1 /*
2 * Nuklear - v1.40.8 - public domain
3 * no warrenty implied; use at your own risk.
4 * authored from 2015-2017 by Micha Mettke
5 */
6 /*
7 * ==============================================================
8 *
9 * API
10 *
11 * ===============================================================
12 */
13 #ifndef NK_XLIB_H_
14 #define NK_XLIB_H_
15
16 #include <X11/Xlib.h>
17
18 typedef struct XFont XFont;
19 #ifdef NK_XLIB_USE_XFT
20 NK_API struct nk_context* nk_xlib_init(XFont*, Display*, int scrn, Window root, Visual *vis, Colormap cmap, unsigned w, unsigned h);
21 #else
22 NK_API struct nk_context* nk_xlib_init(XFont*, Display*, int scrn, Window root, unsigned w, unsigned h);
23 #endif
24 NK_API int nk_xlib_handle_event(Display*, int scrn, Window, XEvent*);
25 NK_API void nk_xlib_render(Drawable screen, struct nk_color clear);
26 NK_API void nk_xlib_shutdown(void);
27 NK_API void nk_xlib_set_font(XFont*);
28 NK_API void nk_xlib_push_font(XFont*);
29 NK_API void nk_xlib_paste(nk_handle, struct nk_text_edit*);
30 NK_API void nk_xlib_copy(nk_handle, const char*, int len);
31
32 /* Image */
33 #ifdef NK_XLIB_INCLUDE_STB_IMAGE
34 NK_API struct nk_image nk_xsurf_load_image_from_file(char const *filename);
35 NK_API struct nk_image nk_xsurf_load_image_from_memory(const void *membuf, nk_uint membufSize);
36 #endif
37
38 /* Font */
39 NK_API XFont* nk_xfont_create(Display *dpy, const char *name);
40 NK_API void nk_xfont_del(Display *dpy, XFont *font);
41
42 #endif
43 /*
44 * ==============================================================
45 *
46 * IMPLEMENTATION
47 *
48 * ===============================================================
49 */
50 #ifdef NK_XLIB_IMPLEMENTATION
51 #include <X11/Xlib.h>
52 #include <X11/Xutil.h>
53 #include <X11/Xresource.h>
54 #include <X11/Xlocale.h>
55 #include <X11/Xatom.h>
56
57 #ifdef NK_XLIB_USE_XFT
58 #include <X11/Xft/Xft.h>
59 #endif
60
61 #include <sys/time.h>
62 #include <unistd.h>
63 #include <time.h>
64
65
66 #ifdef NK_XLIB_IMPLEMENT_STB_IMAGE
67 #define STB_IMAGE_IMPLEMENTATION
68 #endif
69
70 #ifdef NK_XLIB_INCLUDE_STB_IMAGE
71 #include "../../example/stb_image.h"
72 #endif
73
74
75 #ifndef NK_X11_DOUBLE_CLICK_LO
76 #define NK_X11_DOUBLE_CLICK_LO 20
77 #endif
78 #ifndef NK_X11_DOUBLE_CLICK_HI
79 #define NK_X11_DOUBLE_CLICK_HI 200
80 #endif
81
82 typedef struct XSurface XSurface;
83 typedef struct XImageWithAlpha XImageWithAlpha;
84 struct XFont {
85 int ascent;
86 int descent;
87 int height;
88 #ifdef NK_XLIB_USE_XFT
89 XftFont * ft;
90 #else
91 XFontSet set;
92 XFontStruct *xfont;
93 #endif
94 struct nk_user_font handle;
95 };
96 struct XSurface {
97 GC gc;
98 Display *dpy;
99 int screen;
100 Window root;
101 Drawable drawable;
102 unsigned int w, h;
103 #ifdef NK_XLIB_USE_XFT
104 XftDraw * ftdraw;
105 #endif
106 };
107 struct XImageWithAlpha {
108 XImage* ximage;
109 GC clipMaskGC;
110 Pixmap clipMask;
111 };
112 static struct {
113 char *clipboard_data;
114 int clipboard_len;
115 struct nk_text_edit* clipboard_target;
116
117 Atom xa_clipboard;
118 Atom xa_targets;
119 Atom xa_text;
120 Atom xa_utf8_string;
121
122 struct nk_context ctx;
123 struct XSurface *surf;
124 Cursor cursor;
125 Display *dpy;
126 Window root;
127 #ifdef NK_XLIB_USE_XFT
128 Visual *vis;
129 Colormap cmap;
130 #endif
131 long last_button_click;
132 } xlib;
133
134 NK_INTERN long
nk_timestamp(void)135 nk_timestamp(void)
136 {
137 struct timeval tv;
138 if (gettimeofday(&tv, NULL) < 0) return 0;
139 return (long)((long)tv.tv_sec * 1000 + (long)tv.tv_usec/1000);
140 }
141
142 NK_INTERN unsigned long
nk_color_from_byte(const nk_byte * c)143 nk_color_from_byte(const nk_byte *c)
144 {
145 unsigned long res = 0;
146 res |= (unsigned long)c[0] << 16;
147 res |= (unsigned long)c[1] << 8;
148 res |= (unsigned long)c[2] << 0;
149 return (res);
150 }
151
152 NK_INTERN XSurface*
nk_xsurf_create(int screen,unsigned int w,unsigned int h)153 nk_xsurf_create(int screen, unsigned int w, unsigned int h)
154 {
155 XSurface *surface = (XSurface*)calloc(1, sizeof(XSurface));
156 surface->w = w;
157 surface->h = h;
158 surface->dpy = xlib.dpy;
159 surface->screen = screen;
160 surface->root = xlib.root;
161 surface->gc = XCreateGC(xlib.dpy, xlib.root, 0, NULL);
162 XSetLineAttributes(xlib.dpy, surface->gc, 1, LineSolid, CapButt, JoinMiter);
163 surface->drawable = XCreatePixmap(xlib.dpy, xlib.root, w, h,
164 (unsigned int)DefaultDepth(xlib.dpy, screen));
165 #ifdef NK_XLIB_USE_XFT
166 surface->ftdraw = XftDrawCreate(xlib.dpy, surface->drawable,
167 xlib.vis, xlib.cmap);
168 #endif
169 return surface;
170 }
171
172 NK_INTERN void
nk_xsurf_resize(XSurface * surf,unsigned int w,unsigned int h)173 nk_xsurf_resize(XSurface *surf, unsigned int w, unsigned int h)
174 {
175 if(!surf) return;
176 if (surf->w == w && surf->h == h) return;
177 surf->w = w; surf->h = h;
178 if(surf->drawable) XFreePixmap(surf->dpy, surf->drawable);
