commit 98eeaf9bc5df99d9494084d37bb9009b82b63bf3
author Sylvain Becker <sylvain.becker@gmail.com> Mon Apr 08 21:27:24 2019 +0200
committer Sylvain Becker <sylvain.becker@gmail.com> Mon Apr 08 21:27:24 2019 +0200
tree dc6928766e83472b0175b186a023c1e0be74d896
parent 9e9ef0bf36d77a8c31c451ad4a404047edece502

Fixed bug 4581 - mouse events with SDL_TOUCH_MOUSEID make window lost focus
Virtual mouse events should never leave the window or change focus for single window applications.

src/events/SDL_touch.c

diff --git a/src/events/SDL_touch.c b/src/events/SDL_touch.c
index 2c5375f..a5278d4 100644
--- a/src/events/SDL_touch.c
+++ b/src/events/SDL_touch.c
@@ -257,12 +257,18 @@
                         if (finger_touching == SDL_FALSE) {
                             int pos_x = (int)(x * (float)window->w);
                             int pos_y = (int)(y * (float)window->h);
-                            SDL_SendMouseMotion(window, SDL_TOUCH_MOUSEID, 0, pos_x, pos_y);
-                            SDL_SendMouseButton(window, SDL_TOUCH_MOUSEID, SDL_PRESSED, SDL_BUTTON_LEFT);
+                            if (pos_x >= 0 && pos_y >= 0 && pos_x < window->w && pos_y < window->h) {
+                                SDL_SendMouseMotion(window, SDL_TOUCH_MOUSEID, 0, pos_x, pos_y);
+                                SDL_SendMouseButton(window, SDL_TOUCH_MOUSEID, 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);
+                            int pos_x = (int)(x * (float)window->w);
+                            int pos_y = (int)(y * (float)window->h);
+                            if (pos_x >= 0 && pos_y >= 0 && pos_x < window->w && pos_y < window->h) {
+                                SDL_SendMouseButton(window, SDL_TOUCH_MOUSEID, SDL_RELEASED, SDL_BUTTON_LEFT);
+                            }
                         }
                     }
                 }
@@ -355,7 +361,9 @@
                     if (finger_touching == SDL_TRUE && track_touchid == id && track_fingerid == fingerid) {
                         int pos_x = (int)(x * (float)window->w);
                         int pos_y = (int)(y * (float)window->h);
-                        SDL_SendMouseMotion(window, SDL_TOUCH_MOUSEID, 0, pos_x, pos_y);
+                        if (pos_x >= 0 && pos_y >= 0 && pos_x < window->w && pos_y < window->h) {
+                            SDL_SendMouseMotion(window, SDL_TOUCH_MOUSEID, 0, pos_x, pos_y);
+                        }
                     }
                 }
             }