Implement horizontal scrolling with Shift+Scroll

This is standard scrolling behaviour in most applications.
6 years ago · 1963cc59be
parent 3d8ea352d1
commit 1963cc59be
1 changed files with 7 additions and 0 deletions
--- a/imgui.cpp
+++ b/imgui.cpp
@ -3296,6 +3296,13 @@ void ImGui::UpdateMouseWheel()
            window->Size *= scale;
            window->SizeFull *= scale;
        }
+        else if (!g.IO.KeyCtrl && g.IO.KeyShift && scroll_allowed)
+        {
+            // Mouse wheel horizontal scrolling
+            float scroll_amount = 5 * scroll_window->CalcFontSize();
+            scroll_amount = (float)(int)ImMin(scroll_amount, (scroll_window->ContentsRegionRect.GetWidth() + scroll_window->WindowPadding.x * 2.0f) * 0.67f);
+            SetWindowScrollX(scroll_window, scroll_window->Scroll.x - g.IO.MouseWheel * scroll_amount);
+        }
        else if (!g.IO.KeyCtrl && scroll_allowed)
        {
            // Mouse wheel vertical scrolling