150 lines
3.8 KiB
C#
150 lines
3.8 KiB
C#
//
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//
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// Mono.Cairo drawing samples using X11 as drawing surface
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// Autor: Hisham Mardam Bey <hisham@hisham.cc>
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//
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//
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// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Reflection;
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using System.Runtime.InteropServices;
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using Cairo;
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public class X11Test
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{
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static readonly double M_PI = 3.14159265358979323846;
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static void draw (Cairo.Context gr, int width, int height)
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{
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double X_FUZZ = 0.08;
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double Y_FUZZ = 0.08;
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double X_INNER_RADIUS = 0.3;
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double Y_INNER_RADIUS = 0.2;
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double X_OUTER_RADIUS = 0.45;
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double Y_OUTER_RADIUS = 0.35;
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double SPIKES = 10;
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int i;
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double x;
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double y;
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string text = "KAPOW!";
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cairo_text_extents_t extents;
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srand (45);
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cairo_set_line_width (cr, 0.01);
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for (i = 0; i < SPIKES * 2; i++) {
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x = 0.5 + cos (M_PI * i / SPIKES) * X_INNER_RADIUS +
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(double) rand() * X_FUZZ / RAND_MAX;
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y = 0.5 + sin (M_PI * i / SPIKES) * Y_INNER_RADIUS +
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(double) rand() * Y_FUZZ / RAND_MAX;
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if (i == 0)
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cairo_move_to (cr, x, y);
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else
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cairo_line_to (cr, x, y);
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i++;
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x = 0.5 + cos (M_PI * i / SPIKES) * X_OUTER_RADIUS +
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(double) rand() * X_FUZZ / RAND_MAX;
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y = 0.5 + sin (M_PI * i / SPIKES) * Y_OUTER_RADIUS +
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(double) rand() * Y_FUZZ / RAND_MAX;
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cairo_line_to (cr, x, y);
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}
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cairo_close_path (cr);
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cairo_stroke (cr);
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cairo_select_font_face (cr, "Sans",
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CAIRO_FONT_SLANT_NORMAL,
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CAIRO_FONT_WEIGHT_BOLD);
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cairo_move_to (cr, x, y);
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cairo_text_path (cr, text);
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cairo_set_font_size (cr, 0.2);
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cairo_text_extents (cr, text, &extents);
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x = 0.5-(extents.width/2 + extents.x_bearing);
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y = 0.5-(extents.height/2 + extents.y_bearing);
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cairo_set_source_rgb (cr, 1 , 1, 0.5);
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cairo_fill (cr);
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cairo_move_to (cr, x, y);
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cairo_text_path (cr, text);
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cairo_set_source_rgb (cr, 0 , 0, 0);
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cairo_stroke (cr);
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$
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gr.Arc (xc, yc, radius, angle1, angle2);
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gr.Stroke ();
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/* draw helping lines */
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gr.Color = new Color(1, 0.2, 0.2, 0.6);
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gr.Arc (xc, yc, 0.05, 0, 2*M_PI);
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gr.Fill ();
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gr.LineWidth = 0.03;
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gr.Arc (xc, yc, radius, angle1, angle1);
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gr.LineTo (new PointD(xc, yc));
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gr.Arc (xc, yc, radius, angle2, angle2);
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gr.LineTo (new PointD(xc, yc));
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gr.Stroke ();
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}
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static void Main (string [] args)
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{
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Window win = new Window (500, 500);
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win.Show ();
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Cairo.Surface s = Cairo.Surface.CreateForXlib (win.Display,
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win.XWindow,
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X11.XDefaultVisual (win.Display, win.Screen),
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(int)win.Width, (int)win.Height);
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Cairo.Context g = new Cairo.Context (s);
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draw (g, 500, 500);
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IntPtr xev = new IntPtr ();
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while (true) {
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X11.XNextEvent (win.Display, xev);
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}
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}
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}
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