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Added initial ability to handle history view swipe in both directions.

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This commit is contained in:
23rd 2025-02-17 12:39:06 +03:00
parent 11d0f9db03
commit 17a10cf6bb
1 changed files with 26 additions and 4 deletions
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30
Telegram/SourceFiles/history/history_view_swipe.cpp
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@ -48,6 +48,8 @@ void SetupSwipeHandler(
ChatPaintGestureHorizontalData data;
SwipeHandlerFinishData finishByTopData;
std::optional<Qt::Orientation> orientation;
std::optional<Qt::LayoutDirection> direction;
int directionInt = 1.;
QPointF startAt;
QPointF delta;
int cursorTop = 0;
@ -75,7 +77,8 @@ void SetupSwipeHandler(
base::SafeRound(-overscrollRatio * threshold)
));
state->data.msgBareId = state->finishByTopData.msgBareId;
state->data.translation = translation;
state->data.translation = translation
* state->directionInt;
state->data.cursorTop = state->cursorTop;
update(state->data);
};
@ -90,7 +93,9 @@ void SetupSwipeHandler(
const auto processEnd = [=](std::optional<QPointF> delta = {}) {
if (state->orientation == Qt::Horizontal) {
const auto ratio = std::clamp(
delta.value_or(state->delta).x() / threshold,
delta.value_or(state->delta).x()
/ threshold
* state->directionInt,
0.,
kMaxRatio);
if ((ratio >= 1) && state->finishByTopData.callback) {
@ -108,6 +113,9 @@ void SetupSwipeHandler(
setOrientation(std::nullopt);
state->started = false;
state->reached = false;
state->direction = std::nullopt;
state->startAt = {};
state->delta = {};
};
scroll->scrolls() | rpl::start_with_next([=] {
if (state->orientation != Qt::Vertical) {
@ -119,7 +127,19 @@ void SetupSwipeHandler(
update(state->data);
};
const auto updateWith = [=](UpdateArgs args) {
if (!state->started || state->touch != args.touch) {
if (!state->started
|| state->touch != args.touch
|| !state->direction) {
state->direction = (args.delta.x() == 0)
? std::nullopt
: args.delta.x() < 0
? std::make_optional(Qt::RightToLeft)
: std::make_optional(Qt::LeftToRight);
state->directionInt = (!state->direction
|| (*state->direction) == Qt::LeftToRight)
? 1
: -1;
state->started = true;
state->touch = args.touch;
state->startAt = args.position;
@ -146,7 +166,9 @@ void SetupSwipeHandler(
}
} else if (*state->orientation == Qt::Horizontal) {
state->delta = args.delta;
const auto ratio = args.delta.x() / threshold;
const auto ratio = args.delta.x()
* state->directionInt
/ threshold;
updateRatio(ratio);
constexpr auto kResetReachedOn = 0.95;
constexpr auto kBounceDuration = crl::time(500);