570 lines
20 KiB
Rust
570 lines
20 KiB
Rust
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#![allow(deprecated)]
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use eframe::egui;
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use egui::{Color32, ColorImage, Pos2};
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use hcie_text::TextRenderer;
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use std::fs;
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#[derive(Clone)]
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struct TextObject {
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text: String,
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font: String,
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size: f32,
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color: [u8; 4],
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pos: Pos2,
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w: u32,
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h: u32,
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}
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impl TextObject {
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fn bounds(&self) -> egui::Rect {
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egui::Rect::from_min_size(self.pos, egui::vec2(self.w as f32, self.h as f32))
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}
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fn contains(&self, point: Pos2) -> bool {
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self.bounds().contains(point)
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}
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}
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/// Strip common style suffixes to find the font family base name.
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fn extract_base_font(name: &str) -> String {
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let suffixes = [
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"-BoldItalic", "-BoldOblique", "-Bold", "-Italic", "-Oblique", "-Regular", "-Medium", "-Light",
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"-Thin", "-Black", "-SemiBold", "-ExtraBold", "-ExtraLight",
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"BoldItalic", "BoldOblique", "Bold", "Italic", "Oblique", "Regular", "Medium", "Light",
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];
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for suffix in &suffixes {
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if name.ends_with(suffix) {
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return name[..name.len() - suffix.len()].to_string();
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}
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}
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name.to_string()
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}
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/// Detect bold/italic flags from an already-resolved font name.
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fn detect_style(name: &str) -> (bool, bool) {
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let bold = name.contains("Bold");
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let italic = name.contains("Italic") || name.contains("Oblique");
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(bold, italic)
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}
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struct DraftState {
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text: String,
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font: String, // resolved full font name (e.g. "DejaVuSans-Bold")
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base_font: String, // family name (e.g. "DejaVuSans")
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size: f32,
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color: [u8; 4],
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bold: bool,
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italic: bool,
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}
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impl DraftState {
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fn from_object(obj: &TextObject) -> Self {
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let (bold, italic) = detect_style(&obj.font);
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Self {
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text: obj.text.clone(),
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font: obj.font.clone(),
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base_font: extract_base_font(&obj.font),
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size: obj.size,
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color: obj.color,
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bold,
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italic,
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}
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}
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fn resolve_font(&mut self, renderer: &TextRenderer) {
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let candidates = match (self.bold, self.italic) {
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(true, true) => vec![
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format!("{}-BoldItalic", self.base_font),
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format!("{}BoldItalic", self.base_font),
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format!("{}-BoldOblique", self.base_font),
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format!("{}BoldOblique", self.base_font),
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],
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(true, false) => vec![
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format!("{}-Bold", self.base_font),
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format!("{}Bold", self.base_font),
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],
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(false, true) => vec![
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format!("{}-Italic", self.base_font),
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format!("{}Italic", self.base_font),
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format!("{}-Oblique", self.base_font),
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format!("{}Oblique", self.base_font),
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],
