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/*
* Copyright (C) 2001 by Holger Rapp
*
* 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 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "graphic.h"
namespace Graph {
/** Pic::Pic(const Pic& p)
*
* Copy constructor. Slow and simple
*
* Args: p pic to copy
* Returns: Nothing
*/
Pic::Pic(const Pic& p) {
*this=p;
}
/** Pic& Pic::operator=(const Pic& p)
*
* Copy operator. Simple and slow. Don't use often
*
* Args: p pic to copy
* returns: *this
*/
Pic& Pic::operator=(const Pic& p) {
clrkey=p.clrkey;
sh_clrkey=p.sh_clrkey;
lpix=0;
bhas_clrkey=p.bhas_clrkey;
set_size(p.w, p.h);
memcpy(pixels, p.pixels, sizeof(short)*w*h);
return *this;
}
/** void Pic::set_size(const unsigned short nw, const unsigned short nh)
*
* This functions sets the new size of a pic
*
* Args: nw = new width
* nh = new height
* Returns: nothinh
*/
void Pic::set_size(const unsigned short nw, const unsigned short nh) {
if(pixels) free(pixels);
w=nw;
h=nh;
// We make sure, that everything pic is aligned to 4bytes, so that clearing can
// goes fast with dwords
if(w & 1) w++; // %2
if(h & 1) h++; // %2
if(!w) w=2;
if(!h) h=2;
pixels=(unsigned short*) malloc(sizeof(short)*w*h);
w=nw;
h=nh;
clear_all();
}
/** void Pic::clear_all(void)
*
* This function clear all the pixels and sets them to the clrkey, if defined
*
* Args: none
* Returns: nothing
*/
void Pic::clear_all(void) {
if(!clrkey) return;
for(unsigned int i=(w*h-2); i; i-=2) {
pixels[i]=clrkey;
}
}
/** int Pic::load(const char* file)
*
* This function loads a bitmap from a file using the SDL functions
*
* Args: file Path to pic
* Returns: RET_OK or ERR_FAILED
*/
int Pic::load(const char* file) {
if(!file) return ERR_FAILED;
SDL_Surface* bmp=NULL;
int x=0;
int y=0;
unsigned char* bits, R, G, B;
bmp=SDL_LoadBMP(file);
if(bmp == NULL) { return ERR_FAILED; }
set_size(bmp->w, bmp->h);
for(y=0; y<h; y++) {
for(x=0; x<w; x++) {
bits=((Uint8*)bmp->pixels)+y*bmp->pitch+x*bmp->format->BytesPerPixel;
R= (Uint8) *((bits)+bmp->format->Rshift/8);
G= (Uint8) *((bits)+bmp->format->Gshift/8);
B= (Uint8) *((bits)+bmp->format->Bshift/8);
set_pixel(x, y, R, G, B);
}
}
SDL_FreeSurface(bmp);
return RET_OK;
}
/** void Pic::set_clrkey(unsigned short dclrkey)
*
* sets the clrkey of this pic
*
* Args: dclrkey The clrkey to use
* Returns: nothing
*/
void Pic::set_clrkey(unsigned short dclrkey) {
sh_clrkey=dclrkey;
clrkey= (dclrkey<<16 | dclrkey);
bhas_clrkey=true;
}
/** void Pic::set_clrkey(unsigned char r, unsigned char g, unsigned char b)
*
* sets the clrkey of this pic
*
* Args: r red value of clrkey
* g green value of clrkey
* b blue value of clrkey
* Returns: nothing
*/
void Pic::set_clrkey(unsigned char r, unsigned char g, unsigned char b) {
unsigned short dclrkey=pack_rgb(r,g,b);
sh_clrkey=dclrkey;
clrkey= (dclrkey<<16 & clrkey);
bhas_clrkey=true;
}
}
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