use crate::{text_input::StyleSheet, Primitive, Renderer}; use iced_native::{ text_input, Background, Color, Font, HorizontalAlignment, MouseCursor, Point, Rectangle, Size, Vector, VerticalAlignment, }; use std::f32; impl text_input::Renderer for Renderer { type Style = Box; fn default_size(&self) -> u16 { // TODO: Make this configurable 20 } fn measure_value(&self, value: &str, size: u16) -> f32 { let (mut width, _) = self.text_pipeline.measure( value, f32::from(size), Font::Default, Size::INFINITY, ); let spaces_at_the_end = value.len() - value.trim_end().len(); if spaces_at_the_end > 0 { let space_width = self.text_pipeline.space_width(size as f32); width += spaces_at_the_end as f32 * space_width; } width } fn offset( &self, text_bounds: Rectangle, size: u16, value: &text_input::Value, state: &text_input::State, ) -> f32 { if state.is_focused() { let (_, offset) = measure_cursor_and_scroll_offset( self, text_bounds, value, size, state.cursor_position(value), ); offset } else { 0.0 } } fn draw( &mut self, bounds: Rectangle, text_bounds: Rectangle, cursor_position: Point, size: u16, placeholder: &str, value: &text_input::Value, state: &text_input::State, style_sheet: &Self::Style, ) -> Self::Output { let is_mouse_over = bounds.contains(cursor_position); let style = if state.is_focused() { style_sheet.focused() } else if is_mouse_over { style_sheet.hovered() } else { style_sheet.active() }; let input = Primitive::Quad { bounds, background: style.background, border_radius: style.border_radius, border_width: style.border_width, border_color: style.border_color, }; let text = value.to_string(); let text_value = Primitive::Text { content: if text.is_empty() { placeholder.to_string() } else { text.clone() }, color: if text.is_empty() { style_sheet.placeholder_color() } else { style_sheet.value_color() } .into(), font: Font::Default, bounds: Rectangle { width: f32::INFINITY, ..text_bounds }, size: f32::from(size), horizontal_alignment: HorizontalAlignment::Left, vertical_alignment: VerticalAlignment::Center, }; let (contents_primitive, offset) = if state.is_focused() { let (text_value_width, offset) = measure_cursor_and_scroll_offset( self, text_bounds, value, size, state.cursor_position(value), ); let cursor = Primitive::Quad { bounds: Rectangle { x: text_bounds.x + text_value_width, y: text_bounds.y, width: 1.0, height: text_bounds.height, }, background: Background::Color(style_sheet.value_color()), border_radius: 0, border_width: 0, border_color: Color::TRANSPARENT, }; ( Primitive::Group { primitives: vec![text_value, cursor], }, Vector::new(offset as u32, 0), ) } else { (text_value, Vector::new(0, 0)) }; let contents = Primitive::Clip { bounds: text_bounds, offset, content: Box::new(contents_primitive), }; ( Primitive::Group { primitives: vec![input, contents], }, if is_mouse_over { MouseCursor::Text } else { MouseCursor::OutOfBounds }, ) } } fn measure_cursor_and_scroll_offset( renderer: &Renderer, text_bounds: Rectangle, value: &text_input::Value, size: u16, cursor_index: usize, ) -> (f32, f32) { use iced_native::text_input::Renderer; let text_before_cursor = value.until(cursor_index).to_string(); let text_value_width = renderer.measure_value(&text_before_cursor, size); let offset = ((text_value_width + 5.0) - text_bounds.width).max(0.0); (text_value_width, offset) }