179 surf->drawable = XCreatePixmap(surf->dpy, surf->root, w, h,
180 (unsigned int)DefaultDepth(surf->dpy, surf->screen));
181 #ifdef NK_XLIB_USE_XFT
182 XftDrawChange(surf->ftdraw, surf->drawable);
183 #endif
184 return;
185 }
186
187 NK_INTERN void
nk_xsurf_scissor(XSurface * surf,float x,float y,float w,float h)188 nk_xsurf_scissor(XSurface *surf, float x, float y, float w, float h)
189 {
190 XRectangle clip_rect;
191 clip_rect.x = (short)(x-1);
192 clip_rect.y = (short)(y-1);
193 clip_rect.width = (unsigned short)(w+2);
194 clip_rect.height = (unsigned short)(h+2);
195 XSetClipRectangles(surf->dpy, surf->gc, 0, 0, &clip_rect, 1, Unsorted);
196
197 #ifdef NK_XLIB_USE_XFT
198 XftDrawSetClipRectangles(surf->ftdraw, 0, 0, &clip_rect, 1);
199 #endif
200 return;
201 }
202
203 NK_INTERN void
nk_xsurf_stroke_line(XSurface * surf,short x0,short y0,short x1,short y1,unsigned int line_thickness,struct nk_color col)204 nk_xsurf_stroke_line(XSurface *surf, short x0, short y0, short x1,
205 short y1, unsigned int line_thickness, struct nk_color col)
206 {
207 unsigned long c = nk_color_from_byte(&col.r);
208 XSetForeground(surf->dpy, surf->gc, c);
209 XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
210 XDrawLine(surf->dpy, surf->drawable, surf->gc, (int)x0, (int)y0, (int)x1, (int)y1);
211 XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
212 }
213
214 NK_INTERN void
nk_xsurf_stroke_rect(XSurface * surf,short x,short y,unsigned short w,unsigned short h,unsigned short r,unsigned short line_thickness,struct nk_color col)215 nk_xsurf_stroke_rect(XSurface* surf, short x, short y, unsigned short w,
216 unsigned short h, unsigned short r, unsigned short line_thickness, struct nk_color col)
217 {
218 unsigned long c = nk_color_from_byte(&col.r);
219 XSetForeground(surf->dpy, surf->gc, c);
220 XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
221 if (r == 0) {XDrawRectangle(surf->dpy, surf->drawable, surf->gc, x, y, w, h);return;}
222
223 {short xc = x + r;
224 short yc = y + r;
225 short wc = (short)(w - 2 * r);
226 short hc = (short)(h - 2 * r);
227
228 XDrawLine(surf->dpy, surf->drawable, surf->gc, xc, y, xc+wc, y);
229 XDrawLine(surf->dpy, surf->drawable, surf->gc, x+w, yc, x+w, yc+hc);
230 XDrawLine(surf->dpy, surf->drawable, surf->gc, xc, y+h, xc+wc, y+h);
231 XDrawLine(surf->dpy, surf->drawable, surf->gc, x, yc, x, yc+hc);
232
233 XDrawArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, y,
234 (unsigned)r*2, (unsigned)r*2, 0 * 64, 90 * 64);
235 XDrawArc(surf->dpy, surf->drawable, surf->gc, x, y,
236 (unsigned)r*2, (unsigned)r*2, 90 * 64, 90 * 64);
237 XDrawArc(surf->dpy, surf->drawable, surf->gc, x, yc + hc - r,
238 (unsigned)r*2, (unsigned)2*r, 180 * 64, 90 * 64);
239 XDrawArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, yc + hc - r,
240 (unsigned)r*2, (unsigned)2*r, -90 * 64, 90 * 64);}
241 XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
242 }
243
244 NK_INTERN void
nk_xsurf_fill_rect(XSurface * surf,short x,short y,unsigned short w,unsigned short h,unsigned short r,struct nk_color col)245 nk_xsurf_fill_rect(XSurface* surf, short x, short y, unsigned short w,
246 unsigned short h, unsigned short r, struct nk_color col)
247 {
248 unsigned long c = nk_color_from_byte(&col.r);
249 XSetForeground(surf->dpy, surf->gc, c);
250 if (r == 0) {XFillRectangle(surf->dpy, surf->drawable, surf->gc, x, y, w, h); return;}
251
252 {short xc = x + r;
253 short yc = y + r;
254 short wc = (short)(w - 2 * r);
255 short hc = (short)(h - 2 * r);
256
257 XPoint pnts[12];
258 pnts[0].x = x;
259 pnts[0].y = yc;
260 pnts[1].x = xc;
261 pnts[1].y = yc;
262 pnts[2].x = xc;
263 pnts[2].y = y;
264
265 pnts[3].x = xc + wc;
266 pnts[3].y = y;
267 pnts[4].x = xc + wc;
268 pnts[4].y = yc;
269 pnts[5].x = x + w;
270 pnts[5].y = yc;
271
272 pnts[6].x = x + w;
273 pnts[6].y = yc + hc;
274 pnts[7].x = xc + wc;
275 pnts[7].y = yc + hc;
276 pnts[8].x = xc + wc;
277 pnts[8].y = y + h;
278
279 pnts[9].x = xc;
280 pnts[9].y = y + h;
281 pnts[10].x = xc;
282 pnts[10].y = yc + hc;
283 pnts[11].x = x;
284 pnts[11].y = yc + hc;
285
286 XFillPolygon(surf->dpy, surf->drawable, surf->gc, pnts, 12, Convex, CoordModeOrigin);
287 XFillArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, y,
288 (unsigned)r*2, (unsigned)r*2, 0 * 64, 90 * 64);
289 XFillArc(surf->dpy, surf->drawable, surf->gc, x, y,
290 (unsigned)r*2, (unsigned)r*2, 90 * 64, 90 * 64);
291 XFillArc(surf->dpy, surf->drawable, surf->gc, x, yc + hc - r,
292 (unsigned)r*2, (unsigned)2*r, 180 * 64, 90 * 64);
293 XFillArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, yc + hc - r,
294 (unsigned)r*2, (unsigned)2*r, -90 * 64, 90 * 64);}
295 }
296
297 NK_INTERN void
nk_xsurf_fill_triangle(XSurface * surf,short x0,short y0,short x1,short y1,short x2,short y2,struct nk_color col)298 nk_xsurf_fill_triangle(XSurface *surf, short x0, short y0, short x1,
