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skia2/tools/create_test_font.cpp
Cary Clark 992c7b03ef Add standard fonts to all GMs. 
Allow GM results to be compared across machines and platforms by
standardizing the fonts used by all tests.

This adds runtime flags to DM to use either the system font context (the
default), the fonts in the resources directory ( --resourceFonts ) or a set
of canonical paths generated from the fonts ( --portableFonts ).

This CL should leave the current DM results unchanged by default.

If the portable font data or resource font is missing when DM is run, it
falls back to using the system font context.

The create_test_font tool generates the paths and metrics read by DM
with the --portableFonts flag set, and generates the font substitution
tables read by DM with the --resourceFonts flag set.

If DM is run in SkDebug mode with the --reportUsedChars flag set, it
generates the corresponding data compiled into the create_test_font tool.

All GM tests set their typeface information by calling either

  sk_tool_utils::set_portable_typeface or
  sk_tool_utils::portable_typeface .

(The former takes the paint, the latter returns a SkTypeface.) These calls
can be removed in the future when the Font Manager can be superceded.

BUG=skia:2687
R=mtklein@google.com

Review URL: https://codereview.chromium.org/407183003
2014-07-31 08:58:44 -04:00

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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
// running create_test_font generates ./tools/test_font_data.cpp
// which is read by ./tools/sk_tool_utils_font.cpp
#include "Resources.h"
#include "SkOSFile.h"
#include "SkPaint.h"
#include "SkPath.h"
#include "SkStream.h"
#include "SkTArray.h"
#include "SkTSort.h"
#include "SkTypeface.h"
#include "SkUtils.h"
#include <stdio.h>
// the folllowing include is generated by running dm with
// --portableFonts --reportUsedChars
#include "test_font_data_chars.cpp"
#define DEFAULT_FONT_NAME "Liberation Sans"
static struct FontDesc {
const char* fName;
SkTypeface::Style fStyle;
const char* fFont;
const char* fFile;
const char* fCharsUsed;
int fFontIndex;
} gFonts[] = {
{"Courier New", SkTypeface::kNormal, "Courier New", "Courier New.ttf",
gCourierNew},
{"Courier New", SkTypeface::kBold, "Courier New", "Courier New Bold.ttf",
gCourierNew_Bold},
{"Courier New", SkTypeface::kItalic, "Courier New", "Courier New Italic.ttf",
gCourierNew_Italic},
{"Courier New", SkTypeface::kBoldItalic, "Courier New", "Courier New Bold Italic.ttf",
gCourierNew_BoldItalic},
{"Helvetica", SkTypeface::kNormal, "Liberation Sans", "LiberationSans-Regular.ttf",
gLiberationSans},
{"Helvetica", SkTypeface::kBold, "Liberation Sans", "LiberationSans-Bold.ttf",
gLiberationSans_Bold},
{"Helvetica", SkTypeface::kItalic, "Liberation Sans", "LiberationSans-Italic.ttf",
gLiberationSans_Italic},
{"Helvetica", SkTypeface::kBoldItalic, "Liberation Sans", "LiberationSans-BoldItalic.ttf",
gLiberationSans_BoldItalic},
{"Hiragino Maru Gothic Pro", SkTypeface::kNormal, "Hiragino Maru Gothic Pro", "Pro W4.otf",
gHiraginoMaruGothicPro},
