visual testing

This commit is contained in:
2026-04-06 03:17:30 +03:00
parent 889b66978a
commit f1357b6dbe
31 changed files with 2575 additions and 76 deletions

View File

@@ -442,12 +442,12 @@ fn render_pie(
let cx = px + pw / 2.0;
let cy = py + ph / 2.0;
let radius = pw.min(ph) / 2.0 * 0.9;
let radius = pw.min(ph) / 2.0 * 0.65;
let inner_frac = data.style.inner_radius.unwrap_or(0.0).clamp(0.0, 0.9);
let inner_r = radius * inner_frac;
let show_labels = data.labels.as_ref().is_some_and(|l| l.show);
let label_font = data.labels.as_ref().and_then(|l| l.font_size).unwrap_or(2.5);
let label_font = data.labels.as_ref().and_then(|l| l.font_size).unwrap_or(3.0);
let label_color = data
.labels
.as_ref()
@@ -499,7 +499,7 @@ fn render_pie(
.unwrap();
}
// Label
// Percentage label inside slice
if show_labels {
let mid_angle = start_angle + sweep / 2.0;
let label_r = if inner_r > 0.0 {
@@ -518,6 +518,37 @@ fn render_pie(
.unwrap();
}
// Category name label outside slice with leader line
if i < data.categories.len() {
let mid_angle = start_angle + sweep / 2.0;
let line_start_r = radius; // starts at pie edge
let line_end_r = radius + 3.0;
let text_r = radius + 4.0;
// Leader line from pie edge to label
let lx1 = cx + line_start_r * mid_angle.cos();
let ly1 = cy + line_start_r * mid_angle.sin();
let lx2 = cx + line_end_r * mid_angle.cos();
let ly2 = cy + line_end_r * mid_angle.sin();
write!(
svg,
r##"<line x1="{:.2}" y1="{:.2}" x2="{:.2}" y2="{:.2}" stroke="#999" stroke-width="0.2"/>"##,
lx1, ly1, lx2, ly2
)
.unwrap();
// Category text
let tx = cx + text_r * mid_angle.cos();
let ty = cy + text_r * mid_angle.sin();
let anchor = if mid_angle.cos() >= 0.0 { "start" } else { "end" };
write!(
svg,
r##"<text x="{:.2}" y="{:.2}" font-size="2.5" fill="#555" text-anchor="{}" dominant-baseline="central">{}</text>"##,
tx, ty, anchor, escape_xml(&data.categories[i])
)
.unwrap();
}
start_angle = end_angle;
}
}

View File

@@ -118,6 +118,24 @@ pub struct ChartRenderData {
pub line_width: Option<f64>,
#[serde(default)]
pub background_color: Option<String>,
// Label color
#[serde(default)]
pub label_color: Option<String>,
// Legend
#[serde(default)]
pub legend_show: bool,
#[serde(default)]
pub legend_position: Option<String>,
#[serde(default)]
pub legend_font_size: Option<f64>,
// Axis labels
#[serde(default)]
pub x_label: Option<String>,
#[serde(default)]
pub y_label: Option<String>,
// Title align
#[serde(default)]
pub title_align: Option<String>,
}
#[derive(Debug, Clone, Serialize, Deserialize)]

View File

@@ -759,7 +759,6 @@ fn render_chart(
measurer: &mut TextMeasurer,
) {
// Tum hesaplar mm cinsinden yapilir, cizim pt'ye cevrilir
// base_x_mm, base_y_mm: element'in sayfa uzerindeki mm pozisyonu
let base_x_mm: f64 = (x / MM_TO_PT) as f64;
let base_y_mm: f64 = (y / MM_TO_PT) as f64;
let w_mm: f64 = (w / MM_TO_PT) as f64;
@@ -769,26 +768,31 @@ fn render_chart(
chart_rect(surface, base_x_mm, base_y_mm, w_mm, h_mm,
parse_color(data.background_color.as_deref().unwrap_or("#FFFFFF")));
// Margin'ler (SVG renderer ile ayni mantik)
let mut mt = 2.0_f64;
let mut mb = 4.0_f64;
let ml = 14.0_f64;
let mr = 4.0_f64;
// Margin hesaplari — SVG renderer ile AYNI mantik
let mut margin_top = 2.0_f64;
let mut margin_bottom = 4.0_f64;