299 short y1, short x2, short y2, struct nk_color col)
300 {
301 XPoint pnts[3];
302 unsigned long c = nk_color_from_byte(&col.r);
303 pnts[0].x = (short)x0;
304 pnts[0].y = (short)y0;
305 pnts[1].x = (short)x1;
306 pnts[1].y = (short)y1;
307 pnts[2].x = (short)x2;
308 pnts[2].y = (short)y2;
309 XSetForeground(surf->dpy, surf->gc, c);
310 XFillPolygon(surf->dpy, surf->drawable, surf->gc, pnts, 3, Convex, CoordModeOrigin);
311 }
312
313 NK_INTERN void
nk_xsurf_stroke_triangle(XSurface * surf,short x0,short y0,short x1,short y1,short x2,short y2,unsigned short line_thickness,struct nk_color col)314 nk_xsurf_stroke_triangle(XSurface *surf, short x0, short y0, short x1,
315 short y1, short x2, short y2, unsigned short line_thickness, struct nk_color col)
316 {
317 unsigned long c = nk_color_from_byte(&col.r);
318 XSetForeground(surf->dpy, surf->gc, c);
319 XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
320 XDrawLine(surf->dpy, surf->drawable, surf->gc, x0, y0, x1, y1);
321 XDrawLine(surf->dpy, surf->drawable, surf->gc, x1, y1, x2, y2);
322 XDrawLine(surf->dpy, surf->drawable, surf->gc, x2, y2, x0, y0);
323 XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
324 }
325
326 NK_INTERN void
nk_xsurf_fill_polygon(XSurface * surf,const struct nk_vec2i * pnts,int count,struct nk_color col)327 nk_xsurf_fill_polygon(XSurface *surf, const struct nk_vec2i *pnts, int count,
328 struct nk_color col)
329 {
330 int i = 0;
331 #define MAX_POINTS 128
332 XPoint xpnts[MAX_POINTS];
333 unsigned long c = nk_color_from_byte(&col.r);
334 XSetForeground(surf->dpy, surf->gc, c);
335 for (i = 0; i < count && i < MAX_POINTS; ++i) {
336 xpnts[i].x = pnts[i].x;
337 xpnts[i].y = pnts[i].y;
338 }
339 XFillPolygon(surf->dpy, surf->drawable, surf->gc, xpnts, count, Convex, CoordModeOrigin);
340 #undef MAX_POINTS
341 }
342
343 NK_INTERN void
nk_xsurf_stroke_polygon(XSurface * surf,const struct nk_vec2i * pnts,int count,unsigned short line_thickness,struct nk_color col)344 nk_xsurf_stroke_polygon(XSurface *surf, const struct nk_vec2i *pnts, int count,
345 unsigned short line_thickness, struct nk_color col)
346 {
347 int i = 0;
348 unsigned long c = nk_color_from_byte(&col.r);
349 XSetForeground(surf->dpy, surf->gc, c);
350 XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
351 for (i = 1; i < count; ++i)
352 XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[i-1].x, pnts[i-1].y, pnts[i].x, pnts[i].y);
353 XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[count-1].x, pnts[count-1].y, pnts[0].x, pnts[0].y);
354 XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
355 }
356
357 NK_INTERN void
nk_xsurf_stroke_polyline(XSurface * surf,const struct nk_vec2i * pnts,int count,unsigned short line_thickness,struct nk_color col)358 nk_xsurf_stroke_polyline(XSurface *surf, const struct nk_vec2i *pnts,
359 int count, unsigned short line_thickness, struct nk_color col)
360 {
361 int i = 0;
362 unsigned long c = nk_color_from_byte(&col.r);
363 XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
364 XSetForeground(surf->dpy, surf->gc, c);
365 for (i = 0; i < count-1; ++i)
366 XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[i].x, pnts[i].y, pnts[i+1].x, pnts[i+1].y);
367 XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
368 }
369
370 NK_INTERN void
nk_xsurf_fill_circle(XSurface * surf,short x,short y,unsigned short w,unsigned short h,struct nk_color col)371 nk_xsurf_fill_circle(XSurface *surf, short x, short y, unsigned short w,
372 unsigned short h, struct nk_color col)
373 {
374 unsigned long c = nk_color_from_byte(&col.r);
375 XSetForeground(surf->dpy, surf->gc, c);
376 XFillArc(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y,
377 (unsigned)w, (unsigned)h, 0, 360 * 64);
378 }
379
380 NK_INTERN void
nk_xsurf_stroke_circle(XSurface * surf,short x,short y,unsigned short w,unsigned short h,unsigned short line_thickness,struct nk_color col)381 nk_xsurf_stroke_circle(XSurface *surf, short x, short y, unsigned short w,
382 unsigned short h, unsigned short line_thickness, struct nk_color col)
383 {
384 unsigned long c = nk_color_from_byte(&col.r);
385 XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
386 XSetForeground(surf->dpy, surf->gc, c);
387 XDrawArc(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y,
388 (unsigned)w, (unsigned)h, 0, 360 * 64);
389 XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
390 }
391
392 NK_INTERN void
nk_xsurf_stroke_curve(XSurface * surf,struct nk_vec2i p1,struct nk_vec2i p2,struct nk_vec2i p3,struct nk_vec2i p4,unsigned int num_segments,unsigned short line_thickness,struct nk_color col)393 nk_xsurf_stroke_curve(XSurface *surf, struct nk_vec2i p1,
394 struct nk_vec2i p2, struct nk_vec2i p3, struct nk_vec2i p4,
395 unsigned int num_segments, unsigned short line_thickness, struct nk_color col)
396 {
397 unsigned int i_step;
398 float t_step;
