struct TEXT_FONT_GLYPH *textRenderGlyphToCache(TEXT_FONT *font, unsigned int glyph) {
int glyph_index, x1, y1, x2, y2;
struct TEXT_FONT_CACHE *next;
next = font->cache;
glyph_index = stbtt_FindGlyphIndex(&font->face, glyph);
/* Just in case the coords aren't reported correctly o_O */
x1 = y1 = x2 = y2 = 0;
// stbtt_GetCodepointBox(&font->face, glyph_index, &x1, &y1, &x2, &y2);
stbtt_GetCodepointBitmapBox(&font->face, glyph, font->scale, font->scale, &x1, &y1, &x2, &y2);
#if 0
x1 = font->scale * x1;
y1 = font->scale * y1;
x2 = font->scale * x2;
y2 = font->scale * y2;
#endif
while (next != NULL) {
if (textWillGlyphFit(next, x2 - x1, y2 - y1) == 0)
break;
next = next->next;
}
if (next == NULL)
if ((next = textAppendCache(font, font->cache, font->tex_w, font->tex_h)) == NULL)
return NULL;
if (font->cache == NULL)
font->cache = next;
return textRenderGlyph(next, glyph, glyph_index, font);
}
void UniFont::CacheGlyphDefault(const unsigned int* str, int index, int len, int cellCols, int cellRows, Texture* tex, bool* outIsDirty) {
int codePoint = str[index];
int charSize = fontScale + 2;
if (GetInfoForCodepoint(codePoint) == nullptr) {
stbtt_fontinfo* font = nullptr;
unsigned char* cBmp = nullptr;
int cW = 0, cH = 0;
for (int j = 0; j < fontInfos.count; j++) {
if (fontInfos.data[j].low <= codePoint && codePoint <= fontInfos.data[j].high) {
float pixelScale = stbtt_ScaleForPixelHeight(&fontInfos.data[j].info, fontScale);
int glyphIdx = stbtt_FindGlyphIndex(&fontInfos.data[j].info, codePoint);
cBmp = stbtt_GetCodepointBitmap(&fontInfos.data[j].info, 0, pixelScale, codePoint, &cW, &cH, 0, 0);
if (cBmp) {
font = &fontInfos.data[j].info;
break;
}
}
}
if (font != nullptr) {
*outIsDirty = true;
int ascent, descent, lineGap;
stbtt_GetFontVMetrics(font, &ascent, &descent, &lineGap);
float pixelScale = stbtt_ScaleForPixelHeight(font, fontScale);
int cellY = cacheCursor / cellCols;
int cellX = cacheCursor % cellCols;
int startX = cellX * charSize;
int startY = cellY * charSize;
GlyphBlit(tex->texMem, tex->width, tex->height, startX, startY, cBmp, cW, cH);
free(cBmp);
int advanceWidth = 0, leftSideBearing = 0;
stbtt_GetCodepointHMetrics(font, codePoint, &advanceWidth, &leftSideBearing);
int x0, y0, x1, y1;
stbtt_GetCodepointBitmapBox(font, codePoint, pixelScale, pixelScale, &x0, &y0, &x1, &y1);
CodepointInfo pointInfo = {};
pointInfo.codepoint = codePoint;
pointInfo.x = startX;
pointInfo.y = startY;
pointInfo.w = cW;
pointInfo.h = cH;
pointInfo.xOffset = x0;
pointInfo.yOffset = y0;
pointInfo.xAdvance = pixelScale * advanceWidth;
codepointListing.EnsureCapacity(cacheCursor + 1);
codepointListing.count = BNS_MAX(codepointListing.count, cacheCursor + 1);
codepointListing.data[cacheCursor] = pointInfo;
cacheCursor = (cacheCursor + 1) % (cellCols * cellRows);
}
}
}
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;
}
}
fm::rect2i FontRenderer::getGlyphRect(const fm::Uint32 &letter,Glyph::Style /* style */) const
{
float scale = stbtt_ScaleForMappingEmToPixels((stbtt_fontinfo*)m_stbFontInfo, m_currentSize);
int ix0,ix1,iy0,iy1;
stbtt_GetCodepointBitmapBox((stbtt_fontinfo*)m_stbFontInfo, letter, scale, scale, &ix0, &iy0, &ix1, &iy1);
