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nuklear/demo/x11/nuklear_xlib.c

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#include <stdio.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xresource.h>
#include <X11/Xlocale.h>
#define NK_IMPLEMENTATION
#include "nuklear_xlib.h"
#include "../../nuklear.h"
typedef struct XSurface XSurface;
struct XFont {
int ascent;
int descent;
int height;
XFontSet set;
XFontStruct *xfont;
};
struct XSurface {
GC gc;
Display *dpy;
int screen;
Window root;
Drawable drawable;
unsigned int w, h;
};
static struct {
struct nk_context ctx;
struct XSurface *surf;
} xlib;
#ifndef MIN
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#endif
#ifndef MAX
#define MAX(a,b) ((a) < (b) ? (b) : (a))
#endif
static unsigned long
color_from_byte(const nk_byte *c)
{
unsigned long res = 0;
res |= (unsigned long)c[0] << 16;
res |= (unsigned long)c[1] << 8;
res |= (unsigned long)c[2] << 0;
return (res);
}
static XSurface*
nk_xsurf_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h)
{
XSurface *surface = (XSurface*)calloc(1, sizeof(XSurface));
surface->w = w;
surface->h = h;
surface->dpy = dpy;
surface->screen = screen;
surface->root = root;
surface->gc = XCreateGC(dpy, root, 0, NULL);
XSetLineAttributes(dpy, surface->gc, 1, LineSolid, CapButt, JoinMiter);
surface->drawable = XCreatePixmap(dpy, root, w, h, 32);
return surface;
}
static void
nk_xsurf_resize(XSurface *surf, unsigned int w, unsigned int h)
{
if(!surf) return;
if (surf->w == w && surf->h == h) return;
surf->w = w; surf->h = h;
if(surf->drawable) XFreePixmap(surf->dpy, surf->drawable);
surf->drawable = XCreatePixmap(surf->dpy, surf->root, w, h,
(unsigned int)DefaultDepth(surf->dpy, surf->screen));
}
static void
nk_xsurf_scissor(XSurface *surf, float x, float y, float w, float h)
{
XRectangle clip_rect;
clip_rect.x = (short)(x-1);
clip_rect.y = (short)(y-1);
clip_rect.width = (unsigned short)(w+2);
clip_rect.height = (unsigned short)(h+2);
XSetClipRectangles(surf->dpy, surf->gc, 0, 0, &clip_rect, 1, Unsorted);
}
static void
nk_xsurf_stroke_line(XSurface *surf, short x0, short y0, short x1,
short y1, unsigned int line_thickness, struct nk_color col)
{
unsigned long c = color_from_byte(&col.r);
XSetForeground(surf->dpy, surf->gc, c);
XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
XDrawLine(surf->dpy, surf->drawable, surf->gc, (int)x0, (int)y0, (int)x1, (int)y1);
XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
}
static 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)
{
unsigned long c = color_from_byte(&col.r);
XSetForeground(surf->dpy, surf->gc, c);
XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
if (r == 0) {
XFillRectangle(surf->dpy, surf->drawable, surf->gc, x, y, w, h);
} else {
short xc = x + r;
short yc = y + r;
short wc = (short)(w - 2 * r);
short hc = (short)(h - 2 * r);
XDrawLine(surf->dpy, surf->drawable, surf->gc, xc, y, xc+wc, y);
XDrawLine(surf->dpy, surf->drawable, surf->gc, x+w, yc, x+w, yc+wc);
XDrawLine(surf->dpy, surf->drawable, surf->gc, xc, y+h, xc+wc, y+h);
XDrawLine(surf->dpy, surf->drawable, surf->gc, x, yc, yc+hc, x);
XFillArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, y,
(unsigned)r*2, (unsigned)r*2, 0 * 64, 90 * 64);
XFillArc(surf->dpy, surf->drawable, surf->gc, x, y,
(unsigned)r*2, (unsigned)r*2, 90 * 64, 90 * 64);
XFillArc(surf->dpy, surf->drawable, surf->gc, x, yc + hc - r,
(unsigned)r*2, (unsigned)2*r, 180 * 64, 90 * 64);
XFillArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, yc + hc - r,
(unsigned)r*2, (unsigned)2*r, -90 * 64, 90 * 64);
}
XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
}
static void
nk_xsurf_fill_rect(XSurface* surf, short x, short y, unsigned short w,
unsigned short h, unsigned short r, struct nk_color col)
{
unsigned long c = color_from_byte(&col.r);
XSetForeground(surf->dpy, surf->gc, c);
if (r == 0) {
XFillRectangle(surf->dpy, surf->drawable, surf->gc, x, y, w, h);
} else {
short xc = x + r;
short yc = y + r;
short wc = (short)(w - 2 * r);
short hc = (short)(h - 2 * r);
XPoint pnts[12];
pnts[0].x = x;
pnts[0].y = yc;
pnts[1].x = xc;
pnts[1].y = yc;
pnts[2].x = xc;
pnts[2].y = y;
pnts[3].x = xc + wc;
pnts[3].y = y;
pnts[4].x = xc + wc;
pnts[4].y = yc;
pnts[5].x = x + w;
pnts[5].y = yc;
pnts[6].x = x + w;
pnts[6].y = yc + hc;
pnts[7].x = xc + wc;
pnts[7].y = yc + hc;
pnts[8].x = xc + wc;
pnts[8].y = y + h;
pnts[9].x = xc;
pnts[9].y = y + h;
pnts[10].x = xc;
pnts[10].y = yc + hc;
pnts[11].x = x;
pnts[11].y = yc + hc;
XFillPolygon(surf->dpy, surf->drawable, surf->gc, pnts, 12, Convex, CoordModeOrigin);
XFillArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, y,
(unsigned)r*2, (unsigned)r*2, 0 * 64, 90 * 64);
XFillArc(surf->dpy, surf->drawable, surf->gc, x, y,
(unsigned)r*2, (unsigned)r*2, 90 * 64, 90 * 64);
XFillArc(surf->dpy, surf->drawable, surf->gc, x, yc + hc - r,
(unsigned)r*2, (unsigned)2*r, 180 * 64, 90 * 64);
XFillArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, yc + hc - r,
(unsigned)r*2, (unsigned)2*r, -90 * 64, 90 * 64);
}
}
static void
nk_xsurf_fill_triangle(XSurface *surf, short x0, short y0, short x1,
short y1, short x2, short y2, struct nk_color col)
{
XPoint pnts[3];
unsigned long c = color_from_byte(&col.r);
pnts[0].x = (short)x0;
pnts[0].y = (short)y0;
pnts[1].x = (short)x1;
pnts[1].y = (short)y1;
pnts[2].x = (short)x2;
pnts[2].y = (short)y2;
XSetForeground(surf->dpy, surf->gc, c);
XFillPolygon(surf->dpy, surf->drawable, surf->gc, pnts, 3, Convex, CoordModeOrigin);
}
static 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)
{
XPoint pnts[3];
unsigned long c = color_from_byte(&col.r);
XSetForeground(surf->dpy, surf->gc, c);
XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
XDrawLine(surf->dpy, surf->drawable, surf->gc, x0, y0, x1, y1);
XDrawLine(surf->dpy, surf->drawable, surf->gc, x1, y1, x2, y2);
XDrawLine(surf->dpy, surf->drawable, surf->gc, x2, y2, x0, y0);
XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
}
static void
nk_xsurf_fill_polygon(XSurface *surf, const struct nk_vec2i *pnts, int count,
struct nk_color col)
{
int i = 0;
#define MAX_POINTS 64
XPoint xpnts[MAX_POINTS];
unsigned long c = color_from_byte(&col.r);
XSetForeground(surf->dpy, surf->gc, c);
for (i = 0; i < count && i < MAX_POINTS; ++i) {