399 struct nk_vec2i last = p1;
400
401 XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
402 num_segments = NK_MAX(num_segments, 1);
403 t_step = 1.0f/(float)num_segments;
404 for (i_step = 1; i_step <= num_segments; ++i_step) {
405 float t = t_step * (float)i_step;
406 float u = 1.0f - t;
407 float w1 = u*u*u;
408 float w2 = 3*u*u*t;
409 float w3 = 3*u*t*t;
410 float w4 = t * t *t;
411 float x = w1 * p1.x + w2 * p2.x + w3 * p3.x + w4 * p4.x;
412 float y = w1 * p1.y + w2 * p2.y + w3 * p3.y + w4 * p4.y;
413 nk_xsurf_stroke_line(surf, last.x, last.y, (short)x, (short)y, line_thickness,col);
414 last.x = (short)x; last.y = (short)y;
415 }
416 XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
417 }
418
419 NK_INTERN void
nk_xsurf_draw_text(XSurface * surf,short x,short y,unsigned short w,unsigned short h,const char * text,int len,XFont * font,struct nk_color cbg,struct nk_color cfg)420 nk_xsurf_draw_text(XSurface *surf, short x, short y, unsigned short w, unsigned short h,
421 const char *text, int len, XFont *font, struct nk_color cbg, struct nk_color cfg)
422 {
423 #ifdef NK_XLIB_USE_XFT
424 XRenderColor xrc;
425 XftColor color;
426 #else
427 unsigned long fg = nk_color_from_byte(&cfg.r);
428 #endif
429 unsigned long bg = nk_color_from_byte(&cbg.r);
430 int tx, ty;
431
432 XSetForeground(surf->dpy, surf->gc, bg);
433 XFillRectangle(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y, (unsigned)w, (unsigned)h);
434 if(!text || !font || !len) return;
435
436 tx = (int)x;
437 ty = (int)y + font->ascent;
438 #ifdef NK_XLIB_USE_XFT
439 xrc.red = cfg.r * 257;
440 xrc.green = cfg.g * 257;
441 xrc.blue = cfg.b * 257;
442 xrc.alpha = cfg.a * 257;
443 XftColorAllocValue(surf->dpy, xlib.vis, xlib.cmap, &xrc, &color);
444 XftDrawStringUtf8(surf->ftdraw, &color, font->ft, tx, ty, (FcChar8*)text, len);
445 XftColorFree(surf->dpy, xlib.vis, xlib.cmap, &color);
446 #else
447 XSetForeground(surf->dpy, surf->gc, fg);
448 if(font->set) XmbDrawString(surf->dpy,surf->drawable, font->set, surf->gc, tx, ty, (const char*)text, (int)len);
449 else XDrawString(surf->dpy, surf->drawable, surf->gc, tx, ty, (const char*)text, (int)len);
450 #endif
451 return;
452 }
453
454
455 #ifdef NK_XLIB_INCLUDE_STB_IMAGE
456 NK_INTERN struct nk_image
nk_stbi_image_to_xsurf(unsigned char * data,int width,int height,int channels)457 nk_stbi_image_to_xsurf(unsigned char *data, int width, int height, int channels) {
458 XSurface *surf = xlib.surf;
459 struct nk_image img;
460 int bpl = channels;
461 long i, isize = width*height*channels;
462 XImageWithAlpha *aimage = (XImageWithAlpha*)calloc( 1, sizeof(XImageWithAlpha) );
463 int depth = DefaultDepth(surf->dpy, surf->screen);
464 if (data == NULL) return nk_image_id(0);
465 if (aimage == NULL) return nk_image_id(0);
466
467 switch (depth){
468 case 24:
469 bpl = 4;
470 break;
471 case 16:
472 case 15:
473 bpl = 2;
474 break;
475 default:
476 bpl = 1;
477 break;
478 }
479
480 /* rgba to bgra */
481 if (channels >= 3){
482 for (i=0; i < isize; i += channels) {
483 unsigned char red = data[i+2];
484 unsigned char blue = data[i];
485 data[i] = red;
486 data[i+2] = blue;
487 }
488 }
489
490 if (channels == 4){
491 const unsigned alpha_treshold = 127;
492 aimage->clipMask = XCreatePixmap(surf->dpy, surf->drawable, width, height, 1);
493
494 if( aimage->clipMask ){
495 aimage->clipMaskGC = XCreateGC(surf->dpy, aimage->clipMask, 0, 0);
496 XSetForeground(surf->dpy, aimage->clipMaskGC, BlackPixel(surf->dpy, surf->screen));
497 XFillRectangle(surf->dpy, aimage->clipMask, aimage->clipMaskGC, 0, 0, width, height);
498
499 XSetForeground(surf->dpy, aimage->clipMaskGC, WhitePixel(surf->dpy, surf->screen));
500 for (i=0; i < isize; i += channels){
501 unsigned char alpha = data[i+3];
502 int div = i / channels;
503 int x = div % width;
504 int y = div / width;
505 if( alpha > alpha_treshold )
506 XDrawPoint(surf->dpy, aimage->clipMask, aimage->clipMaskGC, x, y);
507 }
508 }
509 }
510
511 aimage->ximage = XCreateImage(surf->dpy,
512 CopyFromParent, depth,
513 ZPixmap, 0,
514 (char*)data,
515 width, height,
516 bpl*8, bpl * width);
517 img = nk_image_ptr( (void*)aimage);
518 img.h = height;
519 img.w = width;
520 return img;
521 }
522
523 NK_API struct nk_image
nk_xsurf_load_image_from_memory(const void * membuf,nk_uint membufSize)524 nk_xsurf_load_image_from_memory(const void *membuf, nk_uint membufSize)
525 {
526 int x,y,n;
527 unsigned char *data;
528 data = stbi_load_from_memory(membuf, membufSize, &x, &y, &n, 0);
529 return nk_stbi_image_to_xsurf(data, x, y, n);
530 }
531
532 NK_API struct nk_image
nk_xsurf_load_image_from_file(char const * filename)533 nk_xsurf_load_image_from_file(char const *filename)
534 {
535 int x,y,n;
536 unsigned char *data;
537 data = stbi_load(filename, &x, &y, &n, 0);
538 return nk_stbi_image_to_xsurf(data, x, y, n);
539 }
540 #endif /* NK_XLIB_INCLUDE_STB_IMAGE */
