Allow any window to be bounds-checked (Chatterino#4802)

Co-authored-by: Rasmus Karlsson <[email protected]>

src/CMakeLists.txt

@@ -458,6 +458,8 @@ set(SOURCE_FILES
         util/Twitch.cpp
         util/Twitch.hpp
         util/TypeName.hpp
+        util/WidgetHelpers.cpp
+        util/WidgetHelpers.hpp
         util/WindowsHelper.cpp
         util/WindowsHelper.hpp
         util/XDGDesktopFile.cpp

src/controllers/commands/CommandController.cpp

@@ -926,7 +926,7 @@ void CommandController::initialize(Settings &, Paths &paths)
             currentSplit);
         userPopup->setData(userName, channel);
         userPopup->moveTo(QCursor::pos(),
-                          BaseWindow::BoundsChecker::CursorPosition);
+                          widgets::BoundsChecking::CursorPosition);
         userPopup->show();
         return "";
     });

src/util/WidgetHelpers.cpp

@@ -0,0 +1,82 @@
+#include "util/WidgetHelpers.hpp"
+
+#include <QCursor>
+#include <QGuiApplication>
+#include <QPoint>
+#include <QScreen>
+#include <QWidget>
+
+namespace {
+
+/// Move the `window` into the `screen` geometry if it's not already in there.
+void moveWithinScreen(QWidget *window, QScreen *screen, QPoint point)
+{
+    if (screen == nullptr)
+    {
+        screen = QGuiApplication::primaryScreen();
+    }
+
+    const QRect bounds = screen->availableGeometry();
+
+    bool stickRight = false;
+    bool stickBottom = false;
+
+    const auto w = window->frameGeometry().width();
+    const auto h = window->frameGeometry().height();
+
+    if (point.x() < bounds.left())
+    {
+        point.setX(bounds.left());
+    }
+    if (point.y() < bounds.top())
+    {
+        point.setY(bounds.top());
+    }
+    if (point.x() + w > bounds.right())
+    {
+        stickRight = true;
+        point.setX(bounds.right() - w);
+    }
+    if (point.y() + h > bounds.bottom())
+    {
+        stickBottom = true;
+        point.setY(bounds.bottom() - h);
+    }
+
+    if (stickRight && stickBottom)
+    {
+        const QPoint globalCursorPos = QCursor::pos();
+        point.setY(globalCursorPos.y() - window->height() - 16);
+    }
+
+    window->move(point);
+}
+
+}  // namespace
+
+namespace chatterino::widgets {
+
+void moveWindowTo(QWidget *window, QPoint position, BoundsChecking mode)
+{
+    switch (mode)
+    {
+        case BoundsChecking::Off: {
+            window->move(position);
+        }
+        break;
+
+        case BoundsChecking::CursorPosition: {
+            moveWithinScreen(window, QGuiApplication::screenAt(QCursor::pos()),
+                             position);
+        }
+        break;
+
+        case BoundsChecking::DesiredPosition: {
+            moveWithinScreen(window, QGuiApplication::screenAt(position),
+                             position);
+        }
+        break;
+    }
+}
+
+}  // namespace chatterino::widgets

src/util/WidgetHelpers.hpp

@@ -0,0 +1,29 @@
+#pragma once
+
+class QWidget;
+class QPoint;
+class QScreen;
+
+namespace chatterino::widgets {
+
+enum class BoundsChecking {
+    /// Don't do any bounds checking (equivalent to `QWidget::move`).
+    Off,
+
+    /// Attempt to keep the window within bounds of the screen the cursor is on.
+    CursorPosition,
+
+    /// Attempt to keep the window within bounds of the screen the desired position is on.
+    DesiredPosition,
+};
+
+/// Moves the `window` to the (global) `position`
+/// while doing bounds-checking according to `mode` to ensure the window stays on one screen.
+///
+/// @param window The window to move.
+/// @param position The global position to move the window to.
+/// @param mode The desired bounds checking.
+void moveWindowTo(QWidget *window, QPoint position,
+                  BoundsChecking mode = BoundsChecking::DesiredPosition);
+
+}  // namespace chatterino::widgets

src/widgets/BaseWindow.cpp

@@ -503,28 +503,9 @@ void BaseWindow::leaveEvent(QEvent *)
     TooltipWidget::instance()->hide();
 }
 
-void BaseWindow::moveTo(QPoint point, BoundsChecker boundsChecker)
+void BaseWindow::moveTo(QPoint point, widgets::BoundsChecking mode)
 {
-    switch (boundsChecker)
-    {
-        case BoundsChecker::Off: {
-            // The bounds checker is off, *just* move the window
-            this->move(point);
-        }
-        break;
-
-        case BoundsChecker::CursorPosition: {
-            // The bounds checker is on, use the cursor position as the origin
-            this->moveWithinScreen(point, QCursor::pos());
-        }
-        break;
-
-        case BoundsChecker::DesiredPosition: {
-            // The bounds checker is on, use the desired position as the origin
-            this->moveWithinScreen(point, point);
-        }
-        break;
-    }
+    widgets::moveWindowTo(this, point, mode);
 }
 
 void BaseWindow::resizeEvent(QResizeEvent *)
@@ -580,51 +561,6 @@ void BaseWindow::showEvent(QShowEvent *)
 {
 }
 
