X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Fvideo%2Ffont.cpp;h=f938279f6d334f71def6bd3a84ddffdf196f5a1c;hb=4f423b9bbb6fa694b8c6bcc338e069aad45db3e3;hp=395b6c331c83cc61d26e79e6c503184165357bde;hpb=2f7bf5676ef8b6b9ff3cf28468efe536888808b5;p=supertux.git

diff --git a/src/video/font.cpp b/src/video/font.cpp
index 395b6c331..f938279f6 100644
--- a/src/video/font.cpp
+++ b/src/video/font.cpp
@@ -26,17 +26,22 @@
 
 #include <SDL_image.h>
 #include "physfs/physfs_sdl.hpp"
+#include <physfs.h>
+#include "file_system.hpp"
 
-#include "lisp/parser.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"
 
 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
 {
@@ -48,7 +53,12 @@ struct UTF8Iterator
     : text(text_),
       pos(0)
   {
-    chr = decode_utf8(text, pos);
+    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
@@ -59,7 +69,7 @@ struct UTF8Iterator
   UTF8Iterator& operator++() {
     try {
       chr = decode_utf8(text, pos);
-    } catch (std::runtime_error) {
+    } catch (std::exception) {
       log_debug << "Malformed utf-8 sequence beginning with " << *((uint32_t*)(text.c_str() + pos)) << " found " << std::endl;
       chr = 0;
       ++pos;
@@ -89,83 +99,185 @@ bool vline_empty(SDL_Surface* surface, int x, int start_y, int end_y, Uint8 thre
 }
 } // namespace
 
-Font::Font(GlyphWidth glyph_width_, 
-           const std::string& file, const std::string& shadowfile,
-           int char_width, int char_height_, int shadowsize)
-  : glyph_width(glyph_width_),
-    glyph_surface(0), shadow_chars(0),
-    char_height(char_height_), 
-    shadowsize(shadowsize)
+Font::Font(GlyphWidth glyph_width_,
+           const std::string& filename,
+           int shadowsize_)
+:   glyph_width(glyph_width_),
+    shadowsize(shadowsize_),
+    glyphs(65536)
 {
-  glyph_surface = new Surface(file);
-  shadow_chars  = new Surface(shadowfile);
-
-  first_char = 32;
-  char_count = ((int) glyph_surface->get_height() / char_height) * 16;
-
-  for(uint32_t i = 0; i < char_count; ++i)
-    {
-      float x = (i % 16) * char_width;
-      float y = (i / 16) * char_height;
-      glyphs.push_back(Rect(x, y,
-                            x + char_width, y + char_height));
+  for(unsigned int i=0; i<65536;i++) glyphs[i].surface_idx = -1;
+
+  const std::string fontdir = FileSystem::dirname(filename);
+  const std::string fontname = FileSystem::basename(filename);
+
+  // 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);
+      }
     }
+  PHYSFS_freeList(rc);
 }
 
-Font::Font(GlyphWidth glyph_width_, const std::string& filename, int char_width, int char_height_)
-  : glyph_width(glyph_width_),
-    glyph_surface(0), shadow_chars(0), 
-    char_height(char_height_), 
-    shadowsize(0)
+void 
+Font::loadFontFile(const std::string &filename)
 {
-  glyph_surface = new Surface(filename);
+  lisp::Parser parser;
+  log_debug << "Loading font: " << filename << std::endl;
+  const lisp::Lisp* root = parser.parse(filename);
+  const lisp::Lisp* config_l = root->get_lisp("supertux-font");
 
-  first_char = 32;
-  char_count = ((int) glyph_surface->get_height() / char_height) * 16;
+  if(!config_l) {
+    std::ostringstream msg;
+    msg << "Font file:" << filename << ": is not a supertux-font file";
+    throw std::runtime_error(msg.str());
+    }
+
+  int def_char_width=0;
 
-  // Load the surface into RAM and scan the pixel data for characters
-  SDL_Surface* surface = IMG_Load_RW(get_physfs_SDLRWops(filename), 1);
-  if(surface == NULL) {
+  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 << "Couldn't load image '" << filename << "' :" << SDL_GetError();
+    msg << "Font:" << filename << ": misses glyph-height";
     throw std::runtime_error(msg.str());
-  }
+    }
 
