private void DrawList(Graphics g)
{
// подготовить массив строк displayedValuesAndButtons
displayedValuesAndButtons = new List <ChartIconDropDownRowCells>();
var linesCount = Height / cellHeight;
var linesSpare = linesCount;
if (btnUpShown)
{
linesSpare--;
}
if (btnDownShown)
{
linesSpare--;
}
rowsDisplayed = Math.Min(linesSpare, formattedValues.Count - startItemIndex);
if (btnUpShown)
{
displayedValuesAndButtons.Add(new ChartIconDropDownRowCells(ChartIconDropDownRowCells.RowType.ArrowUp));
}
for (var i = 0; i < rowsDisplayed; i++)
{
displayedValuesAndButtons.Add(formattedValues[i + startItemIndex]);
}
if (btnDownShown)
{
displayedValuesAndButtons.Add(new ChartIconDropDownRowCells(ChartIconDropDownRowCells.RowType.ArrowDown));
}
// подготовить словарь шрифтов
var fonts =
displayedValuesAndButtons.Where(c => c.cells != null).SelectMany(c => c.cells.Select(cell => cell.FontStyle ?? default(FontStyle)))
.Distinct()
.ToDictionary(
s => s, s => s == default(FontStyle) ? CellFont : new Font(CellFont, s));
// нарисовать обычные ячейки с текстом
using (var brushes = new BrushesStorage())
{
// фон
var brush = brushes.GetBrush(clCellBack);
g.FillRectangle(brush, 0, 0, Width - 1, Height - 1);
// ячейки
for (var i = 0; i < displayedValuesAndButtons.Count; i++)
{
DrawCell(g, fonts, i == selectedCellIndex, brushes, i, displayedValuesAndButtons[i], rowsDisplayed);
}
// скроллинг
scrollPadRect = null;
if (btnDownShown || btnUpShown)
{
DrawScrollBar(g, brushes);
}
}
}
private void DrawText(Graphics g, Dictionary <FontStyle, Font> fonts,
bool highlighted, BrushesStorage brushes, int y,
ChartIconDropDownCell cell, int left)
{
var top = y * cellHeight;
var cy = top + cellHeight / 2;
// вывести текст
var fontBrush = brushes.GetBrush(!highlighted
? cell.ColorFont ?? ClCellFont
: ClCellFontHl);
g.DrawString(cell.CellString, fonts[cell.FontStyle ?? default(FontStyle)], fontBrush, left, cy,
new StringFormat {
LineAlignment = StringAlignment.Center
});
}
private void DrawScrollBar(Graphics g, BrushesStorage brushes)
{
// нарисовать фон
var brushBack = brushes.GetBrush(clCellBack);
using (var pen = new Pen(ClCellFont))
{
var rect = new Rectangle(Width - ScrollBarWidth - 1, 0, ScrollBarWidth, Height - 1);
g.FillRectangle(brushBack, rect);
g.DrawRectangle(pen, rect);
// нарисовать пипочку для перетягивания
CalcScrollPadRect();
g.FillRectangle(brushBack, scrollPadRect.Value);
g.DrawRectangle(pen, scrollPadRect.Value);
}
}
private void DrawArrowUpDown(Graphics g, bool highlighted, BrushesStorage brushes, bool up, int cy,
int itemsLeft)
{
var cx = Width / 2;
const int aSzM = 3, sSzL = 3;
var points = up
? new[] { new Point(cx, cy - aSzM), new Point(cx + aSzM, cy + sSzL), new Point(cx - aSzM, cy + sSzL) }
: new[] { new Point(cx, cy + aSzM), new Point(cx + aSzM, cy - sSzL), new Point(cx - aSzM, cy - sSzL) };
var brush = brushes.GetBrush(!highlighted ? ClCellFont : ClCellFontHl);
g.FillPolygon(brush, points);
// справа подписать - сколько осталось
g.DrawString(itemsLeft.ToString(), CellFont, brush, cx + aSzM + 3, cy, new StringFormat
{
LineAlignment = StringAlignment.Center
});
}
private void DrawBack(Graphics g, bool highlighted, BrushesStorage brushes, int y)
{
if (!highlighted)
{
return;
}
// подсветить ячейку
var top = y * cellHeight;
var brush = brushes.GetBrush(clCellBackHl);
var area = new Rectangle(0, top, Width - 1, cellHeight - 1);
g.FillRectangle(brush, area);
// обвести
using (var pen = new Pen(ClCellFontHl))
{
g.DrawRectangle(pen, area);
