9 my $area = Gtk2::DrawingArea->new();
11 my $PI = 3.1415926535;
22 my $lg = Cairo::RadialGradient->create($x, $y, 0, $x, $y, $rad);
23 $lg->add_color_stop_rgb(0, 0.7, 0, 0.7);
24 $lg->add_color_stop_rgb(1, 0.3, 0, 0.3);
26 $cairo->arc($x, $y, $rad, 0, $TWOPI);
27 $cairo->set_source($lg);
30 $cairo->arc($x, $y, $rad, 0, $TWOPI);
31 $cairo->set_source_rgb(1, 1, 1);
32 $cairo->set_line_width($rim);
35 $cairo->set_font_size(0.6*$rad);
36 my $xt = $cairo->text_extents('Brum');
37 $cairo->move_to($x - $xt->{'width'}/2 - $xt->{'x_bearing'},
38 $y - $xt->{'height'}/2 - $xt->{'y_bearing'});
39 $cairo->show_text("Brum");
43 my ($x1, $y1, $x2, $y2) = @_;
46 my $d = sqrt($dx*$dx + $dy*$dy);
53 $cairo->set_source_rgb(1, 1, 1);
55 $cairo->move_to($x1, $y1);
56 $cairo->line_to($x2, $y2);
57 $cairo->set_line_width(2);
60 my $ax = $x2 - $dx * $arrow_dist/$d;
61 my $ay = $y2 - $dy * $arrow_dist/$d;
64 ($adx, $ady) = ($adx * $arrow_span/$d, $ady * $arrow_span/$d);
65 $cairo->move_to($x2, $y2);
66 $cairo->line_to($ax+$adx, $ay+$ady);
67 $cairo->line_to($ax-$adx, $ay-$ady);
74 my ($lastw, $lasth, $lastd) = (-1, -1, -1);
75 my ($pixw, $pixh) = (-1, -1);
78 my $win = $area->window;
79 my $wgc = Gtk2::Gdk::GC->new($win);
80 my $alloc = $area->allocation;
81 my $w = $alloc->width;
82 my $h = $alloc->height;
83 my $d = $win->get_depth;
84 # print "Area $w x $h x $d, xx=$xx\n";
86 if (!defined($pixmap) || $lastw != $w || $lasth != $h || $lastd != $d) {
87 ($lastw, $lasth, $lastd) = ($w, $h, $d);
95 print "Resized to ${w}x${h}, pixmap size ${pixw}x${pixh}\n";
97 $pixmap = Gtk2::Gdk::Pixmap->new($win, $pixw, $pixh, $d);
98 $cairo = Gtk2::Gdk::Cairo::Context->create($pixmap);
99 $cairo->select_font_face('URW Palladio L', 'normal', 'normal');
100 my $scale = $pixw/1024;
101 $cairo->scale($scale, $scale);
105 $wgc->set_rgb_background(0);
106 $wgc->set_rgb_foreground(0);
107 $win->draw_rectangle($wgc, 1, 0, 0, $w, $h);
110 $cairo->rectangle(0, 0, 1024, 768);
111 $cairo->set_source_rgb(0, 0, 0);
115 for (my $i=0; $i<6; $i++) {
116 my $a = $TWOPI/6 * $i + $TWOPI/400*$xx;
117 my $x = int(1024/2 + 300*cos($a));
118 my $y = int(768/2 + 300*sin($a));
120 push @v, { 'x' => $x, 'y' => $y };
123 for (my $i=1; $i<6; $i++) {
124 for (my $j=0; $j<$i; $j++) {
127 draw_edge($v->{'x'}, $v->{'y'}, $w->{'x'}, $w->{'y'});
131 $win->draw_drawable($wgc, $pixmap, 0, 0, 0, 0, $pixw, $pixh);
141 $area->signal_connect("expose-event" => sub {
143 if (!defined $timer) {
144 $timer = Glib::Timeout->add(30, sub { $stopped || step(); return 1; });
147 $area->set_flags('can-focus');
148 # $area->add_events('key-press-mask');
149 $area->signal_connect('key-press-event' => sub {
151 my $k = Gtk2::Gdk::keyval_name(0, $evt->keyval);
152 print "Pressed key $k\n";
153 if ($k eq "Escape") {
155 } elsif ($k eq "space") {
156 $stopped = !$stopped;
160 my $window = Gtk2::Window->new ('toplevel');
161 $window->signal_connect ("delete-event" => sub { Gtk2->main_quit });
162 $window->set_title("Brum");
163 $window->set_wmclass("anim", "Anim");
164 $window->set_default_size(640, 480);
165 $window->add ($area);
167 #$window->fullscreen;