public void UpdateRuler()
{
TimeCode startTimeCode = (TimeCode)m_TimeStart.TimeOfDay;
TimeCode endTimeCode = (TimeCode)m_TimeRecord.TimeOfDay;
if (endTimeCode < startTimeCode)
{
endTimeCode += TimeCode.tcDay;
}
Graphics gp = this.CreateGraphics();
int widthTotal = (int)((endTimeCode - startTimeCode).ToLong() * m_RulerUnit / m_RulerSpacing.ToLong()) +
(int)Math.Ceiling(gp.MeasureString("00:00:00", m_RulerFont).Width);
if (widthTotal <= this.Width)
{
hScroll.Visible = false;
hScroll.Value = 0;
pnClip.Height = this.Height - pnRuler.Height;
pnRecord.Height = pnPreview.Height = pnPlay.Height = pnClip.Height + 10;
}
else
{
pnClip.Height = this.Height - pnRuler.Height - hScroll.Height;
pnRecord.Height = pnPreview.Height = pnPlay.Height = pnClip.Height + 10;
hScroll.Visible = true;
}
if (widthTotal < this.Width)
{
widthTotal = this.Width;
endTimeCode.FromFrame(widthTotal * m_RulerSpacing.ToLong() / m_RulerUnit);
endTimeCode += startTimeCode;
}
if (hScroll.Visible)
{
TimeCode tcAdd = new TimeCode();
tcAdd.FromFrame((int)((hScroll.Value * widthTotal / hScroll.Maximum) * m_RulerSpacing.ToLong() / m_RulerUnit));
startTimeCode += tcAdd;
m_TimeRulerBegin = m_TimeStart.AddMilliseconds(tcAdd.ToLong() * 40);
}
else
{
m_TimeRulerBegin = m_TimeStart;
}
m_TimeRulerEnd = m_TimeRulerBegin.AddMilliseconds(this.Width * m_RulerSpacing.ToLong() * 40 / m_RulerUnit);
Bitmap bmp = new Bitmap(pnRuler.Width, pnRuler.Height);
gp = Graphics.FromImage(bmp);
gp.Clear(pnRuler.BackColor);
if (m_TimeMarkIn <= m_TimeMarkOut)
{
if (((m_TimeRulerBegin <= m_TimeMarkIn && m_TimeMarkIn <= m_TimeRulerEnd) ||
((m_TimeRulerBegin <= m_TimeMarkOut && m_TimeMarkOut <= m_TimeRulerEnd))) ||
(m_TimeMarkIn <= m_TimeRulerBegin && m_TimeRulerEnd <= m_TimeMarkOut))
{
int xB = 0, xE = 0;
if (m_TimeMarkIn <= m_TimeRulerBegin)
{
xB = 0;
}
else
{
xB = (int)(((TimeCode)(m_TimeMarkIn - m_TimeRulerBegin)).ToLong() * m_RulerUnit / m_RulerSpacing.ToLong());
}
if (m_TimeRulerEnd <= m_TimeRulerBegin)
{
xE = 0;
}
else
{
xE = (int)(((TimeCode)(m_TimeMarkOut - m_TimeRulerBegin)).ToLong() * m_RulerUnit / m_RulerSpacing.ToLong());
}
gp.FillRectangle(Brushes.Yellow, xB, 0, xE - xB, pnRuler.Height);
}
}
else
{
if (m_TimeRulerBegin <= m_TimeMarkIn && m_TimeMarkIn <= m_TimeRulerEnd)
{
int xB = 0;
if (m_TimeMarkIn <= m_TimeRulerBegin)
{
xB = 0;
}
else
{
xB = (int)(((TimeCode)(m_TimeMarkIn - m_TimeRulerBegin)).ToLong() * m_RulerUnit / m_RulerSpacing.ToLong());
}
gp.FillRectangle(Brushes.Yellow, xB, 0, 1, pnRuler.Height);
}
}
int maxWidth = this.Width - (int)Math.Ceiling(gp.MeasureString("00:00:00", m_RulerFont).Width);
TimeCode tcCur = startTimeCode.Celling();
while (tcCur.ToLong() % m_RulerSpacing.ToLong() != 0)
{
tcCur += TimeCode.tcSec;
}
Pen pen = new Pen(Brushes.Black);
// Vẽ dòng kẻ dưới
gp.DrawLine(pen, 0, bmp.Height - 1, bmp.Width, bmp.Height - 1);
// Vẽ vạch nhỏ trước vạch đầu tiên
tcCur -= m_RulerSpacing;
for (int i = (int)((tcCur.ToLong() - startTimeCode.ToLong()) * m_RulerUnit /
m_RulerSpacing.ToLong()); i <= this.Width; i += m_RulerUnit)
{
// Vẽ vạch
int xB = i, yB = pnRuler.Height;
gp.DrawLine(pen, xB, yB, xB, yB - 10);
// Vẽ time code
if (tcCur.hour > 23)
{
tcCur.hour -= 24;
}
string tc = tcCur.ToHDString();
tc = tc.Substring(0, m_LengthRulerText);
gp.DrawString(tc, m_RulerFont, Brushes.Black, xB - 7, yB - 12 - gp.MeasureString(tc, m_RulerFont).Height);
tcCur += m_RulerSpacing;
// Vẽ vạch nhỏ
for (int j = 1; j < 10; j++)
{
int xN = i + j * m_RulerUnit / 10, yN = pnRuler.Height;
gp.DrawLine(pen, xN, yN, xN, yN - 5);
}
}
gp.Dispose();
pnRuler.BackgroundImage = bmp;
}