avolkov
e0d56f37ed
git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@1184 8092fc87-c524-0410-9efc-e669fe64eaf9
76 lines
3.5 KiB
Plaintext
76 lines
3.5 KiB
Plaintext
This is the format for resources of type GFXRES (font variantion -- these
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have the extension .fon in the original source).
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All fonts have exactly 96 character descriptors starting with ASCII
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code 32 (space).
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Everything is stored MSB first unless otherwise specified.
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position length meaning
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4 0xffffffff if the file is uncompressed.
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Otherwise, the file is compressed. When uncompressed, the
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file complies with the rest of the format as described
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below.
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4 Unused in file, always 0x00000000
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1 Font leading: the vertical distance between lines of text
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in pixels.
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1 Max ascender: the maximum extent of the font upwards from
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the baseline in pixels.
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1 Max descender: the maximum extent of the font downwards
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from the baseline in pixels.
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1 Char spacing: the number of pixels in between the
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successive characters.
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1 Kern amount: the number of pixels (out of char spacing)
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that are used for kerning (explained later). Cannot be
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more than char spacing.
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96 Kerning table: each byte corresponds to a character:
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bits 0-1: right-hand side kerning mask
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bits 2-3: left-hand side kerning mask
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For each pair of chars printed the code figures out whether
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the kerning should be used by taking the right mask of a
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preceeding char and ANDing it with the left mask of a
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succeeding char. If the result is 0, the Kern amount is
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subtracted from Char spacing.
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3 alignment padding: aligns the following char descriptors
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on 8-byte boundary.
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Then for all 96 chars:
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Char descriptors (these are frame descriptors from .ani format and some
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bits are most likely never used):
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4 Type index and flags (TypeIndexAndFlags)
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Low 2 bytes:
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bits 0-11 is the index of this frame
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bits 12-15 are the type flags:
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- bit 12-13:
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- 0: (ROM_DRAWABLE)
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- 1: Direct drawable (RAM_DRAWABLE)
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- 2: (SCREEN_DRAWABLE)
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- 3: (OVERLAY_DRAWABLE)
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High 2 bytes (frame flags):
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- bits 0-7: global PLUT to use (probably unused)
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- bit 12: Frame is in cel format (DATA_HARDWARE)
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- bit 13: (DATA_COPY aka DATA_SCREEN)
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- bit 14: (DATA_PACKED)
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- bit 15: (X_FLIP)
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4 Hot spot information (definition of (0, 0) in the image):
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- low 2 bytes: x location of hot spot
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(probably never used)
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- high 2 bytes: y location of hot spot
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This is the baseline of a character. The hotspot Y aligns
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with the baseline of the text.
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4 Image bounds:
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- low 2 bytes: Image width
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- low 2 bytes: Image height
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4 Offset from beginning of the char descriptor for this
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char to the beginning of the frame data.
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Frames:
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Then for all frames:
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See "Frames" in gfxres.
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Initial version 2003-09-02, by Alex Volkov
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Frame descriptors and data from gfxres by Serge van den Boom
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