在elmt中为文本添加对齐点坐标，在qet中将以对齐点坐标为基准计算左上角坐标

src/qelmt/dynamictext.rs

@@ -64,86 +64,14 @@ impl From<&DynamicText> for XMLElement {
         // "guess" the width by number of characters and font-size:
         //
         let graphene_count = txt.text.graphemes(true).count();
-        let mut cjk_char_count = 0;
-        // let mut graphene_count = 0;
-        // for grapheme in txt.text.graphemes(true) {
-        //     graphene_count += 1;
-        //     if grapheme.chars().any(|c| {
-        //         // 检查是否为中文字符（包括中日韩统一表意文字）
-        //         (c >= '\u{4E00}' && c <= '\u{9FFF}') ||  // CJK统一表意文字
-        //         (c >= '\u{3400}' && c <= '\u{4DBF}') ||  // CJK扩展A
-        //         (c >= '\u{20000}' && c <= '\u{2A6DF}') || // CJK扩展B
-        //         (c >= '\u{2A700}' && c <= '\u{2B73F}') || // CJK扩展C
-        //         (c >= '\u{2B740}' && c <= '\u{2B81F}') || // CJK扩展D
-        //         (c >= '\u{2B820}' && c <= '\u{2CEAF}') || // CJK扩展E
-        //         (c >= '\u{F900}' && c <= '\u{FAFF}') ||   // CJK兼容表意文字
-        //         (c >= '\u{2F800}' && c <= '\u{2FA1F}')    // CJK兼容表意文字补充
-        //     }) {
-        //         cjk_char_count += 1;
-        //     }
-        // }
 
         let txt_width = if txt.reference_rectangle_width > 2.0 {
             txt.reference_rectangle_width
         } else {
             // 不同的字母，宽度与高度的比例并不相同，0.75只是一个平均值
             (graphene_count as f64) * pt_size * 0.75
-            // 根据字符类型计算宽度，考虑不同字符的宽高比例
-            // let mut total_width = 0.0;
-            // for grapheme in txt.text.graphemes(true) {
-            //     let char_width = if grapheme.chars().any(|c| {
-            //         // 检查是否为中文字符（包括中日韩统一表意文字）
-            //         (c >= '\u{4E00}' && c <= '\u{9FFF}') ||  // CJK统一表意文字
-            //         (c >= '\u{3400}' && c <= '\u{4DBF}') ||  // CJK扩展A
-            //         (c >= '\u{20000}' && c <= '\u{2A6DF}') || // CJK扩展B
-            //         (c >= '\u{2A700}' && c <= '\u{2B73F}') || // CJK扩展C
-            //         (c >= '\u{2B740}' && c <= '\u{2B81F}') || // CJK扩展D
-            //         (c >= '\u{2B820}' && c <= '\u{2CEAF}') || // CJK扩展E
-            //         (c >= '\u{F900}' && c <= '\u{FAFF}') ||   // CJK兼容表意文字
-            //         (c >= '\u{2F800}' && c <= '\u{2FA1F}')    // CJK兼容表意文字补充
-            //     }) {
-            //         // 中文字符：宽高比 1:1
-            //         cjk_char_count += 1;
-            //         pt_size * 1.5
-            //     } else if grapheme.chars().any(|c| matches!(c, 'i' | 'l' | 'I' | ',' | ';' | ':' | '!')) {
-            //         pt_size * 0.3
-            //     } else if grapheme.chars().any(|c| matches!(c, 'W' | 'M' | '@' )) {
-            //         pt_size * 1.0
-            //     } else if grapheme.chars().any(|c| matches!(c, 'w' |'m' | '%' )) {
-            //         pt_size * 0.9
-            //     }else if grapheme.chars().any(|c| matches!(c, 'f' |'j' | 't' | 'r' | 'J' | 'T' | 'F' | '/' | '\\' | 's' | 'z' )) {
-            //         // 其他标点符号：宽高比约 0.4:1
-            //         pt_size * 0.5
-            //     } else {
-            //         // 中等宽度字母（默认）：宽高比约 0.6:1
-            //         pt_size * 0.7
-            //     };
-            //     total_width += char_width;
-            // }
-            // total_width
         };
 
