X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fvideo%2Ffont.cpp;h=90b32afbf33da80bcffda85a0e248de4797389e0;hb=101b0a78b682a8b6b87407edc625adaf7c51da40;hp=e0a8e1977dd59eee6c2be55641e27687232a019b;hpb=65a0b6f7ec1123cff959e13e1a4919dc70fe4e85;p=supertux.git diff --git a/src/video/font.cpp b/src/video/font.cpp index e0a8e1977..90b32afbf 100644 --- a/src/video/font.cpp +++ b/src/video/font.cpp @@ -1,13 +1,11 @@ -// $Id$ -// // SuperTux // Copyright (C) 2006 Matthias Braun -// Ingo Ruhnke +// Ingo Ruhnke // -// This program is free software; you can redistribute it and/or -// modify it under the terms of the GNU General Public License -// as published by the Free Software Foundation; either version 2 -// of the License, or (at your option) any later version. +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of @@ -15,96 +13,59 @@ // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License -// along with this program; if not, write to the Free Software -// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +// along with this program. If not, see . #include -#include -#include +#include +#include +#include #include - #include -#include "physfs/physfs_sdl.hpp" #include -#include "file_system.hpp" -#include "lisp/lisp.hpp" -#include "lisp/parser.hpp" #include "lisp/list_iterator.hpp" -#include "screen.hpp" -#include "font.hpp" -#include "renderer.hpp" -#include "drawing_context.hpp" -#include "log.hpp" +#include "lisp/parser.hpp" +#include "physfs/physfs_sdl.hpp" +#include "supertux/screen.hpp" +#include "util/file_system.hpp" +#include "util/log.hpp" +#include "util/utf8_iterator.hpp" +#include "video/drawing_context.hpp" +#include "video/drawing_request.hpp" +#include "video/font.hpp" +#include "video/renderer.hpp" namespace { -bool has_multibyte_mark(unsigned char c); -uint32_t decode_utf8(const std::string& text, size_t& p); -std::string encode_utf8(uint32_t code); - -struct UTF8Iterator -{ - const std::string& text; - std::string::size_type pos; - uint32_t chr; - - UTF8Iterator(const std::string& text_) - : text(text_), - pos(0) - { - try { - chr = decode_utf8(text, pos); - } catch (std::exception) { - log_debug << "Malformed utf-8 sequence beginning with " << *((uint32_t*)(text.c_str() + pos)) << " found " << std::endl; - chr = 0; - } - } - - bool done() const - { - return pos > text.size(); - } - - UTF8Iterator& operator++() { - try { - chr = decode_utf8(text, pos); - } catch (std::exception) { - log_debug << "Malformed utf-8 sequence beginning with " << *((uint32_t*)(text.c_str() + pos)) << " found " << std::endl; - chr = 0; - ++pos; - } - - return *this; - } - - uint32_t operator*() const { - return chr; - } -}; bool vline_empty(SDL_Surface* surface, int x, int start_y, int end_y, Uint8 threshold) { Uint8* pixels = (Uint8*)surface->pixels; for(int y = start_y; y < end_y; ++y) + { + const Uint8& p = pixels[surface->pitch*y + x*surface->format->BytesPerPixel + 3]; + if (p > threshold) { - const Uint8& p = pixels[surface->pitch*y + x*surface->format->BytesPerPixel + 3]; - if (p > threshold) - { - return false; - } + return false; } + } return true; } + } // namespace Font::Font(GlyphWidth glyph_width_, const std::string& filename, - int shadowsize_) -: glyph_width(glyph_width_), - shadowsize(shadowsize_), - glyphs(65536) + int