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diff --git a/layout/reftests/border-image/gen-refs.py b/layout/reftests/border-image/gen-refs.py
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+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Generates tables of background images which correspond with border images for
+# creating reftests. Input is the filename containing input defined below (a subset
+# of the allowed CSS border properties). An html representation of a table is
+# output to stdout.
+#
+# Usage: python gen-refs.py input_filename
+#
+# Input must take the form (order is not important, nothing is optional, distance in order top, right, bottom, left):
+# width: p;
+# height: p;
+# border-width: p;
+# border-image-source: ...;
+# border-image-slice: p p p p;
+# note that actually border-image-slice takes numbers without px, which represent pixels anyway (or at least coords)
+# border-image-width: np np np np;
+# border-image-repeat: stretch | repeat | round;
+# border-image-outset: np np np np;
+#
+# where:
+# p ::= n'px'
+# np ::= n | p
+#
+# Assumes there is no intrinsic size for the border-image-source, so uses
+# the size of the border image area.
+
+import sys
+
+
+class Point:
+ def __init__(self, w=0, h=0):
+ self.x = w
+ self.y = h
+
+
+class Size:
+ def __init__(self, w=0, h=0):
+ self.width = w
+ self.height = h
+
+
+class Rect:
+ def __init__(self, x=0, y=0, x2=0, y2=0):
+ self.x = x
+ self.y = y
+ self.x2 = x2
+ self.y2 = y2
+
+ def width(self):
+ return self.x2 - self.x
+
+ def height(self):
+ return self.y2 - self.y
+
+
+class Props:
+ def __init__(self):
+ self.size = Size()
+
+
+class np:
+ def __init__(self, n, p):
+ self.n = n
+ self.p = p
+
+ def get_absolute(self, ref):
+ if not self.p == 0:
+ return self.p
+ return self.n * ref
+
+
+def parse_p(tok):
+ if tok[-2:] == "px":
+ return float(tok[:-2])
+ print("Whoops, not a pixel value", tok)
+
+
+def parse_np(tok):
+ if tok[-2:] == "px":
+ return np(0, float(tok[:-2]))
+ return np(float(tok), 0)
+
+
+def parse(filename):
+ f = open(filename, "r")
+ props = Props()
+ for l in f:
+ l = l.strip()
+ if not l[-1] == ";":
+ continue
+ toks = l[:-1].split()
+ if toks[0] == "border-width:":
+ props.width = parse_p(toks[1])
+ if toks[0] == "height:":
+ props.size.height = parse_p(toks[1])
+ if toks[0] == "width:":
+ props.size.width = parse_p(toks[1])
+ if toks[0] == "border-image-source:":
+ props.source = l[l.find(":") + 1 : l.rfind(";")].strip()
+ if toks[0] == "border-image-repeat:":
+ props.repeat = toks[1]
+ if toks[0] == "border-image-slice:":
+ props.slice = map(parse_p, toks[1:5])
+ if toks[0] == "border-image-width:":
+ props.image_width = map(parse_np, toks[1:5])
+ if toks[0] == "border-image-outset:":
+ props.outset = map(parse_np, toks[1:5])
+ f.close()
+ return props
+
+
+# the result of normalisation is that all sizes are in pixels and the size,
+# widths, and outset have been normalised to a size and width - the former is
+# the element's interior, the latter is the width of the drawn border.
