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libcaca/ruby/caca-canvas.c

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22 KiB
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  1. /*

  2.  *  libcaca Ruby bindings

  3.  *  Copyright (c) 2007-2014 Pascal Terjan <pterjan@linuxfr.org>

  4.  *

  5.  *  This library is free software. It comes without any warranty, to

  6.  *  the extent permitted by applicable law. You can redistribute it

  7.  *  and/or modify it under the terms of the Do What the Fuck You Want

  8.  *  to Public License, Version 2, as published by Sam Hocevar. See

  9.  *  http://www.wtfpl.net/ for more details.

  10.  */

  11. 

  12. #include <ruby.h>

  13. #include <caca.h>

  14. #include <errno.h>

  15. #include "caca-dither.h"

  16. #include "caca-font.h"

  17. #include "common.h"

  18. 

  19. VALUE cCanvas;

  20. 

  21. #define simple_func(x)                                  \

  22. static VALUE x (VALUE self)                             \

  23. {                                                       \

  24.     if( caca_##x (_SELF) <0)                            \

  25.         rb_raise(rb_eRuntimeError, "%s", strerror(errno));    \

  26.                                                         \

  27.     return self;                                        \

  28. }

  29. 

  30. #define get_int(x)                                      \

  31. static VALUE get_##x (VALUE self)                       \

  32. {                                                       \

  33.     return INT2NUM(caca_get_##x (_SELF));               \

  34. }

  35. 

  36. static void canvas_free(void * p)

  37. {

  38.     caca_free_canvas((caca_canvas_t *)p);

  39. }

  40. 

  41. static VALUE canvas_alloc(VALUE klass)

  42. {

  43.     VALUE obj;

  44.     obj = Data_Wrap_Struct(klass, NULL, canvas_free, NULL);

  45.     return obj;

  46. }

  47. 

  48. VALUE canvas_create(caca_canvas_t *canvas)

  49. {

  50.     return Data_Wrap_Struct(cCanvas, NULL, NULL, canvas);

  51. }

  52. 

  53. static VALUE canvas_initialize(VALUE self, VALUE width, VALUE height)

  54. {

  55.     caca_canvas_t *canvas;

  56. 

  57.     canvas = caca_create_canvas(NUM2INT(width), NUM2INT(height));

  58. 

  59.     if(canvas == NULL)

  60.     {

  61.         rb_raise(rb_eRuntimeError, "%s", strerror(errno));

  62.     }

  63. 

  64.     _SELF = canvas;

  65. 

  66.     return self;

  67. }

  68. 

  69. get_int(canvas_height)

  70. get_int(canvas_width)

  71. 

  72. static VALUE set_canvas_width(VALUE self, VALUE width)

  73. {

  74.     caca_set_canvas_size(_SELF, NUM2INT(width), caca_get_canvas_height(_SELF));

  75.     return width;

  76. }

  77. 

  78. static VALUE set_canvas_width2(VALUE self, VALUE width)

  79. {

  80.     set_canvas_width(self, width);

  81.     return self;

  82. }

  83. 

  84. static VALUE set_canvas_height(VALUE self, VALUE height)

  85. {

  86.     caca_set_canvas_size(_SELF, caca_get_canvas_width(_SELF), NUM2INT(height));

  87.     return height;

  88. }

  89. 

  90. static VALUE set_canvas_height2(VALUE self, VALUE height)

  91. {

  92.     set_canvas_height(self, height);

  93.     return self;

  94. }

  95. 

  96. static VALUE set_canvas_size(VALUE self, VALUE height, VALUE width)

  97. {

  98.     caca_set_canvas_size(_SELF, NUM2INT(width), NUM2INT(height));

  99.     return self;

  100. }

  101. 

  102. /****/

  103. 

  104. static VALUE gotoxy(VALUE self, VALUE x, VALUE y)

  105. {

  106.     if( caca_gotoxy(_SELF, NUM2INT(x), NUM2INT(y)) <0) {

  107.         rb_raise(rb_eRuntimeError, "%s", strerror(errno));

  108.     }

  109.     return self;

  110. }

  111. 

  112. static VALUE wherex(VALUE self)

  113. {

  114.     return INT2NUM(caca_wherex(_SELF));

  115. }

  116. 

  117. static VALUE wherey(VALUE self)

  118. {

  119.     return INT2NUM(caca_wherey(_SELF));

  120. }

  121. 

  122. simple_func(clear_canvas)

  123. 

  124. static VALUE put_char(VALUE self, VALUE x, VALUE y, VALUE ch)

  125. {

  126.     caca_put_char(_SELF, NUM2INT(x), NUM2INT(y), NUM2ULONG(ch));

  127.     return self;

  128. }

  129. 

