修复因场景模式修改为绝对坐标引起的打印补全、蜂鸣器报警改为常响、添加相位故障关闭回收槽功能、取消翻转上下颠倒，与莱宾格行为同步、修改场景模式默认字体为7点、取消变量占位图设计

scene/ItemCommon.cpp

@@ -552,10 +552,12 @@ QImage ItemUtils::txtToImage(const QString &txt, const QFont &font, const QColor
         return QImage();
     }
 
+    QString targetTxt = txt.left(400);
+
     // 用 QFontMetrics 计算给定字体下文本的水平推进宽度和单行高度，
     // 这样初始画布刚好能容纳整段文本，避免后续裁剪时出现截断
     QFontMetrics fm(font);
-    int width = fm.horizontalAdvance(txt);
+    int width = fm.horizontalAdvance(targetTxt);
     int height = fm.height();
 
     // 优先使用字体名中后缀标识的字体高度
@@ -568,17 +570,21 @@ QImage ItemUtils::txtToImage(const QString &txt, const QFont &font, const QColor
             break;
         }
     }
-    if(!numStr.isEmpty()) {
-        height = numStr.toInt();
-        if(height < 5 || height > 32)
+    if (!numStr.isEmpty()) {
+        int h = numStr.toInt();
+        if (h >= 5 && h <= 32) {
+            height = h;
+        } else {
             height = fm.height();
+        }
     }
 
     if (width <= 0 || height <= 0) {
         return QImage();
     }
 
-    QImage img(width, height, QImage::Format_ARGB32);
+    int letterSpace = (int)(font.letterSpacing());
+    QImage img(width - letterSpace, height, QImage::Format_ARGB32);
 
     QRgb bgRgb = bgColor.rgba();
     img.fill(bgRgb);
@@ -587,11 +593,10 @@ QImage ItemUtils::txtToImage(const QString &txt, const QFont &font, const QColor
     painter.begin(&img);
     painter.setFont(font);
     painter.setPen(fgColor);
-    painter.drawText(img.rect(), txt);
-    painter.end();
 
+    // 使用基线坐标绘制单行文本，确保 glyph 间距按字体度量精确排列
+    int baselineY = fm.ascent();
+    painter.drawText(QPoint(0, baselineY), targetTxt);
+    painter.end();
     return img;
-    
-    // 按背景色裁剪，使输出图像紧贴文字像素的最小包围盒（详见函数注释）
-    return clipTxtImage(img, bgRgb);
 }

scene/PicCounterItem.cpp

@@ -32,6 +32,11 @@ void PicCounterItem::setSource(QVariant var)
 
 void PicCounterItem::setCounter(COUNTER_TYPE type, int digitalNum)
 {
+    if(type != COUNTER_TYPE_1 && type != COUNTER_TYPE_2) {
+        qWarning() << "Missing counter type: " << type;
+        return;
+    }
+
     // 直接修改字体，生成新的HTML占位图
     auto font = this->font();
     QString fontname = font.family();
@@ -59,13 +64,13 @@ void PicCounterItem::setCounter(COUNTER_TYPE type, int digitalNum)
     width += letterSpace();
                             
     m_counterType = type;
-    m_digitalNum = digitalNum;
-    m_digitalImg = strToImage(QString("8").repeated(digitalNum));
+    m_digitalNum = qBound(1, digitalNum, 8);
+    m_digitalImg = strToImage(QString("8").repeated(m_digitalNum));
     applyModify();
 
     qInfo() << "Counter item set to " << type ;
-    qInfo() << ">\tdigitalNum: " << digitalNum << ", font name: " << fontname << ", pixel size: " << pixelSize;
-    qInfo() << ">\tletterSpace: " << letterSpace() << "charRom width: " << digitalNum * width << " width: " << width;
+    qInfo() << ">\tdigitalNum: " << m_digitalNum << ", font name: " << fontname << ", pixel size: " << pixelSize;
+    qInfo() << ">\tletterSpace: " << letterSpace() << "charRom width: " << m_digitalNum * width << " width: " << width;
 }
 
 int PicCounterItem::charWidth()

scene/pictextitem.cpp

@@ -16,7 +16,7 @@ PicTextItem::PicTextItem(QGraphicsItem *parent, QGraphicsScene *scene, const Sou
     setFlag(QGraphicsItem::ItemIsSelectable);
     setFlag(QGraphicsItem::ItemIsFocusable);
     setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
-    QFont f("Dinkie9");
+    QFont f("WenQuanYi7");
 //    font.setFamily("wenquanyi");
 //    font.setPixelSize(5);
     f.setLetterSpacing(QFont::AbsoluteSpacing, 1);

scene/pictextitem.h

@@ -58,7 +58,7 @@ struct TextItemModel {
     int boldMultiple = 1;
     int letterSpace = 0;
     bool colorReversal = false;
-    QString fontFamily = "Dinkie9";
+    QString fontFamily = "WenQuanYi7";
     int fontSize = 9;
 
     std::function<QImage()> imageGenerator; // 图片生成函数