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-rw-r--r--gfx/ots/src/os2.cc384
1 files changed, 184 insertions, 200 deletions
diff --git a/gfx/ots/src/os2.cc b/gfx/ots/src/os2.cc
index fd5cdd1d6..5376a1dbb 100644
--- a/gfx/ots/src/os2.cc
+++ b/gfx/ots/src/os2.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2009-2017 The OTS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
@@ -10,77 +10,73 @@
// OS/2 - OS/2 and Windows Metrics
// http://www.microsoft.com/typography/otspec/os2.htm
-#define TABLE_NAME "OS/2"
-
namespace ots {
-bool ots_os2_parse(Font *font, const uint8_t *data, size_t length) {
+bool OpenTypeOS2::Parse(const uint8_t *data, size_t length) {
Buffer table(data, length);
- OpenTypeOS2 *os2 = new OpenTypeOS2;
- font->os2 = os2;
-
- if (!table.ReadU16(&os2->version) ||
- !table.ReadS16(&os2->avg_char_width) ||
- !table.ReadU16(&os2->weight_class) ||
- !table.ReadU16(&os2->width_class) ||
- !table.ReadU16(&os2->type) ||
- !table.ReadS16(&os2->subscript_x_size) ||
- !table.ReadS16(&os2->subscript_y_size) ||
- !table.ReadS16(&os2->subscript_x_offset) ||
- !table.ReadS16(&os2->subscript_y_offset) ||
- !table.ReadS16(&os2->superscript_x_size) ||
- !table.ReadS16(&os2->superscript_y_size) ||
- !table.ReadS16(&os2->superscript_x_offset) ||
- !table.ReadS16(&os2->superscript_y_offset) ||
- !table.ReadS16(&os2->strikeout_size) ||
- !table.ReadS16(&os2->strikeout_position) ||
- !table.ReadS16(&os2->family_class)) {
- return OTS_FAILURE_MSG("Error reading basic table elements");
- }
-
- if (os2->version > 5) {
- return OTS_FAILURE_MSG("Unsupported table version: %u", os2->version);
- }
-
- // Follow WPF Font Selection Model's advice.
- if (1 <= os2->weight_class && os2->weight_class <= 9) {
- OTS_WARNING("Bad usWeightClass: %u, changing it to: %u", os2->weight_class, os2->weight_class * 100);
- os2->weight_class *= 100;
- }
- // Ditto.
- if (os2->weight_class > 999) {
- OTS_WARNING("Bad usWeightClass: %u, changing it to: %d", os2->weight_class, 999);
- os2->weight_class = 999;
- }
-
- if (os2->width_class < 1) {
- OTS_WARNING("Bad usWidthClass: %u, changing it to: %d", os2->width_class, 1);
- os2->width_class = 1;
- } else if (os2->width_class > 9) {
- OTS_WARNING("Bad usWidthClass: %u, changing it to: %d", os2->width_class, 9);
- os2->width_class = 9;
+ if (!table.ReadU16(&this->table.version) ||
+ !table.ReadS16(&this->table.avg_char_width) ||
+ !table.ReadU16(&this->table.weight_class) ||
+ !table.ReadU16(&this->table.width_class) ||
+ !table.ReadU16(&this->table.type) ||
+ !table.ReadS16(&this->table.subscript_x_size) ||
+ !table.ReadS16(&this->table.subscript_y_size) ||
+ !table.ReadS16(&this->table.subscript_x_offset) ||
+ !table.ReadS16(&this->table.subscript_y_offset) ||
+ !table.ReadS16(&this->table.superscript_x_size) ||
+ !table.ReadS16(&this->table.superscript_y_size) ||
+ !table.ReadS16(&this->table.superscript_x_offset) ||
+ !table.ReadS16(&this->table.superscript_y_offset) ||
+ !table.ReadS16(&this->table.strikeout_size) ||
+ !table.ReadS16(&this->table.strikeout_position) ||
+ !table.ReadS16(&this->table.family_class)) {
+ return Error("Error reading basic table elements");
+ }
+
+ if (this->table.version > 5) {
+ return Error("Unsupported table version: %u", this->table.version);
+ }
+
+ if (this->table.weight_class < 1) {
+ Warning("Bad usWeightClass: %u, changing it to %d",
+ this->table.weight_class, 1);
+ this->table.weight_class = 1;
+ } else if (this->table.weight_class > 1000) {
+ Warning("Bad usWeightClass: %u, changing it to %d",
+ this->table.weight_class, 1000);
+ this->table.weight_class = 1000;
+ }
+
+ if (this->table.width_class < 1) {
+ Warning("Bad usWidthClass: %u, changing it to %d",
+ this->table.width_class, 1);
+ this->table.width_class = 1;
+ } else if (this->table.width_class > 9) {
+ Warning("Bad usWidthClass: %u, changing it to %d",
+ this->table.width_class, 9);
+ this->table.width_class = 9;
}
// lowest 3 bits of fsType are exclusive.
