diff options
Diffstat (limited to 'surfaces/vega.h')
| -rw-r--r-- | surfaces/vega.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/surfaces/vega.h b/surfaces/vega.h index 69eba0b..ba7b61f 100644 --- a/surfaces/vega.h +++ b/surfaces/vega.h @@ -2,6 +2,7 @@ #define VEGA_H #include "module.h" #include "symbols.h" +#include <poll.h> #include <stdio.h> /* Vega reads a verified Pure module by convention (docs/design/001-first-component.md): @@ -151,4 +152,23 @@ bool vega_display_show(VegaDisplay *); /* Writeback: the last frame as the display controller put it out. */ const uint32_t *vega_display_captured(const VegaDisplay *, size_t *stride); void vega_display_close(VegaDisplay *); + +/* Input from evdev: keyboards (key names and the text they type on a US + * layout), mice and touch screens (presses at a pixel of a width x height + * screen). With paths, recorded events are read from those files instead, + * positions in screen pixels. */ +typedef enum { VEGA_EVENT_KEY, VEGA_EVENT_TEXT, VEGA_EVENT_PRESS, VEGA_EVENT_WHEEL } VegaEventKind; +typedef struct { + VegaEventKind kind; + char name[24], text[8]; /* a key's name; the text it types */ + int x, y, steps; /* where a press or the wheel is; steps down (negative up) */ +} VegaEvent; +typedef struct VegaInput VegaInput; +VegaInput *vega_input_open(const char *const *paths, unsigned count, unsigned width, unsigned height); +unsigned vega_input_fds(const VegaInput *, struct pollfd *out, unsigned max); +/* What the device on fd has for us; ended: it has no more (a file read out). */ +unsigned vega_input_read(VegaInput *, int fd, VegaEvent *out, unsigned max, bool *ended); +/* Where the pointer is, and whether a mouse moved it (a finger's is not shown). */ +void vega_input_pointer(const VegaInput *, int *x, int *y, bool *shown); +void vega_input_close(VegaInput *); #endif |