  130. static VALUE get_char(VALUE self, VALUE x, VALUE y)

  131. {

  132.     unsigned long int ch;

  133.     ch = caca_get_char(_SELF, NUM2INT(x), NUM2INT(y));

  134.     return INT2NUM(ch);

  135. }

  136. 

  137. static VALUE put_str(VALUE self, VALUE x, VALUE y, VALUE str)

  138. {

  139.     caca_put_str(_SELF, NUM2INT(x), NUM2INT(y), StringValuePtr(str));

  140.     return self;

  141. }

  142. 

  143. static VALUE get_attr(VALUE self, VALUE x, VALUE y)

  144. {

  145.     unsigned long int ch;

  146.     ch = caca_get_attr(_SELF, NUM2INT(x), NUM2INT(y));

  147.     return INT2NUM(ch);

  148. }

  149. 

  150. static VALUE set_attr(VALUE self, VALUE attr)

  151. {

  152.     if(caca_set_attr(_SELF, NUM2ULONG(attr)) <0)

  153.         rb_raise(rb_eRuntimeError, "%s", strerror(errno));

  154. 

  155.     return self;

  156. }

  157. 

  158. static VALUE set_attr2(VALUE self, VALUE attr)

  159. {

  160.     set_attr(self, attr);

  161.     return self;

  162. }

  163. 

  164. static VALUE put_attr(VALUE self, VALUE x, VALUE y, VALUE attr)

  165. {

  166.     if(caca_put_attr(_SELF, NUM2INT(x), NUM2INT(y), NUM2ULONG(attr)) <0)

  167.         rb_raise(rb_eRuntimeError, "%s", strerror(errno));

  168. 

  169.     return self;

  170. }

  171. 

  172. static VALUE set_color_ansi(VALUE self, VALUE fg, VALUE bg)

  173. {

  174.     if(caca_set_color_ansi(_SELF, NUM2INT(fg), NUM2INT(bg)) <0)

  175.         rb_raise(rb_eRuntimeError, "%s", strerror(errno));

  176. 

  177.     return self;

  178. }

  179. 

  180. static VALUE set_color_argb(VALUE self, VALUE fg, VALUE bg)

  181. {

  182.     if(caca_set_color_argb(_SELF, NUM2UINT(fg), NUM2UINT(bg)) <0) {

  183.         rb_raise(rb_eRuntimeError, "%s", strerror(errno));

  184.     }

  185.     return self;

  186. }

  187. 

  188. static VALUE cprintf(int argc, VALUE* argv, VALUE self)

  189. {

  190.     int x, y;

  191.     VALUE rx, ry, format, rest, string;

  192.     rb_scan_args(argc, argv, "3*", &rx, &ry, &format, &rest);

  193.     x = NUM2INT(rx);

  194.     y = NUM2INT(ry);

  195.     string = rb_funcall2(rb_mKernel, rb_intern("sprintf"), argc-2, argv+2);

  196.     caca_put_str(_SELF, x, y, StringValuePtr(string));

  197.     return self;

  198. }

  199. 

  200. 

  201. get_int(canvas_handle_x)

  202. get_int(canvas_handle_y)

  203. 

  204. static VALUE set_canvas_handle(VALUE self, VALUE x, VALUE y)

  205. {

  206.     caca_set_canvas_handle(_SELF, NUM2INT(x), NUM2INT(y));

  207.     return self;

  208. }

  209. 

  210. static VALUE blit(int argc, VALUE* argv, VALUE self) {

  211.     VALUE x, y, src, mask;

  212.     caca_canvas_t *csrc, *cmask;

  213. 

  214.     rb_scan_args(argc, argv, "31", &x, &y, &src, &mask);

  215. 

  216.     Check_Type(x, T_FIXNUM);

  217.     Check_Type(y, T_FIXNUM);

  218. 

  219.     if(CLASS_OF(src) != cCanvas)

  220.     {

  221.         rb_raise(rb_eArgError, "src is not a Caca::Canvas");

  222.     }

  223.     Data_Get_Struct(src, caca_canvas_t, csrc);

  224. 

  225.     if(!NIL_P(mask))

  226.     {

  227.         if(CLASS_OF(mask) != cCanvas)

  228.         {

  229.             rb_raise(rb_eArgError, "mask is not a Caca::Canvas");

  230.         }

  231.         Data_Get_Struct(mask, caca_canvas_t, cmask);

  232.     }

  233.     else

  234.         cmask = NULL;

  235. 

