protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
Graphics1 = e.Graphics;
Surface1 = new Win32Surface(Graphics1.GetHdc());
Context1 = new Context(Surface1);
var p1 = new PointD(10, 10);
var p2 = new PointD(100, 10);
var p3 = new PointD(100, 100);
var p4 = new PointD(10, 100);
Context1.MoveTo(p1);
Context1.LineTo(p2);
Context1.LineTo(p3);
Context1.LineTo(p4);
Context1.LineTo(p1);
Context1.ClosePath();
Context1.Fill();
Context1.MoveTo(140, 110);
Context1.SetFontSize(32);
Context1.SetSourceColor(new Color(0, 0, 0.8, 1));
Context1.ShowText("Hello Cairo!");
Graphics1.Dispose();
Context1.Dispose();
Surface1.Dispose();
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
using (System.Drawing.Graphics graphics = e.Graphics)
{
using (Win32Surface surface = new Win32Surface(graphics.GetHdc()))
{
using (Context context = new Context(surface))
{
context.LineWidth = 2.0;
context.SetSourceColor(this.bugColor);
context.MoveTo(7.0, 64.0);
context.CurveTo(1.0, 47.0, 2.0, 46.0, 9.0, 51.0);
context.MoveTo(25.0, 80.0);
context.CurveTo(10.0, 73.0, 11.0, 70.0, 14.0, 63.0);
context.MoveTo(10.0, 41.0);
context.CurveTo(2.0, 36.0, 1.0, 33.0, 1.0, 26.0);
context.LineWidth = 1.0;
context.MoveTo(1.0, 26.0);
context.CurveTo(5.0, 23.0, 7.0, 18.0, 12.0, 17.0);
context.LineTo(12.0, 14.0);
context.Stroke();
context.MoveTo(30.0, 74.0);
context.CurveTo(14.0, 64.0, 10.0, 48.0, 11.0, 46.0);
context.LineTo(10.0, 45.0);
context.LineTo(10.0, 40.0);
context.CurveTo(13.0, 37.0, 15.0, 35.0, 19.0, 34.0);
context.Stroke();
}
}
}
}
private void pnCanvas_Paint(object sender, PaintEventArgs e)
{
if (isPainting)
{
CommonGraphics lib;
System.Drawing.Graphics g = e.Graphics;
if (radioGdi.Checked)
{
lib = new GdiPlus(g);
}
else
{
Surface s = new Win32Surface(g.GetHdc());
Context c = new Context(s);
lib = new Cairo(c);
}
foreach (Shape shape in shapes)
{
shape.draw(lib);
}
diagram.draw(lib);
g.Dispose();
}
}
private void DrawAnimated(PaintEventArgs e)
{
if (backSurface == null)
{
backSurface = new ImageSurface(Format.Rgb24,
this.ClientSize.Width, this.ClientSize.Height);
}
using (Graphics graphics = e.Graphics)
{
var hdc = graphics.GetHdc();
using (Win32Surface surface = new Win32Surface(hdc))
{
//draw to image surface
Context context = new Context(backSurface);
context.LineWidth = 2.0;
context.SetSourceRGB(1, 1, 1);
context.Paint();//clear the background to white
context.SetSourceRGB(0, 0, 0);
context.MoveTo(100, 100);
context.LineTo(100 + 80 * Math.Cos(angle), 100 + 80 * Math.Sin(angle));
angle += Math.PI / 180;
context.Stroke();
//paint image surface to win32 surface
Context context1 = new Context(surface);
context1.SetSource(backSurface);
context1.Paint();
context.Dispose();
context1.Dispose();
}
graphics.ReleaseHdc();
}
}
private void DrawStatic(PaintEventArgs e)
{
using (System.Drawing.Graphics graphics = e.Graphics)
using (Win32Surface surface = new Win32Surface(graphics.GetHdc()))
using (Context context = new Context(surface))
{
//clear the background to white
context.SetSourceRGB(1, 1, 1);
context.Paint();
//stroke the bug
context.LineWidth = 2.0;
context.SetSourceColor(this.bugColor);
context.MoveTo(7.0, 64.0);
context.CurveTo(1.0, 47.0, 2.0, 46.0, 9.0, 51.0);
context.MoveTo(25.0, 80.0);
context.CurveTo(10.0, 73.0, 11.0, 70.0, 14.0, 63.0);
context.MoveTo(10.0, 41.0);