- if (os2->type & 0x2) {
+ if (this->table.type & 0x2) {
// mask bits 2 & 3.
- os2->type &= 0xfff3u;
- } else if (os2->type & 0x4) {
+ this->table.type &= 0xfff3u;
+ } else if (this->table.type & 0x4) {
// mask bits 1 & 3.
- os2->type &= 0xfff4u;
- } else if (os2->type & 0x8) {
+ this->table.type &= 0xfff4u;
+ } else if (this->table.type & 0x8) {
// mask bits 1 & 2.
- os2->type &= 0xfff9u;
+ this->table.type &= 0xfff9u;
}
// mask reserved bits. use only 0..3, 8, 9 bits.
- os2->type &= 0x30f;
+ this->table.type &= 0x30f;
-#define SET_TO_ZERO(a, b) \
- if (os2->b < 0) { \
- OTS_WARNING("Bad " a ": %d, setting it to zero", os2->b); \
- os2->b = 0; \
+#define SET_TO_ZERO(a, b) \
+ if (this->table.b < 0) { \
+ Warning("Bad " a ": %d, setting it to zero", this->table.b); \
+ this->table.b = 0; \
}
SET_TO_ZERO("ySubscriptXSize", subscript_x_size);
@@ -90,7 +86,7 @@ bool ots_os2_parse(Font *font, const uint8_t *data, size_t length) {
SET_TO_ZERO("yStrikeoutSize", strikeout_size);
#undef SET_TO_ZERO
- static std::string panose_strings[10] = {
+ static const char* panose_strings[10] = {
"bFamilyType",
"bSerifStyle",
"bWeight",
@@ -103,234 +99,222 @@ bool ots_os2_parse(Font *font, const uint8_t *data, size_t length) {
"bXHeight",
};
for (unsigned i = 0; i < 10; ++i) {
- if (!table.ReadU8(&os2->panose[i])) {
- return OTS_FAILURE_MSG("Error reading PANOSE %s", panose_strings[i].c_str());
+ if (!table.ReadU8(&this->table.panose[i])) {
+ return Error("Failed to read PANOSE %s", panose_strings[i]);
}
}
- if (!table.ReadU32(&os2->unicode_range_1) ||
- !table.ReadU32(&os2->unicode_range_2) ||
- !table.ReadU32(&os2->unicode_range_3) ||
- !table.ReadU32(&os2->unicode_range_4) ||
- !table.ReadU32(&os2->vendor_id) ||
- !table.ReadU16(&os2->selection) ||
- !table.ReadU16(&os2->first_char_index) ||
- !table.ReadU16(&os2->last_char_index) ||
- !table.ReadS16(&os2->typo_ascender) ||
- !table.ReadS16(&os2->typo_descender) ||
- !table.ReadS16(&os2->typo_linegap) ||
- !table.ReadU16(&os2->win_ascent) ||
- !table.ReadU16(&os2->win_descent)) {
- return OTS_FAILURE_MSG("Error reading more basic table fields");
+ if (!table.ReadU32(&this->table.unicode_range_1) ||
+ !table.ReadU32(&this->table.unicode_range_2) ||
+ !table.ReadU32(&this->table.unicode_range_3) ||
+ !table.ReadU32(&this->table.unicode_range_4) ||
+ !table.ReadU32(&this->table.vendor_id) ||
+ !table.ReadU16(&this->table.selection) ||