let mut margin_left = 8.0_f64;
let margin_right = 4.0_f64;
// Title
if let Some(ref title) = data.title_text {
if !title.is_empty() {
let fs = data.title_font_size.unwrap_or(4.0);
mt += fs * 0.4 + 2.0;
margin_top += fs * 0.4 + 2.0;
let color = parse_color(data.title_color.as_deref().unwrap_or("#333333"));
let font = fonts.get(None, Some("bold"));
if let Some(f) = font {
surface.set_fill(Some(fill_from_color(color)));
surface.set_stroke(None);
let fs_pt = fs as f32;
let fs_pt = pt(fs);
let (tw, _) = measurer.measure(title, None, fs_pt, Some("bold"), None);
let tx = pt(base_x_mm + w_mm / 2.0) - tw / 2.0;
let ty = pt(base_y_mm + mt - 1.0);
let align = data.title_align.as_deref().unwrap_or("center");
let tx = match align {
"left" => pt(base_x_mm + margin_left),
"right" => pt(base_x_mm + w_mm - margin_right) - tw,
_ => pt(base_x_mm + w_mm / 2.0) - tw / 2.0,
};
let ty = pt(base_y_mm + margin_top - 1.0);
surface.draw_text(
Point::from_xy(tx, ty),
f.clone(), fs_pt, title, false, TextDirection::Auto,
@@ -797,24 +801,85 @@ fn render_chart(
}
}
let is_pie = matches!(data.chart_type, dreport_core::models::ChartType::Pie);
// Legend space
let legend_show = data.legend_show;
let legend_pos = data.legend_position.as_deref().unwrap_or("bottom");
let legend_font = data.legend_font_size.unwrap_or(2.8);
if !is_pie {
let max_label_len = data.categories.iter().map(|c| c.len()).max().unwrap_or(0);
if max_label_len > 6 { mb += 10.0; } else { mb += 4.0; }
mb += 4.0;
if legend_show && data.series.len() > 1 {
match legend_pos {
"top" => margin_top += legend_font + 3.0,
"bottom" => margin_bottom += legend_font + 3.0,
_ => {} // right — icerde handle edilecek
}
}
let plot_x = base_x_mm + ml;
let plot_y = base_y_mm + mt;
let plot_w = (w_mm - ml - mr).max(1.0);
let plot_h = (h_mm - mt - mb).max(1.0);
let is_pie = matches!(data.chart_type, dreport_core::models::ChartType::Pie);
// Axis labels icin yer ac (bar ve line) — SVG ile ayni
if !is_pie {
if data.x_label.is_some() {
margin_bottom += 4.0;
}
if data.y_label.is_some() {
margin_left += 4.0;
}
// Category labels icin alt bosluk
let max_label_len = data.categories.iter().map(|c| c.len()).max().unwrap_or(0);
let n_cats = data.categories.len();
let available_w = w_mm - margin_left - margin_right;
let cat_width = if n_cats > 0 { available_w / n_cats as f64 } else { available_w };
let max_chars_fit = (cat_width / 1.25).max(1.0) as usize;
let will_rotate = max_label_len > max_chars_fit;
if will_rotate {
let char_w_mm = 1.1;
let max_text_w = max_label_len as f64 * char_w_mm;
let label_v = max_text_w * 0.707;
margin_bottom += label_v.min(25.0).max(6.0);
let label_h = max_text_w * 0.707;
let extra_left = (label_h - cat_width / 2.0).max(0.0);
margin_left += extra_left.min(10.0);
} else {
margin_bottom += 4.0;
}
// Y-axis value labels icin sol bosluk
margin_left += 6.0;
}
let plot_x = base_x_mm + margin_left;
let plot_y = base_y_mm + margin_top;
let plot_w = (w_mm - margin_left - margin_right).max(1.0);
let plot_h = (h_mm - margin_top - margin_bottom).max(1.0);
use dreport_core::models::ChartType;
match data.chart_type {
ChartType::Bar => render_chart_bar(surface, data, plot_x, plot_y, plot_w, plot_h),
ChartType::Line => render_chart_line(surface, data, plot_x, plot_y, plot_w, plot_h),
