// Quick print function. Limited to 8-bit characters (0-255), left alignment, one line.
void font_data::qprint(float x, float y, int align, const char *fmt, ...) {
// We want a coordinate system where things coresponding to window pixels.
pushScreenCoordinateMatrix();
char text[256]; // Holds the string (max of 255 bytes)
va_list ap; // Pointer to list of arguments
if (fmt == NULL) // If there's no text
*text=0; // do nothing
else {
va_start(ap, fmt); // Parses the string for variables
vsprintf(text, fmt, ap); // and converts symbols to actual numbers
va_end(ap); // Results are stored in text
}
glPushAttrib(GL_LIST_BIT | GL_CURRENT_BIT | GL_ENABLE_BIT | GL_TRANSFORM_BIT);
glMatrixMode(GL_MODELVIEW);
glDisable(GL_LIGHTING);
glEnable(GL_TEXTURE_2D);
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glListBase(list_base);
float modelview_matrix[16];
glGetFloatv(GL_MODELVIEW_MATRIX, modelview_matrix);
glPushMatrix();
glLoadIdentity();
glTranslatef(x,y,0);
glMultMatrixf(modelview_matrix);
// Call the display lists using the 8-bit text line.
glCallLists((GLsizei) strlen(text), GL_UNSIGNED_BYTE, text);
glPopMatrix();
glPopAttrib();
pop_projection_matrix();
}
void dsMessageBox::render() {
GLfloat alpha;
switch (status) {
case disappeared:
return;
break;
case appearing:
alpha = fading_speed * timer.getDurationSecf();
if (alpha > showing_alpha) {
status = showing;
timer.recordTime();
}
break;
case showing:
alpha = showing_alpha;
if (timer.getDurationSecf() > lasting_time) {
status = disappearing;
timer.recordTime();
}
break;
case disappearing:
alpha = showing_alpha - fading_speed * timer.getDurationSecf();
if (alpha < 0.0f) {
status = disappeared;
}
break;
}
x = static_cast<GLfloat>(window_width) / 2.0f;
y = window_height - height - 50.0f;
extern dsTextManager dstext;
pushScreenCoordinateMatrix();
glPushAttrib(GL_LIST_BIT | GL_CURRENT_BIT | GL_ENABLE_BIT | GL_TRANSFORM_BIT);
glMatrixMode(GL_MODELVIEW);
glEnable(GL_BLEND);
glDisable(GL_LIGHTING);
glDisable(GL_TEXTURE_2D);
glDisable(GL_DEPTH_TEST);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glPushMatrix();
glLoadIdentity();
glColor4f(1.0f, 1.0f, 1.0f, alpha);
glBegin(GL_QUADS);
glVertex2f(x - width / 2, y);
glVertex2f(x - width / 2, y + height);
glVertex2f(x - width / 2 + width, y + height);
glVertex2f(x - width / 2 + width, y);
glEnd();
glColor4f(0.0f, 0.0f, 0.0f, alpha / showing_alpha);
dstext.print(x - width / 2 + 20.0f, y + 13.0f, message);
glPopMatrix();
glPopAttrib();
pop_projection_matrix();
}
///Much like Nehe's glPrint function, but modified to work
///with freetype fonts.
void print(const font_data &ft_font, float x, float y, const char *fmt, ...) {
// We want a coordinate system where things coresponding to window pixels.
pushScreenCoordinateMatrix();
GLuint font=ft_font.list_base;
float h=ft_font.h/.63f; //We make the height about 1.5* that of
char text[256]; // Holds Our String
va_list ap; // Pointer To List Of Arguments
if (fmt == NULL) // If There's No Text
*text=0; // Do Nothing
else {
va_start(ap, fmt); // Parses The String For Variables
vsprintf(text, fmt, ap); // And Converts Symbols To Actual Numbers
va_end(ap); // Results Are Stored In Text
}
//Here is some code to split the text that we have been
//given into a set of lines.
//This could be made much neater by using
//a regular expression library such as the one avliable from
//boost.org (I've only done it out by hand to avoid complicating
//this tutorial with unnecessary library dependencies).
const char *start_line=text;
vector<string> lines;
const char * c = text;;
//for(const char *c=text;*c;c++) {
for(; *c; c++) {
if(*c=='\n') {
string line;
for(const char *n=start_line; n<c; n++) line.append(1,*n);
lines.push_back(line);
start_line=c+1;
}
}
if(start_line) {
string line;
for(const char *n=start_line; n<c; n++) line.append(1,*n);
lines.push_back(line);
}
glPushAttrib(GL_LIST_BIT | GL_CURRENT_BIT | GL_ENABLE_BIT | GL_TRANSFORM_BIT);
glMatrixMode(GL_MODELVIEW);
glDisable(GL_LIGHTING);
glEnable(GL_TEXTURE_2D);
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glListBase(font);
float modelview_matrix[16];
glGetFloatv(GL_MODELVIEW_MATRIX, modelview_matrix);
//This is where the text display actually happens.
//For each line of text we reset the modelview matrix
//so that the line's text will start in the correct position.
