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PyQt5_ Qscrollarea content is saved as a picture
2022-07-02 14:09:00 【Procedural ape and finance and technology】
This article provides two examples , A simple , A complex . Students with a poor foundation can watch the first , Single and clear function ; The second example is more complex , It is to draw multiple curves according to a theme , There are many other function points （ I mentioned in my previous blog ）, Students with weak foundation are easy to faint .
Catalog
effect ：
Example 1
Example 2
Code ：
Example 1
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
class ExampleWidget(QtWidgets.QWidget):
def __init__(self):
super().__init__()
self.temp_save = 0
self.temp_mark = 0
self.init_data()
self.init_ui()
self.fill_pic_widget()
def init_data(self):
self.pic_file_name_list = ['000', '001', '002', '003', '004', '005', '006', '007', '008', '009', '010', '011',
'012', '013', '014', '015', '016', '017']
pass
def init_ui(self):
self.setWindowTitle('QScrollArea Internally generated image storage ')
one_btn = QtWidgets.QPushButton(' Change the content ')
one_btn.clicked.connect(self.one_btn_clicked)
two_btn = QtWidgets.QPushButton('ScrollArea Internally generated image storage ')
two_btn.clicked.connect(self.two_btn_clicked)
self.pic_layout = QtWidgets.QGridLayout()
self.scroll_area = QtWidgets.QScrollArea()
# self.scroll_area.setWidgetResizable(True)
self.scroll_area.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
layout = QtWidgets.QVBoxLayout()
layout.addWidget(one_btn)
layout.addWidget(two_btn)
layout.addWidget(self.scroll_area)
self.setLayout(layout)
pass
def one_btn_clicked(self):
self.temp_mark = 1
self.fill_pic_widget()
pass
def two_btn_clicked(self):
self.temp_save += 1
path,_ = QtWidgets.QFileDialog.getSaveFileName(
self,
' Select the image storage path ',
f"pic_{self.temp_save}",
'JPG(*.jpg)'
)
if not path:
return
widget = self.scroll_area.widget()
pix = widget.grab()
pix.save(path)
pass
def fill_pic_widget(self):
''' Place pictures '''
# Clear control
while self.pic_layout.count():
item = self.pic_layout.takeAt(0)
widget = item.widget()
if widget is not None:
widget.deleteLater()
pass
pass
sc_child_widget = self.scroll_area.takeWidget()
if sc_child_widget is not None:
sc_child_widget.deleteLater()
pre_dir = r'D:/temp010/'
row_i = -2
if self.temp_mark == 1:
self.pic_file_name_list.reverse()
for pic_index, file_name in enumerate(self.pic_file_name_list):
one_check = QtWidgets.QCheckBox(file_name)
pixmap = QtGui.QPixmap(pre_dir + file_name + '.jpeg')
one_piclabel = QtWidgets.QLabel()
one_piclabel.setPixmap(pixmap)
one_piclabel.setScaledContents(True)
col_i = pic_index % 4
if col_i == 0:
row_i += 2
print(file_name, row_i, col_i)
self.pic_layout.addWidget(one_check, row_i, col_i, 1, 1)
self.pic_layout.addWidget(one_piclabel, row_i + 1, col_i, 1, 1)
pass
print('self.pic_layout,', self.pic_layout.count())
one_sc_child_widget = QtWidgets.QWidget()
one_sc_child_widget.setLayout(self.pic_layout)
self.scroll_area.setWidget(one_sc_child_widget)
pass
Example 2
import sys,math
import pandas as pd
from threading import Thread
from PyQt5 import QtCore,QtWidgets,QtGui
from PyQt5.QtCore import Qt
from typing import Any,Dict,List
import pyqtgraph as pg
pg.setConfigOption('background', 'w')
pg.setConfigOption('foreground', 'k')
class RotateAxisItem(pg.AxisItem):
def drawPicture(self, p, axisSpec, tickSpecs, textSpecs):
p.setRenderHint(p.Antialiasing,False)
p.setRenderHint(p.TextAntialiasing,True)
## draw long line along axis
pen,p1,p2 = axisSpec
p.setPen(pen)
p.drawLine(p1,p2)
p.translate(0.5,0) ## resolves some damn pixel ambiguity
## draw ticks
for pen,p1,p2 in tickSpecs:
p.setPen(pen)
p.drawLine(p1,p2)
## draw all text
# if self.tickFont is not None:
# p.setFont(self.tickFont)
p.setPen(self.pen())
for rect,flags,text in textSpecs:
# this is the important part
p.save()
p.translate(rect.x(),rect.y())
p.rotate(-30)
p.drawText(-rect.width(),rect.height(),rect.width(),rect.height(),flags,text)
