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Diffstat (limited to 'vendor/nuklear_xlib.h')
| -rw-r--r-- | vendor/nuklear_xlib.h | 1143 |
1 files changed, 1143 insertions, 0 deletions
diff --git a/vendor/nuklear_xlib.h b/vendor/nuklear_xlib.h new file mode 100644 index 0000000..b72dcd8 --- /dev/null +++ b/vendor/nuklear_xlib.h @@ -0,0 +1,1143 @@ +/* + * 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 <X11/Xlib.h> + +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); +NK_API void nk_xsurf_image_free(struct nk_image *image); +#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 <string.h> +#include <stdio.h> +#include <stdlib.h> +#include <X11/Xlib.h> +#include <X11/Xutil.h> +#include <X11/Xresource.h> +#include <X11/Xlocale.h> +#include <X11/Xatom.h> + +#ifdef NK_XLIB_USE_XFT +#include <X11/Xft/Xft.h> +#endif + +#include <sys/time.h> +#include <unistd.h> +#include <time.h> + + +#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 0.02 +#endif +#ifndef NK_X11_DOUBLE_CLICK_HI +#define NK_X11_DOUBLE_CLICK_HI 0.20 +#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 + double last_button_click; + double time_of_last_frame; +} xlib; + +NK_INTERN double +nk_get_time(void) +{ + struct timeval tv; + if (gettimeofday(&tv, NULL) < 0) return 0; + return ((double)tv.tv_sec + (double)tv.tv_usec/1000000); +} + +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 +} + +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 +} + +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) +{ + int tx, ty; +#ifdef NK_XLIB_USE_XFT + XRenderColor xrc; + XftColor color; +#else + unsigned long fg = nk_color_from_byte(&cfg.r); +#endif + + 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); + /* Never degrade UTF-8 text to byte-wise XDrawString. Font creation + * guarantees a valid XFontSet before the GUI starts. */ + XmbDrawString(surf->dpy, surf->drawable, font->set, surf->gc, + tx, ty, (const char*)text, (int)len); +#endif +} + + +#ifdef NK_XLIB_INCLUDE_STB_IMAGE +NK_INTERN struct nk_image +nk_stbi_image_to_xsurf(const void *filename_or_membuf, nk_uint zero_or_membufSize) { + XSurface *surf = xlib.surf; + struct nk_image img = nk_image_id(0); + unsigned char *data; + int width, height, channels, actual_channels; + long i, isize; + XImageWithAlpha *aimage = NULL; + int depth; + + if (filename_or_membuf == NULL) goto bail; + + aimage = (XImageWithAlpha*)calloc( 1, sizeof(XImageWithAlpha) ); + if (aimage == NULL) goto bail; + img = nk_image_ptr( (void*)aimage); + + depth = DefaultDepth(surf->dpy, surf->screen); + + switch (depth){ + case 24: + channels = 4; + break; + case 16: + case 15: + channels = 2; + break; + default: + channels = 1; + break; + } + + if (zero_or_membufSize) { + data = stbi_load_from_memory((const stbi_uc *)filename_or_membuf, zero_or_membufSize, &width, &height, &actual_channels, channels); + } else { + data = stbi_load(filename_or_membuf, &width, &height, &actual_channels, channels); + } + if (data == NULL) goto bail; + + isize = width*height*channels; + + /* 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 && actual_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, + channels*8, channels*width); + img.h = height; + img.w = width; + + return img; +bail: + nk_xsurf_image_free(&img); + return nk_image_id(0); +} + +NK_API struct nk_image +nk_xsurf_load_image_from_memory(const void *membuf, nk_uint membufSize) +{ + if (membufSize == 0) { + return nk_image_id(0); + } else { + return nk_stbi_image_to_xsurf(membuf, membufSize); + } +} + +NK_API struct nk_image +nk_xsurf_load_image_from_file(char const *filename) +{ + return nk_stbi_image_to_xsurf((const void *)filename, 0); +} +#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); + } +} + +NK_API void +nk_xsurf_image_free(struct nk_image* image) +{ + XSurface *surf = xlib.surf; + XImageWithAlpha *aimage = image->handle.ptr; + if (!aimage) return; + if (aimage->ximage) XDestroyImage(aimage->ximage); + if (aimage->clipMask) XFreePixmap(surf->dpy, aimage->clipMask); + if (aimage->clipMaskGC) 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)); + if (!font) return NULL; + font->ft = XftFontOpenName(dpy, XDefaultScreen(dpy), name); + if (!font->ft) { + fprintf(stderr, "missing font: %s\n", name); + free(font); + return NULL; + } + font->ascent = font->ft->ascent; + font->descent = font->ft->descent; + font->height = font->ft->height; +#else + int n; + int j; + int missing_unicode; + int missing_jis; + char *def, **missing; + XFont *font; + font = (XFont*)calloc(1, sizeof(XFont)); + if (!font) return NULL; + missing = NULL; + n = 0; + def = NULL; + missing_unicode = 0; + missing_jis = 0; + font->set = XCreateFontSet(dpy, name, &missing, &n, &def); + for (j = 0; missing != NULL && j < n; ++j) { + if (strcmp(missing[j], "ISO10646-1") == 0) + missing_unicode = 1; + if (strcmp(missing[j], "JISX0208.1983-0") == 0) + missing_jis = 1; + } + if(missing) { + for (j = 0; j < n; ++j) + fprintf(stderr, "missing fontset charset: %s\n", missing[j]); + XFreeStringList(missing); + } + if (!font->set) { + fprintf(stderr, "cannot create multibyte font set: %s\n", name); + free(font); + return NULL; + } + if (missing_unicode && missing_jis) { + fprintf(stderr, + "font set '%s' lacks both Unicode and JIS Japanese character coverage;\n" + "install Xft development files and a Japanese-capable CJK font.\n", name); + XFreeFontSet(dpy, font->set); + free(font); + return NULL; + } + { + 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++; + } + } + 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; + + XmbTextExtents(font->set, (const char*)text, len, NULL, &r); + return (float)r.width; +#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); + xlib.time_of_last_frame = nk_get_time(); + 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; + static int insert_toggle = 0; + + 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 || *code == XK_KP_Enter) 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_Alt_L || *code == XK_Alt_R) nk_input_key(ctx, NK_KEY_ALT, 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_F1) nk_input_key(ctx, NK_KEY_F1, down); + else if (*code == XK_F2) nk_input_key(ctx, NK_KEY_F2, down); + else if (*code == XK_F3) nk_input_key(ctx, NK_KEY_F3, down); + else if (*code == XK_F4) nk_input_key(ctx, NK_KEY_F4, down); + else if (*code == XK_F5) nk_input_key(ctx, NK_KEY_F5, down); + else if (*code == XK_F6) nk_input_key(ctx, NK_KEY_F6, down); + else if (*code == XK_F7) nk_input_key(ctx, NK_KEY_F7, down); + else if (*code == XK_F8) nk_input_key(ctx, NK_KEY_F8, down); + else if (*code == XK_F9) nk_input_key(ctx, NK_KEY_F9, down); + else if (*code == XK_F10) nk_input_key(ctx, NK_KEY_F10, down); + else if (*code == XK_F11) nk_input_key(ctx, NK_KEY_F11, down); + else if (*code == XK_F12) nk_input_key(ctx, NK_KEY_F12, 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 == 'a' && (evt->xkey.state & ControlMask)) + nk_input_key(ctx,NK_KEY_TEXT_SELECT_ALL, down); + else if (*code == XK_Insert) { + if (down) insert_toggle = !insert_toggle; + if (insert_toggle) { + nk_input_key(ctx, NK_KEY_TEXT_INSERT_MODE, down); + } else { + nk_input_key(ctx, NK_KEY_TEXT_REPLACE_MODE, down); + } + } else { + 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 */ + float dt = nk_get_time() - 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_get_time(); + } 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 if (evt->xbutton.button == 8) + nk_input_button(ctx, NK_BUTTON_X1, x, y, down); + else if (evt->xbutton.button == 9) + nk_input_button(ctx, NK_BUTTON_X2, x, y, down); + 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; + + double now = nk_get_time(); + xlib.ctx.delta_time_seconds = now - xlib.time_of_last_frame; + xlib.time_of_last_frame = now; + + 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 |