int leftSideBearing, advanceWidth;
stbtt_GetCodepointHMetrics((stbtt_fontinfo*)m_stbFontInfo, letter, &advanceWidth, &leftSideBearing);
return fm::rect2i(fm::vec2i(leftSideBearing*scale,iy0),fm::vec2i(ix1-ix0,iy1-iy0));
}
JNIEXPORT void JNICALL Java_com_badlogic_gdx_graphics_g2d_stbtt_StbTrueType_getCodepointBitmapBox(JNIEnv* env, jclass clazz, jlong info, jint codePoint, jfloat scaleX, jfloat scaleY, jintArray obj_box) {
int* box = (int*)env->GetPrimitiveArrayCritical(obj_box, 0);
//@line:147
int x0, y0, x1, y1;
x0 = y0 = x1 = y1 = 0;
stbtt_GetCodepointBitmapBox((stbtt_fontinfo*)info, codePoint, scaleX, scaleY, &x0, &y0, &x1, &y1);
box[0] = x0;
box[1] = y0;
box[2] = x1;
box[3] = y1;
env->ReleasePrimitiveArrayCritical(obj_box, box, 0);
}
bool TruetypeFont::renderGlyph(char32_t c)
{
bool result = false;
GlyphPtr glyph = char2glyph[c];
if(!glyph)
{
result = true;
glyph.reset(new Glyph);
// glyph->render(face, size, c);
int advance, lsb;
stbtt_GetCodepointHMetrics(_fontinfo, c, &advance, &lsb);
int ix0, iy0, ix1, iy1;
stbtt_GetCodepointBitmapBox(_fontinfo, c, _vscale, _vscale, &ix0, &iy0, &ix1, &iy1);
int width = ix1-ix0;
int height = iy1-iy0;
unsigned char* bmpmem = (unsigned char*)malloc(width*height);
stbtt_MakeCodepointBitmapSubpixel(_fontinfo, bmpmem, width, height, width, _vscale, _vscale, .0, .0, c);
BitmapPtr result(new Bitmap(width,
height,
GL_RGBA,
GL_ALPHA,
bmpmem));
result->flip();
free(bmpmem);
glyph->bitmap = result;
glyph->advance = floorf(advance*_vscale);
glyph->xoffset = floorf(lsb*_vscale);
glyph->yoffset = -iy1;
char2glyph[c] = glyph;
glyphs.push_back(glyph);
}
return result;
}
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;
}
}
fg::Image FontRenderer::renderGlyph(const fm::Uint32 &letter,Glyph::Style style,fm::vec2 *leftDown) const
{
if (!m_fileContent)
return fg::Image();
if (letter == ' ')
{
float scl = stbtt_ScaleForMappingEmToPixels((stbtt_fontinfo*)m_stbFontInfo, m_currentSize);
int ix0,ix1,iy0,iy1;
stbtt_GetCodepointBitmapBox((stbtt_fontinfo*)m_stbFontInfo, 'w', scl, scl, &ix0, &iy0, &ix1, &iy1);
return fg::Image(fm::vec2s(ix1-ix0,iy1-iy0),fg::Color(255,255,255,0));
}
unsigned char *bitmap;
fm::vec2i size,offset;
bitmap = stbtt_GetCodepointBitmap((stbtt_fontinfo*)m_stbFontInfo, 0,stbtt_ScaleForMappingEmToPixels((stbtt_fontinfo*)m_stbFontInfo, m_currentSize), letter, &size.w, &size.h, &offset.x, &offset.y);
if (leftDown)
*leftDown = offset;
fg::Image img;
img.create(size);
Cv(size)
img.set(p,fg::Color(255,bitmap[p.x + p.y*size.w]));
stbtt_FreeBitmap(bitmap,0);
return img;
(void)style;
/*
// if rendering upper/lower index decrease size
unsigned int originalSize = m_currentSize;
if ((style & Glyph::Subscript) xor (style & Glyph::Superscript ))
setCharacterSize(m_currentSize*.7);
// get glyph index
FT_UInt glyphIndex = FT_Get_Char_Index(*((FT_Face*)m_ftFaceData),letter);
// load glyph data
int error = FT_Load_Glyph(*((FT_Face*)m_ftFaceData),glyphIndex,FT_LOAD_FORCE_AUTOHINT | FT_LOAD_DEFAULT);
if (error)
return fg::Image();
FT_Face face = (*((FT_Face*)m_ftFaceData));
// embolden and italicise
if (style & fg::Glyph::Bold)
FT_GlyphSlot_Embolden(face->glyph);