-void BaseWindow::moveWithinScreen(QPoint point, QPoint origin)
-{
-    // move the widget into the screen geometry if it's not already in there
-    auto *screen = QApplication::screenAt(origin);
-
-    if (screen == nullptr)
-    {
-        screen = QApplication::primaryScreen();
-    }
-    const QRect bounds = screen->availableGeometry();
-
-    bool stickRight = false;
-    bool stickBottom = false;
-
-    const auto w = this->frameGeometry().width();
-    const auto h = this->frameGeometry().height();
-
-    if (point.x() < bounds.left())
-    {
-        point.setX(bounds.left());
-    }
-    if (point.y() < bounds.top())
-    {
-        point.setY(bounds.top());
-    }
-    if (point.x() + w > bounds.right())
-    {
-        stickRight = true;
-        point.setX(bounds.right() - w);
-    }
-    if (point.y() + h > bounds.bottom())
-    {
-        stickBottom = true;
-        point.setY(bounds.bottom() - h);
-    }
-
-    if (stickRight && stickBottom)
-    {
-        const QPoint globalCursorPos = QCursor::pos();
-        point.setY(globalCursorPos.y() - this->height() - 16);
-    }
-
-    this->move(point);
-}
-
 #if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
 bool BaseWindow::nativeEvent(const QByteArray &eventType, void *message,
                              qintptr *result)

src/widgets/BaseWindow.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "common/FlagsEnum.hpp"
+#include "util/WidgetHelpers.hpp"
 #include "widgets/BaseWidget.hpp"
 
 #include <pajlada/signals/signalholder.hpp>
@@ -36,17 +37,6 @@ class BaseWindow : public BaseWidget
         DisableLayoutSave = 128,
     };
 
-    enum class BoundsChecker {
-        // Don't attempt to do any "stay in screen" stuff, just move me!
-        Off,
-
-        // Attempt to keep the window within bounds of the screen the cursor is on
-        CursorPosition,
-
-        // Attempt to keep the window within bounds of the screen the desired position is on
-        DesiredPosition,
-    };
-
     enum ActionOnFocusLoss { Nothing, Delete, Close, Hide };
 
     explicit BaseWindow(FlagsEnum<Flags> flags_ = None,
@@ -65,7 +55,7 @@ class BaseWindow : public BaseWidget
     void setActionOnFocusLoss(ActionOnFocusLoss value);
     ActionOnFocusLoss getActionOnFocusLoss() const;
 
-    void moveTo(QPoint point, BoundsChecker boundsChecker);
+    void moveTo(QPoint point, widgets::BoundsChecking mode);
 
     float scale() const override;
     float qtFontScale() const;
@@ -110,11 +100,6 @@ class BaseWindow : public BaseWidget
 private:
     void init();
 
-    /**
-     *
-     **/
-    void moveWithinScreen(QPoint point, QPoint origin);
-
     void calcButtonsSizes();
     void drawCustomWindowFrame(QPainter &painter);
     void onFocusLost();

src/widgets/dialogs/EmotePopup.cpp

@@ -207,7 +207,7 @@ EmotePopup::EmotePopup(QWidget *parent)
 {
     // this->setStayInScreenRect(true);
     this->moveTo(getApp()->windows->emotePopupPos(),
-                 BaseWindow::BoundsChecker::DesiredPosition);
+                 widgets::BoundsChecking::DesiredPosition);
 
     auto *layout = new QVBoxLayout();
     this->getLayoutContainer()->setLayout(layout);

src/widgets/helper/ChannelView.cpp

@@ -1832,7 +1832,7 @@ void ChannelView::mouseMoveEvent(QMouseEvent *event)
         }
 
         tooltipWidget->moveTo(event->globalPos() + QPoint(16, 16),
-                              BaseWindow::BoundsChecker::CursorPosition);
+                              widgets::BoundsChecking::CursorPosition);
         tooltipWidget->setWordWrap(isLinkValid);
         tooltipWidget->show();
     }
@@ -2687,7 +2687,7 @@ void ChannelView::showUserInfoPopup(const QString &userName,
 
     QPoint offset(userPopup->width() / 3, userPopup->height() / 5);
     userPopup->moveTo(QCursor::pos() - offset,
-                      BaseWindow::BoundsChecker::CursorPosition);
+                      widgets::BoundsChecking::CursorPosition);
     userPopup->show();
 }
 

src/widgets/splits/SplitHeader.cpp

@@ -956,7 +956,7 @@ void SplitHeader::enterEvent(QEvent *event)
         auto pos = this->mapToGlobal(this->rect().bottomLeft()) +
                    QPoint((this->width() - tooltip->width()) / 2, 1);
 
-        tooltip->moveTo(pos, BaseWindow::BoundsChecker::CursorPosition);
+        tooltip->moveTo(pos, widgets::BoundsChecking::CursorPosition);
         tooltip->show();
     }