+def normalise(props):
+ result = Props()
+ result.source = props.source
+ result.repeat = props.repeat
+ result.width = map(lambda x: x.get_absolute(props.width), props.image_width)
+ outsets = map(lambda x: x.get_absolute(props.width), props.outset)
+ result.size.width = props.size.width + 2 * props.width + outsets[1] + outsets[3]
+ result.size.height = props.size.height + 2 * props.width + outsets[0] + outsets[2]
+ result.slice = props.slice
+ for i in [0, 2]:
+ if result.slice[i] > result.size.height:
+ result.slice[i] = result.size.height
+ if result.slice[i + 1] > result.size.width:
+ result.slice[i + 1] = result.size.width
+
+ return result
+
+
+def check_parse(props):
+ if not hasattr(props, "source"):
+ print("missing border-image-source")
+ return False
+ if not hasattr(props.size, "width"):
+ print("missing width")
+ return False
+ if not hasattr(props.size, "height"):
+ print("missing height")
+ return False
+ if not hasattr(props, "width"):
+ print("missing border-width")
+ return False
+ if not hasattr(props, "image_width"):
+ print("missing border-image-width")
+ return False
+ if not hasattr(props, "slice"):
+ print("missing border-image-slice")
+ return False
+ if not hasattr(props, "repeat") or (
+ props.repeat not in ["stretch", "repeat", "round"]
+ ):
+ print("missing or incorrect border-image-repeat '" + props.repeat + "'")
+ return False
+ if not hasattr(props, "outset"):
+ print("missing border-image-outset")
+ return False
+
+ return True
+
+
+def check_normalise(props):
+ if not hasattr(props, "source"):
+ print("missing border-image-source")
+ return False
+ if not hasattr(props.size, "width"):
+ print("missing width")
+ return False
+ if not hasattr(props.size, "height"):
+ print("missing height")
+ return False
+ if not hasattr(props, "slice"):
+ print("missing border-image-slice")
+ return False
+ if not hasattr(props, "repeat") or (
+ props.repeat not in ["stretch", "repeat", "round"]
+ ):
+ print("missing or incorrect border-image-repeat '" + props.repeat + "'")
+ return False
+
+ return True
+
+
+class Tile:
+ def __init__(self):
+ self.slice = Rect()
+ self.border_width = Rect()
+
+
+# throughout, we will use arrays for nine-patches, the indices correspond thusly:
+# 0 1 2
+# 3 4 5
+# 6 7 8
+
+# Compute the source tiles' slice and border-width sizes
+def make_src_tiles():
+ tiles = [Tile() for i in range(9)]
+
+ rows = [range(3 * i, 3 * (i + 1)) for i in range(3)]
+ cols = [[i, i + 3, i + 6] for i in range(3)]
+
+ row_limits_slice = [
+ 0,
+ props.slice[3],
+ props.size.width - props.slice[1],
+ props.size.width,
+ ]
+ row_limits_width = [
+ 0,
+ props.width[3],
+ props.size.width - props.width[1],
+ props.size.width,
+ ]
+ for r in range(3):
+ for t in [tiles[i] for i in cols[r]]:
+ t.slice.x = row_limits_slice[r]
+ t.slice.x2 = row_limits_slice[r + 1]
+ t.border_width.x = row_limits_width[r]
+ t.border_width.x2 = row_limits_width[r + 1]
+
+ col_limits_slice = [
+ 0,
+ props.slice[0],
+ props.size.height - props.slice[2],
+ props.size.height,
+ ]
+ col_limits_width = [
+ 0,
+ props.width[0],
+ props.size.height - props.width[2],
+ props.size.height,
+ ]
+ for c in range(3):
+ for t in [tiles[i] for i in rows[c]]:
+ t.slice.y = col_limits_slice[c]
+ t.slice.y2 = col_limits_slice[c + 1]
+ t.border_width.y = col_limits_width[c]
+ t.border_width.y2 = col_limits_width[c + 1]
+
+ return tiles
+
+
+def compute(props):
+ tiles = make_src_tiles()
+
+ # corners scale easy
+ for t in [tiles[i] for i in [0, 2, 6, 8]]:
+ t.scale = Point(
+ t.border_width.width() / t.slice.width(),
+ t.border_width.height() / t.slice.height(),
+ )
+ # edges are by their secondary dimension
