159 lines
3.6 KiB
C
159 lines
3.6 KiB
C
#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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enum {
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TOOL_FADE,
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TOOL_DARKEN,
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NUM_TOOLS
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};
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Mix_Chunk * snd_effects[NUM_TOOLS];
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int fade_darken_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/fade.wav",
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api->data_directory);
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snd_effects[TOOL_FADE] = Mix_LoadWAV(fname);
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snprintf(fname, sizeof(fname), "%s/sounds/magic/darken.wav",
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api->data_directory);
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snd_effects[TOOL_DARKEN] = Mix_LoadWAV(fname);
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return(1);
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}
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// Multiple tools:
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int fade_darken_get_tool_count(magic_api * api)
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{
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return(NUM_TOOLS);
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}
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// Load our icon:
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SDL_Surface * fade_darken_get_icon(magic_api * api, int which)
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{
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char fname[1024];
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if (which == TOOL_FADE)
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{
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snprintf(fname, sizeof(fname), "%s/images/magic/fade.png",
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api->data_directory);
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}
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else if (which == TOOL_DARKEN)
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{
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snprintf(fname, sizeof(fname), "%s/images/magic/darken.png",
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api->data_directory);
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}
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return(IMG_Load(fname));
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}
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// Return our name, localized:
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char * fade_darken_get_name(magic_api * api, int which)
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{
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if (which == TOOL_FADE)
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return(strdup(gettext("Lighten")));
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else if (which == TOOL_DARKEN)
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return(strdup(gettext("Darken")));
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return(NULL);
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}
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// Return our description, localized:
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char * fade_darken_get_description(magic_api * api, int which)
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{
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if (which == TOOL_FADE)
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return(strdup(
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gettext("Click and move to fade the colors.")));
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else if (which == TOOL_DARKEN)
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return(strdup(
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gettext("Click and move to darken the colors.")));
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return(NULL);
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}
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// Callback that does the fade_darken color effect on a circle centered around x,y
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void do_fade_darken(void * ptr, int which,
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SDL_Surface * canvas, SDL_Surface * last,
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int x, int y)
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{
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int xx, yy;
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Uint8 r, g, b;
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magic_api * api = (magic_api *) ptr;
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for (yy = y - 16; yy < y + 16; yy++)
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{
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for (xx = x - 16; xx < x + 16; xx++)
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{
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if (api->in_circle(xx - x, yy - y, 16))
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{
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SDL_GetRGB(api->getpixel(last, xx, yy), last->format, &r, &g, &b);
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if (which == TOOL_FADE)
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{
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r = min(r + 48, 255);
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g = min(g + 48, 255);
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b = min(b + 48, 255);
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}
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else if (which == TOOL_DARKEN)
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{
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r = max(r - 48, 0);
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g = max(g - 48, 0);
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b = max(b - 48, 0);
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}
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api->putpixel(canvas, xx, yy, SDL_MapRGB(canvas->format, r, g, b));
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}
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}
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}
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}
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// Ask Tux Paint to call our 'do_fade_darken()' callback over a line
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void fade_darken_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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{
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SDL_LockSurface(last);
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SDL_LockSurface(canvas);
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api->line(which, canvas, last, ox, oy, x, y, 1, do_fade_darken);
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api->playsound(snd_effects[which], (x * 255) / canvas->w, 255);
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SDL_UnlockSurface(canvas);
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SDL_UnlockSurface(last);
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}
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// Ask Tux Paint to call our 'do_fade_darken()' callback at a single point
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void fade_darken_click(magic_api * api, int which,
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SDL_Surface * canvas, SDL_Surface * last,
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int x, int y)
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{
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fade_darken_drag(api, which, canvas, last, x, y, x, y);
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}
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// No setup happened:
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void fade_darken_shutdown(magic_api * api)
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{
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if (snd_effects[0] != NULL)
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Mix_FreeChunk(snd_effects[0]);
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if (snd_effects[1] != NULL)
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Mix_FreeChunk(snd_effects[1]);
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}
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// We don't use colors
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void fade_darken_set_color(magic_api * api, Uint8 r, Uint8 g, Uint8 b)
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{
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}
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// We don't use colors
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int fade_darken_requires_colors(magic_api * api, int which)
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{
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return 0;
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}
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