diff options
Diffstat (limited to 'src/engine/client/ec_gfx_text.cpp')
| -rw-r--r-- | src/engine/client/ec_gfx_text.cpp | 669 |
1 files changed, 0 insertions, 669 deletions
diff --git a/src/engine/client/ec_gfx_text.cpp b/src/engine/client/ec_gfx_text.cpp deleted file mode 100644 index d17d1bed..00000000 --- a/src/engine/client/ec_gfx_text.cpp +++ /dev/null @@ -1,669 +0,0 @@ -#include <base/system.h> -#include <string.h> -#include <engine/e_client_interface.h> -#include <engine/client/graphics.h> - -extern IEngineGraphics *Graphics(); - -#ifdef CONF_PLATFORM_MACOSX - #include <OpenGL/gl.h> - #include <OpenGL/glu.h> -#else - #include <GL/gl.h> - #include <GL/glu.h> -#endif - -static int word_length(const char *text) -{ - int s = 1; - while(1) - { - if(*text == 0) - return s-1; - if(*text == '\n' || *text == '\t' || *text == ' ') - return s; - text++; - s++; - } -} - -static float text_r=1; -static float text_g=1; -static float text_b=1; -static float text_a=1; - -static struct FONT *default_font = 0; -void gfx_text_set_default_font(struct FONT *font) -{ - default_font = font; -} - - -void gfx_text_set_cursor(TEXT_CURSOR *cursor, float x, float y, float font_size, int flags) -{ - mem_zero(cursor, sizeof(*cursor)); - cursor->font_size = font_size; - cursor->start_x = x; - cursor->start_y = y; - cursor->x = x; - cursor->y = y; - cursor->line_count = 1; - cursor->line_width = -1; - cursor->flags = flags; - cursor->charcount = 0; -} - - -void gfx_text(void *font_set_v, float x, float y, float size, const char *text, int max_width) -{ - TEXT_CURSOR cursor; - gfx_text_set_cursor(&cursor, x, y, size, TEXTFLAG_RENDER); - cursor.line_width = max_width; - gfx_text_ex(&cursor, text, -1); -} - -float gfx_text_width(void *font_set_v, float size, const char *text, int length) -{ - TEXT_CURSOR cursor; - gfx_text_set_cursor(&cursor, 0, 0, size, 0); - gfx_text_ex(&cursor, text, length); - return cursor.x; -} - -void gfx_text_color(float r, float g, float b, float a) -{ - text_r = r; - text_g = g; - text_b = b; - text_a = a; -} - -/* ft2 texture */ -#include <ft2build.h> -#include FT_FREETYPE_H - -static FT_Library ft_library; - -#define MAX_CHARACTERS 64 - - -/* GL_LUMINANCE can be good for debugging*/ -static int font_texture_format = GL_ALPHA; - - -static int font_sizes[] = {8,9,10,11,12,13,14,15,16,17,18,19,20,36}; -#define NUM_FONT_SIZES (sizeof(font_sizes)/sizeof(int)) - - -typedef struct FONTCHAR -{ - int id; - - /* these values are scaled to the font size */ - /* width * font_size == real_size */ - float width; - float height; - float offset_x; - float offset_y; - float advance_x; - - float uvs[4]; - int64 touch_time; -} FONTCHAR; - -typedef struct FONTSIZEDATA -{ - int font_size; - FT_Face *face; - - unsigned textures[2]; - int texture_width; - int texture_height; - - int num_x_chars; - int num_y_chars; - - int char_max_width; - int char_max_height; - - FONTCHAR characters[MAX_CHARACTERS*MAX_CHARACTERS]; - - int current_character; -} FONTSIZEDATA; - -typedef struct FONT -{ - char filename[128]; - FT_Face ft_face; - FONTSIZEDATA sizes[NUM_FONT_SIZES]; -} FONT; - -static int font_get_index(int pixelsize) -{ - for(unsigned i = 0; i < NUM_FONT_SIZES; i++) - { - if(font_sizes[i] >= pixelsize) - return i; - } - - return NUM_FONT_SIZES-1; -} - -FONT *gfx_font_load(const char *filename) -{ - FONT *font = (FONT *)mem_alloc(sizeof(FONT), 