Add transparent overlay window (#4746)

src/widgets/splits/Split.cpp

@@ -33,6 +33,7 @@
 #include "widgets/helper/ResizingTextEdit.hpp"
 #include "widgets/helper/SearchPopup.hpp"
 #include "widgets/Notebook.hpp"
+#include "widgets/OverlayWindow.hpp"
 #include "widgets/Scrollbar.hpp"
 #include "widgets/splits/DraggedSplit.hpp"
 #include "widgets/splits/SplitContainer.hpp"
@@ -765,6 +766,47 @@ void Split::addShortcuts()
              }
              return "";
          }},
+        {"popupOverlay",
+         [this](const auto &) -> QString {
+             this->showOverlayWindow();
+             return {};
+         }},
+        {"toggleOverlayInertia",
+         [this](const auto &args) -> QString {
+             if (args.empty())
+             {
+                 return "No arguments provided to toggleOverlayInertia "
+                        "(expected one)";
+             }
+             const auto &arg = args.front();
+
+             if (arg == "this")
+             {
+                 if (this->overlayWindow_)
+                 {
+                     this->overlayWindow_->toggleInertia();
+                 }
+                 return {};
+             }
+             if (arg == "thisOrAll")
+             {
+                 if (this->overlayWindow_)
+                 {
+                     this->overlayWindow_->toggleInertia();
+                 }
+                 else
+                 {
+                     getApp()->getWindows()->toggleAllOverlayInertia();
+                 }
+                 return {};
+             }
+             if (arg == "all")
+             {
+                 getApp()->getWindows()->toggleAllOverlayInertia();
+                 return {};
+             }
+             return {};
+         }},
     };
 
     this->shortcuts_ = getApp()->getHotkeys()->shortcutsForCategory(
@@ -1104,6 +1146,20 @@ void Split::popup()
     window.show();
 }
 
+OverlayWindow *Split::overlayWindow()
+{
+    return this->overlayWindow_.data();
+}
+
+void Split::showOverlayWindow()
+{
+    if (!this->overlayWindow_)
+    {
+        this->overlayWindow_ = new OverlayWindow(this->getIndirectChannel());
+    }
+    this->overlayWindow_->show();
+}
+
 void Split::clear()
 {
     this->view_->clearMessages();

src/widgets/splits/Split.hpp

@@ -21,6 +21,7 @@ class SplitInput;
 class SplitContainer;
 class SplitOverlay;
 class SelectChannelDialog;
+class OverlayWindow;
 
 // Each ChatWidget consists of three sub-elements that handle their own part of
 // the chat widget: ChatWidgetHeader
@@ -80,6 +81,8 @@ public:
     // This is called on window focus lost
     void unpause();
 
+    OverlayWindow *overlayWindow();
+
     static pajlada::Signals::Signal<Qt::KeyboardModifiers>
         modifierStatusChanged;
     static Qt::KeyboardModifiers modifierStatus;
@@ -158,6 +161,8 @@ private:
     SplitInput *const input_;
     SplitOverlay *const overlay_;
 
+    QPointer<OverlayWindow> overlayWindow_;
+
     QPointer<SelectChannelDialog> selectChannelDialog_;
 
     pajlada::Signals::Connection channelIDChangedConnection_;
@@ -179,6 +184,7 @@ public slots:
     void explainMoving();
     void explainSplitting();
     void popup();
+    void showOverlayWindow();
     void clear();
     void openInBrowser();
     void openModViewInBrowser();

src/widgets/splits/SplitHeader.cpp

@@ -390,6 +390,9 @@ std::unique_ptr<QMenu> SplitHeader::createMainMenu()
     menu->addAction(
         "Popup", this->split_, &Split::popup,
         h->getDisplaySequence(HotkeyCategory::Window, "popup", {{"split"}}));
+    menu->addAction(
+        "Popup overlay", this->split_, &Split::showOverlayWindow,
+        h->getDisplaySequence(HotkeyCategory::Split, "popupOverlay"));
     menu->addAction(
         "Search", this->split_,
         [this] {