notgne2/tuxpaint-pencil-sharpener
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
tuxpaint-pencil-sharpener/magic/src/shift.c
Bill Kendrick 0517b4392c Update URL to https://tuxpaint.org/ everywhere 
Also, add other social media accounts to list of places to
announce Tux Paint in RELEASE docs.

Also, list a ton more options missing from default example config file
"src/tuxpaint.conf"
2022-12-11 01:29:25 -08:00

367 lines
8.5 KiB
C
Raw Blame History

/*
shift.c
Shift Magic Tool Plugin
Tux Paint - A simple drawing program for children.
Copyright (c) 2002-2022 by Bill Kendrick and others; see AUTHORS.txt
bill@newbreedsoftware.com
https://tuxpaint.org/
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)
Last updated: December 11, 2022
$Id$
*/
#include <stdio.h>
#include <string.h>
#include "tp_magic_api.h"
#include "SDL_image.h"
#include "SDL_mixer.h"
#include "math.h"
/* Our globals: */
static int shift_x, shift_y;
static Mix_Chunk *shift_snd;
/* Local function prototypes: */
static void shift_doit(magic_api * api, int which, SDL_Surface * canvas,
SDL_Surface * last, int ox, int oy, int x, int y,
SDL_Rect * update_rect, int crosshairs);
Uint32 shift_api_version(void);
int shift_init(magic_api * api);
int shift_get_tool_count(magic_api * api);
SDL_Surface *shift_get_icon(magic_api * api, int which);
char *shift_get_name(magic_api * api, int which);
int shift_get_group(magic_api * api, int which);
char *shift_get_description(magic_api * api, int which, int mode);
void shift_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 shift_click(magic_api * api, int which, int mode, SDL_Surface * canvas,
SDL_Surface * last, int x, int y, SDL_Rect * update_rect);
void shift_release(magic_api * api, int which, SDL_Surface * canvas,
SDL_Surface * last, int x, int y, SDL_Rect * update_rect);
void shift_shutdown(magic_api * api);
void shift_set_color(magic_api * api, Uint8 r, Uint8 g, Uint8 b);
int shift_requires_colors(magic_api * api, int which);
void shift_switchin(magic_api * api, int which, int mode,
SDL_Surface * canvas);
void shift_switchout(magic_api * api, int which, int mode,
SDL_Surface * canvas);
int shift_modes(magic_api * api, int which);
Uint32 shift_api_version(void)
{
return (TP_MAGIC_API_VERSION);
}
// No setup required:
int shift_init(magic_api * api)
{
char fname[1024];
snprintf(fname, sizeof(fname), "%ssounds/magic/shift.ogg",
api->data_directory);
shift_snd = Mix_LoadWAV(fname);
return (1);
}
// We have multiple tools:
int shift_get_tool_count(magic_api * api ATTRIBUTE_UNUSED)
{
return (1);
}
// Load our icons:
SDL_Surface *shift_get_icon(magic_api * api ATTRIBUTE_UNUSED,
int which ATTRIBUTE_UNUSED)
{
char fname[1024];
snprintf(fname, sizeof(fname), "%simages/magic/shift.png",
api->data_directory);
return (IMG_Load(fname));
}
// Return our names, localized:
char *shift_get_name(magic_api * api ATTRIBUTE_UNUSED,
int which ATTRIBUTE_UNUSED)
{
return (strdup(gettext_noop("Shift")));
}
// Return our group
int shift_get_group(magic_api * api ATTRIBUTE_UNUSED,
int which ATTRIBUTE_UNUSED)
{
return MAGIC_TYPE_PICTURE_WARPS;
}
// Return our descriptions, localized:
char *shift_get_description(magic_api * api ATTRIBUTE_UNUSED,
int which ATTRIBUTE_UNUSED,
int mode ATTRIBUTE_UNUSED)
{
return (strdup
(gettext_noop
("Click and drag to shift your picture around on the canvas.")));
}
// Affect the canvas on drag:
void shift_drag(magic_api * api, int which, SDL_Surface * canvas,
SDL_Surface * last, int ox, int oy, int x, int y,
SDL_Rect * update_rect)
{
if (ox == x && oy == y)
return; /* No-op */
shift_doit(api, which, canvas, last, ox, oy, x, y, update_rect, 1);
}
