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winamp/Src/freetypewac/freetypefont.cpp

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Initial community commit
2024-09-24 12:54:57 +00:00
#include "precomp.h"
// ============================================================================================================================================================
// Font abstract class + statics to install TT fonts and Bitmap fonts
// ============================================================================================================================================================
#include "freetypefont.h"
#include <tataki/canvas/ifc_canvas.h>
#include <tataki/bitmap/bitmap.h>
#include <api/config/items/cfgitem.h>
#include <api/memmgr/api_memmgr.h>
#define DO_KERNING // because Keith say so.
// local prototypes
static const wchar_t *find_break(void *f, const wchar_t *str, int width, int antialias);
#define M_PI 3.14159
#define M_2PI (M_PI*2)
#define FAUX_BOLD_RATIO 0.1f
#define FAUX_ITALIC_DEGREES 12
// This was necessary in Freetype 2.1.3 and bellow, but let us rejoice, they've fixed it
//#define NEED_SMALL_KERNING_HACK
static int freetype_width(void *data, const wchar_t *str, int len, int fixed, int antialias);
/**********************************************************************
*
* FreeType Lib
*
**********************************************************************/
int (*FOLDSTRING)(
DWORD dwMapFlags,
LPCWSTR lpSrcStr,
int cchSrc,
LPWSTR lpDestStr,
int cchDest
)=0;
FreeTypeFont::FreeTypeFont()
{
if (!FOLDSTRING)
{
HMODULE lib = LoadLibraryA("kernel32.dll");
if (lib)
{
//*(void **)&FOLDSTRING = GetProcAddress(lib, "FoldStringW");
}
FreeLibrary(lib);
}
fontbuffer = NULL;
font = NULL;
curboldstrength = 2;
}
int FreeTypeFont::addFontResource2(void *data, int datalen, const wchar_t *name)
{
optionsitem = NULL;
if (FT_Init_FreeType(&flib)) {
DebugString("FreeType: Cannot load freetype!\n");
return 0;
}
last_encoding = -1;
facename = name;
fontbuffer = (char *)data;
fontbufferlen = datalen;
if (FT_New_Memory_Face(flib, (FT_Byte *)fontbuffer, fontbufferlen, 0, &font)) {
DebugString("FreeType: Cannot load font!\n");
return 0;
}
updateCharmap();
return 1;
}
int FreeTypeFont::addFontResource(OSFILETYPE file, const wchar_t *name)
{
optionsitem = NULL;
if (FT_Init_FreeType(&flib))
{
DebugString("FreeType: Cannot load freetype!\n");
return 0;
}
last_encoding = -1;
fontbufferlen = (int)FGETSIZE(file);
fontbuffer = (char *)WASABI_API_MEMMGR->sysMalloc(fontbufferlen);
FREAD(fontbuffer, fontbufferlen, 1, file);
facename = name;
if (FT_New_Memory_Face(flib, (FT_Byte *)fontbuffer, fontbufferlen, 0, &font))
{
DebugString("FreeType: Cannot load font!\n");
return 0;
}
updateCharmap();
return 1;
}
FreeTypeFont::~FreeTypeFont()
{
if (fontbuffer) {
WASABI_API_MEMMGR->sysFree(fontbuffer);
FT_Done_Face(font);
FT_Done_FreeType(flib);
}
}
void FreeTypeFont::updateCharmap()
{
if (optionsitem == NULL)
{
const GUID options_guid =
{ 0x280876cf, 0x48c0, 0x40bc, { 0x8e, 0x86, 0x73, 0xce, 0x6b, 0xb4, 0x62, 0xe5 } };
optionsitem = WASABI_API_CONFIG->config_getCfgItemByGuid(options_guid);
}
int i = 0;
if (optionsitem) i = optionsitem->getDataAsInt( L"Character mapping", 0);
