kotatogram/lib_ui
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Added ability to use VerticalLayoutReorder without scroll.

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This commit is contained in:
23rd 2022-01-31 19:02:40 +03:00
parent 6af9023eb7
commit dbbec068a8
2 changed files with 14 additions and 3 deletions
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12
ui/wrap/vertical_layout_reorder.cpp
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@ -28,6 +28,10 @@ VerticalLayoutReorder::VerticalLayoutReorder(
, _scrollAnimation([=] { updateScrollCallback(); }) {
}
VerticalLayoutReorder::VerticalLayoutReorder(not_null<VerticalLayout*> layout)
: _layout(layout) {
}
void VerticalLayoutReorder::cancel() {
if (_currentWidget) {
cancelCurrent(indexOf(_currentWidget));
@ -183,7 +187,9 @@ void VerticalLayoutReorder::cancelCurrent(int index) {
}
void VerticalLayoutReorder::finishReordering() {
if (_scroll) {
_scrollAnimation.stop();
}
finishCurrent();
}
@ -281,6 +287,9 @@ auto VerticalLayoutReorder::updates() const -> rpl::producer<Single> {
}
void VerticalLayoutReorder::updateScrollCallback() {
if (!_scroll) {
return;
}
const auto delta = deltaFromEdge();
const auto oldTop = _scroll->scrollTop();
_scroll->scrollToY(oldTop + delta);
@ -293,7 +302,7 @@ void VerticalLayoutReorder::updateScrollCallback() {
}
void VerticalLayoutReorder::checkForScrollAnimation() {
if (!deltaFromEdge() || _scrollAnimation.animating()) {
if (!_scroll || !deltaFromEdge() || _scrollAnimation.animating()) {
return;
}
_scrollAnimation.start();
@ -301,6 +310,7 @@ void VerticalLayoutReorder::checkForScrollAnimation() {
int VerticalLayoutReorder::deltaFromEdge() {
Expects(_currentWidget != nullptr);
Expects(_scroll);
const auto globalPosition = _currentWidget->mapToGlobal(QPoint(0, 0));
const auto localTop = _scroll->mapFromGlobal(globalPosition).y();

3
ui/wrap/vertical_layout_reorder.h
View file

@ -31,6 +31,7 @@ public:
VerticalLayoutReorder(
not_null<VerticalLayout*> layout,
not_null<ScrollArea*> scroll);
VerticalLayoutReorder(not_null<VerticalLayout*> layout);
void start();
void cancel();
@ -68,7 +69,7 @@ private:
int deltaFromEdge();
const not_null<Ui::VerticalLayout*> _layout;
const not_null<Ui::ScrollArea*> _scroll;
Ui::ScrollArea *_scroll = nullptr;
Ui::Animations::Basic _scrollAnimation;