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Merge branch 'drunkonhotcoco/issue_1204_chat_scroll_fix' into 'master'

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Added fix for Issue #1204 - Incorrect scrolling when switching between filtered tabs

See merge request veloren/veloren!2514
This commit is contained in:
Marcel 2021-06-27 18:18:02 +00:00
commit f6782e21b8
1 changed files with 14 additions and 3 deletions
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17
voxygen/src/hud/chat.rs
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@ -163,6 +163,8 @@ pub struct State {
tabs_last_hover_pulse: Option<f32>,
// last chat_tab (used to see if chat tab has been changed)
prev_chat_tab: Option<ChatTab>,
//whether or not a scroll action is queued
scroll_next: bool,
}
pub enum Event {
@ -194,6 +196,7 @@ impl<'a> Widget for Chat<'a> {
ids: Ids::new(id_gen),
tabs_last_hover_pulse: None,
prev_chat_tab: None,
scroll_next: false,
}
}
@ -213,15 +216,23 @@ impl<'a> Widget for Chat<'a> {
let chat_tabs = &chat_settings.chat_tabs;
let current_chat_tab = chat_settings.chat_tab_index.and_then(|i| chat_tabs.get(i));
// Maintain scrolling.
// Maintain scrolling //
if !self.new_messages.is_empty() {
//new messages - update chat w/ them & scroll down
state.update(|s| s.messages.extend(self.new_messages.drain(..)));
ui.scroll_widget(state.ids.message_box, [0.0, std::f64::MAX]);
}
// Trigger scroll event queued from previous frame
if state.scroll_next {
ui.scroll_widget(state.ids.message_box, [0.0, std::f64::MAX]);
state.update(|s| s.scroll_next = false);
}
// Queue scroll event if switching from a different tab
if current_chat_tab != state.prev_chat_tab.as_ref() {
state.update(|s| s.prev_chat_tab = current_chat_tab.cloned());
ui.scroll_widget(state.ids.message_box, [0.0, std::f64::MAX]);
state.update(|s| s.scroll_next = true); //make scroll happen only once any filters to the messages have already been applied
}
// Empty old messages