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(false, false) => vec![self.base_font.clone()],
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};
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for c in &candidates {
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if renderer.has_font(c) {
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self.font = c.clone();
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return;
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}
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}
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if let Some(first) = candidates.first() {
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self.font = first.clone();
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}
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}
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fn set_base_font(&mut self, base: &str, renderer: &TextRenderer) {
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self.base_font = base.to_string();
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self.bold = false;
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self.italic = false;
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self.resolve_font(renderer);
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}
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}
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fn scan_font_dir(renderer: &mut TextRenderer, dir: &std::path::Path) {
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if let Ok(entries) = fs::read_dir(dir) {
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for entry in entries.flatten() {
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let path = entry.path();
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if path.is_dir() {
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scan_font_dir(renderer, &path);
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continue;
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}
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let ext = path.extension().and_then(|e| e.to_str()).unwrap_or("");
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if ext != "ttf" && ext != "otf" {
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continue;
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}
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if let Some(name) = path.file_stem().and_then(|n| n.to_str()) {
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if let Ok(data) = fs::read(&path) {
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let _ = renderer.load_font(name, &data);
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}
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}
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}
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}
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}
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fn load_all_fonts(renderer: &mut TextRenderer) {
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let font_dirs = [
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"/usr/share/fonts/truetype/dejavu",
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"/usr/share/fonts/truetype/liberation",
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];
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for dir in &font_dirs {
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scan_font_dir(renderer, std::path::Path::new(dir));
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}
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let fallbacks = [
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"/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf",
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"/usr/share/fonts/truetype/liberation/LiberationSans-Regular.ttf",
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];
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for path in &fallbacks {
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if let Ok(data) = fs::read(path) {
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let stem = std::path::Path::new(path)
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.file_stem()
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.and_then(|s| s.to_str())
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.unwrap_or("fallback");
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if !renderer.has_font(stem) {
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let _ = renderer.load_font(stem, &data);
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}
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}
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}
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}
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struct App {
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renderer: TextRenderer,
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draft: DraftState,
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objects: Vec<TextObject>,
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selected_index: Option<usize>,
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canvas_pixels: Vec<u8>,
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texture: Option<egui::TextureHandle>,
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canvas_size: [u32; 2],
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font_loaded: bool,
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dirty: bool,
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anti_alias: bool,
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}
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impl App {
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fn new(_cc: &eframe::CreationContext<'_>) -> Self {
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let mut renderer = TextRenderer::new();
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load_all_fonts(&mut renderer);
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let font_loaded = !renderer.get_fonts().is_empty();
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let first_font = renderer.get_fonts().first().cloned().unwrap_or_default();
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let base = extract_base_font(&first_font);
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Self {
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renderer,
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draft: DraftState {
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text: "Hello!".to_string(),
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font: first_font.clone(),
