use zaplib::*;
use crate::scrollbar::*;
use crate::scrollview::*;
use crate::tab::*;
#[derive(Clone)]
pub struct TabControl {
pub tabs_view: ScrollView,
pub tabs: Elements<usize, Tab, Tab>,
pub drag_tab_view: View,
pub drag_tab: Tab,
pub page_view: View,
pub hover: DrawColor,
pub tab_fill: DrawColor,
pub _dragging_tab: Option<(FingerMoveEvent, usize)>,
pub _tab_id_alloc: usize,
pub _tab_now_selected: Option<usize>,
pub _tab_last_selected: Option<usize>,
pub _focussed: bool,
}
#[derive(Clone, PartialEq)]
pub enum TabControlEvent {
None,
TabDragMove { fe: FingerMoveEvent, tab_id: usize },
TabDragEnd { fe: FingerUpEvent, tab_id: usize },
TabSelect { tab_id: usize },
TabClose { tab_id: usize },
}
const COLOR_BG_NORMAL: Vec4 = vec4(52.0 / 255.0, 52.0 / 255.0, 52.0 / 255.0, 1.0);
impl TabControl {
pub fn new(cx: &mut Cx) -> Self {
Self {
tabs_view: ScrollView::new()
.with_scroll_h(ScrollBar::new(cx).with_bar_size(8.0).with_smoothing(0.15).with_use_vertical_finger_scroll(true)),
page_view: View::new(),
tabs: Elements::new(Tab::new(cx)),
drag_tab: Tab::new(cx).with_draw_depth(10.0),
drag_tab_view: View::new().with_is_overlay(true),
hover: DrawColor { color: Vec4::color("purple"), ..DrawColor::new(cx, DrawColorShader::Default(location_hash!())) },
tab_fill: DrawColor::new(cx, DrawColorShader::Default(location_hash!())),
_dragging_tab: None,
_tab_now_selected: None,
_tab_last_selected: None,
_focussed: false,
_tab_id_alloc: 0,
}
}
pub fn handle_tab_control(&mut self, cx: &mut Cx, event: &mut Event) -> TabControlEvent {
let mut tab_control_event = TabControlEvent::None;
self.tabs_view.handle_scroll_view(cx, event);
for (id, tab) in self.tabs.enumerate() {
match tab.handle_tab(cx, event) {
TabEvent::Select => {
self.page_view.redraw_view(cx);
tab_control_event = TabControlEvent::TabSelect { tab_id: *id }
}
TabEvent::DragMove(fe) => {
self._dragging_tab = Some((fe.clone(), *id));
self.tabs_view.redraw_view(cx);
self.drag_tab_view.redraw_view(cx);
tab_control_event = TabControlEvent::TabDragMove { fe, tab_id: *id };
}
TabEvent::DragEnd(fe) => {
self._dragging_tab = None;
self.drag_tab_view.redraw_view(cx);
tab_control_event = TabControlEvent::TabDragEnd { fe, tab_id: *id };
}
TabEvent::Closing => {
if tab.selected() {
let next_sel = if *id == self._tab_id_alloc - 1 {
if *id > 0 {
*id - 1
} else {
*id
}
} else {
*id + 1
};
if *id != next_sel {
tab_control_event = TabControlEvent::TabSelect { tab_id: next_sel };
}
}
}
TabEvent::Close => {
tab_control_event = TabControlEvent::TabClose { tab_id: *id };
}
_ => (),
}
}
match tab_control_event {
TabControlEvent::TabSelect { tab_id } => {
self._focussed = true;
for (id, tab) in self.tabs.enumerate() {
if tab_id != *id {
tab.set_tab_selected(cx, false);
tab.set_tab_focus(cx, true);
}
}
}
TabControlEvent::TabClose { .. } => {
self.tabs.clear(cx, |_, _| ());
}
_ => (),
};
tab_control_event
}
pub fn close_tab(&self, cx: &mut Cx, tab_id: usize) {
if let Some(tab) = self.tabs.get(tab_id) {
tab.close_tab(cx);
}
}
pub fn get_tab_rects(&mut self, cx: &Cx) -> Vec<Rect> {
let mut rects = Vec::new();
for tab in self.tabs.iter() {
rects.push(tab.get_tab_rect(cx))
}
rects
}
pub fn set_tab_control_focus(&mut self, cx: &mut Cx, focus: bool) {
self._focussed = focus;
for tab in self.tabs.iter() {
tab.set_tab_focus(cx, focus);
}
}
pub fn get_tabs_view_rect(&mut self, cx: &Cx) -> Rect {
self.tabs_view.get_rect(cx)
}
pub fn get_content_drop_rect(&mut self, cx: &Cx) -> Rect {
self.page_view.get_rect(cx)
}
pub fn begin_tabs(&mut self, cx: &mut Cx) -> ViewRedraw {
if self.tabs_view.begin_view(cx, Layout { walk: Walk::wh(Width::Fill, Height::Compute), ..Layout::default() }).is_err() {
return Err(());
}
self._tab_now_selected = None;
self._tab_id_alloc = 0;
Ok(())
}
pub fn get_draw_tab(&mut self, cx: &mut Cx, label: &str, selected: bool ) -> &mut Tab {
let new_tab = self.tabs.get(self._tab_id_alloc).is_none();
let tab = self.tabs.get_draw(cx, self._tab_id_alloc, |_cx, tmpl| tmpl.clone());
if selected {
self._tab_now_selected = Some(self._tab_id_alloc);
}
self._tab_id_alloc += 1;
tab.label = label.to_string();
if new_tab {
tab.set_tab_state(cx, selected, self._focussed);
} else {
tab.set_tab_selected(cx, selected);
}
tab
}
pub fn draw_tab(&mut self, cx: &mut Cx, label: &str, selected: bool ) {
let tab = self.get_draw_tab(cx, label, selected );
tab.draw_tab(cx);
}
pub fn end_tabs(&mut self, cx: &mut Cx) {
self.tab_fill.color = COLOR_BG_NORMAL;
self.tab_fill.quad.draw_quad_walk(cx, Walk::wh(Width::Fill, Height::Fill));
self.tabs.sweep(cx, |_, _| ());
if let Some((fe, id)) = &self._dragging_tab {
if let Ok(()) = self.drag_tab_view.begin_view(cx, Layout::abs_origin_zero()) {
self.drag_tab.abs_origin = Some(Vec2 { x: fe.abs.x - fe.rel_start.x, y: fe.abs.y - fe.rel_start.y });
let origin_tab = self.tabs.get_draw(cx, *id, |_cx, tmpl| tmpl.clone());
self.drag_tab.label = origin_tab.label.clone();
self.drag_tab.draw_tab(cx);
self.drag_tab_view.end_view(cx);
}
}
self.tabs_view.end_view(cx);
if self._tab_now_selected != self._tab_last_selected {
if let Some(tab_id) = self._tab_now_selected {
if let Some(tab) = self.tabs.get(tab_id) {
let tab_rect = tab.area().get_rect_for_first_instance(cx);
self.tabs_view.scroll_into_view_abs(cx, tab_rect);
}
}
self._tab_last_selected = self._tab_now_selected;
}
}
pub fn begin_tab_page(&mut self, cx: &mut Cx) -> ViewRedraw {
cx.turtle_new_line();
self.page_view.begin_view(cx, Layout::default())
}
pub fn end_tab_page(&mut self, cx: &mut Cx) {
self.page_view.end_view(cx);
}
}