Mercurial Repositories > eric / file comparison
comparison: E5Graphics/E5ArrowItem.py
E5Graphics/E5ArrowItem.py
- changeset 2990
- 583beaf0b4b8
- parent 2302
- f29e9405c851
- child 3057
- 10516539f238
- child 3160
- 209a07d7e401
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| 2989:7efa8b8b6903 | 2990:583beaf0b4b8 |
|---|---|
| 8 """ | 8 """ |
| 9 | 9 |
| 10 import math | 10 import math |
| 11 | 11 |
| 12 from PyQt4.QtCore import QPointF, QRectF, QSizeF, QLineF, Qt | 12 from PyQt4.QtCore import QPointF, QRectF, QSizeF, QLineF, Qt |
| 13 from PyQt4.QtGui import QAbstractGraphicsShapeItem, QGraphicsItem, QStyle, QPen, QPolygonF | 13 from PyQt4.QtGui import QAbstractGraphicsShapeItem, QGraphicsItem, QStyle, \ |
| 14 QPen, QPolygonF | |
| 14 | 15 |
| 15 NormalArrow = 1 | 16 NormalArrow = 1 |
| 16 WideArrow = 2 | 17 WideArrow = 2 |
| 17 | 18 |
| 18 ArrowheadAngleFactor = 0.26179938779914941 # 0.5 * math.atan(math.sqrt(3.0) / 3.0) | 19 ArrowheadAngleFactor = 0.26179938779914941 |
| 20 # 0.5 * math.atan(math.sqrt(3.0) / 3.0) | |
| 19 | 21 |
| 20 | 22 |
| 21 class E5ArrowItem(QAbstractGraphicsShapeItem): | 23 class E5ArrowItem(QAbstractGraphicsShapeItem): |
| 22 """ | 24 """ |
| 23 Class implementing an arrow graphics item subclass. | 25 Class implementing an arrow graphics item subclass. |
| 99 | 101 |
| 100 @param painter reference to the painter object (QPainter) | 102 @param painter reference to the painter object (QPainter) |
| 101 @param option style options (QStyleOptionGraphicsItem) | 103 @param option style options (QStyleOptionGraphicsItem) |
| 102 @param widget optional reference to the widget painted on (QWidget) | 104 @param widget optional reference to the widget painted on (QWidget) |
| 103 """ | 105 """ |
| 104 if (option.state & QStyle.State_Selected) == QStyle.State(QStyle.State_Selected): | 106 if (option.state & QStyle.State_Selected) == \ |
| 107 QStyle.State(QStyle.State_Selected): | |
| 105 width = 2 | 108 width = 2 |
| 106 else: | 109 else: |
| 107 width = 1 | 110 width = 1 |
| 108 | 111 |
| 109 # draw the line first | 112 # draw the line first |
| 110 line = QLineF(self._origin, self._end) | 113 line = QLineF(self._origin, self._end) |
| 111 painter.setPen(QPen(Qt.black, width, Qt.SolidLine, Qt.FlatCap, Qt.MiterJoin)) | 114 painter.setPen( |
| 115 QPen(Qt.black, width, Qt.SolidLine, Qt.FlatCap, Qt.MiterJoin)) | |
| 112 painter.drawLine(line) | 116 painter.drawLine(line) |
| 113 | 117 |
| 114 # draw the arrow head | 118 # draw the arrow head |
| 115 arrowAngle = self._type * ArrowheadAngleFactor | 119 arrowAngle = self._type * ArrowheadAngleFactor |
| 116 slope = math.atan2(line.dy(), line.dx()) | 120 slope = math.atan2(line.dy(), line.dx()) |