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base_font: base,
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size: 64.0,
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color: [0, 0, 0, 255],
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bold: false,
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italic: false,
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},
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objects: Vec::new(),
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selected_index: None,
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canvas_pixels: vec![255; 1024 * 1024 * 4],
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texture: None,
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canvas_size: [1024, 1024],
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font_loaded,
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dirty: true,
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anti_alias: true,
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}
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}
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fn redraw(&mut self) {
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if !self.font_loaded {
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return;
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}
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let w = self.canvas_size[0] as usize;
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let h = self.canvas_size[1] as usize;
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self.canvas_pixels.fill(255);
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for (_i, obj) in self.objects.iter().enumerate() {
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if let Ok((pixels, tw, th, _, _, _, _)) =
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self.renderer
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.rasterize_text(&obj.text, &obj.font, obj.size, obj.color, 0.0, 0.0, 0.0, hcie_protocol::tools::TextAlignment::Left, hcie_protocol::tools::TextOrientation::Horizontal, &[], self.anti_alias)
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{
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let tx = obj.pos.x as i32;
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let ty = obj.pos.y as i32;
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for py in 0..th as i32 {
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for px in 0..tw as i32 {
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let cx = tx + px;
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let cy = ty + py;
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if cx >= 0 && cx < w as i32 && cy >= 0 && cy < h as i32 {
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let si = ((py as u32 * tw + px as u32) * 4) as usize;
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let di = (cy as usize * w + cx as usize) * 4;
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let a = pixels[si + 3] as f32 / 255.0;
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if a <= 0.0 {
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continue;
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}
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for i in 0..4 {
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let s = pixels[si + i] as f32;
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let d = self.canvas_pixels[di + i] as f32;
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self.canvas_pixels[di + i] = (s * a + d * (1.0 - a)) as u8;
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}
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}
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}
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}
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}
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}
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self.dirty = true;
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}
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fn apply_draft(&mut self) {
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let Some(idx) = self.selected_index else { return };
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if idx >= self.objects.len() {
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return;
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}
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if let Ok((_pixels, tw, th, _, _, _, _)) = self.renderer.rasterize_text(
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&self.draft.text,
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&self.draft.font,
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self.draft.size,
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self.draft.color,
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0.0,
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0.0,
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0.0,
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hcie_protocol::tools::TextAlignment::Left,
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hcie_protocol::tools::TextOrientation::Horizontal,
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&[],
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self.anti_alias,
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) {
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self.objects[idx] = TextObject {
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text: self.draft.text.clone(),
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font: self.draft.font.clone(),
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size: self.draft.size,
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color: self.draft.color,
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pos: self.objects[idx].pos,
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w: tw,
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h: th,
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};
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self.redraw();
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}
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}
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fn select_object(&mut self, idx: usize) {
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// Auto-apply previous selection before switching
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if let Some(prev) = self.selected_index {
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if prev != idx {
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self.apply_draft();
