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mirror of synced 2024-11-24 06:20:12 +01:00

Implement define text tag, fill in some better understanding of the font tag from define text understanding.

This commit is contained in:
Jennifer Taylor 2021-05-06 19:37:05 +00:00
parent 5d26149298
commit 9ce8b79b10

View File

@ -111,7 +111,7 @@ class AP2ShapeTag(Tag):
class AP2DefineFontTag(Tag):
def __init__(self, id: int, fontname: str, xml_prefix: str, heights: List[int]) -> None:
def __init__(self, id: int, fontname: str, xml_prefix: str, heights: List[int], text_indexes: List[int]) -> None:
super().__init__(id)
# The font name is just the pretty name of the font.
@ -126,12 +126,66 @@ class AP2DefineFontTag(Tag):
# in the texture map.
self.heights = heights
# The list of text indexes are concatenated with the above prefix and height
# as a hex value to grab the actual character location in the font. It can
# be interpreted as an ascii value using chr() most of the time.
self.text_indexes = text_indexes
def as_dict(self, *args: Any, **kwargs: Any) -> Dict[str, Any]:
return {
**super().as_dict(*args, **kwargs),
'fontname': self.fontname,
'xml_prefix': self.xml_prefix,
'heights': self.heights,
'text_indexes': self.text_indexes,
}
class AP2TextChar:
def __init__(self, font_text_index: int, width: float) -> None:
# Given the parent line's font, this is an offset into the font's text indexes.
# This allows you to look up what actual character is being displayed at this
# location.
self.font_text_index = font_text_index
# This is the width of the character. Don't know why this isn't looked up in
# the font?
self.width = width
def as_dict(self, *args: Any, **kwargs: Any) -> Dict[str, Any]:
return {
'font_text_index': self.font_text_index,
'width': self.width,
}
class AP2TextLine:
def __init__(self, font_tag: Optional[int], height: int, xpos: float, ypos: float, entries: List[AP2TextChar]) -> None:
self.font_tag = font_tag
self.font_height = height
self.xpos = xpos
self.ypos = ypos
self.entries = entries
def as_dict(self, *args: Any, **kwargs: Any) -> Dict[str, Any]:
return {
'font_tag': self.font_tag,
'font_height': self.font_height,
'xpos': self.xpos,
'ypos': self.ypos,
'entries': [e.as_dict(*args, **kwargs) for e in self.entries],
}
class AP2DefineTextTag(Tag):
def __init__(self, id: int, lines: List[AP2TextLine]) -> None:
super().__init__(id)
self.lines = lines
def as_dict(self, *args: Any, **kwargs: Any) -> Dict[str, Any]:
return {
'lines': [line.as_dict(*args, **kwargs) for line in self.lines],
}
@ -871,24 +925,36 @@ class SWF(TrackedCoverage, VerboseOutput):
return AP2DefineSpriteTag(sprite_id, tags, frames)
elif tagid == AP2Tag.AP2_DEFINE_FONT:
unk, font_id, fontname_offset, xml_prefix_offset, data_offset, data_count = struct.unpack("<HHHHHH", ap2data[dataoffset:(dataoffset + 12)])
unk, font_id, fontname_offset, xml_prefix_offset, text_index_count, height_count = struct.unpack("<HHHHHH", ap2data[dataoffset:(dataoffset + 12)])
self.add_coverage(dataoffset, 12)
fontname = self.__get_string(fontname_offset)
xml_prefix = self.__get_string(xml_prefix_offset)
self.vprint(f"{prefix} Tag ID: {font_id}, Unknown: {unk}, Font Name: {fontname}, XML Prefix: {xml_prefix}, Entries: {data_count}")
self.vprint(
f"{prefix} Tag ID: {font_id}, Unknown: {unk}, Font Name: {fontname}, "
f"XML Prefix: {xml_prefix}, Text Index Entries: {text_index_count}, Height Entries: {height_count}"
)
text_indexes: List[int] = []
for i in range(text_index_count):
entry_offset = dataoffset + 12 + (i * 2)