{"Liberation Sans", SkTypeface::kNormal, "Liberation Sans", "LiberationSans-Regular.ttf",
gLiberationSans},
{"Liberation Sans", SkTypeface::kBold, "Liberation Sans", "LiberationSans-Bold.ttf",
gLiberationSans_Bold},
{"Liberation Sans", SkTypeface::kItalic, "Liberation Sans", "LiberationSans-Italic.ttf",
gLiberationSans_Italic},
{"Liberation Sans", SkTypeface::kBoldItalic, "Liberation Sans", "LiberationSans-BoldItalic.ttf",
gLiberationSans_BoldItalic},
{"monospace", SkTypeface::kNormal, "Courier New", "Courier New.ttf",
gCourierNew},
{"monospace", SkTypeface::kBold, "Courier New", "Courier New Bold.ttf",
gCourierNew_Bold},
{"monospace", SkTypeface::kItalic, "Courier New", "Courier New Italic.ttf",
gCourierNew_Italic},
{"monospace", SkTypeface::kBoldItalic, "Courier New", "Courier New Bold Italic.ttf",
gCourierNew_BoldItalic},
{"Papyrus", SkTypeface::kNormal, "Papyrus", "Papyrus.ttc",
gPapyrus},
{"sans-serif", SkTypeface::kNormal, "Liberation Sans", "LiberationSans-Regular.ttf",
gLiberationSans},
{"sans-serif", SkTypeface::kBold, "Liberation Sans", "LiberationSans-Bold.ttf",
gLiberationSans_Bold},
{"sans-serif", SkTypeface::kItalic, "Liberation Sans", "LiberationSans-Italic.ttf",
gLiberationSans_Italic},
{"sans-serif", SkTypeface::kBoldItalic, "Liberation Sans", "LiberationSans-BoldItalic.ttf",
gLiberationSans_BoldItalic},
{"serif", SkTypeface::kNormal, "Times New Roman", "Times New Roman.ttf",
gTimesNewRoman},
{"serif", SkTypeface::kBold, "Times New Roman", "Times New Roman Bold.ttf",
gTimesNewRoman_Bold},
{"serif", SkTypeface::kItalic, "Times New Roman", "Times New Roman Italic.ttf",
gTimesNewRoman_Italic},
{"serif", SkTypeface::kBoldItalic, "Times New Roman", "Times New Roman Bold Italic.ttf",
gTimesNewRoman_BoldItalic},
{"Times", SkTypeface::kNormal, "Times New Roman", "Times New Roman.ttf",
gTimesNewRoman},
{"Times", SkTypeface::kBold, "Times New Roman", "Times New Roman Bold.ttf",
gTimesNewRoman_Bold},
{"Times", SkTypeface::kItalic, "Times New Roman", "Times New Roman Italic.ttf",
gTimesNewRoman_Italic},
{"Times", SkTypeface::kBoldItalic, "Times New Roman", "Times New Roman Bold Italic.ttf",
gTimesNewRoman_BoldItalic},
{"Times New Roman", SkTypeface::kNormal, "Times New Roman", "Times New Roman.ttf",
gTimesNewRoman},
{"Times New Roman", SkTypeface::kBold, "Times New Roman", "Times New Roman Bold.ttf",
gTimesNewRoman_Bold},
{"Times New Roman", SkTypeface::kItalic, "Times New Roman", "Times New Roman Italic.ttf",
gTimesNewRoman_Italic},
{"Times New Roman", SkTypeface::kBoldItalic, "Times New Roman", "Times New Roman Bold Italic.ttf",
gTimesNewRoman_BoldItalic},
{"Times Roman", SkTypeface::kNormal, "Liberation Sans", "LiberationSans-Regular.ttf",
gLiberationSans},
};
const int gFontsCount = (int) SK_ARRAY_COUNT(gFonts);
const char* gStyleName[] = {
"kNormal",
"kBold",
"kItalic",
"kBoldItalic",
};
const char gHeader[] =
"/*\n"
" * Copyright 2014 Google Inc.\n"
" *\n"
" * Use of this source code is governed by a BSD-style license that can be\n"
" * found in the LICENSE file.\n"
" */\n"
"\n"
"// Auto-generated by ";
static FILE* font_header() {
SkString outPath(SkOSPath::SkPathJoin(".", "tools"));
outPath = SkOSPath::SkPathJoin(outPath.c_str(), "test_font_data.cpp");