-        // let x_pos = {
-        //     let x_pos = txt.x + 0.5 - (pt_size / 8.0) - 4.05;
-        //     // match txt.h_alignment {
-        //     //     HAlignment::Left => x_pos,
-        //     //     HAlignment::Center => x_pos - txt_width / 2.0,
-        //     //     HAlignment::Right => x_pos - txt_width,
-        //     // }
-        //     x_pos  // 直接返回基础x_pos，不进行水平对齐调整
-        // };
-        // // let y_pos = txt.y + 0.5 - (7.0 / 5.0 * pt_size + 26.0 / 5.0) + pt_size;
-        // let y_pos = {
-        //     let base_y_pos = txt.y + 0.5 - (7.0 / 5.0 * pt_size + 26.0 / 5.0) + pt_size;
-        //     match txt.v_alignment {
-        //         VAlignment::Top => base_y_pos,
-        //         VAlignment::Center => base_y_pos - pt_size / 2.0,
-        //         VAlignment::Bottom => base_y_pos - pt_size,
-        //     }
-        // };
-
-        // 如果采用计算对齐的方式，可能还要考虑字体宽度的偏差。。
-
         println!("文本:{}", txt.text);
         println!("对齐方式：{}, {}", txt.h_alignment, txt.v_alignment);
         println!("文本宽度: {}", txt_width);
@@ -151,48 +79,42 @@ impl From<&DynamicText> for XMLElement {
         println!("初始左下角位置: x={}, y={}", txt.x, txt.y);
         println!("初始对齐位置: x={}, y={}", txt.align_x, txt.align_y);
         println!("旋转角度: {}", txt.rotation);
-        // println!("cjk_char_count: {}", cjk_char_count);
 
         // 计算基础位置（不考虑旋转）
-        // txt.x和txt.y现在是对齐点坐标，需要根据对齐方式计算出左上角位置
+        // txt.x和txt.y现在是左下角位置
-        // 首先根据水平对齐方式计算左边界的x坐标
+        let left_x = txt.x;
-        // let left_x = txt.x;
+        // align_x 是对齐点的x坐标，后面加的数字是考虑到QET中boundingRect的没有完全贴合文本内容
-        let left_x = match txt.h_alignment {
+        let mut align_x = match txt.h_alignment {
-            HAlignment::Left => txt.x - 0.5,
+            HAlignment::Left => txt.align_x - 0.5,
             HAlignment::Center => txt.align_x - 1.0,
             HAlignment::Right => txt.align_x - 2.0
         };
         
         // 根据垂直对齐方式计算顶部的y坐标
-        // let top_y = match txt.v_alignment {
-        //     VAlignment::Top => txt.y + pt_size / 2.0,
-        //     VAlignment::Center => txt.y - pt_size / 2.0,
-        //     VAlignment::Bottom => txt.y - pt_size + pt_size / 2.0,
-        // };
-
         let top_y = match txt.v_alignment {
+            VAlignment::Top => txt.y + pt_size / 2.0,
+            VAlignment::Center => txt.y - pt_size / 2.0,
+            VAlignment::Bottom => txt.y - pt_size + pt_size / 2.0,
+        };
+
+        // align_y 是对齐点的y坐标，后面加的数字是考虑到QET中boundingRect的没有完全贴合文本内容
+        let mut align_y = match txt.v_alignment {
             VAlignment::Top => txt.align_y - 0.5,
             VAlignment::Center => txt.align_y + 0.5,
-            VAlignment::Bottom => txt.y + 1.0
+            VAlignment::Bottom => txt.align_y + 1.0
         };
 
-        println!("左上角位置: x={}, y={}", left_x, top_y);
+        if(txt.h_alignment == HAlignment::Left && txt.v_alignment==VAlignment::Bottom) {
+            align_x = txt.x-0.5;
+            align_y = txt.y+1.0;
+        }
 