  236.     if(caca_blit(_SELF, NUM2INT(x), NUM2INT(y), csrc, cmask)<0)

  237.         rb_raise(rb_eRuntimeError, "%s", strerror(errno));

  238. 

  239.     return self;

  240. }

  241. 

  242. static VALUE set_canvas_boundaries(VALUE self, VALUE x, VALUE y, VALUE w, VALUE h)

  243. {

  244.     if(caca_set_canvas_boundaries(_SELF, NUM2INT(x), NUM2INT(y), NUM2UINT(w), NUM2UINT(h))<0)

  245.     {

  246.         rb_raise(rb_eRuntimeError, "%s", strerror(errno));

  247.     }

  248.     return self;

  249. }

  250. 

  251. /****/

  252. 

  253. simple_func(invert)

  254. simple_func(flip)

  255. simple_func(flop)

  256. simple_func(rotate_180)

  257. simple_func(rotate_left)

  258. simple_func(rotate_right)

  259. simple_func(stretch_left)

  260. simple_func(stretch_right)

  261. 

  262. /****/

  263. 

  264. static VALUE draw_line(VALUE self, VALUE x1, VALUE y1, VALUE x2, VALUE y2, VALUE ch)

  265. {

  266.     caca_draw_line(_SELF, NUM2INT(x1), NUM2INT(y1), NUM2INT(x2), NUM2INT(y2),NUM2ULONG(ch));

  267.     return self;

  268. }

  269. 

  270. static VALUE draw_polyline(VALUE self, VALUE points, VALUE ch)

  271. {

  272.     int i, n;

  273.     int *ax, *ay;

  274.     int error = 0;

  275.     VALUE v, x, y;

  276. 

  277.     n = RARRAY_LEN(points);

  278. 

  279.     ax = (int*)malloc(n*sizeof(int));

  280.     if(!ax)

  281.         rb_raise(rb_eNoMemError,"Out of memory");

  282. 

  283.     ay = (int*)malloc(n*sizeof(int));

  284.     if(!ay)

  285.     {

  286.         free(ax);

  287.         rb_raise(rb_eNoMemError,"Out of memory");

  288.     }

  289. 

  290.     for(i=0; i<n; i++)

  291.     {

  292.         v = rb_ary_entry(points, i);

  293.         if((TYPE(v) == T_ARRAY) && (RARRAY_LEN(v) == 2))

  294.         {

  295.             x = rb_ary_entry(v,0);

  296.             y = rb_ary_entry(v,1);

  297.             if(rb_obj_is_kind_of(x, rb_cInteger) &&

  298.                rb_obj_is_kind_of(y, rb_cInteger))

  299.             {

  300.                 ax[i] = NUM2INT(x);

  301.                 ay[i] = NUM2INT(y);

  302.             } else

  303.                 error = 1;

  304.         }

  305.         else

  306.             error = 1;

  307.     }

  308. 

  309.     if(error)

  310.     {

  311.         free(ax);

  312.         free(ay);

  313.         rb_raise(rb_eArgError, "Invalid list of points");

  314.     }

  315. 

  316.     n--;

  317. 

  318.     caca_draw_polyline(_SELF, ax, ay, n, NUM2ULONG(ch));

  319. 

  320.     free(ax);

  321.     free(ay);

  322. 

  323.     return self;

  324. }

  325. 

  326. static VALUE draw_thin_line(VALUE self, VALUE x1, VALUE y1, VALUE x2, VALUE y2)

  327. {

  328.     caca_draw_thin_line(_SELF, NUM2INT(x1), NUM2INT(y1), NUM2INT(x2), NUM2INT(y2));

  329.     return self;

  330. }

  331. 

  332. static VALUE draw_thin_polyline(VALUE self, VALUE points)

  333. {

  334.     int i, n;

  335.     int *ax, *ay;

  336.     int error = 0;

  337.     VALUE v, x, y;

  338. 

  339.     n = RARRAY_LEN(points);

  340. 

  341.     ax = (int*)malloc(n*sizeof(int));

  342.     if(!ax)

  343.         rb_raise(rb_eNoMemError,"Out of memory");

  344. 

  345.     ay = (int*)malloc(n*sizeof(int));

  346.     if(!ay)

  347.     {

  348.         free(ax);

  349.         rb_raise(rb_eNoMemError,"Out of memory");

  350.     }

  351. 

