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Diffstat (limited to 'perllib/FixMyStreet/Map.pm')
| -rw-r--r-- | perllib/FixMyStreet/Map.pm | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/perllib/FixMyStreet/Map.pm b/perllib/FixMyStreet/Map.pm new file mode 100644 index 000000000..c3608b390 --- /dev/null +++ b/perllib/FixMyStreet/Map.pm @@ -0,0 +1,296 @@ +#!/usr/bin/perl +# +# FixMyStreet:Map +# Adding the ability to have different maps on FixMyStreet. +# +# Copyright (c) 2010 UK Citizens Online Democracy. All rights reserved. +# Email: matthew@mysociety.org; WWW: http://www.mysociety.org/ + +package FixMyStreet::Map; + +use strict; +use LWP::Simple; + +use Problems; +use Cobrand; +use mySociety::Config; +use mySociety::Gaze; +use mySociety::GeoUtil; +use mySociety::Locale; +use mySociety::Web qw(ent NewURL); + +use constant TILE_WIDTH => mySociety::Config::get('TILES_WIDTH'); +use constant TIF_SIZE_M => mySociety::Config::get('TILES_TIFF_SIZE_METRES'); +use constant TIF_SIZE_PX => mySociety::Config::get('TILES_TIFF_SIZE_PIXELS'); +use constant SCALE_FACTOR => TIF_SIZE_M / (TIF_SIZE_PX / TILE_WIDTH); + +# display_map Q PARAMS +# PARAMS include: +# X,Y is bottom left tile of 2x2 grid +# TYPE is 1 if the map is clickable, 2 if clickable and has a form upload, +# 0 if not clickable +# PINS is HTML of pins to show +# PX,PY are coordinates of pin +# PRE/POST are HTML to show above/below map +sub display_map { + my ($q, %params) = @_; + $params{pins} ||= ''; + $params{pre} ||= ''; + $params{post} ||= ''; + my $mid_point = TILE_WIDTH; # Map is 2 TILE_WIDTHs in size, square. + if ($q->{site} eq 'barnet') { # Map is c. 380px wide + $mid_point = 189; + } + my $px = defined($params{px}) ? $mid_point - $params{px} : 0; + my $py = defined($params{py}) ? $mid_point - $params{py} : 0; + my $x = int($params{x})<=0 ? 0 : $params{x}; + my $y = int($params{y})<=0 ? 0 : $params{y}; + my $url = mySociety::Config::get('TILES_URL'); + my $tiles_url = $url . ($x-1) . '-' . $x . ',' . ($y-1) . '-' . $y . '/RABX'; + my $tiles = LWP::Simple::get($tiles_url); + return '<div id="map_box"> <div id="map"><div id="drag">' . _("Unable to fetch the map tiles from the tile server.") . '</div></div></div><div id="side">' if !$tiles; + my $tileids = RABX::unserialise($tiles); + my $tl = ($x-1) . '.' . $y; + my $tr = $x . '.' . $y; + my $bl = ($x-1) . '.' . ($y-1); + my $br = $x . '.' . ($y-1); + return '<div id="side">' if (!$tileids->[0][0] || !$tileids->[0][1] || !$tileids->[1][0] || !$tileids->[1][1]); + my $tl_src = $url . $tileids->[0][0]; + my $tr_src = $url . $tileids->[0][1]; + my $bl_src = $url . $tileids->[1][0]; + my $br_src = $url . $tileids->[1][1]; + + my $out = ''; + my $cobrand = Page::get_cobrand($q); + my $root_path_js = Cobrand::root_path_js($cobrand, $q); + my $cobrand_form_elements = Cobrand::form_elements($cobrand, 'mapForm', $q); + my $img_type; + my $form_action = Cobrand::url($cobrand, '', $q); + if ($params{type}) { + my $encoding = ''; + $encoding = ' enctype="multipart/form-data"' if ($params{type}==2); + my $pc = $q->param('pc') || ''; + my $pc_enc = ent($pc); + $out .= <<EOF; +<form action="$form_action" method="post" name="mapForm" id="mapForm"$encoding> +<input type="hidden" name="submit_map" value="1"> +<input type="hidden" name="x" id="formX" value="$x"> +<input type="hidden" name="y" id="formY" value="$y"> +<input type="hidden" name="pc" value="$pc_enc"> +$cobrand_form_elements +EOF + $img_type = '<input type="image"'; + } else { + $img_type = '<img'; + } + my $imgw = TILE_WIDTH . 'px'; + my $tile_width = TILE_WIDTH; + my $tile_type = mySociety::Config::get('TILES_TYPE'); + $out .