mirror of https://github.com/m-labs/artiq.git
132 lines
4.5 KiB
Python
132 lines
4.5 KiB
Python
#############################################################################
|
|
##
|
|
## Copyright (C) 2013 Riverbank Computing Limited.
|
|
## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
|
|
## All rights reserved.
|
|
##
|
|
## This file is part of the examples of PyQt.
|
|
##
|
|
## $QT_BEGIN_LICENSE:BSD$
|
|
## You may use this file under the terms of the BSD license as follows:
|
|
##
|
|
## "Redistribution and use in source and binary forms, with or without
|
|
## modification, are permitted provided that the following conditions are
|
|
## met:
|
|
## * Redistributions of source code must retain the above copyright
|
|
## notice, this list of conditions and the following disclaimer.
|
|
## * Redistributions in binary form must reproduce the above copyright
|
|
## notice, this list of conditions and the following disclaimer in
|
|
## the documentation and/or other materials provided with the
|
|
## distribution.
|
|
## * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
|
|
## the names of its contributors may be used to endorse or promote
|
|
## products derived from this software without specific prior written
|
|
## permission.
|
|
##
|
|
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
## $QT_END_LICENSE$
|
|
##
|
|
#############################################################################
|
|
|
|
|
|
from PyQt5.QtCore import QPoint, QRect, QSize, Qt
|
|
from PyQt5.QtWidgets import (QApplication, QLayout, QPushButton, QSizePolicy,
|
|
QWidget)
|
|
|
|
|
|
class FlowLayout(QLayout):
|
|
def __init__(self, parent=None, margin=0, spacing=-1):
|
|
super(FlowLayout, self).__init__(parent)
|
|
|
|
if parent is not None:
|
|
self.setContentsMargins(margin, margin, margin, margin)
|
|
|
|
self.setSpacing(spacing)
|
|
|
|
self.itemList = []
|
|
|
|
def __del__(self):
|
|
item = self.takeAt(0)
|
|
while item:
|
|
item = self.takeAt(0)
|
|
|
|
def addItem(self, item):
|
|
self.itemList.append(item)
|
|
|
|
def count(self):
|
|
return len(self.itemList)
|
|
|
|
def itemAt(self, index):
|
|
if index >= 0 and index < len(self.itemList):
|
|
return self.itemList[index]
|
|
|
|
return None
|
|
|
|
def takeAt(self, index):
|
|
if index >= 0 and index < len(self.itemList):
|
|
return self.itemList.pop(index)
|
|
|
|
return None
|
|
|
|
def expandingDirections(self):
|
|
return Qt.Orientations(Qt.Orientation(0))
|
|
|
|
def hasHeightForWidth(self):
|
|
return True
|
|
|
|
def heightForWidth(self, width):
|
|
height = self.doLayout(QRect(0, 0, width, 0), True)
|
|
return height
|
|
|
|
def setGeometry(self, rect):
|
|
super(FlowLayout, self).setGeometry(rect)
|
|
self.doLayout(rect, False)
|
|
|
|
def sizeHint(self):
|
|
return self.minimumSize()
|
|
|
|
def minimumSize(self):
|
|
size = QSize()
|
|
|
|
for item in self.itemList:
|
|
size = size.expandedTo(item.minimumSize())
|
|
|
|
margin, _, _, _ = self.getContentsMargins()
|
|
|
|
size += QSize(2 * margin, 2 * margin)
|
|
return size
|
|
|
|
def doLayout(self, rect, testOnly):
|
|
x = rect.x()
|
|
y = rect.y()
|
|
lineHeight = 0
|
|
|
|
for item in self.itemList:
|
|
wid = item.widget()
|
|
spaceX = self.spacing() + wid.style().layoutSpacing(QSizePolicy.PushButton, QSizePolicy.PushButton, Qt.Horizontal)
|
|
spaceY = self.spacing() + wid.style().layoutSpacing(QSizePolicy.PushButton, QSizePolicy.PushButton, Qt.Vertical)
|
|
nextX = x + item.sizeHint().width() + spaceX
|
|
if nextX - spaceX > rect.right() and lineHeight > 0:
|
|
x = rect.x()
|
|
y = y + lineHeight + spaceY
|
|
nextX = x + item.sizeHint().width() + spaceX
|
|
lineHeight = 0
|
|
|
|
if not testOnly:
|
|
item.setGeometry(QRect(QPoint(x, y), item.sizeHint()))
|
|
|
|
x = nextX
|
|
lineHeight = max(lineHeight, item.sizeHint().height())
|
|
|
|
return y + lineHeight - rect.y()
|