OpenTTD-patches/os/macosx/splash.c
truelight 7abad2b20e (svn r5946) -Add: merged the TGP branch to mainline. TGP adds:
- New optional landscape generator (TerraGenesis Perlin)
  - Load heightmaps (either BMP or PNG)
  - Progress dialog while generating worlds (no longer a 'hanging' screen)
  - New dialogs for NewGame, Create Scenario and Play Heightmap
    - Easier to configure your landscape
    - More things to configure (tree-placer, ..)
  - Speedup of world generation
  - New console command 'restart': restart the map EXACTLY as it was when you
      first started it (needs a game made after or with this commit)
  - New console command 'getseed': get the seed of your map and share it with
      others (of course only works with generated maps)
  - Many new, world generation related, things
  - Many internal cleanups and rewrites
  Many tnx to those people who helped making this:
     Belugas, DaleStan, glx, KUDr, RichK67, Rubidium, and TrueLight (alfabetic)
  Many tnx to those who helped testing:
     Arnau, Bjarni, and tokai (alfabetic)
  And to all other people who helped testing and sending comments / bugs
  Stats: 673 lines changed, 3534 new lines, 79 new strings
2006-08-19 10:00:30 +00:00

145 lines
3.3 KiB
C

/* $Id$ */
#include "../../stdafx.h"
#include "../../openttd.h"
#include "../../variables.h"
#include "../../macros.h"
#include "../../debug.h"
#include "../../functions.h"
#include "../../gfx.h"
#include "../../fileio.h"
#include "splash.h"
#ifdef WITH_PNG
#include <png.h>
static void PNGAPI png_my_error(png_structp png_ptr, png_const_charp message)
{
DEBUG(misc, 0) ("ERROR(libpng): %s - %s", message, (char *)png_get_error_ptr(png_ptr));
longjmp(png_ptr->jmpbuf, 1);
}
static void PNGAPI png_my_warning(png_structp png_ptr, png_const_charp message)
{
DEBUG(misc, 0) ("WARNING(libpng): %s - %s", message, (char *)png_get_error_ptr(png_ptr));
}
void DisplaySplashImage(void)
{
png_byte header[8];
FILE *f;
png_structp png_ptr;
png_infop info_ptr, end_info;
uint width, height, bit_depth, color_type;
png_colorp palette;
int num_palette;
png_bytep *row_pointers;
uint8 *src, *dst;
uint y;
uint xoff, yoff;
int i;
f = FioFOpenFile(SPLASH_IMAGE_FILE);
if (f == NULL) return;
fread(header, 1, 8, f);
if (png_sig_cmp(header, 0, 8) != 0) {
fclose(f);
return;
}
png_ptr = png_create_read_struct (PNG_LIBPNG_VER_STRING, (png_voidp) NULL, png_my_error, png_my_warning);
if (png_ptr == NULL) {
fclose(f);
return;
}
info_ptr = png_create_info_struct(png_ptr);
if (info_ptr == NULL) {
png_destroy_read_struct(&png_ptr, (png_infopp)NULL, (png_infopp)NULL);
fclose(f);
return;
}
end_info = png_create_info_struct(png_ptr);
if (end_info == NULL) {
png_destroy_read_struct(&png_ptr, &info_ptr, (png_infopp)NULL);
fclose(f);
return;
}
if (setjmp(png_jmpbuf(png_ptr))) {
png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
fclose(f);
return;
}
png_init_io(png_ptr, f);
png_set_sig_bytes(png_ptr, 8);
png_read_png(png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, NULL);
width = png_get_image_width(png_ptr, info_ptr);
height = png_get_image_height(png_ptr, info_ptr);
bit_depth = png_get_bit_depth(png_ptr, info_ptr);
color_type = png_get_color_type(png_ptr, info_ptr);
if (color_type != PNG_COLOR_TYPE_PALETTE || bit_depth != 8) {
png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
fclose(f);
return;
}
if (!png_get_valid(png_ptr, info_ptr, PNG_INFO_PLTE)) {
png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
fclose(f);
return;
}
png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette);
row_pointers = png_get_rows(png_ptr, info_ptr);
memset(_screen.dst_ptr, 0xff, _screen.pitch * _screen.height);
if (width > (uint) _screen.width) width = _screen.width;
if (height > (uint) _screen.height) height = _screen.height;
xoff = (_screen.width - width) / 2;
yoff = (_screen.height - height) / 2;
for (y = 0; y < height; y++) {
src = row_pointers[y];
dst = ((uint8 *) _screen.dst_ptr) + (yoff + y) * _screen.pitch + xoff;
memcpy(dst, src, width);
}
for (i = 0; i < num_palette; i++) {
_cur_palette[i].r = palette[i].red;
_cur_palette[i].g = palette[i].green;
_cur_palette[i].b = palette[i].blue;
}
_cur_palette[0xff].r = 0;
_cur_palette[0xff].g = 0;
_cur_palette[0xff].b = 0;
_pal_first_dirty = 0;
_pal_last_dirty = 0xff;
png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
fclose(f);
return;
}
#else /* WITH_PNG */
void DisplaySplashImage(void) {}
#endif /* WITH_PNG */