xpnts[i].x = pnts[i].x;
xpnts[i].y = pnts[i].y;
}
XFillPolygon(surf->dpy, surf->drawable, surf->gc, xpnts, count, Convex, CoordModeOrigin);
#undef MAX_POINTS
}
static void
nk_xsurf_stroke_polygon(XSurface *surf, const struct nk_vec2i *pnts, int count,
unsigned short line_thickness, struct nk_color col)
{
int i = 0;
unsigned long c = color_from_byte(&col.r);
XSetForeground(surf->dpy, surf->gc, c);
XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
for (i = 1; i < count; ++i)
XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[i-1].x, pnts[i-1].y, pnts[i].x, pnts[i].y);
XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[count-1].x, pnts[count-1].y, pnts[0].x, pnts[0].y);
XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
}
static void
nk_xsurf_stroke_polyline(XSurface *surf, const struct nk_vec2i *pnts,
int count, unsigned short line_thickness, struct nk_color col)
{
int i = 0;
unsigned long c = color_from_byte(&col.r);
XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
XSetForeground(surf->dpy, surf->gc, c);
for (i = 0; i < count-1; ++i)
XDrawLine(surf->dpy, surf->drawable, surf->gc, pnts[i].x, pnts[i].y, pnts[i+1].x, pnts[i+1].y);
XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
}
static void
nk_xsurf_fill_circle(XSurface *surf, short x, short y, unsigned short w,
unsigned short h, struct nk_color col)
{
unsigned long c = color_from_byte(&col.r);
XSetForeground(surf->dpy, surf->gc, c);
XFillArc(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y,
(unsigned)w, (unsigned)h, 0, 360 * 64);
}
static 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)
{
unsigned long c = color_from_byte(&col.r);
XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
XSetForeground(surf->dpy, surf->gc, c);
XDrawArc(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y,
(unsigned)w, (unsigned)h, 0, 360 * 64);
XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
}
static 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)
{
unsigned int i_step;
float t_step;
struct nk_vec2i last = p1;
XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter);
num_segments = MAX(num_segments, 1);
t_step = 1.0f/(float)num_segments;
for (i_step = 1; i_step <= num_segments; ++i_step) {
float t = t_step * (float)i_step;
float u = 1.0f - t;
float w1 = u*u*u;
float w2 = 3*u*u*t;
float w3 = 3*u*t*t;
float w4 = t * t *t;
float x = w1 * p1.x + w2 * p2.x + w3 * p3.x + w4 * p4.x;
float y = w1 * p1.y + w2 * p2.y + w3 * p3.y + w4 * p4.y;
nk_xsurf_stroke_line(surf, last.x, last.y, (short)x, (short)y, line_thickness,col);
last.x = (short)x; last.y = (short)y;
}
XSetLineAttributes(surf->dpy, surf->gc, 1, LineSolid, CapButt, JoinMiter);
}
static 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)
{
int tx, ty;
unsigned long bg = color_from_byte(&cbg.r);
unsigned long fg = color_from_byte(&cfg.r);
XSetForeground(surf->dpy, surf->gc, bg);
XFillRectangle(surf->dpy, surf->drawable, surf->gc, (int)x, (int)y, (unsigned)w, (unsigned)h);
if(!text || !font || !len) return;
tx = (int)x;
ty = (int)y + font->ascent;
XSetForeground(surf->dpy, surf->gc, fg);
if(font->set)
