Mercurial Repositories > eric / file comparison
comparison: Graphics/UMLGraphicsView.py
Graphics/UMLGraphicsView.py
- changeset 2038
- 72557ef75de1
- parent 2034
- 8de0fc1f7fef
- child 2039
- fa41ccd7f7bc
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| 2037:7a3470ae170e | 2038:72557ef75de1 |
|---|---|
| 5 | 5 |
| 6 """ | 6 """ |
| 7 Module implementing a subclass of E5GraphicsView for our diagrams. | 7 Module implementing a subclass of E5GraphicsView for our diagrams. |
| 8 """ | 8 """ |
| 9 | 9 |
| 10 from PyQt4.QtCore import pyqtSignal, Qt, QSignalMapper, QFileInfo, QEvent | 10 from PyQt4.QtCore import pyqtSignal, Qt, QSignalMapper, QFileInfo, QEvent, QRectF |
| 11 from PyQt4.QtGui import QGraphicsView, QAction, QToolBar, QDialog, QPrinter, QPrintDialog | 11 from PyQt4.QtGui import QGraphicsView, QAction, QToolBar, QDialog, QPrinter, QPrintDialog |
| 12 | 12 |
| 13 from E5Graphics.E5GraphicsView import E5GraphicsView | 13 from E5Graphics.E5GraphicsView import E5GraphicsView |
| 14 | 14 |
| 15 from E5Gui import E5MessageBox, E5FileDialog | 15 from E5Gui import E5MessageBox, E5FileDialog |
| 189 self.deleteShapeAct.setEnabled(False) | 189 self.deleteShapeAct.setEnabled(False) |
| 190 | 190 |
| 191 sceneRect = self.scene().sceneRect() | 191 sceneRect = self.scene().sceneRect() |
| 192 newWidth = width = sceneRect.width() | 192 newWidth = width = sceneRect.width() |
| 193 newHeight = height = sceneRect.height() | 193 newHeight = height = sceneRect.height() |
| 194 rect = self._getDiagramRect(10) | 194 rect = self.scene().itemsBoundingRect() |
| 195 if width < rect.width(): | 195 # calculate with 10 pixel border on each side |
| 196 newWidth = rect.width() | 196 if sceneRect.right() - 10 < rect.right(): |
| 197 if height < rect.height(): | 197 newWidth = rect.right() + 10 |
| 198 newHeight = rect.height() | 198 if sceneRect.bottom() - 10 < rect.bottom(): |
| 199 newHeight = rect.bottom() + 10 | |
| 199 | 200 |
| 200 if newHeight != height or newWidth != width: | 201 if newHeight != height or newWidth != width: |
| 201 self.setSceneSize(newWidth, newHeight) | 202 self.setSceneSize(newWidth, newHeight) |
| 202 self.__checkSizeActions() | 203 self.__checkSizeActions() |
| 203 | 204 |
| 513 yOffset = (rect.y() + rect.height() // 2) - \ | 514 yOffset = (rect.y() + rect.height() // 2) - \ |
| 514 (itemrect.y() + itemrect.height() // 2) | 515 (itemrect.y() + itemrect.height() // 2) |
| 515 item.moveBy(xOffset, yOffset) | 516 item.moveBy(xOffset, yOffset) |
| 516 | 517 |
| 517 self.scene().update() | 518 self.scene().update() |
| 519 | |
| 520 def __itemsBoundingRect(self, items): | |
| 521 """ | |
| 522 Private method to calculate the bounding rectangle of the given items. | |
| 523 | |
| 524 @param items list of items to operate on (list of UMLItem) | |
| 525 @return bounding rectangle (QRectF) | |
| 526 """ | |
| 527 rect = self.scene().sceneRect() | |
| 528 right = rect.left() | |
| 529 bottom = rect.top() | |
| 530 left = rect.right() | |
| 531 top = rect.bottom() | |
| 532 for item in items: | |
| 533 rect = item.sceneBoundingRect() | |
| 534 left = min(rect.left(), left) | |
| 535 right = max(rect.right(), right) | |
| 536 top = min(rect.top(), top) | |
| 537 bottom = max(rect.bottom(), bottom) | |
| 538 return QRectF(left, top, right - left, bottom - top) | |
| 539 | |
| 540 def keyPressEvent(self, evt): | |
| 541 """ | |
| 542 Protected method handling key press events. | |
| 543 | |
| 544 @param evt reference to the key event (QKeyEvent) | |
| 545 """ | |
| 546 key = evt.key() | |
| 547 if key in [Qt.Key_Up, Qt.Key_Down, Qt.Key_Left, Qt.Key_Right]: | |
| 548 items = self.filteredItems(self.scene().selectedItems()) | |
| 549 if items: | |
| 550 if evt.modifiers() & Qt.ControlModifier: | |
| 551 stepSize = 50 | |
| 552 else: | |
| 553 stepSize = 5 | |
| 554 if key == Qt.Key_Up: | |
| 555 dx = 0 | |
| 556 dy = -stepSize | |
| 557 elif key == Qt.Key_Down: | |
| 558 dx = 0 | |
| 559 dy = stepSize | |
| 560 elif key == Qt.Key_Left: | |
| 561 dx = -stepSize | |
| 562 dy = 0 | |
| 563 else: | |
| 564 dx = stepSize | |
| 565 dy = 0 | |
| 566 for item in items: | |
| 567 item.moveBy(dx, dy) | |
| 568 evt.accept() | |
| 569 return | |
| 570 | |
| 571 super().keyPressEvent(evt) | |
| 518 | 572 |
| 519 def wheelEvent(self, evt): | 573 def wheelEvent(self, evt): |
| 520 """ | 574 """ |
| 521 Protected method to handle wheel events. | 575 Protected method to handle wheel events. |
| 522 | 576 |