  352.     for(i=0; i<n; i++)

  353.     {

  354.         v = rb_ary_entry(points, i);

  355.         if((TYPE(v) == T_ARRAY) && (RARRAY_LEN(v) == 2))

  356.         {

  357.             x = rb_ary_entry(v,0);

  358.             y = rb_ary_entry(v,1);

  359.             if(rb_obj_is_kind_of(x, rb_cInteger) &&

  360.                rb_obj_is_kind_of(y, rb_cInteger))

  361.             {

  362.                 ax[i] = NUM2INT(x);

  363.                 ay[i] = NUM2INT(y);

  364.             } else

  365.                 error = 1;

  366.         }

  367.         else

  368.             error = 1;

  369.     }

  370. 

  371.     if(error)

  372.     {

  373.         free(ax);

  374.         free(ay);

  375.         rb_raise(rb_eArgError, "Invalid list of points");

  376.     }

  377. 

  378.     n--;

  379. 

  380.     caca_draw_thin_polyline(_SELF, ax, ay, n);

  381. 

  382.     free(ax);

  383.     free(ay);

  384. 

  385.     return self;

  386. }

  387. 

  388. static VALUE draw_circle(VALUE self, VALUE x, VALUE y, VALUE r, VALUE ch)

  389. {

  390.     caca_draw_circle(_SELF, NUM2INT(x), NUM2INT(y), NUM2INT(r), NUM2ULONG(ch));

  391.     return self;

  392. }

  393. 

  394. static VALUE draw_ellipse(VALUE self, VALUE x, VALUE y, VALUE a, VALUE b, VALUE ch)

  395. {

  396.     caca_draw_ellipse(_SELF, NUM2INT(x), NUM2INT(y), NUM2INT(a), NUM2INT(b), NUM2ULONG(ch));

  397.     return self;

  398. }

  399. 

  400. static VALUE draw_thin_ellipse(VALUE self, VALUE x, VALUE y, VALUE a, VALUE b)

  401. {

  402.     caca_draw_thin_ellipse(_SELF, NUM2INT(x), NUM2INT(y), NUM2INT(a), NUM2INT(b));

  403.     return self;

  404. }

  405. 

  406. static VALUE fill_ellipse(VALUE self, VALUE x, VALUE y, VALUE a, VALUE b, VALUE ch)

  407. {

  408.     caca_fill_ellipse(_SELF, NUM2INT(x), NUM2INT(y), NUM2INT(a), NUM2INT(b), NUM2ULONG(ch));

  409.     return self;

  410. }

  411. 

  412. static VALUE draw_box(VALUE self, VALUE x, VALUE y, VALUE w, VALUE h, VALUE ch)

  413. {

  414.     caca_draw_box(_SELF, NUM2INT(x), NUM2INT(y), NUM2INT(w), NUM2INT(h), NUM2ULONG(ch));

  415.     return self;

  416. }

  417. 

  418. static VALUE draw_thin_box(VALUE self, VALUE x, VALUE y, VALUE w, VALUE h)

  419. {

  420.     caca_draw_thin_box(_SELF, NUM2INT(x), NUM2INT(y), NUM2INT(w), NUM2INT(h));

  421.     return self;

  422. }

  423. 

  424. static VALUE draw_cp437_box(VALUE self, VALUE x, VALUE y, VALUE w, VALUE h)

  425. {

  426.     caca_draw_cp437_box(_SELF, NUM2INT(x), NUM2INT(y), NUM2INT(w), NUM2INT(h));

  427.     return self;

  428. }

  429. 

  430. static VALUE fill_box(VALUE self, VALUE x, VALUE y, VALUE w, VALUE h, VALUE ch)

  431. {

  432.     caca_fill_box(_SELF, NUM2INT(x), NUM2INT(y), NUM2INT(w), NUM2INT(h), NUM2ULONG(ch));

  433.     return self;

  434. }

  435. 

  436. static VALUE draw_triangle(VALUE self, VALUE x1, VALUE y1, VALUE x2, VALUE y2, VALUE x3, VALUE y3, VALUE ch)

  437. {

  438.     caca_draw_triangle(_SELF, NUM2INT(x1), NUM2INT(y1), NUM2INT(x2), NUM2INT(y2),  NUM2INT(x3), NUM2INT(y3), NUM2ULONG(ch));

  439.     return self;

  440. }

  441. 

  442. static VALUE draw_thin_triangle(VALUE self, VALUE x1, VALUE y1, VALUE x2, VALUE y2, VALUE x3, VALUE y3)

  443. {

  444.     caca_draw_thin_triangle(_SELF, NUM2INT(x1), NUM2INT(y1), NUM2INT(x2), NUM2INT(y2),  NUM2INT(x3), NUM2INT(y3));

  445.     return self;

  446. }

  447. 

