void DynamicFontData::set_font_data(const DVector<uint8_t>& p_font) {
//clear caches and stuff
ERR_FAIL_COND(font_data.size()) ;
font_data=p_font;
lock();
if (valid) {
stbtt_GetFontVMetrics(&info, &ascent, &descent, &linegap);
descent=-descent + linegap;
for(int i=32;i<1024;i++) {
for(int j=32;j<1024;j++) {
int kern = stbtt_GetCodepointKernAdvance(&info, i,j);
if (kern!=0) {
KerningPairKey kpk;
kpk.A=i;
kpk.B=j;
kerning_map[kpk]=kern;
}
}
}
}
unlock();
//clear existing stuff
ERR_FAIL_COND(!valid);
}
int __stdcall get_length(char *text, char *buffer, int height, int max_len)
{
stbtt_fontinfo font;
int i,j,ascent,baseline,ch,xpos=0;
float scale=0;
baseline=10;
if (buffer==-1) {stbtt_InitFont(&font, pdf_font_DroidSans,stbtt_GetFontOffsetForIndex(pdf_font_DroidSans,0) );} else {stbtt_InitFont(&font, buffer,stbtt_GetFontOffsetForIndex(buffer,0) );kol_board_puts("Font loaded..\n");}
//kol_board_puts("Engine init..\n");
//kol_board_puti(&screen);
scale = stbtt_ScaleForPixelHeight(&font, height*3/4);
while (dos2utf(text[ch])) {
// kol_board_puts("new symbol...\n");
int advance,lsb;
stbtt_GetCodepointHMetrics(&font, dos2utf(text[ch]), &advance, &lsb);
xpos += (advance * scale);
if ((int)xpos>max_len) return ch;
if (text[ch+1])
xpos += scale*stbtt_GetCodepointKernAdvance(&font, dos2utf(text[ch]),dos2utf(text[ch+1]));
++ch;
}
return ch;
}
float TruetypeFont::kerningOffset(uint32_t previousChar, uint32_t currentChar)
{
float result = 0.0f;
if(_fontinfo->kern) {
result = stbtt_GetCodepointKernAdvance(_fontinfo, previousChar, currentChar);
result *= _vscale;
}
return result;
}
JNIEXPORT jint JNICALL Java_com_badlogic_gdx_graphics_g2d_stbtt_StbTrueType_getCodepointKernAdvance(JNIEnv* env, jclass clazz, jlong info, jint char1, jint char2) {
//@line:75
return stbtt_GetCodepointKernAdvance((stbtt_fontinfo*)info, char1, char2);
}
void Font::measureText(const std::wstring str, int& width, int& height, int max_width) {
if(!isLoaded())
{
return NULL;
}
Image char_render;
std::vector<unsigned char> char_raster;
int bx, by, bw, bh;
int ascent, descent, lineGap;
int sx = 0, sy = 0;
stbtt_GetFontVMetrics(&m_info, &ascent, &descent, &lineGap);
ascent *= m_scale;
descent *= m_scale;
lineGap *= m_scale;
width = 0;
height = 0;
for(int i = 0; i < str.length(); i++) {
if(str[i] == L'\n') {
sy += ascent - descent + lineGap;
sx = 0;
continue;
}
stbtt_GetCodepointBitmapBox(&m_info, str[i], m_scale, m_scale,
&bx, &by, &bw, &bh);
int cwidth = bw - bx;
int cheight = bh - by;
int oy = ascent + by;
if(max_width > 0 && sx + cwidth > max_width) {
sy += ascent - descent + lineGap;
sx = 0;
}
int advance;
stbtt_GetCodepointHMetrics(&m_info, str[i], &advance, 0);
if(sy + oy + cheight > height) {
height = sy + oy + cheight;
}
if(sx + cwidth > width) {
width = sx + cwidth;
}
sx += advance * m_scale;
int kerning = stbtt_GetCodepointKernAdvance(&m_info, str[i], str[i + 1]);
sx += kerning * m_scale;
}
}
int __stdcall picture(char *text, char *buffer, char *screen1, int width, int height)
{
//unsigned char *screen;
//screen=zmalloc(20*78);
//kol_board_puts(screen);
//kol_board_puts("It was text\n");
stbtt_fontinfo font;