+ !table.ReadU16(&this->table.first_char_index) ||
+ !table.ReadU16(&this->table.last_char_index) ||
+ !table.ReadS16(&this->table.typo_ascender) ||
+ !table.ReadS16(&this->table.typo_descender) ||
+ !table.ReadS16(&this->table.typo_linegap) ||
+ !table.ReadU16(&this->table.win_ascent) ||
+ !table.ReadU16(&this->table.win_descent)) {
+ return Error("Error reading more basic table fields");
}
// If bit 6 is set, then bits 0 and 5 must be clear.
- if (os2->selection & 0x40) {
- os2->selection &= 0xffdeu;
+ if (this->table.selection & 0x40) {
+ this->table.selection &= 0xffdeu;
}
// the settings of bits 0 and 1 must be reflected in the macStyle bits
// in the 'head' table.
- if (!font->head) {
- return OTS_FAILURE_MSG("Needed head table is missing from the font");
- }
- if ((os2->selection & 0x1) &&
- !(font->head->mac_style & 0x2)) {
- OTS_WARNING("adjusting Mac style (italic)");
- font->head->mac_style |= 0x2;
+ OpenTypeHEAD *head = static_cast<OpenTypeHEAD*>(
+ GetFont()->GetTypedTable(OTS_TAG_HEAD));
+
+ if ((this->table.selection & 0x1) &&
+ head && !(head->mac_style & 0x2)) {
+ Warning("Adjusting head.macStyle (italic) to match fsSelection");
+ head->mac_style |= 0x2;
}
- if ((os2->selection & 0x2) &&
- !(font->head->mac_style & 0x4)) {
- OTS_WARNING("adjusting Mac style (underscore)");
- font->head->mac_style |= 0x4;
+ if ((this->table.selection & 0x2) &&
+ head && !(head->mac_style & 0x4)) {
+ Warning("Adjusting head.macStyle (underscore) to match fsSelection");
+ head->mac_style |= 0x4;
}
// While bit 6 on implies that bits 0 and 1 of macStyle are clear,
// the reverse is not true.
- if ((os2->selection & 0x40) &&
- (font->head->mac_style & 0x3)) {
- OTS_WARNING("adjusting Mac style (regular)");
- font->head->mac_style &= 0xfffcu;
+ if ((this->table.selection & 0x40) &&
+ head && (head->mac_style & 0x3)) {
+ Warning("Adjusting head.macStyle (regular) to match fsSelection");
+ head->mac_style &= 0xfffcu;
}
- if ((os2->version < 4) &&
- (os2->selection & 0x300)) {
+ if ((this->table.version < 4) &&
+ (this->table.selection & 0x300)) {
// bit 8 and 9 must be unset in OS/2 table versions less than 4.
- return OTS_FAILURE_MSG("Version %d incompatible with selection %d", os2->version, os2->selection);
+ Warning("fsSelection bits 8 and 9 must be unset for table version %d",
+ this->table.version);
}
// mask reserved bits. use only 0..9 bits.
