317 lines
9.7 KiB
C
317 lines
9.7 KiB
C
/*
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blind.c
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BLIND Magic Tools Plugin
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Tux Paint - A simple drawing program for children.
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By Pere Pujal Carabantes
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Copyright (c) 2009-2021
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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 "tp_magic_api.h"
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#include "SDL_image.h"
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#include "SDL_mixer.h"
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int BLIND_RADIUS = 16;
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int BLIND_OPAQUE = 20;
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int BLIND_THICKNESS = 30;
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int blind_side; /* 0 top, 1 left, 2 bottom, 3 right */
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static Uint8 blind_r, blind_g, blind_b, blind_light;
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enum blind_sides
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{
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BLIND_SIDE_TOP,
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BLIND_SIDE_LEFT,
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BLIND_SIDE_BOTTOM,
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BLIND_SIDE_RIGHT
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};
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enum blind_tools
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{
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BLIND_TOOL_BLIND,
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BLIND_NUMTOOLS
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};
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Mix_Chunk *blind_snd;
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// Prototypes
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Uint32 blind_api_version(void);
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void blind_set_color(magic_api * api, Uint8 r, Uint8 g, Uint8 b);
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int blind_init(magic_api * api);
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int blind_get_tool_count(magic_api * api);
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SDL_Surface *blind_get_icon(magic_api * api, int which);
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char *blind_get_name(magic_api * api, int which);
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int blind_get_group(magic_api * api, int which);
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char *blind_get_description(magic_api * api, int which, int mode);
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int blind_requires_colors(magic_api * api, int which);
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void blind_release(magic_api * api, int which,
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SDL_Surface * canvas, SDL_Surface * snapshot, int x, int y, SDL_Rect * update_rect);
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void blind_shutdown(magic_api * api);
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void blind_paint_blind(void *ptr_to_api, int which_tool, SDL_Surface * canvas, SDL_Surface * snapshot, int x, int y);
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void blind_drag(magic_api * api, int which, SDL_Surface * canvas,
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SDL_Surface * snapshot, int ox, int oy, int x, int y, SDL_Rect * update_rect);
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void blind_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 blind_switchin(magic_api * api, int which, int mode, SDL_Surface * canvas);
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void blind_switchout(magic_api * api, int which, int mode, SDL_Surface * canvas);
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int blind_modes(magic_api * api, int which);
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// Housekeeping functions
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Uint32 blind_api_version(void)
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{
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return (TP_MAGIC_API_VERSION);
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}
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void blind_set_color(magic_api * api ATTRIBUTE_UNUSED, Uint8 r, Uint8 g, Uint8 b) //get the colors from API and store it in structure
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{
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blind_r = r;
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blind_g = g;
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blind_b = b;
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}
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int blind_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/blind.ogg", api->data_directory);
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blind_snd = Mix_LoadWAV(fname);
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return (1);
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}
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int blind_get_tool_count(magic_api * api ATTRIBUTE_UNUSED)
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{
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return BLIND_NUMTOOLS;
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}
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SDL_Surface *blind_get_icon(magic_api * api, int which ATTRIBUTE_UNUSED)
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{
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char fname[1024];
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snprintf(fname, sizeof(fname), "%s/images/magic/blind.png", api->data_directory);
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return (IMG_Load(fname));
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}
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char *blind_get_name(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
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{
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return strdup(gettext_noop("Blind"));
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}
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int blind_get_group(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
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{
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return MAGIC_TYPE_PICTURE_DECORATIONS;
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}
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char *blind_get_description(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED)
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{
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return
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strdup(gettext_noop
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("Click towards the edge of your picture to pull window blinds over it. Move perpendicularly to open or close the blinds."));
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}
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int blind_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 blind_release(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED,
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SDL_Surface * canvas ATTRIBUTE_UNUSED, SDL_Surface * snapshot 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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void blind_shutdown(magic_api * api ATTRIBUTE_UNUSED)
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{
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Mix_FreeChunk(blind_snd);
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}
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// Interactivity functions
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void blind_paint_blind(void *ptr_to_api, int which_tool ATTRIBUTE_UNUSED,
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SDL_Surface * canvas, SDL_Surface * snapshot ATTRIBUTE_UNUSED, int x, int y)
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{
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magic_api *api = (magic_api *) ptr_to_api;
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api->putpixel(canvas, x, y,
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SDL_MapRGB(canvas->format, (blind_r + blind_light) / 2, (blind_g + blind_light) / 2,
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(blind_b + blind_light) / 2));
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}
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/* void blind_do_blind(void * ptr_to_api, int which_tool,
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SDL_Surface * canvas, SDL_Surface * snapshot, int x, int y)
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{
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magic_api * api = (magic_api *) ptr_to_api;
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api->putpixel(canvas, x, y, SDL_MapRGB(canvas->format, 128, 128, 165));
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//api->putpixel(canvas, x, y, SDL_MapRGB(canvas->format, 0, 0, 255));