if (style & fg::Glyph::Italic)
FT_GlyphSlot_Oblique(face->glyph);
// render glyph image
error = FT_Render_Glyph( face->glyph,FT_RENDER_MODE_NORMAL);
if (error)
return fg::Image();
// get bitmap details
fm::Size width = face->glyph->bitmap.width;
fm::Size height = face->glyph->bitmap.rows;
std::vector<fm::Uint8> bitmap(face->glyph->bitmap.buffer,face->glyph->bitmap.buffer+width*height);
float offsetx = (face->glyph->metrics.horiBearingX>>6);
float offsety = (face->glyph->metrics.horiBearingY>>6)-float(height);
// manually create upper index if requested
if (style & fg::Glyph::Superscript && !(style & fg::Glyph::Subscript))
{
fm::Size deltaH = height*0.4f;
bitmap.resize(width*(height+deltaH),0);
offsety+=deltaH;
height+=deltaH;
}
// manually create lower index if requested
if (style & fg::Glyph::Subscript && !(style & fg::Glyph::Superscript))
{
fm::Size deltaH = height*0.4f;
bitmap.resize(width*(height+deltaH),0);
offsety-=deltaH;
Cxy(width,height)
{
fm::Uint8 tmp = bitmap[x+int(height+deltaH-y-1)*width];
bitmap[x+int(height+deltaH-y-1)*width] = bitmap[x+int(height-y-1)*width];
bitmap[x+int(height-y-1)*width] = tmp;
}
height+=height/2.f;
}
// reset the size back if needed
if ((style & fg::Glyph::Subscript) xor (style & fg::Glyph::Superscript))
setCharacterSize(originalSize);
// manually strike through and/or underline if requested
for (int i=0;i<bool(style & fg::Glyph::Crossed)+bool(style & fg::Glyph::Underlined);i++)
{
bool crossed = ((style & fg::Glyph::Crossed) && i==0);
int ymax = offsety+height;
float &ymin = offsety;
// if the line would be out of the image (take account the y offset like in '~' as the leeter might not "sit" on the baseline)
int lineW = int(m_metrics.maxH/15.f);
int lineP = int(m_metrics.maxH*(crossed ? 0.2 : 0.0) );
if (ymin > lineP)
{
bitmap.resize(width*(height+int(ymin-lineP)),0);
ymin = lineP;
height = ymax-ymin;
}
else if (ymax < lineW+lineP)
{
bitmap.resize(width*(height+(lineW+lineP-ymax)),0);
ymax = lineW+lineP;
height = ymax-ymin;
}
// simply set the value to one for every pixel in the line
Cx(width)
Cy((unsigned int)(lineW))
bitmap[x+(height-1-y+int(ymin)-lineP)*width] = 255;
}
// manually create outline if requested
if (style & fg::Glyph::Outline)
{
std::vector<fm::Uint8> oldData = bitmap;
bitmap.resize((width+2)*(height+2));
// get a bigger bitmap
Cxy(width+2,height+2)
{
int db=0,sum=0;
int ax=int(x)-1,ay=int(y)-1;
int curVal = fm::rect2i(0,0,width-1,height-1).contains(fm::vec2i(ax,ay)) ? oldData[ax+ay*width] : 0;
// this algorithm uses the difference between the neighbour pixels (the bigger the difference the bigger the output will be)
for(int x1=-1;x1<=1;x1++) for(int y1=-1;y1<=1;y1++)
{
if (fm::vec2(x1,y1).LENGTH()>=1)
{
int deltaVal=(fm::rect2i(0,0,width-1,height-1).contains(fm::vec2i(ax+x1,ay+y1))) ? oldData[(ax+x1)+(ay+y1)*width]-curVal : -curVal;
deltaVal*=(deltaVal > 0 ? .9 : 1.4);
sum+=(deltaVal < 0 ? -deltaVal : deltaVal),
db++;
}
}
// do some scaling on the value and clamp it to [0;255]
bitmap[x+y*(width+2)] = fm::math::min(255.0,db ? sum/db*1.6 : 0.0);
}
// update glyph image details
width+=2,height+=2;offsetx--,offsety--;
}
Cxy(width,height)
{