//Notice that we need to reset the matrix, rather than just translating
//down by h. This is because when each character is
//draw it modifies the current matrix so that the next character
//will be drawn immediatly after it.
for(unsigned int i=0; i<lines.size(); i++) {
glPushMatrix();
glLoadIdentity();
glTranslatef(x,y-h*i,0);
glMultMatrixf(modelview_matrix);
// The commented out raster position stuff can be useful if you need to
// know the length of the text that you are creating.
// If you decide to use it make sure to also uncomment the glBitmap command
// in make_dlist().
// glRasterPos2f(0,0);
glCallLists(lines[i].length(), GL_UNSIGNED_BYTE, lines[i].c_str());
// float rpos[4];
// glGetFloatv(GL_CURRENT_RASTER_POSITION ,rpos);
// float len=x-rpos[0];
glPopMatrix();
}
glPopAttrib();
pop_projection_matrix();
}
// Much like Nehe's glPrint function, but modified to work
// with freetype fonts.
void font_data::print(float x, float y, int align, const char *fmt, ...) {
// We want a coordinate system where things coresponding to window pixels.
pushScreenCoordinateMatrix();
//We make the height about 1.5* that of
float ht= h/.63f;
char text[256]; // Holds the string (max of 255 bytes)
va_list ap; // Pointer to list of arguments
if (fmt == NULL) // If there's no text
*text=0; // do nothing
else {
va_start(ap, fmt); // Parses the string for variables
vsprintf(text, fmt, ap); // and converts symbols to actual numbers
va_end(ap); // Results are stored in text
}
vector<ucs2string> lines;
vector<int> widths;
split_and_convert((uchar*) text, lines, widths);
glPushAttrib(GL_LIST_BIT | GL_CURRENT_BIT | GL_ENABLE_BIT | GL_TRANSFORM_BIT);
glMatrixMode(GL_MODELVIEW);
glDisable(GL_LIGHTING);
glEnable(GL_TEXTURE_2D);
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glListBase(list_base);
float modelview_matrix[16];
glGetFloatv(GL_MODELVIEW_MATRIX, modelview_matrix);
//This is where the text display actually happens.
//For each line of text we reset the modelview matrix
//so that the line's text will start in the correct position.
//Notice that we need to reset the matrix, rather than just translating
//down by h. This is because when each character is
//draw it modifies the current matrix so that the next character
//will be drawn immediatly after it.
for (unsigned int i = 0; i < lines.size(); ++i) {
float xmod = x;
float len = (float) widths[i]; //= text_length(lines[i].c_str());
if ( align == CENTER ) xmod -= floor(len / 2);
else if ( align == RIGHT ) xmod -= len;
glPushMatrix();
glLoadIdentity();
glTranslatef(xmod,y-ht*i,0);
glMultMatrixf(modelview_matrix);
// Call the display lists using the UCS-2 line.
glCallLists((GLsizei)lines[i].length(), GL_UNSIGNED_SHORT, lines[i].c_str());
glPopMatrix();
}
glPopAttrib();
pop_projection_matrix();
}
void print(font_data *ft_font, int color, int XALIGN, int YALIGN, int x, int y, int length, const char *text, bool onHUD)
{
int i=0,j,textlength;
fontbounds returnval,dummy;
float xoff = 0.0,yoff = 0.0;
int start,end,toklen;
int X,Y;
GLuint font;
returnval.width = 0.0;
returnval.height = 0.0;
if (!(textlength = MIN(strlen(text),length))) return;
font=ft_font->list_base;
returnval = nprintsize(ft_font,length,"%s",text);
yoff = (returnval.height/2.0f)*((float)YALIGN) - ft_font->h;
glListBase(font);
if (onHUD) pushScreenCoordinateMatrix();
glPushAttrib(GL_LIST_BIT | GL_CURRENT_BIT | GL_ENABLE_BIT | GL_TRANSFORM_BIT);
glMatrixMode(GL_MODELVIEW);
glDisable(GL_LIGHTING);
glEnable(GL_TEXTURE_2D);
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glGetFloatv(GL_MODELVIEW_MATRIX, modelview_matrix);
/* This is where the text display actually happens.
* For each line of text we reset the modelview matrix
* so that the line's text will start in the correct position.
* Notice that we need to reset the matrix, rather than just translating
* down by h. This is because when each character is
* draw it modifies the current matrix so that the next character
* will be drawn immediatly after it.
*/
/* make sure not to use mytok until we are done!!! */
start = 0;
for (;;) {
for (end=start;end<textlength;++end)
if (text[end] == '\n') {
break;
}
toklen = end - start;
dummy.width = 0.0;
for (j=start;j<=end-1;++j)
dummy.width = dummy.width + ft_font->W[(GLubyte)text[j]];
xoff = - (dummy.width/2.0f)*((float)XALIGN);
glPushMatrix();
glLoadIdentity();
X = (int)(x + xoff);
Y = (int)(y - ft_font->linespacing*i + yoff);
if (color) set_alphacolor(color);
if (onHUD) glTranslatef(X, Y, 0);
else glTranslatef(X * clData.scale,Y * clData.scale, 0);
glMultMatrixf(modelview_matrix);
glCallLists(toklen, GL_UNSIGNED_BYTE, (GLubyte *) &text[start]);
glPopMatrix();
++i;
if (end >= textlength - 1) break;
start = end + 1;
}
glPopAttrib();
if (onHUD) pop_projection_matrix();
}