ChartType::Pie => render_chart_pie(surface, data, plot_x, plot_y, plot_w, plot_h),
ChartType::Bar => render_chart_bar(surface, data, plot_x, plot_y, plot_w, plot_h, fonts, measurer),
ChartType::Line => render_chart_line(surface, data, plot_x, plot_y, plot_w, plot_h, fonts, measurer),
ChartType::Pie => render_chart_pie(surface, data, plot_x, plot_y, plot_w, plot_h, fonts, measurer),
}
// Legend render
if legend_show && data.series.len() > 1 {
render_chart_legend(surface, data, legend_pos, legend_font, base_x_mm, base_y_mm, w_mm, h_mm, margin_left, margin_top, plot_w, plot_h, fonts, measurer);
}
// Axis labels
if !is_pie {
if let Some(ref x_label) = data.x_label {
let lx = plot_x + plot_w / 2.0;
let ly = base_y_mm + h_mm - 2.0;
chart_text_centered(surface, lx, ly, x_label, 2.8, "#666666", fonts, measurer);
}
if let Some(ref y_label) = data.y_label {
let lx = base_x_mm + 3.0;
let ly = plot_y + plot_h / 2.0;
// Rotated text — krilla'da transform ile
surface.push_transform(&Transform::from_translate(pt(lx), pt(ly)));
surface.push_transform(&Transform::from_row(0.0, -1.0, 1.0, 0.0, 0.0, 0.0));
chart_text_centered(surface, 0.0, 0.0, y_label, 2.8, "#666666", fonts, measurer);
surface.pop();
surface.pop();
}
}
}
@@ -855,37 +920,258 @@ fn chart_line_seg(surface: &mut krilla::surface::Surface<'_>, x1: f64, y1: f64,
}
}
/// Chart icin metin ciz — tek satirlik, centered
/// font_size_mm: SVG viewBox'taki mm cinsinden boyut, pt'ye cevrilir
fn chart_text_centered(
surface: &mut krilla::surface::Surface<'_>,
cx_mm: f64, cy_mm: f64,
text: &str, font_size_mm: f64, color_hex: &str,
fonts: &FontCollection, measurer: &mut TextMeasurer,
) {
let font = fonts.get(None, None);
let Some(f) = font else { return; };
let color = parse_color(color_hex);
let fs_pt = pt(font_size_mm);
let (tw, _) = measurer.measure(text, None, fs_pt, None, None);
surface.set_fill(Some(fill_from_color(color)));
surface.set_stroke(None);
surface.draw_text(
Point::from_xy(pt(cx_mm) - tw / 2.0, pt(cy_mm)),
f.clone(), fs_pt, text, false, TextDirection::Auto,
);
}
/// Chart icin metin ciz — end-aligned (sag hizali)
fn chart_text_end(
surface: &mut krilla::surface::Surface<'_>,
right_x_mm: f64, cy_mm: f64,
text: &str, font_size_mm: f64, color_hex: &str,
fonts: &FontCollection, measurer: &mut TextMeasurer,
) {
let font = fonts.get(None, None);
let Some(f) = font else { return; };
let color = parse_color(color_hex);
let fs_pt = pt(font_size_mm);
let (tw, _) = measurer.measure(text, None, fs_pt, None, None);
surface.set_fill(Some(fill_from_color(color)));
surface.set_stroke(None);
surface.draw_text(
Point::from_xy(pt(right_x_mm) - tw, pt(cy_mm)),
f.clone(), fs_pt, text, false, TextDirection::Auto,
);
}
/// Chart icin metin ciz — start-aligned (sol hizali)
fn chart_text_start(
surface: &mut krilla::surface::Surface<'_>,
x_mm: f64, cy_mm: f64,
text: &str, font_size_mm: f64, color_hex: &str,
fonts: &FontCollection, _measurer: &mut TextMeasurer,
) {
let font = fonts.get(None, None);
let Some(f) = font else { return; };
let color = parse_color(color_hex);
let fs_pt = pt(font_size_mm);
surface.set_fill(Some(fill_from_color(color)));
surface.set_stroke(None);
surface.draw_text(
Point::from_xy(pt(x_mm), pt(cy_mm)),
f.clone(), fs_pt, text, false, TextDirection::Auto,
