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New Xor magic tool by Łukasz Dmitrowski.

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Pere Pujal i Carabantes 2013-04-09 22:40:27 +00:00
parent 01556f1522
commit 0ab5f8e321
3 changed files with 211 additions and 0 deletions
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/*
xor.c
Draws pixels which color depends on previous hue value
(in HSV model) and coordinates
Tux Paint - A simple drawing program for children.
Copyright (c) 2002-2008 by Bill Kendrick and others; see AUTHORS.txt
bill@newbreedsoftware.com
http://www.tuxpaint.org/
Copyright (c) 2013 by Lukasz Dmitrowski
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
(See COPYING.txt)
*/
#include <stdio.h>
#include <string.h>
#include "tp_magic_api.h"
#include "SDL_image.h"
#include "SDL_mixer.h"
static Mix_Chunk * xor_snd;
Uint32 xor_api_version(void);
int xor_init(magic_api * api);
int xor_get_tool_count(magic_api * api);
SDL_Surface * xor_get_icon(magic_api * api, int which);
char * xor_get_name(magic_api * api, int which);
char * xor_get_description(magic_api * api, int which, int mode);
void xor_drag(magic_api * api, int which, SDL_Surface * canvas,
SDL_Surface * last, int ox, int oy, int x, int y,
SDL_Rect * update_rect);
void xor_click(magic_api * api, int which, int mode,
SDL_Surface * canvas, SDL_Surface * last,
int x, int y, SDL_Rect * update_rect);
void xor_release(magic_api * api, int which,
SDL_Surface * canvas, SDL_Surface * last,
int x, int y, SDL_Rect * update_rect);
void xor_shutdown(magic_api * api);
void xor_set_color(magic_api * api, Uint8 r, Uint8 g, Uint8 b);
int xor_requires_colors(magic_api * api, int which);
void xor_switchin(magic_api * api, int which, int mode, SDL_Surface * canvas);
void xor_switchout(magic_api * api, int which, int mode, SDL_Surface * canvas);
int xor_modes(magic_api * api, int which);
Uint32 xor_api_version(void) { return(TP_MAGIC_API_VERSION); }
int xor_init(magic_api * api)
{
char fname[1024];
snprintf(fname, sizeof(fname), "%s/sounds/magic/xor.ogg",
api->data_directory);
xor_snd = Mix_LoadWAV(fname);
return(1);
}
int xor_get_tool_count(magic_api * api ATTRIBUTE_UNUSED)
{
return(1);
}
SDL_Surface * xor_get_icon(magic_api * api, int which ATTRIBUTE_UNUSED)
{
char fname[1024];
snprintf(fname, sizeof(fname), "%s/images/magic/xor.png",
api->data_directory);
return(IMG_Load(fname));
}
char * xor_get_name(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
{
return(strdup(gettext_noop("Xor Colors")));
}
char * xor_get_description(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode)
{
if (mode == MODE_PAINT)
return(strdup(gettext_noop("Click and drag to draw a XOR effect")));
else
return(strdup(gettext_noop("Click to draw a XOR effect on the whole picture")));
}
static void do_xor(void * ptr, int which ATTRIBUTE_UNUSED,
SDL_Surface * canvas, SDL_Surface * last ATTRIBUTE_UNUSED, int x, int y)
{
magic_api * api = (magic_api *) ptr;
Uint8 r,g,b,xor;
float hue,sat,val;
Uint32 pixel;
SDL_GetRGB(api->getpixel(canvas,x,y),canvas->format,&r,&g,&b);
api->rgbtohsv(r,g,b,&hue,&sat,&val);
if (sat == 0) xor = (2*(int)hue+(x^y))%360;
else xor = ((int)hue+(x^y))%360;
api->hsvtorgb(xor,1,1,&r,&g,&b);
pixel = SDL_MapRGB(canvas->format,r,g,b);
api->putpixel(canvas,x,y,pixel);
}
static void do_xor_circle(void * ptr, int which ATTRIBUTE_UNUSED,
SDL_Surface * canvas, SDL_Surface * last ATTRIBUTE_UNUSED, int x, int y)
{
magic_api * api = (magic_api *) ptr;
int xx,yy;
for (yy = -16; yy < 16; yy++)
{
for (xx = -16; xx < 16; xx++)
{
if (api->in_circle(xx, yy, 16))
{
if (!api->touched(xx+x,yy+y)) do_xor(api,which,canvas,last,x + xx,y + yy);
}
}
}
}
void xor_drag(magic_api * api, int which, SDL_Surface * canvas,
SDL_Surface * last ATTRIBUTE_UNUSED, int ox, int oy, int x, int y,
SDL_Rect * update_rect)
{
api->line((void *) api, which, canvas, last, ox, oy, x, y, 1, do_xor_circle);
if (ox > x) { int tmp = ox; ox = x; x = tmp; }
if (oy > y) { int tmp = oy; oy = y; y = tmp; }
update_rect->x = ox - 16;
update_rect->y = oy - 16;
update_rect->w = (x + 16) - update_rect->x;
update_rect->h = (y + 16) - update_rect->h;
api->playsound(xor_snd,(x * 255) / canvas->w, 255);
}
void xor_click(magic_api * api, int which, int mode,
SDL_Surface * canvas, SDL_Surface * last ATTRIBUTE_UNUSED,
int x, int y, SDL_Rect * update_rect)
{
if (mode == MODE_PAINT)
xor_drag(api, which, canvas, last, x, y, x, y, update_rect);
else
{
int xx, yy;
for (yy = 0; yy < canvas->h; yy++)
for (xx = 0; xx < canvas->w; xx++)
do_xor(api, which, canvas, last, xx, yy);
update_rect->x = 0;
update_rect->y = 0;
update_rect->w = canvas->w;
update_rect->h = canvas->h;
api->playsound(xor_snd,(x * 255) / canvas->w, 255);
}
}
void xor_release(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED,
SDL_Surface * canvas ATTRIBUTE_UNUSED, SDL_Surface * last ATTRIBUTE_UNUSED,
int x ATTRIBUTE_UNUSED, int y ATTRIBUTE_UNUSED, SDL_Rect * update_rect ATTRIBUTE_UNUSED)
{
}
void xor_shutdown(magic_api * api ATTRIBUTE_UNUSED)
{
if (xor_snd != NULL)
Mix_FreeChunk(xor_snd);
}
void xor_set_color(magic_api * api ATTRIBUTE_UNUSED, Uint8 r ATTRIBUTE_UNUSED, Uint8 g ATTRIBUTE_UNUSED, Uint8 b ATTRIBUTE_UNUSED)
{
}
int xor_requires_colors(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
{
return 0;
}
void xor_switchin(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED, SDL_Surface * canvas ATTRIBUTE_UNUSED)
{
}
void xor_switchout(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED, SDL_Surface * canvas ATTRIBUTE_UNUSED)
{
}
int xor_modes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
{
return(MODE_PAINT | MODE_FULLSCREEN);
}