541
542 NK_INTERN void
nk_xsurf_draw_image(XSurface * surf,short x,short y,unsigned short w,unsigned short h,struct nk_image img,struct nk_color col)543 nk_xsurf_draw_image(XSurface *surf, short x, short y, unsigned short w, unsigned short h,
544 struct nk_image img, struct nk_color col)
545 {
546 XImageWithAlpha *aimage = img.handle.ptr;
547
548 NK_UNUSED(col);
549
550 if (aimage){
551 if (aimage->clipMask){
552 XSetClipMask(surf->dpy, surf->gc, aimage->clipMask);
553 XSetClipOrigin(surf->dpy, surf->gc, x, y);
554 }
555 XPutImage(surf->dpy, surf->drawable, surf->gc, aimage->ximage, 0, 0, x, y, w, h);
556 XSetClipMask(surf->dpy, surf->gc, None);
557 }
558 }
559
560 void
nk_xsurf_image_free(struct nk_image * image)561 nk_xsurf_image_free(struct nk_image* image)
562 {
563 XSurface *surf = xlib.surf;
564 XImageWithAlpha *aimage = image->handle.ptr;
565 if (!aimage) return;
566 XDestroyImage(aimage->ximage);
567 XFreePixmap(surf->dpy, aimage->clipMask);
568 XFreeGC(surf->dpy, aimage->clipMaskGC);
569 free(aimage);
570 }
571
572
573 NK_INTERN void
nk_xsurf_clear(XSurface * surf,unsigned long color)574 nk_xsurf_clear(XSurface *surf, unsigned long color)
575 {
576 XSetForeground(surf->dpy, surf->gc, color);
577 XFillRectangle(surf->dpy, surf->drawable, surf->gc, 0, 0, surf->w, surf->h);
578 }
579
580 NK_INTERN void
nk_xsurf_blit(Drawable target,XSurface * surf,unsigned int w,unsigned int h)581 nk_xsurf_blit(Drawable target, XSurface *surf, unsigned int w, unsigned int h)
582 {
583 XCopyArea(surf->dpy, surf->drawable, target, surf->gc, 0, 0, w, h, 0, 0);
584 }
585
586 NK_INTERN void
nk_xsurf_del(XSurface * surf)587 nk_xsurf_del(XSurface *surf)
588 {
589 #ifdef NK_XLIB_USE_XFT
590 XftDrawDestroy(surf->ftdraw);
591 #endif
592 XFreePixmap(surf->dpy, surf->drawable);
593 XFreeGC(surf->dpy, surf->gc);
594 free(surf);
595 }
596
597 NK_API XFont*
nk_xfont_create(Display * dpy,const char * name)598 nk_xfont_create(Display *dpy, const char *name)
599 {
600 #ifdef NK_XLIB_USE_XFT
601 XFont *font = (XFont*)calloc(1, sizeof(XFont));
602 font->ft = XftFontOpenName(dpy, XDefaultScreen(dpy), name);
603 if (!font->ft) {
604 fprintf(stderr, "missing font: %s\n", name);
605 return font;
606 }
607 font->ascent = font->ft->ascent;
608 font->descent = font->ft->descent;
609 font->height = font->ft->height;
610 #else
611 int n;
612 char *def, **missing;
613 XFont *font = (XFont*)calloc(1, sizeof(XFont));
614 font->set = XCreateFontSet(dpy, name, &missing, &n, &def);
615 if(missing) {
616 while(n--)
617 fprintf(stderr, "missing fontset: %s\n", missing[n]);
618 XFreeStringList(missing);
619 }
620 if(font->set) {
621 XFontStruct **xfonts;
622 char **font_names;
623 XExtentsOfFontSet(font->set);
624 n = XFontsOfFontSet(font->set, &xfonts, &font_names);
625 while(n--) {
626 font->ascent = NK_MAX(font->ascent, (*xfonts)->ascent);
627 font->descent = NK_MAX(font->descent,(*xfonts)->descent);
628 xfonts++;
629 }
630 } else {
631 if(!(font->xfont = XLoadQueryFont(dpy, name))
632 && !(font->xfont = XLoadQueryFont(dpy, "fixed"))) {
633 free(font);
634 return 0;
635 }
636 font->ascent = font->xfont->ascent;
637 font->descent = font->xfont->descent;
638 }
639 font->height = font->ascent + font->descent;
640 #endif
641 return font;
642 }
643
644 NK_INTERN float
nk_xfont_get_text_width(nk_handle handle,float height,const char * text,int len)645 nk_xfont_get_text_width(nk_handle handle, float height, const char *text, int len)
646 {
647 XFont *font = (XFont*)handle.ptr;
648
649 #ifdef NK_XLIB_USE_XFT
650 XGlyphInfo g;
651
652 NK_UNUSED(height);
653
654 if(!font || !text)
655 return 0;
656
657 XftTextExtentsUtf8(xlib.dpy, font->ft, (FcChar8*)text, len, &g);
658 return g.xOff;
659 #else
660 XRectangle r;
661
662 NK_UNUSED(height);
663
664 if(!font || !text)
665 return 0;
666
667 if(font->set) {
668 XmbTextExtents(font->set, (const char*)text, len, NULL, &r);
669 return (float)r.width;
670 } else{
671 int w = XTextWidth(font->xfont, (const char*)text, len);
672 return (float)w;
673 }
674 #endif
675 }
676
677 NK_API void
nk_xfont_del(Display * dpy,XFont * font)678 nk_xfont_del(Display *dpy, XFont *font)
679 {
680 if(!font) return;
681 #ifdef NK_XLIB_USE_XFT
682 XftFontClose(dpy, font->ft);
683 #else
684 if(font->set)
685 XFreeFontSet(dpy, font->set);
686 else
687 XFreeFont(dpy, font->xfont);
688 #endif
689 free(font);
690 }
691
692 NK_API struct nk_context*
nk_xlib_init(XFont * xfont,Display * dpy,int screen,Window root,Visual * vis,Colormap cmap,unsigned int w,unsigned int h)693 nk_xlib_init(XFont *xfont, Display *dpy, int screen, Window root,
694 #ifdef NK_XLIB_USE_XFT
695 Visual *vis, Colormap cmap,
696 #endif
697 unsigned int w, unsigned int h)
698 {
699 struct nk_user_font *font = &xfont->handle;
700 font->userdata = nk_handle_ptr(xfont);
701 font->height = (float)xfont->height;
702 font->width = nk_xfont_get_text_width;
703 xlib.dpy = dpy;