if (i != last_encoding)
{
FT_Done_Face(font);
FT_Done_FreeType(flib);
FT_Init_FreeType(&flib);
FT_New_Memory_Face(flib, (FT_Byte *)fontbuffer, fontbufferlen, 0, &font);
switch (i) {
case -1:
break;
case 0:
FT_Select_Charmap(font, FT_ENCODING_UNICODE);
break;
case 1:
FT_Select_Charmap(font, FT_ENCODING_APPLE_ROMAN);
break;
case 2:
FT_Select_Charmap(font, FT_ENCODING_ADOBE_LATIN_1);
break;
case 3:
FT_Select_Charmap(font, FT_ENCODING_ADOBE_STANDARD);
break;
case 4:
FT_Select_Charmap(font, FT_ENCODING_ADOBE_CUSTOM);
break;
case 5:
FT_Select_Charmap(font, FT_ENCODING_ADOBE_EXPERT);
break;
case 6:
FT_Select_Charmap(font, FT_ENCODING_SJIS);
break;
case 7:
FT_Select_Charmap(font, FT_ENCODING_BIG5);
break;
case 8:
FT_Select_Charmap(font, FT_ENCODING_WANSUNG);
break;
case 9:
FT_Select_Charmap(font, FT_ENCODING_JOHAB);
break;
}
}
last_encoding = i;
}
int FreeTypeFont::tweakSize(const wchar_t *face, int size)
{
if (WCSCASEEQLSAFE(face, L"nonstep")) return size-1;
if (WCSCASEEQLSAFE(face, L"04B_08__")) return size+3;
if (WCSCASEEQLSAFE(face, L"Blocky")) return size+6;
if (WCSCASEEQLSAFE(face, L"04b_03b_")) return size+3;
if (WCSCASEEQLSAFE(face, L"04b_09__")) return size+3;
if (WCSCASEEQLSAFE(face, L"04b_21")) return size+3;
if (WCSCASEEQLSAFE(face, L"Radiosta")) return size+2;
if (WCSCASEEQLSAFE(face, L"ETHNOCENTRIC")) return size+3;
if (WCSCASEEQLSAFE(face, L"ETHNOCEN")) return size+3;
if (WCSCASEEQLSAFE(face, L"pixel")) return size+3;
return size;
}
#define VERTICAL_TPADDING 2
#define VERTICAL_BPADDING 0
#define HORIZONTAL_LPADDING -1
#define HORIZONTAL_RPADDING 1
void FreeTypeFont::prepareCanvas(api_canvas *c, int size, int bold, int opaque, int underline, int italic, COLORREF color, COLORREF bkcolor, const wchar_t *txt, int width, int height)
{
// Our "size" variable is fun to calculate!
//int vRez = GetDeviceCaps(c->getHDC(), LOGPIXELSY); // this needs to be a Canvas method or something.
int fsize = tweakSize(facename, size);
int nHeight = MulDiv(fsize << 6, 72, 96);
FT_Set_Char_Size(font, 0, nHeight, 0, 0);
updateCharmap();
font->style_flags = 0;
if (bold)
{
font->style_flags |= FT_STYLE_FLAG_BOLD;
curboldstrength = bold;//(bold && c->getTextAntialias()) ? 2 : bold;
}
if (italic)
font->style_flags |= FT_STYLE_FLAG_ITALIC;
if (underline)
font->underline_thickness = 1;
else
font->underline_thickness = 0;
if (height == -1 || width == -1) {
getTextExtent(c, txt, &width, &height, size, bold, underline, italic, 0);
}
blt = new SkinBitmap(width+1, height, color & 0xffffff);
blt->setHasAlpha(1);
}
void FreeTypeFont::restoreCanvas(api_canvas *c, int x, int y)
{
unsigned int *bits = (unsigned int *)blt->getBits();
int n = blt->getWidth() * blt->getHeight();
#ifndef NO_MMX
if (Blenders::MMX_AVAILABLE())
for (int i = 0; i < n; i++)
*bits++ = Blenders::BLEND_MUL_MMX(*bits | 0xff000000, *bits >> 24);
else
#endif
for (int i = 0; i < n; i++)
*bits++ = Blenders::BLEND_MUL(*bits | 0xff000000, *bits >> 24);
#ifndef NO_MMX
Blenders::BLEND_MMX_END();
#endif
blt->blit(c, x + HORIZONTAL_LPADDING, y + VERTICAL_TPADDING);
delete blt;
blt = NULL;
}
int FreeTypeFont::getAscent()
{
FT_Glyph glyph;
FT_BBox box;
FT_Load_Glyph(font, FT_Get_Char_Index(font, 'M'), FT_LOAD_DEFAULT);