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}
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}
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let obj = &self.objects[idx];
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self.draft = DraftState::from_object(obj);
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self.selected_index = Some(idx);
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self.redraw(); // removes the old rasterized version
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}
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fn deselect(&mut self) {
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self.apply_draft();
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self.selected_index = None;
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self.redraw();
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}
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fn canvas_point(&self, screen: Pos2, rect: egui::Rect, scale: f32) -> Pos2 {
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Pos2::new(
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(screen.x - rect.min.x) / scale,
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(screen.y - rect.min.y) / scale,
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)
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}
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}
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impl eframe::App for App {
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fn ui(&mut self, ui: &mut egui::Ui, _frame: &mut eframe::Frame) {
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let ctx = ui.ctx().clone();
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let mut draft_changed = false;
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if self.dirty {
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let image = ColorImage::from_rgba_unmultiplied(
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[self.canvas_size[0] as usize, self.canvas_size[1] as usize],
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&self.canvas_pixels,
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);
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if let Some(tex) = &mut self.texture {
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tex.set(image, egui::TextureOptions::NEAREST);
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} else {
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self.texture =
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Some(ctx.load_texture("canvas", image, egui::TextureOptions::NEAREST));
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}
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self.dirty = false;
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}
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let mut fonts = self.renderer.get_fonts();
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fonts.sort();
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// ── Left panel ──────────────────────────────────────────────
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egui::Panel::left("panel").show(&ctx, |ui| {
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ui.heading("Text Editor");
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if !self.font_loaded {
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ui.colored_label(Color32::RED, "No fonts found.");
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}
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ui.separator();
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if let Some(idx) = self.selected_index {
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ui.strong(format!("Editing object #{} — click Done when finished", idx));
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} else {
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ui.label("Click canvas to add text.");
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}
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ui.separator();
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ui.label("Text");
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if ui.text_edit_singleline(&mut self.draft.text).changed() {
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draft_changed = true;
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}
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ui.label("Font family");
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egui::ComboBox::from_id_source("font_select")
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.selected_text(&self.draft.base_font)
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.show_ui(ui, |ui| {
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let mut seen = std::collections::HashSet::new();
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for f in &fonts {
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let base = extract_base_font(f);
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if seen.insert(base.clone()) {
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if ui.selectable_value(
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&mut self.draft.base_font,
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base.clone(),
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&base,
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).changed() {
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let b = self.draft.base_font.clone();
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self.draft.set_base_font(&b, &self.renderer);
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draft_changed = true;
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}
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}
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}
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});
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// Bold / Italic toggles
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ui.horizontal(|ui| {
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let bold_btn = ui.add(egui::Button::new("B").selected(self.draft.bold));
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if bold_btn.clicked() {
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self.draft.bold = !self.draft.bold;
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self.draft.resolve_font(&self.renderer);
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draft_changed = true;
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}
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let italic_btn = ui.add(egui::Button::new("I").selected(self.draft.italic));