  448. static VALUE fill_triangle(VALUE self, VALUE x1, VALUE y1, VALUE x2, VALUE y2, VALUE x3, VALUE y3, VALUE ch)

  449. {

  450.     caca_fill_triangle(_SELF, NUM2INT(x1), NUM2INT(y1), NUM2INT(x2), NUM2INT(y2),  NUM2INT(x3), NUM2INT(y3), NUM2ULONG(ch));

  451.     return self;

  452. }

  453. 

  454. static VALUE fill_triangle_textured(VALUE self, VALUE coords, VALUE texture, VALUE uv)

  455. {

  456.     caca_canvas_t *ctexture;

  457.     int i, l;

  458.     int ccoords[6];

  459.     float cuv[6];

  460.     VALUE v;

  461. 

  462.     l = RARRAY_LEN(coords);

  463.     if(l != 6 && l != 3)

  464.     {

  465.         rb_raise(rb_eArgError, "invalid coords list");

  466.     }

  467.     for(i=0; i<l; i++)

  468.     {

  469.         v = rb_ary_entry(coords, i);

  470.         if(l==6)

  471.             ccoords[i] = NUM2INT(v);

  472.         else

  473.         {

  474.             if((TYPE(v) != T_ARRAY) || (RARRAY_LEN(v) != 2))

  475.                 rb_raise(rb_eArgError, "invalid coords list");

  476.             ccoords[2*i] = NUM2INT(rb_ary_entry(v, 0));

  477.             ccoords[2*i+1] = NUM2INT(rb_ary_entry(v, 1));

  478.         }

  479.     }

  480. 

  481.     l = RARRAY_LEN(uv);

  482.     if(l != 6 && l != 3)

  483.     {

  484.         rb_raise(rb_eArgError, "invalid uv list");

  485.     }

  486.     for(i=0; i<l; i++)

  487.     {

  488.         v = rb_ary_entry(uv, i);

  489.         if(l==6)

  490.             cuv[i] = NUM2DBL(v);

  491.         else

  492.         {

  493.             if((TYPE(v) != T_ARRAY) || (RARRAY_LEN(v) != 2))

  494.                 rb_raise(rb_eArgError, "invalid uv list");

  495.             cuv[2*i] = NUM2DBL(rb_ary_entry(v, 0));

  496.             cuv[2*i+1] = NUM2DBL(rb_ary_entry(v, 1));

  497.         }

  498.     }

  499. 

  500.     if(CLASS_OF(texture) != cCanvas)

  501.     {

  502.         rb_raise(rb_eArgError, "texture is not a Caca::Canvas");

  503.     }

  504.     Data_Get_Struct(texture, caca_canvas_t, ctexture);

  505. 

  506.     caca_fill_triangle_textured(_SELF, ccoords, ctexture, cuv);

  507.     return self;

  508. }

  509. 

  510. static VALUE dither_bitmap(VALUE self, VALUE x, VALUE y, VALUE w, VALUE h, VALUE d, VALUE pixels)

  511. {

  512.     if(CLASS_OF(d) != cDither)

  513.         rb_raise(rb_eArgError, "d is not a Caca::Dither");

  514.     Check_Type(pixels, T_STRING);

  515. 

  516.     caca_dither_bitmap(_SELF, NUM2INT(x), NUM2INT(y), NUM2INT(w), NUM2INT(h), DATA_PTR(d), StringValuePtr(pixels));

  517.     return self;

  518. }

  519. 

  520. /****/

  521. 

  522. get_int(frame_count)

  523. 

  524. static VALUE set_frame(VALUE self, VALUE id)

  525. {

  526.     if(caca_set_frame(_SELF, NUM2INT(id))<0)

  527.         rb_raise(rb_eArgError, "%s", strerror(errno));

  528. 

  529.     return self;

  530. }

  531. 

  532. static VALUE set_frame2(VALUE self, VALUE id)

  533. {

  534.     set_frame(self, id);

  535.     return self;

  536. }

  537. 

  538. static VALUE get_frame_name(VALUE self)

  539. {

  540.     return rb_str_new2(caca_get_frame_name(_SELF));

  541. }

  542. 

  543. static VALUE set_frame_name(VALUE self, VALUE name)

  544. {

  545.     if(caca_set_frame_name(_SELF, StringValuePtr(name))<0)

  546.         rb_raise(rb_eRuntimeError, "%s", strerror(errno));

  547. 

  548.     return self;

  549. }

  550. 

  551. static VALUE set_frame_name2(VALUE self, VALUE name)

  552. {

  553.     set_frame_name(self, name);

  554.     return self;

  555. }

  556. 

