Userland: Add horizontal mouse scroll support

5 files changed, 15 insertions, 8 deletions

diff --git a/Userland/Applications/3DFileViewer/main.cpp b/Userland/Applications/3DFileViewer/main.cpp
index 996018dff1..6a660cc9a3 100644
--- a/Userland/Applications/3DFileViewer/main.cpp
+++ b/Userland/Applications/3DFileViewer/main.cpp
@@ -156,7 +156,7 @@ void GLContextWidget::mousemove_event(GUI::MouseEvent& event)
 
 void GLContextWidget::mousewheel_event(GUI::MouseEvent& event)
 {
-    if (event.wheel_delta() > 0)
+    if (event.wheel_delta_y() > 0)
         m_zoom /= 1.1f;
     else
         m_zoom *= 1.1f;
diff --git a/Userland/Applications/PDFViewer/PDFViewer.cpp b/Userland/Applications/PDFViewer/PDFViewer.cpp
index ccc79e544e..b8007a3369 100644
--- a/Userland/Applications/PDFViewer/PDFViewer.cpp
+++ b/Userland/Applications/PDFViewer/PDFViewer.cpp
@@ -75,7 +75,7 @@ void PDFViewer::mousewheel_event(GUI::MouseEvent& event)
     if (!m_document)
         return;
 
-    bool scrolled_down = event.wheel_delta() > 0;
+    bool scrolled_down = event.wheel_delta_y() > 0;
 
     if (event.ctrl()) {
         if (scrolled_down) {
diff --git a/Userland/Applications/Piano/RollWidget.cpp b/Userland/Applications/Piano/RollWidget.cpp
index 190b6d81a0..23dad13867 100644
--- a/Userland/Applications/Piano/RollWidget.cpp
+++ b/Userland/Applications/Piano/RollWidget.cpp
@@ -239,7 +239,12 @@ void RollWidget::mouseup_event([[maybe_unused]] GUI::MouseEvent& event)
 void RollWidget::mousewheel_event(GUI::MouseEvent& event)
 {
     if (event.modifiers() & KeyModifier::Mod_Shift) {
-        horizontal_scrollbar().increase_slider_by(event.wheel_delta() * horizontal_scroll_sensitivity);
+        horizontal_scrollbar().increase_slider_by(event.wheel_delta_y() * horizontal_scroll_sensitivity);
+        return;
+    }
+
+    if (event.wheel_delta_x() != 0) {
+        horizontal_scrollbar().increase_slider_by(event.wheel_delta_x() * horizontal_scroll_sensitivity);
         return;
     }
 
@@ -248,7 +253,7 @@ void RollWidget::mousewheel_event(GUI::MouseEvent& event)
         return;
     }
 
-    double multiplier = event.wheel_delta() >= 0 ? 0.5 : 2;
+    double multiplier = event.wheel_delta_y() >= 0 ? 0.5 : 2;
 
     if (m_zoom_level * multiplier > max_zoom)
         return;
diff --git a/Userland/Applications/PixelPaint/ImageEditor.cpp b/Userland/Applications/PixelPaint/ImageEditor.cpp
index a9699e131c..d4b7964f86 100644
--- a/Userland/Applications/PixelPaint/ImageEditor.cpp
+++ b/Userland/Applications/PixelPaint/ImageEditor.cpp
@@ -257,7 +257,8 @@ GUI::MouseEvent ImageEditor::event_with_pan_and_scale_applied(GUI::MouseEvent co
         event.buttons(),
         event.button(),
         event.modifiers(),
-        event.wheel_delta()
+        event.wheel_delta_x(),
+        event.wheel_delta_y(),
     };
 }
 
@@ -271,7 +272,8 @@ GUI::MouseEvent ImageEditor::event_adjusted_for_layer(GUI::MouseEvent const& eve
         event.buttons(),
         event.button(),
         event.modifiers(),
-        event.wheel_delta()
+        event.wheel_delta_x(),
+        event.wheel_delta_y(),
     };
 }
 
diff --git a/Userland/Applications/SpaceAnalyzer/TreeMapWidget.cpp b/Userland/Applications/SpaceAnalyzer/TreeMapWidget.cpp
index a90ae7841b..149baddc19 100644
--- a/Userland/Applications/SpaceAnalyzer/TreeMapWidget.cpp
+++ b/Userland/Applications/SpaceAnalyzer/TreeMapWidget.cpp
@@ -316,8 +316,8 @@ void TreeMapWidget::doubleclick_event(GUI::MouseEvent& event)
 
 void TreeMapWidget::mousewheel_event(GUI::MouseEvent& event)
 {
-    int delta = event.wheel_delta();
-    // FIXME: The wheel_delta is premultiplied in the window server, we actually want a raw value here.
+    int delta = event.wheel_delta_y();
+    // FIXME: The wheel_delta_y is premultiplied in the window server, we actually want a raw value here.
     int step_size = GUI::WindowServerConnection::the().get_scroll_step_size();
     if (delta > 0) {
         size_t step_back = delta / step_size;