Fixed command modifier on macOS
Deve
Sam Lantinga
parent
cdf312c83d
commit
7e1088167a
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@ -177,209 +177,49 @@
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@end
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/* This is a helper function for HandleModifierSide. This
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* function reverts back to behavior before the distinction between
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* sides was made.
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*/
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static void
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HandleNonDeviceModifier(unsigned int device_independent_mask,
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unsigned int oldMods,
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unsigned int newMods,
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SDL_Scancode scancode)
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{
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unsigned int oldMask, newMask;
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/* Isolate just the bits we care about in the depedent bits so we can
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* figure out what changed
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*/
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oldMask = oldMods & device_independent_mask;
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newMask = newMods & device_independent_mask;
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if (oldMask && oldMask != newMask) {
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SDL_SendKeyboardKey(SDL_RELEASED, scancode);
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} else if (newMask && oldMask != newMask) {
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SDL_SendKeyboardKey(SDL_PRESSED, scancode);
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}
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}
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/* This is a helper function for HandleModifierSide.
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* This function sets the actual SDL_PrivateKeyboard event.
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*/
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static void
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HandleModifierOneSide(unsigned int oldMods, unsigned int newMods,
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SDL_Scancode scancode,
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unsigned int sided_device_dependent_mask)
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{
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unsigned int old_dep_mask, new_dep_mask;
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/* Isolate just the bits we care about in the depedent bits so we can
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* figure out what changed
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*/
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old_dep_mask = oldMods & sided_device_dependent_mask;
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new_dep_mask = newMods & sided_device_dependent_mask;
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/* We now know that this side bit flipped. But we don't know if
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* it went pressed to released or released to pressed, so we must
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* find out which it is.
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*/
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if (new_dep_mask && old_dep_mask != new_dep_mask) {
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SDL_SendKeyboardKey(SDL_PRESSED, scancode);
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} else {
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SDL_SendKeyboardKey(SDL_RELEASED, scancode);
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}
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}
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/* This is a helper function for DoSidedModifiers.
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* This function will figure out if the modifier key is the left or right side,
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* e.g. left-shift vs right-shift.
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*/
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static void
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HandleModifierSide(int device_independent_mask,
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unsigned int oldMods, unsigned int newMods,
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SDL_Scancode left_scancode,
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SDL_Scancode right_scancode,
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unsigned int left_device_dependent_mask,
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unsigned int right_device_dependent_mask)
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{
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unsigned int device_dependent_mask = (left_device_dependent_mask |
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right_device_dependent_mask);
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unsigned int diff_mod;
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/* On the basis that the device independent mask is set, but there are
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* no device dependent flags set, we'll assume that we can't detect this
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* keyboard and revert to the unsided behavior.
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*/
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if ((device_dependent_mask & newMods) == 0) {
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/* Revert to the old behavior */
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HandleNonDeviceModifier(device_independent_mask, oldMods, newMods, left_scancode);
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return;
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}
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/* XOR the previous state against the new state to see if there's a change */
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diff_mod = (device_dependent_mask & oldMods) ^
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(device_dependent_mask & newMods);
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if (diff_mod) {
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/* A change in state was found. Isolate the left and right bits
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* to handle them separately just in case the values can simulataneously
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* change or if the bits don't both exist.
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*/
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if (left_device_dependent_mask & diff_mod) {
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HandleModifierOneSide(oldMods, newMods, left_scancode, left_device_dependent_mask);
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}
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if (right_device_dependent_mask & diff_mod) {
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HandleModifierOneSide(oldMods, newMods, right_scancode, right_device_dependent_mask);
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}
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}
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}
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/* This is a helper function for DoSidedModifiers.
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* This function will release a key press in the case that
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* it is clear that the modifier has been released (i.e. one side
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* can't still be down).
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*/
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static void
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ReleaseModifierSide(unsigned int device_independent_mask,
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unsigned int oldMods, unsigned int newMods,
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SDL_Scancode left_scancode,
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SDL_Scancode right_scancode,
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unsigned int left_device_dependent_mask,
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unsigned int right_device_dependent_mask)
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{
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unsigned int device_dependent_mask = (left_device_dependent_mask |
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right_device_dependent_mask);
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/* On the basis that the device independent mask is set, but there are
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* no device dependent flags set, we'll assume that we can't detect this
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* keyboard and revert to the unsided behavior.
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*/
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if ((device_dependent_mask & oldMods) == 0) {
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/* In this case, we can't detect the keyboard, so use the left side
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* to represent both, and release it.
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*/
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SDL_SendKeyboardKey(SDL_RELEASED, left_scancode);
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return;
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}
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/*
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* This could have been done in an if-else case because at this point,
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* we know that all keys have been released when calling this function.
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* But I'm being paranoid so I want to handle each separately,
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* so I hope this doesn't cause other problems.
