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95 lines
2.8 KiB
Rust
95 lines
2.8 KiB
Rust
//! 旧式 QET `<text>` 图元转换。
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//!
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//! 当前主流程主要使用 [`super::DynamicText`]；该类型保留给仍需要静态文本
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//! XML 的路径。它只掌握锚点而没有可靠字形测量，因此右/下边界尚未实现。
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use super::{two_dec, FontInfo, ScaleEntity};
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use dxf::entities;
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use hex_color::HexColor;
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use simple_xml_builder::XMLElement;
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#[derive(Debug)]
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/// QET 静态文本的内容、字体、颜色、位置和旋转。
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pub struct Text {
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rotation: f64,
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value: String,
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pub x: f64,
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pub y: f64,
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font: FontInfo,
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color: HexColor,
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}
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impl From<(&entities::Text, HexColor)> for Text {
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fn from((txt, color): (&entities::Text, HexColor)) -> Self {
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// STANDARD 是 DXF 默认样式，无需在 QET 字体串中重复写出。
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let mut font = FontInfo::default();
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font.apply_height(txt.text_height);
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if !txt.text_style_name.is_empty() && txt.text_style_name != "STANDARD" {
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font.style_name = Some(txt.text_style_name.clone());
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}
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Text {
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x: txt.location.x,
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y: -txt.location.y,
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rotation: if txt.rotation.abs().round() as i64 % 360 != 0 {
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txt.rotation - 180.0
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} else {
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0.0
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},
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color,
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font,
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value: txt.value.clone(),
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}
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}
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}
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impl From<&Text> for XMLElement {
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fn from(txt: &Text) -> Self {
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// QET 静态文本把内容保存在 `text` 属性，而不是子节点中。
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let mut txt_xml: XMLElement = XMLElement::new("text");
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txt_xml.add_attribute("x", two_dec(txt.x));
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txt_xml.add_attribute("y", two_dec(txt.y));
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txt_xml.add_attribute("rotation", two_dec(txt.rotation));
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txt_xml.add_attribute("color", txt.color.display_rgb());
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txt_xml.add_attribute("font", &txt.font);
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txt_xml.add_attribute("text", &txt.value);
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txt_xml
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}
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}
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impl Text {
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/// 围绕块插入支点旋转文本锚点，并叠加文本自身旋转角。
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pub(crate) fn rotate_around(&mut self, pivot_x: f64, pivot_y: f64, angle_deg: f64) {
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let (x, y) = super::rotate_point_around(self.x, self.y, pivot_x, pivot_y, angle_deg);
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self.x = x;
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self.y = y;
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self.rotation = super::normalize_angle(self.rotation + angle_deg);
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}
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}
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impl ScaleEntity for Text {
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fn scale(&mut self, fact_x: f64, fact_y: f64) {
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self.x *= fact_x;
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self.y *= fact_y;
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self.font.scale(fact_y);
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}
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fn left_bound(&self) -> f64 {
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self.x
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}
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fn top_bound(&self) -> f64 {
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self.y
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}
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fn right_bound(&self) -> f64 {
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// 静态 Text 没有字形布局结果，不能可靠计算右边界。
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todo!()
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}
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fn bot_bound(&self) -> f64 {
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// 静态 Text 没有字形布局结果，不能可靠计算下边界。
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todo!()
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}
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}
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