public WpfDeviceEngine()
: base("wpf:wpf")
{
unsafe
{
Features->flags = DeviceFeatures.DoesTrueColor;
Features->default_margin = new pointf(0, 0);
Features->default_pagesize = new pointf(612, 792);
Features->default_dpi = new pointf(72, 72);
}
}
public DeviceEngine(string type)
{
this._initialize = Initialize;
this._format = Format;
this._finalize = Finalize;
unsafe
{
gvdevice_engine_t* deviceEngine = (gvdevice_engine_t*)Marshal.AllocHGlobal(Marshal.SizeOf(typeof(gvdevice_engine_t)));
_deviceEngine = new SafeMarshalHGlobalHandle((IntPtr)deviceEngine, true);
*deviceEngine = new gvdevice_engine_t();
deviceEngine->initialize = Marshal.GetFunctionPointerForDelegate(_initialize);
deviceEngine->format = Marshal.GetFunctionPointerForDelegate(_format);
deviceEngine->finalize = Marshal.GetFunctionPointerForDelegate(_finalize);
gvdevice_features_t* deviceFeatures = (gvdevice_features_t*)Marshal.AllocHGlobal(Marshal.SizeOf(typeof(gvdevice_features_t)));
_deviceFeatures = new SafeMarshalHGlobalHandle((IntPtr)deviceFeatures, true);
*deviceFeatures = new gvdevice_features_t();
deviceFeatures->flags = DeviceFeatures.None;
deviceFeatures->default_margin = new pointf(36, 36);
deviceFeatures->default_pagesize = new pointf(612, 792);
deviceFeatures->default_dpi = new pointf(72, 72);
gvplugin_installed_t* installedPluginData = (gvplugin_installed_t*)Marshal.AllocHGlobal(2 * Marshal.SizeOf(typeof(gvplugin_installed_t)));
_installedPluginData = new SafeMarshalHGlobalHandle((IntPtr)installedPluginData, true);
_engineType = new SafeMarshalHGlobalHandle(Marshal.StringToHGlobalAnsi(type), true);
installedPluginData->id = 0;
installedPluginData->type = (byte*)_engineType.DangerousGetHandle();
installedPluginData->quality = 0;
installedPluginData->engine = deviceEngine;
installedPluginData->features = deviceFeatures;
installedPluginData[1] = new gvplugin_installed_t();
}
}
protected virtual void TextParagraph(JobHandle job, pointf p, ref textpara_t text)
{
}
protected virtual void Polyline(JobHandle job, pointf[] A, int n)
{
}
protected virtual void Polygon(JobHandle job, pointf[] A, int n, bool filled)
{
}
protected virtual void LibraryShape(JobHandle job, string name, pointf[] A, int n, bool filled)
{
}
protected virtual void Ellipse(JobHandle job, pointf[] ps, bool filled)
{
}
protected virtual void BezierCurve(JobHandle job, pointf[] A, int n, bool arrow_at_start, bool arrow_at_end, bool filled)
{
}
protected override void BezierCurve(JobHandle job, pointf[] A, int n, bool arrow_at_start, bool arrow_at_end, bool filled)
{
List<PathFigure> figures = new List<PathFigure>();
if (n % 3 == 1 && n >= 4)
{
PathFigure figure = new PathFigure();
figure.StartPoint = new Point(A[0].x, A[0].y);
for (int i = 0; i < n / 3; i++)
{
Point point1 = new Point(A[3 * i + 1].x, A[3 * i + 1].y);
Point point2 = new Point(A[3 * i + 2].x, A[3 * i + 2].y);
Point point3 = new Point(A[3 * i + 3].x, A[3 * i + 3].y);
figure.Segments.Add(new BezierSegment(point1, point2, point3, true));
}
figures.Add(figure);
}
else
{
throw new NotImplementedException();
}
Path path;
path = new Path()
{
Data = new PathGeometry(figures)
};
ApplyShapeStyle(path, job, filled);
_canvas.Children.Add(path);
//PathGeometry geometry = new PathGeometry();
//PathFigure figure = new PathFigure();
//figure.Segments.Add(new BezierSegment());
//geometry.Figures.Add(new PathFigure());
//path.Data = new PathGeometry();
//PathGeometry geometry = (PathGeometry)path.Data;
}
protected override void TextParagraph(JobHandle job, pointf p, ref textpara_t text)
{
TextBlock block = new TextBlock();
block.Inlines.Add(text.Text);
block.FontFamily = new FontFamily(text.FontName);
block.FontSize = text.fontsize;
block.Margin = new Thickness(p.x - text.width / 2, p.y - text.yoffset_centerline - text.height / 2, 0, 0);
block.Height = text.height;
block.Width = text.width;
block.Foreground = GetForegroundBrush(job);
block.Background = GetBackgroundBrush(job, false);
switch ((char)text.just)
{
case 'l':
block.TextAlignment = TextAlignment.Left;
break;
case 'n':
block.TextAlignment = TextAlignment.Center;
break;
case 'r':
block.TextAlignment = TextAlignment.Right;
break;
}
_canvas.Children.Add(block);
}
protected override void Polyline(JobHandle job, pointf[] A, int n)
{
Polyline polyline = new Polyline();
for (int i = 0; i < n; i++)
polyline.Points.Add(new Point(A[i].x, A[i].y));
ApplyShapeStyle(polyline, job, false);
_canvas.Children.Add(polyline);
}
protected override void Polygon(JobHandle job, pointf[] A, int n, bool filled)
{
Polygon polygon = new Polygon();
for (int i = 0; i < n; i++)
polygon.Points.Add(new Point(A[i].x, A[i].y));
ApplyShapeStyle(polygon, job, filled);
_canvas.Children.Add(polygon);
}
protected override void LibraryShape(JobHandle job, string name, pointf[] A, int n, bool filled)
{
}
protected override void Ellipse(JobHandle job, pointf[] ps, bool filled)
{
pointf center = ps[0];
pointf corner = ps[1];
Ellipse ellipse = new Ellipse();
ellipse.Width = 2 * (corner.x - center.x);
ellipse.Height = 2 * (center.y - corner.y);
ellipse.Margin = new Thickness(2 * center.x - corner.x, corner.y, 0, 0);
ApplyShapeStyle(ellipse, job, filled);
_canvas.Children.Add(ellipse);
}