shadowsize_) : + glyph_width(glyph_width_), + glyph_surfaces(), + shadow_surfaces(), + char_height(), + shadowsize(shadowsize_), + border(0), + rtl(false), + glyphs(65536) { for(unsigned int i=0; i<65536;i++) glyphs[i].surface_idx = -1; @@ -114,15 +75,15 @@ Font::Font(GlyphWidth glyph_width_, // scan for prefix-filename in addons search path char **rc = PHYSFS_enumerateFiles(fontdir.c_str()); for (char **i = rc; *i != NULL; i++) { - std::string filename(*i); - if( filename.rfind(fontname) != std::string::npos ) { - loadFontFile(fontdir + filename); - } + std::string filename_(*i); + if( filename_.rfind(fontname) != std::string::npos ) { + loadFontFile(fontdir + filename_); } + } PHYSFS_freeList(rc); } -void +void Font::loadFontFile(const std::string &filename) { lisp::Parser parser; @@ -134,19 +95,22 @@ Font::loadFontFile(const std::string &filename) std::ostringstream msg; msg << "Font file:" << filename << ": is not a supertux-font file"; throw std::runtime_error(msg.str()); - } + } int def_char_width=0; if( !config_l->get("glyph-width",def_char_width) ) { log_warning << "Font:"<< filename << ": misses default glyph-width" << std::endl; - } - + } + if( !config_l->get("glyph-height",char_height) ) { std::ostringstream msg; msg << "Font:" << filename << ": misses glyph-height"; throw std::runtime_error(msg.str()); - } + } + + config_l->get("glyph-border", border); + config_l->get("rtl", rtl); lisp::ListIterator iter(config_l); while(iter.next()) { @@ -161,64 +125,64 @@ Font::loadFontFile(const std::string &filename) std::vector chars; if( ! glyphs_val->get("glyph-width", local_char_width) ) { local_char_width = def_char_width; - } + } if( ! glyphs_val->get("monospace", monospaced ) ) { local_glyph_width = glyph_width; - } + } else { if( monospaced ) local_glyph_width = FIXED; else local_glyph_width = VARIABLE; - } + } if( ! glyphs_val->get("glyphs", glyph_image) ) { std::ostringstream msg; msg << "Font:" << filename << ": missing glyphs image"; throw std::runtime_error(msg.str()); - } + } if( ! glyphs_val->get("shadows", shadow_image) ) { std::ostringstream msg; msg << "Font:" << filename << ": missing shadows image"; throw std::runtime_error(msg.str()); - } + } if( ! glyphs_val->get("chars", chars) || chars.size() == 0) { std::ostringstream msg; msg << "Font:" << filename << ": missing chars definition"; throw std::runtime_error(msg.str()); - } + } if( local_char_width==0 ) { std::ostringstream msg; msg << "Font:" << filename << ": misses glyph-width for some surface"; throw std::runtime_error(msg.str()); - } + } loadFontSurface(glyph_image, shadow_image, chars, - local_glyph_width, local_char_width); - } + local_glyph_width, local_char_width); } + } } -void +void Font::loadFontSurface( const std::string &glyphimage, const std::string &shadowimage, const std::vector &chars, - GlyphWidth glyph_width, + GlyphWidth glyph_width_, int char_width ) { - Surface glyph_surface = Surface("images/engine/fonts/" + glyphimage); - Surface shadow_surface = Surface("images/engine/fonts/" + shadowimage); + SurfacePtr glyph_surface = Surface::create("images/engine/fonts/" + glyphimage); + SurfacePtr shadow_surface = Surface::create("images/engine/fonts/" + shadowimage); int surface_idx = glyph_surfaces.size(); glyph_surfaces.push_back(glyph_surface); shadow_surfaces.push_back(shadow_surface); int row=0, col=0; - int wrap = glyph_surface.get_width() / char_width; - + int wrap = glyph_surface->get_width() / char_width; + SDL_Surface *surface = NULL; - - if( glyph_width == VARIABLE ) { + + if( glyph_width_ == VARIABLE ) { //this does not work: // surface = ((SDL::Texture *)glyph_surface.get_texture())->get_texture(); surface = IMG_Load_RW(get_physfs_SDLRWops("images/engine/fonts/"+glyphimage), 1); @@ -226,54 +190,68 @@ Font::loadFontSurface( std::ostringstream msg; msg << "Couldn't load image '" << glyphimage << "' :" << SDL_GetError(); throw std::runtime_error(msg.str()); - } - SDL_LockSurface(surface); } + SDL_LockSurface(surface); + } for( unsigned int i = 0; i < chars.size(); i++) { for(UTF8Iterator chr(chars[i]); !chr.done(); ++chr) { - int y = row * char_height; - int x = col * char_width; + int y = row * (char_height + 2*border) + border; + int x = col * (char_width + 2*border) + border; if( ++col == wrap ) { col=0; row++; } if( *chr == 0x0020 && glyphs[0x20].surface_idx != -1) continue; - + Glyph glyph; glyph.surface_idx = surface_idx; - - if( glyph_width == FIXED ) { - glyph.rect = Rect(x, y, x + char_width, y + char_height); + + if( glyph_width_ == FIXED || isdigit(*chr) ) + { + glyph.rect = Rectf(x, y, x + char_width, y + char_height); glyph.offset = Vector(0, 0); glyph.advance = char_width; + } + else + { + if (y + char_height > surface->h) + { + log_warning << "error: font definition contains more letter then the images: " << glyphimage << std::endl; + goto abort; } - else { + int left = x; while (left < x + char_width && vline_empty(surface, left, y, y + char_height, 64)) left += 1; int right = x + char_width - 1; while (right > left && vline_empty(surface, right, y, y + char_height, 64)) right -= 1; - + if (left <= right) - glyph.rect = Rect(left, y, right+1, y + char_height); - else // glyph is completely transparent - glyph.rect = Rect(x, y, x + char_width, y + char_height); - - glyph.offset = Vector(0, 0); - glyph.advance = glyph.rect.get_width() + 1; // FIXME: might be useful to make spacing configurable + { + glyph.offset = Vector(x-left, 0); + glyph.advance = right - left + 1 + 1; // FIXME: might be useful to make spacing configurable + } + else + { // glyph is completly transparent + glyph.offset = Vector(0, 0); + glyph.advance = char_width + 1; // FIXME: might be useful to make spacing configurable } - glyphs[*chr] = glyph; + glyph.rect = Rectf(x, y, x + char_width, y + char_height); } - if( col>0 && col <= wrap ) { + + glyphs[*chr] = glyph; + } + if( col>0 && col <= wrap ) { col = 0; row++; - } } - + } +abort: + if( surface != NULL ) { SDL_UnlockSurface(surface); SDL_FreeSurface(surface); - } + } } Font::~Font() @@ -287,20 +265,20 @@ Font::get_text_width(const std::string& text) const float last_width = 0; for(UTF8Iterator it(text); !it.done(); ++it) + { + if (*it == '\n') { - if (*it == '\n') - { - last_width = std::max(last_width, curr_width); - curr_width = 0; - } + last_width = std::max(last_width, curr_width); + curr_width = 0; + } + else + { + if( glyphs.at(*it).surface_idx != -1 ) + curr_width += glyphs[*it].advance; else - { - if( glyphs.at(*it).surface_idx != -1 ) - curr_width += glyphs[*it].advance; - else - curr_width += glyphs[0x20].advance; - } + curr_width += glyphs[0x20].advance; } + } return std::max(curr_width, last_width); } @@ -311,12 +289,12 @@ Font::get_text_height(const std::string& text) const std::string::size_type text_height = char_height; for(std::string::const_iterator it = text.begin(); it != text.end(); ++it) - { // since