- os2->selection &= 0x3ff;
+ this->table.selection &= 0x3ff;
- if (os2->first_char_index > os2->last_char_index) {
- return OTS_FAILURE_MSG("first char index %d > last char index %d in os2", os2->first_char_index, os2->last_char_index);
+ if (this->table.first_char_index > this->table.last_char_index) {
+ Warning("usFirstCharIndex %d > usLastCharIndex %d",
+ this->table.first_char_index, this->table.last_char_index);
+ this->table.first_char_index = this->table.last_char_index;
}
- if (os2->typo_linegap < 0) {
- OTS_WARNING("bad linegap: %d", os2->typo_linegap);
- os2->typo_linegap = 0;
+ if (this->table.typo_linegap < 0) {
+ Warning("Bad sTypoLineGap, setting it to 0: %d", this->table.typo_linegap);
+ this->table.typo_linegap = 0;
}
- if (os2->version < 1) {
+ if (this->table.version < 1) {
// http://www.microsoft.com/typography/otspec/os2ver0.htm
return true;
}
- if (length < offsetof(OpenTypeOS2, code_page_range_2)) {
- OTS_WARNING("bad version number: %u", os2->version);
+ if (length < offsetof(OS2Data, code_page_range_2)) {
+ Warning("Bad version number, setting it to 0: %u", this->table.version);
// Some fonts (e.g., kredit1.ttf and quinquef.ttf) have weird version
// numbers. Fix them.
- os2->version = 0;
+ this->table.version = 0;
return true;
}
- if (!table.ReadU32(&os2->code_page_range_1) ||
- !table.ReadU32(&os2->code_page_range_2)) {
- return OTS_FAILURE_MSG("Failed to read codepage ranges");
+ if (!table.ReadU32(&this->table.code_page_range_1) ||
+ !table.ReadU32(&this->table.code_page_range_2)) {
+ return Error("Failed to read ulCodePageRange1 or ulCodePageRange2");
}
- if (os2->version < 2) {
+ if (this->table.version < 2) {
// http://www.microsoft.com/typography/otspec/os2ver1.htm
return true;
}
- if (length < offsetof(OpenTypeOS2, max_context)) {
- OTS_WARNING("bad version number: %u", os2->version);
+ if (length < offsetof(OS2Data, max_context)) {
+ Warning("Bad version number, setting it to 1: %u", this->table.version);
// some Japanese fonts (e.g., mona.ttf) have weird version number.
// fix them.
- os2->version = 1;
+ this->table.version = 1;
return true;
}
- if (!table.ReadS16(&os2->x_height) ||
- !table.ReadS16(&os2->cap_height) ||
- !table.ReadU16(&os2->default_char) ||
- !table.ReadU16(&os2->break_char) ||
- !table.ReadU16(&os2->max_context)) {
- return OTS_FAILURE_MSG("Failed to read version 2-specific fields");
+ if (!table.ReadS16(&this->table.x_height) ||
+ !table.ReadS16(&this->table.cap_height) ||
+ !table.ReadU16(&this->table.default_char) ||
+ !table.ReadU16(&this->table.break_char) ||
+ !table.ReadU16(&this->table.max_context)) {
+ return Error("Failed to read version 2-specific fields");
}
- if (os2->x_height < 0) {
- OTS_WARNING("bad x_height: %d", os2->x_height);
- os2->x_height = 0;
+ if (this->table.x_height < 0) {
+ Warning("Bad sxHeight settig it to 0: %d", this->table.x_height);
+ this->table.x_height = 0;
}
- if (os2->cap_height < 0) {
- OTS_WARNING("bad cap_height: %d", os2->cap_height);
- os2->cap_height = 0;
+ if (this->table.cap_height < 0) {
+ Warning("Bad sCapHeight setting it to 0: %d", this->table.cap_height);
+ this->table.cap_height = 0;
}
