/* * Nuklear - v1.40.8 - public domain * no warrenty implied; use at your own risk. * authored from 2015-2017 by Micha Mettke */ /* * ============================================================== * * API * * =============================================================== */ #ifndef NK_XLIB_H_ #define NK_XLIB_H_ #include typedef struct XFont XFont; #ifdef NK_XLIB_USE_XFT NK_API struct nk_context* nk_xlib_init(XFont*, Display*, int scrn, Window root, Visual *vis, Colormap cmap, unsigned w, unsigned h); #else NK_API struct nk_context* nk_xlib_init(XFont*, Display*, int scrn, Window root, unsigned w, unsigned h); #endif NK_API int nk_xlib_handle_event(Display*, int scrn, Window, XEvent*); NK_API void nk_xlib_render(Drawable screen, struct nk_color clear); NK_API void nk_xlib_shutdown(void); NK_API void nk_xlib_set_font(XFont*); NK_API void nk_xlib_push_font(XFont*); NK_API void nk_xlib_paste(nk_handle, struct nk_text_edit*); NK_API void nk_xlib_copy(nk_handle, const char*, int len); /* Image */ #ifdef NK_XLIB_INCLUDE_STB_IMAGE NK_API struct nk_image nk_xsurf_load_image_from_file(char const *filename); NK_API struct nk_image nk_xsurf_load_image_from_memory(const void *membuf, nk_uint membufSize); #endif /* Font */ NK_API XFont* nk_xfont_create(Display *dpy, const char *name); NK_API void nk_xfont_del(Display *dpy, XFont *font); #endif /* * ============================================================== * * IMPLEMENTATION * * =============================================================== */ #ifdef NK_XLIB_IMPLEMENTATION #include #include #include #include #include #ifdef NK_XLIB_USE_XFT #include #endif #include #include #include #ifdef NK_XLIB_IMPLEMENT_STB_IMAGE #define STB_IMAGE_IMPLEMENTATION #endif #ifdef NK_XLIB_INCLUDE_STB_IMAGE #include "../../example/stb_image.h" #endif #ifndef NK_X11_DOUBLE_CLICK_LO #define NK_X11_DOUBLE_CLICK_LO 20 #endif #ifndef NK_X11_DOUBLE_CLICK_HI #define NK_X11_DOUBLE_CLICK_HI 200 #endif typedef struct XSurface XSurface; typedef struct XImageWithAlpha XImageWithAlpha; struct XFont { int ascent; int descent; int height; #ifdef NK_XLIB_USE_XFT XftFont * ft; #else XFontSet set; XFontStruct *xfont; #endif struct nk_user_font handle; }; struct XSurface { GC gc; Display *dpy; int screen; Window root; Drawable drawable; unsigned int w, h; #ifdef NK_XLIB_USE_XFT XftDraw * ftdraw; #endif }; struct XImageWithAlpha { XImage* ximage; GC clipMaskGC; Pixmap clipMask; }; static struct { char *clipboard_data; int clipboard_len; struct nk_text_edit* clipboard_target; Atom xa_clipboard; Atom xa_targets; Atom xa_text; Atom xa_utf8_string; struct nk_context ctx; struct XSurface *surf; Cursor cursor; Display *dpy; Window root; #ifdef NK_XLIB_USE_XFT Visual *vis; Colormap cmap; #endif long last_button_click; } xlib; NK_INTERN long nk_timestamp(void) { struct timeval tv; if (gettimeofday(&tv, NULL) < 0) return 0; return (long)((long)tv.tv_sec * 1000 + (long)tv.tv_usec/1000); } NK_INTERN unsigned long nk_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); } NK_INTERN XSurface* nk_xsurf_create(int screen, unsigned int w, unsigned int h) { XSurface *surface = (XSurface*)calloc(1, sizeof(XSurface)); surface->w = w; surface->h = h; surface->dpy = xlib.dpy; surface->screen = screen; surface->root = xlib.root; surface->gc = XCreateGC(xlib.dpy, xlib.root, 0, NULL); XSetLineAttributes(xlib.dpy, surface->gc, 1, LineSolid, CapButt, JoinMiter); surface->drawable = XCreatePixmap(xlib.dpy, xlib.root, w, h, (unsigned int)DefaultDepth(xlib.dpy, screen)); #ifdef