static void shift_doit(magic_api * api ATTRIBUTE_UNUSED,
int which ATTRIBUTE_UNUSED, SDL_Surface * canvas,
SDL_Surface * last, int ox ATTRIBUTE_UNUSED,
int oy ATTRIBUTE_UNUSED, int x, int y,
SDL_Rect * update_rect, int crosshairs)
{
SDL_Rect dest;
int dx, dy;
dx = x - shift_x;
dy = y - shift_y;
while (dx < -canvas->w)
dx += canvas->w;
while (dx > canvas->w)
dx -= canvas->w;
while (dy < -canvas->h)
dy += canvas->h;
while (dy > canvas->h)
dy -= canvas->h;
/* Center */
dest.x = dx;
dest.y = dy;
SDL_BlitSurface(last, NULL, canvas, &dest);
if (dy > 0)
{
if (dx > 0)
{
/* Top Left */
dest.x = dx - canvas->w;
dest.y = dy - canvas->h;
SDL_BlitSurface(last, NULL, canvas, &dest);
}
/* Top */
dest.x = dx;
dest.y = dy - canvas->h;
SDL_BlitSurface(last, NULL, canvas, &dest);
if (dx < 0)
{
/* Top Right */
dest.x = dx + canvas->w;
dest.y = dy - canvas->h;
SDL_BlitSurface(last, NULL, canvas, &dest);
}
}
if (dx > 0)
{
/* Left */
dest.x = dx - canvas->w;
dest.y = dy;
SDL_BlitSurface(last, NULL, canvas, &dest);
}
if (dx < 0)
{
/* Right */
dest.x = dx + canvas->w;
dest.y = dy;
SDL_BlitSurface(last, NULL, canvas, &dest);
}
if (dy < 0)
{
if (dx > 0)
{
/* Bottom Left */
dest.x = dx - canvas->w;
dest.y = dy + canvas->h;
SDL_BlitSurface(last, NULL, canvas, &dest);
}
/* Bottom */
dest.x = dx;
dest.y = dy + canvas->h;
SDL_BlitSurface(last, NULL, canvas, &dest);
if (dx < 0)
{
/* Bottom Right */
dest.x = dx + canvas->w;
dest.y = dy + canvas->h;
SDL_BlitSurface(last, NULL, canvas, &dest);
}
}
if (crosshairs)
{
dest.x = (canvas->w / 2) - 1;
dest.y = 0;
dest.w = 3;
dest.h = canvas->h;
SDL_FillRect(canvas, &dest, SDL_MapRGB(canvas->format, 255, 255, 255));
dest.x = 0;
dest.y = (canvas->h / 2) - 1;
dest.w = canvas->w;
dest.h = 3;
SDL_FillRect(canvas, &dest, SDL_MapRGB(canvas->format, 255, 255, 255));
dest.x = canvas->w / 2;
dest.y = 0;
dest.w = 1;
dest.h = canvas->h;
SDL_FillRect(canvas, &dest, SDL_MapRGB(canvas->format, 0, 0, 0));
dest.x = 0;
dest.y = canvas->h / 2;
dest.w = canvas->w;
dest.h = 1;
SDL_FillRect(canvas, &dest, SDL_MapRGB(canvas->format, 0, 0, 0));
}
/* Update everything! */
update_rect->x = 0;
update_rect->y = 0;
update_rect->w = canvas->w;
update_rect->h = canvas->h;
api->playsound(shift_snd, (x * 255) / canvas->w, 255);
}
// Affect the canvas on click:
void shift_click(magic_api * api, int which, int mode ATTRIBUTE_UNUSED,
SDL_Surface * canvas, SDL_Surface * last, int x, int y,
SDL_Rect * update_rect)
{
shift_x = x;
shift_y = y;
shift_doit(api, which, canvas, last, x, y, x, y, update_rect, 1);
}
// Affect the canvas on release:
void shift_release(magic_api * api, int which,
SDL_Surface * canvas, SDL_Surface * last, int x, int y,
SDL_Rect * update_rect)
{
shift_doit(api, which, canvas, last, x, y, x, y, update_rect, 0);
api->stopsound();
}
// No setup happened:
void shift_shutdown(magic_api * api ATTRIBUTE_UNUSED)
{
if (shift_snd != NULL)
Mix_FreeChunk(shift_snd);
}
// Record the color from Tux Paint:
void shift_set_color(magic_api * api ATTRIBUTE_UNUSED,
Uint8 r ATTRIBUTE_UNUSED, Uint8 g ATTRIBUTE_UNUSED,
Uint8 b ATTRIBUTE_UNUSED)
{
}
// Use colors:
int shift_requires_colors(magic_api * api ATTRIBUTE_UNUSED,
int which ATTRIBUTE_UNUSED)
{
return 0;
}
void shift_switchin(magic_api * api ATTRIBUTE_UNUSED,
int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED,
SDL_Surface * canvas ATTRIBUTE_UNUSED)
{
}
void shift_switchout(magic_api * api ATTRIBUTE_UNUSED,
int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED,
SDL_Surface * canvas ATTRIBUTE_UNUSED)
{
}
int shift_modes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
{
return (MODE_PAINT_WITH_PREVIEW);
}
Reference in a new issue View git blame Copy permalink