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/* |
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* static char *rcsid_xutil_c = |
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* "$Id$"; |
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*/ |
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|
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/* |
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CrossFire, A Multiplayer game for X-windows |
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|
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Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
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Copyright (C) 1992 Frank Tore Johansen |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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|
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The authors can be reached via e-mail at crossfire-devel@real-time.com |
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*/ |
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|
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|
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#include <autoconf.h> |
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/* Stupid pngconf.h file has a check to see if _SETJMP_H is |
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* already defined, and if so, it generates a compilation error. |
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* I have no idea what they were thinking - wasn't the point of those |
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* defines so that you didn't need to worry about order or including |
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* the same file multiple times? |
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*/ |
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#ifdef HAVE_LIBPNG |
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#include "png.c" |
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#endif |
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|
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#include <Defines.h> |
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#include <funcpoint.h> |
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#include <loader.h> |
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|
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#define IMAGE_BUF 65536 |
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|
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/* |
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* ReadPixmaps(): When color pixmaps are used instead of fonts, this function |
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* does the actual reading of pixmap-file. This function is based largely on |
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* the ReadBitmaps function. |
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*/ |
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|
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/* New method: Pixmaps are stored as a montage on the disk (in several |
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* files). This way, we only need to call XCreatePixmap... a couple |
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* times, and the rest are XCopyArea. This is much faster, since |
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* the XPM library does not seem to be especially efficient about loading |
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* large numbers of pixmaps. |
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* |
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* Return true if we have gone to a private colormap. |
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* |
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* type is type of images to load. If Dm_Bitmaps, cmap, and masks |
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* can be null. |
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*/ |
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|
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/* Useful when trying to optimize load time some */ |
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#define IMAGE_TIME_LOAD |
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|
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int ReadImages(Display *gdisp, Pixmap **pixmaps, Pixmap **masks, |
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Colormap *cmap, enum DisplayMode type) { |
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|
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Window root = RootWindow (gdisp,DefaultScreen(gdisp)); |
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int use_private_cmap=0,num, compressed, len,i; |
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FILE *infile; |
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char *cp, databuf[IMAGE_BUF], filename[MAX_BUF]; |
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#ifdef IMAGE_TIME_LOAD |
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time_t start_time = time(NULL); |
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#endif |
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|
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/* This function is called before the game gc's are created. So |
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* we create one for our own use here. |
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*/ |
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GC gc= XCreateGC(gdisp, root, 0, NULL); |
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|
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if (!nrofpixmaps) |
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ReadBmapNames (); |
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|
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/* The processes that create a pixmap already allocates the space for |
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* the pixmap data. Therefor, only space for the pointers to that data |
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* needs to be allocated. The same might apply for the function |
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* that creates bitmaps below, but I am not as sure in that case. |
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* Mark Wedel |
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*/ |
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|
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*pixmaps = (Pixmap *) malloc(sizeof(Pixmap *) * nrofpixmaps); |
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if (type==Dm_Png) |
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*masks = (Pixmap *) malloc(sizeof(Pixmap *) * nrofpixmaps); |
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|
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for (i=0; i < nrofpixmaps; i++) |
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(*pixmaps)[i] = 0; |
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|
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LOG(llevDebug,"Building images..."); |
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|
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if (type==Dm_Png) { |
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sprintf(filename,"%s/crossfire.0",settings.datadir); |
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#ifdef HAVE_LIBPNG |
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init_pngx_loader(gdisp); |
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#endif |
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} |
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|
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if ((infile = open_and_uncompress(filename,0,&compressed))==NULL) { |
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LOG(llevError,"Unable to open %s\n", filename); |
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abort(); |
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} |
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i=0; |
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while (fgets(databuf,MAX_BUF,infile)) { |
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|
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/* First, verify that that image header line is OK */ |
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if(strncmp(databuf,"IMAGE ",6)!=0) { |
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LOG(llevError,"ReadImages:Bad image line - not IMAGE, instead\n%s",databuf); |
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abort(); |
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} |
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num = atoi(databuf+6); |
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if (num<0 || num > nrofpixmaps) { |
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LOG(llevError,"Pixmap number less than zero: %d, %s\n",num, databuf); |
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abort(); |
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} |
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/* Skip accross the number data */ |
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for (cp=databuf+6; *cp!=' '; cp++) ; |
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len = atoi(cp); |
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if (len==0 || len>IMAGE_BUF) { |
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LOG(llevError,"ReadImages: length not valid: %d\n%s", |
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len,databuf); |
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abort(); |
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} |
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if (fread(databuf, 1, len, infile)!=len) { |
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LOG(llevError,"read_client_images: Did not read desired amount of data, wanted %d\n%s", |
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len, databuf); |
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abort(); |
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} |
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i++; |
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if (!(i % 100)) LOG(llevDebug,"."); |
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|
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if (type==Dm_Png) { |
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#ifdef HAVE_LIBPNG |
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unsigned long x,y; |
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if (png_to_xpixmap(gdisp, root, databuf, len, |
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&(*pixmaps)[num], &(*masks)[num], cmap, &x, &y)) { |
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|
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LOG(llevError,"Error loading png file.\n"); |
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} |
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#endif |
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} |
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} |
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close_and_delete(infile, compressed); |
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XFreeGC(gdisp, gc); |
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|
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/* Check for any holes. There should not be. This is an interim check |
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* to use until the xbm_values is removed. The program that |
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* creates the bitmap/pixmap files just adds the bitmaps, so holes should |
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* not be in the image file. |
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*/ |
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for (i = 0; i < nrofpixmaps; i++) |
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if ((*pixmaps)[i] == 0) { |
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LOG(llevDebug, "Warning, pixmap %d is not defined, setting it to blank\n", i); |
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(*pixmaps)[i] = (*pixmaps)[blank_face->number]; |
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} |
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LOG(llevDebug,"done.\n"); |
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#ifdef IMAGE_TIME_LOAD |
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fprintf(stderr,"Creation of images took %ld seconds\n", time(NULL) - start_time); |
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#endif |
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return use_private_cmap; |
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} |
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|
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/* This frees all the pixmaps. This not only makes for better code, |
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* some XServers may not free the memory used by the pixmaps unless it is done |
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* this way. For color pixmaps, this will be called twice - the |
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* first time, the normal pixmaps will be passed through, the second |
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* time, it will be called with the masks as the pixmaps argument. |
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*/ |
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|
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void free_pixmaps(Display *gdisp, Pixmap *pixmaps) |
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{ |
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int i; |
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|
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for (i=0; i < nrofpixmaps; i++) { |
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if (pixmaps[i]!=0) { |
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XFreePixmap(gdisp, pixmaps[i]); |
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pixmaps[i] = 0; |
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} |
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} |
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} |
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|
