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Changed fontinfo passing to be immutable with #by_ptr directive when the c header's proc is 'const stbtt_fontinfo* info'

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Edward R. Gonzalez
2025-01-06 10:46:55 -05:00
parent 7382244afc
commit f079345b8a
1 changed files with 40 additions and 40 deletions
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vendor/stb/truetype/stb_truetype.odin
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+40 -40
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@@ -200,9 +200,9 @@ foreign stbtt {
// then call RenderIntoRects repeatedly. This may result in a
// better packing than calling PackFontRanges multiple times
// (or it may not).
PackFontRangesGatherRects :: proc(spc: ^pack_context, info: ^fontinfo, ranges: ^pack_range, num_ranges: c.int, rects: [^]stbrp.Rect) -> c.int ---
PackFontRangesGatherRects :: proc(spc: ^pack_context, #by_ptr info: fontinfo, ranges: ^pack_range, num_ranges: c.int, rects: [^]stbrp.Rect) -> c.int ---
PackFontRangesPackRects :: proc(spc: ^pack_context, rects: [^]stbrp.Rect, num_rects: c.int) ---
PackFontRangesRenderIntoRects :: proc(spc: ^pack_context, info: ^fontinfo, ranges: ^pack_range, num_ranges: c.int, rects: [^]stbrp.Rect) -> c.int ---
PackFontRangesRenderIntoRects :: proc(spc: ^pack_context, #by_ptr info: fontinfo, ranges: ^pack_range, num_ranges: c.int, rects: [^]stbrp.Rect) -> c.int ---
}
//////////////////////////////////////////////////////////////////////////////
@@ -265,7 +265,7 @@ foreign stbtt {
// going to process, then use glyph-based functions instead of the
// codepoint-based functions.
// Returns 0 if the character codepoint is not defined in the font.
FindGlyphIndex :: proc(info: ^fontinfo, unicode_codepoint: rune) -> c.int ---
FindGlyphIndex :: proc(#by_ptr info: fontinfo, unicode_codepoint: rune) -> c.int ---
}
//////////////////////////////////////////////////////////////////////////////
@@ -281,12 +281,12 @@ foreign stbtt {
// and computing:
// scale = pixels / (ascent - descent)
// so if you prefer to measure height by the ascent only, use a similar calculation.
ScaleForPixelHeight :: proc(info: ^fontinfo, pixels: f32) -> f32 ---
ScaleForPixelHeight :: proc(#by_ptr info: fontinfo, pixels: f32) -> f32 ---
// computes a scale factor to produce a font whose EM size is mapped to
// 'pixels' tall. This is probably what traditional APIs compute, but
// I'm not positive.
ScaleForMappingEmToPixels :: proc(info: ^fontinfo, pixels: f32) -> f32 ---
ScaleForMappingEmToPixels :: proc(#by_ptr info: fontinfo, pixels: f32) -> f32 ---
// ascent is the coordinate above the baseline the font extends; descent
// is the coordinate below the baseline the font extends (i.e. it is typically negative)
@@ -294,32 +294,32 @@ foreign stbtt {
// so you should advance the vertical position by "*ascent - *descent + *lineGap"
// these are expressed in unscaled coordinates, so you must multiply by
// the scale factor for a given size
GetFontVMetrics :: proc(info: ^fontinfo, ascent, descent, lineGap: ^c.int) ---
GetFontVMetrics :: proc(#by_ptr info: fontinfo, ascent, descent, lineGap: ^c.int) ---
// analogous to GetFontVMetrics, but returns the "typographic" values from the OS/2
// table (specific to MS/Windows TTF files).
//
// Returns 1 on success (table present), 0 on failure.