# restoring the painter is *required*!!!
p.restore()
class RotateAxisItemOneYear(pg.AxisItem):
def drawPicture(self, p, axisSpec, tickSpecs, textSpecs):
p.setRenderHint(p.Antialiasing,False)
p.setRenderHint(p.TextAntialiasing,True)
## draw long line along axis
pen,p1,p2 = axisSpec
p.setPen(pen)
p.drawLine(p1,p2)
p.translate(0.5,-1) ## resolves some damn pixel ambiguity
# p.translate(1,0) ## resolves some damn pixel ambiguity
## draw ticks
for pen,p1,p2 in tickSpecs:
p.setPen(pen)
p.drawLine(p1,p2)
## draw all text
# if self.tickFont is not None:
# p.setFont(self.tickFont)
font = QtGui.QFont()
font.setPixelSize(9)
p.setFont(font)
p.setPen(self.pen())
for rect,flags,text in textSpecs:
# this is the important part
p.save()
p.translate(rect.x(),rect.y())
p.rotate(-30)
p.drawText(-rect.width()*0.6,rect.height(),rect.width(),rect.height(),flags,text)
# restoring the painter is *required*!!!
p.restore()RotateAxisItem: Custom abscissa
RotateAxisItemOneYear: Custom abscissa , comparison RotateAxisItem Compared with the small font size , In fact, these two can be merged into one , Let's explore by ourselves .
class PyQtGraphLineWidget(QtWidgets.QWidget):
def __init__(self):
super().__init__()
self.line_type: int = 1
self.fomc_p = None
self.temp_thread = None
self.init_data()
self.init_ui()
# self.register_event()
def init_data(self):
# Color value https://www.sioe.cn/yingyong/yanse-rgb-16/
self.color_one = (30,144,255)
self.color_two = (255,140,0)
self.p2 = None
self.legend2 = None
self.curve2 = None
pass
def init_ui(self):
self.title_label = QtWidgets.QLabel(' Broken line diagram ')
self.title_label.setAlignment(Qt.AlignCenter)
self.title_label.setStyleSheet('QLabel{font-size:18px;font-weight:bold;}')
xax = RotateAxisItem(orientation='bottom')
xax.setHeight(h=80)
self.pw = pg.PlotWidget(axisItems={'bottom': xax})
self.pw.setMouseEnabled(x=True,y=False)
# self.pw.enableAutoRange(x=False,y=True)
self.pw.setAutoVisible(x=False,y=True)
layout = QtWidgets.QVBoxLayout()
layout.addWidget(self.title_label)
layout.addWidget(self.pw)
self.setLayout(layout)
pass
def set_data(self, data: Dict[str, Any]):
''' Single root y Axis '''
self.line_type = 1
if data is None:
self.pw.clear()
return
if self.p2 is not None:
'''
If the previous display was double y Axis ,
【 For the time being self.pw It's called the main view ,self.p2 It's called the right side view 】
1. To hide the coordinate axis on the right side of the main view
2. Disconnect the signal following the change on the right side of the main view
3. The right side view will be (ViewBox) Delete
4. The right side view will be (ViewBox) Empty
5. Leave the right view empty
'''
self.pw.hideAxis('right')
self.vb.sigResized.disconnect(self.updateViews)
self.pw.scene().removeItem(self.p2)