);
}
fn chart_format_value(v: f64) -> String {
if v.abs() >= 1_000_000.0 {
format!("{:.1}M", v / 1_000_000.0)
} else if v.abs() >= 1_000.0 {
format!("{:.1}K", v / 1_000.0)
} else if v.fract().abs() < 1e-10 {
format!("{}", v as i64)
} else {
format!("{:.1}", v)
}
}
/// Y-axis grid + value labels (SVG render_y_axis ile ayni)
fn render_chart_y_axis(
surface: &mut krilla::surface::Surface<'_>,
min_val: f64, max_val: f64,
px: f64, py: f64, pw: f64, ph: f64,
show_grid: bool, grid_color: &str,
fonts: &FontCollection, measurer: &mut TextMeasurer,
) {
let range = if (max_val - min_val).abs() < 1e-10 { 1.0 } else { max_val - min_val };
let tick_count = 5;
for i in 0..=tick_count {
let frac = i as f64 / tick_count as f64;
let val = min_val + frac * range;
let y = py + ph - frac * ph;
// Value label
let label = chart_format_value(val);
chart_text_end(surface, px - 1.5, y + 0.8, &label, 2.3, "#666666", fonts, measurer);
// Grid line
if show_grid {
let gc = parse_color(grid_color);
chart_line_seg(surface, px, y, px + pw, y, gc, 0.4);
}
}
// Y axis line
let ac = parse_color("#9CA3AF");
chart_line_seg(surface, px, py, px, py + ph, ac, 0.8);
}
/// X-axis category labels — bar chart (slot-based spacing)
fn render_chart_x_labels(
surface: &mut krilla::surface::Surface<'_>,
categories: &[String],
px: f64, baseline_y: f64, pw: f64,
fonts: &FontCollection, measurer: &mut TextMeasurer,
) {
let n_cats = categories.len();
if n_cats == 0 { return; }
let cat_width = pw / n_cats as f64;
let max_chars = (cat_width / 1.25).max(1.0) as usize;
let needs_rotate = categories.iter().any(|c| c.len() > max_chars);
for (ci, cat) in categories.iter().enumerate() {
let x = px + ci as f64 * cat_width + cat_width / 2.0;
let y = baseline_y + 2.5;
render_chart_single_x_label(surface, cat, x, y, needs_rotate, fonts, measurer);
}
}
/// X-axis category labels — line chart (point-based spacing)
fn render_chart_x_labels_line(
surface: &mut krilla::surface::Surface<'_>,
categories: &[String],
px: f64, baseline_y: f64, pw: f64,
fonts: &FontCollection, measurer: &mut TextMeasurer,
) {
let n_cats = categories.len();
if n_cats == 0 { return; }
let spacing = if n_cats == 1 { pw } else { pw / (n_cats - 1) as f64 };
let max_chars = (spacing / 1.25).max(1.0) as usize;
let needs_rotate = categories.iter().any(|c| c.len() > max_chars);
for (ci, cat) in categories.iter().enumerate() {
let x = if n_cats == 1 { px + pw / 2.0 } else { px + ci as f64 * pw / (n_cats - 1) as f64 };
let y = baseline_y + 2.5;
render_chart_single_x_label(surface, cat, x, y, needs_rotate, fonts, measurer);
}
}
/// Tek bir X-axis label — rotate gerekiyorsa -45° ile
fn render_chart_single_x_label(
surface: &mut krilla::surface::Surface<'_>,
text: &str, x_mm: f64, y_mm: f64, rotate: bool,
fonts: &FontCollection, measurer: &mut TextMeasurer,
) {
if rotate {
// -45° rotate, text-anchor="end"
surface.push_transform(&Transform::from_translate(pt(x_mm), pt(y_mm)));
// rotate(-45°) = cos(-45), sin(-45), -sin(-45), cos(-45)
let c = std::f32::consts::FRAC_PI_4.cos();
let s = std::f32::consts::FRAC_PI_4.sin();
surface.push_transform(&Transform::from_row(c, -s, s, c, 0.0, 0.0));
// end-aligned: text saga hizali (negatif x'e dogru)
chart_text_end(surface, 0.0, 0.0, text, 2.2, "#666666", fonts, measurer);