GetFontVMetricsOS2 :: proc(info: ^fontinfo, typoAscent, typoDescent, typoLineGap: ^c.int) -> b32 ---
GetFontVMetricsOS2 :: proc(#by_ptr info: fontinfo, typoAscent, typoDescent, typoLineGap: ^c.int) -> b32 ---
// the bounding box around all possible characters
GetFontBoundingBox :: proc(info: ^fontinfo, x0, y0, x1, y1: ^c.int) ---
GetFontBoundingBox :: proc(#by_ptr info: fontinfo, x0, y0, x1, y1: ^c.int) ---
// leftSideBearing is the offset from the current horizontal position to the left edge of the character
// advanceWidth is the offset from the current horizontal position to the next horizontal position
// these are expressed in unscaled coordinates
GetCodepointHMetrics :: proc(info: ^fontinfo, codepoint: rune, advanceWidth, leftSideBearing: ^c.int) ---
GetCodepointHMetrics :: proc(#by_ptr info: fontinfo, codepoint: rune, advanceWidth, leftSideBearing: ^c.int) ---
// an additional amount to add to the 'advance' value between ch1 and ch2
GetCodepointKernAdvance :: proc(info: ^fontinfo, ch1, ch2: rune) -> (advance: c.int) ---
GetCodepointKernAdvance :: proc(#by_ptr info: fontinfo, ch1, ch2: rune) -> (advance: c.int) ---
// Gets the bounding box of the visible part of the glyph, in unscaled coordinates
GetCodepointBox :: proc(info: ^fontinfo, codepoint: rune, x0, y0, x1, y1: ^c.int) -> c.int ---
GetCodepointBox :: proc(#by_ptr info: fontinfo, codepoint: rune, x0, y0, x1, y1: ^c.int) -> c.int ---
// as above, but takes one or more glyph indices for greater efficiency
GetGlyphHMetrics :: proc(info: ^fontinfo, glyph_index: c.int, advanceWidth, leftSideBearing: ^c.int) ---
GetGlyphKernAdvance :: proc(info: ^fontinfo, glyph1, glyph2: c.int) -> c.int ---
GetGlyphBox :: proc(info: ^fontinfo, glyph_index: c.int, x0, y0, x1, y1: ^c.int) -> c.int ---
GetGlyphHMetrics :: proc(#by_ptr info: fontinfo, glyph_index: c.int, advanceWidth, leftSideBearing: ^c.int) ---
GetGlyphKernAdvance :: proc(#by_ptr info: fontinfo, glyph1, glyph2: c.int) -> c.int ---
GetGlyphBox :: proc(#by_ptr info : fontinfo, glyph_index: c.int, x0, y0, x1, y1: ^c.int) -> c.int ---
}
kerningentry :: struct {
@@ -333,8 +333,8 @@ foreign stbtt {
// Retrieves a complete list of all of the kerning pairs provided by the font
// stbtt_GetKerningTable never writes more than table_length entries and returns how many entries it did write.
// The table will be sorted by (a.glyph1 == b.glyph1)?(a.glyph2 < b.glyph2):(a.glyph1 < b.glyph1)
GetKerningTableLength :: proc(info: ^fontinfo) -> c.int ---
GetKerningTable :: proc(info: ^fontinfo, table: [^]kerningentry, table_length: c.int) -> c.int ---
GetKerningTableLength :: proc(#by_ptr info: fontinfo) -> c.int ---
GetKerningTable :: proc(#by_ptr info: fontinfo, table: [^]kerningentry, table_length: c.int) -> c.int ---
}
@@ -361,7 +361,7 @@ vertex :: struct {
@(default_calling_convention="c", link_prefix="stbtt_")
foreign stbtt {
// returns true if nothing is drawn for this glyph
IsGlyphEmpty :: proc(info: ^fontinfo, glyph_index: c.int) -> b32 ---
IsGlyphEmpty :: proc(#by_ptr info: fontinfo, glyph_index: c.int) -> b32 ---
// returns # of vertices and fills *vertices with the pointer to them
// these are expressed in "unscaled" coordinates
@@ -372,17 +372,17 @@ foreign stbtt {
// draws a line from previous endpoint to its x,y; a curveto
// draws a quadratic bezier from previous endpoint to
// its x,y, using cx,cy as the bezier control point.
GetCodepointShape :: proc(info: ^fontinfo, unicode_codepoint: rune, vertices: ^[^]vertex) -> c.int ---
GetGlyphShape :: proc(info: ^fontinfo, glyph_index: c.int, vertices: ^[^]vertex) -> c.int ---
GetCodepointShape :: proc(#by_ptr info: fontinfo, unicode_codepoint: rune, vertices: ^[^]vertex) -> c.int ---
GetGlyphShape :: proc(#by_ptr info: fontinfo, glyph_index: c.int, vertices: ^[^]vertex) -> c.int ---
// frees the data allocated above
FreeShape :: proc(info: ^fontinfo, vertices: [^]vertex) ---
FreeShape :: proc(#by_ptr info: fontinfo, vertices: [^]vertex) ---
// fills svg with the character's SVG data.
// returns data size or 0 if SVG not found.
FindSVGDoc :: proc(info: ^fontinfo, gl: b32) -> [^]byte ---
GetCodepointSVG :: proc(info: ^fontinfo, unicode_codepoint: rune, svg: ^cstring) -> c.int ---
GetGlyphSVG :: proc(info: ^fontinfo, gl: b32, svg: ^cstring) -> c.int ---
FindSVGDoc :: proc(#by_ptr info: fontinfo, gl: b32) -> [^]byte ---
GetCodepointSVG :: proc(#by_ptr info: fontinfo, unicode_codepoint: rune, svg: ^cstring) -> c.int ---
GetGlyphSVG :: proc(#by_ptr info: fontinfo, gl: b32, svg: ^cstring) -> c.int ---
}
@@ -408,46 +408,46 @@ foreign stbtt {
// which is stored left-to-right, top-to-bottom.
