bool GlyphPage::fill(UChar* buffer, unsigned bufferLength, const Font* fontData)
{
// bufferLength will be greater than the requested number of glyphs if the buffer contains surrogate pairs.
// We won't support this for now.
if (bufferLength > GlyphPage::size)
return false;
bool haveGlyphs = false;
HWndDC dc(0);
SaveDC(dc);
SelectObject(dc, fontData->platformData().hfont());
WORD localGlyphBuffer[GlyphPage::size * 2];
DWORD result = GetGlyphIndices(dc, buffer, bufferLength, localGlyphBuffer, GGI_MARK_NONEXISTING_GLYPHS);
bool success = result != GDI_ERROR && static_cast<unsigned>(result) == bufferLength;
if (success) {
for (unsigned i = 0; i < GlyphPage::size; i++) {
Glyph glyph = localGlyphBuffer[i];
if (glyph == 0xffff)
setGlyphForIndex(i, 0);
else {
setGlyphForIndex(i, glyph);
haveGlyphs = true;
}
}
}
RestoreDC(dc, -1);
return haveGlyphs;
}
bool GlyphPage::fill(unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength, const SimpleFontData* fontData)
{
// bufferLength will be greater than the requested number of glyphs if the buffer contains surrogate pairs.
// We won't support this for now.
if (bufferLength > length)
return false;
bool haveGlyphs = false;
HDC dc = GetDC((HWND)0);
SaveDC(dc);
SelectObject(dc, fontData->platformData().hfont());
TEXTMETRIC tm;
GetTextMetrics(dc, &tm);
WORD localGlyphBuffer[GlyphPage::size * 2];
DWORD result = GetGlyphIndices(dc, buffer, bufferLength, localGlyphBuffer, 0);
bool success = result != GDI_ERROR && static_cast<unsigned>(result) == bufferLength;
if (success) {
for (unsigned i = 0; i < length; i++) {
Glyph glyph = localGlyphBuffer[i];
if (!glyph)
setGlyphDataForIndex(offset + i, 0, 0);
else {
setGlyphDataForIndex(offset + i, glyph, fontData);
haveGlyphs = true;
}
}
}
RestoreDC(dc, -1);
ReleaseDC(0, dc);
return haveGlyphs;
}
void getGlyphIds(FILE *fp, Options *opts)
{
LOGFONT fontDetails = {0};
HFONT font;
HDC hdc = GetDC(NULL);
HGDIOBJ old;
WORD result[4];
DWORD ret;
wchar_t buffer[BUFSIZ];
fontDetails.lfWeight = opts->bold ? 700 : 0;
fontDetails.lfItalic = opts->italic;
wcsncpy_s(fontDetails.lfFaceName, 32, opts->font_name, _TRUNCATE);
fontDetails.lfCharSet = SHIFTJIS_CHARSET;
font = CreateFontIndirect(&fontDetails);
old = SelectObject(hdc, font);
GetTextFace(hdc, BUFSIZ, buffer);
printf("Selected text face: %S\n", buffer);
ret = GetGlyphIndices(hdc, L"てst", 3, result, GGI_MARK_NONEXISTING_GLYPHS);
SelectObject(hdc, old);
DeleteObject(font);
ReleaseDC(NULL, hdc);
}
// Lazily initializes space glyph
static Glyph initSpaceGlyph(HDC dc, Glyph* spaceGlyph)
{
if (*spaceGlyph)
return *spaceGlyph;
static wchar_t space = ' ';
GetGlyphIndices(dc, &space, 1, spaceGlyph, 0);
return *spaceGlyph;
}
WORD getSpaceGlyph(HFONT hfont)
{
HWndDC dc(0);
HGDIOBJ oldFont = SelectObject(dc, hfont);
WCHAR space = L' ';
WORD spaceGlyph = 0;
GetGlyphIndices(dc, &space, 1, &spaceGlyph, 0);
SelectObject(dc, oldFont);
return spaceGlyph;
}
static int getGlyphForChar (HDC dc, juce_wchar character)
{