  557. static VALUE create_frame(VALUE self, VALUE id)

  558. {

  559.     if(caca_create_frame(_SELF, NUM2INT(id))<0) {

  560.         rb_raise(rb_eRuntimeError, "%s", strerror(errno));

  561.     }

  562.     return self;

  563. }

  564. 

  565. static VALUE free_frame(VALUE self, VALUE id)

  566. {

  567.     if(caca_free_frame(_SELF, NUM2INT(id))<0) {

  568.         rb_raise(rb_eArgError, "%s", strerror(errno));

  569.     }

  570.     return self;

  571. }

  572. 

  573. /****/

  574. 

  575. static VALUE render_canvas(VALUE self, VALUE font, VALUE width, VALUE height, VALUE pitch)

  576. {

  577.     void *buf;

  578.     caca_font_t *f;

  579.     VALUE b;

  580. 

  581.     if(CLASS_OF(font) != cFont)

  582.     {

  583.         rb_raise(rb_eArgError, "First argument is not a Caca::Font");

  584.     }

  585. 

  586.     buf = malloc(width*height*4);

  587.     if(buf == NULL)

  588.     {

  589.         rb_raise(rb_eNoMemError, "Out of memory");

  590.     }

  591. 

  592.     f = DATA_PTR(font);

  593.     caca_render_canvas(_SELF, f, buf, NUM2UINT(width), NUM2UINT(height), NUM2UINT(pitch));

  594. 

  595.     b = rb_str_new(buf, width*height*4);

  596.     free(buf);

  597.     return b;

  598. }

  599. 

  600. static VALUE import_from_memory(VALUE self, VALUE data, VALUE format)

  601. {

  602.     long int bytes;

  603.     bytes = caca_import_canvas_from_memory (_SELF, StringValuePtr(data), RSTRING_LEN(StringValue(data)), StringValuePtr(format));

  604.     if(bytes <= 0)

  605.         rb_raise(rb_eRuntimeError, "%s", strerror(errno));

  606. 

  607.     return self;

  608. }

  609. 

  610. static VALUE import_area_from_memory(VALUE self, VALUE x, VALUE y, VALUE data, VALUE format)

  611. {

  612.     long int bytes;

  613.     bytes = caca_import_area_from_memory (_SELF, NUM2INT(x), NUM2INT(y), StringValuePtr(data), RSTRING_LEN(StringValue(data)), StringValuePtr(format));

  614.     if(bytes <= 0)

  615.         rb_raise(rb_eRuntimeError, "%s", strerror(errno));

  616. 

  617.     return self;

  618. }

  619. 

  620. static VALUE import_from_file(VALUE self, VALUE filename, VALUE format)

  621. {

  622.     long int bytes;

  623.     bytes = caca_import_canvas_from_file (_SELF, StringValuePtr(filename), StringValuePtr(format));

  624.     if(bytes <= 0)

  625.         rb_raise(rb_eRuntimeError, "%s", strerror(errno));

  626. 

  627.     return self;

  628. }

  629. 

  630. static VALUE import_area_from_file(VALUE self, VALUE x, VALUE y, VALUE filename, VALUE format)

  631. {

  632.     long int bytes;

  633.     bytes = caca_import_area_from_file (_SELF, NUM2INT(x), NUM2INT(y), StringValuePtr(filename), StringValuePtr(format));

  634.     if(bytes <= 0)

  635.         rb_raise(rb_eRuntimeError, "%s", strerror(errno));

  636. 

  637.     return self;

  638. }

  639. 

  640. static VALUE export_area_to_memory(VALUE self, VALUE x, VALUE y, VALUE w, VALUE h, VALUE format)

  641. {

  642.     size_t bytes;

  643.     void *result;

  644.     VALUE ret;

  645.     result = caca_export_area_to_memory (_SELF, NUM2INT(x), NUM2INT(y), NUM2INT(w), NUM2INT(h), StringValuePtr(format), &bytes);

  646.     ret = rb_str_new(result, bytes);

  647.     free(result);

  648.     return ret;

  649. }

  650. 

  651. static VALUE export_to_memory(VALUE self, VALUE format)

  652. {

  653.     size_t bytes;

  654.     void *result;

  655.     VALUE ret;

  656.     result = caca_export_canvas_to_memory (_SELF, StringValuePtr(format), &bytes);

  657.     ret = rb_str_new(result, bytes);

  658.     free(result);

  659.     return ret;

  660. }

  661. 

  662. get_singleton_double_list(export)

  663. get_singleton_double_list(import)

  664. 

  665. /****/

  666. 