//
// xoff/yoff are the offset it pixel space from the glyph origin to the top-left of the bitmap
GetCodepointBitmap :: proc(info: ^fontinfo, scale_x, scale_y: f32, codepoint: rune, width, height, xoff, yoff: ^c.int) -> [^]byte ---
GetCodepointBitmap :: proc(#by_ptr info: fontinfo, scale_x, scale_y: f32, codepoint: rune, width, height, xoff, yoff: ^c.int) -> [^]byte ---
// the same as stbtt_GetCodepoitnBitmap, but you can specify a subpixel
// shift for the character
GetCodepointBitmapSubpixel :: proc(info: ^fontinfo, scale_x, scale_y, shift_x, shift_y: f32, codepoint: rune, width, height, xoff, yoff: ^c.int) -> [^]byte ---
GetCodepointBitmapSubpixel :: proc(#by_ptr info: fontinfo, scale_x, scale_y, shift_x, shift_y: f32, codepoint: rune, width, height, xoff, yoff: ^c.int) -> [^]byte ---
// the same as stbtt_GetCodepointBitmap, but you pass in storage for the bitmap
// in the form of 'output', with row spacing of 'out_stride' bytes. the bitmap
// is clipped to out_w/out_h bytes. Call stbtt_GetCodepointBitmapBox to get the
// width and height and positioning info for it first.
MakeCodepointBitmap :: proc(info: ^fontinfo, output: [^]byte, out_w, out_h, out_stride: c.int, scale_x, scale_y: f32, codepoint: rune) ---
MakeCodepointBitmap :: proc(#by_ptr info: fontinfo, output: [^]byte, out_w, out_h, out_stride: c.int, scale_x, scale_y: f32, codepoint: rune) ---
// same as stbtt_MakeCodepointBitmap, but you can specify a subpixel
// shift for the character
MakeCodepointBitmapSubpixel :: proc(info: ^fontinfo, output: [^]byte, out_w, out_h, out_stride: c.int, scale_x, scale_y, shift_x, shift_y: f32, codepoint: rune) ---
MakeCodepointBitmapSubpixel :: proc(#by_ptr info: fontinfo, output: [^]byte, out_w, out_h, out_stride: c.int, scale_x, scale_y, shift_x, shift_y: f32, codepoint: rune) ---
// same as stbtt_MakeCodepointBitmapSubpixel, but prefiltering
// is performed (see stbtt_PackSetOversampling)
MakeCodepointBitmapSubpixelPrefilter :: proc(info: ^fontinfo, output: [^]byte, out_w, out_h, out_stride: c.int, scale_x, scale_y, shift_x, shift_y: f32, oversample_x, oversample_y: b32, sub_x, sub_y: ^f32, codepoint: rune) ---
MakeCodepointBitmapSubpixelPrefilter :: proc(#by_ptr info: fontinfo, output: [^]byte, out_w, out_h, out_stride: c.int, scale_x, scale_y, shift_x, shift_y: f32, oversample_x, oversample_y: b32, sub_x, sub_y: ^f32, codepoint: rune) ---
// get the bbox of the bitmap centered around the glyph origin; so the
// bitmap width is ix1-ix0, height is iy1-iy0, and location to place
// the bitmap top left is (leftSideBearing*scale,iy0).
// (Note that the bitmap uses y-increases-down, but the shape uses
// y-increases-up, so CodepointBitmapBox and CodepointBox are inverted.)
