use crate::prelude::*;
use crate::thecontext::TheCursorIcon;
pub struct TheDropdownMenu {
id: TheId,
limiter: TheSizeLimiter,
status: Option<String>,
is_disabled: bool,
state: TheWidgetState,
options: Vec<String>,
selected: i32,
original: i32,
dim: TheDim,
is_dirty: bool,
safety_offset: Vec2<i32>,
embedded: bool,
parent_id: Option<TheId>,
overlay_offset: Vec2<i32>,
}
impl TheWidget for TheDropdownMenu {
fn new(id: TheId) -> Self
where
Self: Sized,
{
let mut limiter = TheSizeLimiter::new();
limiter.set_max_width(142);
limiter.set_max_height(20);
Self {
id,
limiter,
status: None,
is_disabled: false,
state: TheWidgetState::None,
options: vec![],
selected: 0,
original: 0,
dim: TheDim::zero(),
is_dirty: false,
safety_offset: Vec2::new(0, 0),
embedded: false,
parent_id: None,
overlay_offset: Vec2::zero(),
}
}
fn cursor_icon(&self) -> Option<TheCursorIcon> {
Some(TheCursorIcon::Hand)
}
fn set_cursor_icon(&mut self, _icon: Option<TheCursorIcon>) {
}
fn id(&self) -> &TheId {
&self.id
}
fn value(&self) -> TheValue {
TheValue::Int(self.selected)
}
fn set_value(&mut self, value: TheValue) {
if let Some(index) = value.to_i32() {
if index >= 0 && index < self.options.len() as i32 {
self.selected = index;
self.is_dirty = true;
}
}
}
fn status_text(&self) -> Option<String> {
self.status.clone()
}
fn set_status_text(&mut self, text: &str) {
self.status = Some(text.to_string());
}
fn disabled(&self) -> bool {
self.is_disabled
}
fn set_disabled(&mut self, disabled: bool) {
if disabled != self.is_disabled {
self.is_disabled = disabled;
self.is_dirty = true;
}
}
fn set_embedded(&mut self, embedded: bool) {
self.embedded = embedded;
}
fn set_parent_id(&mut self, parent_id: TheId) {
self.parent_id = Some(parent_id);
}
fn on_event(&mut self, event: &TheEvent, ctx: &mut TheContext) -> bool {
let mut redraw = false;
if self.is_disabled {
return false;
}
match event {
TheEvent::MouseDown(_coord) => {
self.is_dirty = true;
if self.state != TheWidgetState::Clicked {
self.state = TheWidgetState::Clicked;
ctx.ui.send_widget_state_changed(self.id(), self.state);
ctx.ui.set_focus(self.id());
if let Some(parent_id) = &self.parent_id {
ctx.ui.set_overlay(parent_id);
} else {
ctx.ui.set_overlay(self.id());
}
self.original = self.selected;
}
redraw = true;
}
TheEvent::MouseDragged(coord) => {
if !self.options.is_empty() {
let y: i32 = coord.y - 20 + self.safety_offset.y;
if y >= 0 {
let index = y / 20;
if index < self.options.len() as i32 && index != self.selected {
self.selected = index;
}
}
self.is_dirty = true;
redraw = true;
}
}
TheEvent::MouseUp(_coord) => {
self.is_dirty = true;
if self.state == TheWidgetState::Clicked {
self.state = TheWidgetState::None;
ctx.ui.send_widget_state_changed(self.id(), self.state);
ctx.ui.clear_overlay();
if self.selected != self.original {
ctx.ui
.send_widget_value_changed(self.id(), TheValue::Int(self.selected));
ctx.ui.send(TheEvent::IndexChanged(
self.id().clone(),
self.selected as usize,
));
}
}
redraw = true;
}
TheEvent::Hover(_coord) => {
if self.state != TheWidgetState::Clicked && !self.id().equals(&ctx.ui.hover) {
self.is_dirty = true;
ctx.ui.set_hover(self.id());
redraw = true;
}
}
_ => {}
}
redraw
}
fn dim(&self) -> &TheDim {
&self.dim
}
fn dim_mut(&mut self) -> &mut TheDim {
&mut self.dim
}
fn set_dim(&mut self, dim: TheDim, _ctx: &mut TheContext) {
if self.dim != dim {
self.dim = dim;
self.is_dirty = true;
}
}
fn limiter(&self) -> &TheSizeLimiter {
&self.limiter
}
fn limiter_mut(&mut self) -> &mut TheSizeLimiter {
&mut self.limiter
}
fn needs_redraw(&mut self) -> bool {
self.is_dirty
}
fn set_needs_redraw(&mut self, redraw: bool) {
self.is_dirty = redraw;
}
fn state(&self) -> TheWidgetState {
self.state
}
fn set_state(&mut self, state: TheWidgetState) {
self.state = state;
self.is_dirty = true;
}
fn supports_hover(&mut self) -> bool {
true
}
fn draw(
&mut self,
buffer: &mut TheRGBABuffer,
style: &mut Box<dyn TheStyle>,
ctx: &mut TheContext,
) {
if !self.dim().is_valid() {
return;
}
