[vlc-commits] [Git][videolan/vlc][master] qml: improve batch rendering of GridView

[Hugo Beauzée-Luyssen (@chouquette)]

Hugo Beauzée-Luyssen pushed to branch master at VideoLAN / VLC


Commits:
2395eb29 by Pierre Lamot at 2022-07-21T13:17:20+00:00
qml: improve batch rendering of GridView

Items in the grid view overlaps each other due to their shadow effect, by
grouping them every even index (vertically and horizontally), we can ensure that
items with the same Z index won't overlaps. This allows items of the same group
to be batch rendered by the engine.

- - - - -


1 changed file:

- modules/gui/qt/widgets/qml/ExpandGridView.qml


Changes:

=====================================
modules/gui/qt/widgets/qml/ExpandGridView.qml
=====================================
@@ -455,6 +455,11 @@ FocusScope {
         return i >= 0 && i < childrenList.length && typeof childrenList[i] !== "undefined"
     }
 
+    function _indexToZ(id) {
+        var rowCol = getItemRowCol(id)
+        return rowCol[0] % 2 + 2 * (rowCol[1] % 2)
+    }
+
     function _repositionItem(id, x, y) {
         var item = _getItem(id)
         console.assert(item !== undefined, "wrong child: " + id)
@@ -462,6 +467,7 @@ FocusScope {
         //theses properties are always defined in Item
         item.x = x
         item.y = y
+        item.z = _indexToZ(id)
         item.selected = selectionDelegateModel.isSelected(model.index(id, 0))
 
         return item
@@ -476,6 +482,7 @@ FocusScope {
         item.selected = selectionDelegateModel.isSelected(model.index(id, 0))
         item.x = x
         item.y = y
+        item.z = _indexToZ(id)
         item.visible = true
 
         _setItem(id, item)
@@ -490,6 +497,7 @@ FocusScope {
                         model: model.getDataAt(id),
                         x: x,
                         y: y,
+                        z: _indexToZ(id),
                         visible: true
                     })
 



View it on GitLab: https://code.videolan.org/videolan/vlc/-/commit/2395eb294e21703cb82a3a926b00cca6367de97c

-- 
View it on GitLab: https://code.videolan.org/videolan/vlc/-/commit/2395eb294e21703cb82a3a926b00cca6367de97c
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