-  SDL_LockSurface(surface);
+  lisp::ListIterator iter(config_l);
+  while(iter.next()) {
+    const std::string& token = iter.item();
+    if( token == "surface" ) {
+      const lisp::Lisp * glyphs_val = iter.lisp();
+      int local_char_width;
+      bool monospaced;
+      GlyphWidth local_glyph_width;
+      std::string glyph_image;
+      std::string shadow_image;
+      std::vector<std::string> 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_vector("chars", chars) || chars.size() == 0) {
+        std::ostringstream msg;
+        msg << "Font:" << filename << ": missing chars definition";
+        throw std::runtime_error(msg.str());
+        }
 
-  for(uint32_t i = 0; i < char_count; ++i)
-    {
-      int x = (i % 16) * char_width;
-      int y = (i / 16) * char_height;
-
-      int left = x;
-      while (left < x + char_width &&
-             vline_empty(surface, left, y, y + char_height, 0))
-        left += 1;
-
-      int right = x + char_width - 1;
-      while (right > left && 
-             vline_empty(surface, right, y, y + char_height, 0))
-        right -= 1;
-
-      if (left <= right)
-        glyphs.push_back(Rect(left,  y,
-                              right+1, y + char_height));
-      else // glyph is completly transparent
-        glyphs.push_back(Rect(x,  y,
-                              x + char_width, y + char_height));
+      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);
+      }
     }
+}
+
+void 
+Font::loadFontSurface(
+  const std::string &glyphimage,
+  const std::string &shadowimage,
+  const std::vector<std::string> &chars,
+  GlyphWidth glyph_width,
+  int char_width
+  )
+{
+  Surface glyph_surface = Surface("images/engine/fonts/" + glyphimage);
+  Surface shadow_surface = Surface("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;
+ 
+  SDL_Surface *surface = NULL;
   
-  SDL_UnlockSurface(surface);
+  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);
+    if(surface == NULL) {
+      std::ostringstream msg;
+      msg << "Couldn't load image '" << glyphimage << "' :" << SDL_GetError();
+      throw std::runtime_error(msg.str());
+      }
+    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;
+      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);
+        glyph.offset  = Vector(0, 0);
+        glyph.advance = char_width;
+        }
+      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
+        }
 
-  SDL_FreeSurface(surface);
+      glyphs[*chr] = glyph;
+      }
+    if( col>0 && col <= wrap ) { 
+      col = 0;
+      row++;
+      }
+    }
+  
+  if( surface != NULL ) {
+    SDL_UnlockSurface(surface);
+    SDL_FreeSurface(surface);
+    }
 }
 
 Font::~Font()
 {
-  delete glyph_surface;
-  delete shadow_chars;
 }
 
 float
@@ -183,8 +295,10 @@ Font::get_text_width(const std::string& text) const
         }
       else
         {
-          int idx = chr2glyph(*it);
-          curr_width += glyphs[idx].get_width();
+          if( glyphs.at(*it).surface_idx != -1 )
+            curr_width += glyphs[*it].advance;
+          else 
+            curr_width += glyphs[0x20].advance;
         }
     }
 
@@ -195,7 +309,7 @@ float
 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
@@ -210,7 +324,7 @@ Font::get_text_height(const std::string& text) const
 float
 Font::get_height() const
 {
-  return char_height; 
+  return char_height;
 }
 
 std::string
@@ -235,9 +349,36 @@ Font::wrap_to_chars(const std::string& s, int line_length, std::string* overflow
   return s;
 }
 