let stride = buffer.stride();
let mut shrinker = TheDimShrinker::zero();
let utuple: (usize, usize, usize, usize) = self.dim.to_buffer_utuple();
let mut icon_name = if self.state == TheWidgetState::Clicked && !self.embedded {
"dark_dropdown_clicked".to_string()
} else {
"dark_dropdown_normal".to_string()
};
if !self.is_disabled && !self.embedded {
if self.state != TheWidgetState::Clicked && self.id().equals(&ctx.ui.hover) {
icon_name = "dark_dropdown_hover".to_string()
}
if self.state != TheWidgetState::Clicked && self.id().equals(&ctx.ui.focus) {
icon_name = "dark_dropdown_focus".to_string()
}
}
let text_color = if self.state == TheWidgetState::Selected {
style.theme().color(SectionbarSelectedTextColor)
} else {
style.theme().color(SectionbarNormalTextColor)
};
if let Some(icon) = ctx.ui.icon(&icon_name) {
let off = if icon.dim().width == 140 { 1 } else { 0 };
let r = (
utuple.0 + off,
utuple.1 + off,
icon.dim().width as usize,
icon.dim().height as usize,
);
ctx.draw
.blend_slice(buffer.pixels_mut(), icon.pixels(), &r, stride);
}
if let Some(icon) = ctx.ui.icon("dark_dropdown_marker") {
let r = (
utuple.0 + 129,
utuple.1 + 7,
icon.dim().width as usize,
icon.dim().height as usize,
);
ctx.draw
.blend_slice(buffer.pixels_mut(), icon.pixels(), &r, stride);
}
shrinker.shrink_by(8, 0, 12, 0);
if !self.options.is_empty() {
ctx.draw.text_rect_blend(
buffer.pixels_mut(),
&self.dim.to_buffer_shrunk_utuple(&shrinker),
stride,
self.options[self.selected as usize].as_str(),
TheFontSettings {
size: 12.5,
..Default::default()
},
text_color,
TheHorizontalAlign::Left,
TheVerticalAlign::Center,
);
}
self.is_dirty = false;
}
fn draw_overlay(
&mut self,
style: &mut Box<dyn TheStyle>,
ctx: &mut TheContext,
) -> TheRGBABuffer {
let len = self.options.len();
let width = 142;
#[allow(clippy::implicit_saturating_sub)]
let height = 2 + len * 20 + (if len > 1 { len - 1 } else { 0 });
let mut dim = TheDim::new(self.dim.x, self.dim.y + 20, width as i32, height as i32);
dim.buffer_x = self.dim.x;
dim.buffer_y = self.dim.y + 20;
self.overlay_offset = Vec2::new(self.dim.x, self.dim.y + 20);
self.safety_offset = Vec2::zero();
if dim.x + width as i32 > ctx.width as i32 {
self.safety_offset.x = dim.x + width as i32 - ctx.width as i32 + 5;
dim.x -= self.safety_offset.x;
}
if dim.y + height as i32 > ctx.height as i32 {
self.safety_offset.y = dim.y + height as i32 - ctx.height as i32 + 5;
dim.y -= self.safety_offset.y;
}
let mut buffer = TheRGBABuffer::new(dim);
ctx.draw.rect(
buffer.pixels_mut(),
&(0, 0, width, height),
width,
style.theme().color(MenubarPopupBackground),
);
ctx.draw.rect_outline(
buffer.pixels_mut(),
&(0, 0, width, height),
width,
style.theme().color(MenubarPopupBorder),
);
let x = 0;
let mut y = 0;
for i in 0..len {
if i == self.selected as usize {
ctx.draw.rect(
buffer.pixels_mut(),
&(x, y, width, 21),
width,
style.theme().color(DefaultSelection),
);
}
ctx.draw.rect_outline(
buffer.pixels_mut(),
&(x, y, width, 21),
width,
style.theme().color(MenubarPopupBorder),
);
if !self.options.is_empty() {
ctx.draw.text_rect_blend(
buffer.pixels_mut(),
&(x + 8, y, width - 8, 21),
width,
self.options[i].as_str(),
TheFontSettings {
size: 12.5,
..Default::default()
},
&WHITE,
TheHorizontalAlign::Left,
TheVerticalAlign::Center,
);
}
y += 21;
}
buffer
}
fn as_drop_down_menu(&mut self) -> Option<&mut dyn TheDropdownMenuTrait> {
Some(self)
}
fn as_any(&mut self) -> &mut dyn std::any::Any {
self
}
}
pub trait TheDropdownMenuTrait: TheWidget {
fn add_option(&mut self, option: String);
fn selected_text(&self) -> String;
fn set_selected_index(&mut self, index: i32);
fn selected_index(&self) -> usize;
}
impl TheDropdownMenuTrait for TheDropdownMenu {
fn add_option(&mut self, option: String) {
self.options.push(option);
}
fn selected_index(&self) -> usize {
self.selected as usize
}
fn selected_text(&self) -> String {
self.options[self.selected as usize].clone()
}
fn set_selected_index(&mut self, index: i32) {
self.selected = index;
self.is_dirty = true;
}
}