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Added SDL_GetScancodeFromName() and SDL_GetKeyFromName()

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This commit is contained in:
Sam Lantinga 2011-10-24 21:34:54 -04:00
parent b285f5017f
commit ee56d1a748
3 changed files with 105 additions and 6 deletions
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26
include/SDL_keyboard.h
View file

@ -111,15 +111,22 @@ extern DECLSPEC SDL_Scancode SDLCALL SDL_GetScancodeFromKey(SDL_Keycode key);
/**
* \brief Get a human-readable name for a scancode.
*
* \return A pointer to a UTF-8 string that stays valid at least until the next
* call to this function. If you need it around any longer, you must
* copy it. If the scancode doesn't have a name, this function returns
* \return A pointer to the name for the scancode.
* If the scancode doesn't have a name, this function returns
* an empty string ("").
*
* \sa SDL_Scancode
*/
extern DECLSPEC const char *SDLCALL SDL_GetScancodeName(SDL_Scancode
scancode);
extern DECLSPEC const char *SDLCALL SDL_GetScancodeName(SDL_Scancode scancode);
/**
* \brief Get a scancode from a human-readable name
*
* \return scancode, or SDL_SCANCODE_UNKNOWN if the name wasn't recognized
*
* \sa SDL_Scancode
*/
extern DECLSPEC SDL_Scancode SDLCALL SDL_GetScancodeFromName(const char *name);
/**
* \brief Get a human-readable name for a key.
@ -133,6 +140,15 @@ extern DECLSPEC const char *SDLCALL SDL_GetScancodeName(SDL_Scancode
*/
extern DECLSPEC const char *SDLCALL SDL_GetKeyName(SDL_Keycode key);
/**
* \brief Get a key code from a human-readable name
*
* \return key code, or SDLK_UNKNOWN if the name wasn't recognized
*
* \sa SDL_Keycode
*/
extern DECLSPEC SDL_Keycode SDLCALL SDL_GetKeyFromName(const char *name);
/**
* \brief Start accepting Unicode text input events.
*

83
src/events/SDL_keyboard.c
View file

@ -854,6 +854,23 @@ SDL_GetKeyFromScancode(SDL_Scancode scancode)
return keyboard->keymap[scancode];
}
SDL_Keycode SDL_GetKeycodeFromName(const char *name)
{
int i;
if (!name || !*name) {
return SDL_SCANCODE_UNKNOWN;
}
for (i = 0; i < SDL_arraysize(SDL_scancode_names); ++i) {
if (SDL_strcasecmp(name, SDL_scancode_names[i]) == 0) {
return (SDL_Scancode)i;
}
}
return SDL_SCANCODE_UNKNOWN;
}
SDL_Scancode
SDL_GetScancodeFromKey(SDL_Keycode key)
{
@ -880,6 +897,25 @@ SDL_GetScancodeName(SDL_Scancode scancode)
return "";
}
SDL_Scancode SDL_GetScancodeFromName(const char *name)
{
int i;
if (!name || !*name) {
return SDL_SCANCODE_UNKNOWN;
}
for (i = 0; i < SDL_arraysize(SDL_scancode_names); ++i) {
if (!SDL_scancode_names[i]) {
continue;
}
if (SDL_strcasecmp(name, SDL_scancode_names[i]) == 0) {
return (SDL_Scancode)i;
}
}
return SDL_SCANCODE_UNKNOWN;
}
const char *
SDL_GetKeyName(SDL_Keycode key)
{
@ -919,4 +955,51 @@ SDL_GetKeyName(SDL_Keycode key)
}
}
SDL_Keycode
SDL_GetKeyFromName(const char *name)
{
SDL_Keycode key;
/* If it's a single UTF-8 character, then that's the keycode itself */
key = *(const unsigned char *)name;
if (key >= 0xF0) {
if (SDL_strlen(name) == 4) {
int i = 0;
key = (Uint16)(name[i]&0x07) << 18;
key |= (Uint16)(name[++i]&0x3F) << 12;
key |= (Uint16)(name[++i]&0x3F) << 6;
key |= (Uint16)(name[++i]&0x3F);
return key;
}
return SDLK_UNKNOWN;
} else if (key >= 0xE0) {
if (SDL_strlen(name) == 3) {
int i = 0;
key = (Uint16)(name[i]&0x0F) << 12;
key |= (Uint16)(name[++i]&0x3F) << 6;
key |= (Uint16)(name[++i]&0x3F);
return key;
}
return SDLK_UNKNOWN;
} else if (key >= 0xC0) {
if (SDL_strlen(name) == 2) {
int i = 0;
key = (Uint16)(name[i]&0x1F) << 6;
key |= (Uint16)(name[++i]&0x3F);
return key;
}
return SDLK_UNKNOWN;
} else {
if (SDL_strlen(name) == 1) {
if (key >= 'A' && key <= 'Z') {
key += 32;
}
return key;
}
/* Get the scancode for this name, and the associated keycode */
return SDL_default_keymap[SDL_GetScancodeFromName(name)];
}
}
/* vi: set ts=4 sw=4 expandtab: */