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xlib_gl2: add delta_time_seconds

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PROP 65 2024-08-29 03:13:22 +00:00 committed by GitHub
parent 42b9ea7943
commit c3fe64a487
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GPG Key ID: B5690EEEBB952194
1 changed files with 14 additions and 8 deletions
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22
demo/x11_opengl2/nuklear_xlib_gl2.h
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@ -46,10 +46,10 @@ NK_API void nk_x11_shutdown(void);
#include <GL/gl.h> #include <GL/gl.h>
#ifndef NK_X11_DOUBLE_CLICK_LO #ifndef NK_X11_DOUBLE_CLICK_LO
#define NK_X11_DOUBLE_CLICK_LO 20 #define NK_X11_DOUBLE_CLICK_LO 0.02
#endif #endif
#ifndef NK_X11_DOUBLE_CLICK_HI #ifndef NK_X11_DOUBLE_CLICK_HI
#define NK_X11_DOUBLE_CLICK_HI 200 #define NK_X11_DOUBLE_CLICK_HI 0.20
#endif #endif
struct nk_x11_vertex { struct nk_x11_vertex {
@ -71,15 +71,16 @@ static struct nk_x11 {
Cursor cursor; Cursor cursor;
Display *dpy; Display *dpy;
Window win; Window win;
long last_button_click; double last_button_click;
double time_of_last_frame;
} x11; } x11;
NK_INTERN long NK_INTERN double
nk_timestamp(void) nk_get_time(void)
{ {
struct timeval tv; struct timeval tv;
if (gettimeofday(&tv, NULL) < 0) return 0; if (gettimeofday(&tv, NULL) < 0) return 0;
return (long)((long)tv.tv_sec * 1000 + (long)tv.tv_usec/1000); return ((double)tv.tv_sec + (double)tv.tv_usec/1000000);
} }
NK_INTERN void NK_INTERN void
@ -102,6 +103,10 @@ nk_x11_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_b
int width, height; int width, height;
XWindowAttributes attr; XWindowAttributes attr;
double now = nk_get_time();
x11.ctx.delta_time_seconds = now - x11.time_of_last_frame;
x11.time_of_last_frame = now;
NK_UNUSED(max_vertex_buffer); NK_UNUSED(max_vertex_buffer);
NK_UNUSED(max_element_buffer); NK_UNUSED(max_element_buffer);
@ -311,10 +316,10 @@ nk_x11_handle_event(XEvent *evt)
const int x = evt->xbutton.x, y = evt->xbutton.y; const int x = evt->xbutton.x, y = evt->xbutton.y;
if (evt->xbutton.button == Button1) { if (evt->xbutton.button == Button1) {
if (down) { /* Double-Click Button handler */ if (down) { /* Double-Click Button handler */
long dt = nk_timestamp() - x11.last_button_click; float dt = nk_get_time() - x11.last_button_click;
if (dt > NK_X11_DOUBLE_CLICK_LO && dt < NK_X11_DOUBLE_CLICK_HI) if (dt > NK_X11_DOUBLE_CLICK_LO && dt < NK_X11_DOUBLE_CLICK_HI)
nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, nk_true); nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, nk_true);
x11.last_button_click = nk_timestamp(); x11.last_button_click = nk_get_time();
} else nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, nk_false); } else nk_input_button(ctx, NK_BUTTON_DOUBLE, x, y, nk_false);
nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down); nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down);
} else if (evt->xbutton.button == Button2) } else if (evt->xbutton.button == Button2)
@ -363,6 +368,7 @@ nk_x11_init(Display *dpy, Window win)
nk_buffer_init_default(&x11.ogl.cmds); nk_buffer_init_default(&x11.ogl.cmds);
nk_init_default(&x11.ctx, 0); nk_init_default(&x11.ctx, 0);
x11.time_of_last_frame = nk_get_time();
return &x11.ctx; return &x11.ctx;
} }