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70 lines
2.0 KiB
70 lines
2.0 KiB
from PySide6.QtCore import Qt, QRectF, Signal, QObject
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from PySide6.QtGui import QPainter, QPen, QColor, QFontMetricsF, QPainterPath
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from PySide6.QtWidgets import QGraphicsItem
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class RoundedRectangleItem(QGraphicsItem, QObject):
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selected = Signal(int)
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unselected = Signal(int)
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def __init__(self, x, y, text, id):
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QGraphicsItem.__init__(self)
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QObject.__init__(self)
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self.rect = QRectF(x, y, 70, 70)
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self.radius = 10
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self.text = text
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self.id = id
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self.isSelected = False # 是否被选中
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def boundingRect(self):
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return self.rect
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def shape(self):
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path = QPainterPath()
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path.addRoundedRect(self.rect, self.radius, self.radius)
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return path
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def paint(self, painter, option, widget):
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painter.setRenderHint(QPainter.Antialiasing) # 设置抗锯齿
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pen = QPen(Qt.black)
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painter.setPen(pen)
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if self.isSelected:
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# 如果被选中，设置不同的填充颜色和边框样式
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painter.setBrush(QColor(255, 0, 0, 255)) # 设置选中时的填充颜色
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pen.setWidth(2) # 设置边框宽度
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pen.setStyle(Qt.DashLine) # 设置虚线边框样式
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painter.setPen(pen)
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else:
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painter.setBrush(QColor(0, 255, 0, 255)) # 设置默认的填充颜色
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# 绘制圆角矩形
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painter.drawRoundedRect(self.rect, self.radius, self.radius)
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# 计算文本的位置
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font = painter.font()
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font.setPointSize(36)
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painter.setFont(font)
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metrics = QFontMetricsF(font)
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text_bounding_rect = metrics.boundingRect(str(self.text))
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text_width = text_bounding_rect.width()
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text_height = text_bounding_rect.height()
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text_x = self.rect.center().x() - text_width / 2
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text_y = self.rect.center().y() + text_height / 4
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# 绘制文本
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painter.drawText(text_x, text_y, str(self.text))
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def mousePressEvent(self, event):
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# 鼠标点击时切换选中状态
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self.isSelected = not self.isSelected
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self.update()
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# 发射选中信号
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if self.isSelected:
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self.selected.emit(self.id)
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else:
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self.unselected.emit(self.id)
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super().mousePressEvent(event)
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