const WCHAR charToTest[] = { (WCHAR) character, 0 };
WORD index = 0;
if (GetGlyphIndices (dc, charToTest, 1, &index, GGI_MARK_NONEXISTING_GLYPHS) == GDI_ERROR
|| index == 0xffff)
return -1;
return index;
}
sBool sFont2D::LetterExists(sChar letter)
{
SelectObject(sGDIDCOffscreen,prv->Font);
sChar in[2];
WORD out[2];
in[0] = letter;
in[1] = 0;
if(GetGlyphIndices(sGDIDCOffscreen,&letter,1,out,GGI_MARK_NONEXISTING_GLYPHS)!=1)
return 0;
return out[0]!=0xffff;
}
/* [fault_status][comm_status] */ error_status_t gdipp_rpc_get_glyph_indices(
/* [in] */ handle_t h_gdipp_rpc,
/* [context_handle_noserialize][in] */ GDIPP_RPC_SESSION_HANDLE h_session,
/* [size_is][string][in] */ const wchar_t *str,
/* [in] */ int count,
/* [size_is][out] */ unsigned short *gi)
{
const gdipp::rpc_session *curr_session = reinterpret_cast<const gdipp::rpc_session *>(h_session);
// TODO: output pointer is not allocated with MIDL_user_allocate
// TODO: return value not returned
GetGlyphIndices(curr_session->font_holder, str, count, gi, GGI_MARK_NONEXISTING_GLYPHS);
return RPC_S_OK;
}
bool GlyphPage::fill(UChar* buffer, unsigned bufferLength, const FontData* fontData)
{
HDC dc = GetDC((HWND)0);
SaveDC(dc);
SelectObject(dc, fontData->m_font.hfont());
TEXTMETRIC tm;
GetTextMetrics(dc, &tm);
WORD localGlyphBuffer[GlyphPage::size];
GetGlyphIndices(dc, buffer, bufferLength, localGlyphBuffer, 0);
for (unsigned i = 0; i < GlyphPage::size; i++)
setGlyphDataForIndex(i, localGlyphBuffer[i], fontData);
RestoreDC(dc, -1);
ReleaseDC(0, dc);
return true;
}
float getStringWidth (const String& text)
{
const CharPointer_UTF16 utf16 (text.toUTF16());
const size_t numChars = utf16.length();
HeapBlock<int16> results (numChars + 1);
results[numChars] = -1;
float x = 0;
if (GetGlyphIndices (dc, utf16, (int) numChars, reinterpret_cast <WORD*> (results.getData()),
GGI_MARK_NONEXISTING_GLYPHS) != GDI_ERROR)
{
for (size_t i = 0; i < numChars; ++i)
x += getKerning (dc, results[i], results[i + 1]);
}
return x;
}
void getGlyphPositions (const String& text, Array <int>& resultGlyphs, Array <float>& xOffsets)
{
const CharPointer_UTF16 utf16 (text.toUTF16());
const size_t numChars = utf16.length();
HeapBlock<int16> results (numChars + 1);
results[numChars] = -1;
float x = 0;
if (GetGlyphIndices (dc, utf16, (int) numChars, reinterpret_cast <WORD*> (results.getData()),
GGI_MARK_NONEXISTING_GLYPHS) != GDI_ERROR)
{
resultGlyphs.ensureStorageAllocated ((int) numChars);
xOffsets.ensureStorageAllocated ((int) numChars + 1);
for (size_t i = 0; i < numChars; ++i)
{
resultGlyphs.add (results[i]);
xOffsets.add (x);
x += getKerning (dc, results[i], results[i + 1]);
}
}
xOffsets.add (x);
}
bool loadGlyphIfPossible (juce_wchar character)
{
HDC dc = FontDCHolder::getInstance()->loadFont (name, isBold, isItalic, 0);
GLYPHMETRICS gm;
// if this is the fallback font, skip checking for the glyph's existence. This is because
// with fonts like Tahoma, GetGlyphIndices can say that a glyph doesn't exist, but it still
// gets correctly created later on.
