int GraphicsElementManager::LoadTextureFont( const string& font_texture_filename,
int width, int height,
float bold, float italic, float shadow )
{
LOG_PRINT( " - Loading a texture for font: " + font_texture_filename );
TextureFont* pFont = new TextureFont();
bool res = pFont->InitFont( font_texture_filename, (int)(width * m_fScale), (int)(height * m_fScale) );
if( res )
{
// save the original size of the font
// used when the scaling is requested
m_vecOrigFontSize.push_back( Vector2( (float)width, (float)height ) );
// pFont->SetBold( bold );
pFont->SetItalic( italic );
m_vecpFont.push_back( pFont );
return (int)m_vecpFont.size() - 1;
}
else
{
LOG_PRINT_ERROR( " - Cannot load a texture for font: " + font_texture_filename );
SafeDelete( pFont );
return -1;
}
}
void TextLayout::_RenderRaw(float maxWidth) const
{
TextureFont *font = Gui::Screen::GetFont();
float py = 0;
init_clip_test();
glPushMatrix();
const float spaceWidth = font->GetGlyph(' ').advx;
std::list<word_t>::const_iterator wpos = this->words.begin();
// build lines of text
while (wpos != this->words.end()) {
float len = 0;
int num = 0;
std::list<word_t>::const_iterator i = wpos;
len += (*i).advx;
num++;
bool overflow = false;
bool explicit_newline = false;
if ((*i).word != 0) {
++i;
for (; i != this->words.end(); ++i) {
if ((*i).word == 0) {
// newline
explicit_newline = true;
num++;
break;
}
if (len + spaceWidth + (*i).advx > maxWidth) { overflow = true; break; }
len += (*i).advx + spaceWidth;
num++;
}
}
float _spaceWidth;
if ((m_justify) && (num>1) && overflow) {
float spaceleft = maxWidth - len;
_spaceWidth = spaceWidth + (spaceleft/float(num-1));
} else {
_spaceWidth = spaceWidth;
}
if (line_clip_test(py, py+font->GetHeight()*2.0)) {
float px = 0;
for (int j=0; j<num; j++) {
if ((*wpos).word) font->RenderMarkup((*wpos).word, round(px), round(py));
px += (*wpos).advx + _spaceWidth;
wpos++;
}
} else {
for (int j=0; j<num; j++) wpos++;
}
py += font->GetHeight() * (explicit_newline ? PARAGRAPH_SPACING : LINE_SPACING);
}
glPopMatrix();
}
void TextLayout::_MeasureSizeRaw(const float layoutWidth, float outSize[2]) const
{
TextureFont *font = Gui::Screen::GetFont();
outSize[0] = 0;
outSize[1] = 0;
const float spaceWidth = font->GetGlyph(' ').advx;
// build lines of text
for (std::list<word_t>::const_iterator wpos = words.begin(); wpos != words.end(); ) {
float len = 0;
int num = 0;
bool explicit_newline = false;
std::list<word_t>::const_iterator i = wpos;
len += (*i).advx;
num++;
bool overflow = false;
if ((*i).word != 0) {
++i;
for (; i != words.end(); ++i) {
if ((*i).word == 0) {
// newline
explicit_newline = true;
num++;
break;
}
if (len + spaceWidth + (*i).advx > layoutWidth) { overflow = true; break; }
len += (*i).advx + spaceWidth;
num++;
}
}
float _spaceWidth;
if ((m_justify) && (num>1) && overflow) {
float spaceleft = layoutWidth - len;
_spaceWidth = spaceWidth + (spaceleft/float(num-1));
} else {
_spaceWidth = spaceWidth;
}
float lineLen = 0;
for (int j=0; j<num; j++) {
word_t word = (*wpos);
lineLen += word.advx;
if (j < num-1) lineLen += _spaceWidth;
wpos++;
}
if (lineLen > outSize[0]) outSize[0] = lineLen;
outSize[1] += font->GetHeight() * (explicit_newline ? PARAGRAPH_SPACING : LINE_SPACING);
}
if (outSize[1]) outSize[1] += font->GetDescender();
}
/** Load a texture font from a chunk of data containing font data
* in the TXF format used by GLUT.