-        // 根据是否包含中文字符调整字体大小相关的偏移量
-        let cjk_offset:f64 = (cjk_char_count as f64) * pt_size * 0.75;
 
-        // 左对齐是不需要中文偏移的，居中对齐需要偏移，右对齐要偏移
+        println!("左上角位置: x={}, y={}", left_x, top_y);
-        let base_x = left_x;// + 0.5 - (pt_size / 8.0) - 4.05;
-        // - match txt.h_alignment {
-        //     HAlignment::Left => 0.0,
-        //     HAlignment::Center => cjk_offset / 2.0,
-        //     HAlignment::Right => cjk_offset,
-        // };
 
-        // let base_y = top_y + 0.5 - (7.0 / 5.0 * pt_size + 26.0 / 5.0)  + pt_size;
+        let base_x = left_x;
         let base_y = top_y;
 
-
         // 如果有旋转角度，应用旋转变换
         let (x_pos, y_pos) = if txt.rotation != 0.0 {
             let rotation_rad = txt.rotation.to_radians();
@@ -226,6 +148,8 @@ impl From<&DynamicText> for XMLElement {
         dtxt_xml.add_attribute("frame", txt.frame);
         dtxt_xml.add_attribute("text_width", txt.text_width);
         dtxt_xml.add_attribute("color", txt.color.display_rgb());
+        dtxt_xml.add_attribute("align_x", two_dec(align_x));
+        dtxt_xml.add_attribute("align_y", two_dec(align_y));
 
         //If I ever add support for other text_from types, element and composite text
         //I'll need to add more smarts here, as there may be some other children components
@@ -348,7 +272,7 @@ impl<'a> DTextBuilder<'a> {
                     txt.text_height,
                     txt.value.clone(),
                     HAlignment::from(txt.horizontal_text_justification),
-                    VAlignment::from(txt.vertical_text_justification),
+                    VAlignment::from_text_entity(txt.vertical_text_justification, false),
                     0.0, // as Placeholder: no "reference_rectangle_width" with Text!!!
                     txt.second_alignment_point.x,
                     -txt.second_alignment_point.y
@@ -411,7 +335,7 @@ impl<'a> DTextBuilder<'a> {
                     attrib.text_height,
                     attrib.text_tag.clone(),
                     HAlignment::from(attrib.horizontal_text_justification),
-                    VAlignment::from(attrib.vertical_text_justification),
+                    VAlignment::from_text_entity(attrib.vertical_text_justification, true),
                     0.0, // as Placeholder: not need to check if Attrib has something similar
                     attrib.second_alignment_point.x,
                     -attrib.second_alignment_point.y

src/qelmt/mod.rs

@@ -1331,7 +1331,7 @@ impl Display for ItemType {
     }
 }
 
-#[derive(Debug)]
+#[derive(Debug, PartialEq)]
 enum HAlignment {
     Left,
     Center,
@@ -1384,7 +1384,7 @@ impl From<HorizontalTextJustification> for HAlignment {
     }
 }
 
-#[derive(Debug)]
+#[derive(Debug, PartialEq)]
 enum VAlignment {
     Top,
     Center,
@@ -1434,6 +1434,26 @@ impl From<VerticalTextJustification> for VAlignment {
     }
 }
 
+impl VAlignment {
+    /// 根据文本实体类型和垂直对齐方式创建VAlignment
+    /// 对于Attrib实体，baseline对齐到底部
+    /// 对于MText和Text实体，baseline对齐到中间
+    pub fn from_text_entity(value: VerticalTextJustification, is_attrib: bool) -> Self {
+        match value {
+            VerticalTextJustification::Top => VAlignment::Top,
+            VerticalTextJustification::Middle => VAlignment::Center,
+            VerticalTextJustification::Bottom => VAlignment::Bottom,
+            VerticalTextJustification::Baseline => {
+                if is_attrib {
+                    VAlignment::Bottom  // Attrib的baseline对齐到底部
+                } else {
+                    VAlignment::Center  // MText和Text的baseline对齐到中间
+                }
+            }
+        }
+    }
+}
+
 #[derive(Debug)]
 enum LineEnd {
     None,