if (! isFallbackFont)
{
const WCHAR charToTest[] = { (WCHAR) character, 0 };
WORD index = 0;
if (GetGlyphIndices (dc, charToTest, 1, &index, GGI_MARK_NONEXISTING_GLYPHS) != GDI_ERROR
&& index == 0xffff)
{
return false;
}
}
Path glyphPath;
TEXTMETRIC tm;
if (! GetTextMetrics (dc, &tm))
{
addGlyph (character, glyphPath, 0);
return true;
}
const float height = (float) tm.tmHeight;
static const MAT2 identityMatrix = { { 0, 1 }, { 0, 0 }, { 0, 0 }, { 0, 1 } };
const int bufSize = GetGlyphOutline (dc, character, GGO_NATIVE,
&gm, 0, 0, &identityMatrix);
if (bufSize > 0)
{
HeapBlock<char> data (bufSize);
GetGlyphOutline (dc, character, GGO_NATIVE, &gm,
bufSize, data, &identityMatrix);
const TTPOLYGONHEADER* pheader = reinterpret_cast<TTPOLYGONHEADER*> (data.getData());
const float scaleX = 1.0f / height;
const float scaleY = -1.0f / height;
while ((char*) pheader < data + bufSize)
{
float x = scaleX * pheader->pfxStart.x.value;
float y = scaleY * pheader->pfxStart.y.value;
glyphPath.startNewSubPath (x, y);
const TTPOLYCURVE* curve = (const TTPOLYCURVE*) ((const char*) pheader + sizeof (TTPOLYGONHEADER));
const char* const curveEnd = ((const char*) pheader) + pheader->cb;
while ((const char*) curve < curveEnd)
{
if (curve->wType == TT_PRIM_LINE)
{
for (int i = 0; i < curve->cpfx; ++i)
{
x = scaleX * curve->apfx[i].x.value;
y = scaleY * curve->apfx[i].y.value;
glyphPath.lineTo (x, y);
}
}
else if (curve->wType == TT_PRIM_QSPLINE)
{
for (int i = 0; i < curve->cpfx - 1; ++i)
{
const float x2 = scaleX * curve->apfx[i].x.value;
const float y2 = scaleY * curve->apfx[i].y.value;
float x3, y3;
if (i < curve->cpfx - 2)
{
x3 = 0.5f * (x2 + scaleX * curve->apfx[i + 1].x.value);
y3 = 0.5f * (y2 + scaleY * curve->apfx[i + 1].y.value);
}
else
{
x3 = scaleX * curve->apfx[i + 1].x.value;
y3 = scaleY * curve->apfx[i + 1].y.value;
}
glyphPath.quadraticTo (x2, y2, x3, y3);
x = x3;
y = y3;
}
}
curve = (const TTPOLYCURVE*) &(curve->apfx [curve->cpfx]);
}
pheader = (const TTPOLYGONHEADER*) curve;
glyphPath.closeSubPath();
}
}
addGlyph (character, glyphPath, gm.gmCellIncX / height);
int numKPs;
const KERNINGPAIR* const kps = FontDCHolder::getInstance()->getKerningPairs (numKPs);
for (int i = 0; i < numKPs; ++i)
{
if (kps[i].wFirst == character)
addKerningPair (kps[i].wFirst, kps[i].wSecond,
kps[i].iKernAmount / height);
}
return true;
}
// Fills |length| glyphs starting at |offset| in a |page| in the Basic
// Multilingual Plane (<= U+FFFF). The input buffer size should be the
// same as |length|. We can use the standard Windows GDI functions here.
// Returns true if any glyphs were found.
static bool fillBMPGlyphs(unsigned offset,
unsigned length,
UChar* buffer,
GlyphPage* page,
const SimpleFontData* fontData,
bool recurse)
{
HDC dc = GetDC((HWND)0);
HGDIOBJ oldFont = SelectObject(dc, fontData->platformData().hfont());
TEXTMETRIC tm = {0};
if (!GetTextMetrics(dc, &tm)) {
SelectObject(dc, oldFont);
ReleaseDC(0, dc);
if (recurse) {
if (PlatformBridge::ensureFontLoaded(fontData->platformData().hfont()))
return fillBMPGlyphs(offset, length, buffer, page, fontData, false);
fillEmptyGlyphs(page);
return false;
} else {
// FIXME: Handle gracefully the error if this call also fails.
