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fonttosfnt.16962
0011-move-metrics-calculation-to-write.c.patch
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File 0011-move-metrics-calculation-to-write.c.patch of Package fonttosfnt.16962
From 3e1b682e939f171a1972427400ef562fa6f2d68f Mon Sep 17 00:00:00 2001 From: Christopher Zimmermann <madroach@gmerlin.de> Date: Thu, 30 Jul 2020 21:34:59 +0200 Subject: [PATCH 11/14] move metrics calculation to write.c --- fonttosfnt.h | 2 +- struct.c | 89 ------------------------------------------ write.c | 107 ++++++++++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 106 insertions(+), 92 deletions(-) diff --git a/fonttosfnt.h b/fonttosfnt.h index 9869129..6ad30fb 100644 --- a/fonttosfnt.h +++ b/fonttosfnt.h @@ -169,7 +169,7 @@ int findCode(CmapPtr, int); BitmapPtr strikeBitmapIndex(StrikePtr, CmapPtr, int); int strikeMaxWidth(StrikePtr); int glyphMetrics(FontPtr, int, int*, int*, int*, int*, int*); -void fontMetrics(FontPtr, MetricsPtr); +void fontMetrics(FontPtr); int maxIndex(CmapPtr); int readFile(char *filename, FontPtr); diff --git a/struct.c b/struct.c index 0317673..01f5e4d 100644 --- a/struct.c +++ b/struct.c @@ -483,92 +483,3 @@ glyphMetrics(FontPtr font, int code, return -1; } - -void -fontMetrics(FontPtr font, MetricsPtr metrics) -{ - int i, rc; - double sumAwidth = 0; - unsigned count = 0; - - metrics->height = UNDEF /* TODO */; - metrics->maxAwidth = 0; - metrics->maxX = -10000 * TWO_SIXTEENTH; - metrics->maxY = -10000 * TWO_SIXTEENTH; - metrics->minX = 10000 * TWO_SIXTEENTH; - metrics->minY = 10000 * TWO_SIXTEENTH; - metrics->ascent = UNDEF; - metrics->descent = UNDEF; - metrics->underlinePosition = UNDEF; - metrics->underlineThickness = UNDEF; - - for(i = 0; i < FONT_CODES; i++) { - int awidth, x0, y0, x1, y1; - rc = glyphMetrics(font, i, &awidth, &x0, &y0, &x1, &y1); - if(rc < 0) - continue; - - if(awidth > metrics->maxAwidth) metrics->maxAwidth = awidth; - if(x0 < metrics->minX) metrics->minX = x0; - if(y0 < metrics->minY) metrics->minY = y0; - if(x1 > metrics->maxX) metrics->maxX = x1; - if(y1 > metrics->maxY) metrics->maxY = y1; - - if(awidth > 0) { - sumAwidth += awidth; - count++; - } - } - - if (count) metrics->awidth = sumAwidth / count; - - if(font->pxMetrics.ascent == UNDEF) - metrics->ascent = metrics->maxY; - else - metrics->ascent = - font->pxMetrics.ascent - * TWO_SIXTEENTH / font->pxMetrics.height; - - if(font->pxMetrics.descent == UNDEF) - metrics->descent = metrics->minY; - else - metrics->descent = - font->pxMetrics.descent - * TWO_SIXTEENTH / font->pxMetrics.height; - - if(font->pxMetrics.capHeight == UNDEF) - /* TODO get ascent of letter 'X' - how to do lookups of ascii codes ? */ - metrics->capHeight = metrics->ascent; - else - metrics->capHeight = - font->pxMetrics.capHeight - * TWO_SIXTEENTH / font->pxMetrics.height; - - if(font->pxMetrics.xHeight == UNDEF) - /* TODO get ascent of letter 'x' - how to do lookups of ascii codes ? */ - metrics->xHeight = metrics->ascent * 2 / 3; - else - metrics->xHeight = - font->pxMetrics.xHeight - * TWO_SIXTEENTH / font->pxMetrics.height; - - if(font->pxMetrics.underlinePosition == UNDEF) - metrics->underlinePosition = - metrics->descent * 2; - else - metrics->underlinePosition = - font->pxMetrics.underlinePosition - * TWO_SIXTEENTH / font->pxMetrics.height; - - if(font->pxMetrics.underlineThickness == UNDEF) - /* TODO: this could be refined according to - * X Logical Font Description Conventions (xlfd.txt) - * by also considering the font weight. */ - /* make sure thickness is at least one pixel. */ - metrics->underlineThickness = - TWO_SIXTEENTH - / (font->pxMetrics.height < 9 ? font->pxMetrics.height : 9); - else - metrics->underlineThickness = - font->pxMetrics.underlineThickness - * TWO_SIXTEENTH / font->pxMetrics.height; -} diff --git a/write.c b/write.c index 971190f..69d8f45 100644 --- a/write.c +++ b/write.c @@ -205,6 +205,109 @@ readULONG(FILE *out) return ntohl(val); } +void +fontMetrics(FontPtr font) +{ + int i, rc; + double sumAwidth = 0; + unsigned count = 0; + + font->metrics.maxAwidth = 0; + font->metrics.maxX = -10000 * TWO_SIXTEENTH; + font->metrics.maxY = -10000 * TWO_SIXTEENTH; + font->metrics.minX = 10000 * TWO_SIXTEENTH; + font->metrics.minY = 10000 * TWO_SIXTEENTH; + + for(i = 0; i < FONT_CODES; i++) { + int awidth, x0, y0, x1, y1; + rc = glyphMetrics(font, i, &awidth, &x0, &y0, &x1, &y1); + if(rc < 0) + continue; + + if(awidth > font->metrics.maxAwidth) font->metrics.maxAwidth = awidth; + if(x0 < font->metrics.minX) font->metrics.minX = x0; + if(y0 < font->metrics.minY) font->metrics.minY = y0; + if(x1 > font->metrics.maxX) font->metrics.maxX = x1; + if(y1 > font->metrics.maxY) font->metrics.maxY = y1; + + if(awidth > 0) { + sumAwidth += awidth; + count++; + } + } + + if (count) font->metrics.awidth = sumAwidth / count; + + font->metrics.height = UNDEF /* TODO */; + + if(font->pxMetrics.ascent == UNDEF) { + font->metrics.ascent = font->metrics.maxY; + font->pxMetrics.ascent = + font->metrics.ascent + * font->pxMetrics.height / TWO_SIXTEENTH; + } + else + font->metrics.ascent = + font->pxMetrics.ascent + * TWO_SIXTEENTH / font->pxMetrics.height; + + if(font->pxMetrics.descent == UNDEF) { + font->metrics.descent = font->metrics.minY; + font->pxMetrics.descent = + font->metrics.descent + * font->pxMetrics.height / TWO_SIXTEENTH; + } + else + font->metrics.descent = + font->pxMetrics.descent + * TWO_SIXTEENTH / font->pxMetrics.height; + + fprintf(stderr, "ascent %d ascentpx %d descent %d descentpx %d\n", + font->metrics.ascent, + font->pxMetrics.ascent, + font->metrics.descent, + font->pxMetrics.descent); + + if(font->pxMetrics.capHeight == UNDEF) + /* TODO get ascent of letter 'X' - how to do lookups of ascii codes ? */ + font->metrics.capHeight = font->metrics.ascent; + else + font->metrics.capHeight = + font->pxMetrics.capHeight + * TWO_SIXTEENTH / font->pxMetrics.height; + + if(font->pxMetrics.xHeight == UNDEF) + /* TODO get ascent of letter 'x' - how to do lookups of ascii codes ? */ + font->metrics.xHeight = font->metrics.ascent * 2 / 3; + else + font->metrics.xHeight = + font->pxMetrics.xHeight + * TWO_SIXTEENTH / font->pxMetrics.height; + + if(font->pxMetrics.underlinePosition == UNDEF) + font->metrics.underlinePosition = - font->metrics.descent * 2; + else { + fprintf(stderr, "Setting underlinePosition. pxMetrics.underlinePosition is %d. height is %d\n", + font->pxMetrics.underlinePosition, font->pxMetrics.height); + font->metrics.underlinePosition = + font->pxMetrics.underlinePosition + * TWO_SIXTEENTH / font->pxMetrics.height; + } + + if(font->pxMetrics.underlineThickness == UNDEF) + /* TODO: this could be refined according to + * X Logical Font Description Conventions (xlfd.txt) + * by also considering the font weight. */ + /* make sure thickness is at least one pixel. */ + font->metrics.underlineThickness = + TWO_SIXTEENTH + / (font->pxMetrics.height < 9 ? font->pxMetrics.height : 9); + else + font->metrics.underlineThickness = + font->pxMetrics.underlineThickness + * TWO_SIXTEENTH / font->pxMetrics.height; +} + int writeFile(char *filename, FontPtr font) { @@ -218,8 +321,6 @@ writeFile(char *filename, FontPtr font) int offset[15], length[15]; StrikePtr strike; - fontMetrics(font, &font->metrics); - out = fopen(filename, "wb+"); if(out == NULL) return -1; @@ -230,6 +331,8 @@ writeFile(char *filename, FontPtr font) return -1; } + fontMetrics(font); + write_error_occurred = 0; read_error_occurred = 0; -- 2.28.0
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