= <<EOF; +<script type="text/javascript"> +$root_path_js +var fixmystreet = { + 'x': $x - 3, + 'y': $y - 3, + 'start_x': $px, + 'start_y': $py, + 'tile_type': '$tile_type', + 'tilewidth': $tile_width, + 'tileheight': $tile_width +}; +</script> +<div id="map_box"> +$params{pre} + <div id="map"><div id="drag"> + $img_type alt="NW map tile" id="t2.2" name="tile_$tl" src="$tl_src" style="top:0px; left:0;">$img_type alt="NE map tile" id="t2.3" name="tile_$tr" src="$tr_src" style="top:0px; left:$imgw;"><br>$img_type alt="SW map tile" id="t3.2" name="tile_$bl" src="$bl_src" style="top:$imgw; left:0;">$img_type alt="SE map tile" id="t3.3" name="tile_$br" src="$br_src" style="top:$imgw; left:$imgw;"> + <div id="pins">$params{pins}</div> + </div> +EOF + if (Cobrand::show_watermark($cobrand) && mySociety::Config::get('TILES_TYPE') ne 'streetview') { + $out .= '<div id="watermark"></div>'; + } + $out .= compass($q, $x, $y); + my $copyright; + if (mySociety::Config::get('TILES_TYPE') eq 'streetview') { + $copyright = _('Map contains Ordnance Survey data © Crown copyright and database right 2010.'); + } else { + $copyright = _('© Crown copyright. All rights reserved. Ministry of Justice 100037819 2008.'); + } + $out .= <<EOF; + </div> + <p id="copyright">$copyright</p> +$params{post} +EOF + $out .= '</div>'; + $out .= '<div id="side">'; + return $out; +} + +sub display_map_end { + my ($type) = @_; + my $out = '</div>'; + $out .= '</form>' if ($type); + return $out; +} + +sub display_pin { + my ($q, $px, $py, $col, $num) = @_; + $num = '' if !$num || $num > 9; + my $host = Page::base_url_with_lang($q, undef); + my %cols = (red=>'R', green=>'G', blue=>'B', purple=>'P'); + my $out = '<img class="pin" src="' . $host . '/i/pin' . $cols{$col} + . $num . '.gif" alt="' . _('Problem') . '" style="top:' . ($py-59) + . 'px; left:' . ($px) . 'px; position: absolute;">'; + return $out unless $_ && $_->{id} && $col ne 'blue'; + my $cobrand = Page::get_cobrand($q); + my $url = Cobrand::url($cobrand, NewURL($q, -retain => 1, + -url => '/report/' . $_->{id}, + pc => undef, + x => undef, + y => undef, + sx => undef, + sy => undef, + all_pins => undef, + no_pins => undef), $q); + $out = '<a title="' . ent($_->{title}) . '" href="' . $url . '">' . $out . '</a>'; + return $out; +} + +sub map_pins { + my ($q, $x, $y, $sx, $sy, $interval) = @_; + + my $pins = ''; + my $min_e = FixMyStreet::Map::tile_to_os($x-3); # Extra space to left/below due to rounding, I think + my $min_n = FixMyStreet::Map::tile_to_os($y-3); + my $mid_e = FixMyStreet::Map::tile_to_os($x); + my $mid_n = FixMyStreet::Map::tile_to_os($y); + my $max_e = FixMyStreet::Map::tile_to_os($x+2); + my $max_n = FixMyStreet::Map::tile_to_os($y+2); + my $cobrand = Page::get_cobrand($q); + # list of problems aoround map can be limited, but should show all pins + my $around_limit = Cobrand::on_map_list_limit($cobrand); + my $around_map; + my $around_map_list = Problems::around_map($min_e, $max_e, $min_n, $max_n, $interval, $around_limit); + if ($around_limit) { + $around_map = Problems::around_map($min_e, $max_e, $min_n, $max_n, $interval, undef); + } else { + $around_map = $around_map_list; + } + my @ids = (); + foreach (@$around_map_list) { + push(@ids, $_->{id}); + } + foreach (@$around_map) { + my $px = FixMyStreet::Map::os_to_px($_->{easting}, $sx); + my $py = FixMyStreet::Map::os_to_px($_->{northing}, $sy, 1); + my $col = $_->{state} eq 'fixed' ? 'green' : 'red'; + $pins .= FixMyStreet::Map::display_pin($q, $px, $py, $col); + } + + my $dist; + mySociety::Locale::in_gb_locale { + my ($lat, $lon) = mySociety::GeoUtil::national_grid_to_wgs84($mid_e, $mid_n, 'G'); + $dist = mySociety::Gaze::get_radius_containing_population($lat, $lon, 200000); + }; + $dist = int($dist*10+0.5)/10; + + my $limit = 20; # - @$current_map; + my $nearby = Problems::nearby($dist, join(',', @ids), $limit, $mid_e, $mid_n, $interval); + foreach (@$nearby) { + my $px = FixMyStreet::Map::os_to_px($_->{easting}, $sx); + my $py = FixMyStreet::Map::os_to_px($_->{northing}, $sy, 1); + my $col = $_->{state} eq 'fixed' ? 