//------------------------------------------------------------------------------
private void mUndo_Click(object sender, EventArgs e)
{
MultiPath mp = GetActivePath();
if (mp.Count == 0)
{
if (mp.owner.Count == 1)
{
return;
}
else
{
mp.owner.RemoveAt(mp.owner.Count - 1);
}
}
else
{
MultiPathSegment mps = mp[mp.Count - 1];
if (!mps.RemoveLast())
{
mp.RemoveLast();
}
}
UpdateBtnAndMenuState();
BmpUpdateNeeded();
}
//------------------------------------------------------------------------------
private static void DrawBezierCtrlLines(Graphics graphics,
MultiPathSegment mps, uint color)
{
int cnt = mps.Count;
if (cnt < 2) return;
Pen pen = new Pen(MakeColor(color));
GraphicsPath gpath = new GraphicsPath();
PointF[] pts = new PointF[2];
pts[0] = PathToPointF(mps[0]);
pts[1] = PathToPointF(mps[1]);
gpath.StartFigure();
gpath.AddLines(pts);
if (mps.IsValid())
if (mps.curvetype == CurveType.CubicBezier)
{
pts[0] = PathToPointF(mps[2]);
pts[1] = PathToPointF(mps[3]);
gpath.StartFigure();
gpath.AddLines(pts);
}
else
{
pts[0] = PathToPointF(mps[2]);
gpath.StartFigure();
gpath.AddLines(pts);
}
graphics.DrawPath(pen, gpath);
pen.Dispose();
gpath.Dispose();
}
//------------------------------------------------------------------------------
private void DisplayPanel_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
mNewPath_Click(sender, e);
MovingButtonIdx = -1;
}
else if (displayPanel.Cursor == Cursors.Hand)
{
MovingButtonIdx = GetButtonIndex(new IntPoint(e.X * scale, e.Y * scale), out MovingButtonSeg);
BmpUpdateNeeded();
}
else
{
//Add a new control point ...
CurveType rbPathType = GetRadiobuttonPathType();
MultiPath mp = GetActivePath();
if (mp.Count == 0)
{
mp.NewMultiPathSegment(rbPathType, new Path());
}
else if (rbPathType != GetCurrentPathType(mp))
{
if (rbPathType != GetCurrentPathType(mp))
{
Path tmp = new Path();
if (!mp.IsValid())
{
MultiPathSegment mps = mp[mp.Count - 1];
foreach (IntPoint ip in mps)
{
tmp.Add(ip);
}
mp.RemoveLast();
}
mp.NewMultiPathSegment(rbPathType, tmp);
}
}
if (!mp[mp.Count - 1].Add(new IntPoint(e.X * scale, e.Y * scale)))
{
mp.NewMultiPathSegment(rbPathType, new Path());
mp[mp.Count - 1].Add(new IntPoint(e.X * scale, e.Y * scale));
}
UpdateBtnAndMenuState();
BmpUpdateNeeded();
MovingButtonIdx = -1;
}
LeftButtonPressed = (e.Button == MouseButtons.Left);
}
//------------------------------------------------------------------------------
private static void DrawBezierCtrlLines(Graphics graphics,
MultiPathSegment mps, uint color)
{
int cnt = mps.Count;
if (cnt < 2)
{
return;
}
Pen pen = new Pen(MakeColor(color));
GraphicsPath gpath = new GraphicsPath();
PointF[] pts = new PointF[2];
pts[0] = PathToPointF(mps[0]);
pts[1] = PathToPointF(mps[1]);
gpath.StartFigure();
gpath.AddLines(pts);
if (mps.IsValid())
{
if (mps.curvetype == CurveType.CubicBezier)
{
pts[0] = PathToPointF(mps[2]);
pts[1] = PathToPointF(mps[3]);
gpath.StartFigure();
gpath.AddLines(pts);
}
else
{
pts[0] = PathToPointF(mps[2]);
gpath.StartFigure();
gpath.AddLines(pts);
}
}
graphics.DrawPath(pen, gpath);
pen.Dispose();
gpath.Dispose();
}
//------------------------------------------------------------------------------
private int GetButtonIndex(IntPoint mousePt, out MultiPathSegment mps)
{
MultiPath mp = GetActivePath();
mps = null;
if (mp.Count == 0)
{
return(-1);
}
for (int i = 0; i < mp.Count; i++)
{
for (int j = 0; j < mp[i].Count; j++)
{
if (Math.Abs(mp[i][j].X - mousePt.X) <= btnRadius &&
Math.Abs(mp[i][j].Y - mousePt.Y) <= btnRadius)
{
mps = mp[i];
return(j);
}
}
}
return(-1);
}
//------------------------------------------------------------------------------
private int GetButtonIndex(IntPoint mousePt, out MultiPathSegment mps)
{
MultiPath mp = GetActivePath();
mps = null;
if (mp.Count == 0) return -1;
for (int i = 0; i < mp.Count; i++)
for (int j = 0; j < mp[i].Count; j++)
if (Math.Abs(mp[i][j].X - mousePt.X) <= btnRadius &&
Math.Abs(mp[i][j].Y - mousePt.Y) <= btnRadius)
{
mps = mp[i];
return j;
}
return -1;
}
//------------------------------------------------------------------------------
private static void DrawButtons(Graphics graphics, MultiPath mp, bool small = false)
{
if (mp == null || mp.Count == 0)
{
return;
}
GraphicsPath gpath = new GraphicsPath(FillMode.Alternate);
SolidBrush midBrush, startBrush, endBrush;
Pen pen;
if (small)
{
midBrush = new SolidBrush(MakeColor(0xFFFFAAAA));
startBrush = new SolidBrush(MakeColor(0xFFFFAAAA));
endBrush = new SolidBrush(MakeColor(0xFFFFAAAA));
pen = new Pen(MakeColor(0xFF660000), 1.0f);
}
else
{
midBrush = new SolidBrush(MakeColor(0x20808080));
startBrush = new SolidBrush(MakeColor(0x9980FF80));
endBrush = new SolidBrush(MakeColor(0x99FA8072));
pen = new Pen(Color.Black, 1.0f);
}
foreach (MultiPathSegment mps in mp)
{
int len = mps.Count;
if (len == 0)
{
continue;
}
for (int j = 0; j < len; ++j)
{
PointF[] btnPts = MakeButton(mps[j], small);
gpath.AddPolygon(btnPts);
}
graphics.FillPath(midBrush, gpath);
graphics.DrawPath(pen, gpath);
gpath.Reset();
}
//draw the start button a shade of green ...
if (mp.Count > 0 && mp[0].Count > 0)
{
gpath.AddPolygon(MakeButton(mp[0][0], small));
graphics.FillPath(startBrush, gpath);
MultiPathSegment mps = mp[mp.Count - 1];
//draw the end button a shade of red ...
if (mps.index > 0 || mps.Count > 1)
{
gpath.Reset();
gpath.AddPolygon(MakeButton(mps[mps.Count - 1], small));
graphics.FillPath(endBrush, gpath);
}
}
//clean-up
midBrush.Dispose();
startBrush.Dispose();
endBrush.Dispose();
pen.Dispose();
gpath.Dispose();
}