// See http://crbug.com/6401
LOG_ERROR("Unable to get the text metrics after second attempt");
fillEmptyGlyphs(page);
return false;
}
}
// FIXME: GetGlyphIndices() sets each item of localGlyphBuffer[]
// with the one of the values listed below.
// * With the GGI_MARK_NONEXISTING_GLYPHS flag
// + If the font has a glyph available for the character,
// localGlyphBuffer[i] > 0x0.
// + If the font does not have glyphs available for the character,
// localGlyphBuffer[i] = 0x1F (TrueType Collection?) or
// 0xFFFF (OpenType?).
// * Without the GGI_MARK_NONEXISTING_GLYPHS flag
// + If the font has a glyph available for the character,
// localGlyphBuffer[i] > 0x0.
// + If the font does not have glyphs available for the character,
// localGlyphBuffer[i] = 0x80.
// (Windows automatically assigns the glyph for a box character to
// prevent ExtTextOut() from returning errors.)
// To avoid from hurting the rendering performance, this code just
// tells WebKit whether or not the all glyph indices for the given
// characters are 0x80 (i.e. a possibly-invalid glyph) and let it
// use alternative fonts for the characters.
// Although this may cause a problem, it seems to work fine as far as I
// have tested. (Obviously, I need more tests.)
WORD localGlyphBuffer[GlyphPage::size];
// FIXME: I find some Chinese characters can not be correctly displayed
// when call GetGlyphIndices without flag GGI_MARK_NONEXISTING_GLYPHS,
// because the corresponding glyph index is set as 0x20 when current font
// does not have glyphs available for the character. According a blog post
// http://blogs.msdn.com/michkap/archive/2006/06/28/649791.aspx
// I think we should switch to the way about calling GetGlyphIndices with
// flag GGI_MARK_NONEXISTING_GLYPHS, it should be OK according the
// description of MSDN.
// Also according to Jungshik and Hironori's suggestion and modification
// we treat turetype and raster Font as different way when windows version
// is less than Vista.
GetGlyphIndices(dc, buffer, length, localGlyphBuffer, GGI_MARK_NONEXISTING_GLYPHS);
// Copy the output to the GlyphPage
bool haveGlyphs = false;
int invalidGlyph = 0xFFFF;
const DWORD cffTableTag = 0x20464643; // 4-byte identifier for OpenType CFF table ('CFF ').
if (!isVistaOrNewer() && !(tm.tmPitchAndFamily & TMPF_TRUETYPE) && (GetFontData(dc, cffTableTag, 0, 0, 0) == GDI_ERROR))
invalidGlyph = 0x1F;
Glyph spaceGlyph = 0; // Glyph for a space. Lazily filled.
for (unsigned i = 0; i < length; i++) {
UChar c = buffer[i];
Glyph glyph = localGlyphBuffer[i];
const SimpleFontData* glyphFontData = fontData;
// When this character should be a space, we ignore whatever the font
// says and use a space. Otherwise, if fonts don't map one of these
// space or zero width glyphs, we will get a box.
if (Font::treatAsSpace(c)) {
// Hard code the glyph indices for characters that should be
// treated like spaces.
glyph = initSpaceGlyph(dc, &spaceGlyph);
} else if (glyph == invalidGlyph) {
// WebKit expects both the glyph index and FontData
// pointer to be 0 if the glyph is not present
glyph = 0;
glyphFontData = 0;
} else
haveGlyphs = true;
page->setGlyphDataForCharacter(offset + i, glyph, glyphFontData);
}
SelectObject(dc, oldFont);
ReleaseDC(0, dc);
return haveGlyphs;
}
