| public abstract DrawLine ( float x1, float y1, float x2, float y2 ) : void | ||
| x1 | float | |
| y1 | float | |
| x2 | float | |
| y2 | float | |
| return | void | |
internal void PaintDecoration(Canvas g, RectangleF rectangle, bool isFirst, bool isLast)
{
float y = 0f;
switch (this.TextDecoration)
{
default:
return;
case Css.CssTextDecoration.Underline:
{
//TODO: correct this ...
//var h = g.MeasureString(" ", ActualFont).Height;
//float desc = FontsUtils.GetDescentPx(ActualFont);
//y = (float)Math.Round(rectangle.Top + h - desc + 0.5);
RequestFont afont = ResolvedFont;
//PixelFarm.Drawing.Fonts.ActualFont ff = afont.ActualFont;
var h = afont.SizeInPixels;
float desc = (float)afont.DescentInPixels;// fontInfo.DescentPx;
y = (float)Math.Round(rectangle.Top + h - desc);
}
break;
case Css.CssTextDecoration.LineThrough:
{
y = rectangle.Top + rectangle.Height / 2f;
}
break;
case Css.CssTextDecoration.Overline:
{
y = rectangle.Top;
}
break;
}
//y -= ActualPaddingBottom - ActualBorderBottomWidth;
y -= (ActualPaddingBottom + ActualBorderBottomWidth);
float x1 = rectangle.X;
if (isFirst)
{
x1 += ActualPaddingLeft + ActualBorderLeftWidth;
}
float x2 = rectangle.Right;
if (isLast)
{
x2 -= ActualPaddingRight + ActualBorderRightWidth;
}
var prevColor = g.StrokeColor;
g.StrokeColor = ActualColor;
g.DrawLine(x1, y, x2, y);
g.StrokeColor = prevColor;
}
public override void DrawChildContent(Canvas canvas, Rectangle updateArea)
{
//GridCell leftTopGridItem = GetGridItemByPosition(updateArea.Left, updateArea.Top);
//if (leftTopGridItem == null)
//{
// return;
//}
//GridCell rightBottomGridItem = GetGridItemByPosition(updateArea.Right, updateArea.Bottom);
//if (rightBottomGridItem == null)
//{
// return;
//}
//TODO: temp fixed, review here again,
GridCell leftTopGridItem = this.GetCell(0, 0);
if (leftTopGridItem == null)
{
return;
}
GridCell rightBottomGridItem = this.GetCell(this.RowCount - 1, this.ColumnCount - 1);
if (rightBottomGridItem == null)
{
return;
}
this.BeginDrawingChildContent();
GridColumn startColumn = leftTopGridItem.column;
GridColumn currentColumn = startColumn;
GridRow startRow = leftTopGridItem.row;
GridColumn stopColumn = rightBottomGridItem.column.NextColumn;
GridRow stopRow = rightBottomGridItem.row.NextRow;
int startRowId = startRow.RowIndex;
int stopRowId = 0;
if (stopRow == null)
{
stopRowId = gridRows.Count;
}
else
{
stopRowId = stopRow.RowIndex;
}
int n = 0;
var prevColor = canvas.StrokeColor;
canvas.StrokeColor = Color.Gray;
//canvas.DrawLine(0, 0, 100, 100);
//canvas.DrawLine(0, 100, 100, 0);
//if (startRowId > 0)
//{
// Console.WriteLine(startRowId);
//}
//canvas.DrawRectangle(Color.Red, updateArea.Left, updateArea.Top, updateArea.Width, updateArea.Height);
do
{
GridCell startGridItemInColumn = currentColumn.GetCell(startRowId);
GridCell stopGridItemInColumn = currentColumn.GetCell(stopRowId - 1);
//draw vertical line
canvas.DrawLine(
startGridItemInColumn.Right,
startGridItemInColumn.Y,
stopGridItemInColumn.Right,
stopGridItemInColumn.Bottom);
if (n == 0)
{
//draw horizontal line
int horizontalLineWidth = rightBottomGridItem.Right - startGridItemInColumn.X;
for (int i = startRowId; i < stopRowId; i++)
{
GridCell gridItem = currentColumn.GetCell(i);
int x = gridItem.X;
int gBottom = gridItem.Bottom;
canvas.DrawLine(
x, gBottom,
x + horizontalLineWidth, gBottom);
}
n = 1;
}
currentColumn = currentColumn.NextColumn;
} while (currentColumn != stopColumn);
canvas.StrokeColor = prevColor;
currentColumn = startColumn;
//----------------------------------------------------------------------------
do
{
for (int i = startRowId; i < stopRowId; i++)
{
GridCell gridItem = currentColumn.GetCell(i);
if (gridItem != null && gridItem.HasContent)
{
int x = gridItem.X;
int y = gridItem.Y;
canvas.OffsetCanvasOrigin(x, y);
updateArea.Offset(-x, -y);
var renderContent = gridItem.ContentElement as RenderElement;
if (renderContent != null)
{
if (canvas.PushClipAreaRect(gridItem.Width, gridItem.Height, ref updateArea))
{
renderContent.DrawToThisCanvas(canvas, updateArea);
}
canvas.PopClipAreaRect();
}
canvas.OffsetCanvasOrigin(-x, -y);
updateArea.Offset(x, y);
}
#if DEBUG
else
{
canvas.DrawText(new char[] { '.' }, gridItem.X, gridItem.Y);
}
#endif
}
currentColumn = currentColumn.NextColumn;
} while (currentColumn != stopColumn);
this.FinishDrawingChildContent();
}