704 xlib.root = root;
705 #ifdef NK_XLIB_USE_XFT
706 xlib.vis = vis;
707 xlib.cmap = cmap;
708 #endif
709
710 if (!setlocale(LC_ALL,"")) return 0;
711 if (!XSupportsLocale()) return 0;
712 if (!XSetLocaleModifiers("@im=none")) return 0;
713
714 xlib.xa_clipboard = XInternAtom(dpy, "CLIPBOARD", False);
715 xlib.xa_targets = XInternAtom(dpy, "TARGETS", False);
716 xlib.xa_text = XInternAtom(dpy, "TEXT", False);
717 xlib.xa_utf8_string = XInternAtom(dpy, "UTF8_STRING", False);
718
719 /* create invisible cursor */
720 {static XColor dummy; char data[1] = {0};
721 Pixmap blank = XCreateBitmapFromData(dpy, root, data, 1, 1);
722 if (blank == None) return 0;
723 xlib.cursor = XCreatePixmapCursor(dpy, blank, blank, &dummy, &dummy, 0, 0);
724 XFreePixmap(dpy, blank);}
725 xlib.surf = nk_xsurf_create(screen, w, h);
726 nk_init_default(&xlib.ctx, font);
727 return &xlib.ctx;
728 }
729
730 NK_API void
nk_xlib_set_font(XFont * xfont)731 nk_xlib_set_font(XFont *xfont)
732 {
733 struct nk_user_font *font = &xfont->handle;
734 font->userdata = nk_handle_ptr(xfont);
735 font->height = (float)xfont->height;
736 font->width = nk_xfont_get_text_width;
737 nk_style_set_font(&xlib.ctx, font);
738 }
739
740 NK_API void
nk_xlib_push_font(XFont * xfont)741 nk_xlib_push_font(XFont *xfont)
742 {
743 struct nk_user_font *font = &xfont->handle;
744 font->userdata = nk_handle_ptr(xfont);
745 font->height = (float)xfont->height;
746 font->width = nk_xfont_get_text_width;
747 nk_style_push_font(&xlib.ctx, font);
748 }
749
750 NK_API void
nk_xlib_paste(nk_handle handle,struct nk_text_edit * edit)751 nk_xlib_paste(nk_handle handle, struct nk_text_edit* edit)
752 {
753 NK_UNUSED(handle);
754 /* Paste in X is asynchronous, so can not use a temporary text edit */
755 NK_ASSERT(edit != &xlib.ctx.text_edit && "Paste not supported for temporary editors");
756 xlib.clipboard_target = edit;
757 /* Request the contents of the primary buffer */
758 XConvertSelection(xlib.dpy, XA_PRIMARY, XA_STRING, XA_PRIMARY, xlib.root, CurrentTime);
759 }
760
761 NK_API void
nk_xlib_copy(nk_handle handle,const char * str,int len)762 nk_xlib_copy(nk_handle handle, const char* str, int len)
763 {
764 NK_UNUSED(handle);
765 free(xlib.clipboard_data);
766 xlib.clipboard_len = 0;
767 xlib.clipboard_data = malloc((size_t)len);
768 if (xlib.clipboard_data) {
769 memcpy(xlib.clipboard_data, str, (size_t)len);
770 xlib.clipboard_len = len;
771 XSetSelectionOwner(xlib.dpy, XA_PRIMARY, xlib.root, CurrentTime);
772 XSetSelectionOwner(xlib.dpy, xlib.xa_clipboard, xlib.root, CurrentTime);
773 }
774 }
775
776 NK_API int
nk_xlib_handle_event(Display * dpy,int screen,Window win,XEvent * evt)777 nk_xlib_handle_event(Display *dpy, int screen, Window win, XEvent *evt)
778 {
779 struct nk_context *ctx = &xlib.ctx;
780
781 NK_UNUSED(screen);
782
783 /* optional grabbing behavior */
784 if (ctx->input.mouse.grab) {
785 XDefineCursor(xlib.dpy, xlib.root, xlib.cursor);
786 ctx->input.mouse.grab = 0;
787 } else if (ctx->input.mouse.ungrab) {
788 XWarpPointer(xlib.dpy, None, xlib.root, 0, 0, 0, 0,
789 (int)ctx->input.mouse.prev.x, (int)ctx->input.mouse.prev.y);
790 XUndefineCursor(xlib.dpy, xlib.root);
791 ctx->input.mouse.ungrab = 0;
792 }
793
794 if (evt->type == KeyPress || evt->type == KeyRelease)
795 {
796 /* Key handler */
797 int ret, down = (evt->type == KeyPress);
798 KeySym *code = XGetKeyboardMapping(xlib.surf->dpy, (KeyCode)evt->xkey.keycode, 1, &ret);
799 if (*code == XK_Shift_L || *code == XK_Shift_R) nk_input_key(ctx, NK_KEY_SHIFT, down);
800 else if (*code == XK_Control_L || *code == XK_Control_R) nk_input_key(ctx, NK_KEY_CTRL, down);
801 else if (*code == XK_Delete) nk_input_key(ctx, NK_KEY_DEL, down);
802 else if (*code == XK_Return) nk_input_key(ctx, NK_KEY_ENTER, down);
803 else if (*code == XK_Tab) nk_input_key(ctx, NK_KEY_TAB, down);
804 else if (*code == XK_Left) nk_input_key(ctx, NK_KEY_LEFT, down);
805 else if (*code == XK_Right) nk_input_key(ctx, NK_KEY_RIGHT, down);
806 else if (*code == XK_Up) nk_input_key(ctx, NK_KEY_UP, down);
807 else if (*code == XK_Down) nk_input_key(ctx, NK_KEY_DOWN, down);
808 else if (*code == XK_BackSpace) nk_input_key(ctx, NK_KEY_BACKSPACE, down);
809 else if (*code == XK_Escape) nk_input_key(ctx, NK_KEY_TEXT_RESET_MODE, down);
810 else if (*code == XK_Page_Up) nk_input_key(ctx, NK_KEY_SCROLL_UP, down);
811 else if (*code == XK_Page_Down) nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down);
812 else if (*code == XK_Home) {
813 nk_input_key(ctx, NK_KEY_TEXT_START, down);
814 nk_input_key(ctx, NK_KEY_SCROLL_START, down);
815 } else if (*code == XK_End) {
816 nk_input_key(ctx, NK_KEY_TEXT_END, down);
817 nk_input_key(ctx, NK_KEY_SCROLL_END, down);
818 } else {
819 if (*code == 'c' && (evt->xkey.state & ControlMask))
820 nk_input_key(ctx, NK_KEY_COPY, down);
821 else if (*code == 'v' && (evt->xkey.state & ControlMask))