1); - - mem_zero(font, sizeof(*font)); - str_copy(font->filename, filename, sizeof(font->filename)); - - if(FT_New_Face(ft_library, font->filename, 0, &font->ft_face)) - { - mem_free(font); - return NULL; - } - - for(unsigned i = 0; i < NUM_FONT_SIZES; i++) - font->sizes[i].font_size = -1; - - return font; -}; - -void gfx_font_destroy(FONT *font) -{ - mem_free(font); -} - -void gfx_font_init() -{ - FT_Init_FreeType(&ft_library); -} - -static void grow(unsigned char *in, unsigned char *out, int w, int h) -{ - int y, x; - for(y = 0; y < h; y++) - for(x = 0; x < w; x++) - { - int c = in[y*w+x]; - int s_y, s_x; - - for(s_y = -1; s_y <= 1; s_y++) - for(s_x = -1; s_x <= 1; s_x++) - { - int get_x = x+s_x; - int get_y = y+s_y; - if (get_x >= 0 && get_y >= 0 && get_x < w && get_y < h) - { - int index = get_y*w+get_x; - if(in[index] > c) - c = in[index]; - } - } - - out[y*w+x] = c; - } -} - -static void font_init_texture(FONTSIZEDATA *sizedata, int charwidth, int charheight, int xchars, int ychars) -{ - static int font_memory_usage = 0; - int i; - int width = charwidth*xchars; - int height = charheight*ychars; - void *mem = mem_alloc(width*height, 1); - mem_zero(mem, width*height); - - if(sizedata->textures[0] == 0) - glGenTextures(2, sizedata->textures); - else - font_memory_usage -= sizedata->texture_width*sizedata->texture_height*2; - - sizedata->num_x_chars = xchars; - sizedata->num_y_chars = ychars; - sizedata->texture_width = width; - sizedata->texture_height = height; - sizedata->current_character = 0; - - for(i = 0; i < 2; i++) - { - glBindTexture(GL_TEXTURE_2D, sizedata->textures[i]); - 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, font_texture_format, width, height, 0, font_texture_format, GL_UNSIGNED_BYTE, mem); - font_memory_usage += width*height; - } - - dbg_msg("", "font memory usage: %d", font_memory_usage); - - mem_free(mem); -} - -static void font_increase_texture_size(FONTSIZEDATA *sizedata) -{ - if(sizedata->texture_width < sizedata->texture_height) - sizedata->num_x_chars <<= 1; - else - sizedata->num_y_chars <<= 1; - font_init_texture(sizedata, sizedata->char_max_width, sizedata->char_max_height, sizedata->num_x_chars, sizedata->num_y_chars); -} - -static void font_init_index(FONT *font, int index) -{ - int outline_thickness = 1; - FONTSIZEDATA *sizedata = &font->sizes[index]; - - sizedata->font_size = font_sizes[index]; - FT_Set_Pixel_Sizes(font->ft_face, 0, sizedata->font_size); - - if(sizedata->font_size >= 18) - outline_thickness = 2; - - { - unsigned glyph_index; - int charcode; - int max_h = 0; - int max_w = 0; - - charcode = FT_Get_First_Char(font->ft_face, &glyph_index); - while(glyph_index != 0) - { - /* do stuff */ - FT_Load_Glyph(font->ft_face, glyph_index, FT_LOAD_DEFAULT); - - if(font->ft_face->glyph->metrics.width > max_w) max_w = font->ft_face->glyph->metrics.width; - if(font->ft_face->glyph->metrics.height > max_h) max_h = font->ft_face->glyph->metrics.height; - charcode = FT_Get_Next_Char(font->ft_face, charcode, &glyph_index); - } - - max_w = (max_w>>6)+2+outline_thickness*2; - max_h = (max_h>>6)+2+outline_thickness*2; - - for(sizedata->char_max_width = 1; sizedata->char_max_width < max_w; sizedata->char_max_width <<= 1); - for(sizedata->char_max_height = 1; sizedata->char_max_height < max_h; sizedata->char_max_height <<= 1); - } - - //dbg_msg("font", "init size %d, texture size %d %d", font->sizes[index].font_size, w, h); - //FT_New_Face(ft_library, "data/fonts/vera.ttf", 0, &font->ft_face); - font_init_texture(sizedata, sizedata->char_max_width, sizedata->char_max_height, 8, 8); -} - -static FONTSIZEDATA *font_get_size(FONT *font, int pixelsize) -{ - int index = font_get_index(pixelsize); - if(font->sizes[index].font_size != font_sizes[index]) - font_init_index(font, index); - return &font->sizes[index]; -} - - -static void font_upload_glyph(FONTSIZEDATA *sizedata, int texnum, int slot_id, int chr, const void *data) -{ - int x = (slot_id%sizedata->num_x_chars) * (sizedata->texture_width/sizedata->num_x_chars); - int y = (slot_id/sizedata->num_x_chars) * (sizedata->texture_height/sizedata->num_y_chars); - - glBindTexture(GL_TEXTURE_2D, sizedata->textures[texnum]); - glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, - sizedata->texture_width/sizedata->num_x_chars, - sizedata->texture_height/sizedata->num_y_chars, - font_texture_format, GL_UNSIGNED_BYTE, data); -} - -/* 8k of data used for rendering glyphs */ -static unsigned char glyphdata[(4096/64) * (4096/64)]; -static unsigned char glyphdata_outlined[(4096/64) * (4096/64)]; - -static int font_get_slot(FONTSIZEDATA *sizedata) -{ - int char_count = sizedata->num_x_chars*sizedata->num_y_chars; - if(sizedata->current_character < char_count) - { - int i = sizedata->current_character; - sizedata->current_character++; - return i; - } - - /* kick out the oldest */ - /* TODO: remove this linear search */ - { - int oldest = 0; - int i; - for(i = 1; i < char_count; i++) - { - if(sizedata->characters[i].touch_time < sizedata->characters[oldest].touch_time) - oldest = i; - } - - if(time_get()-sizedata->characters[oldest].touch_time < time_freq()) - { - font_increase_texture_size(sizedata); - return font_get_slot(sizedata); - } - - return oldest; - } -} - -static int font_render_glyph(FONT *font, FONTSIZEDATA *sizedata, int chr) -{ - FT_Bitmap *bitmap; - int slot_id = 0; - int slot_w = sizedata->texture_width / sizedata->num_x_chars; - int slot_h = sizedata->texture_height / sizedata->num_y_chars; - int slot_size = slot_w*slot_h; - int outline_thickness = 1; - int x = 1; - int y = 1; - int px, py; - - FT_Set_Pixel_Sizes(font->ft_face, 0, sizedata->font_size); - - if(FT_Load_Char(font->ft_face, chr, FT_LOAD_RENDER|FT_LOAD_NO_BITMAP)) - { - dbg_msg("font", "error loading glyph %d", chr); - return -1; - } - - bitmap = &font->ft_face->glyph->bitmap; - - /* fetch slot */ - slot_id = font_get_slot(sizedata); - if(slot_id < 0) - return -1; - - /* adjust spacing */ - if(sizedata->font_size >= 18) - outline_thickness = 2; - x += outline_thickness; - y += outline_thickness; - - /* prepare glyph data */ - mem_zero(glyphdata, slot_size); - - if(bitmap->pixel_mode == FT_PIXEL_MODE_GRAY) - { - for(py = 0; py < bitmap->rows; py++) - for(px = 0; px < bitmap->width; px++) - glyphdata[(py+y)*slot_w+px+x] = bitmap->buffer[py*bitmap->pitch+px]; - } - else if(bitmap->pixel_mode == FT_PIXEL_MODE_MONO) - { - for(py = 0; py < bitmap->rows; py++) - for(px = 0; px < bitmap->width; px++) - { - if(bitmap->buffer[py*bitmap->pitch+px/8]&(1<<(7-(px%8)))) - glyphdata[(py+y)*slot_w+px+x] = 255; - } - } - - if(0) for(py = 0; py < slot_w; py++) - for(px = 0; px < slot_h; px++) - glyphdata[py*slot_w+px] = 255; - - /* upload the glyph */ - font_upload_glyph(sizedata, 0, slot_id, chr, glyphdata); - - if(outline_thickness == 