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}
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*/
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void blind_drag(magic_api * api, int which, SDL_Surface * canvas,
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SDL_Surface * snapshot, int ox, int oy, int x, int y, SDL_Rect * update_rect)
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{
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int opaque;
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SDL_BlitSurface(snapshot, NULL, canvas, NULL);
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switch (blind_side)
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{
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int i, j;
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case BLIND_SIDE_TOP:
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opaque = max((x * BLIND_THICKNESS) / canvas->w + 2, 2);
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for (i = y; i >= 0; i -= BLIND_THICKNESS)
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{
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blind_light = 255;
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for (j = i; j > i - opaque / 2; j--)
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{
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api->line(api, which, canvas, snapshot, 0, j, canvas->w, j, 1, blind_paint_blind);
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blind_light -= 20;
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}
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for (j = i - opaque / 2; j > i - opaque; j--)
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{
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api->line(api, which, canvas, snapshot, 0, j, canvas->w, j, 1, blind_paint_blind);
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blind_light += 20;
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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 = max(oy, y);
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api->playsound(blind_snd, 128, 255);
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break;
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case BLIND_SIDE_BOTTOM:
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opaque = max((x * BLIND_THICKNESS) / canvas->w + 2, 2);
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for (i = y; i <= canvas->h; i += BLIND_THICKNESS)
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{
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blind_light = 255;
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for (j = i; j < i + opaque / 2; j++)
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{
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api->line(api, which, canvas, snapshot, 0, j, canvas->w, j, 1, blind_paint_blind);
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blind_light -= 20;
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}
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for (j = i + opaque / 2; j < i + opaque; j++)
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{
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api->line(api, which, canvas, snapshot, 0, j, canvas->w, j, 1, blind_paint_blind);
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blind_light += 20;
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}
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}
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update_rect->x = 0;
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update_rect->y = min(oy, y);
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update_rect->w = canvas->w;
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update_rect->h = canvas->h - update_rect->y;
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api->playsound(blind_snd, 128, 255);
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break;
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case BLIND_SIDE_RIGHT:
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opaque = max((y * BLIND_THICKNESS) / canvas->h + 2, 2);
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for (i = x; i <= canvas->w; i += BLIND_THICKNESS)
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{
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blind_light = 255;
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for (j = i; j < i + opaque / 2; j++)
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{
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api->line(api, which, canvas, snapshot, j, 0, j, canvas->h, 1, blind_paint_blind);
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blind_light -= 20;
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}
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for (j = i + opaque / 2; j < i + opaque; j++)
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{
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api->line(api, which, canvas, snapshot, j, 0, j, canvas->h, 1, blind_paint_blind);
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blind_light += 20;
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}
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}
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update_rect->x = min(ox, x);
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update_rect->y = 0;
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update_rect->w = canvas->w - update_rect->x;
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update_rect->h = canvas->h;
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api->playsound(blind_snd, (x * 255) / canvas->w, 255);
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break;
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case BLIND_SIDE_LEFT:
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opaque = max((y * BLIND_THICKNESS) / canvas->h + 2, 2);
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for (i = x; i >= 0; i -= BLIND_THICKNESS)
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{
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blind_light = 255;
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for (j = i; j > i - opaque / 2; j--)
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{
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api->line(api, which, canvas, snapshot, j, 0, j, canvas->h, 1, blind_paint_blind);
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blind_light -= 20;
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}
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for (j = i - opaque / 2; j > i - opaque; j--)
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{
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api->line(api, which, canvas, snapshot, j, 0, j, canvas->h, 1, blind_paint_blind);
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blind_light += 20;
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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 = max(ox, x);
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update_rect->h = canvas->h;
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api->playsound(blind_snd, (x * 255) / canvas->w, 255);
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break;
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}
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}
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void blind_click(magic_api * api, int which, int mode ATTRIBUTE_UNUSED,
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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 (y < canvas->h / 2)
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{
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if (x < y)
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blind_side = BLIND_SIDE_LEFT;
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else if (canvas->w - x < y)
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blind_side = BLIND_SIDE_RIGHT;
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else
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blind_side = BLIND_SIDE_TOP;
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}
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else
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{
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if (x < canvas->h - y)
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blind_side = BLIND_SIDE_LEFT;
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else if (canvas->w - x < canvas->h - y)
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blind_side = BLIND_SIDE_RIGHT;
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else
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blind_side = BLIND_SIDE_BOTTOM;
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}
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blind_drag(api, which, canvas, last, x, y, x, y, update_rect);
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}
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void blind_switchin(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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void blind_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 blind_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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