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Break keyboard event logic out into normal/special

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This commit is contained in:
Peter Evans 2018-02-06 16:29:15 -06:00
parent fa5bfe09ae
commit 608b2259e5
2 changed files with 57 additions and 16 deletions
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2
include/vm_event.h
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@ -10,5 +10,7 @@ typedef struct {
extern void vm_event_keyboard(vm_event *);
extern void vm_event_poll(vm_screen *);
extern void vm_event_keyboard_normal(vm_event *, char);
extern void vm_event_keyboard_special(vm_event *, char);
#endif

71
src/vm_event.c
View File

@ -35,6 +35,42 @@ vm_event_keyboard(vm_event *ev)
// ASCII in the low range.
ch = (char)ev->event.key.keysym.sym;
switch (ev->event.type) {
case SDL_KEYDOWN:
ev->screen->dirty = true;
ev->screen->key_pressed = true;
vm_event_keyboard_normal(ev, ch);
break;
case SDL_KEYUP:
// Note we do not erase the last_key value.
ev->screen->key_pressed = false;
vm_event_keyboard_special(ev, ch);
break;
default:
break;
}
}
/*
* Handle the keyboard event for a normal (printable) character; this is
* basically anything alphanumeric, but also includes symbols like $#?!
* etc.
*
* This function only fires in the case of a KEYDOWN event.
*/
void
vm_event_keyboard_normal(vm_event *ev, char ch)
{
// Basically, we only care about printable characters. Sorry to be
// exclusionary to other characters! They are handled in other
// functions.
if (!isprint(ch)) {
return;
}
// If we had shift pressed, we need to uppercase the
// character.
if (ev->event.key.keysym.mod & KMOD_LSHIFT ||
@ -43,24 +79,27 @@ vm_event_keyboard(vm_event *ev)
ch = toupper(ch);
}
switch (ev->event.type) {
case SDL_KEYDOWN:
ev->screen->dirty = true;
ev->screen->key_pressed = true;
ev->screen->last_key = ch;
break;
ev->screen->last_key = ch;
}
case SDL_KEYUP:
// Note we do not erase the last_key value.
ev->screen->key_pressed = false;
/*
* Handle keyboard events for "special" characters, which are
* essentially those which are not printable. ESC, RET, TAB...you get
* the idea.
*
* Unlike the normal event, this function should only fire in the case
* of a KEYUP event.
*/
void
vm_event_keyboard_special(vm_event *ev, char ch)
{
int mod = ev->event.key.keysym.mod;
if (ch == SDLK_ESCAPE) {
if (mod & KMOD_ALT) {
switch (ch) {
case 'q':
ev->screen->should_exit = true;
}
break;
default:
break;
break;
}
}
}