FILE* out = fopen(outPath.c_str(), "w");
fprintf(out, "%s%s\n\n", gHeader, SkOSPath::SkBasename(__FILE__).c_str());
return out;
}
enum {
kMaxLineLength = 80,
};
static ptrdiff_t last_line_length(const SkString& str) {
const char* first = str.c_str();
const char* last = first + str.size();
const char* ptr = last;
while (ptr > first && *--ptr != '\n')
;
return last - ptr - 1;
}
static void output_fixed(SkScalar num, int emSize, SkString* out) {
int hex = (int) (num * 65536 / emSize);
out->appendf("0x%08x,", hex);
*out += (int) last_line_length(*out) >= kMaxLineLength ? '\n' : ' ';
}
static void output_scalar(SkScalar num, int emSize, SkString* out) {
num /= emSize;
if (num == (int) num) {
out->appendS32((int) num);
} else {
SkString str;
str.printf("%1.6g", num);
int width = (int) str.size();
const char* cStr = str.c_str();
while (cStr[width - 1] == '0') {
--width;
}
str.remove(width, str.size() - width);
out->appendf("%sf", str.c_str());
}
*out += ',';
*out += (int) last_line_length(*out) >= kMaxLineLength ? '\n' : ' ';
}
static int output_points(const SkPoint* pts, int emSize, int count, SkString* ptsOut) {
for (int index = 0; index < count; ++index) {
// SkASSERT(floor(pts[index].fX) == pts[index].fX);
output_scalar(pts[index].fX, emSize, ptsOut);
// SkASSERT(floor(pts[index].fY) == pts[index].fY);
output_scalar(pts[index].fY, emSize, ptsOut);
}
return count;
}
static void output_path_data(const SkPaint& paint, const char* used,
int emSize, SkString* ptsOut, SkTDArray<SkPath::Verb>* verbs,
SkTDArray<unsigned>* charCodes, SkTDArray<SkScalar>* widths) {
while (*used) {
SkUnichar index = SkUTF8_NextUnichar(&used);
SkPath path;
paint.getTextPath((const void*) &index, 2, 0, 0, &path);
SkPath::RawIter iter(path);
SkPath::Verb verb;
SkPoint pts[4];
while ((verb = iter.next(pts)) != SkPath::kDone_Verb) {
*verbs->append() = verb;
switch (verb) {
case SkPath::kMove_Verb:
output_points(&pts[0], emSize, 1, ptsOut);
break;
case SkPath::kLine_Verb:
output_points(&pts[1], emSize, 1, ptsOut);
break;
case SkPath::kQuad_Verb:
output_points(&pts[1], emSize, 2, ptsOut);
break;
case SkPath::kCubic_Verb:
output_points(&pts[1], emSize, 3, ptsOut);
break;
case SkPath::kClose_Verb:
break;
default:
SkDEBUGFAIL("bad verb");
SkASSERT(0);
}
}
*verbs->append() = SkPath::kDone_Verb;
*charCodes->append() = index;
SkScalar width;
SkDEBUGCODE(int charCount =) paint.getTextWidths((const void*) &index, 2, &width);
SkASSERT(charCount == 1);
// SkASSERT(floor(width) == width); // not true for Hiragino Maru Gothic Pro
*widths->append() = width;
}
}
static int offset_str_len(unsigned num) {
if (num == (unsigned) -1) {
return 10;
}
unsigned result = 1;
unsigned ref = 10;
while (ref <= num) {
++result;
ref *= 10;
}
return result;
}
static SkString strip_spaces(const SkString& str) {
SkString result;
int count = (int) str.size();
for (int index = 0; index < count; ++index) {
char c = str[index];
if (c != ' ' && c != '-') {
result += c;
}
}
return result;
}
static SkString strip_final(const SkString& str) {
SkString result(str);
if (result.endsWith("\n")) {
result.remove(result.size() - 1, 1);
}