FT_Get_Glyph(font->glyph, &glyph);
FT_Glyph_Get_CBox(glyph, ft_glyph_bbox_unscaled, &box);
FT_Done_Glyph(glyph);
return box.yMax >> 6;
}
void FreeTypeFont::drawText(int x, int y, const wchar_t *wtxt, int len, COLORREF color, int antialias)
{
POINT pen = { x << 6, y};
// we start left to right
direction = 1;
WCHAR *neutral = NULL;
WCHAR *rtlstr = NULL;
wchar_t *freeme = 0;
/* TODO: change this to be
AutoChar ucs4(txt, 12000, WC_COMPOSITECHECK); // convert from UTF-16 to 'raw' Unicode
However, we have to re-write the LTR part of the code below
*/
if (FOLDSTRING)
{
wchar_t *txt = WMALLOC((len+1));
FOLDSTRING(MAP_PRECOMPOSED, wtxt, -1, txt, len+1);
freeme=txt;
wtxt=txt;
}
lastchar = 0;
for (int i=0 ; *wtxt && i<len;)
{
WORD cur_dir;
GetStringTypeExW(LOCALE_SYSTEM_DEFAULT, CT_CTYPE2, wtxt, 1, &cur_dir);
if (cur_dir == C2_RIGHTTOLEFT)
{
// we're now about to write some right-to-left text
// we need to scan the string to determine the length of this right-to-left block
if (!neutral) { neutral = WMALLOC(len+1); }
if (!rtlstr) { rtlstr = WMALLOC(len+1); }
rtlstr[0] = 0;
neutral[0] = 0;
const wchar_t *p = wtxt;
while (1)
{
WORD char_dir;
if (*p)
{
GetStringTypeExW(LOCALE_SYSTEM_DEFAULT, CT_CTYPE2, p, 1, &char_dir);
if (char_dir != C2_RIGHTTOLEFT && char_dir != C2_LEFTTORIGHT)
{
size_t l = wcslen(neutral);
neutral[l] = *p;
neutral[l+1] = 0;
}
}
if (!*p || char_dir == C2_LEFTTORIGHT)
{
// we now need to write rtlstr as right-to-left
int w = freetype_width(font, rtlstr, (int)wcslen(rtlstr), 1, antialias); // this is in fixed point units
// save current pen position
int oldpenx = pen.x;
// jump to the end of the block
pen.x += w;
p = rtlstr;
direction = -1;
while (p && *p)
{
// move to the left by the width of the char
pen.x -= freetype_width(font, p, 1, 1, antialias);
// render the rtl character
drawChar(pen.x, pen.y, *p, color, antialias);
p++;
}
// now jump our to the end of the rtl block
pen.x = oldpenx + w;
// skip what we just printed from the source string
wtxt += wcslen(rtlstr);
// and continue like nothing happened
direction = 1;
break;
}
else if (char_dir == C2_RIGHTTOLEFT)
{
wcscat(rtlstr, neutral);
*neutral = 0;
size_t l = wcslen(rtlstr);
rtlstr[l] = *p;
rtlstr[l+1] = 0;
}
p++;
}
}
else
{
pen.x += drawChar(pen.x, pen.y, *wtxt, color, antialias);
wtxt++;
}
}
if (rtlstr) FREE(rtlstr);
if (neutral) FREE(neutral);
if (freeme) FREE(freeme);
}
int FreeTypeFont::drawChar(int x0, int y0, unsigned long c, COLORREF color, int antialias)
{
unsigned int *bits = (unsigned int *)blt->getBits();
int width = blt->getWidth();
int height = blt->getHeight();
x0;
FT_BitmapGlyph ftg;
int glyph_index = FT_Get_Char_Index(font, c);
FT_Vector delta = { 0, 0 };
#ifdef DO_KERNING
if (lastchar && FT_HAS_KERNING(font)) {
FT_Get_Kerning(font, lastchar, glyph_index, FT_KERNING_DEFAULT, &delta);
x0 += delta.x;
}
#endif
int rc = FT_Load_Glyph(font, glyph_index, FT_LOAD_DEFAULT|FT_LOAD_NO_BITMAP);
if (rc)
return 0;
rc = FT_Get_Glyph(font->glyph, (FT_Glyph*)&ftg);
if (rc)
return 0;
if (font->style_flags & FT_STYLE_FLAG_ITALIC)
{
FT_Matrix mat;
// sets up the matrix, 0 degrees
double sintheta = sin(0.0);
double costheta = cos(0.0);
mat.xx = (FT_Fixed)(costheta * (1<<16));
