From: Emmanuel Rodriguez Date: Sun, 14 Jun 2009 17:00:47 +0000 (+0200) Subject: Increased the zoom level. X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c70e1e4f6038e5daa2f4cb3612d360075d9a5e4f;p=libchamplain Increased the zoom level. Ideally a higher zoom level would be used but clutter 0.8 doesn't cooperate too much and sends the view to antartica. In clutter 1.0 this will be fixed. In the meanwhile 8 is the higher usable zoom level at startup. --- diff --git a/bindings/perl/Champlain/examples/polygons.pl b/bindings/perl/Champlain/examples/polygons.pl new file mode 100755 index 0000000..9330978 --- /dev/null +++ b/bindings/perl/Champlain/examples/polygons.pl @@ -0,0 +1,178 @@ +#!/usr/bin/perl + +use strict; +use warnings; + +use Glib qw(TRUE FALSE); +use Clutter qw(-threads-init -init); +use Champlain; +use FindBin; +use File::Spec; + + +my $PADDING = 10; + + +exit main(); + + +sub main { + + my $stage = Clutter::Stage->get_default(); + $stage->set_size(800, 600); + + # Create the map view + my $map = Champlain::View->new(); + $map->set_scroll_mode('kinetic'); + $map->set_size(800, 600); + $stage->add($map); + + # Create the zoom buttons + my $buttons = Clutter::Group->new(); + $buttons->set_position($PADDING, $PADDING); + $stage->add($buttons); + + my $button = make_button("Zoom in", sub { + $map->zoom_in(); + }); + $buttons->add($button); + my ($width) = $button->get_size(); + + $button = make_button("Zoom out", sub { + $map->zoom_out(); + }); + $buttons->add($button); + $button->set_position($width + $PADDING, 0); + + # Draw on the map + draw_polygons($map); + + # Finish initializing the map view + $map->set_property("zoom-level", 8); + $map->center_on(45.466, -73.75); + + # Middle click to get the location in the map + $map->set_reactive(TRUE); + + $stage->show_all(); + + Clutter->main(); + + return 0; +} + + +# +# Draw some polygons over the map. +# +sub draw_polygons { + my ($map) = @_; + + my $polygon; + + # Draw a line + $polygon = Champlain::Polygon->new(); + + # Cheap approximation of Highway 10 aka "La 10" + $polygon->append_point(45.4095, -73.3197); + $polygon->append_point(45.4104, -73.2846); + $polygon->append_point(45.4178, -73.2239); + $polygon->append_point(45.4176, -73.2181); + $polygon->append_point(45.4151, -73.2126); + $polygon->append_point(45.4016, -73.1926); + $polygon->append_point(45.3994, -73.1877); + $polygon->append_point(45.4000, -73.1815); + $polygon->append_point(45.4151, -73.1218); + + $polygon->set_stroke_width(5.0); + $map->add_polygon($polygon); + + + # Draw a polygon + $polygon = Champlain::Polygon->new(); + $polygon->append_point(45.1386, -73.9196); + $polygon->append_point(45.1229, -73.8991); + $polygon->append_point(45.0946, -73.9531); + $polygon->append_point(45.1085, -73.9714); + $polygon->append_point(45.1104, -73.9761); + + $polygon->set_fill(TRUE); + $polygon->set("closed-path", TRUE); + $map->add_polygon($polygon); +} + + +# +# Creates a button and registers the given callback. The callback will be called +# each time that the button is clicked. +# +sub make_button { + my ($text, $callback) = @_; + + my $button = Clutter::Group->new(); + + my $white = Clutter::Color->new(0xff, 0xff, 0xff, 0xff); + my $button_bg = Clutter::Rectangle->new($white); + $button->add($button_bg); + $button_bg->set_opacity(0xcc); + + my $black = Clutter::Color->new(0x00, 0x00, 0x00, 0xff); + my $button_text = Clutter::Label->new("Sans 10", $text, $black); + $button->add($button_text); + my ($width, $height) = $button_text->get_size(); + + $button_bg->set_size($width + $PADDING * 2, $height + $PADDING * 2); + $button_bg->set_position(0, 0); + $button_text->set_position($PADDING, $PADDING); + + + $button->set_reactive(TRUE); + $button->signal_connect('button-release-event', $callback); + + return $button; +} + + +sub create_marker_layer { + my ($map) = @_; + my $layer = Champlain::Layer->new(); + + my $orange = Clutter::Color->new(0xf3, 0x94, 0x07, 0xbb); + my $white = Clutter::Color->new(0xff, 0xff, 0xff, 0xff); + + my $marker; + + $marker = Champlain::Marker->new_with_text("Montr\x{e9}al", "Airmole 14"); + $marker->set_position(45.528178, -73.563788); + $marker->set_reactive(TRUE); + $marker->signal_connect_after("button-release-event", \&marker_button_release_cb, $map); + $layer->add($marker); + + $marker = Champlain::Marker->new_with_text("New York", "Sans 15", $white); + $marker->set_position(40.77, -73.98); + $layer->add($marker); + + my $file = File::Spec->catfile($FindBin::Bin, 'images', 'who.png'); + eval { + $marker = Champlain::Marker->new_from_file($file); + $marker->set_position(47.130885, -70.764141); + $layer->add($marker); + }; + if (my $error = $@) { + warn "Failed to load image $file because $error"; + } + + $layer->show(); + return $layer; +} + + +sub map_view_button_release_cb { + my ($actor, $event, $map) = @_; + return FALSE unless $event->button == 2 && $event->click_count == 1; + + my ($lat, $lon) = $map->get_coords_from_event($event); + printf "Map was clicked at %f, %f\n", $lat, $lon; + return TRUE; +} +