822 nk_input_key(ctx, NK_KEY_PASTE, down);
823 else if (*code == 'x' && (evt->xkey.state & ControlMask))
824 nk_input_key(ctx, NK_KEY_CUT, down);
825 else if (*code == 'z' && (evt->xkey.state & ControlMask))
826 nk_input_key(ctx, NK_KEY_TEXT_UNDO, down);
827 else if (*code == 'r' && (evt->xkey.state & ControlMask))
828 nk_input_key(ctx, NK_KEY_TEXT_REDO, down);
829 else if (*code == XK_Left && (evt->xkey.state & ControlMask))
830 nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down);
831 else if (*code == XK_Right && (evt->xkey.state & ControlMask))
832 nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down);
833 else if (*code == 'b' && (evt->xkey.state & ControlMask))
834 nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down);
835 else if (*code == 'e' && (evt->xkey.state & ControlMask))
836 nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down);
837 else {
838 if (*code == 'i')
839 nk_input_key(ctx, NK_KEY_TEXT_INSERT_MODE, down);
840 else if (*code == 'r')
841 nk_input_key(ctx, NK_KEY_TEXT_REPLACE_MODE, down);
842 if (down) {
843 char buf[32];
844 KeySym keysym = 0;
845 if (XLookupString((XKeyEvent*)evt, buf, 32, &keysym, NULL) != NoSymbol)
846 nk_input_glyph(ctx, buf);
847 }
848 }
849 }
850 XFree(code);
851 return 1;
852 } else if (evt->type == ButtonPress || evt->type == ButtonRelease) {
853 /* Button handler */
854 int down = (evt->type == ButtonPress);
855 const int x = evt->xbutton.x, y = evt->xbutton.y;
856 if (evt->xbutton.button == Button1) {
857 if (down) { /* Double-Click Button handler */
858 long dt = nk_timestamp() - xlib.last_button_click;
859 if (dt > NK_X11_DOUBLE_CLICK_LO && dt < NK_X11_DOUBLE_CLICK_HI)
860 nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, nk_true);
861 xlib.last_button_click = nk_timestamp();
862 } else nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, nk_false);
863 nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down);
864 } else if (evt->xbutton.button == Button2)
865 nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down);
866 else if (evt->xbutton.button == Button3)
867 nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down);
868 else if (evt->xbutton.button == Button4)
869 nk_input_scroll(ctx, nk_vec2(0, 1.0f));
870 else if (evt->xbutton.button == Button5)
871 nk_input_scroll(ctx, nk_vec2(0, -1.0f));
872 else return 0;
873 return 1;
874 } else if (evt->type == MotionNotify) {
875 /* Mouse motion handler */
876 const int x = evt->xmotion.x, y = evt->xmotion.y;
877 nk_input_motion(ctx, x, y);
878 if (ctx->input.mouse.grabbed) {
879 ctx->input.mouse.pos.x = ctx->input.mouse.prev.x;
880 ctx->input.mouse.pos.y = ctx->input.mouse.prev.y;
881 XWarpPointer(xlib.dpy, None, xlib.surf->root, 0, 0, 0, 0, (int)ctx->input.mouse.pos.x, (int)ctx->input.mouse.pos.y);
882 }
883 return 1;
884 } else if (evt->type == Expose || evt->type == ConfigureNotify) {
885 /* Window resize handler */
886 unsigned int width, height;
887 XWindowAttributes attr;
888 XGetWindowAttributes(dpy, win, &attr);
889 width = (unsigned int)attr.width;
890 height = (unsigned int)attr.height;
891 nk_xsurf_resize(xlib.surf, width, height);
892 return 1;
893 } else if (evt->type == KeymapNotify) {
894 XRefreshKeyboardMapping(&evt->xmapping);
895 return 1;
896 } else if (evt->type == SelectionClear) {
897 free(xlib.clipboard_data);
898 xlib.clipboard_data = NULL;
899 xlib.clipboard_len = 0;
900 return 1;
901 } else if (evt->type == SelectionRequest) {
902 XEvent reply;
903 reply.xselection.type = SelectionNotify;
904 reply.xselection.requestor = evt->xselectionrequest.requestor;
905 reply.xselection.selection = evt->xselectionrequest.selection;
906 reply.xselection.target = evt->xselectionrequest.target;
907 reply.xselection.property = None; /* Default refuse */
908 reply.xselection.time = evt->xselectionrequest.time;
909
910 if (reply.xselection.target == xlib.xa_targets) {
911 Atom target_list[4];
912 target_list[0] = xlib.xa_targets;
913 target_list[1] = xlib.xa_text;
914 target_list[2] = xlib.xa_utf8_string;
915 target_list[3] = XA_STRING;
916
917 reply.xselection.property = evt->xselectionrequest.property;
918 XChangeProperty(evt->xselection.display,evt->xselectionrequest.requestor,
919 reply.xselection.property, XA_ATOM, 32, PropModeReplace,
920 (unsigned char*)&target_list, 4);
921 } else if (xlib.clipboard_data && (reply.xselection.target == xlib.xa_text ||
922 reply.xselection.target == xlib.xa_utf8_string || reply.xselection.target == XA_STRING)) {
923 reply.xselection.property = evt->xselectionrequest.property;
924 XChangeProperty(evt->xselection.display,evt->xselectionrequest.requestor,
925 reply.xselection.property, reply.xselection.target, 8, PropModeReplace,
926 (unsigned char*)xlib.clipboard_data, xlib.clipboard_len);
927 }
928 XSendEvent(evt->xselection.display, evt->xselectionrequest.requestor, True, 0, &reply);