self.p2.clear()
self.legend2.clear()
self.curve2.clear()
self.vb.clear()
self.p2 = None
self.legend2 = None
self.curve2 = None
# Empty the last view
self.pw.clear()
self.pw.addLegend()
title_str = data['title_str']
self.title_label.setText(title_str)
xTick = [data['xTick00']]
x = data['x']
y = data['y']
y_name = data['y_name']
self.pw.setLabel('left', y_name)
self.y_datas = y
self.x_data = xTick
self.x_Tick = data['xTick']
self.y_name = y_name
xax = self.pw.getAxis('bottom')
xax.setTicks(xTick)
self.pw.plot(x, y, connect='finite', pen=pg.mkPen({'color': self.color_one, 'width': 4}), name=self.y_name)
self.vLine = pg.InfiniteLine(angle=90, movable=False)
self.hLine = pg.InfiniteLine(angle=0, movable=False)
self.label = pg.TextItem()
self.pw.addItem(self.vLine, ignoreBounds=True)
self.pw.addItem(self.hLine, ignoreBounds=True)
self.pw.addItem(self.label, ignoreBounds=True)
self.vb = self.pw.getViewBox()
self.proxy = pg.SignalProxy(self.pw.scene().sigMouseMoved, rateLimit=60, slot=self.mouseMoved)
# Display the whole line chart
self.pw.enableAutoRange()
pass
def set_data_2y(self, data: Dict[str, Any]):
''' double y Axis '''
self.line_type = 2
if data is None:
self.pw.clear()
return
if self.p2 is not None:
self.pw.hideAxis('right')
self.vb.sigResized.disconnect(self.updateViews)
self.pw.scene().removeItem(self.p2)
self.p2.clear()
self.legend2.clear()
self.curve2.clear()
self.vb.clear()
self.p2 = None
self.legend2 = None
self.curve2 = None
if self.fomc_p:
self.pw.scene().removeItem(self.fomc_p)
self.pw.clear()
self.pw.addLegend()
title_str = data['title_str']
self.title_label.setText(title_str)
xTick = [data['xTick00']]
x = data['x']
y = data['y']
y_name = data['y_name']
self.pw.setLabel('left', y_name)
self.y_datas = y
self.x_data = xTick
self.x_Tick = data['xTick']
self.y_name = y_name
xax = self.pw.getAxis('bottom')
xax.setTicks(xTick)
self.pw.plot(x, y, connect='finite', pen=pg.mkPen({'color': self.color_one, 'width': 4}), name=self.y_name)
self.vLine = pg.InfiniteLine(angle=90, movable=False)
self.hLine = pg.InfiniteLine(angle=0, movable=False)
self.label = pg.TextItem()
self.pw.addItem(self.vLine, ignoreBounds=True)
self.pw.addItem(self.hLine, ignoreBounds=True)
self.pw.addItem(self.label, ignoreBounds=True)
# The second one y Axis start
y2 = data['y2']
y_name2 = data['y_name2']
self.y_datas2 = y2
self.pw.setLabel('right', y_name2)
self.p2 = pg.ViewBox()
self.p2.setMouseEnabled(x=True, y=False)
self.p2.setAutoVisible(x=False, y=True)
self.pw.scene().addItem(self.p2)
self.pw.getAxis('right').linkToView(self.p2)
self.p2.setXLink(self.pw)
self.curve2 = pg.PlotCurveItem(x=x,y=y2, pen=pg.mkPen({'color': self.color_two, 'width': 4}), connect='finite')
self.p2.addItem(self.curve2)
self.legend2 = pg.LegendItem(offset=(0., 1.))
