{
canvas.Graphics.DrawLine(pen1, p1, p2);
}
else
{
path.AddLine(p1, p2);
path.CloseFigure();
}
bottom += gridY;
}
canvas.Graphics.DrawPath(pen, path);
}
}
/// <summary>
/// 绘制网格
/// </summary>
/// <param name="canvas">画布</param>
/// <param name="unitrect">单元矩形</param>
public void Draw(ICanvas canvas, RectangleF unitrect)
{
if (Enabled == false)
{
return;
}
float gridX = Spacing.Width;
float gridY = Spacing.Height;
float gridscreensizeX = canvas.ToScreen(gridX);
float gridscreensizeY = canvas.ToScreen(gridY);
if (gridscreensizeX < MinSize || gridscreensizeY < MinSize)
{
return;
}
PointF leftpoint = unitrect.Location;
PointF rightpoint = ScreenUtils.RightPoint(canvas, unitrect);
float left = (float)Math.Round(leftpoint.X / gridX) * gridX;
float top = unitrect.Height + unitrect.Y;
float right = rightpoint.X;
float bottom = (float)Math.Round(leftpoint.Y / gridY) * gridY;
if (GridStyle == eStyle.Dots)
{
GDI gdi = new GDI();
gdi.BeginGDI(canvas.Graphics);
for (float x = left; x <= right; x += gridX)
{
for (float y = bottom; y <= top; y += gridY)
{
PointF p1 = canvas.ToScreen(new UnitPoint(x, y));
gdi.SetPixel((int)p1.X, (int)p1.Y, color.ToArgb());
}
}
gdi.EndGDI();
}
if (GridStyle == eStyle.Lines)
{
Pen pen = new Pen(color);
GraphicsPath path = new GraphicsPath();
// 画垂直线条
while (left < right)
{
PointF p1 = canvas.ToScreen(new UnitPoint(left, leftpoint.Y));
PointF p2 = canvas.ToScreen(new UnitPoint(left, rightpoint.Y));
path.AddLine(p1, p2);
path.CloseFigure();
left += gridX;
}
// 画水平线条
while (bottom < top)
{
PointF p1 = canvas.ToScreen(new UnitPoint(leftpoint.X, bottom));
PointF p2 = canvas.ToScreen(new UnitPoint(rightpoint.X, bottom));
path.AddLine(p1, p2);
path.CloseFigure();
bottom += gridY;
}
canvas.Graphics.DrawPath(pen, path);
}
}
public void DrawRuler(ICanvas canvas, RectangleF unitrect)
{
if (Enabled == false)
{
return;
}
float gridX = Spacing.Width;
float gridY = Spacing.Height;
float gridscreensizeX = canvas.ToScreen(gridX);
float gridscreensizeY = canvas.ToScreen(gridY);
if (gridscreensizeX < MinSize || gridscreensizeY < MinSize)
{
return;
}
PointF leftpoint = unitrect.Location;
PointF rightpoint = ScreenUtils.RightPoint(canvas, unitrect);
float left = 0;
float top = unitrect.Height + unitrect.Y;
float right = rightpoint.X;
float bottom = 0;
if (true)//绘制标尺
{
Pen pen = new Pen(Color.Red);
GraphicsPath path = new GraphicsPath();
float curSize = GetViewGrade(canvas);
// draw vertical lines
left = (float)Math.Round(leftpoint.X / gridX) * gridX - 1;
double startPos = canvas.ToUnit(canvas.ToScreen(leftpoint.X) + 20f);
int count = 0;
while (left < right)
{
if (left < startPos)
{
left += curSize /*0.1f*/;
count++;
continue;
}
PointF p1 = canvas.ToScreen(new UnitPoint(left, rightpoint.Y));
PointF p2 = canvas.ToScreen(new UnitPoint(left, rightpoint.Y));
p1.Y += 20;
p2.Y += 20;
if (count % 10 == 0)
{
// Set up all the string parameters.
string stringText = left.ToString("0.###");
FontFamily family = new FontFamily("Arial");
int emSize = 10;
Brush brush = Brushes.Red;
StringFormat strF = new StringFormat(StringFormatFlags.NoWrap);
canvas.Graphics.DrawString(stringText, new Font(family, emSize),
brush, new PointF(p1.X - 10, p1.Y - 20), strF);
p2.Y += 20;
}
else if (count % 5 == 0)
{
p2.Y += 15;
}
else
{
p2.Y += 10;
}
path.AddLine(p1, p2);
path.CloseFigure();
left += curSize /*0.1f*/;
count++;
}
// draw horizontal lines
bottom = (float)Math.Round(leftpoint.Y / gridY) * gridY - 1;
startPos = canvas.ToUnit(canvas.ToScreen(rightpoint.Y) - 20f);
count = 0;
while (bottom < top)
{
if (bottom > startPos)
{
break;
}
PointF p1 = canvas.ToScreen(new UnitPoint(leftpoint.X, bottom));
PointF p2 = canvas.ToScreen(new UnitPoint(leftpoint.X, bottom));
p1.X += 20;
p2.X += 20;
if (count % 10 == 0)
{
// Set up all the string parameters.
string stringText = bottom.ToString("0.###");
FontFamily family = new FontFamily("Arial");
int emSize = 10;
Brush brush = Brushes.Red;
StringFormat strF = new StringFormat(StringFormatFlags.DirectionVertical);
canvas.Graphics.DrawString(stringText, new Font(family, emSize),
brush, new PointF(p1.X - 20, p1.Y - 10), strF);
p2.X += 20;
}
else if (count % 5 == 0)
{
p2.X += 15;
}
else
{
p2.X += 10;
}
path.AddLine(p1, p2);
path.CloseFigure();
bottom += curSize /*0.1f*/;
count++;
}
canvas.Graphics.DrawPath(pen, path);
}
}