mat.xy = (FT_Fixed)(sintheta * (1<<16));
mat.yx = -mat.xy;
mat.yy = mat.xx;
// shear the vectors for italic, 10 to 12 deg suggested
FT_Fixed f = (FT_Fixed)(tan(M_2PI/(360/FAUX_ITALIC_DEGREES)) * (1<<16));
mat.xy += FT_MulFix(f, mat.xx);
mat.yy += FT_MulFix(f, mat.yx);
// do the transform
FT_Vector v = {0,0};
FT_Vector_Transform(&v, &mat);
FT_Glyph_Transform((FT_Glyph)ftg, &mat, &v);
}
// get the glyph
rc = FT_Glyph_To_Bitmap((FT_Glyph*)&ftg, antialias?ft_render_mode_normal:ft_render_mode_mono, NULL, 1);
if (rc) {
FT_Done_Glyph((FT_Glyph)ftg);
return 0;
}
FT_Bitmap *bmp = &ftg->bitmap;
int r = 1;
if (font->style_flags & FT_STYLE_FLAG_BOLD)
r = MAX((int)((float)(font->glyph->advance.x >> 6) * FAUX_BOLD_RATIO), 2);
int ys = MAX(0, y0 - ftg->top);
int ye = MIN(height, (int)(y0 + bmp->rows - ftg->top));
int xs = MAX(0, (x0 >> 6) + ftg->left);
int xe = MIN(width, (int)((x0 >> 6) + ftg->left + bmp->width));
unsigned char *_bmpbits = bmp->buffer + (ys + ftg->top - y0) * bmp->pitch + (xs - ftg->left - (x0 >> 6));
unsigned int *_linebits = (unsigned int *)(bits + ys * width + xs);
if (ftg->bitmap.pixel_mode == FT_PIXEL_MODE_GRAY) {
for (int z = 0; z < r; z++) {
unsigned char *bmpbits = _bmpbits;
unsigned int *linebits = _linebits + z;
for (int y = ys; y < ye; y++) {
if (z > 0) {
for (int x = xs; x < xe; x++) {
if (x != width-z) {
*linebits |= overlay((int)(*linebits >> 24), (int)*bmpbits, curboldstrength, r, z) << 24;
linebits++; bmpbits++;
} else {
linebits++; bmpbits++;
}
}
} else {
for (int x = xs; x < xe; x++)
*linebits++ |= *bmpbits++ << 24;
}
bmpbits += bmp->pitch - (xe - xs);
linebits += width - (xe - xs);
}
}
} else if (ftg->bitmap.pixel_mode == FT_PIXEL_MODE_MONO) {
for (int z = 0; z < r; z++) {
unsigned char *bmpbits = _bmpbits;
unsigned int *linebits = _linebits + z;
for (int y = ys; y < ye; y++) {
for (int x = xs; x < xe; x++) {
/* if (y == ys || y == ye-1 || x == xs || x == xe-1)
*linebits++ |= 0xFF << 24;
else
linebits++;*/
int byte = (x-xs)>>3;
*linebits++ |= (*(bmpbits + byte) & (1 << (7-((x-xs)-(byte<<3)))) ? 0xFF : 0) << 24;
}
bmpbits += bmp->pitch;
linebits += width - (xe - xs);
}
}
} else {
// simply draw rectangles
for (int z = 0; z < r; z++) {
unsigned char *bmpbits = _bmpbits;
unsigned int *linebits = _linebits + z;
for (int y = ys; y < ye; y++) {
for (int x = xs; x < xe; x++) {
if (y == ys || y == ye-1 || x == xs || x == xe-1)
*linebits++ |= 0xFF << 24;
else
linebits++;
}
bmpbits += bmp->pitch;
linebits += width - (xe - xs);
}
}
}
FT_Done_Glyph((FT_Glyph)ftg);
lastchar = glyph_index;
return font->glyph->advance.x + delta.x + ((r - 1) << 6);
}
void FreeTypeFont::textOut(api_canvas *c, int x, int y, const wchar_t *txt, int size, int bold, int opaque, int underline, int italic, COLORREF color, COLORREF bkcolor, int xoffset, int yoffset, int antialias)
{
color = RGBTOBGR(color);
bkcolor = RGBTOBGR(bkcolor);
y++; x++;
prepareCanvas(c, size, bold, opaque, underline, italic, color, bkcolor, txt);
int maxheight = getAscent();
drawText(0, maxheight, txt, (int)wcslen(txt), color, antialias);
/* POINT pen = { 0, maxheight };
lastchar = 0;
for (; *txt; txt++) {
pen.x += drawChar(pen.x, pen.y, *txt, color);
}*/
