diff options
Diffstat (limited to 'native/src/widget/tooltip.rs')
| -rw-r--r-- | native/src/widget/tooltip.rs | 225 |
1 files changed, 134 insertions, 91 deletions
diff --git a/native/src/widget/tooltip.rs b/native/src/widget/tooltip.rs index 7989c768..c929395f 100644 --- a/native/src/widget/tooltip.rs +++ b/native/src/widget/tooltip.rs @@ -29,7 +29,7 @@ where /// The default padding of a [`Tooltip`] drawn by this renderer. const DEFAULT_PADDING: u16 = 5; - /// Creates an empty [`Tooltip`]. + /// Creates a new [`Tooltip`]. /// /// [`Tooltip`]: struct.Tooltip.html pub fn new( @@ -98,6 +98,117 @@ pub enum Position { Right, } +/// Draws a [`Tooltip`]. +pub fn draw<Renderer: crate::Renderer>( + renderer: &mut Renderer, + inherited_style: &renderer::Style, + layout: Layout<'_>, + cursor_position: Point, + viewport: &Rectangle, + position: Position, + gap: u16, + padding: u16, + style_sheet: &dyn container::StyleSheet, + layout_text: impl FnOnce(&Renderer, &layout::Limits) -> layout::Node, + draw_text: impl FnOnce( + &mut Renderer, + &renderer::Style, + Layout<'_>, + Point, + &Rectangle, + ), +) { + let bounds = layout.bounds(); + + if bounds.contains(cursor_position) { + let gap = f32::from(gap); + let style = style_sheet.style(); + + let defaults = renderer::Style { + text_color: style.text_color.unwrap_or(inherited_style.text_color), + }; + + let text_layout = layout_text( + renderer, + &layout::Limits::new(Size::ZERO, viewport.size()) + .pad(Padding::new(padding)), + ); + + let padding = f32::from(padding); + let text_bounds = text_layout.bounds(); + let x_center = bounds.x + (bounds.width - text_bounds.width) / 2.0; + let y_center = bounds.y + (bounds.height - text_bounds.height) / 2.0; + + let mut tooltip_bounds = { + let offset = match position { + Position::Top => Vector::new( + x_center, + bounds.y - text_bounds.height - gap - padding, + ), + Position::Bottom => Vector::new( + x_center, + bounds.y + bounds.height + gap + padding, + ), + Position::Left => Vector::new( + bounds.x - text_bounds.width - gap - padding, + y_center, + ), + Position::Right => Vector::new( + bounds.x + bounds.width + gap + padding, + y_center, + ), + Position::FollowCursor => Vector::new( + cursor_position.x, + cursor_position.y - text_bounds.height, + ), + }; + + Rectangle { + x: offset.x - padding, + y: offset.y - padding, + width: text_bounds.width + padding * 2.0, + height: text_bounds.height + padding * 2.0, + } + }; + + if tooltip_bounds.x < viewport.x { + tooltip_bounds.x = viewport.x; + } else if viewport.x + viewport.width + < tooltip_bounds.x + tooltip_bounds.width + { + tooltip_bounds.x = + viewport.x + viewport.width - tooltip_bounds.width; + } + + if tooltip_bounds.y < viewport.y { + tooltip_bounds.y = viewport.y; + } else if viewport.y + viewport.height + < tooltip_bounds.y + tooltip_bounds.height + { + tooltip_bounds.y = + viewport.y + viewport.height - tooltip_bounds.height; + } + + renderer.with_layer(*viewport, |renderer| { + container::draw_background(renderer, &style, tooltip_bounds); + + draw_text( + renderer, + &defaults, + Layout::with_offset( + Vector::new( + tooltip_bounds.x + padding, + tooltip_bounds.y + padding, + ), + &text_layout, + ), + cursor_position, + viewport, + ) + }); + } +} + impl<'a, Message, Renderer> Widget<Message, Renderer> for Tooltip<'a, Message, Renderer> where @@ -169,100 +280,32 @@ where viewport, ); - let bounds = layout.bounds(); - - if bounds.contains(cursor_position) { - let gap = f32::from(self.gap); - let style = self.style_sheet.style(); - - let defaults = renderer::Style { - text_color: style - .text_color - .unwrap_or(inherited_style.text_color), - }; - - let text_layout = Widget::<(), Renderer>::layout( - &self.tooltip, - renderer, - &layout::Limits::new(Size::ZERO, viewport.size()) - .pad(Padding::new(self.padding)), - ); - - let padding = f32::from(self.padding); - let text_bounds = text_layout.bounds(); - let x_center = bounds.x + (bounds.width - text_bounds.width) / 2.0; - let y_center = - bounds.y + (bounds.height - text_bounds.height) / 2.0; - - let mut tooltip_bounds = { - let offset = match self.position { - Position::Top => Vector::new( - x_center, - bounds.y - text_bounds.height - gap - padding, - ), - Position::Bottom => Vector::new( - x_center, - bounds.y + bounds.height + gap + padding, - ), - Position::Left => Vector::new( - bounds.x - text_bounds.width - gap - padding, - y_center, - ), - Position::Right => Vector::new( - bounds.x + bounds.width + gap + padding, - y_center, - ), - Position::FollowCursor => Vector::new( - cursor_position.x, - cursor_position.y - text_bounds.height, - ), - }; - - Rectangle { - x: offset.x - padding, - y: offset.y - padding, - width: text_bounds.width + padding * 2.0, - height: text_bounds.height + padding * 2.0, - } - }; - - if tooltip_bounds.x < viewport.x { - tooltip_bounds.x = viewport.x; - } else if viewport.x + viewport.width - < tooltip_bounds.x + tooltip_bounds.width - { - tooltip_bounds.x = - viewport.x + viewport.width - tooltip_bounds.width; - } - - if tooltip_bounds.y < viewport.y { - tooltip_bounds.y = viewport.y; - } else if viewport.y + viewport.height - < tooltip_bounds.y + tooltip_bounds.height - { - tooltip_bounds.y = - viewport.y + viewport.height - tooltip_bounds.height; - } - - renderer.with_layer(*viewport, |renderer| { - container::draw_background(renderer, &style, tooltip_bounds); + let tooltip = &self.tooltip; + draw( + renderer, + inherited_style, + layout, + cursor_position, + viewport, + self.position, + self.gap, + self.padding, + self.style_sheet.as_ref(), + |renderer, limits| { + Widget::<(), Renderer>::layout(tooltip, renderer, limits) + }, + |renderer, defaults, layout, cursor_position, viewport| { Widget::<(), Renderer>::draw( - &self.tooltip, + tooltip, renderer, - &defaults, - Layout::with_offset( - Vector::new( - tooltip_bounds.x + padding, - tooltip_bounds.y + padding, - ), - &text_layout, - ), + defaults, + layout, cursor_position, viewport, ); - }); - } + }, + ) } } @@ -273,8 +316,8 @@ where Message: 'a, { fn from( - column: Tooltip<'a, Message, Renderer>, + tooltip: Tooltip<'a, Message, Renderer>, ) -> Element<'a, Message, Renderer> { - Element::new(column) + Element::new(tooltip) } } |