*/
TextureFont*
TextureFont::LoadTxf(const DataChunk* data)
{
TextureFont* font = new TextureFont();
if (font->loadTxf(data))
{
// TODO: Should skip the addRef
font->addRef();
}
else
{
delete font;
font = NULL;
}
return font;
}
float FontManager::getStrLength(int faceID, float size, std::string text)
{
if (text.size() == 0)
return 0;
if ((faceID < 0) || (faceID > getNumFaces())) {
DEBUG2("Trying to find length of string for invalid Font Face ID %d\n", faceID);
return 0;
}
TextureFont* pFont = getClosestSize(faceID, size);
if (!pFont)
return 0;
float scale = size / (float)pFont->getSize();
return pFont->getStrLength(scale, stripAnsiCodes(text).c_str());
}
void FontManager::loadAll(std::string directory)
{
if (directory.size() == 0)
return;
OSFile file;
OSDir dir(directory.c_str());
while (dir.getNextFile(file, true)) {
const char *ext = file.getExtension();
if (ext) {
if (strcasecmp(ext, "fmt") == 0) {
TextureFont *pFont = new TextureFont;
if (pFont) {
if (pFont->load(file)) {
std::string str = pFont->getFaceName();
GetTypeFaceName((char*)str.c_str());
FontFaceMap::iterator faceItr = faceNames.find(str);
int faceID = 0;
if (faceItr == faceNames.end()) {
// its new
FontSizeMap faceList;
fontFaces.push_back(faceList);
faceID = (int)fontFaces.size() - 1;
faceNames[str] = faceID;
} else {
faceID = faceItr->second;
}
fontFaces[faceID][pFont->getSize()] = pFont;
} else {
DEBUG4("Font Texture load failed: %s\n", file.getOSName());
delete(pFont);
}
}
}
}
}
}
void FontManager::drawString(float x, float y, float z, int faceID, float size, std::string text)
{
if (text.size() == 0)
return;
if ((faceID < 0) || (faceID > getNumFaces())) {
DEBUG2("Trying to draw with invalid Font Face ID %d\n", faceID);
return;
}
TextureFont* pFont = getClosestSize(faceID, size);
if (!pFont)
return;
float scale = size / (float)pFont->getSize();
/*
* Colorize text based on ANSI codes embedded in it
* Break the text every time an ANSI code
* is encountered and do a separate pFont->drawString code for
* each segment, with the appropriate color parameter
*/
// sane defaults
bool bright = true;
bool blink = false; //FIXME: blinking
bool underline = false; //FIXME: underline
// negatives are invalid, we use them to signal "no change"
GLfloat color[3] = {-1.0f, -1.0f, -1.0f};
// set underline color
const char* uColor = BZDB.get("underlineColor").c_str();
GLfloat underlineColor[3] = {-1.0f, -1.0f, -1.0f};
if (strcasecmp(uColor, "text") == 0) {
// use the initialized color, no change
} else if (strcasecmp(uColor, "cyan") == 0) {
underlineColor[0] = BrightColors[CyanColor][0];
underlineColor[1] = BrightColors[CyanColor][1];
underlineColor[2] = BrightColors[CyanColor][2];
} else if (strcasecmp(uColor, "grey") == 0) {
underlineColor[0] = BrightColors[GreyColor][0];
underlineColor[1] = BrightColors[GreyColor][1];
underlineColor[2] = BrightColors[GreyColor][2];
}
/*
* ANSI code interpretation is somewhat limited, we only accept values
* which have been defined in AnsiCodes.h
*/
bool doneLastSection = false;
int startSend = 0;
int endSend = (int)text.find("\033[", startSend);
std::string tmpText;
bool tookCareOfANSICode = false;
float width = 0;
// run at least once
if (endSend == -1) {
endSend = (int)text.size();
doneLastSection = true;
}
// split string into parts based on the embedded ANSI codes, render each separately
// there has got to be a faster way to do this
while (endSend >= 0) {
// blink the text, if desired
if (blink)
getBlinkColor(color, color);
// render text
if (endSend - startSend > 0) {
tmpText = text.substr(startSend, (endSend - startSend));
// get substr width, we may need it a couple times
width = getStrLength(faceID, size, tmpText);
glPushMatrix();
glTranslatef(x, y, z);
GLboolean depthMask;
glGetBooleanv(GL_DEPTH_WRITEMASK, &depthMask);
glDepthMask(0);
pFont->drawString(scale, color, tmpText.c_str());
if (underline) {
OpenGLGState::resetState(); // FIXME - full reset required?
