public void Draw(Graphics gr, RectangleF rect, RectangleF source, ImageAttributes attributes = null)
{
if (IsSVG)
{
// largely based on function above now. Not sure when this version is used to test it really works if source is changed
EnsureSVG();
GraphicsState state = gr.Save();
using (ISvgRenderer render = SvgRenderer.FromGraphics(gr))
{
render.TranslateTransform(rect.Left, rect.Top, MatrixOrder.Prepend);
render.ScaleTransform(rect.Width / source.Width, rect.Height / source.Height, MatrixOrder.Prepend);
render.TranslateTransform(-source.Left, -source.Top);
m_SVG.Draw(render);
}
gr.Restore(state);
//RectangleF viewbox = m_SVG.ViewBox;
//// we must prevent SVG applying any scaling as it's in the wrong sequence, and must be BEFORE the source adjustments
//// therefore we perform the output scale now: (and below m_SVG.Draw uses the viewbox size, so will apply a (1,1) scaling)
//// I think it's correct that this uses viewbox not bound (as above function) as we are implementing the SVG scaling for the viewbox ourselves now
//gr.ScaleTransform(rect.Width / viewbox.Width, rect.Height / viewbox.Height);
//gr.ScaleTransform(viewbox.Width / source.Width, viewbox.Height / source.Height);
//gr.TranslateTransform(-(source.X - viewbox.X), -(source.Y - viewbox.Y));
//m_SVG.Draw(gr, new SizeF(viewbox.Width, viewbox.Height));
//gr.DrawRectangle(Pens.LightBlue, viewbox.X, viewbox.Y, viewbox.Width, viewbox.Height);
//gr.Restore(state);
////gr.DrawRectangle(Pens.Salmon, rect.X, rect.Y, rect.Width, rect.Height);
}
else
{
gr.DrawImage(GetNetImage(), rect, source, attributes);
}
}
public void RenderRectangle(Graphics gr, SvgDocument document)
{
using (ISvgRenderer renderer = SvgRenderer.FromGraphics(gr))
{
document.RenderElement(renderer);
}
}
private void btnBegin_Click(object sender, EventArgs e)
{
//清空文本，不能给text赋值，否则颜色设置会出现问题
rtbInfo.Clear();
//检测路径合法性
if (!Directory.Exists(tbInput.Text) || !Directory.Exists(tbOutput.Text))
{
rtbInfo.SelectionColor = Color.Red;
rtbInfo.AppendText("输入路径或输出路径不存在\n");
return;
}
//准备转换工作
btnBegin.Enabled = false;
rtbInfo.SelectionColor = Color.Green;
rtbInfo.AppendText("开始转换,如无特殊需要请勿修改参数...\n");
string[] svgs = Directory.GetFiles(tbInput.Text, "*.svg");
rtbInfo.SelectionColor = Color.Black;
rtbInfo.AppendText("共读取到" + svgs.Length + "个svg文件\n");
int successCount = 0;
//开始每一次转换
for (int i = 0; i < svgs.Length; i++)
{
Bitmap bitmap = new Bitmap((int)nudWidth.Value, (int)nudHeight.Value);
Graphics graphics = Graphics.FromImage(bitmap);
//可能会出现路径问题或其他错误，记录成功个数
try
{
SvgDocument svgDocument = SvgDocument.Open(svgs[i]);
ISvgRenderer renderer = SvgRenderer.FromGraphics(graphics);
svgDocument.Width = (int)nudWidth.Value;
svgDocument.Height = (int)nudHeight.Value;
svgDocument.Draw(renderer);
bitmap.Save(tbOutput.Text + "\\" + Path.GetFileNameWithoutExtension(svgs[i]) + "." + cbFormat.Text);//怕读取顺序与原顺序不一样，所以按照原名字保存
successCount++;
rtbInfo.AppendText("第" + (i + 1) + "个转换成功\n");
}
catch
{
rtbInfo.SelectionColor = Color.Red;
rtbInfo.AppendText("第" + (i + 1) + "个转换失败");
rtbInfo.SelectionColor = Color.Black;
}
}
//转换完成，完成善后工作
rtbInfo.SelectionColor = Color.Green;
rtbInfo.AppendText("转换完成，共" + svgs.Length + "个文件，" + successCount + "个转换成功");
btnBegin.Enabled = true;
}
protected Bitmap PaintChart(DevExpress.XtraCharts.Native.Chart chart,
int width = 2000, int height = 1200, int?dpi = null)
{
if (_Chart.Diagram != null)
{
SetupDiagram(_Chart.Diagram);
}
if (dpi == null || dpi == 0)
{
dpi = DefaultDPI;
}
float scaleBitmap = dpi.Value / 300f;
float scaleSVG = scaleBitmap * 96f / 300f;