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*/
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if ( left_device_dependent_mask & oldMods ) {
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SDL_SendKeyboardKey(SDL_RELEASED, left_scancode);
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}
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if ( right_device_dependent_mask & oldMods ) {
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SDL_SendKeyboardKey(SDL_RELEASED, right_scancode);
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}
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}
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/* This function will handle the modifier keys and also determine the
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* correct side of the key.
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*/
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static void
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DoSidedModifiers(unsigned short scancode,
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unsigned int oldMods, unsigned int newMods)
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{
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/* Set up arrays for the key syms for the left and right side. */
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const SDL_Scancode left_mapping[] = {
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SDL_SCANCODE_LSHIFT,
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SDL_SCANCODE_LCTRL,
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SDL_SCANCODE_LALT,
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SDL_SCANCODE_LGUI
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};
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const SDL_Scancode right_mapping[] = {
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SDL_SCANCODE_RSHIFT,
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SDL_SCANCODE_RCTRL,
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SDL_SCANCODE_RALT,
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SDL_SCANCODE_RGUI
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};
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/* Set up arrays for the device dependent masks with indices that
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* correspond to the _mapping arrays
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*/
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const unsigned int left_device_mapping[] = { NX_DEVICELSHIFTKEYMASK, NX_DEVICELCTLKEYMASK, NX_DEVICELALTKEYMASK, NX_DEVICELCMDKEYMASK };
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const unsigned int right_device_mapping[] = { NX_DEVICERSHIFTKEYMASK, NX_DEVICERCTLKEYMASK, NX_DEVICERALTKEYMASK, NX_DEVICERCMDKEYMASK };
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unsigned int i, bit;
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/* Iterate through the bits, testing each against the old modifiers */
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for (i = 0, bit = NSEventModifierFlagShift; bit <= NSEventModifierFlagCommand; bit <<= 1, ++i) {
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unsigned int oldMask, newMask;
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oldMask = oldMods & bit;
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newMask = newMods & bit;
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/* If the bit is set, we must always examine it because the left
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* and right side keys may alternate or both may be pressed.
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*/
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if (newMask) {
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HandleModifierSide(bit, oldMods, newMods,
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left_mapping[i], right_mapping[i],
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left_device_mapping[i], right_device_mapping[i]);
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}
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/* If the state changed from pressed to unpressed, we must examine
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* the device dependent bits to release the correct keys.
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*/
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else if (oldMask && oldMask != newMask) {
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ReleaseModifierSide(bit, oldMods, newMods,
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left_mapping[i], right_mapping[i],
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left_device_mapping[i], right_device_mapping[i]);
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}
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}
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}
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static void
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HandleModifiers(_THIS, unsigned short scancode, unsigned int modifierFlags)
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{
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SDL_VideoData *data = (__bridge SDL_VideoData *) _this->driverdata;
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SDL_Scancode code = darwin_scancode_table[scancode];
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if (modifierFlags == data.modifierFlags) {
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return;
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const SDL_Scancode codes[] = {
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SDL_SCANCODE_LSHIFT,
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SDL_SCANCODE_LCTRL,
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SDL_SCANCODE_LALT,
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SDL_SCANCODE_LGUI,
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SDL_SCANCODE_RSHIFT,
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SDL_SCANCODE_RCTRL,
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SDL_SCANCODE_RALT,
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SDL_SCANCODE_RGUI,
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SDL_SCANCODE_LSHIFT,
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SDL_SCANCODE_LCTRL,
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SDL_SCANCODE_LALT,
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SDL_SCANCODE_LGUI, };
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const unsigned int modifiers[] = {
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NX_DEVICELSHIFTKEYMASK,
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NX_DEVICELCTLKEYMASK,
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NX_DEVICELALTKEYMASK,
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NX_DEVICELCMDKEYMASK,
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NX_DEVICERSHIFTKEYMASK,
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NX_DEVICERCTLKEYMASK,
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NX_DEVICERALTKEYMASK,
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NX_DEVICERCMDKEYMASK,
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NX_SHIFTMASK,
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NX_CONTROLMASK,
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NX_ALTERNATEMASK,
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NX_COMMANDMASK };
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for (int i = 0; i < 12; i++)
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{
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if (code == codes[i])
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{
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if (modifierFlags & modifiers[i])
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SDL_SendKeyboardKey(SDL_PRESSED, code);
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else
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SDL_SendKeyboardKey(SDL_RELEASED, code);
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}
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}
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DoSidedModifiers(scancode, data.modifierFlags, modifierFlags);
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data.modifierFlags = modifierFlags;
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}
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static void
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@ -579,8 +419,7 @@ Cocoa_HandleKeyEvent(_THIS, NSEvent *event)
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SDL_SendKeyboardKey(SDL_RELEASED, code);
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break;
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case NSEventTypeFlagsChanged:
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/* FIXME CW 2007-08-14: check if this whole mess that takes up half of this file is really necessary */
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HandleModifiers(_this, scancode, (unsigned int)[event modifierFlags]);
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HandleModifiers(_this, scancode, (unsigned int)[event modifierFlags]);
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break;
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default: /* just to avoid compiler warnings */
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break;
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