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/*
* Copyright (C) 2014 Neverball authors
*
* NEVERBALL 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 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.
*/
#include "theme.h"
#include "config.h"
#include "image.h"
#include "video.h"
/*---------------------------------------------------------------------------*/
static const char theme_images[THEME_IMAGES_MAX][PATHMAX] = {
"back-plain.png", /* off and inactive */
"back-plain-focus.png", /* off and active */
"back-hilite.png", /* on and inactive */
"back-hilite-focus.png" /* on and active */
};
static GLuint theme_image(const char *path)
{
const int W = video.device_w;
const int H = video.device_h;
int W2, H2;
int w, h, b;
void *p;
GLuint o = 0;
/*
* Disable mipmapping and do a manual downscale. Heuristic for
* downscaling the texture: assume target size to be roughly 1/16
* of a full screen texture, smallest size being 32x32.
*/
image_near2(&W2, &H2, W, H);
W2 = MAX(W2 / 16, 32);
H2 = MAX(H2 / 16, 32);
if ((p = image_load(path, &w, &h, &b)))
{
void *q;
/* Prefer a small scale factor. */
int s = MAX(w, h) / MAX(W2, H2);
if (s > 1 && (q = image_scale(p, w, h, b, &w, &h, s)))
{
free(p);
p = q;
}
o = make_texture(p, w, h, b, 0);
free(p);
p = NULL;
}
return o;
}
static const char *theme_path(const char *name, const char *file)
{
static char path[MAXSTR];
if ((name && *name) && (file && *file))
{
SAFECPY(path, "gui/");
SAFECAT(path, name);
SAFECAT(path, "/");
SAFECAT(path, file);
return path;
}
return "";
}
int theme_load(struct theme *theme, const char *name)
{
char buff[MAXSTR];
fs_file fp;
float s[4] = { 0.25f, 0.25f, 0.25f, 0.25f };
int i;
if (theme && name && *name)
{
memset(theme, 0, sizeof (*theme));
/* Load description. */
if ((fp = fs_open_read(theme_path(name, "theme.txt"))))
{
while ((fs_gets(buff, sizeof (buff), fp)))
{
strip_newline(buff);
if (strncmp(buff, "slice ", 6) == 0)
sscanf(buff + 6, "%f %f %f %f", &s[0], &s[1], &s[2], &s[3]);
}
fs_close(fp);
}
else
{
log_printf("Failure to open \"%s\" theme file\n", name);
}
theme->s[0] = 0.0f;
theme->s[1] = s[0];
theme->s[2] = (1.0f - s[1]);
theme->s[3] = 1.0f;
theme->t[0] = 1.0f;
theme->t[1] = (1.0f - s[2]);
theme->t[2] = s[3];
theme->t[3] = 0.0f;
/* Load textures. */
for (i = 0; i < ARRAYSIZE(theme_images); i++)
theme->tex[i] = theme_image(theme_path(name, theme_images[i]));
return 1;
}
return 0;
}
void theme_free(struct theme *theme)
{
int i;
if (theme)
{
glDeleteTextures(THEME_IMAGES_MAX, theme->tex);
for (i = 0; i < THEME_IMAGES_MAX; i++)
theme->tex[i] = 0;
}
}
/*---------------------------------------------------------------------------*/
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