pngtile: pngtile/render.py@e50ec4217fe6 (annotated)

92 e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	1	"""
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	2	Rendering output
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	3	"""
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	4
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	5	import os, os.path
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	6
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	7	## Settings
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	8	# width of a tile
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	9	TILE_WIDTH = 256
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	10	TILE_HEIGHT = 256
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	11
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	12	# max. output resolution to allow
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	13	MAX_PIXELS = 1920 * 1200
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	14
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	15	def dir_url (prefix, name, item) :
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	16	"""
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	17	Join together an absolute URL prefix, an optional directory name, and a directory item
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	18	"""
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	19
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	20	url = prefix
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	21
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	22	if name :
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	23	url += '/' + name
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	24
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	25	url += '/' + item
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	26
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	27	return url
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	28
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	29	def dir_list (dir_path) :
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	30	"""
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	31	Yield a series of directory items to show for the given dir
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	32	"""
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	33
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	34	# link to parent
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	35	yield '..'
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	36
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	37	for item in os.listdir(dir_path) :
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	38	path = os.path.join(dir_path, item)
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	39
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	40	# skip dotfiles
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	41	if item.startswith('.') :
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	42	continue
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	43
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	44	# show dirs
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	45	if os.path.isdir(path) :
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	46	yield item
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	47
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	48	# examine ext
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	49	base, ext = os.path.splitext(path)
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	50
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	51	# show .png files with a .cache file
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	52	if ext == '.png' and os.path.exists(base + '.cache') :
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	53	yield item
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	54
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	55	def scale_by_zoom (val, zoom) :
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	56	"""
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	57	Scale coordinates by zoom factor
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	58	"""
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	59
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	60	if zoom > 0 :
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	61	return val << zoom
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	62
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	63	elif zoom > 0 :
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	64	return val >> -zoom
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	65
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	66	else :
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	67	return val
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	68
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	69
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	70	### Render HTML data
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	71	def dir_html (prefix, name, path) :
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	72	"""
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	73	Directory index
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	74	"""
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	75
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	76	name = name.rstrip('/')
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	77
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	78	return """\
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	79	<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	80	<head>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	81	<title>Index of %(dir)s</title>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	82	<link rel="Stylesheet" type="text/css" href="%(prefix)s/static/style.css">
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	83	</head>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	84	<body>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	85	<h1>Index of %(dir)s</h1>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	86
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	87	<ul>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	88	%(listing)s
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	89	</ul>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	90	</body>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	91	</html>""" % dict(
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	92	prefix = prefix,
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	93	dir = '/' + name,
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	94
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	95	listing = "\n".join(
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	96	# <li> link
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	97	"""<li><a href="%(url)s">%(name)s</a></li>""" % dict(
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	98	# URL to dir
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	99	url = dir_url(prefix, name, item),
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	100
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	101	# item name
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	102	name = item,
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	103	) for item in dir_list(path)
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	104	),
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	105	)
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	106
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	107	def img_html (prefix, name, image) :
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	108	"""
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	109	HTML for image
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	110	"""
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	111
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	112	# a little slow, but not so bad - two stats(), heh
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	113	info = image.info()
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	114	img_width, img_height = info['img_width'], info['img_height']
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	115
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	116	return """\
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	117	<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	118	<head>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	119	<title>%(title)s</title>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	120	<script src="%(prefix)s/static/prototype.js" type="text/javascript"></script>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	121	<script src="%(prefix)s/static/dragdrop.js" type="text/javascript"></script>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	122	<script src="%(prefix)s/static/builder.js" type="text/javascript"></script>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	123	<script src="%(prefix)s/static/tiles2.js" type="text/javascript"></script>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	124	<link rel="Stylesheet" type="text/css" href="%(prefix)s/static/style.css">
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	125	</head>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	126	<body>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	127	<div id="wrapper">
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	128	<div id="viewport" style="width: 100%%; height: 100%%">
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	129	<div class="overlay">
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	130	<input type="button" id="btn-zoom-in" value="Zoom In" />
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	131	<input type="button" id="btn-zoom-out" value="Zoom Out" />
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	132	<a class="link" id="lnk-image" href="#"></a>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	133	</div>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	134
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	135	<div class="substrate"></div>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	136
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	137	<div class="background">
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	138	Loading...
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	139	</div>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	140	</div>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	141	</div>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	142
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	143	<script type="text/javascript">
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	144	var tile_source = new Source("%(tile_url)s", %(tile_width)d, %(tile_height)d, -4, 0, %(img_width)d, %(img_height)d);
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	145	var main = new Viewport(tile_source, "viewport");
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	146	</script>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	147	</body>
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	148	</html>""" % dict(
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	149	title = name,
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	150	prefix = prefix,
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	151	tile_url = prefix + '/' + name,
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	152
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	153	tile_width = TILE_WIDTH,
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	154	tile_height = TILE_HEIGHT,
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	155
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	156	img_width = img_width,
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	157	img_height = img_height,
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	158	)
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	159
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	160	### Render PNG Data
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	161	def img_png_tile (image, x, y, zoom) :
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	162	"""
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	163	Render given tile, returning PNG data
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	164	"""
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	165
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	166	return image.tile_mem(
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	167	TILE_WIDTH, TILE_HEIGHT,
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	168	scale_by_zoom(x, -zoom), scale_by_zoom(y, -zoom),
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	169	zoom
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	170	)
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	171
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	172	def img_png_region (image, cx, cy, zoom, width, height) :
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	173	"""
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	174	Render arbitrary tile, returning PNG data
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	175	"""
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	176
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	177	x = scale_by_zoom(cx - width / 2, -zoom)
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	178	y = scale_by_zoom(cy - height / 2, -zoom)
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	179
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	180	# safely limit
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	181	if width * height > MAX_PIXELS :
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	182	raise ValueError("Image size: %d * %d > %d" % (width, height, MAX_PIXELS))
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	183
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	184	return image.tile_mem(
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	185	width, height,
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	186	x, y,
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	187	zoom
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	188	)
e50ec4217fe6 separate non-wsgi render layer to render.png Tero Marttila <terom@fixme.fi> parents: diff changeset	189

author	Tero Marttila <terom@fixme.fi>
	Mon, 25 Jan 2010 18:46:59 +0200
changeset 92	e50ec4217fe6
child 103	1a6a6957197d
permissions	-rw-r--r--