float f = bitmap[y*width + x] / 255.0;
bitmap[y*width + x] = fm::math::sqrt3(f) * 255.0;
}
if (leftDown)
leftDown->x = offsetx,
leftDown->y = offsety;
// convert the bitmap to fg::Image
fg::Image img;
img.create(width,height);
Cxy(width,height)
img.setPixel(x,y,fg::Color(255,255,255,bitmap[y*width + x]));
*/
return img;
}
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;
}
void Font::drawStringToBuffer(int x, int y, const std::wstring& str, Color color, unsigned char* buffer, int buffer_width, int buffer_height, int bitsperpixel, int max_width)
{
std::vector<unsigned char> char_raster;
int bx, by, bw, bh;
int ascent, descent, lineGap;
int sx = 0, sy = 0;
int width, height;
stbtt_GetFontVMetrics(&m_info, &ascent, &descent, &lineGap);
ascent *= m_scale;
descent *= m_scale;
lineGap *= m_scale;
this->measureText(str, width, height, max_width);
for (unsigned 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 char_width = bw - bx;
int char_height = bh - by;
int oy = ascent + by;
if(max_width > 0 && sx + char_width > max_width) {
sy += ascent - descent + lineGap;
sx = 0;
}
char_raster.resize(char_width * char_height);
stbtt_MakeCodepointBitmap(&m_info, &char_raster[0], char_width, char_height,
char_width, m_scale, m_scale, str[i]);
for (int ix = 0; ix < char_width; ix++) {
for (int iy = 0; iy < char_height; iy++) {
int xpos = x + sx + ix;
int ypos = buffer_height - (y + sy + oy + iy) -1;
if (char_raster[ix + iy * char_width] != 0 && xpos < buffer_width && ypos < buffer_height) {
unsigned int alpha = char_raster[ix + iy * char_width];
unsigned int inv_alpha = 255 - alpha;
if (bitsperpixel == 24) {
unsigned char bg_r = buffer[3 * (xpos + ypos * buffer_width) + 0];
unsigned char bg_g = buffer[3 * (xpos + ypos * buffer_width) + 1];
unsigned char bg_b = buffer[3 * (xpos + ypos * buffer_width) + 2];
unsigned char r = (unsigned char)((alpha * color.r + inv_alpha * bg_r) >> 8);
unsigned char g = (unsigned char)((alpha * color.g + inv_alpha * bg_g) >> 8);
unsigned char b = (unsigned char)((alpha * color.b + inv_alpha * bg_b) >> 8);
buffer[3 * (xpos + ypos * buffer_width) + 0] = b;
buffer[3 * (xpos + ypos * buffer_width) + 1] = g;
buffer[3 * (xpos + ypos * buffer_width) + 2] = r;
} else {
unsigned char bg_r = buffer[4 * (xpos + ypos * buffer_width) + 0];
unsigned char bg_g = buffer[4 * (xpos + ypos * buffer_width) + 1];
unsigned char bg_b = buffer[4 * (xpos + ypos * buffer_width) + 2];
unsigned char bg_a = buffer[4 * (xpos + ypos * buffer_width) + 3];
unsigned char a;
if(alpha == 255 || bg_a == 255) {
a = 255;
} else {
a = alpha + (inv_alpha * bg_a) / 256;
}
unsigned int r,g,b;
if(a == 0) {
r = 0;
g = 0;
b = 0;
} else {
r = (alpha * color.r + (inv_alpha * bg_a * bg_r) / 256) / a;
b = (alpha * color.b + (inv_alpha * bg_a * bg_b) / 256) / a;
g = (alpha * color.g + (inv_alpha * bg_a * bg_g) / 256) / a;
}
buffer[4 * (xpos + ypos * buffer_width) + 0] = b > 255 ? 255 : b;
buffer[4 * (xpos + ypos * buffer_width) + 1] = g > 255 ? 255 : g;
buffer[4 * (xpos + ypos * buffer_width) + 2] = r > 255 ? 255 : r;
buffer[4 * (xpos + ypos * buffer_width) + 3] = a;
}
}
}
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;
}