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Diffstat (limited to 'nuklear/demo/x11/nuklear_xlib.h')
-rw-r--r--nuklear/demo/x11/nuklear_xlib.h693
1 files changed, 693 insertions, 0 deletions
diff --git a/nuklear/demo/x11/nuklear_xlib.h b/nuklear/demo/x11/nuklear_xlib.h
new file mode 100644
index 0000000..df66d78
--- /dev/null
+++ b/nuklear/demo/x11/nuklear_xlib.h
@@ -0,0 +1,693 @@
+/*
+ * Nuklear - v1.17 - public domain
+ * no warrenty implied; use at your own risk.
+ * authored from 2015-2016 by Micha Mettke
+ */
+/*
+ * ==============================================================
+ *
+ * API
+ *
+ * ===============================================================
+ */
+#ifndef NK_XLIB_H_
+#define NK_XLIB_H_
+
+#include <X11/Xlib.h>
+/* Font */
+typedef struct XFont XFont;
+NK_API XFont* nk_xfont_create(Display *dpy, const char *name);
+NK_API void nk_xfont_del(Display *dpy, XFont *font);
+
+NK_API struct nk_context* nk_xlib_init(XFont *font, Display *dpy, int screen, Window root, unsigned int w, unsigned int h);
+NK_API int nk_xlib_handle_event(Display *dpy, int screen, Window win, XEvent *evt);
+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 *font);
+
+#endif
+/*
+ * ==============================================================
+ *
+ * IMPLEMENTATION
+ *
+ * ===============================================================
+ */
+#ifdef NK_XLIB_IMPLEMENTATION
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/Xresource.h>
+#include <X11/Xlocale.h>
+
+typedef struct XSurface XSurface;
+struct XFont {
+ int ascent;
+ int descent;
+ int height;
+ XFontSet set;
+ XFontStruct *xfont;
+ struct nk_user_font handle;
+};
+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;
+ Cursor cursor;
+ Display *dpy;
+ Window root;
+} 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
+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);
+}
+
+static 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));
+ 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 = 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);
+}
+
+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 = 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);
+ } 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+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);
+}
+
+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 = 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);
+ } 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 = 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);
+}
+
+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 = 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);
+}
+
+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 = 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
+}
+
+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 = 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);
+}
+
+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 = 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);
+}
+
+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 = 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);
+}
+
+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 = 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);
+}
+
+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 = nk_color_from_byte(&cbg.r);
+ unsigned long fg = nk_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 = &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;
+
+ if (!setlocale(LC_ALL,"")) return 0;
+ if (!XSupportsLocale()) return 0;
+ if (!XSetLocaleModifiers("@im=none")) return 0;
+
+ /* 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 int
+nk_xlib_handle_event(Display *dpy, int screen, Window win, XEvent *evt)
+{
+ struct nk_context *ctx = &xlib.ctx;
+
+ /* 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_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)
+ 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 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;
+ }
+ return 0;
+}
+
+NK_API void
+nk_xlib_shutdown(void)
+{
+ nk_xsurf_del(xlib.surf);
+ nk_free(&xlib.ctx);
+ XFreeCursor(xlib.dpy, xlib.cursor);
+ nk_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, 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);
+}
+#endif