UTF8 multibyte characters are decoded with values - // outside the ASCII range there is no risk of overlapping and - // thus we don't need to decode the utf-8 string - if (*it == '\n') - text_height += char_height + 2; - } + { // since UTF8 multibyte characters are decoded with values + // outside the ASCII range there is no risk of overlapping and + // thus we don't need to decode the utf-8 string + if (*it == '\n') + text_height += char_height + 2; + } return text_height; } @@ -369,7 +347,7 @@ Font::wrap_to_width(const std::string& s_, float width, std::string* overflow) return s.substr(0, i); } } - + // FIXME: hard-wrap at width, taking care of multibyte characters if (overflow) *overflow = ""; return s; @@ -385,32 +363,32 @@ Font::draw(Renderer *renderer, const std::string& text, const Vector& pos_, std::string::size_type last = 0; for(std::string::size_type i = 0;; ++i) + { + if (text[i] == '\n' || i == text.size()) { - if (text[i] == '\n' || i == text.size()) - { - std::string temp = text.substr(last, i - last); + std::string temp = text.substr(last, i - last); - // calculate X positions based on the alignment type - Vector pos = Vector(x, y); + // calculate X positions based on the alignment type + Vector pos = Vector(x, y); - if(alignment == ALIGN_CENTER) - pos.x -= get_text_width(temp) / 2; - else if(alignment == ALIGN_RIGHT) - pos.x -= get_text_width(temp); + if(alignment == ALIGN_CENTER) + pos.x -= get_text_width(temp) / 2; + else if(alignment == ALIGN_RIGHT) + pos.x -= get_text_width(temp); - // Cast font position to integer to get a clean drawing result and - // no blurring as we would get with subpixel positions - pos.x = static_cast(pos.x); + // Cast font position to integer to get a clean drawing result and + // no blurring as we would get with subpixel positions + pos.x = static_cast(pos.x); - draw_text(renderer, temp, pos, drawing_effect, color, alpha); + draw_text(renderer, temp, pos, drawing_effect, color, alpha); - if (i == text.size()) - break; + if (i == text.size()) + break; - y += char_height + 2; - last = i + 1; - } + y += char_height + 2; + last = i + 1; } + } } void @@ -418,10 +396,10 @@ Font::draw_text(Renderer *renderer, const std::string& text, const Vector& pos, DrawingEffect drawing_effect, Color color, float alpha) const { if(shadowsize > 0) - draw_chars(renderer, false, text, - pos + Vector(shadowsize, shadowsize), drawing_effect, Color(1,1,1), alpha); + draw_chars(renderer, false, rtl ? std::string(text.rbegin(), text.rend()) : text, + pos + Vector(shadowsize, shadowsize), drawing_effect, Color(1,1,1), alpha); - draw_chars(renderer, true, text, pos, drawing_effect, color, alpha); + draw_chars(renderer, true, rtl ? std::string(text.rbegin(), text.rend()) : text, pos, drawing_effect, color, alpha); } void @@ -432,103 +410,42 @@ Font::draw_chars(Renderer *renderer, bool notshadow, const std::string& text, Vector p = pos; for(UTF8Iterator it(text); !it.done(); ++it) + { + if(*it == '\n') { - if(*it == '\n') - { - p.x = pos.x; - p.y += char_height + 2; - } - else if(*it == ' ') - { - p.x += glyphs[0x20].advance; - } + p.x = pos.x; + p.y += char_height + 2; + } + else if(*it == ' ') + { + p.x += glyphs[0x20].advance; + } + else + { + Glyph glyph; + if( glyphs.at(*it).surface_idx != -1 ) + glyph = glyphs[*it]; else - { - Glyph glyph; - if( glyphs.at(*it).surface_idx != -1 ) - glyph = glyphs[*it]; - else - glyph = glyphs[0x20]; + glyph = glyphs[0x20]; - DrawingRequest request; + DrawingRequest request; - request.pos = p + glyph.offset; - request.drawing_effect = drawing_effect; - request.color = color; - request.alpha = alpha; + request.pos = p + glyph.offset; + request.drawing_effect = drawing_effect; + request.color = color; + request.alpha = alpha; - SurfacePartRequest surfacepartrequest; - surfacepartrequest.size = glyph.rect.p2 - glyph.rect.p1; - surfacepartrequest.source = glyph.rect.p1; - surfacepartrequest.surface = notshadow ? &(glyph_surfaces[glyph.surface_idx]) : &(shadow_surfaces[glyph.surface_idx]); + SurfacePartRequest surfacepartrequest; + surfacepartrequest.srcrect = glyph.rect; + surfacepartrequest.dstsize = glyph.rect.get_size(); + surfacepartrequest.surface = notshadow ? glyph_surfaces[glyph.surface_idx].get() : shadow_surfaces[glyph.surface_idx].get(); - request.request_data = &surfacepartrequest; - renderer->draw_surface_part(request); + request.request_data = &surfacepartrequest; + renderer->draw_surface_part(request); - p.x += glyph.advance; - } + p.x += glyph.advance; } -} - - -namespace { - -/** - * returns true if this byte matches a bitmask of 10xx.xxxx, i.e. it is the 2nd, 3rd or 4th byte of a multibyte utf8 string - */ -bool has_multibyte_mark(unsigned char c) { - return ((c & 0300) == 0200); -} - -/** - * gets unicode character at byte position @a p of UTF-8 encoded @a - * text, then advances @a p to the next character. - * - * @throws std::runtime_error if decoding fails. - * See unicode standard section 3.10 table 3-5 and 3-6 for details. - */ -uint32_t decode_utf8(const std::string& text, size_t& p) -{ - uint32_t c1 = (unsigned char) text[p+0]; - - if (has_multibyte_mark(c1)) std::runtime_error("Malformed utf-8 sequence"); - - if ((c1 & 0200) == 0000) { - // 0xxx.xxxx: 1 byte sequence - p+=1; - return c1; - } - else if ((c1 & 0340) == 0300) { - // 110x.xxxx: 2 byte sequence - if(p+1 >= text.size()) throw std::range_error("Malformed utf-8 sequence"); - uint32_t c2 = (unsigned char) text[p+1]; - if (!has_multibyte_mark(c2)) throw std::runtime_error("Malformed utf-8 sequence"); - p+=2; - return (c1 & 0037) << 6 | (c2 & 0077); } - else if ((c1 & 0360) == 0340) { - // 1110.xxxx: 3 byte sequence - if(p+2 >= text.size()) throw std::range_error("Malformed utf-8 sequence"); - uint32_t c2 = (unsigned char) text[p+1]; - uint32_t c3 = (unsigned char) text[p+2]; - if (!has_multibyte_mark(c2)) throw std::runtime_error("Malformed utf-8 sequence"); - if (!has_multibyte_mark(c3)) throw std::runtime_error("Malformed utf-8 sequence"); - p+=3; - return (c1 & 0017) << 12 | (c2 & 0077) << 6 | (c3 & 0077); - } - else if ((c1 & 0370) == 0360) { - // 1111.0xxx: 4 byte sequence - if(p+3 >= text.size()) throw std::range_error("Malformed utf-8 sequence"); - uint32_t c2 = (unsigned char) text[p+1]; - uint32_t c3 = (unsigned char) text[p+2]; - uint32_t c4 = (unsigned char) text[p+4]; - if (!has_multibyte_mark(c2)) throw std::runtime_error("Malformed utf-8 sequence"); - if (!has_multibyte_mark(c3)) throw std::runtime_error("Malformed utf-8 sequence"); - if (!has_multibyte_mark(c4)) throw std::runtime_error("Malformed utf-8 sequence"); - p+=4; - return (c1 & 0007) << 18 | (c2 & 0077) << 12 | (c3 & 0077) << 6 | (c4 & 0077); - } - throw std::runtime_error("Malformed utf-8 sequence"); } -} // namespace +/* EOF */