Mercurial Repositories > eric / file comparison
comparison: Graphics/AssociationItem.py
Graphics/AssociationItem.py
- changeset 945
- 8cd4d08fa9f6
- parent 791
- 9ec2ac20e54e
- child 1112
- 8a7d1b9d18db
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| 944:1b59c4ba121e | 945:8cd4d08fa9f6 |
|---|---|
| 25 NorthEast = 6 | 25 NorthEast = 6 |
| 26 SouthEast = 7 | 26 SouthEast = 7 |
| 27 SouthWest = 8 | 27 SouthWest = 8 |
| 28 Center = 9 | 28 Center = 9 |
| 29 | 29 |
| 30 | |
| 30 class AssociationItem(E5ArrowItem): | 31 class AssociationItem(E5ArrowItem): |
| 31 """ | 32 """ |
| 32 Class implementing a graphics item for an association between two items. | 33 Class implementing a graphics item for an association between two items. |
| 33 | 34 |
| 34 The association is drawn as an arrow starting at the first items and | 35 The association is drawn as an arrow starting at the first items and |
| 35 ending at the second. | 36 ending at the second. |
| 36 """ | 37 """ |
| 37 def __init__(self, itemA, itemB, type = Normal, parent = None): | 38 def __init__(self, itemA, itemB, type=Normal, parent=None): |
| 38 """ | 39 """ |
| 39 Constructor | 40 Constructor |
| 40 | 41 |
| 41 @param itemA first widget of the association | 42 @param itemA first widget of the association |
| 42 @param itemB second widget of the association | 43 @param itemB second widget of the association |
| 56 arrowFilled = True | 57 arrowFilled = True |
| 57 elif type == Generalisation: | 58 elif type == Generalisation: |
| 58 arrowType = WideArrow | 59 arrowType = WideArrow |
| 59 arrowFilled = False | 60 arrowFilled = False |
| 60 | 61 |
| 61 E5ArrowItem.__init__(self, QPointF(0, 0), QPointF(100, 100), | 62 E5ArrowItem.__init__(self, QPointF(0, 0), QPointF(100, 100), |
| 62 arrowFilled, arrowType, parent) | 63 arrowFilled, arrowType, parent) |
| 63 | 64 |
| 64 self.setFlag(QGraphicsItem.ItemIsMovable, False) | 65 self.setFlag(QGraphicsItem.ItemIsMovable, False) |
| 65 self.setFlag(QGraphicsItem.ItemIsSelectable, False) | 66 self.setFlag(QGraphicsItem.ItemIsSelectable, False) |
| 66 | 67 |
| 139 </pre> | 140 </pre> |
| 140 | 141 |
| 141 Each diagonal is defined by two corners of the bounding rectangle | 142 Each diagonal is defined by two corners of the bounding rectangle |
| 142 | 143 |
| 143 To calculate the start point we have to find out in which | 144 To calculate the start point we have to find out in which |
| 144 region (defined by itemA's diagonals) is itemB's TopLeft corner | 145 region (defined by itemA's diagonals) is itemB's TopLeft corner |
| 145 (lets call it region M). After that the start point will be | 146 (lets call it region M). After that the start point will be |
| 146 the middle point of rectangle's side contained in region M. | 147 the middle point of rectangle's side contained in region M. |
| 147 | 148 |
| 148 To calculate the end point we repeat the above but in the opposite direction | 149 To calculate the end point we repeat the above but in the opposite direction |
| 149 (from itemB to itemA) | 150 (from itemB to itemA) |
| 195 | 196 |
| 196 self.__updateEndPoint(self.regionB, False) | 197 self.__updateEndPoint(self.regionB, False) |
| 197 | 198 |
| 198 def __findPointRegion(self, rect, posX, posY): | 199 def __findPointRegion(self, rect, posX, posY): |
| 199 """ | 200 """ |
| 200 Private method to find out, which region of rectangle rect contains the point | 201 Private method to find out, which region of rectangle rect contains the point |
| 201 (PosX, PosY) and returns the region number. | 202 (PosX, PosY) and returns the region number. |
| 202 | 203 |
| 203 @param rect rectangle to calculate the region for (QRectF) | 204 @param rect rectangle to calculate the region for (QRectF) |
| 204 @param posX x position of point (float) | 205 @param posX x position of point (float) |
| 205 @param posY y position of point (float) | 206 @param posY y position of point (float) |