XmbDrawString(surf->dpy,surf->drawable,font->set,surf->gc,tx,ty,(const char*)text,(int)len);
else
XDrawString(surf->dpy, surf->drawable, surf->gc, tx, ty, (const char*)text, (int)len);
}
static void
nk_xsurf_clear(XSurface *surf, unsigned long color)
{
XSetForeground(surf->dpy, surf->gc, color);
XFillRectangle(surf->dpy, surf->drawable, surf->gc, 0, 0, surf->w, surf->h);
}
static void
nk_xsurf_blit(Drawable target, XSurface *surf, unsigned int w, unsigned int h)
{
XCopyArea(surf->dpy, surf->drawable, target, surf->gc, 0, 0, w, h, 0, 0);
}
static void
nk_xsurf_del(XSurface *surf)
{
XFreePixmap(surf->dpy, surf->drawable);
XFreeGC(surf->dpy, surf->gc);
free(surf);
}
XFont*
nk_xfont_create(Display *dpy, const char *name)
{
int n;
char *def, **missing;
XFont *font = (XFont*)calloc(1, sizeof(XFont));
font->set = XCreateFontSet(dpy, name, &missing, &n, &def);
if(missing) {
while(n--)
fprintf(stderr, "missing fontset: %s\n", missing[n]);
XFreeStringList(missing);
}
if(font->set) {
XFontStruct **xfonts;
char **font_names;
XExtentsOfFontSet(font->set);
n = XFontsOfFontSet(font->set, &xfonts, &font_names);
while(n--) {
font->ascent = MAX(font->ascent, (*xfonts)->ascent);
font->descent = MAX(font->descent,(*xfonts)->descent);
xfonts++;
}
} else {
if(!(font->xfont = XLoadQueryFont(dpy, name))
&& !(font->xfont = XLoadQueryFont(dpy, "fixed"))) {
free(font);
return 0;
}
font->ascent = font->xfont->ascent;
font->descent = font->xfont->descent;
}
font->height = font->ascent + font->descent;
return font;
}
static float
nk_xfont_get_text_width(nk_handle handle, float height, const char *text, int len)
{
XFont *font = (XFont*)handle.ptr;
XRectangle r;
if(!font || !text)
return 0;
if(font->set) {
XmbTextExtents(font->set, (const char*)text, len, NULL, &r);
return (float)r.width;
} else{
int w = XTextWidth(font->xfont, (const char*)text, len);
return (float)w;
}
}
void
nk_xfont_del(Display *dpy, XFont *font)
{
if(!font) return;
if(font->set)
XFreeFontSet(dpy, font->set);
else
XFreeFont(dpy, font->xfont);
free(font);
}
NK_API struct nk_context*
nk_xlib_init(XFont *xfont, Display *dpy, int screen, Window root,
unsigned int w, unsigned int h)
{
struct nk_user_font font;
font.userdata = nk_handle_ptr(xfont);
font.height = (float)xfont->height;
font.width = nk_xfont_get_text_width;
if (!setlocale(LC_ALL,"")) return 0;
if (!XSupportsLocale()) return 0;
if (!XSetLocaleModifiers("@im=none")) return 0;
xlib.surf = nk_xsurf_create(dpy, screen, root, w, h);
nk_init_default(&xlib.ctx, &font);
return &xlib.ctx;
}
NK_API void
nk_xlib_set_font(XFont *xfont)
{
struct nk_user_font font;
font.userdata = nk_handle_ptr(xfont);
font.height = (float)xfont->height;
font.width = nk_xfont_get_text_width;
nk_style_set_font(&xlib.ctx, &font);
}
NK_API void
nk_xlib_handle_event(Display *dpy, int screen, Window win, XEvent *evt)
{
struct nk_context *ctx = &xlib.ctx;
if (evt->type == KeyPress || evt->type == KeyRelease)
{
/* Key handler */
int ret, down = (evt->type == KeyPress);
KeySym *code = XGetKeyboardMapping(xlib.surf->dpy, (KeyCode)evt->xkey.keycode, 1, &ret);
if (*code == XK_Shift_L || *code == XK_Shift_R) nk_input_key(ctx, NK_KEY_SHIFT, down);
