improved shifting up video display when activating screen keyboard (Android)

[rocksndiamonds.git] / src / libgame / system.c

diff --git a/src/libgame/system.c b/src/libgame/system.c
index d8c79937451ab0b05fa4b517a54c225c54c5fb21..7d85f6171925be6137208f50461354d0dd751626 100644 (file)
--- a/src/libgame/system.c
+++ b/src/libgame/system.c
@@ -386,6 +386,12 @@ void InitVideoBuffer(int width, int height, int depth, boolean fullscreen)
   video.frame_delay = 0;
   video.frame_delay_value = GAME_FRAME_DELAY;
 
+  video.shifted_up = FALSE;
+  video.shifted_up_pos = 0;
+  video.shifted_up_pos_last = 0;
+  video.shifted_up_delay = 0;
+  video.shifted_up_delay_value = ONE_SECOND_DELAY / 4;
+
   SDLInitVideoBuffer(fullscreen);
 
   video.initialized = TRUE;
@@ -1511,6 +1517,38 @@ KeyMod GetKeyModStateFromEvents()
   return HandleKeyModState(KSYM_UNDEFINED, 0);
 }
 
+void StartTextInput(int x, int y, int width, int height)
+{
+#if defined(TARGET_SDL2)
+  SDL_StartTextInput();
+
+#if defined(HAS_SCREEN_KEYBOARD)
+  if (y + height > SCREEN_KEYBOARD_POS(video.height))
+  {
+    video.shifted_up_pos = y + height - SCREEN_KEYBOARD_POS(video.height);
+    video.shifted_up_delay = SDL_GetTicks();
+    video.shifted_up = TRUE;
+  }
+#endif
+#endif
+}
+
+void StopTextInput()
+{
+#if defined(TARGET_SDL2)
+  SDL_StopTextInput();
+
+#if defined(HAS_SCREEN_KEYBOARD)
+  if (video.shifted_up)
+  {
+    video.shifted_up_pos = 0;
+    video.shifted_up_delay = SDL_GetTicks();
+    video.shifted_up = FALSE;
+  }
+#endif
+#endif
+}
+
 boolean CheckCloseWindowEvent(ClientMessageEvent *event)
 {
   if (event->type != EVENT_CLIENTMESSAGE)