GetCodepointBitmapBox :: proc(font: ^fontinfo, codepoint: rune, scale_x, scale_y: f32, ix0, iy0, ix1, iy1: ^c.int) ---
GetCodepointBitmapBox :: proc(#by_ptr font: fontinfo, codepoint: rune, scale_x, scale_y: f32, ix0, iy0, ix1, iy1: ^c.int) ---
// same as stbtt_GetCodepointBitmapBox, but you can specify a subpixel
// shift for the character
GetCodepointBitmapBoxSubpixel :: proc(font: ^fontinfo, codepoint: rune, scale_x, scale_y, shift_x, shift_y: f32, ix0, iy0, ix1, iy1: ^c.int) ---
GetCodepointBitmapBoxSubpixel :: proc(#by_ptr font: fontinfo, codepoint: rune, scale_x, scale_y, shift_x, shift_y: f32, ix0, iy0, ix1, iy1: ^c.int) ---
// the following functions are equivalent to the above functions, but operate
// on glyph indices instead of Unicode codepoints (for efficiency)
GetGlyphBitmap :: proc(info: ^fontinfo, scale_x, scale_y: f32, glyph: c.int, width, height, xoff, yoff: ^c.int) -> [^]byte ---
GetGlyphBitmapSubpixel :: proc(info: ^fontinfo, scale_x, scale_y, shift_x, shift_y: f32, glyph: c.int, width, height, xoff, yoff: ^c.int) -> [^]byte ---
MakeGlyphBitmap :: proc(info: ^fontinfo, output: [^]byte, out_w, out_h, out_stride: c.int, scale_x, scale_y: f32, glyph: c.int) ---
MakeGlyphBitmapSubpixel :: proc(info: ^fontinfo, output: [^]byte, out_w, out_h, out_stride: c.int, scale_x, scale_y, shift_x, shift_y: f32, glyph: c.int) ---
MakeGlyphBitmapSubpixelPrefilter :: proc(info: ^fontinfo, output: [^]byte, out_w, out_h, out_stride: c.int, scale_x, scale_y, shift_x, shift_y: f32, oversample_x, oversample_y: c.int, sub_x, sub_y: ^f32, glyph: c.int) ---
GetGlyphBitmapBox :: proc(font: ^fontinfo, glyph: c.int, scale_x, scale_y: f32, ix0, iy0, ix1, iy1: ^c.int) ---
GetGlyphBitmapBoxSubpixel :: proc(font: ^fontinfo, glyph: c.int, scale_x, scale_y, shift_x, shift_y: f32, ix0, iy0, ix1, iy1: ^c.int) ---
GetGlyphBitmap :: proc(#by_ptr info: fontinfo, scale_x, scale_y: f32, glyph: c.int, width, height, xoff, yoff: ^c.int) -> [^]byte ---
GetGlyphBitmapSubpixel :: proc(#by_ptr info: fontinfo, scale_x, scale_y, shift_x, shift_y: f32, glyph: c.int, width, height, xoff, yoff: ^c.int) -> [^]byte ---
MakeGlyphBitmap :: proc(#by_ptr info: fontinfo, output: [^]byte, out_w, out_h, out_stride: c.int, scale_x, scale_y: f32, glyph: c.int) ---
MakeGlyphBitmapSubpixel :: proc(#by_ptr info: fontinfo, output: [^]byte, out_w, out_h, out_stride: c.int, scale_x, scale_y, shift_x, shift_y: f32, glyph: c.int) ---
MakeGlyphBitmapSubpixelPrefilter :: proc(#by_ptr info: fontinfo, output: [^]byte, out_w, out_h, out_stride: c.int, scale_x, scale_y, shift_x, shift_y: f32, oversample_x, oversample_y: c.int, sub_x, sub_y: ^f32, glyph: c.int) ---
GetGlyphBitmapBox :: proc(#by_ptr font: fontinfo, glyph: c.int, scale_x, scale_y: f32, ix0, iy0, ix1, iy1: ^c.int) ---
GetGlyphBitmapBoxSubpixel :: proc(#by_ptr font: fontinfo, glyph: c.int, scale_x, scale_y, shift_x, shift_y: f32, ix0, iy0, ix1, iy1: ^c.int) ---
// rasterize a shape with quadratic beziers into a bitmap
Rasterize :: proc(result: ^_bitmap, // 1-channel bitmap to draw into
@@ -520,8 +520,8 @@ foreign stbtt {
// The algorithm has not been optimized at all, so expect it to be slow
// if computing lots of characters or very large sizes.
GetGlyphSDF :: proc(info: ^fontinfo, scale: f32, glyph, padding: c.int, onedge_value: u8, pixel_dist_scale: f32, width, height, xoff, yoff: ^c.int) -> [^]byte ---
GetCodepointSDF :: proc(info: ^fontinfo, scale: f32, codepoint, padding: c.int, onedge_value: u8, pixel_dist_scale: f32, width, height, xoff, yoff: ^c.int) -> [^]byte ---
GetGlyphSDF :: proc(#by_ptr info: fontinfo, scale: f32, glyph, padding: c.int, onedge_value: u8, pixel_dist_scale: f32, width, height, xoff, yoff: ^c.int) -> [^]byte ---
GetCodepointSDF :: proc(#by_ptr info: fontinfo, scale: f32, codepoint, padding: c.int, onedge_value: u8, pixel_dist_scale: f32, width, height, xoff, yoff: ^c.int) -> [^]byte ---
}
@@ -571,7 +571,7 @@ foreign stbtt {
// some of the values for the IDs are below; for more see the truetype spec:
// http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6name.html
// http://www.microsoft.com/typography/otspec/name.htm
GetFontNameString :: proc(font: ^fontinfo, length: ^c.int, platformID: PLATFORM_ID, encodingID, languageID, nameID: c.int) -> cstring ---
GetFontNameString :: proc(#by_ptr font: fontinfo, length: ^c.int, platformID: PLATFORM_ID, encodingID, languageID, nameID: c.int) -> cstring ---
}