+ for t in [tiles[i] for i in [1, 7]]:
+ t.scale = Point(
+ t.border_width.height() / t.slice.height(),
+ t.border_width.height() / t.slice.height(),
+ )
+ for t in [tiles[i] for i in [3, 5]]:
+ t.scale = Point(
+ t.border_width.width() / t.slice.width(),
+ t.border_width.width() / t.slice.width(),
+ )
+ # the middle is scaled by the factors for the top and left edges
+ tiles[4].scale = Point(tiles[1].scale.x, tiles[3].scale.y)
+
+ # the size of a source tile for the middle section
+ src_tile_size = Size(
+ tiles[4].slice.width() * tiles[4].scale.x,
+ tiles[4].slice.height() * tiles[4].scale.y,
+ )
+
+ # the size of a single destination tile in the central part
+ dest_tile_size = Size()
+ if props.repeat == "stretch":
+ dest_tile_size.width = tiles[4].border_width.width()
+ dest_tile_size.height = tiles[4].border_width.height()
+ for t in [tiles[i] for i in [1, 7]]:
+ t.scale.x = t.border_width.width() / t.slice.width()
+ for t in [tiles[i] for i in [3, 5]]:
+ t.scale.y = t.border_width.height() / t.slice.height()
+ elif props.repeat == "repeat":
+ dest_tile_size = src_tile_size
+ elif props.repeat == "round":
+ dest_tile_size.width = tiles[4].border_width.width() / math.ceil(
+ tiles[4].border_width.width() / src_tile_size.width
+ )
+ dest_tile_size.height = tiles[4].border_width.height() / math.ceil(
+ tiles[4].border_width.height() / src_tile_size.height
+ )
+ for t in [tiles[i] for i in [1, 4, 7]]:
+ t.scale.x = dest_tile_size.width / t.slice.width()
+ for t in [tiles[i] for i in [3, 4, 5]]:
+ t.scale.y = dest_tile_size.height / t.slice.height()
+ else:
+ print("Whoops, invalid border-image-repeat value")
+
+ # catch overlapping slices. Its easier to deal with it here than to catch
+ # earlier and have to avoid all the divide by zeroes above
+ for t in tiles:
+ if t.slice.width() < 0:
+ t.scale.x = 0
+ if t.slice.height() < 0:
+ t.scale.y = 0
+
+ tiles_h = int(math.ceil(tiles[4].border_width.width() / dest_tile_size.width) + 2)
+ tiles_v = int(math.ceil(tiles[4].border_width.height() / dest_tile_size.height) + 2)
+
+ # if border-image-repeat: repeat, then we will later center the tiles, that
+ # means we need an extra tile for the two 'half' tiles at either end
+ if props.repeat == "repeat":
+ if tiles_h % 2 == 0:
+ tiles_h += 1
+ if tiles_v % 2 == 0:
+ tiles_v += 1
+ dest_tiles = [Tile() for i in range(tiles_h * tiles_v)]
+
+ # corners
+ corners = [
+ (0, 0),
+ (tiles_h - 1, 2),
+ (tiles_v * (tiles_h - 1), 6),
+ (tiles_v * tiles_h - 1, 8),
+ ]
+ for d, s in corners:
+ dest_tiles[d].size = Size(
+ tiles[s].scale.x * props.size.width, tiles[s].scale.y * props.size.height
+ )
+ dest_tiles[d].dest_size = Size(
+ tiles[s].border_width.width(), tiles[s].border_width.height()
+ )
+ dest_tiles[0].offset = Point(0, 0)
+ dest_tiles[tiles_h - 1].offset = Point(
+ tiles[2].border_width.width() - dest_tiles[tiles_h - 1].size.width, 0
+ )
+ dest_tiles[tiles_v * (tiles_h - 1)].offset = Point(
+ 0,
+ tiles[6].border_width.height()
+ - dest_tiles[tiles_v * (tiles_h - 1)].size.height,
+ )
+ dest_tiles[tiles_v * tiles_h - 1].offset = Point(
+ tiles[8].border_width.width() - dest_tiles[tiles_h * tiles_v - 1].size.width,
+ tiles[8].border_width.height() - dest_tiles[tiles_h * tiles_v - 1].size.height,
+ )
+
+ # horizontal edges
+ for i in range(1, tiles_h - 1):
+ dest_tiles[i].size = Size(
+ tiles[1].scale.x * props.size.width, tiles[1].scale.y * props.size.height
+ )
+ dest_tiles[(tiles_v - 1) * tiles_h + i].size = Size(
+ tiles[7].scale.x * props.size.width, tiles[7].scale.y * props.size.height
+ )
+ dest_tiles[i].dest_size = Size(
+ dest_tile_size.width, tiles[1].border_width.height()