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|
if italic_btn.clicked() {
|
||
|
|
self.draft.italic = !self.draft.italic;
|
||
|
|
self.draft.resolve_font(&self.renderer);
|
||
|
|
draft_changed = true;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
ui.label("Size");
|
||
|
|
if ui.add(egui::Slider::new(&mut self.draft.size, 8.0..=300.0)).changed() {
|
||
|
|
draft_changed = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
let mut rgba = [
|
||
|
|
self.draft.color[0] as f32 / 255.,
|
||
|
|
self.draft.color[1] as f32 / 255.,
|
||
|
|
self.draft.color[2] as f32 / 255.,
|
||
|
|
self.draft.color[3] as f32 / 255.,
|
||
|
|
];
|
||
|
|
if ui.color_edit_button_rgba_unmultiplied(&mut rgba).changed() {
|
||
|
|
self.draft.color = [
|
||
|
|
(rgba[0] * 255.) as u8,
|
||
|
|
(rgba[1] * 255.) as u8,
|
||
|
|
(rgba[2] * 255.) as u8,
|
||
|
|
(rgba[3] * 255.) as u8,
|
||
|
|
];
|
||
|
|
draft_changed = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ui.checkbox(&mut self.anti_alias, "Anti-aliasing").changed() {
|
||
|
|
draft_changed = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
if self.selected_index.is_some() {
|
||
|
|
ui.separator();
|
||
|
|
let done = ui.add_sized(
|
||
|
|
egui::vec2(ui.available_width(), 32.0),
|
||
|
|
egui::Button::new(
|
||
|
|
egui::RichText::new("Done").color(Color32::WHITE),
|
||
|
|
)
|
||
|
|
.fill(Color32::from_rgb(34, 139, 34))
|
||
|
|
.rounding(4.0),
|
||
|
|
);
|
||
|
|
if done.clicked() {
|
||
|
|
self.deselect();
|
||
|
|
}
|
||
|
|
|
||
|
|
ui.horizontal(|ui| {
|
||
|
|
if ui.button("Delete").clicked() {
|
||
|
|
if let Some(idx) = self.selected_index {
|
||
|
|
self.objects.remove(idx);
|
||
|
|
self.selected_index = None;
|
||
|
|
self.redraw();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
ui.separator();
|
||
|
|
if ui.button("Clear All").clicked() {
|
||
|
|
self.objects.clear();
|
||
|
|
self.selected_index = None;
|
||
|
|
self.redraw();
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
// ── Central canvas ──────────────────────────────────────────
|
||
|
|
egui::CentralPanel::default().show(&ctx, |ui| {
|
||
|
|
let available = ui.available_size_before_wrap();
|
||
|
|
let scale = (available.x / self.canvas_size[0] as f32)
|
||
|
|
.min(available.y / self.canvas_size[1] as f32);
|
||
|
|
let disp_w = self.canvas_size[0] as f32 * scale;
|
||
|
|
let disp_h = self.canvas_size[1] as f32 * scale;
|
||
|
|
|
||
|
|
let sense = egui::Sense::click_and_drag();
|
||
|
|
let (rect, resp) = ui.allocate_exact_size(egui::vec2(disp_w, disp_h), sense);
|
||
|
|
|
||
|
|
// Click → select existing or create new
|
||
|
|
if resp.clicked() {
|
||
|
|
if let Some(pos) = resp.interact_pointer_pos() {
|
||
|
|
let cp = self.canvas_point(pos, rect, scale);
|
||
|
|
let hit = self.objects.iter().rposition(|o| o.contains(cp));
|
||
|
|
if let Some(hit_idx) = hit {
|
||
|
|
self.select_object(hit_idx);
|
||
|
|
} else {
|
||
|
|
// Create new object with current draft settings
|
||
|
|
if let Ok((_pixels, tw, th, _, _, _, _)) = self.renderer.rasterize_text(
|
||
|
|
&self.draft.text,
|
||
|
|
&self.draft.font,
|
||
|
|
self.draft.size,
|
||
|
|
self.draft.color,
|
||
|
|
0.0,
|
||
|
|
0.0,
|
||
|
|
0.0,
|
||
|
|
hcie_protocol::tools::TextAlignment::Left,
|
||
|
|
hcie_protocol::tools::TextOrientation::Horizontal,
|
||
|
|
&[],
|
||
|
|
self.anti_alias,
|
||
|
|
) {
|
||
|
|
// If something was already selected, apply it first
|
||
|
|
if self.selected_index.is_some() {
|
||
|
|
self.deselect();
|
||
|
|
}
|
||
|
|
let idx = self.objects.len();
|
||
|
|
self.objects.push(TextObject {
|
||
|
|
text: self.draft.text.clone(),
|
||
|
|
font: self.draft.font.clone(),
|
||
|
|
size: self.draft.size,
|
||
|
|
color: self.draft.color,
|
||
|
|
pos: cp,
|
||
|
|
w: tw,
|
||
|
|
h: th,
|
||
|
|
});
|
||
|
|
self.draft = DraftState::from_object(&self.objects[idx]);
|
||
|
|
self.selected_index = Some(idx);
|
||
|
|
self.redraw();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Drag → move selected object
|
||
|
|
if resp.dragged_by(egui::PointerButton::Primary) {
|
||
|
|
if let Some(idx) = self.selected_index {
|
||
|
|
if let Some(pos) = resp.interact_pointer_pos() {
|
||
|
|
let cp = self.canvas_point(pos, rect, scale);
|
||
|
|
self.objects[idx].pos = cp;
|
||
|
|
self.redraw();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Paint canvas texture (committed objects only)
|
||
|
|
if let Some(tex) = &self.texture {
|
||
|
|
ui.painter().image(
|
||
|
|
tex.id(),
|
||
|
|
rect,
|
||
|
|
egui::Rect::from_min_max(egui::pos2(0., 0.), egui::pos2(1., 1.)),
|
||
|
|
Color32::WHITE,
|
||
|
|
);
|
||
|
|
} else {
|
||
|
|
ui.painter().rect_filled(rect, 0.0, Color32::GRAY);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Selection rectangle + inline text edit on canvas
|
||
|
|
if let Some(idx) = self.selected_index {
|
||
|
|
if idx < self.objects.len() {
|
||
|
|
let obj = &self.objects[idx];
|
||
|
|
let b = obj.bounds();
|
||
|
|
let screen_rect = egui::Rect::from_min_size(
|
||
|
|
rect.min + egui::vec2(b.min.x * scale, b.min.y * scale),
|
||
|
|
egui::vec2(b.width() * scale, b.height() * scale),
|
||
|
|
);
|
||
|
|
|
||
|
|
// Selection border
|
||
|
|
ui.painter()
|
||
|
|
.rect_stroke(screen_rect, 0.0, egui::Stroke::new(2.0, Color32::BLUE), egui::StrokeKind::Inside);
|
||
|
|
|
||
|
|
// Inline text edit directly on canvas (transparent — rasterized text shows through)
|
||
|
|
let edit_width = (rect.max.x - screen_rect.min.x - 10.0).max(400.0);
|
||
|
|
let edit_rect = egui::Rect::from_min_size(
|
||
|
|
screen_rect.min,
|
||
|
|
egui::vec2(edit_width, screen_rect.height().max(self.draft.size * scale * 1.2)),
|
||
|
|
);
|
||
|
|
|
||
|
|
ui.allocate_ui_at_rect(edit_rect, |ui| {
|
||
|
|
ui.visuals_mut().extreme_bg_color = Color32::TRANSPARENT;
|
||
|
|
let text_resp = ui.add(
|
||
|
|
egui::TextEdit::singleline(&mut self.draft.text)
|
||
|
|
.font(egui::FontId::monospace(self.draft.size * scale))
|
||
|
|
.text_color(Color32::TRANSPARENT)
|
||
|
|
.frame(egui::Frame::NONE),
|
||
|
|
);
|
||
|
|
if text_resp.changed() {
|
||
|
|
draft_changed = true;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
if draft_changed {
|
||
|
|
self.apply_draft();
|
||
|
|
}
|
||
|
|
|
||
|
|
ctx.request_repaint();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() -> eframe::Result<()> {
|
||
|
|
eframe::run_native(
|
||
|
|
"HCIE Text Engine — Live Editor",
|
||
|
|
eframe::NativeOptions {
|
||
|
|
viewport: egui::ViewportBuilder::default().with_inner_size([1200., 800.]),
|
||
|
|
..Default::default()
|
||
|
|
},
|
||
|
|
Box::new(|cc| Ok(Box::new(App::new(cc)))),
|
||
|
|
)
|
||
|
|
}
|