本文整理汇总了Python中canvas.Canvas.pos方法的典型用法代码示例。如果您正苦于以下问题：Python Canvas.pos方法的具体用法？Python Canvas.pos怎么用？Python Canvas.pos使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类canvas.Canvas的用法示例。
在下文中一共展示了Canvas.pos方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: ScrollArea
# 需要导入模块: from canvas import Canvas [as 别名]
# 或者: from canvas.Canvas import pos [as 别名]
class ScrollArea(QtWidgets.QScrollArea):
"""
La clase ScrollArea es una derivada de la clase QScrollArea.
En este widget se pone, centrado, el lienzo del dibujo (Canvas).
Además, éste es el widget alrededor del cual se centra la MainWindow.
"""
def __init__(self, index, context, signals, Parent=None):
super(ScrollArea,self).__init__(Parent)
self.context = context
self.signals = signals
self.parent = Parent
self.canvas = Canvas(index, context, signals, self)
self.index = index
self.setBackgroundRole(QtGui.QPalette.Dark)
self.setObjectName("ScrollArea")
self.setWidget(self.canvas)
self.signals.zoom.connect(self.calcNewCanvasPosition)
self.signals.zoom.connect(self.calcNewScrollBarPosition)
self.signals.imageRemoved.connect(self.setNewIndex)
self.signals.newImage.connect(self.setNewImageZoom)
self.startZoom = 0
def resizeEvent(self, event):
super(ScrollArea, self).resizeEvent(event)
self.calcNewCanvasPosition()
self.calcNewScrollBarPosition()
if self.startZoom < 2:
self.startZoom += 1
self.setNewImageZoom()
# self.setNewImageZoom() # Zoom dinámico
def paintEvent(self, event):
super(ScrollArea, self).paintEvent(event)
self.calcNewCanvasPosition()
def calcNewCanvasPosition(self):
if self.context.imagePos == self.index:
g = self.frameGeometry()
w = g.width()
h = g.height()
if self.canvas.width() < w:
self.canvas.move( (w-self.context.getImagePos(self.index).image.width()*self.context.getImagePos(self.index).zoom)/2 , self.canvas.y() )
if self.canvas.height() < h:
self.canvas.move( self.canvas.x(), (h-self.context.getImagePos(self.index).image.height()*self.context.getImagePos(self.index).zoom)/2 )
def calcNewScrollBarPosition(self):
if self.context.imagePos == self.index:
self.horizontalScrollBar().setValue((self.horizontalScrollBar().maximum() - self.horizontalScrollBar().minimum()) / 2)
self.verticalScrollBar().setValue((self.verticalScrollBar().maximum() - self.verticalScrollBar().minimum()) / 2)
def setNewIndex(self, removedIndex):
if self.index >= removedIndex:
self.index -= 1
def setNewImageZoom(self):
print("setNewImageZoom")
g = self.frameGeometry()
w = g.width()
h = g.height()
self.context.images[-1].zoom = min(w/self.context.images[-1].image.width(), h/self.context.images[-1].image.height())
self.signals.zoom.emit()
def mousePressEvent(self, event):
if event.button() == Qt.MiddleButton:
self.grabPoint = event.pos()
self.grabPos = self.canvas.pos()
def mouseMoveEvent(self, event):
pos = event.pos()
self.canvas.move(self.grabPos + event.pos() - self.grabPoint)
"""
if (self.mapToParent(pos).x() + self.width() - self.grabPoint.x()) > (self.parent.width() ):
self.canvas.move(self.parent.width()-self.width(), self.y())
elif (self.mapToParent(pos).x() - self.grabPoint.x()) < 0:
self.canvas.move(0, self.y())
if (self.mapToParent(pos).y() + self.height() - self.grabPoint.y()) > (self.parent.height() ):
self.canvas.move(self.x(), self.parent.height()-self.height())
elif (self.mapToParent(pos).y() - self.grabPoint.y()) < 0:
self.canvas.move(self.x(), 0)
"""
#.........这里部分代码省略.........