- if (os2->version < 5) {
+ if (this->table.version < 5) {
// http://www.microsoft.com/typography/otspec/os2ver4.htm
return true;
}
- if (!table.ReadU16(&os2->lower_optical_pointsize) ||
- !table.ReadU16(&os2->upper_optical_pointsize)) {
- return OTS_FAILURE_MSG("Failed to read version 5-specific fields");
+ if (!table.ReadU16(&this->table.lower_optical_pointsize) ||
+ !table.ReadU16(&this->table.upper_optical_pointsize)) {
+ return Error("Failed to read version 5-specific fields");
}
- if (os2->lower_optical_pointsize > 0xFFFE) {
- OTS_WARNING("'usLowerOpticalPointSize' is bigger than 0xFFFE: %d", os2->lower_optical_pointsize);
- os2->lower_optical_pointsize = 0xFFFE;
+ if (this->table.lower_optical_pointsize > 0xFFFE) {
+ Warning("usLowerOpticalPointSize is bigger than 0xFFFE: %d",
+ this->table.lower_optical_pointsize);
+ this->table.lower_optical_pointsize = 0xFFFE;
}
- if (os2->upper_optical_pointsize < 2) {
- OTS_WARNING("'usUpperOpticalPointSize' is lower than 2: %d", os2->upper_optical_pointsize);
- os2->upper_optical_pointsize = 2;
+ if (this->table.upper_optical_pointsize < 2) {
+ Warning("usUpperOpticalPointSize is lower than 2: %d",
+ this->table.upper_optical_pointsize);
+ this->table.upper_optical_pointsize = 2;
}
return true;
}
-bool ots_os2_should_serialise(Font *font) {
- return font->os2 != NULL;
-}
-
-bool ots_os2_serialise(OTSStream *out, Font *font) {
- const OpenTypeOS2 *os2 = font->os2;
-
- if (!out->WriteU16(os2->version) ||
- !out->WriteS16(os2->avg_char_width) ||
- !out->WriteU16(os2->weight_class) ||
- !out->WriteU16(os2->width_class) ||
- !out->WriteU16(os2->type) ||
- !out->WriteS16(os2->subscript_x_size) ||
- !out->WriteS16(os2->subscript_y_size) ||
- !out->WriteS16(os2->subscript_x_offset) ||
- !out->WriteS16(os2->subscript_y_offset) ||
- !out->WriteS16(os2->superscript_x_size) ||
- !out->WriteS16(os2->superscript_y_size) ||
- !out->WriteS16(os2->superscript_x_offset) ||
- !out->WriteS16(os2->superscript_y_offset) ||
- !out->WriteS16(os2->strikeout_size) ||
- !out->WriteS16(os2->strikeout_position) ||
- !out->WriteS16(os2->family_class)) {
- return OTS_FAILURE_MSG("Failed to write basic OS2 information");
+bool OpenTypeOS2::Serialize(OTSStream *out) {
+ if (!out->WriteU16(this->table.version) ||
+ !out->WriteS16(this->table.avg_char_width) ||
+ !out->WriteU16(this->table.weight_class) ||
+ !out->WriteU16(this->table.width_class) ||
+ !out->WriteU16(this->table.type) ||
+ !out->WriteS16(this->table.subscript_x_size) ||
+ !out->WriteS16(this->table.subscript_y_size) ||
+ !out->WriteS16(this->table.subscript_x_offset) ||
+ !out->WriteS16(this->table.subscript_y_offset) ||
+ !out->WriteS16(this->table.superscript_x_size) ||
+ !out->WriteS16(this->table.superscript_y_size) ||
+ !out->WriteS16(this->table.superscript_x_offset) ||
+ !out->WriteS16(this->table.superscript_y_offset) ||
+ !out->WriteS16(this->table.strikeout_size) ||
+ !out->WriteS16(this->table.strikeout_position) ||
+ !out->WriteS16(this->table.family_class)) {
+ return Error("Failed to write basic table data");
}
for (unsigned i = 0; i < 10; ++i) {
- if (!out->Write(&os2->panose[i], 1)) {