if (underlineColor[0] >= 0)
glColor3fv(underlineColor);
// still have a translated matrix, these coordinates are
// with respect to the string just drawn
glBegin(GL_LINES);
glVertex2f(0, -1.0f);
glVertex2f(width, -1.0f);
glEnd();
}
glDepthMask(depthMask);
glPopMatrix();
// x transform for next substr
x += width;
}
if (!doneLastSection) {
startSend = (int)text.find("m", endSend) + 1;
}
// we stopped sending text at an ANSI code, find out what it is and do something about it
if (endSend != (int)text.size()) {
tookCareOfANSICode = false;
tmpText = text.substr(endSend, (text.find("m", endSend) - endSend) + 1);
// colors
for (int i = 0; i < 8; i++) {
if (tmpText == ColorStrings[i]) {
if (bright) {
color[0] = BrightColors[i][0];
color[1] = BrightColors[i][1];
color[2] = BrightColors[i][2];
} else {
color[0] = DimColors[i][0];
color[1] = DimColors[i][1];
color[2] = DimColors[i][2];
}
tookCareOfANSICode = true;
break;
}
}
// didn't find a matching color
if (!tookCareOfANSICode) {
// settings other than color
if (tmpText == ANSI_STR_RESET) {
bright = true;
blink = false;
underline = false;
color[0] = BrightColors[WhiteColor][0];
color[1] = BrightColors[WhiteColor][1];
color[2] = BrightColors[WhiteColor][2];
} else if (tmpText == ANSI_STR_RESET_FINAL) {
bright = false;
blink = false;
underline = false;
color[0] = DimColors[WhiteColor][0];
color[1] = DimColors[WhiteColor][1];
color[2] = DimColors[WhiteColor][2];
} else if (tmpText == ANSI_STR_BRIGHT) {
bright = true;
} else if (tmpText == ANSI_STR_DIM) {
bright = false;
} else if (tmpText == ANSI_STR_UNDERLINE) {
underline = !underline;
} else if (tmpText == ANSI_STR_BLINK) {
blink = !blink;
} else {
DEBUG2("ANSI Code %s not supported\n", tmpText.c_str());
}
}
}
endSend = (int)text.find("\033[", startSend);
if ((endSend == -1) && !doneLastSection) {
endSend = (int)text.size();
doneLastSection = true;
}
}
}
TextureFont* TextureFont::load(istream& in)
{
char header[4];
in.read(header, sizeof header);
if (!in.good() || strncmp(header, "\377txf", 4) != 0)
{
DPRINTF(0, "Stream is not a texture font!.\n");
return NULL;
}
uint32 endiannessTest = 0;
in.read(reinterpret_cast<char*>(&endiannessTest), sizeof endiannessTest);
if (!in.good())
{
DPRINTF(0, "Error reading endianness bytes in txf header.\n");
return NULL;
}
bool byteSwap;
if (endiannessTest == 0x78563412)
byteSwap = true;
else if (endiannessTest == 0x12345678)
byteSwap = false;
else
{
DPRINTF(0, "Stream is not a texture font!.\n");
return NULL;
}
int format = readUint32(in, byteSwap);
unsigned int texWidth = readUint32(in, byteSwap);
unsigned int texHeight = readUint32(in, byteSwap);
unsigned int maxAscent = readUint32(in, byteSwap);
unsigned int maxDescent = readUint32(in, byteSwap);
unsigned int nGlyphs = readUint32(in, byteSwap);
if (!in)
{
DPRINTF(0, "Texture font stream is incomplete");
return NULL;
}
DPRINTF(1, "Font contains %d glyphs.\n", nGlyphs);
TextureFont* font = new TextureFont();
assert(font != NULL);
font->setMaxAscent(maxAscent);
font->setMaxDescent(maxDescent);
float dx = 0.5f / texWidth;
float dy = 0.5f / texHeight;
for (unsigned int i = 0; i < nGlyphs; i++)
{
uint16 __id = readUint16(in, byteSwap);
TextureFont::Glyph glyph(__id);
glyph.width = readUint8(in);
glyph.height = readUint8(in);
glyph.xoff = readInt8(in);
glyph.yoff = readInt8(in);
glyph.advance = readInt8(in);
readInt8(in);
glyph.x = readInt16(in, byteSwap);
glyph.y = readInt16(in, byteSwap);
if (!in)
{
DPRINTF(0, "Error reading glyph %ud from texture font stream.\n", i);
delete font;
return NULL;
}
float fWidth = texWidth;
float fHeight = texHeight;
glyph.texCoords[0].u = glyph.x / fWidth + dx;
glyph.texCoords[0].v = glyph.y / fHeight + dy;
glyph.texCoords[1].u = (glyph.x + glyph.width) / fWidth + dx;
glyph.texCoords[1].v = glyph.y / fHeight + dy;
glyph.texCoords[2].u = (glyph.x + glyph.width) / fWidth + dx;