entry_value = struct.unpack("<H", ap2data[entry_offset:(entry_offset + 2)])[0]
text_indexes.append(entry_value)
self.add_coverage(entry_offset, 2)
self.vprint(f"{prefix} Text Index: {i}: {entry_value} ({chr(entry_value)})")
heights: List[int] = []
for i in range(data_count):
entry_offset = dataoffset + 12 + (data_offset * 2) + (i * 2)
for i in range(height_count):
entry_offset = dataoffset + 12 + (text_index_count * 2) + (i * 2)
entry_value = struct.unpack("<H", ap2data[entry_offset:(entry_offset + 2)])[0]
heights.append(entry_value)
self.add_coverage(entry_offset, 2)
self.vprint(f"{prefix} Height: {entry_value}")
return AP2DefineFontTag(font_id, fontname, xml_prefix, heights)
return AP2DefineFontTag(font_id, fontname, xml_prefix, heights, text_indexes)
elif tagid == AP2Tag.AP2_DO_ACTION:
datachunk = ap2data[dataoffset:(dataoffset + size)]
bytecode = self.__parse_bytecode(datachunk, prefix=prefix)
@ -1005,10 +1071,10 @@ class SWF(TrackedCoverage, VerboseOutput):
self.add_coverage(dataoffset + running_pointer, 8)
running_pointer += 8
multcolor.r = float(r) * 0.003921569
multcolor.g = float(g) * 0.003921569
multcolor.b = float(b) * 0.003921569
multcolor.a = float(a) * 0.003921569
multcolor.r = float(r) / 255.0
multcolor.g = float(g) / 255.0
multcolor.b = float(b) / 255.0
multcolor.a = float(a) / 255.0
self.vprint(f"{prefix} Mult Color: {multcolor}")
if flags & 0x1000:
@ -1018,10 +1084,10 @@ class SWF(TrackedCoverage, VerboseOutput):
self.add_coverage(dataoffset + running_pointer, 8)
running_pointer += 8
addcolor.r = float(r) * 0.003921569
addcolor.g = float(g) * 0.003921569
addcolor.b = float(b) * 0.003921569
addcolor.a = float(a) * 0.003921569
addcolor.r = float(r) / 255.0
addcolor.g = float(g) / 255.0
addcolor.b = float(b) / 255.0
addcolor.a = float(a) / 255.0
self.vprint(f"{prefix} Add Color: {addcolor}")
if flags & 0x2000:
@ -1031,10 +1097,10 @@ class SWF(TrackedCoverage, VerboseOutput):
self.add_coverage(dataoffset + running_pointer, 4)
running_pointer += 4
multcolor.r = float((rgba >> 24) & 0xFF) * 0.003921569
multcolor.g = float((rgba >> 16) & 0xFF) * 0.003921569
multcolor.b = float((rgba >> 8) & 0xFF) * 0.003921569
multcolor.a = float(rgba & 0xFF) * 0.003921569
multcolor.r = float((rgba >> 24) & 0xFF) / 255.0
multcolor.g = float((rgba >> 16) & 0xFF) / 255.0
multcolor.b = float((rgba >> 8) & 0xFF) / 255.0
multcolor.a = float(rgba & 0xFF) / 255.0
self.vprint(f"{prefix} Mult Color: {multcolor}")
if flags & 0x4000:
@ -1044,10 +1110,10 @@ class SWF(TrackedCoverage, VerboseOutput):
self.add_coverage(dataoffset + running_pointer, 4)
running_pointer += 4
addcolor.r = float((rgba >> 24) & 0xFF) * 0.003921569
addcolor.g = float((rgba >> 16) & 0xFF) * 0.003921569
addcolor.b = float((rgba >> 8) & 0xFF) * 0.003921569
addcolor.a = float(rgba & 0xFF) * 0.003921569
addcolor.r = float((rgba >> 24) & 0xFF) / 255.0
addcolor.g = float((rgba >> 16) & 0xFF) / 255.0
addcolor.b = float((rgba >> 8) & 0xFF) / 255.0
addcolor.a = float(rgba & 0xFF) / 255.0
self.vprint(f"{prefix} Add Color: {addcolor}")
bytecodes: Dict[int, List[ByteCode]] = {}
@ -1228,9 +1294,85 @@ class SWF(TrackedCoverage, VerboseOutput):
self.add_coverage(dataoffset, 4)
return AP2RemoveObjectTag(object_id, depth)
elif tagid == AP2Tag.AP2_DEFINE_TEXT:
flags, text_id, text_data_count, sub_data_total_count, text_data_offset, sub_data_base_offset = struct.unpack(
"<HHHHHH",
ap2data[dataoffset:(dataoffset + 12)],
)
self.add_coverage(dataoffset, 12)
if flags != 0:
raise Exception(f"Unexpected flags {hex(flags)} in AP2_DEFINE_TEXT!")
