public HCCanvas()
{
FPen = new HCPen();
FPen.OnChanged = DoPenChanged;
FBrush = new HCBrush();
FBrush.OnChanged = DoBrushChanged;
FFont = new HCFont();
FFont.OnChanged = DoFontChanged;
}
public HCCanvas()
{
IntPtr vDC = User.GetDC(IntPtr.Zero);
try
{
ScreenLogPixels = GDI.GetDeviceCaps(vDC, GDI.LOGPIXELSY);
}
finally
{
User.ReleaseDC(IntPtr.Zero, vDC);
}
FPen = new HCPen();
FPen.OnChanged = DoPenChanged;
FBrush = new HCBrush();
FBrush.OnChanged = DoBrushChanged;
FFont = new HCFont();
FFont.OnChanged = DoFontChanged;
}
private bool FShowLineNo; // 行号
protected override void DoDrawItemPaintBefor(HCCustomData aData, int aItemNo, int aDrawItemNo,
RECT aDrawRect, RECT aClearRect, int aDataDrawLeft, int aDataDrawRight, int aDataDrawBottom, int aDataScreenTop,
int ADataScreenBottom, HCCanvas ACanvas, PaintInfo APaintInfo)
{
base.DoDrawItemPaintBefor(aData, aItemNo, aDrawItemNo, aDrawRect, aClearRect, aDataDrawLeft, aDataDrawRight,
aDataDrawBottom, aDataScreenTop, ADataScreenBottom, ACanvas, APaintInfo);
if (!APaintInfo.Print)
{
if (FShowLineActiveMark)
{
if (aDrawItemNo == GetSelectStartDrawItemNo())
{
ACanvas.Pen.BeginUpdate();
try
{
ACanvas.Pen.Color = Color.Blue;
ACanvas.Pen.Style = HCPenStyle.psSolid;
}
finally
{
ACanvas.Pen.EndUpdate();
}
int vTop = aDrawRect.Top + DrawItems[aDrawItemNo].Height / 2;
ACanvas.MoveTo(aDataDrawLeft - 10, vTop);
ACanvas.LineTo(aDataDrawLeft - 11, vTop);
ACanvas.MoveTo(aDataDrawLeft - 11, vTop - 1);
ACanvas.LineTo(aDataDrawLeft - 11, vTop + 2);
ACanvas.MoveTo(aDataDrawLeft - 12, vTop - 2);
ACanvas.LineTo(aDataDrawLeft - 12, vTop + 3);
ACanvas.MoveTo(aDataDrawLeft - 13, vTop - 3);
ACanvas.LineTo(aDataDrawLeft - 13, vTop + 4);
ACanvas.MoveTo(aDataDrawLeft - 14, vTop - 4);
ACanvas.LineTo(aDataDrawLeft - 14, vTop + 5);
ACanvas.MoveTo(aDataDrawLeft - 15, vTop - 2);
ACanvas.LineTo(aDataDrawLeft - 15, vTop + 3);
ACanvas.MoveTo(aDataDrawLeft - 16, vTop - 2);
ACanvas.LineTo(aDataDrawLeft - 16, vTop + 3);
}
}
if (FShowUnderLine)
{
if (DrawItems[aDrawItemNo].LineFirst)
{
ACanvas.Pen.BeginUpdate();
try
{
ACanvas.Pen.Color = Color.Black;
ACanvas.Pen.Style = HCPenStyle.psSolid;
}
finally
{
ACanvas.Pen.EndUpdate();
}
ACanvas.MoveTo(aDataDrawLeft, aDrawRect.Bottom);
ACanvas.LineTo(aDataDrawLeft + this.Width, aDrawRect.Bottom);
}
}
if (FShowLineNo)
{
if (DrawItems[aDrawItemNo].LineFirst)
{
int vLineNo = 0;
for (int i = 0; i <= aDrawItemNo; i++)
{
if (DrawItems[i].LineFirst)
{
vLineNo++;
}
}
// 20181103
IntPtr vOldFont = ACanvas.Font.Handle;
try
{
using (HCFont vFont = new HCFont())
{
vFont.BeginUpdate();
try
{
vFont.Size = 10;
vFont.Family = "Courier New";
vFont.Color = Color.FromArgb(180, 180, 180);
}
finally
{
vFont.EndUpdate();
}
ACanvas.Brush.Style = HCBrushStyle.bsClear;
GDI.SelectObject(ACanvas.Handle, vFont.Handle);
int vTop = aDrawRect.Top + (aDrawRect.Bottom - aDrawRect.Top - 16) / 2;
ACanvas.TextOut(aDataDrawLeft - 50, vTop, vLineNo.ToString());
}
}
finally
{
GDI.SelectObject(ACanvas.Font.Handle, vOldFont);
}
}
}
}
}