surface.pop();
surface.pop();
} else {
chart_text_centered(surface, x_mm, y_mm, text, 2.5, "#666666", fonts, measurer);
}
}
/// Legend render
fn render_chart_legend(
surface: &mut krilla::surface::Surface<'_>,
data: &crate::ChartRenderData,
position: &str, font_size: f64,
base_x: f64, base_y: f64,
total_w: f64, total_h: f64,
margin_left: f64, margin_top: f64,
plot_w: f64, _plot_h: f64,
fonts: &FontCollection, measurer: &mut TextMeasurer,
) {
use dreport_core::models::ChartType;
let names: Vec<&str> = if matches!(data.chart_type, ChartType::Pie) {
data.categories.iter().map(|s| s.as_str()).collect()
} else {
data.series.iter().map(|s| s.name.as_str()).collect()
};
let swatch_size = 2.5;
let item_gap = 3.0 + font_size * 0.4;
let spacing = 4.0;
match position {
"top" => {
let y = base_y + margin_top - font_size - 1.5;
let mut x = base_x + margin_left;
for (i, name) in names.iter().enumerate() {
let color = parse_color(data.colors.get(i).map(|s| s.as_str()).unwrap_or("#4F46E5"));
chart_rect(surface, x, y - font_size * 0.3, swatch_size, swatch_size, color);
chart_text_start(surface, x + item_gap, y + font_size * 0.3, name, font_size, "#666666", fonts, measurer);
x += item_gap + name.len() as f64 * font_size * 0.5 + spacing;
}
}
"right" => {
let x = base_x + margin_left + plot_w + 4.0;
let mut y = base_y + margin_top + 2.0;
for (i, name) in names.iter().enumerate() {
let color = parse_color(data.colors.get(i).map(|s| s.as_str()).unwrap_or("#4F46E5"));
chart_rect(surface, x, y, swatch_size, swatch_size, color);
chart_text_start(surface, x + item_gap, y + font_size * 0.7, name, font_size, "#666666", fonts, measurer);
y += font_size + 2.0;
}
}
_ => {
// bottom (default)
let y = base_y + total_h - 3.0;
let total_legend_w: f64 = names.iter()
.map(|n| item_gap + n.len() as f64 * font_size * 0.5 + spacing)
.sum::<f64>() - spacing;
let mut x = base_x + (total_w - total_legend_w) / 2.0;
for (i, name) in names.iter().enumerate() {
let color = parse_color(data.colors.get(i).map(|s| s.as_str()).unwrap_or("#4F46E5"));
chart_rect(surface, x, y - font_size * 0.3, swatch_size, swatch_size, color);
chart_text_start(surface, x + item_gap, y + font_size * 0.3, name, font_size, "#666666", fonts, measurer);
x += item_gap + name.len() as f64 * font_size * 0.5 + spacing;
}
}
}
}
/// Bar chart — tum koordinatlar mm cinsinden (mutlak sayfa pozisyonu)
fn render_chart_bar(
surface: &mut krilla::surface::Surface<'_>,
data: &crate::ChartRenderData,
px: f64, py: f64, pw: f64, ph: f64,
fonts: &FontCollection, measurer: &mut TextMeasurer,
) {
if data.categories.is_empty() || data.series.is_empty() { return; }
let (min_val, max_val) = chart_value_range(data);
let range = if (max_val - min_val).abs() < 1e-10 { 1.0 } else { max_val - min_val };
let show_grid = data.show_grid;
let grid_color = data.grid_color.as_deref().unwrap_or("#E5E7EB");
// Grid + Y axis labels
render_chart_y_axis(surface, min_val, max_val, px, py, pw, ph, show_grid, grid_color, fonts, measurer);
let n_cats = data.categories.len();
let n_series = data.series.len();
let cat_width = pw / n_cats as f64;
let bar_gap = data.bar_gap.unwrap_or(0.2).clamp(0.0, 0.8);
let group_width = cat_width * (1.0 - bar_gap);
// Grid
if data.show_grid {