  667. simple_func(disable_dirty_rect)

  668. simple_func(enable_dirty_rect)

  669. get_int(dirty_rect_count)

  670. 

  671. static VALUE dirty_rect(VALUE self, VALUE n)

  672. {

  673.     int x, y, width, height;

  674.     VALUE ary;

  675.     ary = rb_ary_new();

  676.     caca_get_dirty_rect(_SELF, NUM2INT(n), &x, &y, &width, &height);

  677.     rb_ary_push(ary, INT2NUM(x));

  678.     rb_ary_push(ary, INT2NUM(y));

  679.     rb_ary_push(ary, INT2NUM(width));

  680.     rb_ary_push(ary, INT2NUM(height));

  681.     return ary;

  682. }

  683. 

  684. static VALUE dirty_rects(VALUE self)

  685. {

  686.     int n = caca_get_dirty_rect_count(_SELF), i;

  687.     VALUE ary;

  688.     ary = rb_ary_new();

  689.     for(i=0; i<n; i++)

  690.     {

  691.         rb_ary_push(ary, dirty_rect(self, INT2NUM(i)));

  692.     }

  693.     return ary;

  694. }

  695. 

  696. /*FIXME Handle an array for the rect */

  697. static VALUE add_dirty_rect(VALUE self, VALUE x, VALUE y, VALUE w, VALUE h)

  698. {

  699.     caca_add_dirty_rect(_SELF, NUM2INT(x), NUM2INT(y), NUM2INT(w), NUM2INT(h));

  700.     return self;

  701. }

  702. 

  703. static VALUE remove_dirty_rect(VALUE self, VALUE x, VALUE y, VALUE w, VALUE h)

  704. {

  705.     caca_remove_dirty_rect(_SELF, NUM2INT(x), NUM2INT(y), NUM2INT(w), NUM2INT(h));

  706.     return self;

  707. }

  708. 

  709. simple_func(clear_dirty_rect_list)

  710. 

  711. /****/

  712. 

  713. void Init_caca_canvas(VALUE mCaca)

  714. {

  715.     cCanvas = rb_define_class_under(mCaca, "Canvas", rb_cObject);

  716.     rb_define_alloc_func(cCanvas, canvas_alloc);

  717. 

  718.     rb_define_method(cCanvas, "initialize", canvas_initialize, 2);

  719.     rb_define_method(cCanvas, "width", get_canvas_width, 0);

  720.     rb_define_method(cCanvas, "width=", set_canvas_width, 1);

  721.     rb_define_method(cCanvas, "set_width", set_canvas_width2, 1);

  722.     rb_define_method(cCanvas, "height", get_canvas_height, 0);

  723.     rb_define_method(cCanvas, "height=", set_canvas_height, 1);

  724.     rb_define_method(cCanvas, "set_height", set_canvas_height2, 1);

  725.     rb_define_method(cCanvas, "set_size", set_canvas_size, 2);

  726. 

  727.     rb_define_method(cCanvas, "gotoxy", gotoxy, 2);

  728.     rb_define_method(cCanvas, "wherex", wherex, 0);

  729.     rb_define_method(cCanvas, "wherey", wherey, 0);

  730.     rb_define_method(cCanvas, "handle_x", get_canvas_handle_x, 0);

  731.     rb_define_method(cCanvas, "handle_y", get_canvas_handle_y, 0);

  732.     rb_define_method(cCanvas, "set_handle", set_canvas_handle, 2);

  733.     rb_define_method(cCanvas, "blit", blit, -1);

  734.     rb_define_method(cCanvas, "set_boundaries", set_canvas_boundaries, 4);

  735. 

  736.     rb_define_method(cCanvas, "clear", clear_canvas, 0);

  737. 

  738.     rb_define_method(cCanvas, "put_char", put_char, 3);

  739.     rb_define_method(cCanvas, "get_char", get_char, 2);

  740.     rb_define_method(cCanvas, "put_str", put_str, 3);

  741.     rb_define_method(cCanvas, "printf", cprintf, -1);

  742. 

  743.     rb_define_method(cCanvas, "get_attr", get_attr, 3);

  744.     rb_define_method(cCanvas, "attr=", set_attr, 1);

  745.     rb_define_method(cCanvas, "set_attr", set_attr2, 1);

  746.     rb_define_method(cCanvas, "put_attr", put_attr, 3);

  747.     rb_define_method(cCanvas, "set_color_ansi", set_color_ansi, 2);

  748.     rb_define_method(cCanvas, "set_color_argb", set_color_argb, 2);

  749. 