restoreCanvas(c, x + xoffset , y + yoffset);
}
void FreeTypeFont::textOut2(api_canvas *c, int x, int y, int w, int h, const wchar_t *txt, int size, int bold, int opaque, int underline, int italic, int align, COLORREF color, COLORREF bkcolor, int xoffset, int yoffset, int antialias)
{
color = RGBTOBGR(color);
bkcolor = RGBTOBGR(bkcolor);
y++; x++;
prepareCanvas(c, size, bold, opaque, underline, italic, color, bkcolor, txt, w, h);
int maxheight = getAscent();
int width = getTextWidth(c,txt,size,bold,underline,italic,antialias);
int xstart = 0;
if (align == DT_RIGHT)
{
xstart = w - width;
}
else if (align == DT_CENTER)
{
xstart = (w - width) / 2;
}
drawText(xstart, maxheight, txt, (int)wcslen(txt), color, antialias);
/* POINT pen = { xstart << 6, maxheight };
lastchar = 0;
for (; *txt; txt++) {
pen.x += drawChar(pen.x, pen.y, *txt, color);
}*/
restoreCanvas(c, x + xoffset , y + yoffset);
}
void FreeTypeFont::textOutEllipsed(api_canvas *c, int x, int y, int w, int h, const wchar_t *txt, int size, int bold, int opaque, int underline, int italic, int align, COLORREF color, COLORREF bkcolor, int xoffset, int yoffset, int antialias)
{
color = RGBTOBGR(color);
bkcolor = RGBTOBGR(bkcolor);
y++; x++;
if (txt == NULL)
return;
RECT r;
r.left = x+xoffset;
r.top = y+yoffset;
r.right = r.left + w;
r.bottom = r.top + h;
prepareCanvas(c, size, bold, opaque, underline, italic, color, bkcolor, txt, w, h);
int len = ((int)wcslen(txt) + 3);
wchar_t *tmp = (wchar_t *)MALLOC(sizeof(wchar_t) * len);
wcsncpy(tmp, txt, len);
int width, height;
width = getTextWidth(c, txt, size, bold, underline, italic, (int)antialias);
height = getAscent();
int dddw = getTextWidth(c, L"...", size, bold, underline, italic, antialias);
if (width > r.right - r.left)
{
wchar_t *p = tmp + wcslen(tmp);
width = r.right - r.left - dddw;
while(p > tmp &&
getTextWidth(c,tmp,size,bold,underline,italic,antialias) > width)
{
*p-- = '\0';
}
wcscpy(p, L"...");
}
drawText(0, height, tmp, (int)wcslen(tmp), color, antialias);
/* POINT pen = { 0, height };
lastchar = 0;
for (char *p = tmp; *p; p++) {
pen.x += drawChar(pen.x, pen.y, *p, color);
}*/
FREE(tmp);
restoreCanvas(c, r.left, r.top);
}
static int freetype_width(void *data, const wchar_t *str, int len, int fixed, int antialias)
{
FT_Face font = (FT_Face)data;
int w = 0;
int prev, index;
const wchar_t *p;
int count = 0;
for (p = str; *p && count < len;)
{
FT_Vector delta = { 0, 0 };
FT_BitmapGlyph ftg;
index = FT_Get_Char_Index(font, *p);
#ifdef DO_KERNING
if (w > 0 && FT_HAS_KERNING(font)) {
FT_Get_Kerning(font, prev, index, ft_kerning_default, &delta);
}
#endif
int rc = FT_Load_Glyph(font, index, FT_LOAD_DEFAULT|FT_LOAD_NO_BITMAP);
if (rc)
{
p++;
count++;
continue;
}
w += (delta.x + font->glyph->advance.x);
prev = index;
rc = FT_Get_Glyph(font->glyph, (FT_Glyph*)&ftg);
if (rc)
{
p++;
count++;
continue;
}
if (font->style_flags & FT_STYLE_FLAG_ITALIC)
{
FT_Matrix mat;
// sets up the matrix, 0 degrees
double sintheta = sin(0.0);
double costheta = cos(0.0);
mat.xx = (FT_Fixed)(costheta * (1<<16));
mat.xy = (FT_Fixed)(sintheta * (1<<16));
mat.yx = -mat.xy;
mat.yy = mat.xx;
// shear the vectors for italic, 10 to 12 deg suggested
FT_Fixed f = (FT_Fixed)(tan(M_2PI/(360/FAUX_ITALIC_DEGREES)) * (1<<16));
