demos/GlossGradientDemo.vala

   1 /*
   2     Copyright 2009 by Hans Baier
   3     License: LGPLv2+
   4 */
   5
   6 using Gtk;
   7
   8 namespace Prolooks {
   9
  10     public class GlossDemo : DrawingArea {
  11
  12         public GlossDemo () {
  13
  14             // Set favored widget size
  15             set_size_request (500, 55);
  16                         draw.connect(on_draw);
  17         }
  18
  19         /* Widget is asked to draw itself */
  20                 public bool on_draw (Cairo.Context cr) {
  21                         Gtk.Allocation allocation;
  22                         get_allocation(out allocation);
  23
  24             set_source_color_string(cr, "#EDEDED");
  25             set_source_color(cr, gdk_color_to_rgba(style.bg[(int)Gtk.StateType.NORMAL]));
  26             cr.rectangle(0, 0, allocation.width, allocation.height);
  27             cr.fill();
  28
  29                         double padding = 5.0;
  30                         double glossbar_height = allocation.height - 2 * padding;
  31                         double glossbar_width  = (allocation.width - 2 * padding) / 5.0 ;
  32
  33             Cairo.Pattern gloss_red    = gloss_gradient_pattern(0.0, padding, 0.0, glossbar_height + padding, rgba_from_string("#D84212"), 50);
  34                         Cairo.Pattern gloss_green  = gloss_gradient_pattern(0.0, padding, 0.0, glossbar_height + padding, rgba_from_string("#237000"), 50);
  35                         Cairo.Pattern gloss_blue   = gloss_gradient_pattern(0.0, padding, 0.0, glossbar_height + padding, rgba_from_string("#0081FF"), 50);
  36                         Cairo.Pattern gloss_violet = gloss_gradient_pattern(0.0, padding, 0.0, glossbar_height + padding, rgba_from_string("#9331AB"), 50);
  37                         Cairo.Pattern gloss_gray   = gloss_gradient_pattern(0.0, padding, 0.0, glossbar_height + padding, rgba_from_string("#5B5B57"), 50);
  38
  39             cr.rectangle(padding, padding,  glossbar_width, glossbar_height);
  40             cr.set_source(gloss_blue);
  41             cr.fill();
  42
  43             cr.rectangle(padding + glossbar_width, padding,  glossbar_width, glossbar_height);
  44             cr.set_source(gloss_red);
  45             cr.fill();
  46
  47             cr.rectangle(padding + 2.0 * glossbar_width, padding,  glossbar_width, glossbar_height);
  48             cr.set_source(gloss_green);
  49             cr.fill();
  50
  51             cr.rectangle(padding + 3.0 * glossbar_width, padding,  glossbar_width, glossbar_height);
  52             cr.set_source(gloss_violet);
  53             cr.fill();
  54
  55             cr.rectangle(padding + 4.0 * glossbar_width, padding,  glossbar_width, glossbar_height);
  56             cr.set_source(gloss_gray);
  57             cr.fill();
  58
  59             return false;
  60         }
  61     }
  62
  63     static int main (string[] args) {
  64         Gtk.init (ref args);
  65         var window = new Window (WindowType.TOPLEVEL);
  66
  67         var glossDemo = new GlossDemo();
  68
  69         window.add (glossDemo);
  70         window.destroy.connect(Gtk.main_quit);
  71         window.show_all ();
  72         Gtk.main ();
  73         return 0;
  74     }
  75 } // namespace Prolooks