+std::string
+Font::wrap_to_width(const std::string& s_, float width, std::string* overflow)
+{
+  std::string s = s_;
+
+  // if text is already smaller, return full text
+  if (get_text_width(s) <= width) {
+    if (overflow) *overflow = "";
+    return s;
+  }
+
+  // if we can find a whitespace character to break at, return text up to this character
+  for (int i = s.length()-1; i >= 0; i--) {
+    std::string s2 = s.substr(0,i);
+    if (s[i] != ' ') continue;
+    if (get_text_width(s2) <= width) {
+      if (overflow) *overflow = s.substr(i+1);
+      return s.substr(0, i);
+    }
+  }
+  
+  // FIXME: hard-wrap at width, taking care of multibyte characters
+  if (overflow) *overflow = "";
+  return s;
+}
+
 void
-Font::draw(const std::string& text, const Vector& pos_, FontAlignment alignment,
-           DrawingEffect drawing_effect, float alpha) const
+Font::draw(Renderer *renderer, const std::string& text, const Vector& pos_,
+           FontAlignment alignment, DrawingEffect drawing_effect, Color color,
+           float alpha) const
 {
   float x = pos_.x;
   float y = pos_.y;
@@ -251,82 +392,80 @@ Font::draw(const std::string& text, const Vector& pos_, FontAlignment alignment,
 
           // 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);
-          
-          draw_text(temp, pos, drawing_effect, alpha);
+
+          // 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<int>(pos.x);
+
+          draw_text(renderer, temp, pos, drawing_effect, color, alpha);
 
           if (i == text.size())
             break;
 
-          y += char_height + 2;      
+          y += char_height + 2;
           last = i + 1;
         }
     }
 }
 
 void
-Font::draw_text(const std::string& text, const Vector& pos,
-                DrawingEffect drawing_effect, float alpha) const
+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(shadow_chars, text, pos + Vector(shadowsize, shadowsize),
-               drawing_effect, alpha);
-
-  draw_chars(glyph_surface, text, pos, drawing_effect, alpha);
-}
-
-int
-Font::chr2glyph(uint32_t chr) const
-{
-  int glyph_index = chr - first_char;
-  
-  // we don't have the control chars 0x80-0xa0 in the font
-  if (chr >= 0x80) { // non-ascii character
-    glyph_index -= 32;
-    if(chr <= 0xa0) {
-      log_debug << "Unsupported utf-8 character '" << chr << "' found" << std::endl;
-      glyph_index = 0;
-    }
-  }
+      draw_chars(renderer, false, text, 
+                 pos + Vector(shadowsize, shadowsize), drawing_effect, Color(1,1,1), alpha);
 
-  if(glyph_index < 0 || glyph_index >= (int) char_count) {
-    log_debug << "Unsupported utf-8 character found" << std::endl;
-    glyph_index = 0;
-  }
-  
-  return glyph_index;
+  draw_chars(renderer, true, text, pos, drawing_effect, color, alpha);
 }
 
 void
-Font::draw_chars(Surface* pchars, const std::string& text, const Vector& pos,
-                 DrawingEffect drawing_effect, float alpha) const
+Font::draw_chars(Renderer *renderer, bool notshadow, const std::string& text,
+                 const Vector& pos, DrawingEffect drawing_effect, Color color,
+                 float alpha) const
 {
   Vector p = pos;
+
   for(UTF8Iterator it(text); !it.done(); ++it)
     {
-      int font_index = chr2glyph(*it);
-
-      if(*it == '\n') 
-        { 
+      if(*it == '\n')
+        {
           p.x = pos.x;
           p.y += char_height + 2;
         }
-      else if(*it == ' ') 
+      else if(*it == ' ')
         {
-          p.x += glyphs[font_index].get_width();
-        } 
-      else 
+          p.x += glyphs[0x20].advance;
+        }
+      else
         {
-          const Rect& glyph = glyphs[font_index];
-          pchars->draw_part(glyph.get_left(), glyph.get_top(),
-                            p.x, p.y,
-                            glyph.get_width(), glyph.get_height(),
-                            alpha, drawing_effect);
-          p.x += glyphs[font_index].get_width();
+          Glyph glyph;
+          if( glyphs.at(*it).surface_idx != -1 )
+            glyph = glyphs[*it];
+          else 
+            glyph = glyphs[0x20];
+
+          DrawingRequest request;
+
+          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]);
+
+          request.request_data = &surfacepartrequest;
+          renderer->draw_surface_part(request);
+
+          p.x += glyph.advance;
         }
     }
 }