  750.     rb_define_method(cCanvas, "invert", invert, 0);

  751.     rb_define_method(cCanvas, "flip", flip, 0);

  752.     rb_define_method(cCanvas, "flop", flop, 0);

  753.     rb_define_method(cCanvas, "rotate_180", rotate_180, 0);

  754.     rb_define_method(cCanvas, "rotate_left", rotate_left, 0);

  755.     rb_define_method(cCanvas, "rotate_right", rotate_right, 0);

  756.     rb_define_method(cCanvas, "stretch_left", stretch_left, 0);

  757.     rb_define_method(cCanvas, "stretch_right", stretch_right, 0);

  758. 

  759.     rb_define_method(cCanvas, "draw_line", draw_line, 5);

  760.     rb_define_method(cCanvas, "draw_polyline", draw_polyline, 2);

  761.     rb_define_method(cCanvas, "draw_thin_line", draw_thin_line, 4);

  762.     rb_define_method(cCanvas, "draw_thin_polyline", draw_thin_polyline, 1);

  763.     rb_define_method(cCanvas, "draw_circle", draw_circle, 4);

  764.     rb_define_method(cCanvas, "draw_ellipse", draw_ellipse, 5);

  765.     rb_define_method(cCanvas, "draw_thin_ellipse", draw_thin_ellipse, 4);

  766.     rb_define_method(cCanvas, "fill_ellipse", fill_ellipse, 5);

  767.     rb_define_method(cCanvas, "draw_box", draw_box, 5);

  768.     rb_define_method(cCanvas, "draw_thin_box", draw_thin_box, 4);

  769.     rb_define_method(cCanvas, "draw_cp437_box", draw_cp437_box, 4);

  770.     rb_define_method(cCanvas, "fill_box", fill_box, 5);

  771.     rb_define_method(cCanvas, "draw_triangle", draw_triangle, 7);

  772.     rb_define_method(cCanvas, "draw_thin_triangle", draw_thin_triangle, 6);

  773.     rb_define_method(cCanvas, "fill_triangle", fill_triangle, 7);

  774.     rb_define_method(cCanvas, "fill_triangle_textured", fill_triangle_textured, 4);

  775.     rb_define_method(cCanvas, "dither_bitmap", dither_bitmap, 6);

  776. 

  777.     rb_define_method(cCanvas, "frame_count", get_frame_count, 0);

  778.     rb_define_method(cCanvas, "frame=", set_frame, 1);

  779.     rb_define_method(cCanvas, "set_frame", set_frame2, 1);

  780.     rb_define_method(cCanvas, "frame_name", get_frame_name, 0);

  781.     rb_define_method(cCanvas, "frame_name=", set_frame_name, 1);

  782.     rb_define_method(cCanvas, "set_frame_name", set_frame_name2, 1);

  783.     rb_define_method(cCanvas, "create_frame", create_frame, 1);

  784.     rb_define_method(cCanvas, "free_frame", free_frame, 1);

  785. 

  786.     rb_define_method(cCanvas, "render", render_canvas, 4);

  787.     rb_define_method(cCanvas, "import_from_memory", import_from_memory, 2);

  788.     rb_define_method(cCanvas, "import_area_from_memory", import_area_from_memory, 4);

  789.     rb_define_method(cCanvas, "import_from_file", import_from_file, 2);

  790.     rb_define_method(cCanvas, "import_area_from_file", import_area_from_file, 4);

  791.     rb_define_method(cCanvas, "export_to_memory", export_to_memory, 1);

  792.     rb_define_method(cCanvas, "export_area_to_memory", export_area_to_memory, 5);

  793.     rb_define_singleton_method(cCanvas, "export_list", export_list, 0);

  794.     rb_define_singleton_method(cCanvas, "import_list", import_list, 0);

  795. 

  796.     rb_define_method(cCanvas, "disable_dirty_rect", disable_dirty_rect, 0);

  797.     rb_define_method(cCanvas, "enable_dirty_rect", enable_dirty_rect, 0);

  798.     rb_define_method(cCanvas, "dirty_rect_count", get_dirty_rect_count, 0);

  799.     rb_define_method(cCanvas, "dirty_rect", dirty_rect, 1);

  800.     rb_define_method(cCanvas, "dirty_rects", dirty_rects, 0);

  801.     rb_define_method(cCanvas, "add_dirty_rect", add_dirty_rect, 4);

  802.     rb_define_method(cCanvas, "remove_dirty_rect", remove_dirty_rect, 4);

  803.     rb_define_method(cCanvas, "clear_dirty_rect_list", clear_dirty_rect_list, 0);

  804. 

  805. }