NK_XLIB_USE_XFT surface->ftdraw = XftDrawCreate(xlib.dpy, surface->drawable, xlib.vis, xlib.cmap); #endif return surface; } NK_INTERN 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)); #ifdef NK_XLIB_USE_XFT XftDrawChange(surf->ftdraw, surf->drawable); #endif return; } NK_INTERN 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); #ifdef NK_XLIB_USE_XFT XftDrawSetClipRectangles(surf->ftdraw, 0, 0, &clip_rect, 1); #endif return; } 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) { unsigned long c = nk_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); } 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) { unsigned long c = nk_color_from_byte(&col.r); XSetForeground(surf->dpy, surf->gc, c); XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter); if (r == 0) {XDrawRectangle(surf->dpy, surf->drawable, surf->gc, x, y, w, h);return;} {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+hc); XDrawLine(surf->dpy, surf->drawable, surf->gc, xc, y+h, xc+wc, y+h); XDrawLine(surf->dpy, surf->drawable, surf->gc, x, yc, x, yc+hc); XDrawArc(surf->dpy, surf->drawable, surf->gc, xc + wc - r, y, (unsigned)r*2, (unsigned)r*2, 0 * 64, 90 * 64); XDrawArc(surf->dpy, surf->drawable, surf->gc, x, y, (unsigned)r*2, (unsigned)r*2, 90 * 64, 90 * 64); XDrawArc(surf->dpy, surf->drawable, surf->gc, x, yc + hc - r, (unsigned)r*2, (unsigned)2*r, 180 * 64, 90 * 64); XDrawArc(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); } 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) { unsigned long c = nk_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); return;} {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);} } 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) { XPoint pnts[3]; unsigned long c = nk_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); } 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) { unsigned long c = nk_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); } NK_INTERN void nk_xsurf_fill_polygon(XSurface *surf, const struct nk_vec2i *pnts, int count, struct nk_color col) { int i = 0; #define MAX_POINTS 128 XPoint xpnts[MAX_POINTS]; unsigned long c = nk_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 } NK_INTERN 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 = nk_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); } NK_INTERN 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 = nk_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); } NK_INTERN void nk_xsurf_fill_circle(XSurface *surf, short x, short y, unsigned short w, unsigned short h, struct nk_color col) { unsigned long c = nk_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); } 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) { unsigned long c = nk_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); } NK_INTERN void nk_xsurf_stroke_arc(XSurface *surf, short cx, short cy, unsigned short radius, float a_min, float a_max, unsigned short line_thickness, struct nk_color col) { unsigned long c = nk_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)(cx - radius), (int)(cy - radius), (unsigned)(radius * 2), (unsigned)(radius * 2), (int)(a_min * 180 * 64 / NK_PI), (int)(a_max * 180 * 64 / NK_PI)); } NK_INTERN void nk_xsurf_fill_arc(XSurface *surf, short cx, short cy, unsigned short radius, float a_min, float a_max, struct nk_color col) { unsigned long c = nk_color_from_byte(&col.r); XSetForeground(surf->dpy, surf->gc, c); XFillArc(surf->dpy, surf->drawable, surf->gc, (int)(cx - radius), (int)(cy - radius), (unsigned)(radius * 2), (unsigned)(radius * 2), (int)(a_min * 180 * 64 / NK_PI), (int)(a_max * 180 * 64 / NK_PI)); } 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) { unsigned int i_step; float t_step; struct nk_vec2i last = p1; XSetLineAttributes(surf->dpy, surf->gc, line_thickness, LineSolid, CapButt, JoinMiter); num_segments = NK_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); } NK_INTERN void nk_xsurf_draw_text(XSurface *surf, short x, short y, const char *text, int len, XFont *font, struct nk_color cfg) { #ifdef NK_XLIB_USE_XFT XRenderColor xrc; XftColor color; #else unsigned long fg = nk_color_from_byte(&cfg.r); #endif int tx, ty; if(!text || !font || !len) return; tx = (int)x; ty = (int)y + font->ascent; #ifdef NK_XLIB_USE_XFT xrc.red = cfg.r * 257; xrc.green = cfg.g * 257; xrc.blue = cfg.b * 257; xrc.alpha = cfg.a * 257; XftColorAllocValue(surf->dpy, xlib.vis, xlib.cmap, &xrc, &color); XftDrawStringUtf8(surf->ftdraw, &color, font->ft, tx, ty, (FcChar8*)text, len); XftColorFree(surf->dpy, xlib.vis, xlib.cmap, &color); #else 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); #endif return; } #ifdef NK_XLIB_INCLUDE_STB_IMAGE NK_INTERN struct nk_image nk_stbi_image_to_xsurf(unsigned char *data, int width, int height, int channels) { XSurface *surf = xlib.surf; struct nk_image img; int bpl = channels; long i, isize = width*height*channels; XImageWithAlpha *aimage = (XImageWithAlpha*)calloc( 1, sizeof(XImageWithAlpha) ); int depth = DefaultDepth(surf->dpy, surf->screen); if (data == NULL) return nk_image_id(0); if (aimage == NULL) return nk_image_id(0); switch (depth){ case 24: bpl = 4; break; case 16: case 15: bpl = 2; break; default: bpl = 1; break; } /* rgba to bgra */ if (channels >= 3){ for (i=0; i < isize; i += channels) { unsigned char red = data[i+2]; unsigned char blue = data[i]; data[i] = red; data[i+2] = blue; } } if (channels == 4){ const unsigned alpha_treshold = 127; aimage->clipMask = XCreatePixmap(surf->dpy, surf->drawable, width, height, 1); if( aimage->clipMask ){ aimage->clipMaskGC = XCreateGC(surf->dpy, aimage->clipMask, 0, 0); XSetForeground(surf->dpy, aimage->clipMaskGC, BlackPixel(surf->dpy, surf->screen)); XFillRectangle(surf->dpy, aimage->clipMask, aimage->clipMaskGC, 0, 0, width, height); XSetForeground(surf->dpy, aimage->clipMaskGC, WhitePixel(surf->dpy, surf->screen)); for (i=0; i < isize; i += channels){ unsigned char alpha = data[i+3]; int div = i / channels; int x = div % width; int y = div / width; if( alpha > alpha_treshold ) XDrawPoint(surf->dpy, aimage->clipMask, aimage->clipMaskGC, x, y); } } } aimage->ximage = XCreateImage(surf->dpy, CopyFromParent, depth, ZPixmap, 0, (char*)data, width, height, bpl*8, bpl * width); img = nk_image_ptr( (void*)aimage); img.h = height; img.w = width; return img; } NK_API struct nk_image nk_xsurf_load_image_from_memory(const void *membuf, nk_uint membufSize) { int x,y,n; unsigned char *data; data = stbi_load_from_memory(membuf, membufSize, &x, &y, &n, 0); return nk_stbi_image_to_xsurf(data, x, y, n); } NK_API struct nk_image nk_xsurf_load_image_from_file(char const *filename) { int x,y,n; unsigned char *data; data = stbi_load(filename, &x, &y, &n, 0); return nk_stbi_image_to_xsurf(data, x, y, n); } #endif /* NK_XLIB_INCLUDE_STB_IMAGE */ 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) { XImageWithAlpha *aimage = img.handle.ptr; NK_UNUSED(col); if (aimage){ if (aimage->clipMask){ XSetClipMask(surf->dpy, surf->gc, aimage->clipMask); XSetClipOrigin(surf->dpy, surf->gc, x, y); } XPutImage(surf->dpy, surf->drawable, surf->gc, aimage->ximage, 0, 0, x, y, w, h); XSetClipMask(surf->dpy, surf->gc, None); } } void nk_xsurf_image_free(struct nk_image* image) { XSurface *surf = xlib.surf; XImageWithAlpha *aimage = image->handle.ptr; if (!aimage) return; XDestroyImage(aimage->ximage); XFreePixmap(surf->dpy, aimage->clipMask); XFreeGC(surf->dpy, aimage->clipMaskGC); free(aimage); } NK_INTERN 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); } NK_INTERN 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); } NK_INTERN void nk_xsurf_del(XSurface *surf) { #ifdef NK_XLIB_USE_XFT XftDrawDestroy(surf->ftdraw); #endif XFreePixmap(surf->dpy, surf->drawable); XFreeGC(surf->dpy, surf->gc); free(surf); } NK_API XFont* nk_xfont_create(Display *dpy, const char *name) { #ifdef NK_XLIB_USE_XFT XFont *font = (XFont*)calloc(1, sizeof(XFont)); font->ft = XftFontOpenName(dpy, XDefaultScreen(dpy), name); if (!font->ft) { fprintf(stderr, "missing font: %s\n", name); return font; } font->ascent = font->ft->ascent; font->descent = font->ft->descent; font->height = font->ft->height; #else 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 = NK_MAX(font->ascent, (*xfonts)->ascent); font->descent = NK_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; #endif return font; } NK_INTERN float nk_xfont_get_text_width(nk_handle handle, float height, const char *text, int len) { XFont *font = (XFont*)handle.ptr; #ifdef NK_XLIB_USE_XFT XGlyphInfo g; NK_UNUSED(height); if(!font || !text) return 0; XftTextExtentsUtf8(xlib.dpy, font->ft, (FcChar8*)text, len, &g); return g.xOff; #else XRectangle r; NK_UNUSED(height); 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; } #endif } NK_API void nk_xfont_del(Display *dpy, XFont *font) { if(!font) return; #ifdef NK_XLIB_USE_XFT XftFontClose(dpy, font->ft); #else if(font->set) XFreeFontSet(dpy, font->set); else XFreeFont(dpy, font->xfont); #endif free(font); } NK_API struct nk_context* nk_xlib_init(XFont *xfont, Display *dpy, int screen, Window root, #ifdef NK_XLIB_USE_XFT Visual *vis, Colormap cmap, #endif unsigned int w, unsigned int h) { struct nk_user_font *font = &xfont->handle; font->userdata = nk_handle_ptr(xfont); font->height = (float)xfont->height; font->width = nk_xfont_get_text_width; xlib.dpy = dpy; xlib.root = root; #ifdef NK_XLIB_USE_XFT xlib.vis = vis; xlib.cmap = cmap; #endif if (!setlocale(LC_ALL,"")) return 0; if (!XSupportsLocale()) return 0; if (!XSetLocaleModifiers("@im=none")) return 0; xlib.xa_clipboard = XInternAtom(dpy, "CLIPBOARD", False); xlib.xa_targets = XInternAtom(dpy, "TARGETS", False); xlib.xa_text = XInternAtom(dpy, "TEXT", False); xlib.xa_utf8_string = XInternAtom(dpy, "UTF8_STRING", False); /* create invisible cursor */ {static XColor dummy; char data[1] = {0}; Pixmap blank = XCreateBitmapFromData(dpy, root, data, 1, 1); if (blank == None) return 0; xlib.cursor = XCreatePixmapCursor(dpy, blank, blank, &dummy, &dummy, 0, 0); XFreePixmap(dpy, blank);} xlib.surf = nk_xsurf_create(screen, 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 = &xfont->handle; 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_push_font(XFont *xfont) { struct nk_user_font *font = &xfont->handle; font->userdata = nk_handle_ptr(xfont); font->height = (float)xfont->height; font->width = nk_xfont_get_text_width; nk_style_push_font(&xlib.ctx, font); } NK_API void nk_xlib_paste(nk_handle handle, struct nk_text_edit* edit) { NK_UNUSED(handle); /* Paste in X is asynchronous, so