context.CurveTo(2.0, 36.0, 1.0, 33.0, 1.0, 26.0);
context.LineWidth = 1.0;
context.MoveTo(1.0, 26.0);
context.CurveTo(5.0, 23.0, 7.0, 18.0, 12.0, 17.0);
context.LineTo(12.0, 14.0);
context.Stroke();
context.MoveTo(30.0, 74.0);
context.CurveTo(14.0, 64.0, 10.0, 48.0, 11.0, 46.0);
context.LineTo(10.0, 45.0);
context.LineTo(10.0, 40.0);
context.CurveTo(13.0, 37.0, 15.0, 35.0, 19.0, 34.0);
context.Stroke();
}
}
public static Cairo.Context CreateDrawable(Gdk.Drawable drawable)
{
IntPtr x_drawable = IntPtr.Zero;
int x_off = 0, y_off = 0;
int x, y, w, h, d;
((Gdk.Window)drawable).GetGeometry(out x, out y, out w, out h, out d);
bool is_gdk_window = drawable is Gdk.Window;
if (is_gdk_window)
{
((Gdk.Window)drawable).GetInternalPaintInfo(out drawable,
out x_off, out y_off);
}
Cairo.Surface surface;
PlatformID os = Environment.OSVersion.Platform;
if (os == PlatformID.Win32Windows || os == PlatformID.Win32NT ||
os == PlatformID.Win32S || os == PlatformID.WinCE)
{
Gdk.GC gcc = new Gdk.GC(drawable);
IntPtr windc = gdk_win32_hdc_get(drawable.Handle, gcc.Handle, 0);
surface = new Win32Surface(windc);
gdk_win32_hdc_release(drawable.Handle, gcc.Handle, 0);
}
else
{
x_drawable = drawable.Handle;
IntPtr visual = gdk_drawable_get_visual(x_drawable);
IntPtr Xdisplay = gdk_x11_drawable_get_xdisplay(x_drawable);
IntPtr Xvisual = gdk_x11_visual_get_xvisual(visual);
IntPtr Xdrawable = gdk_x11_drawable_get_xid(x_drawable);
surface = new Cairo.XlibSurface(Xdisplay,
Xdrawable,
Xvisual,
w, h);
}
Cairo.Context g = new Cairo.Context(surface);
// this can be safely removed now, just keep it for a bit more
//Cairo.Context g = new Cairo.Context (
// gdk_cairo_create (x_drawable ));
if (is_gdk_window)
{
g.Translate(-(double)x_off, -(double)y_off);
}
return(g);
}
protected override void OnPaint(PaintEventArgs a)
{
IntPtr hdc = a.Graphics.GetHdc();
Win32Surface s = new Win32Surface(hdc);
Context cr = new Context(s);
draw(cr, this.Width, this.Height);
a.Graphics.ReleaseHdc(hdc);
}
protected override void OnPaint(PaintEventArgs e)
{
IntPtr hdc = e.Graphics.GetHdc();
// will only work on win32
Win32Surface s = new Win32Surface(hdc);
Context cr = new Context(s);
Snippets.InvokeSnippet(snips, name, cr, w, h);
e.Graphics.ReleaseHdc(hdc);
}
public CairoCommonGraphics(System.Drawing.Graphics g, System.Drawing.Color l, System.Drawing.Color f, bool i, int t, int w)
{
IntPtr hdc = g.GetHdc();
surface = new Win32Surface(hdc);
ct = new Context(surface);
line = l;
fill = f;
isFilled = i;
trans = t;
lineWidth = w;
ct.LineWidth = lineWidth;
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
using (Graphics1 = e.Graphics)
using (Surface1 = new Win32Surface(Graphics1.GetHdc()))
using (Context1 = new Context(Surface1))
{
if (OnPaintAction != null)
{
OnPaintAction(Context1);
}
}
}
private void saveAsPngToolStripMenuItem_Click(object sender, EventArgs e)
{
SaveFileDialog dialog = new SaveFileDialog();
dialog.Filter = "PNG|*.png";
dialog.FileName = lastSelected;
if (dialog.ShowDialog() == DialogResult.OK)
{
using (this.Graphics1 = this.CreateGraphics())
using (Surface1 = new Win32Surface(Graphics1.GetHdc()))
using (Context1 = new Context(Surface1))
{
Surface1.WriteToPng(dialog.FileName);
}
}
}
public static Cairo.Context CreateDrawable(Gdk.Drawable drawable, bool double_buffered)
{
int x, y, w, h, d;
Cairo.Surface surface;
bool needs_xlate;
