diff options
Diffstat (limited to 'textscreen/txt_sdl.c')
| -rw-r--r-- | textscreen/txt_sdl.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/textscreen/txt_sdl.c b/textscreen/txt_sdl.c index 5ae151e9..767c9b3e 100644 --- a/textscreen/txt_sdl.c +++ b/textscreen/txt_sdl.c @@ -63,6 +63,8 @@ static int key_mapping = 1; static TxtSDLEventCallbackFunc event_callback; static void *event_callback_data; +static int modifier_state[TXT_NUM_MODIFIERS]; + // Font we are using: static txt_font_t *font; @@ -493,6 +495,48 @@ static int MouseHasMoved(void) } } +// Examine a key press/release and update the modifier key state +// if necessary. + +static void UpdateModifierState(SDL_keysym *sym, int pressed) +{ + txt_modifier_t mod; + + switch (sym->sym) + { + case SDLK_LSHIFT: + case SDLK_RSHIFT: + mod = TXT_MOD_SHIFT; + break; + + case SDLK_LCTRL: + case SDLK_RCTRL: + mod = TXT_MOD_CTRL; + break; + + case SDLK_LALT: + case SDLK_RALT: +#if !SDL_VERSION_ATLEAST(1, 3, 0) + case SDLK_LMETA: + case SDLK_RMETA: +#endif + mod = TXT_MOD_ALT; + break; + + default: + return; + } + + if (pressed) + { + ++modifier_state[mod]; + } + else + { + --modifier_state[mod]; + } +} + signed int TXT_GetChar(void) { SDL_Event ev; @@ -522,8 +566,14 @@ signed int TXT_GetChar(void) break; case SDL_KEYDOWN: + UpdateModifierState(&ev.key.keysym, 1); + return TranslateKey(&ev.key.keysym); + case SDL_KEYUP: + UpdateModifierState(&ev.key.keysym, 0); + break; + case SDL_QUIT: // Quit = escape return 27; @@ -542,6 +592,16 @@ signed int TXT_GetChar(void) return -1; } +int TXT_GetModifierState(txt_modifier_t mod) +{ + if (mod < TXT_NUM_MODIFIERS) + { + return modifier_state[mod] > 0; + } + + return 0; +} + static const char *SpecialKeyName(int key) { switch (key) |