glyph.texCoords[2].v = (glyph.y + glyph.height) / fHeight + dy;
glyph.texCoords[3].u = glyph.x / fWidth + dx;
glyph.texCoords[3].v = (glyph.y + glyph.height) / fHeight + dy;
font->addGlyph(glyph);
}
font->texWidth = texWidth;
font->texHeight = texHeight;
if (format == TxfByte)
{
unsigned char* fontImage = new unsigned char[texWidth * texHeight];
if (fontImage == NULL)
{
DPRINTF(0, "Not enough memory for font bitmap.\n");
delete font;
return NULL;
}
DPRINTF(1, "Reading %d x %d 8-bit font image.\n", texWidth, texHeight);
in.read(reinterpret_cast<char*>(fontImage), texWidth * texHeight);
if (in.gcount() != (signed)(texWidth * texHeight))
{
DPRINTF(0, "Missing bitmap data in font stream.\n");
delete font;
delete[] fontImage;
return NULL;
}
font->fontImage = fontImage;
}
else
{
int rowBytes = (texWidth + 7) >> 3;
unsigned char* fontBits = new unsigned char[rowBytes * texHeight];
unsigned char* fontImage = new unsigned char[texWidth * texHeight];
if (fontImage == NULL || fontBits == NULL)
{
DPRINTF(0, "Not enough memory for font bitmap.\n");
delete font;
if (fontBits != NULL)
delete[] fontBits;
if (fontImage != NULL)
delete[] fontImage;
return NULL;
}
DPRINTF(1, "Reading %d x %d 1-bit font image.\n", texWidth, texHeight);
in.read(reinterpret_cast<char*>(fontBits), rowBytes * texHeight);
if (in.gcount() != (signed)(rowBytes * texHeight))
{
DPRINTF(0, "Missing bitmap data in font stream.\n");
delete font;
return NULL;
}
for (unsigned int y = 0; y < texHeight; y++)
{
for (unsigned int x = 0; x < texWidth; x++)
{
if ((fontBits[y * rowBytes + (x >> 3)] & (1 << (x & 0x7))) != 0)
fontImage[y * texWidth + x] = 0xff;
else
fontImage[y * texWidth + x] = 0x0;
}
}
font->fontImage = fontImage;
delete[] fontBits;
}
int main()
{
auto error_callback = [](int error, const char* description)
{
slog.e(TAG, "Error (%d): %s\n", error, description);
};
glfwSetErrorCallback(error_callback);
if(glfwInit() != GLFW_TRUE)
{
slog.e(TAG, "Failed to initialize GLFW library" );
return -1;
}
glfwWindowHint(GLFW_SAMPLES, 4);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); // To make MacOS happy; should not be needed
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
// Open a window and create its OpenGL context
GLFWwindow* window = glfwCreateWindow(window_size.width, window_size.height, TAG, NULL, NULL);
if(!window)
{
slog.e(TAG, "Failed to open GLFW window. Not OpenGL 3.3 compatible");
glfwTerminate();
return -2;
}
glfwMakeContextCurrent(window);
// Initialize GLEW
glewExperimental = true; // Needed for core profile
if(glewInit() != GLEW_OK)
{
slog.e(TAG, "Failed to initialize GLEW library");
glfwTerminate();
return -3;
}
// Ensure we can capture the escape key being pressed below
glfwSetInputMode(window, GLFW_STICKY_KEYS, GL_TRUE);
// Hide the mouse and enable unlimited mouvement
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
glfwPollEvents();
// Set the mouse at the center of the screen
glfwSetCursorPos(window, window_size.width/2, window_size.height/2);
// Enable depth test
glEnable(GL_DEPTH_TEST);
// Accept fragment if it closer to the camera than the former one
glDepthFunc(GL_LESS);
// Cull triangles which normal is not towards the camera
glEnable(GL_CULL_FACE);
// double lastTime = glfwGetTime();
std::string dir = File::dirname(__FILE__);
bool flag = Program::loadFromFile(program, dir + "/font.vert", dir + "/font.frag");
assert(flag);
program.use();
font.load(File::getResourcePath() + "/font/FreeSans.ttf", 48);
while(true)
{
// Dark blue background
glClearColor(0.0f, 0.0f, 0.24f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT);
// Check if the ESC key was pressed or the window was closed
if(glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS
|| glfwWindowShouldClose(window) != 0)
break;
}
// Close OpenGL window and terminate GLFW
glfwTerminate();
return 0;
}
