[client] main: new feature to increase/decrease mouse sensitivity

VERSION

@@ -1 +1 @@
-a12-229-g196b27ee9c+1
+a12-230-gbffd02b8c7+1

client/README.md

@@ -46,6 +46,8 @@ Below are a list of current key bindings:
 | <kbd>ScrLk</kbd>+<kbd>F</kbd>      | Full Screen toggle |
 | <kbd>ScrLk</kbd>+<kbd>I</kbd>      | Spice keyboard & mouse enable toggle |
 | <kbd>ScrLk</kbd>+<kbd>N</kbd>      | Toggle night vision mode (EGL renderer only!) |
+| <kbd>ScrLk</kbd>+<kbd>Insert</kbd> | Increase mouse sensitivity (in caputre mode only) |
+| <kbd>ScrLk</kbd>+<kbd>Del</kbd>    | Decrease mouse sensitivity (in caputre mode only) |
 
 ### Setting options via command line arguments
 
@@ -109,6 +111,7 @@ Command line arguments will override any options loaded from the config files.
 | input:grabKeyboard | -G    | yes             | Grab the keyboard in capture mode                                                      |
 | input:escapeKey    | -m    | 71 = ScrollLock | Specify the escape key, see https://wiki.libsdl.org/SDLScancodeLookup for valid values |
 | input:hideCursor   | -M    | yes             | Hide the local mouse cursor                                                            |
+| input:mouseSens    |       | 0               | Initial mouse sensitivity when in caputre mode (-9 to 9)                               |
 |---------------------------------------------------------------------------------------------------------------------------------------|
 
 |------------------------------------------------------------------------------------------------------------------|

client/src/config.c

@@ -234,6 +234,13 @@ static struct Option options[] =
     .type           = OPTION_TYPE_BOOL,
     .value.x_bool   = true,
   },
+  {
+    .module         = "input",
+    .name           = "mouseSens",
+    .description    = "Initial mouse sensitivity when in caputre mode (-9 to 9)",
+    .type           = OPTION_TYPE_INT,
+    .value.x_int    = 0,
+  },
 
   // spice options
   {
@@ -378,6 +385,7 @@ bool config_load(int argc, char * argv[])
   params.grabKeyboard  = option_get_bool  ("input", "grabKeyboard");
   params.escapeKey     = option_get_int   ("input", "escapeKey"   );
   params.hideMouse     = option_get_bool  ("input", "hideCursor"  );
+  params.mouseSens     = option_get_int   ("input", "mouseSens"   );
 
   if (option_get_bool("spice", "enable"))
   {

client/src/main.c

@@ -38,6 +38,7 @@ Place, Suite 330, Boston, MA 02111-1307 USA
 #include "common/debug.h"
 #include "common/crash.h"
 #include "common/KVMFR.h"
+#include "common/stringutils.h"
 #include "utils.h"
 #include "kb.h"
 #include "ll.h"
@@ -645,6 +646,8 @@ int eventFilter(void * userdata, SDL_Event * event)
         realignGuest = false;
         state.accX  = 0;
         state.accY  = 0;
+        state.sensX = 0;
+        state.sensY = 0;
 
         if (!spice_mouse_motion(x, y))
           DEBUG_ERROR("SDL_MOUSEMOTION: failed to send message");
@@ -665,6 +668,16 @@ int eventFilter(void * userdata, SDL_Event * event)
           state.accY -= y;
         }
 
+        if (serverMode && state.mouseSens != 0)
+        {
+          state.sensX += ((float)x / 10.0f) * (state.mouseSens + 10);
+          state.sensY += ((float)y / 10.0f) * (state.mouseSens + 10);
+          x = floor(state.sensX);
+          y = floor(state.sensY);
+          state.sensX -= x;
+          state.sensY -= y;
+        }
+
         if (!spice_mouse_motion(x, y))
         {
           DEBUG_ERROR("SDL_MOUSEMOTION: failed to send message");
@@ -902,10 +915,41 @@ static void toggle_input(SDL_Scancode key, void * opaque)
   );
 }
 
+static void mouse_sens_inc(SDL_Scancode key, void * opaque)
+{
+  char * msg;
+  if (state.mouseSens < 9)
+    ++state.mouseSens;
+
+  alloc_sprintf(&msg, "Sensitivity: %d", state.mouseSens);
+  app_alert(
+    LG_ALERT_INFO,
+    msg
+  );
+  free(msg);
+}
+
+static void mouse_sens_dec(SDL_Scancode key, void * opaque)
+{
+  char * msg;
+
+  if (state.mouseSens > -9)
+    --state.mouseSens;
+
+  alloc_sprintf(&msg, "Sensitivity: %d", state.mouseSens);
+  app_alert(
+    LG_ALERT_INFO,
+    msg
+  );
+  free(msg);
+}
+
 static void register_key_binds()
 {
   state.kbFS           = app_register_keybind(SDL_SCANCODE_F     , toggle_fullscreen, NULL);
   state.kbInput        = app_register_keybind(SDL_SCANCODE_I     , toggle_input     , NULL);
+  state.kbMouseSensInc = app_register_keybind(SDL_SCANCODE_INSERT, mouse_sens_inc   , NULL);
+  state.kbMouseSensDec = app_register_keybind(SDL_SCANCODE_DELETE, mouse_sens_dec   , NULL);
 }
 
 static void release_key_binds()
@@ -925,6 +969,10 @@ int run()
   state.scaleY    = 1.0f;
   state.frameTime = 1e9 / params.fpsLimit;
 
+  state.mouseSens = params.mouseSens;
+       if (state.mouseSens < -9) state.mouseSens = -9;
+  else if (state.mouseSens >  9) state.mouseSens =  9;
+
   char* XDG_SESSION_TYPE = getenv("XDG_SESSION_TYPE");
 
   if (XDG_SESSION_TYPE == NULL)
@@ -1282,9 +1330,7 @@ int main(int argc, char * argv[])
     return -1;
 
   if (params.grabKeyboard)
-  {
     SDL_SetHint(SDL_HINT_GRAB_KEYBOARD, "1");
-  }
 
   const int ret = run();
   release_key_binds();

client/src/main.h

@@ -66,6 +66,11 @@ struct AppState
 
   KeybindHandle kbFS;
   KeybindHandle kbInput;
+  KeybindHandle kbMouseSensInc;
+  KeybindHandle kbMouseSensDec;
+
+  int   mouseSens;
+  float sensX, sensY;
 };
 
 struct AppParams
@@ -103,6 +108,7 @@ struct AppParams
   unsigned int forceRendererIndex;
 
   const char * windowTitle;
+  int          mouseSens;
 };
 
 struct CBRequest