self.legend2.setParentItem(self.p2)
power = pg.PlotDataItem(antialias=True, pen=pg.mkPen({'color': self.color_two, 'width': 4}))
self.legend2.addItem(power, y_name2)
# The second one y Axis end
self.vb = self.pw.getViewBox()
self.updateViews()
self.vb.sigResized.connect(self.updateViews)
self.proxy = pg.SignalProxy(self.pw.scene().sigMouseMoved, rateLimit=60, slot=self.mouseMoved)
self.pw.enableAutoRange()
pass
def updateViews(self):
if self.p2:
self.p2.setGeometry(self.pw.getViewBox().sceneBoundingRect())
self.p2.linkedViewChanged(self.pw.getViewBox(), self.p2.XAxis)
if self.fomc_p:
self.fomc_p.setGeometry(self.pw.getViewBox().sceneBoundingRect())
self.fomc_p.linkedViewChanged(self.pw.getViewBox(), self.fomc_p.XAxis)
pass
def mouseMoved(self,evt):
pos = evt[0]
if self.pw.sceneBoundingRect().contains(pos):
mousePoint = self.vb.mapSceneToView(pos)
index = int(mousePoint.x())
if index >= 0 and index < len(self.y_datas):
x_str = self.x_Tick[index][1]
y_str_html = ''
if self.line_type == 2:
y_str2 = str(self.y_datas2[index])
y_str_html += ' '+y_str2
y_str = str(self.y_datas[index])
y_str_html += ' ' + y_str
html_str = '<p style="color:black;font-size:18px;font-weight:bold;"> ' + x_str +' '+y_str_html+ '</p>'
self.label.setHtml(html_str)
self.label.setPos(mousePoint.x(), mousePoint.y())
self.vLine.setPos(mousePoint.x())
self.hLine.setPos(mousePoint.y())
pass
class PyQtGraphLineOneYearWidget(QtWidgets.QWidget):
def __init__(self):
super().__init__()
self.line_type: int = 1
self.fomc_p = None
self.temp_thread = None
self.init_data()
self.init_ui()
# self.register_event()
def init_data(self):
# Color value https://www.sioe.cn/yingyong/yanse-rgb-16/
self.color_one = (30,144,255)
self.color_two = (255,140,0)
self.p2 = None
self.legend2 = None
self.curve2 = None
pass
def init_ui(self):
self.title_label = QtWidgets.QLabel(' Broken line diagram ')
self.title_label.setAlignment(Qt.AlignCenter)
self.title_label.setStyleSheet('QLabel{font-size:18px;font-weight:bold;}')
xax = RotateAxisItemOneYear(orientation='bottom')
xax.setHeight(h=50)
self.pw = pg.PlotWidget(axisItems={'bottom': xax})
self.pw.setMouseEnabled(x=True,y=False)
# self.pw.enableAutoRange(x=False,y=True)
self.pw.setAutoVisible(x=False,y=True)
layout = QtWidgets.QVBoxLayout()
layout.addWidget(self.title_label)
layout.addWidget(self.pw)
self.setLayout(layout)
pass
def set_data(self, data: Dict[str, Any]):
''' Single root y Axis '''
self.line_type = 1
if data is None:
self.pw.clear()
return
if self.p2 is not None:
'''
If the previous display was double y Axis ,
【 For the time being self.pw It's called the main view ,self.p2 It's called the right side view 】
1. To hide the coordinate axis on the right side of the main view
2. Disconnect the signal following the change on the right side of the main view
3. The right side view will be (ViewBox) Delete
4. The right side view will be (ViewBox) Empty