mat.xy += FT_MulFix(f, mat.xx);
mat.yy += FT_MulFix(f, mat.yx);
// do the transform
FT_Vector v = {0,0};
FT_Vector_Transform(&v, &mat);
FT_Glyph_Transform((FT_Glyph)ftg, &mat, &v);
}
// get the glyph
rc = FT_Glyph_To_Bitmap((FT_Glyph*)&ftg, antialias?ft_render_mode_normal:ft_render_mode_mono, NULL, 1);
if (rc)
{
FT_Done_Glyph((FT_Glyph)ftg);
p++;
count++;
continue;
}
FT_Bitmap *bmp = &ftg->bitmap;
int ys = MAX(0, ftg->top);
int ye = bmp->rows - ftg->top;
int xs = MAX(0, ftg->left);
int xe = ftg->left + bmp->width;
FT_Done_Glyph((FT_Glyph)ftg);
int r = 1;
if (font->style_flags & FT_STYLE_FLAG_BOLD)
{
r = MAX((int)((float)(font->glyph->advance.x >> 6) * FAUX_BOLD_RATIO), 2);
}
w += ((r - 1) << 6);
p++;
count++;
}
if (fixed) return w;
return (w >> 6);
}
void FreeTypeFont::textOutWrapped(api_canvas *c, int x, int y, int w, int h, const wchar_t *txt, int size, int bold, int opaque, int underline, int italic, int align, COLORREF color, COLORREF bkcolor, int xoffset, int yoffset, int antialias)
{
color = RGBTOBGR(color);
bkcolor = RGBTOBGR(bkcolor);
y++; x++;
prepareCanvas(c, size, bold, opaque, underline, italic, color, bkcolor, txt, w, h);
int ascent = getAscent();
int descent = getTextHeight2(c, size, bold, underline, italic, antialias);
descent -= ascent;
int yoff = ascent;
const wchar_t *cur = txt, *next;
int length = (int)wcslen(txt);
//NO.
//for(int yoff = ascent;
for(yoff = ascent;
yoff < h;
yoff += ascent + descent) {
next = find_break(font, cur, w, antialias);
/* POINT pen = { 0, yoff };
lastchar = 0;
for (; cur < next; cur++) {
pen.x += drawChar(pen.x, pen.y, *cur, color);
}*/
drawText(0, yoff, cur, (int)(next-cur), color, antialias);
cur = next;
while (cur && *cur && *cur == ' ')
cur++;
if (*cur == '\r' || *cur == '\n') cur++;
if (cur >= txt + length)
break;
}
restoreCanvas(c, x + xoffset , y + yoffset);
}
void FreeTypeFont::textOutWrappedPathed(api_canvas *c, int x, int y, int w, const wchar_t *txt, int size, int bold, int opaque, int underline, int italic, int align, COLORREF color, COLORREF bkcolor, int xoffset, int yoffset, int antialias)
{
color = RGBTOBGR(color);
bkcolor = RGBTOBGR(bkcolor);
DebugString("writeme -- FreeTypeFont::textOutWrappedPathed...\n");
}
void FreeTypeFont::textOutCentered(api_canvas *c, RECT *r, const wchar_t *txt, int size, int bold, int opaque, int underline, int italic, int align, COLORREF color, COLORREF bkcolor, int xoffset, int yoffset, int antialias)
{
color = RGBTOBGR(color);
bkcolor = RGBTOBGR(bkcolor);
r->top++;
r->left++;
RECT rr = *r;
rr.left += xoffset;
rr.right += xoffset;
rr.top += yoffset;
rr.bottom += yoffset;
prepareCanvas(c, size, bold, opaque, underline, italic, color, bkcolor, txt, rr.right - rr.left, rr.bottom - rr.top);
int width, height;
height = getAscent();
width = getTextWidth(c, txt, size, bold, underline, italic, (int)antialias);
drawText(((rr.right - rr.left - width) / 2), height, txt, (int)wcslen(txt), color, (int)antialias);
/* POINT pen = { ((rr.right - rr.left - width) / 2) << 6, height };
lastchar = 0;
for (; *txt; txt++) {
pen.x += drawChar(pen.x, pen.y, *txt, color);
}*/
restoreCanvas(c, rr.left, rr.top);
}
