Slight cleanup of blind.c; new Checkerboard tool
Use enums everywhere; credits/copyright clean-up.
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Bill Kendrick
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5fa952c460
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67b05a0579
11 changed files with 288 additions and 14 deletions
245
magic/src/checkerboard.c
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245
magic/src/checkerboard.c
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/*
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checkeroard.c
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"Checkerboard" Magic Tools Plugin
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Tux Paint - A simple drawing program for children.
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By Bill Kendrick
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Based on `blind.c` by Pere Pujal Carabantes
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Copyright (c) 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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static Uint8 checkerboard_r, checkerboard_g, checkerboard_b;
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int checkerboard_start_x, checkerboard_start_y;
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Mix_Chunk *checkerboard_snd;
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// Prototypes
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Uint32 checkerboard_api_version(void);
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void checkerboard_set_color(magic_api * api, Uint8 r, Uint8 g, Uint8 b);
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int checkerboard_init(magic_api * api);
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int checkerboard_get_tool_count(magic_api * api);
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SDL_Surface *checkerboard_get_icon(magic_api * api, int which);
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char *checkerboard_get_name(magic_api * api, int which);
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char *checkerboard_get_description(magic_api * api, int which, int mode);
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int checkerboard_requires_colors(magic_api * api, int which);
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void checkerboard_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 checkerboard_shutdown(magic_api * api);
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void checkerboard_paint_checkerboard(void *ptr_to_api, int which_tool, SDL_Surface * canvas, SDL_Surface * snapshot, int x, int y);
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void checkerboard_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 checkerboard_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 checkerboard_switchin(magic_api * api, int which, int mode, SDL_Surface * canvas);
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void checkerboard_switchout(magic_api * api, int which, int mode, SDL_Surface * canvas);
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int checkerboard_modes(magic_api * api, int which);
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// Housekeeping functions
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Uint32 checkerboard_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 checkerboard_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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checkerboard_r = r;
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checkerboard_g = g;
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checkerboard_b = b;
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}
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int checkerboard_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/checkerboard.ogg", api->data_directory);
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checkerboard_snd = Mix_LoadWAV(fname);
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return (1);
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}
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int checkerboard_get_tool_count(magic_api * api ATTRIBUTE_UNUSED)
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{
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return 1;
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}
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SDL_Surface *checkerboard_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/checkerboard.png", api->data_directory);
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return (IMG_Load(fname));
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}
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char *checkerboard_get_name(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
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{
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return strdup(gettext_noop("Checkerboard"));
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}
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char *checkerboard_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 and drag to fill the canvas with a checkerboard pattern."));
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}
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int checkerboard_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 checkerboard_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 checkerboard_shutdown(magic_api * api ATTRIBUTE_UNUSED)
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{
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Mix_FreeChunk(checkerboard_snd);
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}
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// Interactivity functions
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void checkerboard_drag(magic_api * api, int which, SDL_Surface * canvas,
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SDL_Surface * snapshot,
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int ox ATTRIBUTE_UNUSED, int oy ATTRIBUTE_UNUSED,
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int x, int y, SDL_Rect * update_rect)
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{
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int sz, xx, yy;
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Uint8 draw_start, draw_row, draw_cell;
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Uint32 colr;
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SDL_Rect dest;
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SDL_BlitSurface(snapshot, NULL, canvas, NULL);
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sz = max(10, max(abs(x - checkerboard_start_x), abs(y - checkerboard_start_y)));
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colr = SDL_MapRGB(canvas->format, checkerboard_r, checkerboard_g, checkerboard_b);
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draw_start = 1;
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if (x < checkerboard_start_x)
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draw_start = !draw_start;
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if (y < checkerboard_start_y)
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draw_start = !draw_start;
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/* From the mouse Y position down... */
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draw_row = draw_start;
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for (yy = checkerboard_start_y; yy <= canvas->h; yy += sz) {
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/* From the mouse X position right... */
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draw_cell = draw_row;
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for (xx = checkerboard_start_x; xx <= canvas->w; xx += sz) {
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if (draw_cell) {
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dest.x = xx;
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dest.y = yy;
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dest.w = sz;
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dest.h = sz;
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SDL_FillRect(canvas, &dest, colr);
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}
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draw_cell = !draw_cell;
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}
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/* From the mouse X position left... */
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draw_cell = !draw_row;
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for (xx = checkerboard_start_x - sz; xx > -sz; xx -= sz) {
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if (draw_cell) {
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dest.x = xx;
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dest.y = yy;
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dest.w = sz;
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dest.h = sz;
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SDL_FillRect(canvas, &dest, colr);
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}
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draw_cell = !draw_cell;
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}
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draw_row = !draw_row;
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}
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/* From the mouse Y position up... */
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draw_row = !draw_start;
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for (yy = checkerboard_start_y - sz; yy > -sz; yy -= sz) {
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/* From the mouse X position right... */
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draw_cell = draw_row;
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for (xx = checkerboard_start_x; xx <= canvas->w; xx += sz) {
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if (draw_cell) {
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dest.x = xx;
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dest.y = yy;
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dest.w = sz;
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dest.h = sz;
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SDL_FillRect(canvas, &dest, colr);
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}
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draw_cell = !draw_cell;
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}
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/* From the mouse X position left... */
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draw_cell = !draw_row;
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for (xx = checkerboard_start_x - sz; xx > -sz; xx -= sz) {
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if (draw_cell) {
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dest.x = xx;
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dest.y = yy;
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dest.w = sz;
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dest.h = sz;
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SDL_FillRect(canvas, &dest, colr);
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}
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draw_cell = !draw_cell;
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}
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draw_row = !draw_row;
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}
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/* Always applies to the whole screen! */
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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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api->playsound(checkerboard_snd, 128, 255);
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}
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void checkerboard_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,
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SDL_Rect * update_rect)
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{
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checkerboard_start_x = x;
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checkerboard_start_y = y;
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checkerboard_drag(api, which, canvas, last, x, y, x, y, update_rect);
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}
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void checkerboard_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 checkerboard_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 checkerboard_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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