- return OTS_FAILURE_MSG("Failed to write os2 panose information");
+ if (!out->Write(&this->table.panose[i], 1)) {
+ return Error("Failed to write PANOSE data");
}
}
- if (!out->WriteU32(os2->unicode_range_1) ||
- !out->WriteU32(os2->unicode_range_2) ||
- !out->WriteU32(os2->unicode_range_3) ||
- !out->WriteU32(os2->unicode_range_4) ||
- !out->WriteU32(os2->vendor_id) ||
- !out->WriteU16(os2->selection) ||
- !out->WriteU16(os2->first_char_index) ||
- !out->WriteU16(os2->last_char_index) ||
- !out->WriteS16(os2->typo_ascender) ||
- !out->WriteS16(os2->typo_descender) ||
- !out->WriteS16(os2->typo_linegap) ||
- !out->WriteU16(os2->win_ascent) ||
- !out->WriteU16(os2->win_descent)) {
- return OTS_FAILURE_MSG("Failed to write version 1-specific fields");
+ if (!out->WriteU32(this->table.unicode_range_1) ||
+ !out->WriteU32(this->table.unicode_range_2) ||
+ !out->WriteU32(this->table.unicode_range_3) ||
+ !out->WriteU32(this->table.unicode_range_4) ||
+ !out->WriteU32(this->table.vendor_id) ||
+ !out->WriteU16(this->table.selection) ||
+ !out->WriteU16(this->table.first_char_index) ||
+ !out->WriteU16(this->table.last_char_index) ||
+ !out->WriteS16(this->table.typo_ascender) ||
+ !out->WriteS16(this->table.typo_descender) ||
+ !out->WriteS16(this->table.typo_linegap) ||
+ !out->WriteU16(this->table.win_ascent) ||
+ !out->WriteU16(this->table.win_descent)) {
+ return Error("Failed to write version 1-specific fields");
}
- if (os2->version < 1) {
+ if (this->table.version < 1) {
return true;
}
- if (!out->WriteU32(os2->code_page_range_1) ||
- !out->WriteU32(os2->code_page_range_2)) {
- return OTS_FAILURE_MSG("Failed to write codepage ranges");
+ if (!out->WriteU32(this->table.code_page_range_1) ||
+ !out->WriteU32(this->table.code_page_range_2)) {
+ return Error("Failed to write codepage ranges");
}
- if (os2->version < 2) {
+ if (this->table.version < 2) {
return true;
}
- if (!out->WriteS16(os2->x_height) ||
- !out->WriteS16(os2->cap_height) ||
- !out->WriteU16(os2->default_char) ||
- !out->WriteU16(os2->break_char) ||
- !out->WriteU16(os2->max_context)) {
- return OTS_FAILURE_MSG("Failed to write version 2-specific fields");
+ if (!out->WriteS16(this->table.x_height) ||
+ !out->WriteS16(this->table.cap_height) ||
+ !out->WriteU16(this->table.default_char) ||
+ !out->WriteU16(this->table.break_char) ||
+ !out->WriteU16(this->table.max_context)) {
+ return Error("Failed to write version 2-specific fields");
}
- if (os2->version < 5) {
+ if (this->table.version < 5) {
return true;
}
- if (!out->WriteU16(os2->lower_optical_pointsize) ||
- !out->WriteU16(os2->upper_optical_pointsize)) {
- return OTS_FAILURE_MSG("Failed to write version 5-specific fields");
+ if (!out->WriteU16(this->table.lower_optical_pointsize) ||
+ !out->WriteU16(this->table.upper_optical_pointsize)) {
+ return Error("Failed to write version 5-specific fields");
}
return true;
}
-void ots_os2_reuse(Font *font, Font *other) {
- font->os2 = other->os2;
- font->os2_reused = true;
-}
-
-void ots_os2_free(Font *font) {
- delete font->os2;
-}
-
} // namespace ots
-
-#undef TABLE_NAME
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-26 18:52:25 +0000