can not use a temporary text edit */ NK_ASSERT(edit != &xlib.ctx.text_edit && "Paste not supported for temporary editors"); xlib.clipboard_target = edit; /* Request the contents of the primary buffer */ XConvertSelection(xlib.dpy, XA_PRIMARY, XA_STRING, XA_PRIMARY, xlib.root, CurrentTime); } NK_API void nk_xlib_copy(nk_handle handle, const char* str, int len) { NK_UNUSED(handle); free(xlib.clipboard_data); xlib.clipboard_len = 0; xlib.clipboard_data = malloc((size_t)len); if (xlib.clipboard_data) { memcpy(xlib.clipboard_data, str, (size_t)len); xlib.clipboard_len = len; XSetSelectionOwner(xlib.dpy, XA_PRIMARY, xlib.root, CurrentTime); XSetSelectionOwner(xlib.dpy, xlib.xa_clipboard, xlib.root, CurrentTime); } } NK_API int nk_xlib_handle_event(Display *dpy, int screen, Window win, XEvent *evt) { struct nk_context *ctx = &xlib.ctx; NK_UNUSED(screen); /* optional grabbing behavior */ if (ctx->input.mouse.grab) { XDefineCursor(xlib.dpy, xlib.root, xlib.cursor); ctx->input.mouse.grab = 0; } else if (ctx->input.mouse.ungrab) { XWarpPointer(xlib.dpy, None, xlib.root, 0, 0, 0, 0, (int)ctx->input.mouse.prev.x, (int)ctx->input.mouse.prev.y); XUndefineCursor(xlib.dpy, xlib.root); ctx->input.mouse.ungrab = 0; } 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_Control_L || *code == XK_Control_R) nk_input_key(ctx, NK_KEY_CTRL, 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_Up) nk_input_key(ctx, NK_KEY_UP, down); else if (*code == XK_Down) nk_input_key(ctx, NK_KEY_DOWN, down); else if (*code == XK_BackSpace) nk_input_key(ctx, NK_KEY_BACKSPACE, down); else if (*code == XK_Escape) nk_input_key(ctx, NK_KEY_TEXT_RESET_MODE, down); else if (*code == XK_Page_Up) nk_input_key(ctx, NK_KEY_SCROLL_UP, down); else if (*code == XK_Page_Down) nk_input_key(ctx, NK_KEY_SCROLL_DOWN, down); else if (*code == XK_Home) { nk_input_key(ctx, NK_KEY_TEXT_START, down); nk_input_key(ctx, NK_KEY_SCROLL_START, down); } else if (*code == XK_End) { nk_input_key(ctx, NK_KEY_TEXT_END, down); nk_input_key(ctx, NK_KEY_SCROLL_END, down); } 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 (*code == 'i') nk_input_key(ctx, NK_KEY_TEXT_INSERT_MODE, down); else if (*code == 'r') nk_input_key(ctx, NK_KEY_TEXT_REPLACE_MODE, down); if (down) { char buf[32]; KeySym keysym = 0; if (XLookupString((XKeyEvent*)evt, buf, 32, &keysym, NULL) != NoSymbol) nk_input_glyph(ctx, buf); } } } XFree(code); return 1; } 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) { if (down) { /* Double-Click Button handler */ long dt = nk_timestamp() - xlib.last_button_click; if (dt > NK_X11_DOUBLE_CLICK_LO && dt < NK_X11_DOUBLE_CLICK_HI) nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, nk_true); xlib.last_button_click = nk_timestamp(); } else nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, nk_false); nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down); } else 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, nk_vec2(0, 1.0f)); else if (evt->xbutton.button == Button5) nk_input_scroll(ctx, nk_vec2(0, -1.0f)); else return 0; return 1; } else if (evt->type == MotionNotify) { /* Mouse motion handler */ const int x = evt->xmotion.x, y = evt->xmotion.y; nk_input_motion(ctx, x, y); if (ctx->input.mouse.grabbed) { ctx->input.mouse.pos.x = ctx->input.mouse.prev.x; ctx->input.mouse.pos.y = ctx->input.mouse.prev.y; XWarpPointer(xlib.dpy, None, xlib.surf->root, 0, 0, 0, 0, (int)ctx->input.mouse.pos.x, (int)ctx->input.mouse.pos.y); } return 1; } 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); return 