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Integrate horizontal/vertical help lines in RectItemInserter.

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This commit is contained in:
Antonino Simone Di Stefano
2016-06-22 16:34:21 +02:00
committed by nilsonholger
parent 2b49500f64
commit 06feb9bfeb
1 changed files with 35 additions and 4 deletions
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sloth/items/inserters.py
+35 -4
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@@ -84,9 +84,17 @@ class RectItemInserter(ItemInserter):
prefix="", commit=True):
ItemInserter.__init__(self, labeltool, scene, default_properties,
prefix, commit)
self._aiming = True
self._helpLines = None
self._helpLinesPen = QPen(Qt.green, 2, Qt.DashLine)
self._init_pos = None
def mousePressEvent(self, event, image_item):
self._aiming = False
if self._helpLines is not None:
self._scene.removeItem(self._helpLines)
self._helpLines = None
pos = event.scenePos()
self._init_pos = pos
self._item = QGraphicsRectItem(QRectF(pos.x(), pos.y(), 0, 0))
@@ -95,10 +103,28 @@ class RectItemInserter(ItemInserter):
event.accept()
def mouseMoveEvent(self, event, image_item):
if self._item is not None:
assert self._init_pos is not None
rect = QRectF(self._init_pos, event.scenePos()).normalized()
self._item.setRect(rect)
if self._aiming:
if self._helpLines is not None:
self._scene.removeItem(self._helpLines)
self._helpLines = QGraphicsItemGroup()
group = self._helpLines
verticalHelpLine = QGraphicsLineItem(event.scenePos().x(), 0, event.scenePos().x(), self._scene.height())
horizontalHelpLine = QGraphicsLineItem(0, event.scenePos().y(), self._scene.width(), event.scenePos().y())
horizontalHelpLine.setPen(self._helpLinesPen)
verticalHelpLine.setPen(self._helpLinesPen)
group.addToGroup(verticalHelpLine);
group.addToGroup(horizontalHelpLine);
self._scene.addItem(self._helpLines)
else:
if self._item is not None:
assert self._init_pos is not None
rect = QRectF(self._init_pos, event.scenePos()).normalized()
self._item.setRect(rect)
event.accept()
@@ -119,12 +145,17 @@ class RectItemInserter(ItemInserter):
self._init_pos = None
self._item = None
self._aiming = True
event.accept()
def allowOutOfSceneEvents(self):
return True
def abort(self):
if self._helpLines is not None:
self._scene.removeItem(self._helpLines)
self._helpLines = None
if self._item is not None:
self._scene.removeItem(self._item)
self._item = None