var svg = chart.CreateSvg(new Size((int)Math.Ceiling(width * scaleSVG), (int)Math.Ceiling(height * scaleSVG)));
var doc = SvgDocument.Open(svg);
doc.ShapeRendering = SvgShapeRendering.GeometricPrecision;
var bitmap = new Bitmap((int)Math.Ceiling(width * scaleBitmap), (int)Math.Ceiling(height * scaleBitmap));
bitmap.SetResolution(dpi.Value, dpi.Value);
using (var graphics = Graphics.FromImage(bitmap))
{
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
graphics.Clear(Color.White);
var renderer = SvgRenderer.FromGraphics(graphics);
renderer.SmoothingMode = SmoothingMode.HighQuality;
if (scaleSVG != 1f && scaleSVG > 0f)
{
renderer.ScaleTransform(1 / scaleSVG, 1 / scaleSVG);
}
doc.Draw(renderer);
}
return(bitmap);
}
protected virtual Bitmap PaintSankey(SankeyDiagramHostControl sankey, int?dpi = null)
{
if (dpi == null || dpi == 0)
{
dpi = DefaultDPI;
}
float scaleBitmap = dpi.Value / 300f;
float scaleSVG = 1f;
using var streamSvg = new MemoryStream();
sankey.ExportToSvg(streamSvg);
streamSvg.Seek(0, SeekOrigin.Begin);
var doc = SvgDocument.Open <SvgDocument>(streamSvg);
doc.ShapeRendering = SvgShapeRendering.GeometricPrecision;
streamSvg.Close();
var bitmap = new Bitmap((int)Math.Ceiling(sankey.Width * scaleBitmap), (int)Math.Ceiling(sankey.Height * scaleBitmap));
bitmap.SetResolution(dpi.Value, dpi.Value);
using (var graphics = Graphics.FromImage(bitmap))
{
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
graphics.Clear(Color.White);
var renderer = SvgRenderer.FromGraphics(graphics);
renderer.SmoothingMode = SmoothingMode.HighQuality;
if (scaleSVG != 1f && scaleSVG > 0f)
{
renderer.ScaleTransform(1 / scaleSVG, 1 / scaleSVG);
}
doc.Draw(renderer);
}
return(bitmap);
}
public void TestSmoothingModeRestoreForGraphics()
{
var visualElementMock = new Mock <SvgVisualElement>();
visualElementMock.Setup(_ => _.Attributes).CallBase();
var visualElement = visualElementMock.Object;
visualElement.ShapeRendering = SvgShapeRendering.Auto;
var g = Graphics.FromHwnd(IntPtr.Zero);
var renderer = SvgRenderer.FromGraphics(g);
g.SmoothingMode = SmoothingMode.AntiAlias;
visualElement.RenderElement(renderer);
Assert.That(g.SmoothingMode, Is.EqualTo(SmoothingMode.AntiAlias));
}
private Bitmap CreateSourceGraphic(SvgVisualElement element, SvgRenderer renderer)
{
if (this.sourceGraphic == null)
{
RectangleF bounds = element.Path.GetBounds();
this.sourceGraphic = new Bitmap((int)bounds.Width, (int)bounds.Height);
using (var graphics = Graphics.FromImage(this.sourceGraphic))
{
graphics.Clip = renderer.Clip;
graphics.Transform = renderer.Transform;
element.RenderElement(SvgRenderer.FromGraphics(graphics));
graphics.Save();
}
}
return(this.sourceGraphic);
}
public void Draw(Graphics gr, RectangleF rect, ImageAttributes attributes = null)
{
if (IsSVG)
{
//EnsureSVG(); // either of these following lines can be used to test function below
//Draw(gr, rect, new RectangleF(0, 0, m_SVG.Width, m_SVG.Height), attributes);
//Draw(gr, new PointF[] { rect.Location, rect.TopRight(), rect.BottomLeft() }, new RectangleF(0, 0, m_SVG.Width, m_SVG.Height), attributes);
//return;
var state = gr.Save();
using (ISvgRenderer render = SvgRenderer.FromGraphics(gr))
{
//render.Transform = gr.Transform; - redundant as it does this anyway. Doing this ...Clone might be useful so the original matrix didn't get corrupted, but safer to just store entire state anyway
render.TranslateTransform(rect.Left, rect.Top, MatrixOrder.Prepend);
render.ScaleTransform(rect.Width / m_SVG.Width, rect.Height / m_SVG.Height, MatrixOrder.Prepend);
m_SVG.Draw(render);
}
gr.Restore(state);
}
else
{
gr.DrawImage(GetNetImage(), rect, attributes);
}
}