distribution/packages/graphics/SDL2/patches/RK3566/0004-fix-touch-mouse.patch

diff -rupN SDL2.orig/src/events/SDL_touch.c SDL2-2.28.1/src/events/SDL_touch.c
--- SDL2.orig/src/events/SDL_touch.c	2023-07-01 17:04:05.000000000 +0000
+++ SDL2-2.28.1/src/events/SDL_touch.c	2023-07-26 00:04:30.039436068 +0000
@@ -34,6 +34,7 @@ static SDL_Touch **SDL_touchDevices = NU
 #define SYNTHESIZE_TOUCH_TO_MOUSE 1
 
 #if SYNTHESIZE_TOUCH_TO_MOUSE
+static SDL_bool cursor_init = SDL_FALSE;
 static SDL_bool finger_touching = SDL_FALSE;
 static SDL_FingerID track_fingerid;
 static SDL_TouchID track_touchid;
@@ -245,6 +246,11 @@ int SDL_SendTouch(SDL_TouchID id, SDL_Fi
         return -1;
     }
 
+    if (!window) {
+        // Fallback to the main application window.
+        window = SDL_GetWindowFromID(1);
+    }
+
     mouse = SDL_GetMouse();
 
 #if SYNTHESIZE_TOUCH_TO_MOUSE
@@ -259,6 +265,13 @@ int SDL_SendTouch(SDL_TouchID id, SDL_Fi
             /* FIXME: maybe we should only restrict to a few SDL_TouchDeviceType */
             if (id != SDL_MOUSE_TOUCHID) {
                 if (window) {
+                    if (cursor_init == SDL_FALSE) {
+                        // TODO - Initialization hack to reset cursor position to <0, 0>
+                        SDL_SendMouseMotion(window, 0, SDL_TRUE, -window->w, -window->h);
+                        mouse->x = 0; mouse->y = 0;
+                        x = 0.0f; y = 0.0f;
+                        cursor_init = SDL_TRUE;
+                    }
                     if (down) {
                         if (finger_touching == SDL_FALSE) {
                             int pos_x = (int)(x * (float)window->w);
@@ -275,12 +288,12 @@ int SDL_SendTouch(SDL_TouchID id, SDL_Fi
                             if (pos_y > window->h - 1) {
                                 pos_y = window->h - 1;
                             }
-                            SDL_SendMouseMotion(window, SDL_TOUCH_MOUSEID, 0, pos_x, pos_y);
-                            SDL_SendMouseButton(window, SDL_TOUCH_MOUSEID, SDL_PRESSED, SDL_BUTTON_LEFT);
+				SDL_SendMouseMotion(window, 0, 0, pos_x, pos_y);
+				SDL_SendMouseButton(window, 0, SDL_PRESSED, SDL_BUTTON_LEFT);
                         }
                     } else {
                         if (finger_touching == SDL_TRUE && track_touchid == id && track_fingerid == fingerid) {
-                            SDL_SendMouseButton(window, SDL_TOUCH_MOUSEID, SDL_RELEASED, SDL_BUTTON_LEFT);
+				SDL_SendMouseButton(window, 0, SDL_RELEASED, SDL_BUTTON_LEFT);
                         }
                     }
                 }
@@ -374,6 +387,11 @@ int SDL_SendTouchMotion(SDL_TouchID id,
         return -1;
     }
 
+    if (!window) {
+        // Fallback to the main application window.
+        window = SDL_GetWindowFromID(1);
+    }
+
     mouse = SDL_GetMouse();
 
 #if SYNTHESIZE_TOUCH_TO_MOUSE
@@ -397,7 +415,7 @@ int SDL_SendTouchMotion(SDL_TouchID id,
                         if (pos_y > window->h - 1) {
                             pos_y = window->h - 1;
                         }
-                        SDL_SendMouseMotion(window, SDL_TOUCH_MOUSEID, 0, pos_x, pos_y);
+			SDL_SendMouseMotion(window, 0, 0, pos_x, pos_y);
                     }
                 }
             }