int i,j,ascent,baseline,descent,ch=0;
float scale, xpos=0;
//baseline=10;
kol_board_puts("Font address:\n");
//kol_board_puti(buffer);
if (buffer==-1) {stbtt_InitFont(&font, pdf_font_DroidSans,stbtt_GetFontOffsetForIndex(pdf_font_DroidSans,0) );kol_board_puts("default font\n");} else {stbtt_InitFont(&font, buffer,stbtt_GetFontOffsetForIndex(buffer,0) );kol_board_puts("Font loaded..\n");}
//kol_board_puti(&screen);
scale = stbtt_ScaleForPixelHeight(&font, height*3/4);
//stbtt_GetFontVMetrics(&font, &ascent,0,0);
stbtt_GetFontVMetrics(&font, &ascent,&descent,0); //lev
//baseline = (int) (ascent*scale);
baseline = (int) ((ascent-descent)*scale); //lev
//kol_board_puts("Text render:\n");
while (dos2utf(text[ch])) {
//kol_board_puts("new symbol...\n");
int advance,lsb,x0,y0,x1,y1;
//float x_shift = xpos - (float) i_floor(xpos);
// kol_board_puts("floor called!\n");
stbtt_GetCodepointHMetrics(&font, dos2utf(text[ch]), &advance, &lsb);
stbtt_GetCodepointBitmapBoxSubpixel(&font, dos2utf(text[ch]), scale,scale,0,0, &x0,&y0,&x1,&y1);
//10= y0, 20=y1-y0 or so
stbtt_MakeCodepointBitmapSubpixel(&font, &screen1[(baseline + y0)*width+ (int)xpos + x0], x1-x0,y1-y0, width, scale,scale,0,0, dos2utf(text[ch]));
// note that this stomps the old data, so where character boxes overlap (e.g. 'lj') it's wrong
// because this API is really for baking character bitmaps into textures. if you want to do this,
// you need to render the bitmap to a temp buffer, then\n\t"alpha blend" that into the working buffer
xpos += (advance * scale);
if (text[ch+1])
xpos += scale*stbtt_GetCodepointKernAdvance(&font, dos2utf(text[ch]),dos2utf(text[ch+1]));
++ch;
}
//zmemcpy(screen1,bitmap,20*20);
//kol_board_puts("finished...\n");
return 0;
}
void GlFont::InitialiseFont(const unsigned char* ttf_buffer, float pixel_height, int tex_w, int tex_h)
{
font_height_px = pixel_height;
this->tex_w = tex_w;
this->tex_h = tex_h;
font_bitmap = new unsigned char[tex_w*tex_h];
const int offset = 0;
stbtt_fontinfo f;
if (!stbtt_InitFont(&f, ttf_buffer, offset)) {
throw std::runtime_error("Unable to initialise font");
}
float scale = stbtt_ScaleForPixelHeight(&f, pixel_height);
STBTT_memset(font_bitmap, 0, tex_w*tex_h);
int x = 1;
int y = 1;
int bottom_y = 1;
// Generate bitmap and char indices
for (int i=0; i < NUM_CHARS; ++i) {
int advance, lsb, x0,y0,x1,y1,gw,gh;
int g = stbtt_FindGlyphIndex(&f, FIRST_CHAR + i);
stbtt_GetGlyphHMetrics(&f, g, &advance, &lsb);
stbtt_GetGlyphBitmapBox(&f, g, scale,scale, &x0,&y0,&x1,&y1);
gw = x1-x0;
gh = y1-y0;
if (x + gw + 1 >= tex_w)
y = bottom_y, x = 1; // advance to next row
if (y + gh + 1 >= tex_h) // check if it fits vertically AFTER potentially moving to next row
throw std::runtime_error("Unable to initialise font");
STBTT_assert(x+gw < tex_w);
STBTT_assert(y+gh < tex_h);
stbtt_MakeGlyphBitmap(&f, font_bitmap+x+y*tex_w, gw,gh,tex_w, scale,scale, g);
// Adjust offset for edges of pixels
chardata[i] = GlChar(tex_w,tex_h, x, y, gw, gh, scale*advance, x0 -0.5, -y0 -0.5);
x = x + gw + 1;
if (y+gh+1 > bottom_y)
bottom_y = y+gh+1;
}
// Generate kern table
for (int i=0; i < NUM_CHARS; ++i) {
for (int j=0; j < NUM_CHARS; ++j) {