+ )
+ dest_tiles[(tiles_v - 1) * tiles_h + i].dest_size = Size(
+ dest_tile_size.width, tiles[7].border_width.height()
+ )
+ dest_tiles[i].offset = Point(
+ -tiles[1].scale.x * tiles[1].slice.x, -tiles[1].scale.y * tiles[1].slice.y
+ )
+ dest_tiles[(tiles_v - 1) * tiles_h + i].offset = Point(
+ -tiles[7].scale.x * tiles[7].slice.x, -tiles[7].scale.y * tiles[7].slice.y
+ )
+
+ # vertical edges
+ for i in range(1, tiles_v - 1):
+ dest_tiles[i * tiles_h].size = Size(
+ tiles[3].scale.x * props.size.width, tiles[3].scale.y * props.size.height
+ )
+ dest_tiles[(i + 1) * tiles_h - 1].size = Size(
+ tiles[5].scale.x * props.size.width, tiles[5].scale.y * props.size.height
+ )
+ dest_tiles[i * tiles_h].dest_size = Size(
+ tiles[3].border_width.width(), dest_tile_size.height
+ )
+ dest_tiles[(i + 1) * tiles_h - 1].dest_size = Size(
+ tiles[5].border_width.width(), dest_tile_size.height
+ )
+ dest_tiles[i * tiles_h].offset = Point(
+ -tiles[3].scale.x * tiles[3].slice.x, -tiles[3].scale.y * tiles[3].slice.y
+ )
+ dest_tiles[(i + 1) * tiles_h - 1].offset = Point(
+ -tiles[5].scale.x * tiles[5].slice.x, -tiles[5].scale.y * tiles[5].slice.y
+ )
+
+ # middle
+ for i in range(1, tiles_v - 1):
+ for j in range(1, tiles_h - 1):
+ dest_tiles[i * tiles_h + j].size = Size(
+ tiles[4].scale.x * props.size.width,
+ tiles[4].scale.y * props.size.height,
+ )
+ dest_tiles[i * tiles_h + j].offset = Point(
+ -tiles[4].scale.x * tiles[4].slice.x,
+ -tiles[4].scale.y * tiles[4].slice.y,
+ )
+ dest_tiles[i * tiles_h + j].dest_size = dest_tile_size
+
+ # edge and middle tiles are centered with border-image-repeat: repeat
+ # we need to change the offset to take account of this and change the dest_size
+ # of the tiles at the sides of the edges if they are clipped
+ if props.repeat == "repeat":
+ diff_h = (
+ (tiles_h - 2) * dest_tile_size.width - tiles[4].border_width.width()
+ ) / 2
+ diff_v = (
+ (tiles_v - 2) * dest_tile_size.height - tiles[4].border_width.height()
+ ) / 2
+ for i in range(0, tiles_h):
+ dest_tiles[tiles_h + i].dest_size.height -= diff_v
+ dest_tiles[tiles_h + i].offset.y -= diff_v # * tiles[4].scale.y
+ dest_tiles[(tiles_v - 2) * tiles_h + i].dest_size.height -= diff_v
+ for i in range(0, tiles_v):
+ dest_tiles[i * tiles_h + 1].dest_size.width -= diff_h
+ dest_tiles[i * tiles_h + 1].offset.x -= diff_h # * tiles[4].scale.x
+ dest_tiles[(i + 1) * tiles_h - 2].dest_size.width -= diff_h
+
+ # output the table to simulate the border
+ print("<table>")
+ for i in range(tiles_h):
+ print('<col style="width: ' + str(dest_tiles[i].dest_size.width) + 'px;">')
+ for i in range(tiles_v):
+ print(
+ '<tr style="height: '
+ + str(dest_tiles[i * tiles_h].dest_size.height)
+ + 'px;">'
+ )
+ for j in range(tiles_h):
+ width = dest_tiles[i * tiles_h + j].size.width
+ height = dest_tiles[i * tiles_h + j].size.height
+ # catch any tiles with negative widths/heights
+ # this happends when the total of the border-image-slices > borde drawing area
+ if width <= 0 or height <= 0:
+ print(' <td style="background: white;"></td>')
+ else:
+ print(
+ ' <td style="background-image: '
+ + props.source
+ + "; background-size: "
+ + str(width)
+ + "px "
+ + str(height)
+ + "px; background-position: "
+ + str(dest_tiles[i * tiles_h + j].offset.x)
+ + "px "
+ + str(dest_tiles[i * tiles_h + j].offset.y)
+ + 'px;"></td>'
+ )
+ print("</tr>")
+ print("</table>")
+
+
+# start here
+args = sys.argv[1:]
+if len(args) == 0:
+ print("whoops: no source file")
+ exit(1)
+
+
+props = parse(args[0])
+if not check_parse(props):
+ print(dir(props))
+ exit(1)
+props = normalise(props)
+if not check_normalise(props):
+ exit(1)
+compute(props)