f836cc775a
Thoose changes were already in the SDL2 and android versions, they were reverted somehow...
342 lines
9.6 KiB
C
342 lines
9.6 KiB
C
/*
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tint.c
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Tint, Convert the image into differant shades of a user specified colour.
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Seperate Colours, Convert the image into white and the user specified colour.
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This does not use differant shades of the user colour like tint does.
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Tux Paint - A simple drawing program for children.
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Credits: Andrew Corcoran <akanewbie@gmail.com>
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Copyright (c) 2002-2009 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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Last updated: May 6, 2009
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$Id$
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*/
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#include <stdio.h>
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#include <string.h>
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#include <libintl.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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#include <math.h>
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#include <limits.h>
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#ifndef gettext_noop
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#define gettext_noop(String) String
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#endif
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enum
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{
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TOOL_TINT,
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TOOL_THRESHOLD,
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tint_NUM_TOOLS
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};
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static Uint8 tint_r, tint_g, tint_b;
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static int tint_min = INT_MAX;
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static int tint_max = 0;
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static const int tint_RADIUS = 16;
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static Mix_Chunk *tint_snd_effect[tint_NUM_TOOLS];
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const char *tint_snd_filenames[tint_NUM_TOOLS] = {
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"tint.wav",
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"fold.ogg" /* FIXME */
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};
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const char *tint_icon_filenames[tint_NUM_TOOLS] = {
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"tint.png",
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"colornwhite.png"
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};
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const char *tint_names[tint_NUM_TOOLS] = {
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gettext_noop("Tint"),
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gettext_noop("Color & White") // It does more than this but more intuitive than threshold.
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};
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const char *tint_descs[tint_NUM_TOOLS][2] = {
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{gettext_noop("Click and drag the mouse around to change the color of parts of your picture."),
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gettext_noop("Click to change the color of your entire picture."),},
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{gettext_noop("Click and drag the mouse around to turn parts of your picture into white and a color you choose."),
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gettext_noop("Click to turn your entire picture into white and a color you choose.")}
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};
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int tint_init(magic_api * api);
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Uint32 tint_api_version(void);
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int tint_get_tool_count(magic_api * api);
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SDL_Surface *tint_get_icon(magic_api * api, int which);
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char *tint_get_name(magic_api * api, int which);
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char *tint_get_description(magic_api * api, int which, int mode);
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static int tint_grey(Uint8 r1, Uint8 g1, Uint8 b1);
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static void do_tint_pixel(void *ptr, int which, SDL_Surface * canvas, SDL_Surface * last, int x, int y);
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static void do_tint_full(void *ptr, SDL_Surface * canvas, SDL_Surface * last, int which);
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static void do_tint_brush(void *ptr, int which, SDL_Surface * canvas, SDL_Surface * last, int x, int y);
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void tint_drag(magic_api * api, int which, SDL_Surface * canvas,
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SDL_Surface * last, int ox, int oy, int x, int y, SDL_Rect * update_rect);
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void tint_click(magic_api * api, int which, int mode,
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SDL_Surface * canvas, SDL_Surface * last, int x, int y, SDL_Rect * update_rect);
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void tint_release(magic_api * api, int which,
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SDL_Surface * canvas, SDL_Surface * last, int x, int y, SDL_Rect * update_rect);
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void tint_shutdown(magic_api * api);
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void tint_set_color(magic_api * api, Uint8 r, Uint8 g, Uint8 b);
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int tint_requires_colors(magic_api * api, int which);
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void tint_switchin(magic_api * api, int which, int mode, SDL_Surface * canvas);
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void tint_switchout(magic_api * api, int which, int mode, SDL_Surface * canvas);
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int tint_modes(magic_api * api, int which);
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Uint32 tint_api_version(void)
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{
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return (TP_MAGIC_API_VERSION);
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}
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//Load sounds
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int tint_init(magic_api * api)
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{
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int i;
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char fname[1024];
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for (i = 0; i < tint_NUM_TOOLS; i++)
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{
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snprintf(fname, sizeof(fname), "%ssounds/magic/%s", api->data_directory, tint_snd_filenames[i]);
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tint_snd_effect[i] = Mix_LoadWAV(fname);
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}
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return (1);
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}
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int tint_get_tool_count(magic_api * api ATTRIBUTE_UNUSED)
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{
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return (tint_NUM_TOOLS);
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}
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// Load our icons:
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SDL_Surface *tint_get_icon(magic_api * api, int which)
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{
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char fname[1024];
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snprintf(fname, sizeof(fname), "%simages/magic/%s", api->data_directory, tint_icon_filenames[which]);
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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 *tint_get_name(magic_api * api ATTRIBUTE_UNUSED, int which)
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{
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return (strdup(gettext_noop(tint_names[which])));
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}
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// Return our descriptions, localized:
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char *tint_get_description(magic_api * api ATTRIBUTE_UNUSED, int which, int mode)
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{
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return (strdup(gettext_noop(tint_descs[which][mode - 1])));
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}
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//Calculates the grey scale value for a rgb pixel
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static int tint_grey(Uint8 r1, Uint8 g1, Uint8 b1)
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{
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return 0.3 * r1 + .59 * g1 + 0.11 * b1;
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}
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static void do_tint_pixel(void *ptr, int which, SDL_Surface * canvas, SDL_Surface * last, int x, int y)
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{
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magic_api *api = (magic_api *) ptr;
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Uint8 r, g, b;
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float h, s, v;
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SDL_GetRGB(api->getpixel(last, x, y), last->format, &r, &g, &b);
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{
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int greyValue = tint_grey(r, g, b);
