lbxgui: Use Cairo for drawing.

[liblbx.git] / src / gui / render.c

diff --git a/src/gui/render.c b/src/gui/render.c
index 8a1af81991f5c20d231ed5ec220e09eb4ec3fbbf..a96cc06a0b0e83f03b6f80ca944d6e48e70186f5 100644 (file)
--- a/src/gui/render.c
+++ b/src/gui/render.c
@@ -1,3 +1,23 @@
+/*
+ *  2ooM: The Master of Orion II Reverse Engineering Project
+ *  Routines for rendering LBX images to a GdkPixbuf.
+ *  Copyright (C) 2010 Nick Bowler
+ *
+ *  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
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
 #include <assert.h>
 #include <gtk/gtk.h>
 
@@ -9,6 +29,13 @@ struct lbx_colour palette_external[256];
 struct lbx_colour palette_internal[256];
 struct lbx_colour palette_override[256];
 
+static inline unsigned scale6to8(unsigned x)
+{
+       assert(x <= 0x3f);
+
+       return x*0xff / 0x3f;
+}
+
 static void get_colour(unsigned char index, unsigned char out[static 4])
 {
        struct lbx_colour *colour;
@@ -20,35 +47,33 @@ static void get_colour(unsigned char index, unsigned char out[static 4])
        else if (palette_external[index].active)
                colour = palette_external + index;
        else
-               colour = &(struct lbx_colour) { .red = 0xff, .blue = 0xff };
+               colour = &(struct lbx_colour) { .red = 0x3f, .blue = 0x3f };
 
-       out[0] = colour->red;
-       out[1] = colour->green;
-       out[2] = colour->blue;
+       out[0] = scale6to8(colour->red);
+       out[1] = scale6to8(colour->green);
+       out[2] = scale6to8(colour->blue);
        out[3] = -1; /* opaque */
 }
 
-int render_to_pixbuf(LBX_IMG *image, GdkPixbuf *pixbuf, unsigned frame)
+int render_to_pixbuf(struct lbx_image *image, GdkPixbuf *pixbuf, unsigned frame)
 {
        unsigned char **framedata, **framemask, *outbuf;
-       struct lbx_imginfo info;
        unsigned stride;
 
-       lbximg_getinfo(image, &info);
-       assert(info.width  == gdk_pixbuf_get_width(pixbuf));
-       assert(info.height == gdk_pixbuf_get_height(pixbuf));
+       assert(image->width  == gdk_pixbuf_get_width(pixbuf));
+       assert(image->height == gdk_pixbuf_get_height(pixbuf));
 
-       framedata = lbximg_getframe(image, frame);
+       framedata = lbx_img_getframe(image, frame);
        g_return_val_if_fail(framedata, -1);
-       framemask = lbximg_getmask(image);
+       framemask = lbx_img_getmask(image);
 
        outbuf = gdk_pixbuf_get_pixels(pixbuf);
        stride = gdk_pixbuf_get_rowstride(pixbuf);
 
-       for (unsigned i = 0; i < info.height; i++) {
+       for (unsigned i = 0; i < image->height; i++) {
                unsigned char (*px)[4] = (void *)(outbuf + i*stride);
 
-               for (unsigned j = 0; j < info.width; j++) {
+               for (unsigned j = 0; j < image->width; j++) {
                        if (framemask[i][j])
                                get_colour(framedata[i][j], px[j]);
                        else