protected override void OnPaint(PaintEventArgs e)
{
Graphics g_main = e.Graphics;
g_main.SmoothingMode = SmoothingMode.HighQuality; //使绘图质量最高，即消除锯齿
g_main.InterpolationMode = InterpolationMode.HighQualityBicubic;
g_main.PixelOffsetMode = PixelOffsetMode.HighQuality; //高像素偏移质量
Rectangle rect = this.ClientRectangle;
using (Bitmap bitmap = new Bitmap(rect.Width, rect.Height + dimHeight))
{
int last = chatVScroll.Bounds.Y + chatVScroll.Value;
int first = last - (300 + dimHeight);
List <WebVideoListItem> _Items = Items.FindAll(db => (db.Bounds.Y > first && db.Bounds.Y - last < rect.Height));
using (Graphics g = Graphics.FromImage(bitmap))
{
g.TranslateTransform(0, -(chatVScroll.Value - dimHeight)); //根据滚动条的值设置坐标偏移
g.SmoothingMode = SmoothingMode.HighQuality; //使绘图质量最高，即消除锯齿
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAliasGridFit;
g.PixelOffsetMode = PixelOffsetMode.HighQuality; //高像素偏移质量
foreach (WebVideoListItem it in _Items)
{
if (it.IsRender)
{
if (it.Img != null)
{
g.DrawImage(it.Img, it.Bounds);
}
else
{
g.FillRectangle(FontColor1, it.Bounds);
g.DrawString(FontAwesome.GetUnicode("51BC"), onA, FontColor2, it.Bounds, _StringFormatC);
}
g.FillRectangle(solidBrush3, it.NameBound);
g.DrawString(it.Name, on, FontColor1, it.NameBound, _StringFormat);
if (it.MouseHover)
{
g.FillRectangle(solidBrush, it.Bounds);
g.DrawString(FontAwesome.GetUnicode("518F"), onA, FontColor1, it.Bounds, _StringFormatC);
}
if (it.Select)
{
g.DrawRectangle(pen, it.Bound);
//g.FillRectangle(yllosolidBrush, it.Bounds);
}
}
}
//g.ResetTransform();//重置坐标系
}
//if (bitmapTop != null) {
// bitmapTop.Dispose();
//}
if (dimHeight > 0 && TopChange != null && _Items.Count > 0)
{
Bitmap bitmapTop = new Bitmap(rect.Width, dimHeight);
Rectangle rectTop = new Rectangle(0, 0, rect.Width, dimHeight);
using (Graphics gTop = Graphics.FromImage(bitmapTop))
{
//gTop.SmoothingMode = SmoothingMode.AntiAlias;//使绘图质量最高，即消除锯齿
//gTop.InterpolationMode = InterpolationMode.HighQualityBicubic;
////g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;
//gTop.PixelOffsetMode = PixelOffsetMode.HighQuality; //高像素偏移质量
gTop.DrawImage(bitmap, rectTop, rectTop, GraphicsUnit.Pixel);
}
//if (Bmp != null)
//{
// Bmp.Dispose();
// Marshal.FreeHGlobal(ImageCopyPointer);
//}
Rectangle Rect = new Rectangle(0, 0, bitmapTop.Width, bitmapTop.Height);
bitmapTop.GaussianBlur(ref Rect, 80, false);
using (Graphics gTop = Graphics.FromImage(bitmapTop))
{
gTop.FillRectangle(solidBrush2, rectTop);
}
//Bmp.UsmSharpen(ref Rect, BarRadius.Value, BarAmount.Value);
TopChange(bitmapTop);
}
g_main.DrawImage(bitmap, rect, new Rectangle(0, dimHeight, rect.Width, rect.Height), GraphicsUnit.Pixel);
//g_main.DrawImage(bitmap, rect, new Rectangle(0, 0, rect.Width, rect.Height + 40), GraphicsUnit.Pixel);
if (chatVScroll.ShouldBeDraw)//是否绘制滚动条
{
chatVScroll.ReDrawScroll(g_main);
}
}
base.OnPaint(e);
}