}
}
private void DrawText(Graphics g, Dictionary<FontStyle, Font> fonts,
bool highlighted, BrushesStorage brushes, int y,
ChartIconDropDownCell cell, int left)
{
var top = y * cellHeight;
var cy = top + cellHeight / 2;
// вывести текст
var fontBrush = brushes.GetBrush(!highlighted
? cell.ColorFont ?? ClCellFont
: ClCellFontHl);
g.DrawString(cell.CellString, fonts[cell.FontStyle ?? default(FontStyle)], fontBrush, left, cy,
new StringFormat { LineAlignment = StringAlignment.Center });
}
private void DrawScrollBar(Graphics g, BrushesStorage brushes)
{
// нарисовать фон
var brushBack = brushes.GetBrush(clCellBack);
using (var pen = new Pen(ClCellFont))
{
var rect = new Rectangle(Width - ScrollBarWidth - 1, 0, ScrollBarWidth, Height - 1);
g.FillRectangle(brushBack, rect);
g.DrawRectangle(pen, rect);
// нарисовать пипочку для перетягивания
CalcScrollPadRect();
g.FillRectangle(brushBack, scrollPadRect.Value);
g.DrawRectangle(pen, scrollPadRect.Value);
}
}
private void DrawList(Graphics g)
{
// подготовить массив строк displayedValuesAndButtons
displayedValuesAndButtons = new List<ChartIconDropDownRowCells>();
var linesCount = Height / cellHeight;
var linesSpare = linesCount;
if (btnUpShown) linesSpare--;
if (btnDownShown) linesSpare--;
rowsDisplayed = Math.Min(linesSpare, formattedValues.Count - startItemIndex);
if (btnUpShown)
displayedValuesAndButtons.Add(new ChartIconDropDownRowCells(ChartIconDropDownRowCells.RowType.ArrowUp));
for (var i = 0; i < rowsDisplayed; i++)
{
displayedValuesAndButtons.Add(formattedValues[i + startItemIndex]);
}
if (btnDownShown)
displayedValuesAndButtons.Add(new ChartIconDropDownRowCells(ChartIconDropDownRowCells.RowType.ArrowDown));
// подготовить словарь шрифтов
var fonts =
displayedValuesAndButtons.Where(c => c.cells != null).SelectMany(c => c.cells.Select(cell => cell.FontStyle ?? default(FontStyle)))
.Distinct()
.ToDictionary(
s => s, s => s == default(FontStyle) ? CellFont : new Font(CellFont, s));
// нарисовать обычные ячейки с текстом
using (var brushes = new BrushesStorage())
{
// фон
var brush = brushes.GetBrush(clCellBack);
g.FillRectangle(brush, 0, 0, Width - 1, Height - 1);
// ячейки
for (var i = 0; i < displayedValuesAndButtons.Count; i++)
{
DrawCell(g, fonts, i == selectedCellIndex, brushes, i, displayedValuesAndButtons[i], rowsDisplayed);
}
// скроллинг
scrollPadRect = null;
if (btnDownShown || btnUpShown)
DrawScrollBar(g, brushes);
}
}
private void DrawBack(Graphics g, bool highlighted, BrushesStorage brushes, int y)
{
if (!highlighted) return;
// подсветить ячейку
var top = y * cellHeight;
var brush = brushes.GetBrush(clCellBackHl);
var area = new Rectangle(0, top, Width - 1, cellHeight - 1);
g.FillRectangle(brush, area);
// обвести
using (var pen = new Pen(ClCellFontHl))
{
g.DrawRectangle(pen, area);
}
}
private void DrawArrowUpDown(Graphics g, bool highlighted, BrushesStorage brushes, bool up, int cy,
int itemsLeft)
{
var cx = Width / 2;
const int aSzM = 3, sSzL = 3;
var points = up
? new[] { new Point(cx, cy - aSzM), new Point(cx + aSzM, cy + sSzL), new Point(cx - aSzM, cy + sSzL) }
: new[] { new Point(cx, cy + aSzM), new Point(cx + aSzM, cy - sSzL), new Point(cx - aSzM, cy - sSzL) };
var brush = brushes.GetBrush(!highlighted ? ClCellFont : ClCellFontHl);
g.FillPolygon(brush, points);
// справа подписать - сколько осталось
g.DrawString(itemsLeft.ToString(), CellFont, brush, cx + aSzM + 3, cy, new StringFormat
{
LineAlignment = StringAlignment.Center
});
}