int FreeTypeFont::getTextWidth(api_canvas *c, const wchar_t *text, int size, int bold, int underline, int italic, int antialiased)
{
int w;
updateCharmap();
getTextExtent(c, text, &w, NULL, size, bold, underline, italic, antialiased);
return w;
}
int FreeTypeFont::getTextHeight(api_canvas *c, const wchar_t *text, int size, int bold, int underline, int italic, int antialiased) {
int h;
updateCharmap();
getTextExtent(c, text, NULL, &h, size, bold, underline, italic, antialiased);
{
// calcul for multiline text
const wchar_t *p=text;
int n=0;
while(p && *p!=0) if(*p++=='\n') n++;
if(n) h*=(n+1);
}
return h;
}
int FreeTypeFont::getTextHeight2(api_canvas *c, int size, int bold, int underline, int italic, int antialiased)
{
return getTextHeight(c, L"Mg", size, bold, underline, italic, antialiased);
}
void FreeTypeFont::getTextExtent(api_canvas *c, const wchar_t *txt, int *w, int *h, int size, int bold, int underline, int italic, int antialias)
{
updateCharmap();
// Our "size" variable is fun to calculate!
//int vRez = GetDeviceCaps(c->getHDC(), LOGPIXELSY); // this needs to be a Canvas method or something.
int fsize = tweakSize(facename, size);
int nHeight = MulDiv(fsize << 6, 72, 96);
FT_Set_Char_Size(font, 0, nHeight, 0, 0);
font->style_flags = 0;
if (bold)
font->style_flags |= FT_STYLE_FLAG_BOLD;
if (italic)
font->style_flags |= FT_STYLE_FLAG_ITALIC;
if (underline)
font->underline_thickness = 1;
else
font->underline_thickness = 0;
SIZE rsize={0,0};
ASSERT(txt != NULL);
if (*txt == 0)
{
if (w != NULL) *w = 0;
if (h != NULL) *h = 0;
return;
}
FT_BBox box;
FT_Glyph glyph;
int minh = 0, maxh = 0;
if (w)
*w = freetype_width(font, txt, (int)wcslen(txt), 0, antialias) + HORIZONTAL_RPADDING + HORIZONTAL_LPADDING;
if (h)
{
FT_Load_Glyph(font, FT_Get_Char_Index(font, 'M'), FT_LOAD_DEFAULT);
FT_Get_Glyph(font->glyph, &glyph);
FT_Glyph_Get_CBox(glyph, ft_glyph_bbox_unscaled, &box);
maxh = box.yMax;
FT_Done_Glyph(glyph);
FT_Load_Glyph(font, FT_Get_Char_Index(font, 'g'), FT_LOAD_DEFAULT);
FT_Get_Glyph(font->glyph, &glyph);
FT_Glyph_Get_CBox(glyph, ft_glyph_bbox_unscaled, &box);
minh = box.yMin;
FT_Done_Glyph(glyph);
*h = ((maxh - minh) >> 6) + VERTICAL_TPADDING + VERTICAL_BPADDING;
}
}
int FreeTypeFont::isBitmap()
{
return 0;
}
static const wchar_t *find_break(void *f, const wchar_t *str, int width, int antialias)
{
const wchar_t *softret, *lastsoft, *hardret;
if (freetype_width(f, str, (int)wcslen(str), 0, antialias) <= width)
return str + wcslen(str);
for(hardret = str; *hardret; hardret ++)
if (*hardret == '\r' || *hardret == '\n')
break;
if (hardret && freetype_width(f, str, (int)(hardret - str), 0, antialias) <= width) {
return hardret;
}
for(softret = str; *softret && !isspace(*softret); softret++)
;
if (freetype_width(f, str, (int)(softret - str), 0, antialias) <= width)
{
do
{
lastsoft = softret;
for(softret = lastsoft+1; *softret && !isspace(*softret); softret++)
;
} while (lastsoft && *lastsoft && freetype_width(f, str, (int)(softret - str), 0, antialias) <= width);
softret = lastsoft;
}
else
{
for(softret = str; *softret; softret++)
if (freetype_width(f, str, (int)(softret - str), 0, antialias) > width)
break;
softret--;
}
return softret;
}
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