180 lines
4.2 KiB
C#
180 lines
4.2 KiB
C#
//
|
|
//
|
|
// Mono.Cairo drawing samples using GTK# as drawing surface
|
|
// Autor: Jordi Mas <jordi@ximian.com>. Based on work from Owen Taylor
|
|
// Hisham Mardam Bey <hisham@hisham.cc>
|
|
//
|
|
|
|
//
|
|
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining
|
|
// a copy of this software and associated documentation files (the
|
|
// "Software"), to deal in the Software without restriction, including
|
|
// without limitation the rights to use, copy, modify, merge, publish,
|
|
// distribute, sublicense, and/or sell copies of the Software, and to
|
|
// permit persons to whom the Software is furnished to do so, subject to
|
|
// the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be
|
|
// included in all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
//
|
|
|
|
using System;
|
|
using System.Reflection;
|
|
using System.Runtime.InteropServices;
|
|
using Cairo;
|
|
using Gtk;
|
|
|
|
public class GtkCairo
|
|
{
|
|
static DrawingArea a;
|
|
|
|
static void Main ()
|
|
{
|
|
Application.Init ();
|
|
Gtk.Window w = new Gtk.Window ("Mono.Cairo Circles demo");
|
|
|
|
a = new CairoGraphic ();
|
|
|
|
Box box = new HBox (true, 0);
|
|
box.Add (a);
|
|
w.Add (box);
|
|
w.Resize (500,500);
|
|
w.ShowAll ();
|
|
|
|
Application.Run ();
|
|
}
|
|
|
|
|
|
}
|
|
|
|
public class CairoGraphic : DrawingArea
|
|
{
|
|
static readonly double M_PI = 3.14159265358979323846;
|
|
|
|
static void draw (Cairo.Context gr, int width, int height)
|
|
{
|
|
//gr.Scale (width, height);
|
|
//gr.LineWidth = 0.04;
|
|
|
|
double X_FUZZ = 0.08;
|
|
double Y_FUZZ = 0.08;
|
|
|
|
double X_INNER_RADIUS = 0.3;
|
|
double Y_INNER_RADIUS = 0.2;
|
|
|
|
double X_OUTER_RADIUS = 0.45;
|
|
double Y_OUTER_RADIUS = 0.35;
|
|
|
|
double SPIKES = 10;
|
|
|
|
int i;
|
|
double x;
|
|
double y;
|
|
string text = "KAPOW!";
|
|
|
|
cairo_text_extents_t extents;
|
|
|
|
srand (45);
|
|
cairo_set_line_width (cr, 0.01);
|
|
|
|
for (i = 0; i < SPIKES * 2; i++) {
|
|
|
|
x = 0.5 + cos (M_PI * i / SPIKES) * X_INNER_RADIUS +
|
|
(double) rand() * X_FUZZ / RAND_MAX;
|
|
y = 0.5 + sin (M_PI * i / SPIKES) * Y_INNER_RADIUS +
|
|
(double) rand() * Y_FUZZ / RAND_MAX;
|
|
|
|
if (i == 0)
|
|
cairo_move_to (cr, x, y);
|
|
else
|
|
cairo_line_to (cr, x, y);
|
|
|
|
i++;
|
|
|
|
x = 0.5 + cos (M_PI * i / SPIKES) * X_OUTER_RADIUS +
|
|
(double) rand() * X_FUZZ / RAND_MAX;
|
|
y = 0.5 + sin (M_PI * i / SPIKES) * Y_OUTER_RADIUS +
|
|
(double) rand() * Y_FUZZ / RAND_MAX;
|
|
|
|
cairo_line_to (cr, x, y);
|
|
}
|
|
|
|
cairo_close_path (cr);
|
|
cairo_stroke (cr);
|
|
|
|
|
|
cairo_select_font_face (cr, "Sans",
|
|
CAIRO_FONT_SLANT_NORMAL,
|
|
CAIRO_FONT_WEIGHT_BOLD);
|
|
|
|
cairo_move_to (cr, x, y);
|
|
cairo_text_path (cr, text);
|
|
|
|
|
|
|
|
cairo_set_font_size (cr, 0.2);
|
|
cairo_text_extents (cr, text, &extents);
|
|
x = 0.5-(extents.width/2 + extents.x_bearing);
|
|
y = 0.5-(extents.height/2 + extents.y_bearing);
|
|
|
|
|
|
cairo_set_source_rgb (cr, 1 , 1, 0.5);
|
|
cairo_fill (cr);
|
|
|
|
cairo_move_to (cr, x, y);
|
|
cairo_text_path (cr, text);
|
|
cairo_set_source_rgb (cr, 0 , 0, 0);
|
|
cairo_stroke (cr);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
gr.Arc (xc, yc, radius, angle1, angle2);
|
|
gr.Stroke ();
|
|
|
|
/* draw helping lines */
|
|
gr.Color = new Color(1, 0.2, 0.2, 0.6);
|
|
gr.Arc (xc, yc, 0.05, 0, 2*M_PI);
|
|
gr.Fill ();
|
|
gr.LineWidth = 0.03;
|
|
gr.Arc (xc, yc, radius, angle1, angle1);
|
|
gr.LineTo (new PointD(xc, yc));
|
|
gr.Arc (xc, yc, radius, angle2, angle2);
|
|
gr.LineTo (new PointD(xc, yc));
|
|
gr.Stroke ();
|
|
|
|
}
|
|
|
|
|
|
protected override bool OnExposeEvent (Gdk.EventExpose args)
|
|
{
|
|
Gdk.Window win = args.Window;
|
|
//Gdk.Rectangle area = args.Area;
|
|
|
|
Cairo.Context g = Gdk.Context.CreateDrawable (win);
|
|
|
|
int x, y, w, h, d;
|
|
win.GetGeometry(out x, out y, out w, out h, out d);
|
|
|
|
draw (g, w, h);
|
|
return true;
|
|
}
|
|
|
|
}
|
|
|