* Implemented TGA image export.

cucul/Makefile.am

@@ -33,6 +33,7 @@ libcucul_la_SOURCES = \
 	export_html.c \
 	export_ps.c \
 	export_svg.c \
+	export_bitmap.c \
 	$(NULL)
 libcucul_la_LDFLAGS = -no-undefined
 libcucul_la_LIBADD = @CUCUL_LIBS@

cucul/cucul.c

@@ -256,7 +256,9 @@ void cucul_free(cucul_t *qq)
  *
  *  \li \e "ps": export a PostScript document.
  *
- *  \li \e "svg": export an SVG document.
+ *  \li \e "svg": export an SVG vector image.
+ *
+ *  \li \e "tga": export a TGA image.
  *
  *  \param qq A libcucul canvas
  *  \param format A string describing the requested output format.
@@ -266,6 +268,8 @@ cucul_buffer_t * cucul_create_export(cucul_t *qq, char const *format)
     cucul_buffer_t *ex;
 
     ex = malloc(sizeof(cucul_buffer_t));
+    ex->size = 0;
+    ex->data = NULL;
 
     if(!strcasecmp("ansi", format))
         _cucul_get_ansi(qq, ex);
@@ -279,7 +283,10 @@ cucul_buffer_t * cucul_create_export(cucul_t *qq, char const *format)
         _cucul_get_ps(qq, ex);
     else if(!strcasecmp("svg", format))
         _cucul_get_svg(qq, ex);
-    else
+    else if(!strcasecmp("tga", format))
+        _cucul_get_tga(qq, ex);
+
+    if(ex->size == 0)
     {
         free(ex);
         return NULL;
@@ -304,9 +311,10 @@ char const * const * cucul_get_export_list(void)
         "ansi", "ANSI",
         "html", "HTML",
         "html3", "backwards-compatible HTML",
-        "irc", "IRC (mIRC colours)",
-        "ps", "PostScript",
-        "svg", "SVG",
+        "irc", "IRC with mIRC colours",
+        "ps", "PostScript document",
+        "svg", "SVG vector image",
+        "tga", "TGA image",
         NULL, NULL
     };
 

cucul/cucul_internals.h

@@ -78,5 +78,6 @@ extern void _cucul_get_html3(cucul_t *, cucul_buffer_t *);
 extern void _cucul_get_irc(cucul_t *, cucul_buffer_t *);
 extern void _cucul_get_ps(cucul_t *, cucul_buffer_t *);
 extern void _cucul_get_svg(cucul_t *, cucul_buffer_t *);
+extern void _cucul_get_tga(cucul_t *, cucul_buffer_t *);
 
 #endif /* __CUCUL_INTERNALS_H__ */

cucul/export_bitmap.c

@@ -0,0 +1,83 @@
+/*
+ *  libcucul      Canvas for ultrafast compositing of Unicode letters
+ *  Copyright (c) 2002-2006 Sam Hocevar <sam@zoy.org>
+ *                All Rights Reserved
+ *
+ *  $Id$
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the Do What The Fuck You Want To
+ *  Public License, Version 2, as published by Sam Hocevar. See
+ *  http://sam.zoy.org/wtfpl/COPYING for more details.
+ */
+
+/*
+ *  This file contains export functions for bitmap formats
+ */
+
+#include "config.h"
+
+#if !defined(__KERNEL__)
+#   include <stdlib.h>
+#   include <stdio.h>
+#   include <string.h>
+#endif
+
+#include "cucul.h"
+#include "cucul_internals.h"
+
+void _cucul_get_tga(cucul_t *qq, cucul_buffer_t *ex)
+{
+    char const * const * fonts;
+    char * cur;
+    cucul_font_t *f;
+    unsigned int i, w, h;
+
+    fonts = cucul_get_font_list();
+    if(!fonts[0])
+        return;
+
+    f = cucul_load_font(fonts[0], 0);
+
+    w = cucul_get_width(qq) * cucul_get_font_width(f);
+    h = cucul_get_height(qq) * cucul_get_font_height(f);
+
+    ex->size = w * h * 4 + 18;
+    ex->data = malloc(ex->size);
+
+    cur = ex->data;
+
+    /* ID Length */
+    cur += sprintf(cur, "%c", 0);
+    /* Color Map Type: no colormap */
+    cur += sprintf(cur, "%c", 0);
+    /* Image Type: uncompressed truecolor */
+    cur += sprintf(cur, "%c", 2);
+    /* Color Map Specification: no color map */
+    memset(cur, 0, 5); cur += 5;
+
+    /* Image Specification */
+    cur += sprintf(cur, "%c%c", 0, 0); /* X Origin */
+    cur += sprintf(cur, "%c%c", 0, 0); /* Y Origin */
+    cur += sprintf(cur, "%c%c", w & 0xff, w >> 8); /* Width */
+    cur += sprintf(cur, "%c%c", h & 0xff, h >> 8); /* Height */
+    cur += sprintf(cur, "%c", 32); /* Pixel Depth */
+    cur += sprintf(cur, "%c", 40); /* Image Descriptor */
+
+    /* Image ID: no ID */
+    /* Color Map Data: no colormap */
+
+    /* Image Data */
+    cucul_render_canvas(qq, f, cur, w, h, 4 * w);
+
+    /* Swap bytes. What a waste of time. */
+    for(i = 0; i < w * h * 4; i += 4)
+    {
+        char w;
+        w = cur[i]; cur[i] = cur[i + 3]; cur[i + 3] = w;
+        w = cur[i + 1]; cur[i + 1] = cur[i + 2]; cur[i + 2] = w;
+    }
+
+    cucul_free_font(f);
+}
+