221 lines
6.6 KiB
C
221 lines
6.6 KiB
C
/*
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waves.c
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Credits: Bill Kendrick <bill@newbreedsoftware.com> (idea & Waves tool), Adam Rakowski <foo-script@o2.pl> (Wavelets tool)
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Waves Magic Tool Plugin
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Tux Paint - A simple drawing program for children.
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Copyright (c) 2002-2008 by Bill Kendrick and others; see AUTHORS.txt
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bill@newbreedsoftware.com
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http://www.tuxpaint.org/
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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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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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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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(See COPYING.txt)
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*/
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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#include "tp_magic_api.h"
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#include "SDL_image.h"
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#include "SDL_mixer.h"
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/* Our globals: */
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static Mix_Chunk * waves_snd[2];
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/* Local function prototypes: */
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Uint32 waves_api_version(void);
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int waves_init(magic_api * api);
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int waves_get_tool_count(magic_api * api);
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SDL_Surface * waves_get_icon(magic_api * api, int which);
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char * waves_get_name(magic_api * api, int which);
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char * waves_get_description(magic_api * api, int which, int mode);
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void waves_drag(magic_api * api, int which, SDL_Surface * canvas,
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SDL_Surface * last, int ox, int oy, int x, int y,
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SDL_Rect * update_rect);
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void waves_click(magic_api * api, int which, int mode,
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SDL_Surface * canvas, SDL_Surface * last,
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int x, int y, SDL_Rect * update_rect);
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void waves_release(magic_api * api, int which,
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SDL_Surface * canvas, SDL_Surface * last,
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int x, int y, SDL_Rect * update_rect);
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void waves_shutdown(magic_api * api);
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void waves_set_color(magic_api * api, Uint8 r, Uint8 g, Uint8 b);
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int waves_requires_colors(magic_api * api, int which);
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void waves_switchin(magic_api * api, int which, int mode, SDL_Surface * canvas);
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void waves_switchout(magic_api * api, int which, int mode, SDL_Surface * canvas);
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int waves_modes(magic_api * api, int which);
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Uint32 waves_api_version(void) { return(TP_MAGIC_API_VERSION); }
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// No setup required:
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int waves_init(magic_api * api)
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{
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char fname[1024];
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snprintf(fname, sizeof(fname), "%s/sounds/magic/waves.ogg",
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api->data_directory);
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waves_snd[0] = Mix_LoadWAV(fname);
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snprintf(fname, sizeof(fname), "%s/sounds/magic/wavelet.ogg",
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api->data_directory);
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waves_snd[1] = Mix_LoadWAV(fname);
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return(1);
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}
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// We have multiple tools:
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int waves_get_tool_count(magic_api * api ATTRIBUTE_UNUSED)
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{
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return 2;
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}
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// Load our icons:
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SDL_Surface * waves_get_icon(magic_api * api, int which)
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{
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char fname[1024];
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if (!which) snprintf(fname, sizeof(fname), "%s/images/magic/waves.png", api->data_directory);
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else snprintf(fname, sizeof(fname), "%s/images/magic/wavelet.png", api->data_directory);
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return(IMG_Load(fname));
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}
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// Return our names, localized:
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char * waves_get_name(magic_api * api ATTRIBUTE_UNUSED, int which)
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{
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if (!which) return(strdup(gettext_noop("Waves")));
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else return strdup(gettext_noop("Wavelets"));
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}
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// Return our descriptions, localized:
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char * waves_get_description(magic_api * api ATTRIBUTE_UNUSED, int which, int mode ATTRIBUTE_UNUSED)
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{
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if (!which)
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return(strdup(gettext_noop("Click to make the picture horizontally wavy. Click toward the top for shorter waves, the bottom for taller waves, the left for small waves, and the right for long waves.")));
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return strdup(gettext_noop("Click to make the picture vertically wavy. Click toward the top for shorter waves, the bottom for taller waves, the left for small waves, and the right for long waves."));
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}
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void waves_drag(magic_api * api ATTRIBUTE_UNUSED, int which, SDL_Surface * canvas,
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SDL_Surface * last, int ox ATTRIBUTE_UNUSED, int oy ATTRIBUTE_UNUSED, int x, int y,
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SDL_Rect * update_rect)
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{
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int xx, yy;
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SDL_Rect src, dest;
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int width;
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int height;
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SDL_BlitSurface(last, NULL, canvas, NULL);
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if (which==0)
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{
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//waves effect
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width = ((x * 10) / canvas->w) + 10;
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height = ((canvas->h - y) / 10) + 1;
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for (yy = 0; yy < canvas->h; yy++)
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{
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xx = sin((yy * height) * M_PI / 180.0) * width;
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src.x = 0;
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src.y = yy;
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src.w = canvas->w;
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src.h = 1;
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dest.x = xx;
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dest.y = yy;
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SDL_BlitSurface(last, &src, canvas, &dest);
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}
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}
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else
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{
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width = ((x * 10) / canvas->w) + 10;
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height = ((canvas->h - y) / 10) + 1;
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for (xx = 0; xx < canvas->w; xx++)
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{
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yy = sin((xx * height) * M_PI / 180.0) * width;
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src.x = xx;
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src.y = 0;
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src.w = 1;
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src.h = canvas->h;
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dest.x = xx;
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dest.y = yy;
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SDL_BlitSurface(last, &src, canvas, &dest);
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}
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}
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update_rect->x = 0;
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update_rect->y = 0;
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update_rect->w = canvas->w;
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update_rect->h = canvas->h;
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}
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// Affect the canvas on click:
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void waves_click(magic_api * api, int which, int mode ATTRIBUTE_UNUSED,
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SDL_Surface * canvas, SDL_Surface * last,
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int x, int y, SDL_Rect * update_rect)
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{
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waves_drag(api, which, canvas, last, x, y, x, y, update_rect);
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api->playsound(waves_snd[which], 128, 255);
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}
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// Affect the canvas on release:
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void waves_release(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED,
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SDL_Surface * canvas ATTRIBUTE_UNUSED, SDL_Surface * last ATTRIBUTE_UNUSED,
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int x ATTRIBUTE_UNUSED, int y ATTRIBUTE_UNUSED, SDL_Rect * update_rect ATTRIBUTE_UNUSED)
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{
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}
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// No setup happened:
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void waves_shutdown(magic_api * api ATTRIBUTE_UNUSED)
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{
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if (waves_snd[0] != NULL)
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Mix_FreeChunk(waves_snd[0]);
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if (waves_snd[1] != NULL)
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Mix_FreeChunk(waves_snd[1]);
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}
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// Record the color from Tux Paint:
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void waves_set_color(magic_api * api ATTRIBUTE_UNUSED, Uint8 r ATTRIBUTE_UNUSED, Uint8 g ATTRIBUTE_UNUSED, Uint8 b ATTRIBUTE_UNUSED)
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{
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}
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// Use colors:
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int waves_requires_colors(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
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{
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return 0;
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}
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void waves_switchin(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED, SDL_Surface * canvas ATTRIBUTE_UNUSED)
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{
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}
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void waves_switchout(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED, SDL_Surface * canvas ATTRIBUTE_UNUSED)
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{
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}
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int waves_modes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
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{
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return(MODE_PAINT);
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}
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