Add ImGuiIO::NavInputs

resolve #12

imgui-binding/src/main/java/imgui/ImGuiIO.java

@@ -708,6 +708,36 @@ public final class ImGuiIO {
             ImGui::GetIO().KeysDown[i] = keysDown[i];
     */
 
+    /**
+     * Gamepad inputs. Cleared back to zero by EndFrame(). Keyboard keys will be auto-mapped and be written here by NewFrame().
+     */
+    public native void getNavInputs(float[] buff); /*
+        for (int i = 0; i < ImGuiNavInput_COUNT; i++)
+            buff[i] = ImGui::GetIO().NavInputs[i];
+    */
+
+    /**
+     * Gamepad inputs. Cleared back to zero by EndFrame(). Keyboard keys will be auto-mapped and be written here by NewFrame().
+     */
+    public native float getNavInputs(int idx); /*
+        return ImGui::GetIO().NavInputs[idx];
+    */
+
+    /**
+     * Gamepad inputs. Cleared back to zero by EndFrame(). Keyboard keys will be auto-mapped and be written here by NewFrame().
+     */
+    public native void setNavInputs(int idx, float input); /*
+        ImGui::GetIO().NavInputs[idx] = input;
+    */
+
+    /**
+     * Gamepad inputs. Cleared back to zero by EndFrame(). Keyboard keys will be auto-mapped and be written here by NewFrame().
+     */
+    public native void setNavInputs(float[] navInputs); /*
+        for (int i = 0; i < ImGuiNavInput_COUNT; i++)
+            ImGui::GetIO().NavInputs[i] = navInputs[i];
+    */
+
     //------------------------------------------------------------------
     // Output - Updated by NewFrame() or EndFrame()/Render()
     // (when reading from the io.WantCaptureMouse, io.WantCaptureKeyboard flags to dispatch your inputs, it is

imgui-binding/src/main/java/imgui/flag/ImGuiNavInput.java

@@ -69,4 +69,30 @@ public final class ImGuiNavInput {
      * e.g. R1 or R2 (PS4), RB or RT (Xbox), R or ZL (Switch)
      */
     public static final int TweakFast = 15;
+
+    // [Internal] Don't use directly! This is used internally to differentiate keyboard from gamepad inputs for behaviors that require to differentiate them.
+    // Keyboard behavior that have no corresponding gamepad mapping (e.g. CTRL+TAB) will be directly reading from io.KeysDown[] instead of io.NavInputs[].
+
+    /**
+     * Toggle menu.
+     */
+    public static final int KeyMenu = 16;
+    /**
+     * Move left.
+     */
+    public static final int KeyLeft = 17;
+    /**
+     * Move right.
+     */
+    public static final int KeyRight = 18;
+    /**
+     * Move up.
+     */
+    public static final int KeyUp = 19;
+    /**
+     * Move down.
+     */
+    public static final int KeyDown = 20;
+
+    public static final int COUNT = 21;
 }