let gc = parse_color(data.grid_color.as_deref().unwrap_or("#E5E7EB"));
for i in 0..=5 {
let frac = i as f64 / 5.0;
let gy = py + ph - frac * ph;
chart_line_seg(surface, px, gy, px + pw, gy, gc, 0.4);
}
}
// Axis lines
let ac = parse_color("#9CA3AF");
chart_line_seg(surface, px, py + ph, px + pw, py + ph, ac, 0.8);
chart_line_seg(surface, px, py, px, py + ph, ac, 0.8);
let show_labels = data.show_labels;
let label_font = data.label_font_size.unwrap_or(2.2);
let label_color = data.label_color.as_deref().unwrap_or("#333333");
// Bars
if data.stacked {
@@ -898,6 +1184,10 @@ fn render_chart_bar(
let bx = px + ci as f64 * cat_width + cat_width * bar_gap / 2.0;
let color = parse_color(data.colors.get(si).map(|s| s.as_str()).unwrap_or("#4F46E5"));
chart_rect(surface, bx, by, group_width, bh.max(0.0), color);
if show_labels && val > 0.0 {
let label = chart_format_value(val);
chart_text_centered(surface, bx + group_width / 2.0, by + bh / 2.0 + label_font * 0.15, &label, label_font, label_color, fonts, measurer);
}
y_off += bh;
}
}
@@ -911,9 +1201,20 @@ fn render_chart_bar(
let by = py + ph - bh;
let color = parse_color(data.colors.get(si).map(|s| s.as_str()).unwrap_or("#4F46E5"));
chart_rect(surface, bx, by, bar_w.max(0.1), bh.max(0.0), color);
if show_labels {
let label = chart_format_value(val);
chart_text_centered(surface, bx + bar_w / 2.0, by - 0.8, &label, label_font, label_color, fonts, measurer);
}
}
}
}
// X axis category labels
render_chart_x_labels(surface, &data.categories, px, py + ph, pw, fonts, measurer);
// X axis line
let ac = parse_color("#9CA3AF");
chart_line_seg(surface, px, py + ph, px + pw, py + ph, ac, 0.8);
}
/// Line chart — tum koordinatlar mm cinsinden (mutlak sayfa pozisyonu)
@@ -921,6 +1222,7 @@ fn render_chart_line(
surface: &mut krilla::surface::Surface<'_>,
data: &crate::ChartRenderData,
px: f64, py: f64, pw: f64, ph: f64,
fonts: &FontCollection, measurer: &mut TextMeasurer,
) {
if data.categories.is_empty() || data.series.is_empty() { return; }
@@ -930,19 +1232,15 @@ fn render_chart_line(
let line_w = data.line_width.unwrap_or(0.5);
let show_points = data.show_points.unwrap_or(true);
// Grid
if data.show_grid {
let gc = parse_color(data.grid_color.as_deref().unwrap_or("#E5E7EB"));
for i in 0..=5 {
let frac = i as f64 / 5.0;
let gy = py + ph - frac * ph;
chart_line_seg(surface, px, gy, px + pw, gy, gc, 0.4);
}
}
let show_grid = data.show_grid;
let grid_color = data.grid_color.as_deref().unwrap_or("#E5E7EB");
// Axis
let ac = parse_color("#9CA3AF");
chart_line_seg(surface, px, py + ph, px + pw, py + ph, ac, 0.8);
// Grid + Y axis labels
render_chart_y_axis(surface, min_val, max_val, px, py, pw, ph, show_grid, grid_color, fonts, measurer);
let show_labels = data.show_labels;
let label_font = data.label_font_size.unwrap_or(2.2);
let label_color = data.label_color.as_deref().unwrap_or("#333333");
for (si, series) in data.series.iter().enumerate() {
let color = parse_color(data.colors.get(si).map(|s| s.as_str()).unwrap_or("#4F46E5"));
@@ -993,7 +1291,23 @@ fn render_chart_line(
if let Some(p) = circle { surface.draw_path(&p); }
}
}
// Value labels on points
if show_labels {
for (ci, val) in series.values.iter().enumerate() {
let (lx, ly) = points[ci];
let label = chart_format_value(*val);
