rnd-20061019-1-src

[rocksndiamonds.git] / src / libgame / text.c

diff --git a/src/libgame/text.c b/src/libgame/text.c
index 132016de40c9d8d1e2fbd20d23640ba9d4853458..59c2ba3a6e9fa585e11d2ae7dcb2a64393314dc9 100644 (file)
--- a/src/libgame/text.c
+++ b/src/libgame/text.c
@@ -1,7 +1,7 @@
 /***********************************************************
 * Artsoft Retro-Game Library                               *
 *----------------------------------------------------------*
-* (c) 1994-2002 Artsoft Entertainment                      *
+* (c) 1994-2006 Artsoft Entertainment                      *
 *               Holger Schemel                             *
 *               Detmolder Strasse 189                      *
 *               33604 Bielefeld                            *
@@ -130,6 +130,13 @@ void FreeFontInfo(struct FontBitmapInfo *font_bitmap_info)
   free(font_bitmap_info);
 }
 
+struct FontBitmapInfo *getFontBitmapInfo(int font_nr)
+{
+  int font_bitmap_id = gfx.select_font_function(font_nr);
+
+  return &gfx.font_bitmap_info[font_bitmap_id];
+}
+
 int getFontWidth(int font_nr)
 {
   int font_bitmap_id = gfx.select_font_function(font_nr);
@@ -233,6 +240,18 @@ void DrawTextSCentered(int y, int font_nr, char *text)
           gfx.sy + y, text, font_nr);
 }
 
+void DrawTextSAligned(int x, int y, char *text, int font_nr, int align)
+{
+  DrawText(gfx.sx + ALIGNED_XPOS(x, getTextWidth(text, font_nr), align),
+          gfx.sx + y, text, font_nr);
+}
+
+void DrawTextAligned(int x, int y, char *text, int font_nr, int align)
+{
+  DrawText(ALIGNED_XPOS(x, getTextWidth(text, font_nr), align),
+          y, text, font_nr);
+}
+
 void DrawText(int x, int y, char *text, int font_nr)
 {
   int mask_mode = BLIT_OPAQUE;
@@ -255,6 +274,11 @@ void DrawTextExt(DrawBuffer *dst_bitmap, int dst_x, int dst_y, char *text,
   struct FontBitmapInfo *font = &gfx.font_bitmap_info[font_bitmap_id];
   int font_width = getFontWidth(font_nr);
   int font_height = getFontHeight(font_nr);
+#if 0
+  int border_1 = gfx.sx + gfx.sxsize;
+  int border_2 = gfx.dx + gfx.dxsize;
+  int dst_x_start = dst_x;
+#endif
   Bitmap *src_bitmap;
   int src_x, src_y;
   char *text_ptr = text;
@@ -262,9 +286,13 @@ void DrawTextExt(DrawBuffer *dst_bitmap, int dst_x, int dst_y, char *text,
   if (font->bitmap == NULL)
     return;
 
+  /* skip text to be printed outside the window (left/right will be clipped) */
+  if (dst_y < 0 || dst_y + font_height > video.height)
+    return;
+
   /* add offset for drawing font characters */
-  dst_x += font->draw_x;
-  dst_y += font->draw_y;
+  dst_x += font->draw_xoffset;
+  dst_y += font->draw_yoffset;
 
   while (*text_ptr)
   {
@@ -275,6 +303,25 @@ void DrawTextExt(DrawBuffer *dst_bitmap, int dst_x, int dst_y, char *text,
 
     getFontCharSource(font_nr, c, &src_bitmap, &src_x, &src_y);
 