else if (*code == XK_Delete) nk_input_key(ctx, NK_KEY_DEL, down);
else if (*code == XK_Return) nk_input_key(ctx, NK_KEY_ENTER, down);
else if (*code == XK_Tab) nk_input_key(ctx, NK_KEY_TAB, down);
else if (*code == XK_Left) nk_input_key(ctx, NK_KEY_LEFT, down);
else if (*code == XK_Right) nk_input_key(ctx, NK_KEY_RIGHT, down);
else if (*code == XK_BackSpace) nk_input_key(ctx, NK_KEY_BACKSPACE, down);
else if (*code == XK_Home) nk_input_key(ctx, NK_KEY_TEXT_START, down);
else if (*code == XK_End) nk_input_key(ctx, NK_KEY_TEXT_END, down);
else if (*code == XK_space && !down) nk_input_char(ctx, ' ');
else {
if (*code == 'c' && (evt->xkey.state & ControlMask))
nk_input_key(ctx, NK_KEY_COPY, down);
else if (*code == 'v' && (evt->xkey.state & ControlMask))
nk_input_key(ctx, NK_KEY_PASTE, down);
else if (*code == 'x' && (evt->xkey.state & ControlMask))
nk_input_key(ctx, NK_KEY_CUT, down);
else if (*code == 'z' && (evt->xkey.state & ControlMask))
nk_input_key(ctx, NK_KEY_TEXT_UNDO, down);
else if (*code == 'r' && (evt->xkey.state & ControlMask))
nk_input_key(ctx, NK_KEY_TEXT_REDO, down);
else if (*code == XK_Left && (evt->xkey.state & ControlMask))
nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down);
else if (*code == XK_Right && (evt->xkey.state & ControlMask))
nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down);
else if (*code == 'b' && (evt->xkey.state & ControlMask))
nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down);
else if (*code == 'e' && (evt->xkey.state & ControlMask))
nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down);
else if (!down) {
char buf[32];
if ((*code >= 'a' && *code <= 'z') || (*code >= 'A' && *code <= 'Z')) {
KeySym keysym = 0;
if (XLookupString((XKeyEvent*)evt, buf, 32, &keysym, NULL) != NoSymbol)
nk_input_glyph(ctx, buf);
}
}
}
XFree(code);
} else if (evt->type == ButtonPress || evt->type == ButtonRelease) {
/* Button handler */
int down = (evt->type == ButtonPress);
const int x = evt->xbutton.x, y = evt->xbutton.y;
if (evt->xbutton.button == Button1)
nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down);
if (evt->xbutton.button == Button2)
nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down);
else if (evt->xbutton.button == Button3)
nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down);
else if (evt->xbutton.button == Button4)
nk_input_scroll(ctx, 1.0f);
else if (evt->xbutton.button == Button5)
nk_input_scroll(ctx, -1.0f);
} else if (evt->type == MotionNotify) {
/* Mouse motion handler */
const int x = evt->xmotion.x, y = evt->xmotion.y;
nk_input_motion(ctx, x, y);
} else if (evt->type == Expose || evt->type == ConfigureNotify) {
/* Window resize handler */
unsigned int width, height;
XWindowAttributes attr;
XGetWindowAttributes(dpy, win, &attr);
width = (unsigned int)attr.width;
height = (unsigned int)attr.height;
nk_xsurf_resize(xlib.surf, width, height);
} else if (evt->type == KeymapNotify)
XRefreshKeyboardMapping(&evt->xmapping);
}
NK_API void
nk_xlib_shutdown(void)
{
nk_xsurf_del(xlib.surf);
nk_free(&xlib.ctx);
}
NK_API void
nk_xlib_render(Drawable screen, struct nk_color clear)
{
const struct nk_command *cmd;
