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Diffstat (limited to '3rdparty/SDL2/src/events/SDL_touch.c')
-rw-r--r--3rdparty/SDL2/src/events/SDL_touch.c365
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: */