929 XFlush(evt->xselection.display);
930 return 1;
931 } else if (evt->type == SelectionNotify && xlib.clipboard_target) {
932 if ((evt->xselection.target != XA_STRING) &&
933 (evt->xselection.target != xlib.xa_utf8_string) &&
934 (evt->xselection.target != xlib.xa_text))
935 return 1;
936
937 {Atom actual_type;
938 int actual_format;
939 unsigned long pos = 0, len, remain;
940 unsigned char* data = 0;
941 do {
942 XGetWindowProperty(dpy, win, XA_PRIMARY, (int)pos, 1024, False,
943 AnyPropertyType, &actual_type, &actual_format, &len, &remain, &data);
944 if (len && data)
945 nk_textedit_text(xlib.clipboard_target, (char*)data, (int)len);
946 if (data != 0) XFree(data);
947 pos += (len * (unsigned long)actual_format) / 32;
948 } while (remain != 0);}
949 return 1;
950 }
951 return 0;
952 }
953
954 NK_API void
nk_xlib_shutdown(void)955 nk_xlib_shutdown(void)
956 {
957 nk_xsurf_del(xlib.surf);
958 nk_free(&xlib.ctx);
959 XFreeCursor(xlib.dpy, xlib.cursor);
960 memset(&xlib, 0, sizeof(xlib));
961 }
962
963 NK_API void
nk_xlib_render(Drawable screen,struct nk_color clear)964 nk_xlib_render(Drawable screen, struct nk_color clear)
965 {
966 const struct nk_command *cmd;
967 struct nk_context *ctx = &xlib.ctx;
968 XSurface *surf = xlib.surf;
969
970 nk_xsurf_clear(xlib.surf, nk_color_from_byte(&clear.r));
971 nk_foreach(cmd, &xlib.ctx)
972 {
973 switch (cmd->type) {
974 case NK_COMMAND_NOP: break;
975 case NK_COMMAND_SCISSOR: {
976 const struct nk_command_scissor *s =(const struct nk_command_scissor*)cmd;
977 nk_xsurf_scissor(surf, s->x, s->y, s->w, s->h);
978 } break;
979 case NK_COMMAND_LINE: {
980 const struct nk_command_line *l = (const struct nk_command_line *)cmd;
981 nk_xsurf_stroke_line(surf, l->begin.x, l->begin.y, l->end.x,
982 l->end.y, l->line_thickness, l->color);
983 } break;
984 case NK_COMMAND_RECT: {
985 const struct nk_command_rect *r = (const struct nk_command_rect *)cmd;
986 nk_xsurf_stroke_rect(surf, r->x, r->y, NK_MAX(r->w -r->line_thickness, 0),
987 NK_MAX(r->h - r->line_thickness, 0), (unsigned short)r->rounding,
988 r->line_thickness, r->color);
989 } break;
990 case NK_COMMAND_RECT_FILLED: {
991 const struct nk_command_rect_filled *r = (const struct nk_command_rect_filled *)cmd;
992 nk_xsurf_fill_rect(surf, r->x, r->y, r->w, r->h,
993 (unsigned short)r->rounding, r->color);
994 } break;
995 case NK_COMMAND_CIRCLE: {
996 const struct nk_command_circle *c = (const struct nk_command_circle *)cmd;
997 nk_xsurf_stroke_circle(surf, c->x, c->y, c->w, c->h, c->line_thickness, c->color);
998 } break;
999 case NK_COMMAND_CIRCLE_FILLED: {
1000 const struct nk_command_circle_filled *c = (const struct nk_command_circle_filled *)cmd;
1001 nk_xsurf_fill_circle(surf, c->x, c->y, c->w, c->h, c->color);
1002 } break;
1003 case NK_COMMAND_TRIANGLE: {
1004 const struct nk_command_triangle*t = (const struct nk_command_triangle*)cmd;
1005 nk_xsurf_stroke_triangle(surf, t->a.x, t->a.y, t->b.x, t->b.y,
1006 t->c.x, t->c.y, t->line_thickness, t->color);
1007 } break;
1008 case NK_COMMAND_TRIANGLE_FILLED: {
1009 const struct nk_command_triangle_filled *t = (const struct nk_command_triangle_filled *)cmd;
1010 nk_xsurf_fill_triangle(surf, t->a.x, t->a.y, t->b.x, t->b.y,
1011 t->c.x, t->c.y, t->color);
1012 } break;
1013 case NK_COMMAND_POLYGON: {
1014 const struct nk_command_polygon *p =(const struct nk_command_polygon*)cmd;
1015 nk_xsurf_stroke_polygon(surf, p->points, p->point_count, p->line_thickness,p->color);
1016 } break;
1017 case NK_COMMAND_POLYGON_FILLED: {
1018 const struct nk_command_polygon_filled *p = (const struct nk_command_polygon_filled *)cmd;
1019 nk_xsurf_fill_polygon(surf, p->points, p->point_count, p->color);
1020 } break;
1021 case NK_COMMAND_POLYLINE: {
1022 const struct nk_command_polyline *p = (const struct nk_command_polyline *)cmd;
1023 nk_xsurf_stroke_polyline(surf, p->points, p->point_count, p->line_thickness, p->color);
1024 } break;
1025 case NK_COMMAND_TEXT: {
1026 const struct nk_command_text *t = (const struct nk_command_text*)cmd;
1027 nk_xsurf_draw_text(surf, t->x, t->y, t->w, t->h,
1028 (const char*)t->string, t->length,
1029 (XFont*)t->font->userdata.ptr,
1030 t->background, t->foreground);
1031 } break;
1032 case NK_COMMAND_CURVE: {
1033 const struct nk_command_curve *q = (const struct nk_command_curve *)cmd;
1034 nk_xsurf_stroke_curve(surf, q->begin, q->ctrl[0], q->ctrl[1],
1035 q->end, 22, q->line_thickness, q->color);
1036 } break;
1037 case NK_COMMAND_IMAGE: {
1038 const struct nk_command_image *i = (const struct nk_command_image *)cmd;
1039 nk_xsurf_draw_image(surf, i->x, i->y, i->w, i->h, i->img, i->col);
1040 } break;
1041 case NK_COMMAND_RECT_MULTI_COLOR:
1042 case NK_COMMAND_ARC:
1043 case NK_COMMAND_ARC_FILLED:
1044 case NK_COMMAND_CUSTOM:
1045 default: break;
1046 }
1047 }
1048 nk_clear(ctx);
1049 nk_xsurf_blit(screen, surf, surf->w, surf->h);
1050 }
1051 #endif
1052