diff options
Diffstat (limited to '3rdparty/SDL2/src/events/SDL_touch.c')
-rw-r--r-- | 3rdparty/SDL2/src/events/SDL_touch.c | 365 |
1 files changed, 0 insertions, 365 deletions
diff --git a/3rdparty/SDL2/src/events/SDL_touch.c b/3rdparty/SDL2/src/events/SDL_touch.c deleted file mode 100644 index c73827c9649..00000000000 --- a/3rdparty/SDL2/src/events/SDL_touch.c +++ /dev/null @@ -1,365 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org> - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Permission is granted to anyone to use this software for any purpose, - including commercial applications, and to alter it and redistribute it - freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - 3. This notice may not be removed or altered from any source distribution. -*/ -#include "../SDL_internal.h" - -/* General touch handling code for SDL */ - -#include "SDL_assert.h" -#include "SDL_events.h" -#include "SDL_events_c.h" - - -static int SDL_num_touch = 0; -static SDL_Touch **SDL_touchDevices = NULL; - - -/* Public functions */ -int -SDL_TouchInit(void) -{ - return (0); -} - -int -SDL_GetNumTouchDevices(void) -{ - return SDL_num_touch; -} - -SDL_TouchID -SDL_GetTouchDevice(int index) -{ - if (index < 0 || index >= SDL_num_touch) { - SDL_SetError("Unknown touch device"); - return 0; - } - return SDL_touchDevices[index]->id; -} - -static int -SDL_GetTouchIndex(SDL_TouchID id) -{ - int index; - SDL_Touch *touch; - - for (index = 0; index < SDL_num_touch; ++index) { - touch = SDL_touchDevices[index]; - if (touch->id == id) { - return index; - } - } - return -1; -} - -SDL_Touch * -SDL_GetTouch(SDL_TouchID id) -{ - int index = SDL_GetTouchIndex(id); - if (index < 0 || index >= SDL_num_touch) { - SDL_SetError("Unknown touch device"); - return NULL; - } - return SDL_touchDevices[index]; -} - -static int -SDL_GetFingerIndex(const SDL_Touch * touch, SDL_FingerID fingerid) -{ - int index; - for (index = 0; index < touch->num_fingers; ++index) { - if (touch->fingers[index]->id == fingerid) { - return index; - } - } - return -1; -} - -SDL_Finger * -SDL_GetFinger(const SDL_Touch * touch, SDL_FingerID id) -{ - int index = SDL_GetFingerIndex(touch, id); - if (index < 0 || index >= touch->num_fingers) { - return NULL; - } - return touch->fingers[index]; -} - -int -SDL_GetNumTouchFingers(SDL_TouchID touchID) -{ - SDL_Touch *touch = SDL_GetTouch(touchID); - if (touch) { - return touch->num_fingers; - } - return 0; -} - -SDL_Finger * -SDL_GetTouchFinger(SDL_TouchID touchID, int index) -{ - SDL_Touch *touch = SDL_GetTouch(touchID); - if (!touch) { - return NULL; - } - if (index < 0 || index >= touch->num_fingers) { - SDL_SetError("Unknown touch finger"); - return NULL; - } - return touch->fingers[index]; -} - -int -SDL_AddTouch(SDL_TouchID touchID, const char *name) -{ - SDL_Touch **touchDevices; - int index; - - index = SDL_GetTouchIndex(touchID); - if (index >= 0) { - return index; - } - - /* Add the touch to the list of touch */ - touchDevices = (SDL_Touch **) SDL_realloc(SDL_touchDevices, - (SDL_num_touch + 1) * sizeof(*touchDevices)); - if (!touchDevices) { - return SDL_OutOfMemory(); - } - - SDL_touchDevices = touchDevices; - index = SDL_num_touch; - - SDL_touchDevices[index] = (SDL_Touch *) SDL_malloc(sizeof(*SDL_touchDevices[index])); - if (!SDL_touchDevices[index]) { - return SDL_OutOfMemory(); - } - - /* Added touch to list */ - ++SDL_num_touch; - - /* we're setting the touch properties */ - SDL_touchDevices[index]->id = touchID; - SDL_touchDevices[index]->num_fingers = 0; - SDL_touchDevices[index]->max_fingers = 0; - SDL_touchDevices[index]->fingers = NULL; - - /* Record this touch device for gestures */ - /* We could do this on the fly in the gesture code if we wanted */ - SDL_GestureAddTouch(touchID); - - return index; -} - -static int -SDL_AddFinger(SDL_Touch *touch, SDL_FingerID fingerid, float x, float y, float pressure) -{ - SDL_Finger *finger; - - if (touch->num_fingers == touch->max_fingers) { - SDL_Finger **new_fingers; - new_fingers = (SDL_Finger **)SDL_realloc(touch->fingers, (touch->max_fingers+1)*sizeof(*touch->fingers)); - if (!new_fingers) { - return SDL_OutOfMemory(); - } - touch->fingers = new_fingers; - touch->fingers[touch->max_fingers] = (SDL_Finger *)SDL_malloc(sizeof(*finger)); - if (!touch->fingers[touch->max_fingers]) { - return SDL_OutOfMemory(); - } - touch->max_fingers++; - } - - finger = touch->fingers[touch->num_fingers++]; - finger->id = fingerid; - finger->x = x; - finger->y = y; - finger->pressure = pressure; - return 0; -} - -static int -SDL_DelFinger(SDL_Touch* touch, SDL_FingerID fingerid) -{ - SDL_Finger *temp; - - int index = SDL_GetFingerIndex(touch, fingerid); - if (index < 0) { - return -1; - } - - touch->num_fingers--; - temp = touch->fingers[index]; - touch->fingers[index] = touch->fingers[touch->num_fingers]; - touch->fingers[touch->num_fingers] = temp; - return 0; -} - -int -SDL_SendTouch(SDL_TouchID id, SDL_FingerID fingerid, - SDL_bool down, float x, float y, float pressure) -{ - int posted; - SDL_Finger *finger; - - SDL_Touch* touch = SDL_GetTouch(id); - if (!touch) { - return -1; - } - - finger = SDL_GetFinger(touch, fingerid); - if (down) { - if (finger) { - /* This finger is already down */ - return 0; - } - - if (SDL_AddFinger(touch, fingerid, x, y, pressure) < 0) { - return 0; - } - - posted = 0; - if (SDL_GetEventState(SDL_FINGERDOWN) == SDL_ENABLE) { - SDL_Event event; - event.tfinger.type = SDL_FINGERDOWN; - event.tfinger.touchId = id; - event.tfinger.fingerId = fingerid; - event.tfinger.x = x; - event.tfinger.y = y; - event.tfinger.dx = 0; - event.tfinger.dy = 0; - event.tfinger.pressure = pressure; - posted = (SDL_PushEvent(&event) > 0); - } - } else { - if (!finger) { - /* This finger is already up */ - return 0; - } - - posted = 0; - if (SDL_GetEventState(SDL_FINGERUP) == SDL_ENABLE) { - SDL_Event event; - event.tfinger.type = SDL_FINGERUP; - event.tfinger.touchId = id; - event.tfinger.fingerId = fingerid; - /* I don't trust the coordinates passed on fingerUp */ - event.tfinger.x = finger->x; - event.tfinger.y = finger->y; - event.tfinger.dx = 0; - event.tfinger.dy = 0; - event.tfinger.pressure = pressure; - posted = (SDL_PushEvent(&event) > 0); - } - - SDL_DelFinger(touch, fingerid); - } - return posted; -} - -int -SDL_SendTouchMotion(SDL_TouchID id, SDL_FingerID fingerid, - float x, float y, float pressure) -{ - SDL_Touch *touch; - SDL_Finger *finger; - int posted; - float xrel, yrel, prel; - - touch = SDL_GetTouch(id); - if (!touch) { - return -1; - } - - finger = SDL_GetFinger(touch,fingerid); - if (!finger) { - return SDL_SendTouch(id, fingerid, SDL_TRUE, x, y, pressure); - } - - xrel = x - finger->x; - yrel = y - finger->y; - prel = pressure - finger->pressure; - - /* Drop events that don't change state */ - if (!xrel && !yrel && !prel) { -#if 0 - printf("Touch event didn't change state - dropped!\n"); -#endif - return 0; - } - - /* Update internal touch coordinates */ - finger->x = x; - finger->y = y; - finger->pressure = pressure; - - /* Post the event, if desired */ - posted = 0; - if (SDL_GetEventState(SDL_FINGERMOTION) == SDL_ENABLE) { - SDL_Event event; - event.tfinger.type = SDL_FINGERMOTION; - event.tfinger.touchId = id; - event.tfinger.fingerId = fingerid; - event.tfinger.x = x; - event.tfinger.y = y; - event.tfinger.dx = xrel; - event.tfinger.dy = yrel; - event.tfinger.pressure = pressure; - posted = (SDL_PushEvent(&event) > 0); - } - return posted; -} - -void -SDL_DelTouch(SDL_TouchID id) -{ - int i; - int index = SDL_GetTouchIndex(id); - SDL_Touch *touch = SDL_GetTouch(id); - - if (!touch) { - return; - } - - for (i = 0; i < touch->max_fingers; ++i) { - SDL_free(touch->fingers[i]); - } - SDL_free(touch->fingers); - SDL_free(touch); - - SDL_num_touch--; - SDL_touchDevices[index] = SDL_touchDevices[SDL_num_touch]; -} - -void -SDL_TouchQuit(void) -{ - int i; - - for (i = SDL_num_touch; i--; ) { - SDL_DelTouch(SDL_touchDevices[i]->id); - } - SDL_assert(SDL_num_touch == 0); - - SDL_free(SDL_touchDevices); - SDL_touchDevices = NULL; -} - -/* vi: set ts=4 sw=4 expandtab: */ |