private void CreateSecondMark(int scrollBarWid)
{
int w = scrollBarWid - 1;
int h = scrollBarWid - 2;
UnsafeBitmap b = new UnsafeBitmap(w, h);
b.LockBitmap();
FormUtil.FillShadedRectangle(b, w, h);
UnsafeBitmap bh = b.Lighter();
UnsafeBitmap bp = b.Darker();
b.UnlockBitmap();
bh.UnlockBitmap();
bp.UnlockBitmap();
secondMark = b.Bitmap;
secondMark.MakeTransparent();
secondMarkHighlight = bh.Bitmap;
secondMarkHighlight.MakeTransparent();
secondMarkPress = bp.Bitmap;
secondMarkPress.MakeTransparent();
}
protected void PaintOnGraphicsBitmap(IGraphics g, int width, int height)
{
if (backBuffer == null || scatterPlot == null) {
return;
}
UnsafeBitmap copyBackBuffer = new UnsafeBitmap(backBuffer);
copyBackBuffer.LockBitmap();
// selected data-points
foreach (int s in scatterPlot.Selection) {
double[] w = scatterPlot.GetDataAt(s);
if (w.Length > 0){
double x = w[0];
double y = w[1];
SymbolProperties gx = GetPointProperties != null ? GetPointProperties(s) : defaultSymbol;
SymbolType symbolType = SymbolType.allSymbols[gx.Type];
int symbolSize = gx.Size;
if (symbolSize > 0){
int[] pathX;
int[] pathY;
symbolType.GetPath(symbolSize, out pathX, out pathY);
copyBackBuffer.DrawPath(SelectionColor, ModelToViewX(x, width), ModelToViewY(y, height), pathX, pathY);
}
}
}
copyBackBuffer.UnlockBitmap();
// labels
ScatterPlotLabelMode labelMode = scatterPlot.GetLabelMode();
bool cutLabels = scatterPlot.CutLabels;
if (labelMode == ScatterPlotLabelMode.All && scatterPlot.HasLabels) {
Font font = new Font("Arial", scatterPlot.FontSize, scatterPlot.FontStyle);
for (;;){
double[] x;
double[] y;
double[] z;
string[] labels;
int index;
try{
scatterPlot.GetData(out x, out y, out z, out labels, out index);
} catch (IndexOutOfRangeException){
break;
}
if (x == null){
break;
}
SymbolProperties gx = GetPointProperties != null ? GetPointProperties(index) : defaultSymbol;
for (int i = 0; i < x.Length; i++){
if (labelMode == ScatterPlotLabelMode.All || scatterPlot.IsSelected(i)) {
int ix = ModelToViewX(x[i], width);
int iy = ModelToViewY(y[i], height);
Color c;
if (z != null && colorScale != null){
c = colorScale.GetColor(z[i]);
} else{
c = gx.Color;
}
Brush b = new SolidBrush(c);
if (ix >= 0 && iy >= 0 && ix < width && iy < height){
if (labels[i] != null){
string s = labels[i];
if (cutLabels){
if (s.Contains(";")){
s = s.Substring(0, s.IndexOf(';'));
}
}
copyBackBuffer.DrawString(s, font, b, ix, iy);
}
}
}
}
}
scatterPlot.Reset();
}
if (labelMode == ScatterPlotLabelMode.Selected && scatterPlot.HasLabels) {
Brush br = new SolidBrush(SelectionColor);
Font font = new Font("Arial", scatterPlot.FontSize, scatterPlot.FontStyle);
foreach (int s in scatterPlot.Selection) {
double[] w = scatterPlot.GetDataAt(s);
string label = scatterPlot.GetLabelAt(s);
double x = w[0];
double y = w[1];
int ix = ModelToViewX(x, width);
int iy = ModelToViewY(y, height);
if (ix >= 0 && iy >= 0 && ix < width && iy < height){
if (label != null){
if (cutLabels){
if (label.Contains(";")){
label = label.Substring(0, label.IndexOf(';'));
}
}
copyBackBuffer.DrawString(label, font, br, ix, iy);
}
}
}
}
// draw the image
g.DrawImageUnscaled(copyBackBuffer.Bitmap, 0, 0);
copyBackBuffer.Dispose();
g.SmoothingMode = SmoothingMode.AntiAlias;
DrawPolygons(g, width, height);
if (drawFunctions != null){
drawFunctions(g, width, height, ModelToViewX, ModelToViewY, ViewToModelX, ViewToModelY);
}
g.SmoothingMode = SmoothingMode.Default;
}
private void CreateBar(int scrollBarWid, int width)
{
int w = CalcBarSize(width);
int h = scrollBarWid - 2;
UnsafeBitmap b = new UnsafeBitmap(w, h);
b.LockBitmap();
FormUtil.FillShadedRectangle(b, w, h);
UnsafeBitmap bh = b.Lighter();
UnsafeBitmap bp = b.Darker();
b.UnlockBitmap();
bh.UnlockBitmap();
bp.UnlockBitmap();
bar = b.Bitmap;
bar.MakeTransparent();
barHighlight = bh.Bitmap;
barHighlight.MakeTransparent();
barPress = bp.Bitmap;
barPress.MakeTransparent();
}
protected internal override void OnPaint(IGraphics g, int width, int height)
{
if (width <= 0 || height <= 0){
return;
}
if (!Visible){
return;
}
Brush foreBrush = new SolidBrush(ForeColor);
if (paintBackground && IsInitialized() && !IsDragging()){
g.DrawString("Loading...", Font, foreBrush, width/2 - 20, height/2 - 10);
}
if (scatterPlot == null) {
return;
}
if (width != prevWidth || height != prevHeight){
InvalidateData();
}
prevHeight = height;
prevWidth = width;
if (ValuesNeedRecalc()){
if (!IsDragging()){
RecalcValues(width, height);
}
return;
}
if (backBuffer == null){
lockBackBuffer = true;
backBuffer = new UnsafeBitmap(width, height);
backBuffer.LockBitmap();
PaintOnBackBuffer(width, height);
backBuffer.UnlockBitmap();
lockBackBuffer = false;
}
vectorGraphics = !(g is CGraphics);
if (vectorGraphics){
PaintOnGraphicsVector(g, width, height);
} else{
PaintOnGraphicsBitmap(g, width, height);
}
if (indicatorX1 != -1 && indicatorX2 != -1 && indicatorY1 != -1 && indicatorY2 != -1){
g.SmoothingMode = SmoothingMode.AntiAlias;
Pen indicatorPen = new Pen(Color.Black){DashStyle = DashStyle.Dot};
switch (MouseMode){
case ScatterPlotMouseMode.Select:
case ScatterPlotMouseMode.Zoom:{
g.DrawRectangle(indicatorPen, MinIndicatorX, MinIndicatorY, DeltaIndicatorX, DeltaIndicatorY);
}
break;
}
g.SmoothingMode = SmoothingMode.Default;
}
}