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if (which == TOOL_TINT)
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{
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api->rgbtohsv(tint_r, tint_g, tint_b, &h, &s, &v);
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api->hsvtorgb(h, s, greyValue / 255.0, &r, &g, &b);
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api->putpixel(canvas, x, y, SDL_MapRGB(canvas->format, r, g, b));
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}
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else if (which == TOOL_THRESHOLD)
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{
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int thresholdValue = (tint_max - tint_min) / 2;
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if (greyValue < thresholdValue)
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{
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api->putpixel(canvas, x, y, SDL_MapRGB(canvas->format, tint_r, tint_g, tint_b));
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}
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else
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{
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api->putpixel(canvas, x, y, SDL_MapRGB(canvas->format, 255, 255, 255));
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}
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}
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}
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}
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// Do the effect:
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static void do_tint_full(void *ptr, SDL_Surface * canvas, SDL_Surface * last, int which)
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{
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int x, y;
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for (y = 0; y < last->h; y++)
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{
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for (x = 0; x < last->w; x++)
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{
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do_tint_pixel(ptr, which, canvas, last, x, y);
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}
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}
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}
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static void do_tint_brush(void *ptr, int which, SDL_Surface * canvas, SDL_Surface * last, int x, int y)
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{
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int xx, yy;
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magic_api *api = (magic_api *) ptr;
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for (yy = y - tint_RADIUS; yy < y + tint_RADIUS; yy++)
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{
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for (xx = x - tint_RADIUS; xx < x + tint_RADIUS; xx++)
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{
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if (api->in_circle(xx - x, yy - y, tint_RADIUS) && !api->touched(xx, yy))
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{
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do_tint_pixel(api, which, canvas, last, xx, yy);
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}
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}
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}
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}
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// Affect the canvas on drag:
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void tint_drag(magic_api * api, int which, SDL_Surface * canvas,
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SDL_Surface * last, int ox, int oy, int x, int y, SDL_Rect * update_rect)
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{
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api->line((void *)api, which, canvas, last, ox, oy, x, y, 1, do_tint_brush);
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api->playsound(tint_snd_effect[which], (x * 255) / canvas->w, 255);
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if (ox > x)
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{
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int tmp = ox;
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ox = x;
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x = tmp;
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}
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if (oy > y)
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{
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int tmp = oy;
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oy = y;
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y = tmp;
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}
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update_rect->x = ox - tint_RADIUS;
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update_rect->y = oy - tint_RADIUS;
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update_rect->w = (x + tint_RADIUS) - update_rect->x;
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update_rect->h = (y + tint_RADIUS) - update_rect->y;
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}
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// Affect the canvas on click:
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void tint_click(magic_api * api, int which, int mode,
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SDL_Surface * canvas, SDL_Surface * last, int x, int y, SDL_Rect * update_rect)
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{
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if (mode == MODE_PAINT)
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tint_drag(api, which, canvas, last, x, y, x, y, update_rect);
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else
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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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do_tint_full(api, canvas, last, which);
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api->playsound(tint_snd_effect[which], 128, 255);
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}
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}
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// Affect the canvas on release:
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void tint_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 tint_shutdown(magic_api * api ATTRIBUTE_UNUSED)
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{
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//Clean up sounds
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int i;
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for (i = 0; i < tint_NUM_TOOLS; i++)
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{
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if (tint_snd_effect[i] != NULL)
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{
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Mix_FreeChunk(tint_snd_effect[i]);
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}
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}
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}
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// Record the color from Tux Paint:
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void tint_set_color(magic_api * api ATTRIBUTE_UNUSED, Uint8 r, Uint8 g, Uint8 b)
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{
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tint_r = r;
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tint_g = g;
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tint_b = b;
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}
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// Use colors:
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int tint_requires_colors(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
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{
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return 1;
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}
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void tint_switchin(magic_api * api, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED, SDL_Surface * canvas)
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{
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int x, y;
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Uint8 r1, g1, b1;
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for (y = 0; y < canvas->h; y++)
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{
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for (x = 0; x < canvas->w; x++)
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{
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SDL_GetRGB(api->getpixel(canvas, x, y), canvas->format, &r1, &g1, &b1);
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{
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int greyValue = tint_grey(r1, g1, b1);
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if (greyValue < tint_min)
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{
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tint_min = greyValue;
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}
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if (greyValue > tint_max)
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{
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tint_max = greyValue;
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}
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}
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}
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}
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}
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void tint_switchout(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED,
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SDL_Surface * canvas ATTRIBUTE_UNUSED)
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{
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}
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int tint_modes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
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{
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return (MODE_FULLSCREEN | MODE_PAINT);
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}
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