| public OffsetCanvasOrigin ( int dx, int dy ) : void | ||
| dx | int | |
| dy | int | |
| return | void | |
public sealed override void CustomDrawToThisCanvas(Canvas canvas, Rectangle updateArea)
{
canvas.OffsetCanvasOrigin(-myviewportX, -myviewportY);
updateArea.Offset(myviewportX, myviewportY);
this.DrawBoxContent(canvas, updateArea);
canvas.OffsetCanvasOrigin(myviewportX, myviewportY);
updateArea.Offset(-myviewportX, -myviewportY);
}
public override void DrawChildContent(Canvas canvasPage, Rectangle updateArea)
{
if ((layerFlags & IS_LAYER_HIDDEN) != 0)
{
return;
}
this.BeginDrawingChildContent();
foreach (RenderElement child in this.GetDrawingIter())
{
if (child.IntersectsWith(ref updateArea))
{
int x = child.X;
int y = child.Y;
canvasPage.OffsetCanvasOrigin(x, y);
updateArea.Offset(-x, -y);
child.DrawToThisCanvas(canvasPage, updateArea);
canvasPage.OffsetCanvasOrigin(-x, -y);
updateArea.Offset(x, y);
}
}
this.FinishDrawingChildContent();
}
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();
}
