123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138 |
- /*!
- * \file src/FontSDL.cpp
- * \brief SDL Font implementation
- *
- * \author xythobuz
- */
-
- #include "global.h"
- #include "FontSDL.h"
-
- FontSDL::FontSDL() {
- mFont = NULL;
- mFontInit = false;
- mFontName = NULL;
- mFontTexture = 0;
-
- tempText.text = new char[256];
- tempText.color[0] = 0xFF;
- tempText.color[1] = 0xFF;
- tempText.color[2] = 0xFF;
- tempText.color[3] = 0xFF;
- tempText.scale = 1.2f;
- tempText.w = 0;
- tempText.h = 0;
- }
-
- FontSDL::~FontSDL() {
- if (mFont)
- TTF_CloseFont(mFont);
-
- if (mFontInit)
- TTF_Quit();
-
- if (tempText.text)
- delete [] tempText.text;
- }
-
- int FontSDL::initialize() {
- assert(mFontInit == false);
- assert(mFontName != NULL);
- assert(mFontName[0] != '\0');
-
- if (TTF_Init() != 0) {
- printf("Could not initialize SDL-TTF!\n");
- return -1;
- }
-
- mFont = TTF_OpenFont(mFontName, 24);
- if (mFont == NULL) {
- printf("TTF_OpenFont Error: %s\n", TTF_GetError());
- return -2;
- }
-
- glGenTextures(1, &mFontTexture);
-
- mFontInit = true;
- return 0;
- }
-
- void FontSDL::writeString(FontString &s) {
- assert(s.text != NULL);
-
- SDL_Color color;
- color.r = (unsigned char)(s.color[0] * 255.0f);
- color.g = (unsigned char)(s.color[1] * 255.0f);
- color.b = (unsigned char)(s.color[2] * 255.0f);
- color.a = (unsigned char)(s.color[3] * 255.0f);
-
- SDL_Surface *surface = TTF_RenderUTF8_Blended(mFont, s.text, color);
- if (surface == NULL) {
- printf("TTF_RenderUTF8_Blended Error: %s\n", TTF_GetError());
- return;
- }
-
- s.w = (int)((float)surface->w * s.scale);
- s.h = (int)((float)surface->h * s.scale);
-
- GLenum textureFormat;
- if (surface->format->BytesPerPixel == 4) {
- if (surface->format->Rmask == 0x000000FF)
- textureFormat = GL_RGBA;
- else
- textureFormat = GL_BGRA_EXT;
- } else {
- if (surface->format->Rmask == 0x000000FF)
- textureFormat = GL_RGB;
- else
- textureFormat = GL_BGR_EXT;
- }
-
- glBindTexture(GL_TEXTURE_2D, mFontTexture);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- glTexImage2D(GL_TEXTURE_2D, 0, surface->format->BytesPerPixel, surface->w, surface->h, 0, textureFormat, GL_UNSIGNED_BYTE, surface->pixels);
-
- GLuint xMin = s.x;
- GLuint yMin = s.y;
- GLuint xMax = xMin + s.w;
- GLuint yMax = yMin + s.h;
-
- glColor4f(color.r / 256.0f, color.g / 256.0f, color.b / 256.0f, color.a / 256.0f);
-
- glBegin(GL_QUADS);
- glTexCoord2f(0.0f, 0.0f);
- glVertex2i(xMin, yMin);
-
- glTexCoord2f(0.0f, 1.0f);
- glVertex2i(xMin, yMax);
-
- glTexCoord2f(1.0f, 1.0f);
- glVertex2i(xMax, yMax);
-
- glTexCoord2f(1.0f, 0.0f);
- glVertex2i(xMax, yMin);
- glEnd();
-
- SDL_FreeSurface(surface);
- }
-
- void FontSDL::drawText(unsigned int x, unsigned int y, float scale, const float color[4], const char *s, ...) {
- va_list args;
- va_start(args, s);
- vsnprintf(tempText.text, 256, s, args);
- tempText.text[255] = '\0';
- va_end(args);
-
- tempText.scale = scale;
- tempText.x = x;
- tempText.y = y;
- if (color) {
- tempText.color[0] = color[0];
- tempText.color[1] = color[1];
- tempText.color[2] = color[2];
- tempText.color[3] = color[3];
- }
- writeString(tempText);
- }
|