1; } else if (evt->type == KeymapNotify) { XRefreshKeyboardMapping(&evt->xmapping); return 1; } else if (evt->type == SelectionClear) { free(xlib.clipboard_data); xlib.clipboard_data = NULL; xlib.clipboard_len = 0; return 1; } else if (evt->type == SelectionRequest) { XEvent reply; reply.xselection.type = SelectionNotify; reply.xselection.requestor = evt->xselectionrequest.requestor; reply.xselection.selection = evt->xselectionrequest.selection; reply.xselection.target = evt->xselectionrequest.target; reply.xselection.property = None; /* Default refuse */ reply.xselection.time = evt->xselectionrequest.time; if (reply.xselection.target == xlib.xa_targets) { Atom target_list[4]; target_list[0] = xlib.xa_targets; target_list[1] = xlib.xa_text; target_list[2] = xlib.xa_utf8_string; target_list[3] = XA_STRING; reply.xselection.property = evt->xselectionrequest.property; XChangeProperty(evt->xselection.display,evt->xselectionrequest.requestor, reply.xselection.property, XA_ATOM, 32, PropModeReplace, (unsigned char*)&target_list, 4); } else if (xlib.clipboard_data && (reply.xselection.target == xlib.xa_text || reply.xselection.target == xlib.xa_utf8_string || reply.xselection.target == XA_STRING)) { reply.xselection.property = evt->xselectionrequest.property; XChangeProperty(evt->xselection.display,evt->xselectionrequest.requestor, reply.xselection.property, reply.xselection.target, 8, PropModeReplace, (unsigned char*)xlib.clipboard_data, xlib.clipboard_len); } XSendEvent(evt->xselection.display, evt->xselectionrequest.requestor, True, 0, &reply); XFlush(evt->xselection.display); return 1; } else if (evt->type == SelectionNotify && xlib.clipboard_target) { if ((evt->xselection.target != XA_STRING) && (evt->xselection.target != xlib.xa_utf8_string) && (evt->xselection.target != xlib.xa_text)) return 1; {Atom actual_type; int actual_format; unsigned long pos = 0, len, remain; unsigned char* data = 0; do { XGetWindowProperty(dpy, win, XA_PRIMARY, (int)pos, 1024, False, AnyPropertyType, &actual_type, &actual_format, &len, &remain, &data); if (len && data) nk_textedit_text(xlib.clipboard_target, (char*)data, (int)len); if (data != 0) XFree(data); pos += (len * (unsigned long)actual_format) / 32; } while (remain != 0);} return 1; } return 0; } NK_API void nk_xlib_shutdown(void) { nk_xsurf_del(xlib.surf); nk_free(&xlib.ctx); XFreeCursor(xlib.dpy, xlib.cursor); memset(&xlib, 0, sizeof(xlib)); } 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, nk_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, NK_MAX(r->w -r->line_thickness, 0), NK_MAX(r->h - r->line_thickness, 0), (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_ARC: { const struct nk_command_arc *a = (const struct nk_command_arc *)cmd; nk_xsurf_stroke_arc(surf, a->cx, a->cy, a->r, a->a[0], a->a[1], a->line_thickness, a->color); } break; case NK_COMMAND_ARC_FILLED: { const struct nk_command_arc_filled *a = (const struct nk_command_arc_filled *)cmd; nk_xsurf_fill_arc(surf, a->cx, a->cy, a->r, a->a[0], a->a[1], a->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, (const char*)t->string, t->length, (XFont*)t->font->userdata.ptr, 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_IMAGE: { const struct nk_command_image *i = (const struct nk_command_image *)cmd; nk_xsurf_draw_image(surf, i->x, i->y, i->w, i->h, i->img, i->col); } break; case NK_COMMAND_RECT_MULTI_COLOR: case NK_COMMAND_CUSTOM: default: break; } } nk_clear(ctx); nk_xsurf_blit(screen, surf, surf->w, surf->h); } #endif