public CairoAdapter(System.Drawing.Graphics graphic)
{
Surface surface = new Win32Surface(graphic.GetHdc());
this.context = new Context(surface);
context.LineWidth = 2;
context.Color = new Color(1, 0, 0);
}
private void Form1_Shown(object sender, EventArgs e)
{
Debug.WriteLine("Form1_Shown");
Win32Surface = new Win32Surface(this.CreateGraphics().GetHdc());
FontContext = new Context(Win32Surface);
//CRITICAL: Format of Win32Surface and ImageSurface must be identical!
ImageSurface = new ImageSurface(Format.Rgb24, ClientSize.Width, ClientSize.Height);
BackContext = new Context(ImageSurface);
//Clear Surface2
BackContext.SetSourceColor(new Color(1,1,1));
BackContext.Operator = Operator.Source;
BackContext.Paint();
BackContext.Operator = Operator.Over;
var textFormat = DWriteCairo.CreateTextFormat(
"Arial",
FontWeight.Normal,
FontStyle.Normal,
FontStretch.Normal,
32f);
Debug.Assert(Math.Abs(textFormat.FontSize - 32f) < 0.0001);
const string s = "Hello World";
textLayout = DWriteCairo.CreateTextLayout(s, textFormat, 300, 40);
}
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();
}
}
}
}
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 static Cairo.Context CreateContext(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 e)
{
base.OnPaint(e);
using (Graphics1 = e.Graphics)
using (Surface1 = new Win32Surface(Graphics1.GetHdc()))
using (Context1 = new Context(Surface1))
{
if (OnPaintAction!=null)
{
OnPaintAction(Context1);
}
}
}
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;
}
private void Form1_Shown(object sender, EventArgs e)
{
Debug.WriteLine("Form1_Shown");
surface = new Win32Surface(this.CreateGraphics().GetHdc());
context = new Context(surface);
textFormat = DWriteCairo.CreateTextFormat(
"Consolas",
FontWeight.Normal,
FontStyle.Normal,
FontStretch.Normal,
12);
textFormat.TextAlignment = TextAlignment.Center;
float left, top, width, height;
// get actual size of the text
var measureLayout = DWriteCairo.CreateTextLayout(s, textFormat, 4096, 4096);
measureLayout.GetRect(out left, out top, out width, out height);
measureLayout.Dispose();
// build text context against the size and format
textLayout = DWriteCairo.CreateTextLayout(s, textFormat, (int)Math.Ceiling(width), (int)Math.Ceiling(height));
Debug.WriteLine("showing layout");
Path path = DWriteCairo.RenderLayoutToCairoPath(context, textLayout);
context.AppendPath(path);
context.Fill();
textLayout.GetRect(out left, out top, out width, out height);
textRect = new System.Drawing.RectangleF(left, top, width, height);
context.Rectangle(left, top, width, height);
context.Stroke();
context.GetTarget().Flush();
}
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 void setGraphics(System.Drawing.Graphics g)
{
Surface surface = new Win32Surface(g.GetHdc());
this.context = new Context(surface);
}
public WFCairoGraphics(System.Drawing.Graphics g, int print)
{
this.g = g;
surf = Cairo.Win32Surface.PrintingSurface(g.GetHdc());
cr = new Cairo.Context(surf);
}
public WFCairoGraphics(System.Drawing.Graphics g)
{
this.g = g;
System.Drawing.RectangleF cb = g.ClipBounds;
surf = new Cairo.Win32Surface(g.GetHdc());
cr = new Cairo.Context(surf);
cr.Rectangle(cb.X, cb.Y, cb.Width, cb.Height);
cr.Clip();
}