5. Leave the right view empty
'''
self.pw.hideAxis('right')
self.vb.sigResized.disconnect(self.updateViews)
self.pw.scene().removeItem(self.p2)
self.p2.clear()
self.legend2.clear()
self.curve2.clear()
self.vb.clear()
self.p2 = None
self.legend2 = None
self.curve2 = None
# Empty the last view
self.pw.clear()
self.pw.addLegend()
title_str = data['title_str']
self.title_label.setText(title_str)
xTick = [data['xTick00']]
x = data['x']
y = data['y']
y_name = data['y_name']
self.pw.setLabel('left', y_name)
self.y_datas = y
self.x_data = xTick
self.x_Tick = data['xTick']
self.y_name = y_name
xax = self.pw.getAxis('bottom')
xax.setTicks(xTick)
self.pw.plot(x, y, connect='finite', pen=pg.mkPen({'color': self.color_one, 'width': 4}), name=self.y_name)
self.vLine = pg.InfiniteLine(angle=90, movable=False)
self.hLine = pg.InfiniteLine(angle=0, movable=False)
self.label = pg.TextItem()
self.pw.addItem(self.vLine, ignoreBounds=True)
self.pw.addItem(self.hLine, ignoreBounds=True)
self.pw.addItem(self.label, ignoreBounds=True)
self.vb = self.pw.getViewBox()
self.proxy = pg.SignalProxy(self.pw.scene().sigMouseMoved, rateLimit=60, slot=self.mouseMoved)
# Display the whole line chart
self.pw.enableAutoRange()
pass
def set_data_2y(self, data: Dict[str, Any]):
''' double y Axis '''
self.line_type = 2
if data is None:
self.pw.clear()
return
if self.p2 is not None:
self.pw.hideAxis('right')
self.vb.sigResized.disconnect(self.updateViews)
self.pw.scene().removeItem(self.p2)
self.p2.clear()
self.legend2.clear()
self.curve2.clear()
self.vb.clear()
self.p2 = None
self.legend2 = None
self.curve2 = None
if self.fomc_p:
self.pw.scene().removeItem(self.fomc_p)
self.pw.clear()
self.pw.addLegend()
title_str = data['title_str']
self.title_label.setText(title_str)
xTick = [data['xTick00']]
x = data['x']
y = data['y']
y_name = data['y_name']
self.pw.setLabel('left', y_name)
self.y_datas = y
self.x_data = xTick
self.x_Tick = data['xTick']
self.y_name = y_name
xax = self.pw.getAxis('bottom')
xax.setTicks(xTick)
self.pw.plot(x, y, connect='finite', pen=pg.mkPen({'color': self.color_one, 'width': 4}), name=self.y_name)
self.vLine = pg.InfiniteLine(angle=90, movable=False)
self.hLine = pg.InfiniteLine(angle=0, movable=False)
self.label = pg.TextItem()
self.pw.addItem(self.vLine, ignoreBounds=True)
self.pw.addItem(self.hLine, ignoreBounds=True)
self.pw.addItem(self.label, ignoreBounds=True)
# The second one y Axis start
y2 = data['y2']
y_name2 = data['y_name2']
self.y_datas2 = y2
self.pw.setLabel('right', y_name2)
self.p2 = pg.ViewBox()
self.p2.setMouseEnabled(x=True, y=False)
self.p2.setAutoVisible(x=False, y=True)
self.pw.scene().addItem(self.p2)
self.pw.getAxis('right').linkToView(self.p2)
self.p2.setXLink(self.pw)
self.curve2 = pg.PlotCurveItem(x=x,y=y2, pen=pg.mkPen({'color': self.color_two, 'width': 4}), connect='finite')
self.p2.addItem(self.curve2)
self.legend2 = pg.LegendItem(offset=(0., 1.))