kern_table[i*NUM_CHARS+j] = scale * stbtt_GetCodepointKernAdvance(&f,i,j);
}
}
}
void Font::drawStringUnicode(int x, int y, const std::wstring& str, Color color, bool top_screen, bool side)
{
if(!isLoaded())
{
return;
}
Image char_render;
std::vector<unsigned char> char_raster;
int bx, by, bw, bh;
int ascent, descent, lineGap;
int sx = 0, sy = 0;
stbtt_GetFontVMetrics(&m_info, &ascent, &descent, &lineGap);
ascent *= m_scale;
descent *= m_scale;
for (unsigned int i = 0; i < str.length(); i++)
{
if(str[i + 1] == L'\n') {
sy += lineGap * m_scale;
sx = 0;
continue;
}
stbtt_GetCodepointBitmapBox(&m_info, str[i], m_scale, m_scale,
&bx, &by, &bw, &bh);
int width = bw - bx;
int height = bh - by;
int oy = ascent + by;
char_raster.resize(width * height);
stbtt_MakeCodepointBitmap(&m_info, &char_raster[0], width, height,
width, m_scale, m_scale, str[i]);
char_render.create(width, height, Color(0, 0, 0, 0));
for (int ix = 0; ix < width; ix++) {
for (int iy = 0; iy < height; iy++) {
if (char_raster[ix + iy * width] != 0)
char_render.putPixel(ix, iy, Color(color.r, color.g, color.b,
char_raster[ix + iy * width]));
}
}
char_render.draw(sx + x, sy + y + oy, top_screen, side);
int advance;
stbtt_GetCodepointHMetrics(&m_info, str[i], &advance, 0);
sx += advance * m_scale;
int kerning = stbtt_GetCodepointKernAdvance(&m_info, str[i], str[i + 1]);
sx += kerning * m_scale;
}
}
void TruetypeFont::Render(const std::string &In, const Vec2 &Position, const Mat4 &Transform)
{
const char* Text = In.c_str();
int Line = 0;
glm::vec3 vOffs(Position.x, Position.y + scale, 0);
if (!IsValid)
return;
UpdateWindowScale();
SetBlendingMode(BLEND_ALPHA);
SetShaderParameters(false, false, false, false, false, true);
WindowFrame.SetUniform(U_COLOR, Red, Green, Blue, Alpha);
SetPrimitiveQuadVBO();
try
{
utf8::iterator<const char*> it(Text, Text, Text + In.length());
utf8::iterator<const char*> itend(Text + In.length(), Text, Text + In.length());
for (; it != itend; ++it)
{
CheckCodepoint(*it); // Force a regeneration of this if necessary
codepdata &cp = GetTexFromCodepoint(*it);
unsigned char* tx = cp.tex;
glm::vec3 trans = vOffs + glm::vec3(cp.xofs, cp.yofs, 0);
glm::mat4 dx;
if (*it == 10) // utf-32 line feed
{
Line++;
vOffs.x = Position.x;
vOffs.y = Position.y + scale * (Line + 1);
continue;
}
dx = Transform * glm::translate(Mat4(), trans) * glm::scale(Mat4(), glm::vec3(cp.w, cp.h, 1));
// do the actual draw?
if (cp.gltx == 0)
{
glGenTextures(1, &cp.gltx);
glBindTexture(GL_TEXTURE_2D, cp.gltx);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, cp.tw, cp.th, 0, GL_ALPHA, GL_UNSIGNED_BYTE, tx);
}
else
glBindTexture(GL_TEXTURE_2D, cp.gltx);
WindowFrame.SetUniform(U_MVP, &(dx[0][0]));
DoQuadDraw();
utf8::iterator<const char*> next = it;
next++;
if (next != itend)
{
float aW = stbtt_GetCodepointKernAdvance(info.get(), *it, *next);
int bW;
stbtt_GetCodepointHMetrics(info.get(), *it, &bW, NULL);
vOffs.x += aW * virtualscale + bW * virtualscale;
}
}
}
#ifndef NDEBUG
catch (utf8::exception &ex)
{
Utility::DebugBreak();
Log::Logf("Invalid UTF-8 string %s was passed. Error type: %s\n", ex.what());
}
#else
catch (...)
