OpenGLFont.cpp

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#include "OpenGLFont.h"

OpenGLFont::OpenGLFont() {
        m_renderer = NULL;
        m_startTextModeList = 0;
        m_textBase = 0;
}

//OpenGLFont::OpenGLFont(const char *fontName, OpenGLRenderer *renderer, HDC hDC) {
OpenGLFont::OpenGLFont(HFONT font, OpenGLRenderer *renderer, HDC hDC) {
        m_renderer = renderer;
        m_startTextModeList = 0;
        m_textBase = 0;

        //init(fontName, hDC);
        init(font, hDC);
}

OpenGLFont::~OpenGLFont() {
        m_renderer = NULL;
        if (m_textBase) glDeleteLists(m_textBase, 96);
        if (m_startTextModeList) glDeleteLists(m_startTextModeList, 1);

        LOG_SUCCESS(("Font removed"));
}

//bool OpenGLFont::init(const char *fontName, HDC hDC) {
bool OpenGLFont::init(HFONT font, HDC hDC) {
        //HFONT font;
        HFONT oldfont;

        r = g = b = a = 1.0f;

        //if (!fontName)
        //      return false;

        m_textBase = glGenLists(96);
        if (!m_textBase) {
                return false;
        }

        oldfont = (HFONT)SelectObject(hDC, font);
        wglUseFontBitmaps(hDC, 32, 96, m_textBase);
        SelectObject(hDC, oldfont);

        //DeleteObject(font);

        LOG_SUCCESS(("Font initialized"));
        return true;
}

void OpenGLFont::startTextMode() {

        // first call, create display list
        if (!m_startTextModeList) {
                m_startTextModeList = glGenLists(1);
                glNewList(m_startTextModeList, GL_COMPILE);
                {
                        glListBase(m_textBase-32);
                        glMatrixMode(GL_PROJECTION);
                        glPushMatrix();
                        glLoadIdentity();
                        //if (g_fullscreen)
                        //      glOrtho(0, g_fullscreenWidth, g_fullscreenHeight, 0, -1, 1);
                        //else
                        //      gluOrtho2D(0, g_windowRight-g_windowLeft, g_windowBottom-g_windowTop, 0);       // this is bad...
                                //glOrtho(g_windowLeft, g_windowRight, g_windowBottom, g_windowTop, -1, 1);

                        glOrtho(0, g_width, g_height, 0, -1, 1);

                        glMatrixMode(GL_MODELVIEW);
                        glPushMatrix();
                        glLoadIdentity();
                }
                glEndList();
        }

        glCallList(m_startTextModeList);

        m_renderer->setBlending(SRC_ALPHA, ONE);        // ONE_MINUS_SRC_ALPHA maby?
        m_renderer->setDepthFunc(DEPTH_NONE);
        m_renderer->apply();
}

void OpenGLFont::setColor(float rr, float gg, float bb, float aa) {
        r = rr;
        g = gg;
        b = bb;
        a = aa;
}

void OpenGLFont::print(float x, float y, const char *str, ...) {
        if (!m_textBase)
                return;

        if(str==NULL)
                return;

        static char text[256];

        va_list va;
        
        va_start(va, str);
        vsprintf(text, str, va);
        va_end(va);

        glColor4f(r, g, b, a);
        glPushAttrib(GL_LIST_BIT);              // can remove this?
        glRasterPos2f(x, y);
        glCallLists(strlen(text), GL_UNSIGNED_BYTE, text);
        glPopAttrib();                                  // can remove this?
}

void OpenGLFont::endTextMode() {
        glMatrixMode(GL_PROJECTION);
        glPopMatrix();
        glMatrixMode(GL_MODELVIEW);
        glPopMatrix();

        glListBase(0);
}

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