if (result.endsWith(" ")) {
result.remove(result.size() - 1, 1);
}
if (result.endsWith(",")) {
result.remove(result.size() - 1, 1);
}
return result;
}
static void output_font(SkTypeface* face, const char* name, SkTypeface::Style style,
const char* used, FILE* out) {
int emSize = face->getUnitsPerEm() * 2;
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextAlign(SkPaint::kLeft_Align);
paint.setTextEncoding(SkPaint::kUTF16_TextEncoding);
paint.setTextSize(emSize);
SkSafeUnref(paint.setTypeface(face));
SkTDArray<SkPath::Verb> verbs;
SkTDArray<unsigned> charCodes;
SkTDArray<SkScalar> widths;
SkString ptsOut;
output_path_data(paint, used, emSize, &ptsOut, &verbs, &charCodes, &widths);
SkString fontnameStr(name);
SkString strippedStr = strip_spaces(fontnameStr);
strippedStr.appendf("%s", gStyleName[style]);
const char* fontname = strippedStr.c_str();
fprintf(out, "const SkScalar %sPoints[] = {\n", fontname);
ptsOut = strip_final(ptsOut);
fprintf(out, "%s", ptsOut.c_str());
fprintf(out, "\n};\n\n");
fprintf(out, "const unsigned char %sVerbs[] = {\n", fontname);
int verbCount = verbs.count();
int outChCount = 0;
for (int index = 0; index < verbCount;) {
SkPath::Verb verb = verbs[index];
SkASSERT(verb >= SkPath::kMove_Verb && verb <= SkPath::kDone_Verb);
SkASSERT((unsigned) verb == (unsigned char) verb);
fprintf(out, "%u", verb);
if (++index < verbCount) {
outChCount += 3;
fprintf(out, "%c", ',');
if (outChCount >= kMaxLineLength) {
outChCount = 0;
fprintf(out, "%c", '\n');
} else {
fprintf(out, "%c", ' ');
}
}
}
fprintf(out, "\n};\n\n");
fprintf(out, "const unsigned %sCharCodes[] = {\n", fontname);
int offsetCount = charCodes.count();
for (int index = 0; index < offsetCount;) {
unsigned offset = charCodes[index];
fprintf(out, "%u", offset);
if (++index < offsetCount) {
outChCount += offset_str_len(offset) + 2;
fprintf(out, "%c", ',');
if (outChCount >= kMaxLineLength) {
outChCount = 0;
fprintf(out, "%c", '\n');
} else {
fprintf(out, "%c", ' ');
}
}
}
fprintf(out, "\n};\n\n");
SkString widthsStr;
fprintf(out, "const SkFixed %sWidths[] = {\n", fontname);
for (int index = 0; index < offsetCount; ++index) {
output_fixed(widths[index], emSize, &widthsStr);
}
widthsStr = strip_final(widthsStr);
fprintf(out, "%s\n};\n\n", widthsStr.c_str());
fprintf(out, "const int %sCharCodesCount = (int) SK_ARRAY_COUNT(%sCharCodes);\n\n",
fontname, fontname);
SkPaint::FontMetrics metrics;
paint.getFontMetrics(&metrics);
fprintf(out, "const SkPaint::FontMetrics %sMetrics = {\n", fontname);
SkString metricsStr;
metricsStr.printf("0x%08x, ", metrics.fFlags);
output_scalar(metrics.fTop, emSize, &metricsStr);
output_scalar(metrics.fAscent, emSize, &metricsStr);
output_scalar(metrics.fDescent, emSize, &metricsStr);
output_scalar(metrics.fBottom, emSize, &metricsStr);
output_scalar(metrics.fLeading, emSize, &metricsStr);
output_scalar(metrics.fAvgCharWidth, emSize, &metricsStr);
output_scalar(metrics.fMaxCharWidth, emSize, &metricsStr);
output_scalar(metrics.fXMin, emSize, &metricsStr);
output_scalar(metrics.fXMax, emSize, &metricsStr);
output_scalar(metrics.fXHeight, emSize, &metricsStr);
output_scalar(metrics.fCapHeight, emSize, &metricsStr);
