Everywhere: Use 'decrease_slider_by()' method from AbstractSlider

The same idea as 'increase_slider_by()', it helps us to avoid repeating the pattern 'set_value(value() - delta)'.
Author: https://github.com/elyse0 Commit: 086615535f Pull-request: https://github.com/SerenityOS/serenity/pull/11163 Reviewed-by: https://github.com/kleinesfilmroellchen ✅ Reviewed-by: https://github.com/metmo ✅
2025-05-25 12:32:53 +00:00 · 2021-10-31 12:27:52 -06:00 · 2021-10-31 12:27:52 -06:00 · 086615535f · 2024-07-17 21:55:24 +09:00
commit 086615535f
parent d53e1fa1fa
8 changed files with 10 additions and 10 deletions
--- a/Userland/Libraries/LibWeb/InProcessWebView.cpp
+++ b/Userland/Libraries/LibWeb/InProcessWebView.cpp
@ -269,7 +269,7 @@ void InProcessWebView::keydown_event(GUI::KeyEvent& event)
            vertical_scrollbar().increase_slider_by(frame_inner_rect().height());
            break;
        case Key_PageUp:
-            vertical_scrollbar().set_value(vertical_scrollbar().value() - frame_inner_rect().height());
+            vertical_scrollbar().decrease_slider_by(frame_inner_rect().height());
            break;
        default:
            if (!page_accepted_event) {