extra_data = (12 + (20 * text_data_count) + (4 * sub_data_total_count))
if size < extra_data:
raise Exception(f"Unexpected size {size}, expected at least {extra_data} for AP2_DEFINE_TEXT!")
if size > extra_data:
# There seems to be some amount of data left over at the end, not sure what it
# is or does. I don't see any references to it being used in the tag loader.
pass
self.vprint(f"{prefix} Tag ID: {text_id}, Count of Entries: {text_data_count}, Count of Sub Entries: {sub_data_total_count}")
lines: List[AP2TextLine] = []
for i in range(text_data_count):
chunk_data_offset = dataoffset + text_data_offset + (20 * i)
chunk_flags, sub_data_count, font_tag, font_height, xpos, ypos, sub_data_offset, rgba = struct.unpack(
"<IHHHHHHI",
ap2data[chunk_data_offset:(chunk_data_offset + 20)],
)
self.add_coverage(chunk_data_offset, 20)
if not (chunk_flags & 0x1):
xpos = 0.0
else:
xpos = float(xpos) / 20.0
if not (chunk_flags & 0x2):
ypos = 0.0
else:
ypos = float(ypos) / 20.0
if not (chunk_flags & 0x8):
font_tag = None
color = Color(
float(rgba & 0xFF) / 255.0,
float((rgba >> 8) & 0xFF) / 255.0,
float((rgba >> 16) & 0xFF) / 255.0,
float((rgba >> 24) & 0xFF) / 255.0,
)
self.vprint(f"{prefix} Font Tag: {font_tag}, Font Height: {font_height}, X: {xpos}, Y: {ypos}, Count of Sub-Entries: {sub_data_count}, Color: {color}")
base_offset = dataoffset + (sub_data_offset * 4) + sub_data_base_offset
offsets: List[AP2TextChar] = []
for i in range(sub_data_count):
sub_chunk_offset = base_offset + (i * 4)
font_text_index, xoff = struct.unpack(
"<HH",
ap2data[sub_chunk_offset:(sub_chunk_offset + 4)],
)
self.add_coverage(sub_chunk_offset, 4)
entry_width = round(float(xoff) / 20.0, 5)
offsets.append(AP2TextChar(font_text_index, entry_width))
self.vprint(f"{prefix} Font Text Index: {font_text_index}, X: {xpos}, Width: {entry_width}")
# Make room for next character.
xpos = round(xpos + entry_width, 5)
lines.append(
AP2TextLine(
font_tag,
font_height,
xpos,
ypos,
offsets,
)
)
return AP2DefineTextTag(text_id, lines)
elif tagid == AP2Tag.AP2_DEFINE_EDIT_TEXT:
if size != 44:
raise Exception("Invalid size {size} to get data from AP2_DEFINE_EDIT_TEXT!")
raise Exception(f"Invalid size {size} to get data from AP2_DEFINE_EDIT_TEXT!")
flags, edit_text_id, defined_font_tag_id, font_height, unk_str2_offset = struct.unpack("<IHHHH", ap2data[dataoffset:(dataoffset + 12)])
self.add_coverage(dataoffset, 12)
@ -1274,6 +1416,7 @@ class SWF(TrackedCoverage, VerboseOutput):
return AP2DefineEditTextTag(edit_text_id, defined_font_tag_id, font_height, rect, color, default_text=default_text)
else:
self.vprint(f"Unknown tag {hex(tagid)} with data {ap2data[dataoffset:(dataoffset + size)]!r}")
raise Exception(f"Unimplemented tag {hex(tagid)}!")
def __parse_tags(self, ap2_version: int, afp_version: int, ap2data: bytes, tags_base_offset: int, prefix: str = "") -> Tuple[List[Tag], List[Frame]]: