private void DrawAndUpdate()
{
Draw();
#region 更新到窗口上
var pathDirty = Rectangle.Ceiling(_gPathDirty.GetBounds());
pathDirty.Offset(_screenBounds.X, _screenBounds.Y);
pathDirty.Intersect(_screenBounds);
pathDirty.Offset(-_screenBounds.X, -_screenBounds.Y); //挪回来变为基于窗口的坐标
if (ShowPath)
{
_canvasWindow.SetDiBitmap(_bitmap, /*_pathDirtyRect*/ pathDirty);
}
if (_labelChanged) //ShowCommandName)
{
var labelDirtyRect = _labelRect.Width > _lastLabelRect.Width ? _labelRect : _lastLabelRect;
labelDirtyRect.Height = _labelRect.Height > _lastLabelRect.Height ? _labelRect.Height : _lastLabelRect.Height;
_canvasWindow.SetDiBitmap(_bitmap, Rectangle.Ceiling(labelDirtyRect));
}
else if (_labelVisible)
{
var labelDirty = Rectangle.Ceiling(_labelRect);
var intercected = pathDirty.IntersectsWith(labelDirty);
if (intercected && !pathDirty.Contains(labelDirty))
{
labelDirty.Intersect(pathDirty);
_canvasWindow.SetDiBitmap(_bitmap, labelDirty);
}
}
#endregion
}
private void DrawAndUpdate(bool altPath = false)
{
#region
var labelDirtyRect = _labelDirtyRect.Width > _labelLastDirtyRect.Width ? _labelDirtyRect : _labelLastDirtyRect;
labelDirtyRect.Height = _labelDirtyRect.Height > _labelLastDirtyRect.Height ? _labelDirtyRect.Height : _labelLastDirtyRect.Height;
#endregion
_bitmap.DrawWith(g =>
{
// g.Clear(Color.FromArgb(128,0,0,0));
//如果是识别与未识别之间转换，则使用region而非dirtyRect来重绘
if (altPath)
{
g.Clip = _pathDirtyRegion;
}
else
{
g.SetClip(_pathDirtyRect);
}
if (_labelChanged)
{
g.SetClip(labelDirtyRect, CombineMode.Union);
}
g.Clear(Color.Transparent);
#region 1) 绘制路径
if (ShowPath && _pathVisible)
{
g.DrawPath(_shadowPen, _gPath);
g.DrawPath(_borderPen, _gPath);
g.DrawPath(_pathPen, _gPath);
}
#endregion
#region 2) 绘制标签
if (ShowCommandName && _labelVisible)
{
var labelDirty = Rectangle.Ceiling(_labelDirtyRect);
var intercected = _pathDirtyRect.IntersectsWith(labelDirty);
//如果Label的内容改变，则整个重绘
//不然，就判断哪些区域收到了path的影响，然只更新受影响的一小部分。
if (_labelChanged)
{
g.SetClip(labelDirty);
}
else if (!intercected)
{
return;
}
else if (!_pathDirtyRect.Contains(labelDirty))
{
labelDirty.Intersect(_pathDirtyRect);
g.SetClip(labelDirty);
}
using (var pen = new Pen(Color.White, 1.5f * _dpiFactor))
using (var shadow = new Pen(Color.FromArgb(40, 0, 0, 0), 3f * _dpiFactor))
{
DrawRoundedRectangle(g, RectangleF.Inflate(_labelDirtyRect,
-1f * _dpiFactor, -1f * _dpiFactor),
(int)(12 * _dpiFactor), shadow, Color.Transparent);
DrawRoundedRectangle(g, RectangleF.Inflate(_labelDirtyRect,
-2.6f * _dpiFactor, -2.6f * _dpiFactor),
(int)(12 * _dpiFactor), pen, _labelBgColor);
if (_labelColor != Color.White)
{
using (var stroke = new Pen(Color.White, 1.5f * _dpiFactor))
g.DrawPath(stroke, _labelPath);
}
using (Brush brush = new SolidBrush(_labelColor)) g.FillPath(brush, _labelPath);
}
}
#endregion
});
#region 3) 更新到窗口上
if (ShowPath)
{
_canvasWindow.SetDiBitmap(_bitmap, _pathDirtyRect);
}
if (ShowCommandName)
{
var labelDirty = Rectangle.Ceiling(labelDirtyRect);
var intercected = _pathDirtyRect.IntersectsWith(labelDirty);
if (_labelChanged)
{
_canvasWindow.SetDiBitmap(_bitmap, labelDirty);
}
else if (intercected && !_pathDirtyRect.Contains(labelDirty))
{
labelDirty.Intersect(_pathDirtyRect);
_canvasWindow.SetDiBitmap(_bitmap, labelDirty);
}
}
#endregion
}