self.legend2.setParentItem(self.p2)
power = pg.PlotDataItem(antialias=True, pen=pg.mkPen({'color': self.color_two, 'width': 4}))
self.legend2.addItem(power, y_name2)
# The second one y Axis end
self.vb = self.pw.getViewBox()
self.updateViews()
self.vb.sigResized.connect(self.updateViews)
self.proxy = pg.SignalProxy(self.pw.scene().sigMouseMoved, rateLimit=60, slot=self.mouseMoved)
self.pw.enableAutoRange()
pass
def updateViews(self):
if self.p2:
self.p2.setGeometry(self.pw.getViewBox().sceneBoundingRect())
self.p2.linkedViewChanged(self.pw.getViewBox(), self.p2.XAxis)
if self.fomc_p:
self.fomc_p.setGeometry(self.pw.getViewBox().sceneBoundingRect())
self.fomc_p.linkedViewChanged(self.pw.getViewBox(), self.fomc_p.XAxis)
pass
def mouseMoved(self,evt):
pos = evt[0]
if self.pw.sceneBoundingRect().contains(pos):
mousePoint = self.vb.mapSceneToView(pos)
index = int(mousePoint.x())
if index >= 0 and index < len(self.y_datas):
x_str = self.x_Tick[index][1]
y_str_html = ''
if self.line_type == 2:
y_str2 = str(self.y_datas2[index])
y_str_html += ' '+y_str2
y_str = str(self.y_datas[index])
y_str_html += ' ' + y_str
html_str = '<p style="color:black;font-size:18px;font-weight:bold;"> ' + x_str +' '+y_str_html+ '</p>'
self.label.setHtml(html_str)
self.label.setPos(mousePoint.x(), mousePoint.y())
self.vLine.setPos(mousePoint.x())
self.hLine.setPos(mousePoint.y())
pass
PyQtGraphLineWidget and PyQtGraphLineOneYearWidget It can also be merged into one , I'm just lazy , If you are interested, you can explore by yourself , These two controls are used to display polylines
class ChildLineWidget(QtWidgets.QWidget):
def __init__(self):
super().__init__()
self.init_data()
self.init_ui()
pass
def init_data(self):
pass
def init_ui(self):
self.setMinimumHeight(600)
self.left_line_widget = PyQtGraphLineWidget()
self.righttop_line_widget = PyQtGraphLineOneYearWidget()
self.rightdown_table_widget = QtWidgets.QTableWidget()
layout_right = QtWidgets.QVBoxLayout()
layout_right.addWidget(self.righttop_line_widget,1)
layout_right.addWidget(self.rightdown_table_widget,1)
layout = QtWidgets.QHBoxLayout()
layout.addWidget(self.left_line_widget,3)
layout.addLayout(layout_right,1)
self.setLayout(layout)
pass
def set_data(self,data:Dict[str,Any]):
line_data = data['line_data']
table_data = data['table_data']
self.setting_line_data(line_data)
self.setting_table_data(table_data)
pass
def setting_line_data(self,data:Dict[str,Any]):
line_type = data['line_type']
whole_line = data['whole_line']
one_year_line = data['one_year_line']
if line_type == 2:
self.left_line_widget.set_data_2y(whole_line)
self.righttop_line_widget.set_data_2y(one_year_line)
else:
self.left_line_widget.set_data(whole_line)
self.righttop_line_widget.set_data(one_year_line)
pass
def setting_table_data(self,data:Dict[str,Any]):
table_header = data['table_header']
table_body = data['table_body']
self.rightdown_table_widget.clearContents()
self.rightdown_table_widget.setColumnCount(len(table_header))
self.rightdown_table_widget.setHorizontalHeaderLabels(table_header)
self.rightdown_table_widget.setRowCount(len(table_body))
for r_i,r_v in enumerate(table_body):
for c_i,c_v in enumerate(r_v):
cell = QtWidgets.QTableWidgetItem(str(c_v))
self.rightdown_table_widget.setItem(r_i,c_i,cell)
pass
self.rightdown_table_widget.resizeColumnsToContents()
pass
pass
ChildLineWidget: A complete display control of data in the scroll area , Full data line chart showing data , Recent data discount chart and latest 50 A data list
class MultiChildLineWidget(QtWidgets.QWidget):
def __init__(self):
super().__init__()
self.init_data()
self.init_ui()
pass
def init_data(self):
self.title_str: str = ' topic name '
self.child_line_data_list: List[Any] = []
pass
def init_ui(self):
self.layout_child = QtWidgets.QVBoxLayout()
