MPV: quick setup for load file menu action

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

plugins/Cardinal/src/EmbedWidget.cpp

@@ -208,6 +208,15 @@ void EmbedWidget::hide()
     pData->hide();
 }
 
+uintptr_t EmbedWidget::getNativeWindowId() const
+{
+   #ifdef HAVE_X11
+    return pData->window;
+   #else
+    return 0;
+   #endif
+}
+
 void EmbedWidget::step()
 {
     pData->step(getAbsoluteRect());

plugins/Cardinal/src/EmbedWidget.hpp

@@ -29,6 +29,8 @@ struct EmbedWidget : Widget {
     void embedIntoRack(uintptr_t nativeWindowId);
     void hide();
 
+    uintptr_t getNativeWindowId() const;
+
 private:
     void draw(const DrawArgs&) override {}
     void step() override;

plugins/Cardinal/src/MPV.cpp

@@ -16,9 +16,9 @@
  */
 
 #include "plugincontext.hpp"
-
 #ifndef HEADLESS
 # include "EmbedWidget.hpp"
+# include "extra/ExternalWindow.hpp"
 #endif
 
 // --------------------------------------------------------------------------------------------------------------------
@@ -54,7 +54,7 @@ struct CardinalEmbedModule : Module {
 // --------------------------------------------------------------------------------------------------------------------
 
 #ifndef HEADLESS
-struct CardinalEmbedWidget : ModuleWidget {
+struct CardinalEmbedWidget : ModuleWidget, ExternalWindow {
     CardinalEmbedModule* const module;
     CardinalPluginContext* const pcontext;
     EmbedWidget* embedWidget = nullptr;
@@ -62,6 +62,7 @@ struct CardinalEmbedWidget : ModuleWidget {
 
     CardinalEmbedWidget(CardinalEmbedModule* const m)
         : ModuleWidget(),
+          ExternalWindow(),
           module(m),
           pcontext(m != nullptr ? m->pcontext : nullptr)
     {
@@ -75,6 +76,11 @@ struct CardinalEmbedWidget : ModuleWidget {
         }
     }
 
+    ~CardinalEmbedWidget()
+    {
+        terminateAndWaitForExternalProcess();
+    }
+
     void onContextCreate(const ContextCreateEvent& e) override
     {
         ModuleWidget::onContextCreate(e);
@@ -121,6 +127,47 @@ struct CardinalEmbedWidget : ModuleWidget {
         isEmbed = false;
         embedWidget->hide();
     }
+
+    void appendContextMenu(ui::Menu* const menu) override
+    {
+        menu->addChild(new ui::MenuSeparator);
+
+        struct LoadVideoFileItem : MenuItem {
+            CardinalEmbedWidget* const self;
+
+            LoadVideoFileItem(CardinalEmbedWidget* const s)
+                : self(s)
+            {
+                text = "Load video file...";
+            }
+
+            void onAction(const event::Action&) override
+            {
+                WeakPtr<CardinalEmbedWidget> const self = this->self;
+                async_dialog_filebrowser(false, nullptr, text.c_str(), [self](char* path)
+                {
+                    if (path == nullptr)
+                        return;
+
+                    if (self != nullptr)
+                    {
+                        char winIdStr[64];
+                        std::snprintf(winIdStr, sizeof(winIdStr), "--wid=%lu",
+                                      static_cast<ulong>(self->embedWidget->getNativeWindowId()));
+                        const char* args[] = {
+                            "mpv", "--no-audio", winIdStr, path, nullptr
+                        };
+                        self->terminateAndWaitForExternalProcess();
+                        self->startExternalProcess(args);
+                    }
+
+                    std::free(path);
+                });
+            }
+        };
+
+        menu->addChild(new LoadVideoFileItem(this));
+    }
 };
 #else
 typedef ModuleWidget CardinalEmbedWidget;