((Gdk.Window)drawable).GetGeometry(out x, out y, out w, out h, out d);
PlatformID os = Environment.OSVersion.Platform;
needs_xlate = drawable is Gdk.Window && double_buffered;
if (needs_xlate)
{
((Gdk.Window)drawable).GetInternalPaintInfo(out drawable, out x, out y);
}
if (os == PlatformID.Win32Windows || os == PlatformID.Win32NT ||
os == PlatformID.Win32S || os == PlatformID.WinCE)
{
Gdk.GC gcc = new Gdk.GC(drawable);
IntPtr windc = gdk_win32_hdc_get(drawable.Handle, gcc.Handle, 0);
surface = new Win32Surface(windc);
if (double_buffered)
{
gdk_win32_hdc_release(drawable.Handle, gcc.Handle, 0);
}
}
else
{
IntPtr display = gdk_x11_drawable_get_xdisplay(drawable.Handle);
IntPtr visual = gdk_drawable_get_visual(drawable.Handle);
IntPtr xvisual = gdk_x11_visual_get_xvisual(visual);
IntPtr xdrawable = gdk_x11_drawable_get_xid(drawable.Handle);
surface = new XlibSurface(display, xdrawable, xvisual, w, h);
}
Cairo.Context ctx = new Cairo.Context(surface);
if (needs_xlate)
{
ctx.Translate(-(double)x, -(double)y);
}
return(ctx);
}
public Image Render(WebMapView mapView, out string mimeType)
{
using (Surface s = CreateImageSurface())
{
Context c = new Context(s);
c.FillRule = FillRule.EvenOdd;
c.Antialias = Antialias.Subpixel;
if (!MapView.Presenter.IsRenderingSelection)
{
SetColour(c, MapView.BackgroundColor);
}
else
{
SetColour(c, new StyleColor(0, 0, 0, 0));
}
c.FillExtents();
while (_renderQueue.Count > 0)
{
RenderObject(_renderQueue.Dequeue(), c);
}
Bitmap bmp = new Bitmap(Width, Height, PixelFormat.Format32bppArgb);
using (Graphics graphics = Graphics.FromImage(bmp))
using (Win32Surface winSurface = new Win32Surface(graphics.GetHdc()))
using (Context context = new Context(winSurface))
{
context.SetSourceRGBA(0, 0, 0, 0);
context.FillExtents();
context.SetSource(s);
context.Paint();
}
mimeType = "image/bmp";
return(bmp);
}
}
public CairoContext(System.Windows.Forms.PaintEventArgs e) : base(e)
{
Graphics1 = e.Graphics;
Surface1 = new Win32Surface(Graphics1.GetHdc());
Context1 = new Context(Surface1);
}
private void panelcontrol_MouseUp(object sender, MouseEventArgs e)
{
End.X = e.X;
End.Y = e.Y;
g = panelcontrol.CreateGraphics();
DiagramFactory fac = new DfdFactory();
ShapeInfo temp = new ShapeInfo(Start, End);
DiagramFactory fac2 = new FCFactory();
CommonGraphics gdi1 = new GdiPlusCommonGraphics(g, panelcontrol);
//chon graphic
if (GraphicType == 0)
{
gdi = gdi1;
}
else
{
try
{
Surface s = new Win32Surface(g.GetHdc());
Context c = new Context(s);
gdi = new CairoCommonGraphics(c);
}catch (System.DllNotFoundException)
{
GraphicType = 0;
MessageBox.Show("DllNotFoundException", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
//chon hinh ve
switch (ShapeType)
{
case 0:
Shape line = new Line(Start, End);
line.draw(gdi);
break;
case 1:
Shape rect = new Rect(Start, End);
rect.draw(gdi);
break;
case 2:
Shape eclip = new Eclip(Start, End);
eclip.draw(gdi);
break;
case 3:
ABlock startblock = fac.createStartBlock(temp);
startblock.draw(gdi);
break;
case 4:
ABlock input = fac.createInputBlock(temp);
input.draw(gdi);
break;
case 5:
ABlock startbl = fac2.createStartBlock(temp);
startbl.draw(gdi);
break;
case 6:
ABlock inputbl = fac2.createInputBlock(temp);
inputbl.draw(gdi);
break;
case 7:
Shape star = new Star(Start, End);
star.draw(gdi);
break;
default:
break;
}
}
