allow for 0 sized scrollWidth/scrollHeight - browser quirk?

haxeui · Dec 14, 2023 · 4022575 · 4022575
1 parent a422c7c
commit 4022575
Showing 1 changed file with 28 additions and 9 deletions.
diff --git a/haxe/ui/backend/TextInputImpl.hx b/haxe/ui/backend/TextInputImpl.hx
@@ -45,11 +45,20 @@ class TextInputImpl extends TextDisplayImpl {
         _inputData.hscrollPos = element.scrollLeft;
         _inputData.vscrollPos = element.scrollTop;
 
-        _inputData.hscrollMax = element.scrollWidth - _width;
-        _inputData.hscrollPageSize = (_width * _inputData.hscrollMax) / element.scrollWidth;
-
-        _inputData.vscrollMax = element.scrollHeight - _height;
-        _inputData.vscrollPageSize = (_height * _inputData.vscrollMax) / element.scrollHeight;
+        if (element.scrollWidth != 0) {
+            _inputData.hscrollMax = element.scrollWidth - _width;
+            _inputData.hscrollPageSize = (_width * _inputData.hscrollMax) / element.scrollWidth;
+        } else {
+            _inputData.hscrollMax = _textWidth - _width;
+            _inputData.hscrollPageSize = (_width * _inputData.hscrollMax) / _textWidth;
+        }
+        if (element.scrollHeight != 0) {
+            _inputData.vscrollMax = element.scrollHeight - _height;
+            _inputData.vscrollPageSize = (_height * _inputData.vscrollMax) / element.scrollHeight;
+        } else {
+            _inputData.vscrollMax = _textHeight - _height;
+            _inputData.vscrollPageSize = (_height * _inputData.vscrollMax) / _textHeight;
+        }
 
         if (_inputData.onScrollCallback != null) {
             _inputData.onScrollCallback();
@@ -139,11 +148,21 @@ class TextInputImpl extends TextDisplayImpl {
         _textWidth = div.clientWidth;
         _textHeight = div.clientHeight + 2;
 
-        _inputData.hscrollMax = element.scrollWidth - _width;
-        _inputData.hscrollPageSize = (_width * _inputData.hscrollMax) / element.scrollWidth;
+        if (element.scrollWidth != 0) {
+            _inputData.hscrollMax = element.scrollWidth - _width;
+            _inputData.hscrollPageSize = (_width * _inputData.hscrollMax) / element.scrollWidth;
+        } else {
+            _inputData.hscrollMax = _textWidth - _width;
+            _inputData.hscrollPageSize = (_width * _inputData.hscrollMax) / _textWidth;
+        }
 
-        _inputData.vscrollMax = element.scrollHeight - _height;
-        _inputData.vscrollPageSize = (_height * _inputData.vscrollMax) / element.scrollHeight;
+        if (element.scrollHeight != 0) {
+            _inputData.vscrollMax = element.scrollHeight - _height;
+            _inputData.vscrollPageSize = (_height * _inputData.vscrollMax) / element.scrollHeight;
+        } else {
+            _inputData.vscrollMax = _textHeight - _height;
+            _inputData.vscrollPageSize = (_height * _inputData.vscrollMax) / _textHeight;
+        }
     }
 
     private var _selectionStartIndex:Int = 0;