{
// nothing
}
#endif
FinalizeDraw();
Image::ForceRebind();
}
int FontRenderer::getKerning(const fm::Uint32 &leftCodePoint,const fm::Uint32 &rightCodePoint) const
{
if (!m_fileContent)
return 0;
return stbtt_ScaleForMappingEmToPixels((stbtt_fontinfo*)m_stbFontInfo, m_currentSize) * stbtt_GetCodepointKernAdvance((stbtt_fontinfo*)m_stbFontInfo, leftCodePoint,rightCodePoint);
}
void Text::setText(const char* text)
{
int length = strlen(text);
if(length > 255) length = 255;
memset(pTextBuffer, 0x00, 256);
memcpy(pTextBuffer, text, length);
const char* p;
int width=0,height=0;
/* calculate font scaling */
LOCK_ACQUIRE(gFtLock);
//float scale = stbtt_ScaleForPixelHeight(gFontInfo, pPixelSize);
float scale = stbtt_ScaleForMappingEmToPixels(gFontInfo, pPixelSize);
int ascent, descent, lineGap;
stbtt_GetFontVMetrics(gFontInfo, &ascent, &descent, &lineGap);
ascent *= scale;
descent *= scale;
height = ascent;
// calculate bitmap size
for (p = pTextBuffer; *p; p++)
{
/* how wide is this character */
int ax;
stbtt_GetCodepointHMetrics(gFontInfo, p[0], &ax, 0);
width += ax * scale;
/* add kerning */
int kern;
kern = stbtt_GetCodepointKernAdvance(gFontInfo, p[0], p[1]);
width += kern * scale;
}
//check if old bitmap exists, and delete it
uint8_t* oldBitmap = pBitmap;
pBitmap = (uint8_t*)malloc(width*height);
if(oldBitmap)
{
free(oldBitmap);
}
memset(pBitmap,0,width*height);
pBitmapWidth = width;
pBitmapHeight = height;
setSizeN(
2.f*((float)pBitmapWidth)/GetCore()->screen_width,
2.f*((float)pBitmapHeight)/GetCore()->screen_width
);
int x=0,y=0;
// render text to buffer
for (p = pTextBuffer; *p; p++)
{
/* get bounding box for character (may be offset to account for chars that dip above or below the line */
int c_x1, c_y1, c_x2, c_y2;
stbtt_GetCodepointBitmapBox(gFontInfo, p[0], scale, scale, &c_x1, &c_y1, &c_x2, &c_y2);
/* compute y (different characters have different heights */
y = ascent + c_y1;
/* render character (stride and offset is important here) */
int byteOffset = x + (y * width);
stbtt_MakeCodepointBitmap(gFontInfo, pBitmap + byteOffset, c_x2 - c_x1, c_y2 - c_y1, width, scale, scale, p[0]);
/* how wide is this character */
int ax;
stbtt_GetCodepointHMetrics(gFontInfo, p[0], &ax, 0);
x += ax * scale;
/* add kerning */
int kern;
kern = stbtt_GetCodepointKernAdvance(gFontInfo, p[0], p[1]);
x += kern * scale;
}
LOCK_RELEASE(gFtLock);
updateBitmap = true;
}
Bytes& StbFontRenderer::RenderText(
const FontPtr& data,
const FontProperties& properties,
cstring text,
Bytes& output,
Size& imageSize)
{
using irect = rect<int>;
auto stb_data = &data->info;
auto scale = properties.scale;
Bytes stringData = Bytes::CreateString(text);
szptr bit_w = 0;
int x = 0;
/* We use this to find kerning character */
auto shadowChar = stringData.begin();
for(auto c : stringData)
{
irect bbox = {};
stbtt_GetCodepointBitmapBox(
stb_data, c, scale, scale, &bbox.x, &bbox.y, &bbox.w, &bbox.h);
int y = properties.ascent + bbox.y, ax = 0, kern = 0;
stbtt_GetCodepointHMetrics(stb_data, c, &ax, nullptr);
kern = stbtt_GetCodepointKernAdvance(stb_data, c, *shadowChar);
x += scale * (ax + kern);
imageSize.w = CMath::max<u32>(imageSize.w, x + (bbox.w - bbox.x));
imageSize.h = CMath::max<u32>(imageSize.h, y + (bbox.h - bbox.y));
}
bit_w = C_FCAST<szptr>(imageSize.w);
output = Bytes::Alloc(imageSize.area());
shadowChar = stringData.begin();
x = 0;
for(auto c : stringData)
{
++shadowChar;
irect bbox = {};
stbtt_GetCodepointBitmapBox(
stb_data, c, scale, scale, &bbox.x, &bbox.y, &bbox.w, &bbox.h);
int y = properties.ascent + bbox.y, ax = 0, kern = 0;
szptr offset = C_FCAST<szptr>(x + y * bit_w);
stbtt_MakeCodepointBitmap(
stb_data,
&output[offset],
(bbox.w - bbox.x),
(bbox.h - bbox.y),
bit_w,
scale,
scale,
c);
stbtt_GetCodepointHMetrics(stb_data, c, &ax, nullptr);
kern = stbtt_GetCodepointKernAdvance(stb_data, c, *shadowChar);
x += scale * (ax + kern);
}
return output;
}