Adding 'confetti' and 'fold' Magic tools (by foo-script for GSOC 2008).
This commit is contained in:
William Kendrick
parent
4ce336327d
commit
c321359b59
5 changed files with 470 additions and 3 deletions
268
magic/src/fold.c
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268
magic/src/fold.c
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//optimized version soon :)
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//when "folding" same corner many times it gives strange results. Now it's allowed. Let me know
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//if you think it shouldn't be.
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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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#define FOLD_LEN 80
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Mix_Chunk * fold_snd;
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Uint8 fold_r, fold_g, fold_b;
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Uint32 fold_color;
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SDL_Surface * fold_surface_src, * fold_surface_dst;
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// Housekeeping functions
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void fold_drag(magic_api * api, int which, SDL_Surface * canvas,
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SDL_Surface * snapshot, int ox, int oy, int x, int y,
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SDL_Rect * update_rect);
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Uint32 fold_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 fold_set_color(magic_api * api, Uint8 r, Uint8 g, Uint8 b) //get the colors from API and store it in structure
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{
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fold_r=r;
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fold_g=g;
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fold_b=b;
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}
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int fold_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/fold.wav", api->data_directory);
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fold_snd = Mix_LoadWAV(fname);
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return(1);
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}
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int fold_get_tool_count(magic_api * api)
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{
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return 1;
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}
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SDL_Surface * fold_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), "%s/images/magic/fold.png",
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api->data_directory);
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return(IMG_Load(fname));
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}
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char * fold_get_name(magic_api * api, int which) { return(strdup("Fold")); }
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char * fold_get_description(magic_api * api, int which, int mode) { return strdup(gettext_noop("Choose a background color and click to turn the corner of the page over")); }
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int fold_requires_colors(magic_api * api, int which) { return 1; } //selected color will be a "backpage" color
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void fold_release(magic_api * api, int which,
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SDL_Surface * canvas, SDL_Surface * snapshot,
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int x, int y, SDL_Rect * update_rect)
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{
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}
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void fold_shutdown(magic_api * api)
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{
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Mix_FreeChunk(fold_snd);
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SDL_FreeSurface(fold_surface_dst);
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SDL_FreeSurface(fold_surface_src);
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}
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// Interactivity functions
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inline Uint8 fold_what_corner(int x, int y, SDL_Surface * canvas)
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{
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if (x>=canvas->w/2)
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{
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if (y>=canvas->h/2) return 4;
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else return 1;
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}
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else
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{
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if (y>=canvas->h/2) return 3;
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else return 2;
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}
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}
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void static fold_rotate(void * ptr, SDL_Surface * canvas, SDL_Surface * snapshot, Uint8 corner)
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{
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magic_api * api = (magic_api *) ptr;
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unsigned int x,y;
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if ((corner==2) || (corner==4)) //rotate +90 degs
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{
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for (x = 0; x<FOLD_LEN; x++)
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for (y =0; y<FOLD_LEN; y++)
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api->putpixel(canvas, x, y, api->getpixel(snapshot, y, FOLD_LEN-x));
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}
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else //rotate -90 degs
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{
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for (x=0; x<FOLD_LEN; x++)
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for (y=0; y<FOLD_LEN; y++)
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api->putpixel(canvas,x,y,api->getpixel(snapshot,FOLD_LEN-y,x));
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}
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}
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void static fold_flip(void * ptr, SDL_Surface * canvas, SDL_Surface * snapshot, Uint8 corner) //flip page
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{
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magic_api * api = (magic_api *) ptr;
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unsigned int x, y;
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for (x=0; x<snapshot->w; x++)
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for (y=0; y<snapshot->h; y++)
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api->putpixel(canvas, x, y, api->getpixel(snapshot, snapshot->w-x, y)); //flip horizontal
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}
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static void fold_print_line(void * ptr, int which, SDL_Surface * canvas, SDL_Surface * last,
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int x, int y)
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{
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magic_api * api = (magic_api *) ptr;
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api->putpixel(canvas, x, y, SDL_MapRGB(last->format, 222, 222, 222)); //Middle gray. Color have been set arbitrary.
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}
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static void fold_erase(void * ptr, int which, SDL_Surface * canvas, SDL_Surface * last,
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int x, int y)
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{
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magic_api * api = (magic_api *) ptr;
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api->putpixel(canvas, x, y, fold_color);
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}
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static void fold_draw_triangle (magic_api * ptr, int which, SDL_Surface * canvas, SDL_Surface * snapshot, Uint8 corner)
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{
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magic_api * api = (magic_api *) ptr;
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unsigned int i;
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//this function could be optimized but it would make this code less readable
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switch(corner) //corners in mathematical order: 1: right upper, 2: left upper, ...