'green' : 'red'; + $pins .= FixMyStreet::Map::display_pin($q, $px, $py, $col); + } + + return ($pins, $around_map_list, $nearby, $dist); +} + +sub compass ($$$) { + my ($q, $x, $y) = @_; + my @compass; + for (my $i=$x-1; $i<=$x+1; $i++) { + for (my $j=$y-1; $j<=$y+1; $j++) { + $compass[$i][$j] = NewURL($q, x=>$i, y=>$j); + } + } + my $recentre = NewURL($q); + my $host = Page::base_url_with_lang($q, undef); + return <<EOF; +<table cellpadding="0" cellspacing="0" border="0" id="compass"> +<tr valign="bottom"> +<td align="right"><a rel="nofollow" href="${compass[$x-1][$y+1]}"><img src="$host/i/arrow-northwest.gif" alt="NW" width=11 height=11></a></td> +<td align="center"><a rel="nofollow" href="${compass[$x][$y+1]}"><img src="$host/i/arrow-north.gif" vspace="3" alt="N" width=13 height=11></a></td> +<td><a rel="nofollow" href="${compass[$x+1][$y+1]}"><img src="$host/i/arrow-northeast.gif" alt="NE" width=11 height=11></a></td> +</tr> +<tr> +<td><a rel="nofollow" href="${compass[$x-1][$y]}"><img src="$host/i/arrow-west.gif" hspace="3" alt="W" width=11 height=13></a></td> +<td align="center"><a rel="nofollow" href="$recentre"><img src="$host/i/rose.gif" alt="Recentre" width=35 height=34></a></td> +<td><a rel="nofollow" href="${compass[$x+1][$y]}"><img src="$host/i/arrow-east.gif" hspace="3" alt="E" width=11 height=13></a></td> +</tr> +<tr valign="top"> +<td align="right"><a rel="nofollow" href="${compass[$x-1][$y-1]}"><img src="$host/i/arrow-southwest.gif" alt="SW" width=11 height=11></a></td> +<td align="center"><a rel="nofollow" href="${compass[$x][$y-1]}"><img src="$host/i/arrow-south.gif" vspace="3" alt="S" width=13 height=11></a></td> +<td><a rel="nofollow" href="${compass[$x+1][$y-1]}"><img src="$host/i/arrow-southeast.gif" alt="SE" width=11 height=11></a></td> +</tr> +</table> +EOF +} + +# P is easting or northing +# C is centre tile reference of displayed map +sub os_to_px { + my ($p, $c, $invert) = @_; + return tile_to_px(os_to_tile($p), $c, $invert); +} + +# Convert tile co-ordinates to pixel co-ordinates from top left of map +# C is centre tile reference of displayed map +sub tile_to_px { + my ($p, $c, $invert) = @_; + $p = TILE_WIDTH * ($p - $c + 1); + $p = 2 * TILE_WIDTH - $p if $invert; + $p = int($p + .5 * ($p <=> 0)); + return $p; +} + +# Tile co-ordinates are linear scale of OS E/N +# Will need more generalising when more zooms appear +sub os_to_tile { + return $_[0] / SCALE_FACTOR; +} +sub tile_to_os { + return int($_[0] * SCALE_FACTOR + 0.5); +} + +sub click_to_tile { + my ($pin_tile, $pin, $invert) = @_; + $pin -= TILE_WIDTH while $pin > TILE_WIDTH; + $pin += TILE_WIDTH while $pin < 0; + $pin = TILE_WIDTH - $pin if $invert; # image submits measured from top down + return $pin_tile + $pin / TILE_WIDTH; +} + +sub os_to_px_with_adjust { + my ($q, $easting, $northing, $in_x, $in_y) = @_; + + my $x = FixMyStreet::Map::os_to_tile($easting); + my $y = FixMyStreet::Map::os_to_tile($northing); + my $x_tile = $in_x || int($x); + my $y_tile = $in_y || int($y); + my $px = FixMyStreet::Map::os_to_px($easting, $x_tile); + my $py = FixMyStreet::Map::os_to_px($northing, $y_tile, 1); + if ($q->{site} eq 'barnet') { # Map is 380px + if ($py > 380) { + $y_tile--; + $py = FixMyStreet::Map::os_to_px($northing, $y_tile, 1); + } + if ($px > 380) { + $x_tile++; + $px = FixMyStreet::Map::os_to_px($easting, $x_tile); + } + } + return ($x, $y, $x_tile, $y_tile, $px, $py); +} + +1; |