From efda4ad2ce5903026399e0929cb0e78ec4f23b83 Mon Sep 17 00:00:00 2001 From: "Steinar H. Gunderson" Date: Sat, 19 Feb 2005 02:49:38 +0000 Subject: [PATCH 1/1] Add functions for drawing text, try to do so (not very successful yet) --- bigscreen/ccbs_bigscreen.cpp | 52 ++++++++++++++++++++++++++++++++++-- 1 file changed, 50 insertions(+), 2 deletions(-) diff --git a/bigscreen/ccbs_bigscreen.cpp b/bigscreen/ccbs_bigscreen.cpp index 684f423..b6bf216 100644 --- a/bigscreen/ccbs_bigscreen.cpp +++ b/bigscreen/ccbs_bigscreen.cpp @@ -76,6 +76,8 @@ void pqxx::from_string(const char *from, widestring &to) to = from; } +int my_draw_text(const widestring &str, unsigned char *buf, int xpos, int ypos, bool real_render, int r, int g, int b, FT_Face face); + class Tournament { public: int id; @@ -146,6 +148,8 @@ void init(pqxx::connection &conn) } } +unsigned char framebuf[800 * 600 * 4]; + void main_loop(pqxx::connection &conn) { if (active_tournament.id == -1) { @@ -158,11 +162,15 @@ void main_loop(pqxx::connection &conn) // fetch all songs pqxx::result res( t.exec("SELECT * FROM songs") ); + unsigned y = 0; for (pqxx::result::const_iterator i = res.begin(); i != res.end(); ++i) { + my_draw_text(i["title"].as(widestring()), framebuf, 0, y, 1, 255, 255, 255, font); + y += 20; std::fprintf(stderr, "%s\n", i["title"].c_str()); } t.commit(); - + + ptc_update(framebuf); sleep(1); } @@ -173,10 +181,50 @@ void init_freetype() throw std::logic_error("FreeType init failed."); if (FT_New_Face(library, "/usr/share/fonts/truetype/msttcorefonts/Georgia.ttf", 0, &font)) throw std::logic_error("Face opening failed."); - if (FT_Set_Char_Size(font, 0, 12, 96, 96)) + if (FT_Set_Char_Size(font, 0, 12 * 64, 96, 96)) throw std::logic_error("Size set failed."); } +int my_draw_text(const widestring &str, unsigned char *buf, int xpos, int ypos, bool real_render, int r, int g, int b, FT_Face face) +{ + FT_GlyphSlot slot = face->glyph; + int x = 0; + + for (widestring::const_iterator i = str.begin(); i != str.end(); ++i) { + int glyph_index = FT_Get_Char_Index(face, *i); + if (FT_Load_Glyph(face, glyph_index, FT_LOAD_RENDER)) + continue; + + if (real_render) { + int y; + FT_Bitmap *bm = &(slot->bitmap); + for (y = 0; y < bm->rows; y++) { + int xx; + int dsty = ypos - slot->bitmap_top + y; + if (dsty < 0 || dsty > 599) continue; + + unsigned char *dst = buf + dsty * 800*4 + (x + xpos + slot->bitmap_left)*4; + unsigned char *src = bm->buffer + y * bm->width; + for (xx = 0; xx < bm->width; xx++) { + *dst = (*dst * (256-*src) + r * *src) >> 8; + *dst++; + *dst = (*dst * (256-*src) + g * *src) >> 8; + *dst++; + *dst = (*dst * (256-*src) + b * *src) >> 8; + *dst++; + *dst++ = 0; + src++; + } + } + } + + x += slot->advance.x >> 6; + } + + return x; +} + + int main(int argc, char **argv) { ucs4_iconv = iconv_open("ucs-4", "utf-8"); -- 2.39.2