self.scroll_area = QtWidgets.QScrollArea()
self.scroll_area.setWidgetResizable(True)
self.scroll_area.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
layout = QtWidgets.QVBoxLayout()
layout.addWidget(self.scroll_area)
self.setLayout(layout)
pass
def set_data(self,data:Dict[str,Any]):
title_str = data['title']
self.child_line_data_list = data['line_data_list']
self.title_str = title_str
self.fill_child_line_widget()
pass
def fill_child_line_widget(self):
# Clear control
while self.layout_child.count():
item = self.layout_child.takeAt(0)
widget = item.widget()
if widget is not None:
widget.deleteLater()
pass
pass
sc_child_widget = self.scroll_area.takeWidget()
if sc_child_widget is not None:
sc_child_widget.deleteLater()
title_label = QtWidgets.QLabel(self.title_str)
title_label.setAlignment(Qt.AlignCenter)
title_label.setStyleSheet('QLabel{font-size:26px;font-weight:bold;color:blue}')
self.layout_child.addWidget(title_label)
self.layout_child.addSpacing(10)
for one_item in self.child_line_data_list:
one_widget = ChildLineWidget()
one_widget.set_data(one_item)
self.layout_child.addWidget(one_widget)
self.layout_child.addSpacing(10)
pass
one_sc_child_widget = QtWidgets.QWidget()
one_sc_child_widget.setLayout(self.layout_child)
self.scroll_area.setWidget(one_sc_child_widget)
pass
def res_scroll_widget(self):
return self.scroll_area.widget()
passMultiChildLineWidget: Place multiple minimum data unit controls ChildLineWidget The container of
class ExampleScrollLineWidget(QtWidgets.QWidget):
close_signal = QtCore.pyqtSignal(str)
signal_themeline = QtCore.pyqtSignal(object)
def __init__(self):
super().__init__()
self.caculate_thread = None
self.init_data()
self.init_ui()
self.register_event()
pass
def init_data(self):
self.pre_catalog_list:List[Any] = []
self.pre_data_list:List[Any] = []
self.pic_count:int = 0
self.catalog_code_list: List[str] = ['economic_usanationdebt10y','economic_goldspotprice','economic_medianpehs300','economic_pigprice','economic_usdebt10sub1','economic_chinadebt10sub1']
self.period_year_map: Dict[str,int] = {
' Daily data ':252,
' Weekly data ':52,
' Monthly data ':12,
' Quarterly data ':8,
' Annual data ':5
}
self.table_count: int = 50
self.x_count: int = 20
pass
def init_ui(self):
self.caculate_progress = QtWidgets.QProgressBar()
self.caculate_status_label = QtWidgets.QLabel()
layout_progress = QtWidgets.QHBoxLayout()
layout_progress.addWidget(self.caculate_progress)
layout_progress.addWidget(self.caculate_status_label)
choise_btn = QtWidgets.QPushButton(' Select data ')
choise_btn.clicked.connect(self.choise_btn_clicked)
create_pic_btn = QtWidgets.QPushButton(' Generate pictures ')
create_pic_btn.clicked.connect(self.create_pic_btn_clicked)
tip_label = QtWidgets.QLabel(' topic name ')
self.theme_lineedit = QtWidgets.QLineEdit()
layout_btn = QtWidgets.QHBoxLayout()
layout_btn.addWidget(choise_btn)
layout_btn.addWidget(create_pic_btn)
layout_input = QtWidgets.QHBoxLayout()
layout_input.addWidget(tip_label)
layout_input.addWidget(self.theme_lineedit)
self.muliti_widget = MultiChildLineWidget()
layout = QtWidgets.QVBoxLayout()
layout.addLayout(layout_progress)
layout.addLayout(layout_btn)
layout.addLayout(layout_input)
layout.addWidget(self.muliti_widget)
self.setLayout(layout)
pass
def register_event(self):
self.signal_themeline.connect(self.process_themeline_event)
pass
def process_themeline_event(self,data:Dict[str,Any])->None:
change_type = data['change_type']
if change_type == 'caculate_result':
res_data = data['data']
title_str = self.theme_lineedit.text()
print(title_str)
title_str = title_str.strip()
if len(title_str)<=0:
title_str = ' The theme '
pre_show_data = {
'title':title_str,
'line_data_list':res_data
}
self.muliti_widget.set_data(pre_show_data)