chart_text_centered(surface, lx, ly - 1.5, &label, label_font, label_color, fonts, measurer);
}
}
}
// X axis category labels
render_chart_x_labels_line(surface, &data.categories, px, py + ph, pw, fonts, measurer);
// Axis line
let ac = parse_color("#9CA3AF");
chart_line_seg(surface, px, py + ph, px + pw, py + ph, ac, 0.8);
}
/// Pie/donut chart — tum koordinatlar mm cinsinden
@@ -1001,6 +1315,7 @@ fn render_chart_pie(
surface: &mut krilla::surface::Surface<'_>,
data: &crate::ChartRenderData,
px: f64, py: f64, pw: f64, ph: f64,
fonts: &FontCollection, measurer: &mut TextMeasurer,
) {
let values: Vec<f64> = if data.series.len() == 1 {
data.series[0].values.clone()
@@ -1015,10 +1330,14 @@ fn render_chart_pie(
let cx = px + pw / 2.0;
let cy = py + ph / 2.0;
let radius = pw.min(ph) / 2.0 * 0.9;
let radius = pw.min(ph) / 2.0 * 0.65;
let inner_frac = data.inner_radius.unwrap_or(0.0).clamp(0.0, 0.9);
let inner_r = radius * inner_frac;
let show_labels = data.show_labels;
let label_font = data.label_font_size.unwrap_or(3.0);
let label_color = data.label_color.as_deref().unwrap_or("#333333");
let mut start_angle = -std::f64::consts::FRAC_PI_2;
for (i, val) in values.iter().enumerate() {
@@ -1038,6 +1357,41 @@ fn render_chart_pie(
let path = build_arc_path(cx, cy, radius, inner_r, start_angle, end_angle);
if let Some(p) = path { surface.draw_path(&p); }
// Percentage label inside slice
if show_labels {
let mid_angle = start_angle + sweep / 2.0;
let label_r = if inner_r > 0.0 { (radius + inner_r) / 2.0 } else { radius * 0.65 };
let lx = cx + label_r * mid_angle.cos();
let ly = cy + label_r * mid_angle.sin();
let pct = (val / total * 100.0).round();
let label = format!("{}%", pct);
chart_text_centered(surface, lx, ly, &label, label_font, label_color, fonts, measurer);
}
// Category name label outside slice with leader line
if i < data.categories.len() {
let mid_angle = start_angle + sweep / 2.0;
let line_start_r = radius;
let line_end_r = radius + 3.0;
let text_r = radius + 4.0;
// Leader line
let lx1 = cx + line_start_r * mid_angle.cos();
let ly1 = cy + line_start_r * mid_angle.sin();
let lx2 = cx + line_end_r * mid_angle.cos();
let ly2 = cy + line_end_r * mid_angle.sin();
chart_line_seg(surface, lx1, ly1, lx2, ly2, parse_color("#999999"), 0.5);
// Category text
let tx = cx + text_r * mid_angle.cos();
let ty = cy + text_r * mid_angle.sin();
if mid_angle.cos() >= 0.0 {
chart_text_start(surface, tx, ty, &data.categories[i], 2.5, "#555555", fonts, measurer);
} else {
chart_text_end(surface, tx, ty, &data.categories[i], 2.5, "#555555", fonts, measurer);
}
}
start_angle = end_angle;
}
}

View File

@@ -771,6 +771,13 @@ fn collect_layout(
show_points: cd.style.show_points,
line_width: cd.style.line_width,
background_color: cd.style.background_color.clone(),
label_color: cd.labels.as_ref().and_then(|l| l.color.clone()),
legend_show: cd.legend.as_ref().is_some_and(|l| l.show),
legend_position: cd.legend.as_ref().and_then(|l| l.position.clone()),
legend_font_size: cd.legend.as_ref().and_then(|l| l.font_size),
x_label: cd.axis.as_ref().and_then(|a| a.x_label.clone()),
y_label: cd.axis.as_ref().and_then(|a| a.y_label.clone()),
title_align: cd.title.as_ref().and_then(|t| t.align.clone()),
},
}
})