output_scalar(metrics.fUnderlineThickness, emSize, &metricsStr);
output_scalar(metrics.fUnderlinePosition, emSize, &metricsStr);
metricsStr = strip_final(metricsStr);
fprintf(out, "%s\n};\n\n", metricsStr.c_str());
}
struct FontWritten {
const char* fName;
SkTypeface::Style fStyle;
};
static SkTDArray<FontWritten> gWritten;
static int written_index(const FontDesc& fontDesc) {
for (int index = 0; index < gWritten.count(); ++index) {
const FontWritten& writ = gWritten[index];
if (!strcmp(fontDesc.fFont, writ.fName) && fontDesc.fStyle == writ.fStyle) {
return index;
}
}
return -1;
}
static void generate_fonts(FILE* out) {
for (int index = 0; index < gFontsCount; ++index) {
FontDesc& fontDesc = gFonts[index];
int fontIndex = written_index(fontDesc);
if (fontIndex >= 0) {
fontDesc.fFontIndex = fontIndex;
continue;
}
SkTypeface* systemTypeface = SkTypeface::CreateFromName(fontDesc.fFont, fontDesc.fStyle);
SkASSERT(systemTypeface);
SkString filepath(GetResourcePath(fontDesc.fFile));
SkASSERT(sk_exists(filepath.c_str()));
SkTypeface* resourceTypeface = SkTypeface::CreateFromFile(filepath.c_str());
SkASSERT(resourceTypeface);
output_font(resourceTypeface, fontDesc.fFont, fontDesc.fStyle, fontDesc.fCharsUsed, out);
fontDesc.fFontIndex = gWritten.count();
FontWritten* writ = gWritten.append();
writ->fName = fontDesc.fFont;
writ->fStyle = fontDesc.fStyle;
}
}
static void generate_index(const char* defaultName, FILE* out) {
int fontCount = gWritten.count();
fprintf(out,
"static SkTestFontData gTestFonts[] = {\n");
int fontIndex;
for (fontIndex = 0; fontIndex < fontCount; ++fontIndex) {
const FontWritten& writ = gWritten[fontIndex];
const char* name = writ.fName;
SkString strippedStr = strip_spaces(SkString(name));
strippedStr.appendf("%s", gStyleName[writ.fStyle]);
const char* strip = strippedStr.c_str();
fprintf(out,
" { %sPoints, %sVerbs, %sCharCodes,\n"
" %sCharCodesCount, %sWidths,\n"
" %sMetrics, \"%s\", SkTypeface::%s, NULL\n"
" },\n",
strip, strip, strip, strip, strip, strip, name, gStyleName[writ.fStyle]);
}
fprintf(out, "};\n\n");
fprintf(out, "const int gTestFontsCount = (int) SK_ARRAY_COUNT(gTestFonts);\n\n");
fprintf(out,
"struct SubFont {\n"
" const char* fName;\n"
" SkTypeface::Style fStyle;\n"
" SkTestFontData& fFont;\n"
" const char* fFile;\n"
"};\n\n"
"const SubFont gSubFonts[] = {\n");
int defaultIndex = -1;
for (int subIndex = 0; subIndex < gFontsCount; subIndex++) {
const FontDesc& desc = gFonts[subIndex];
if (!strcmp(defaultName, desc.fName)) {
defaultIndex = subIndex;
}
fprintf(out,
" { \"%s\", SkTypeface::%s, gTestFonts[%d], \"%s\"},\n", desc.fName,
gStyleName[desc.fStyle], desc.fFontIndex, desc.fFile);
}
fprintf(out, "};\n\n");
fprintf(out, "const int gSubFontsCount = (int) SK_ARRAY_COUNT(gSubFonts);\n\n");
SkASSERT(defaultIndex >= 0);
fprintf(out, "const int gDefaultFontIndex = %d;\n", defaultIndex);
}
int main(int , char * const []) {
#ifndef SK_BUILD_FOR_MAC
#error "use fonts installed on Mac"
#endif
FILE* out = font_header();
generate_fonts(out);
generate_index(DEFAULT_FONT_NAME, out);
fclose(out);
return 0;
}
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