public static void ToFile(string fileName, IEnumerable <IVisual> visuals)
{
using var doc = SKDocument.CreatePdf(fileName);
foreach (var visual in visuals)
{
var bounds = visual.Bounds;
var page = doc.BeginPage((float)bounds.Width, (float)bounds.Height);
using var context = new DrawingContext(DrawingContextHelper.WrapSkiaCanvas(page, SkiaPlatform.DefaultDpi));
ImmediateRenderer.Render(visual, context);
doc.EndPage();
}
doc.Close();
}
public void Render(IDrawingContextImpl context)
{
if (context is not ISkiaDrawingContextImpl skia)
{
return;
}
if (!skia.SkCanvas.TotalMatrix.TryInvert(out var currentInvertedTransform))
{
return;
}
// One or both dimensions has zero size.
// Skia doesnt like that.
if (_bounds.Size.AspectRatio == 0)
{
return;
}
using var backgroundSnapshot = skia.SkSurface.Snapshot();
using var preBlur =
DrawingContextHelper.CreateDrawingContext(
new Size(backgroundSnapshot.Width, backgroundSnapshot.Height), new Vector(96, 96),
skia.GrContext);
using (var filter = SKImageFilter.CreateBlur((int)_blurRadius.X, (int)_blurRadius.Y, SKShaderTileMode.Clamp))
using (var blurPaint = new SKPaint {
ImageFilter = filter
})
{
var canvas = preBlur.SkSurface.Canvas;
canvas.DrawSurface(skia.SkSurface, 0f, 0f, blurPaint);
canvas.Flush();
}
using var preBlurredSnapshot = preBlur.SkSurface.Snapshot();
using var backdropShader = SKShader.CreateImage(preBlurredSnapshot, SKShaderTileMode.Clamp,
SKShaderTileMode.Clamp, currentInvertedTransform);
using var blurred = DrawingContextHelper.CreateDrawingContext(_bounds.Size, new Vector(96, 96), skia.GrContext);
using (var blurPaint = new SKPaint {
Shader = backdropShader
})
{
blurred.SkSurface.Canvas.DrawRect(0, 0, (float)_bounds.Width, (float)_bounds.Height, blurPaint);
}
blurred.DrawTo(skia);
}
public IDrawingContextImpl CreateDrawingContext(IVisualBrushRenderer visualBrushRenderer)
{
return(DrawingContextHelper.WrapSkiaCanvas(_canvas, new Vector(_dpi, _dpi), visualBrushRenderer));
}
/// <summary>
/// ページを描画する
/// </summary>
/// <param name="dch">ドローイングコンテキスト</param>
/// <param name="arg">レポート引数</param>
protected override void DrawingPage(DrawingContextHelper dch, ReportArgument arg)
{
var titleFont = new FontInfo("Meiryo", true, 32, Brushes.Black);
// ヘッダの描画
dch.DrawText("蔵書リスト", titleFont, CM2PX(1.0d), CM2PX(1.5d));
dch.DrawText(string.Format("Page.{0}", arg.PageNo), CM2PX(26.5d), CM2PX(1.4d));
Table.HeaderColumns[0].DrawText("No", TextAlignment.Right, dch);
Table.HeaderColumns[1].DrawText("書名", TextAlignment.Left, dch);
Table.HeaderColumns[2].DrawText("著者名", TextAlignment.Left, dch);
Table.HeaderColumns[3].DrawText("出版社", TextAlignment.Left, dch);
Table.HeaderColumns[4].DrawText("カテゴリ", TextAlignment.Left, dch);
Table.HeaderColumns[5].DrawText("価格", TextAlignment.Right, dch);
Table.HeaderColumns[6].DrawText("購入日", TextAlignment.Center, dch);
Table.HeaderColumns[7].DrawText("評価点", TextAlignment.Left, dch);
// 明細の描画
Table.RowIndex = 0;
while (DataRowIndex < BookList.Count)
{
// 1ページ分明細行を印刷したらブレイク
if (Table.PageBreak)
{
break;
}
if (Table.RowIndex % 2 != 0)
{
Table.DrawRowBorder(Table.RowIndex, null, new Thickness(0.0d), Brushes.WhiteSmoke, dch);
}
var book = BookList[DataRowIndex];
Table[0].DrawText(book.Id.ToString(), TextAlignment.Right, dch);
Table[1].DrawText(book.Title, TextAlignment.Left, dch);
Table[2].DrawText(book.Author, TextAlignment.Left, dch);
Table[3].DrawText(book.Publisher, TextAlignment.Left, dch);
if (book.Category.HasValue)
{
Table[4].DrawText(AttributeUtil.GetEnumFieldDisplayName(book.Category.Value), TextAlignment.Left, dch);
}
if (book.Price.HasValue)
{
Table[5].DrawText(book.Price.Value.ToString("#,##0円"), TextAlignment.Right, dch);
}
if (book.PurchaseDate.HasValue)
{
Table[6].DrawText(book.PurchaseDate.Value.ToString("yyyy/MM/dd"), TextAlignment.Center, dch);
}
if (book.ReviewPoint.HasValue)
{
Table[7].DrawText(new String('★', book.ReviewPoint.Value), TextAlignment.Left, dch);
}
DataRowIndex++;
Table.RowIndex++;
}
// 枠線の描画
Table.DrawBorder(dch.DefaulBrush, new Thickness(1.0d), null, dch);
Table.DrawHeaderBorder(dch.DefaulBrush, new Thickness(0.0d, 0.0d, 0.0d, 1.0d), null, dch);
// 印刷すべきデータがまだあれば印刷を継続する
arg.PrintTerminate = (DataRowIndex >= BookList.Count);
}
private DrawingContextImpl CreateTarget()
{
var canvas = new SKCanvas(new SKBitmap(100, 100));
return((DrawingContextImpl)DrawingContextHelper.WrapSkiaCanvas(canvas, new Vector(96, 96)));
}