+    /* clip text at the left side of the window */
+    if (dst_x < 0)
+    {
+      dst_x += font_width;
+
+      continue;
+    }
+
+    /* clip text at the right side of the window */
+#if 1
+    if (dst_x + font_width > video.width)
+      break;
+#else
+    /* (this does not work well when trying to print text to whole screen) */
+    if ((dst_x_start < border_1 && dst_x + font_width > border_1) ||
+       (dst_x_start < border_2 && dst_x + font_width > border_2))
+      break;
+#endif
+
     if (mask_mode == BLIT_INVERSE)     /* special mode for text gadgets */
     {
       /* first step: draw solid colored rectangle (use "cursor" character) */
@@ -367,7 +414,7 @@ void DrawTextToTextArea(int x, int y, char *text, int font_nr, int line_length,
 
 boolean RenderLineToBuffer(char **src_buffer_ptr, char *dst_buffer,
                           int *dst_buffer_len, boolean last_line_was_empty,
-                          int max_chars_per_line)
+                          int line_length)
 {
   char *text_ptr = *src_buffer_ptr;
   char *buffer = dst_buffer;
@@ -406,7 +453,7 @@ boolean RenderLineToBuffer(char **src_buffer_ptr, char *dst_buffer,
       if (buffer_len > 0 || !last_line_was_empty)
        buffer_filled = TRUE;
     }
-    else if (word_len < max_chars_per_line - buffer_len)
+    else if (word_len < line_length - buffer_len)
     {
       /* word fits into text buffer -- add word */
 
@@ -428,9 +475,9 @@ boolean RenderLineToBuffer(char **src_buffer_ptr, char *dst_buffer,
     {
       /* word does not fit at all into empty text buffer -- cut word */
 
-      strncpy(buffer, text_ptr, max_chars_per_line);
-      buffer[max_chars_per_line] = '\0';
-      text_ptr += max_chars_per_line;
+      strncpy(buffer, text_ptr, line_length);
+      buffer[line_length] = '\0';
+      text_ptr += line_length;
       buffer_filled = TRUE;
     }
 
@@ -464,3 +511,83 @@ void DrawTextWrapped(int x, int y, char *text, int font_nr, int line_length,
     current_line++;
   }
 }
+
+int DrawTextFromFile(int x, int y, char *filename, int font_nr,
+                    int line_length, int max_lines)
+{
+  int font_height = getFontHeight(font_nr);
+  char line[MAX_LINE_LEN];
+  char buffer[line_length + 1];
+  int buffer_len;
+  int current_line = 0;
+  FILE *file;
+
+  if (current_line >= max_lines)
+    return 0;
+
+  if (filename == NULL)
+    return 0;
+
+  if (!(file = fopen(filename, MODE_READ)))
+    return 0;
+
+  buffer[0] = '\0';
+  buffer_len = 0;
+
+  while (!feof(file) && current_line < max_lines)
+  {
+    char *line_ptr;
+    boolean last_line_was_empty = TRUE;
+
+    /* read next line of input file */
+    if (!fgets(line, MAX_LINE_LEN, file))
+      break;
+
+    /* skip comments (lines directly beginning with '#') */
+    if (line[0] == '#')
+      continue;
+
+    /* cut trailing newline from input line */
+    for (line_ptr = line; *line_ptr; line_ptr++)
+    {
+      if (*line_ptr == '\n' || *line_ptr == '\r')
+      {
+       *line_ptr = '\0';
+       break;
+      }
+    }
+
+    if (strlen(line) == 0)             /* special case: force empty line */
+      strcpy(line, "\n");
+
+    line_ptr = line;
+
+    while (*line_ptr && current_line < max_lines)
+    {
+      boolean buffer_filled = RenderLineToBuffer(&line_ptr,
+                                                buffer, &buffer_len,
+                                                last_line_was_empty,
+                                                line_length);
+      if (buffer_filled)
+      {
+       DrawText(x, y + current_line * font_height, buffer, font_nr);
+       current_line++;
+
+       last_line_was_empty = (buffer_len == 0);
+
+       buffer[0] = '\0';
+       buffer_len = 0;
+      }
+    }
+  }
+
+  fclose(file);
+
+  if (buffer_len > 0 && current_line < max_lines)
+  {
+    DrawText(x, y + current_line * font_height, buffer, font_nr);
+    current_line++;
+  }
+
+  return current_line;
+}