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{
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case 1:
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for (i = 0; i < FOLD_LEN; i++)
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api->line((void *)api, which, canvas, snapshot, canvas->w-FOLD_LEN+i, 0, canvas->w, FOLD_LEN-i, 1, fold_erase);
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//clear the triangle by the corner
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api->line((void *)api, which, canvas, snapshot,canvas->w-FOLD_LEN, 0, canvas->w-FOLD_LEN, FOLD_LEN, 1, fold_print_line);
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//draw vertical line
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api->line((void *)api, which, canvas, snapshot,canvas->w-FOLD_LEN, FOLD_LEN, canvas->w, FOLD_LEN, 1, fold_print_line);
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//draw horizontal line
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api->line((void *)api, which, canvas, snapshot,canvas->w-FOLD_LEN, 0, canvas->w, FOLD_LEN, 1, fold_print_line);
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//and another: oblique
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break;
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case 2:
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for (i = 0; i < FOLD_LEN; i++)
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api->line((void *)api, which, canvas, snapshot, 0, FOLD_LEN-i, FOLD_LEN-i, 0, 1, fold_erase);
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//sequence just like above
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api->line((void *)api, which, canvas, snapshot,FOLD_LEN, 0, FOLD_LEN, FOLD_LEN, 1, fold_print_line);
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api->line((void *)api, which, canvas, snapshot,0, FOLD_LEN, FOLD_LEN, FOLD_LEN, 1, fold_print_line);
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api->line((void *)api, which, canvas, snapshot,0, FOLD_LEN, FOLD_LEN, 0, 1, fold_print_line);
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break;
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case 3:
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for (i = 0; i < FOLD_LEN; i++)
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api->line((void *)api, which, canvas, snapshot, 0, canvas->h-FOLD_LEN+i, FOLD_LEN-i, canvas->h, 1, fold_erase);
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api->line((void *)api, which, canvas, snapshot,FOLD_LEN, canvas->h-FOLD_LEN, FOLD_LEN, canvas->h, 1, fold_print_line);
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api->line((void *)api, which, canvas, snapshot,0, canvas->h-FOLD_LEN, FOLD_LEN, canvas->h-FOLD_LEN, 1, fold_print_line);
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api->line((void *)api, which, canvas, snapshot,0, canvas->h-FOLD_LEN, FOLD_LEN, canvas->h, 1, fold_print_line);
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break;
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case 4:
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for (i = 0; i < FOLD_LEN; i++)
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api->line((void *)api, which, canvas, snapshot, canvas->w-FOLD_LEN+i, canvas->h, canvas->w,
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canvas->h-FOLD_LEN+i, 1, fold_erase);
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api->line((void *)api, which, canvas, snapshot,canvas->w-FOLD_LEN, canvas->h-FOLD_LEN, canvas->w-FOLD_LEN,
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canvas->h, 1, fold_print_line);
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api->line((void *)api, which, canvas, snapshot,canvas->w-FOLD_LEN, canvas->h-FOLD_LEN, canvas->w,
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canvas->h-FOLD_LEN, 1, fold_print_line);
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api->line((void *)api, which, canvas, snapshot,canvas->w-FOLD_LEN, canvas->h, canvas->w, canvas->h-FOLD_LEN, 1, fold_print_line);
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break;
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}
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}
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void fold_click(magic_api * ptr, int which, int mode,
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SDL_Surface * canvas, SDL_Surface * snapshot,
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int x, int y, SDL_Rect * update_rect)
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{
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Uint8 corner;
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magic_api * api = (magic_api *) ptr;
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corner=fold_what_corner(x, y, snapshot);
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fold_color=SDL_MapRGB(snapshot->format, fold_r, fold_g, fold_b);
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fold_surface_src= SDL_CreateRGBSurface(SDL_ANYFORMAT, FOLD_LEN, FOLD_LEN, snapshot->format->BitsPerPixel,
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snapshot->format->Rmask, snapshot->format->Gmask, snapshot->format->Bmask, snapshot->format->Amask);
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fold_surface_dst=SDL_CreateRGBSurface(SDL_ANYFORMAT, FOLD_LEN, FOLD_LEN, snapshot->format->BitsPerPixel,
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snapshot->format->Rmask, snapshot->format->Gmask, snapshot->format->Bmask, snapshot->format->Amask);
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switch(corner)
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{
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case 1: //Right Upper
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update_rect->x=canvas->w-FOLD_LEN;
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update_rect->y=0;
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break;
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case 2: //LU
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update_rect->x=update_rect->y=0;
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break;
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case 3: //LL
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update_rect->x=0;
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update_rect->y=canvas->h-FOLD_LEN;
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break;
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case 4: //RL
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update_rect->x=canvas->w-FOLD_LEN;
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update_rect->y=canvas->h-FOLD_LEN;
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break;
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}
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update_rect->w=FOLD_LEN;
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update_rect->h=FOLD_LEN;
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SDL_BlitSurface(snapshot, update_rect, fold_surface_src, NULL);
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fold_flip(api, fold_surface_dst, fold_surface_src, corner);
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SDL_BlitSurface(fold_surface_dst, NULL, canvas, update_rect);
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SDL_BlitSurface(canvas, update_rect, fold_surface_src, NULL);
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fold_rotate(api, fold_surface_dst, fold_surface_src, corner);
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SDL_BlitSurface(fold_surface_dst, NULL, canvas, update_rect);
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fold_draw_triangle (api, which, canvas, snapshot, corner);
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}
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void fold_drag(magic_api * api, int which, SDL_Surface * canvas,
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SDL_Surface * snapshot, int ox, int oy, int x, int y,
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SDL_Rect * update_rect)
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{
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}
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void fold_switchin(magic_api * api, int which, SDL_Surface * canvas)
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{
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}
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void fold_switchout(magic_api * api, int which, SDL_Surface * canvas)
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{
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}
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int fold_modes(magic_api * api, int which)
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{
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return(MODE_PAINT);
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}
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