struct nk_context *ctx = &xlib.ctx;
XSurface *surf = xlib.surf;
nk_xsurf_clear(xlib.surf, color_from_byte(&clear.r));
nk_foreach(cmd, &xlib.ctx)
{
switch (cmd->type) {
case NK_COMMAND_NOP: break;
case NK_COMMAND_SCISSOR: {
const struct nk_command_scissor *s =(const struct nk_command_scissor*)cmd;
nk_xsurf_scissor(surf, s->x, s->y, s->w, s->h);
} break;
case NK_COMMAND_LINE: {
const struct nk_command_line *l = (const struct nk_command_line *)cmd;
nk_xsurf_stroke_line(surf, l->begin.x, l->begin.y, l->end.x,
l->end.y, l->line_thickness, l->color);
} break;
case NK_COMMAND_RECT: {
const struct nk_command_rect *r = (const struct nk_command_rect *)cmd;
nk_xsurf_stroke_rect(surf, r->x, r->y, r->w, r->h,
(unsigned short)r->rounding, r->line_thickness, r->color);
} break;
case NK_COMMAND_RECT_FILLED: {
const struct nk_command_rect_filled *r = (const struct nk_command_rect_filled *)cmd;
nk_xsurf_fill_rect(surf, r->x, r->y, r->w, r->h,
(unsigned short)r->rounding, r->color);
} break;
case NK_COMMAND_CIRCLE: {
const struct nk_command_circle *c = (const struct nk_command_circle *)cmd;
nk_xsurf_stroke_circle(surf, c->x, c->y, c->w, c->h, c->line_thickness, c->color);
} break;
case NK_COMMAND_CIRCLE_FILLED: {
const struct nk_command_circle_filled *c = (const struct nk_command_circle_filled *)cmd;
nk_xsurf_fill_circle(surf, c->x, c->y, c->w, c->h, c->color);
} break;
case NK_COMMAND_TRIANGLE: {
const struct nk_command_triangle*t = (const struct nk_command_triangle*)cmd;
nk_xsurf_stroke_triangle(surf, t->a.x, t->a.y, t->b.x, t->b.y,
t->c.x, t->c.y, t->line_thickness, t->color);
} break;
case NK_COMMAND_TRIANGLE_FILLED: {
const struct nk_command_triangle_filled *t = (const struct nk_command_triangle_filled *)cmd;
nk_xsurf_fill_triangle(surf, t->a.x, t->a.y, t->b.x, t->b.y,
t->c.x, t->c.y, t->color);
} break;
case NK_COMMAND_POLYGON: {
const struct nk_command_polygon *p =(const struct nk_command_polygon*)cmd;
nk_xsurf_stroke_polygon(surf, p->points, p->point_count, p->line_thickness,p->color);
} break;
case NK_COMMAND_POLYGON_FILLED: {
const struct nk_command_polygon_filled *p = (const struct nk_command_polygon_filled *)cmd;
nk_xsurf_fill_polygon(surf, p->points, p->point_count, p->color);
} break;
case NK_COMMAND_POLYLINE: {
const struct nk_command_polyline *p = (const struct nk_command_polyline *)cmd;
nk_xsurf_stroke_polyline(surf, p->points, p->point_count, p->line_thickness, p->color);
} break;
case NK_COMMAND_TEXT: {
const struct nk_command_text *t = (const struct nk_command_text*)cmd;
nk_xsurf_draw_text(surf, t->x, t->y, t->w, t->h,
(const char*)t->string, t->length,
(XFont*)t->font->userdata.ptr,
t->background, t->foreground);
} break;
case NK_COMMAND_CURVE: {
const struct nk_command_curve *q = (const struct nk_command_curve *)cmd;
nk_xsurf_stroke_curve(surf, q->begin, q->ctrl[0], q->ctrl[1],
q->end, 22, q->line_thickness, q->color);
} break;
case NK_COMMAND_RECT_MULTI_COLOR:
case NK_COMMAND_IMAGE:
case NK_COMMAND_ARC:
case NK_COMMAND_ARC_FILLED:
default: break;
}
}
nk_clear(ctx);
nk_xsurf_blit(screen, surf, surf->w, surf->h);
}
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