1) - { - grow(glyphdata, glyphdata_outlined, slot_w, slot_h); - font_upload_glyph(sizedata, 1, slot_id, chr, glyphdata_outlined); - } - else - { - grow(glyphdata, glyphdata_outlined, slot_w, slot_h); - grow(glyphdata_outlined, glyphdata, slot_w, slot_h); - font_upload_glyph(sizedata, 1, slot_id, chr, glyphdata); - } - - /* set char info */ - { - FONTCHAR *fontchr = &sizedata->characters[slot_id]; - float scale = 1.0f/sizedata->font_size; - float uscale = 1.0f/sizedata->texture_width; - float vscale = 1.0f/sizedata->texture_height; - int height = bitmap->rows + outline_thickness*2 + 2; - int width = bitmap->width + outline_thickness*2 + 2; - - fontchr->id = chr; - fontchr->height = height * scale; - fontchr->width = width * scale; - fontchr->offset_x = (font->ft_face->glyph->bitmap_left-1) * scale; - fontchr->offset_y = (sizedata->font_size - font->ft_face->glyph->bitmap_top) * scale; - fontchr->advance_x = (font->ft_face->glyph->advance.x>>6) * scale; - - fontchr->uvs[0] = (slot_id%sizedata->num_x_chars) / (float)(sizedata->num_x_chars); - fontchr->uvs[1] = (slot_id/sizedata->num_x_chars) / (float)(sizedata->num_y_chars); - fontchr->uvs[2] = fontchr->uvs[0] + width*uscale; - fontchr->uvs[3] = fontchr->uvs[1] + height*vscale; - } - - return slot_id; -} - -static FONTCHAR *font_get_char(FONT *font, FONTSIZEDATA *sizedata, int chr) -{ - FONTCHAR *fontchr = NULL; - - /* search for the character */ - /* TODO: remove this linear search */ - int i; - for(i = 0; i < sizedata->current_character; i++) - { - if(sizedata->characters[i].id == chr) - { - fontchr = &sizedata->characters[i]; - break; - } - } - - /* check if we need to render the character */ - if(!fontchr) - { - int index = font_render_glyph(font, sizedata, chr); - if(index >= 0) - fontchr = &sizedata->characters[index]; - } - - /* touch the character */ - /* TODO: don't call time_get here */ - if(fontchr) - fontchr->touch_time = time_get(); - - return fontchr; -} - -/* must only be called from the rendering function as the font must be set to the correct size */ -static void font_render_setup(FONT *font, int size) -{ - FT_Set_Pixel_Sizes(font->ft_face, 0, size); -} - -static float font_kerning(FONT *font, int left, int right) -{ - FT_Vector kerning = {0,0}; - FT_Get_Kerning(font->ft_face, left, right, FT_KERNING_DEFAULT, &kerning); - return (kerning.x>>6); -} - - -void gfx_text_ex(TEXT_CURSOR *cursor, const char *text, int length) -{ - FONT *font = cursor->font; - FONTSIZEDATA *sizedata = NULL; - - float screen_x0, screen_y0, screen_x1, screen_y1; - float fake_to_screen_x, fake_to_screen_y; - int actual_x, actual_y; - - int actual_size; - int i; - int got_new_line = 0; - float draw_x, draw_y; - float cursor_x, cursor_y; - const char *end; - - float size = cursor->font_size; - - /* to correct coords, convert to screen coords, round, and convert back */ - Graphics()->GetScreen(&screen_x0, &screen_y0, &screen_x1, &screen_y1); - - fake_to_screen_x = (Graphics()->ScreenWidth()/(screen_x1-screen_x0)); - fake_to_screen_y = (Graphics()->ScreenHeight()/(screen_y1-screen_y0)); - actual_x = cursor->x * fake_to_screen_x; - actual_y = cursor->y * fake_to_screen_y; - - cursor_x = actual_x / fake_to_screen_x; - cursor_y = actual_y / fake_to_screen_y; - - /* same with size */ - actual_size = size * fake_to_screen_y; - size = actual_size / fake_to_screen_y; - - /* fetch font data */ - if(!font) - font = default_font; - - if(!font) - return; - - sizedata = font_get_size(font, actual_size); - font_render_setup(font, actual_size); - - /* set length */ - if(length < 0) - length = strlen(text); - - end = text + length; - - /* if we don't want to render, we can just skip the first outline pass */ - i = 1; - if(cursor->flags&TEXTFLAG_RENDER) - i = 0; - - for(;i < 2; i++) - { - const char *current = (char *)text; - const char *end = current+length; - draw_x = cursor_x; - draw_y = cursor_y; - - if(cursor->flags&TEXTFLAG_RENDER) - { - // TODO: Make this better - glEnable(GL_TEXTURE_2D); - if (i == 0) - glBindTexture(GL_TEXTURE_2D, sizedata->textures[1]); - else - glBindTexture(GL_TEXTURE_2D, sizedata->textures[0]); - - Graphics()->QuadsBegin(); - if (i == 0) - Graphics()->SetColor(0.0f, 0.0f, 0.0f, 0.3f*text_a); - else - Graphics()->SetColor(text_r, text_g, text_b, text_a); - } - - while(current < end) - { - int new_line = 0; - const char *batch_end = end; - if(cursor->line_width > 0 && !(cursor->flags&TEXTFLAG_STOP_AT_END)) - { - int wlen = word_length((char *)current); - TEXT_CURSOR compare = *cursor; - compare.x = draw_x; - compare.y = draw_y; - compare.flags &= ~TEXTFLAG_RENDER; - compare.line_width = -1; - gfx_text_ex(&compare, text, wlen); - - if(compare.x-draw_x > cursor->line_width) - { - /* word can't be fitted in one line, cut it */ - TEXT_CURSOR cutter = *cursor; - cutter.charcount = 0; - cutter.x = draw_x; - cutter.y = draw_y; - cutter.flags &= ~TEXTFLAG_RENDER; - cutter.flags |= TEXTFLAG_STOP_AT_END; - - gfx_text_ex(&cutter, (const char *)current, wlen); - wlen = cutter.charcount; - new_line = 1; - - if(wlen <= 3) /* if we can't place 3 chars of the word on this line, take the next */ - wlen = 0; - } - else if(compare.x-cursor->start_x > cursor->line_width) - { - new_line = 1; - wlen = 0; - } - - batch_end = current + wlen; - } - - while(current < batch_end) - { - const char *tmp; - float advance = 0; - int character = 0; - int nextcharacter = 0; - FONTCHAR *chr; - - // TODO: UTF-8 decode - character = str_utf8_decode(¤t); - tmp = current; - nextcharacter = str_utf8_decode(&tmp); - - if(character == '\n') - { - draw_x = cursor->start_x; - draw_y += size; - draw_x = (int)(draw_x * fake_to_screen_x) / fake_to_screen_x; /* realign */ - draw_y = (int)(draw_y * fake_to_screen_y) / fake_to_screen_y; - continue; - } - - chr = font_get_char(font, sizedata, character); - - if(chr) - { - if(cursor->flags&TEXTFLAG_RENDER) - { - Graphics()->QuadsSetSubset(chr->uvs[0], chr->uvs[1], chr->uvs[2], chr->uvs[3]); - Graphics()->QuadsDrawTL(draw_x+chr->offset_x*size, draw_y+chr->offset_y*size, chr->width*size, chr->height*size); - } - - advance = chr->advance_x + font_kerning(font, character, nextcharacter)/size; - } - - if(cursor->flags&TEXTFLAG_STOP_AT_END && draw_x+advance*size-cursor->start_x > cursor->line_width) - { - /* we hit the end of the line, no more to render or count */ - current = end; - break; - } - - draw_x += advance*size; - cursor->charcount++; - } - - if(new_line) - { - draw_x = cursor->start_x; - draw_y += size; - got_new_line = 1; - draw_x = (int)(draw_x * fake_to_screen_x) / fake_to_screen_x; /* realign */ - draw_y = (int)(draw_y * fake_to_screen_y) / fake_to_screen_y; - } - } - - if(cursor->flags&TEXTFLAG_RENDER) - Graphics()->QuadsEnd(); - } - - cursor->x = draw_x; - - if(got_new_line) - cursor->y = draw_y; -} |