Deal with plugin-initiated UI resize for CLAP

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

dgl/Window.hpp

@@ -541,7 +541,7 @@ private:
                     uint height,
                     double scaleFactor,
                     bool resizable,
-                    bool isVST3,
+                    bool usesSizeRequest,
                     bool doPostInit);
 
     DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(Window)

dgl/src/WindowPrivateData.cpp

@@ -184,7 +184,7 @@ Window::PrivateData::PrivateData(Application& a, Window* const s,
 Window::PrivateData::PrivateData(Application& a, Window* const s,
                                  const uintptr_t parentWindowHandle,
                                  const uint width, const uint height,
-                                 const double scale, const bool resizable, const bool isVST3)
+                                 const double scale, const bool resizable, const bool usesSizeRequest_)
     : app(a),
       appData(a.pData),
       self(s),
@@ -193,7 +193,7 @@ Window::PrivateData::PrivateData(Application& a, Window* const s,
       isClosed(parentWindowHandle == 0),
       isVisible(parentWindowHandle != 0 && view != nullptr),
       isEmbed(parentWindowHandle != 0),
-      usesSizeRequest(isVST3),
+      usesSizeRequest(usesSizeRequest_),
       scaleFactor(scale != 0.0 ? scale : getScaleFactorFromParent(view)),
       autoScaling(false),
       autoScaleFactor(1.0),

distrho/src/DistrhoUIPrivateData.hpp

@@ -38,10 +38,10 @@
 # define DISTRHO_UI_IS_STANDALONE 0
 #endif
 
-#ifdef DISTRHO_PLUGIN_TARGET_VST3
-# define DISTRHO_UI_IS_VST3 1
+#if defined(DISTRHO_PLUGIN_TARGET_VST3) || defined(DISTRHO_PLUGIN_TARGET_CLAP)
+# define DISTRHO_UI_USES_SIZE_REQUEST true
 #else
-# define DISTRHO_UI_IS_VST3 0
+# define DISTRHO_UI_USES_SIZE_REQUEST false
 #endif
 
 #ifdef DISTRHO_PLUGIN_TARGET_VST2
@@ -183,7 +183,7 @@ public:
                           const uint height,
                           const double scaleFactor)
         : Window(app, parentWindowHandle, width, height, scaleFactor,
-                 DISTRHO_UI_USER_RESIZABLE, DISTRHO_UI_IS_VST3, false),
+                 DISTRHO_UI_USER_RESIZABLE, DISTRHO_UI_USES_SIZE_REQUEST, false),
           ui(uiPtr),
           initializing(true),
           receivedReshapeDuringInit(false)