VST3: Add stubs for keyboard handling

Signed-off-by: falkTX <falktx@falktx.com>

distrho/src/DistrhoUIInternal.hpp

@@ -331,6 +331,29 @@ public:
         ui->onCharacterInput(cev);
         return ret;
     }
+
+    bool handlePluginKeyboardVST3(const bool press, const uint keychar, const uint keycode, const uint16_t mods)
+    {
+        DGL_NAMESPACE::Widget::KeyboardEvent ev;
+        ev.mod     = mods;
+        ev.press   = press;
+        ev.key     = keychar;
+        ev.keycode = keycode;
+
+        const bool ret = ui->onKeyboard(ev);
+
+        DGL_NAMESPACE::Widget::CharacterInputEvent cev;
+        cev.mod       = mods;
+        cev.keycode   = keycode;
+        cev.character = keychar;
+
+        // if shift modifier is on, convert a-z -> A-Z for character input
+        if (keychar >= 'a' && keychar <= 'z' && (mods & DGL_NAMESPACE::kModifierShift) != 0)
+            cev.character -= 'a' - 'A';
+
+        ui->onCharacterInput(cev);
+        return ret;
+    }
 #endif
 
     // -------------------------------------------------------------------

distrho/src/DistrhoUIVST3.cpp

@@ -191,16 +191,62 @@ public:
         return V3_NOT_IMPLEMENTED;
     }
 
-    v3_result onKeyDown(int16_t /*key_char*/, int16_t /*key_code*/, int16_t /*modifiers*/)
+    v3_result onKeyDown(const int16_t keychar, const int16_t keycode, const int16_t modifiers)
     {
+        d_stdout("onKeyDown %i %i %x\n", keychar, keycode, modifiers);
+        DISTRHO_SAFE_ASSERT_INT_RETURN(keychar >= 0 && keychar < 0x7f, keychar, V3_FALSE);
+
         // TODO
-        return V3_NOT_IMPLEMENTED;
+        uint dglcode = 0;
+
+        // TODO verify these
+        uint dglmods = 0;
+        if (modifiers & (1 << 0))
+            dglmods |= kModifierShift;
+        if (modifiers & (1 << 1))
+            dglmods |= kModifierAlt;
+#ifdef DISTRHO_OS_MAC
+        if (modifiers & (1 << 2))
+            dglmods |= kModifierSuper;
+        if (modifiers & (1 << 3))
+            dglmods |= kModifierControl;
+#else
+        if (modifiers & (1 << 2))
+            dglmods |= kModifierControl;
+        if (modifiers & (1 << 3))
+            dglmods |= kModifierSuper;
+#endif
+
+        return fUI.handlePluginKeyboardVST3(true, static_cast<uint>(keychar), dglcode, dglmods) ? V3_TRUE : V3_FALSE;
     }
 
-    v3_result onKeyUp(int16_t /*key_char*/, int16_t /*key_code*/, int16_t /*modifiers*/)
+    v3_result onKeyUp(const int16_t keychar, const int16_t keycode, const int16_t modifiers)
     {
+        d_stdout("onKeyDown %i %i %x\n", keychar, keycode, modifiers);
+        DISTRHO_SAFE_ASSERT_INT_RETURN(keychar >= 0 && keychar < 0x7f, keychar, V3_FALSE);
+
         // TODO
-        return V3_NOT_IMPLEMENTED;
+        uint dglcode = 0;
+
+        // TODO verify these
+        uint dglmods = 0;
+        if (modifiers & (1 << 0))
+            dglmods |= kModifierShift;
+        if (modifiers & (1 << 1))
+            dglmods |= kModifierAlt;
+#ifdef DISTRHO_OS_MAC
+        if (modifiers & (1 << 2))
+            dglmods |= kModifierSuper;
+        if (modifiers & (1 << 3))
+            dglmods |= kModifierControl;
+#else
+        if (modifiers & (1 << 2))
+            dglmods |= kModifierControl;
+        if (modifiers & (1 << 3))
+            dglmods |= kModifierSuper;
+#endif
+
+        return fUI.handlePluginKeyboardVST3(false, static_cast<uint>(keychar), dglcode, dglmods) ? V3_TRUE : V3_FALSE;
     }
 
     v3_result getSize(v3_view_rect* const rect) const noexcept