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69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
/*
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* vm_event.c
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*/
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#include "vm_event.h"
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/*
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* Look through all of the events that are queued up and, whatever we
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* need to do for them, do that.
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*/
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void
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vm_event_poll(vm_screen *scr)
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{
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vm_event ev;
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ev.screen = scr;
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while (SDL_PollEvent(&ev.event)) {
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if (ev.event.type == SDL_KEYDOWN || ev.event.type == SDL_KEYUP) {
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vm_event_keyboard(&ev);
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}
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}
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}
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/*
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* Handle any keyboard events from the event queue. Those would be
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* things like pressing a key, releasing a key... boring stuff, really.
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*/
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void
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vm_event_keyboard(vm_event *ev)
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{
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char ch;
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ch = '\0';
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// The sym field is of type SDL_Keycode; this type, however,
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// maps roughly to Unicode, which of course maps roughly to
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// ASCII in the low range.
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ch = (char)ev->event.key.keysym.sym;
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// If we had shift pressed, we need to uppercase the
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// character.
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if (ev->event.key.keysym.mod & KMOD_LSHIFT ||
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ev->event.key.keysym.mod & KMOD_RSHIFT
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) {
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ch = toupper(ch);
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}
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switch (ev->event.type) {
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case SDL_KEYDOWN:
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ev->screen->dirty = true;
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ev->screen->key_pressed = true;
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ev->screen->last_key = ch;
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break;
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case SDL_KEYUP:
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// Note we do not erase the last_key value.
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ev->screen->key_pressed = false;
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if (ch == SDLK_ESCAPE) {
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ev->screen->should_exit = true;
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}
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break;
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default:
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break;
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}
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}
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