self.progress_finished()
self.caculate_thread = None
pass
def setting_data(self,data:Dict[str,Any]):
self.pre_catalog_list = data['catalog']
self.pre_data_list = data['data']
pass
def choise_btn_clicked(self):
''' Select the data button and click '''
self.start_caculate_thread('caculate',None)
pass
def create_pic_btn_clicked(self):
''' Click the generate picture button '''
self.pic_count += 1
path, _ = QtWidgets.QFileDialog.getSaveFileName(
self,
' Select the image storage path ',
f"pic_{self.pic_count}",
'JPG(*.jpg)'
)
if not path:
return
widget = self.muliti_widget.res_scroll_widget()
pix = widget.grab()
pix.save(path)
pass
def init_caculate_thread(self):
self.progress_init()
# self.start_caculate_thread('init', None)
pass
def start_caculate_thread(self, mark_str: str, data: Dict[str, Any]):
if self.caculate_thread:
QtWidgets.QMessageBox.information(
self,
' Tips ',
' There are tasks being performed ',
QtWidgets.QMessageBox.Yes
)
return
self.caculate_thread = Thread(
target=self.running_caculate_thread,
args=(
mark_str,
data,
)
)
self.caculate_thread.start()
self.progress_busy()
pass
def running_caculate_thread(self, mark_str: str, data: Dict[str, Any]):
if mark_str == 'caculate':
catalog_list = self.pre_catalog_list
data_list = self.pre_data_list
# Start processing data
catalog_map = {}
for item in catalog_list:
catalog_code = item['economic_code']
level = item['level']
if level == 2:
catalog_name = f"{item['economic_name']}【{item['economic_source']}】"
else:
catalog_name = item['economic_name']
catalog_lineshow = item['economic_lineshow']
if catalog_lineshow.get('y2') is not None:
line_type = 2
else:
line_type = 1
catalog_period = item['economic_period']
if self.period_year_map.get(catalog_period) is None:
last_one_year_count = 10
else:
last_one_year_count = self.period_year_map[catalog_period]
catalog_map[catalog_code] = {
'catalog_name':catalog_name,
'catalog_lineshow':catalog_lineshow,
'line_type':line_type,
'catalog_period':catalog_period,
'last_one_year_count':last_one_year_count
}
res_show_list = []
for item in data_list:
catalog_code = item['catalog_code']
catalog_obj = catalog_map[catalog_code]
last_one_year_count = catalog_obj['last_one_year_count']
catalog_name = catalog_obj['catalog_name']
catalog_lineshow = catalog_obj['catalog_lineshow']
line_type = catalog_obj['line_type']
column_list = item['column_list']
pd_column_list = item['pd_column_list']
item_data_list = item['data_list']
df = pd.DataFrame(columns=pd_column_list,data=item_data_list)
df_one_year = df.iloc[-1*last_one_year_count:, :].copy()
df_table = df.iloc[-1*self.table_count:,:].copy()
if line_type == 2:
# double Y Axis
whole_line_data = self.res_twoY_line_data(df,catalog_lineshow)
one_year_line_data = self.res_twoY_line_data(df_one_year,catalog_lineshow)
pass
else:
# A curve
whole_line_data = self.res_one_line_data(df,catalog_lineshow)
one_year_line_data = self.res_one_line_data(df_one_year,catalog_lineshow)
pass
whole_line_data['title_str'] = catalog_name
one_year_line_data['title_str'] = f"{catalog_name}( In the near future )"
one_line = {
'line_type':line_type,
'whole_line':whole_line_data,
'one_year_line':one_year_line_data
}
# Tabular data
one_table = {
'table_header':column_list,
'table_body':df_table.values.tolist()
}
res_show_list.append({
'line_data':one_line,
'table_data':one_table
})
pass
res_json = {}
res_json['change_type'] = 'caculate_result'
res_json['data'] = res_show_list
self.signal_themeline.emit(res_json)
pass
pass
def res_one_line_data(self,df:pd.DataFrame,catalog_lineshow:Dict[str,Any])->Dict[str,Any]:
whole_line_data = {}
df['count'] = range(len(df))
df[catalog_lineshow['y1']] = df[catalog_lineshow['y1']].astype('float')
x = df['count'].values.tolist()
y = df[catalog_lineshow['y1']].values.tolist()
xnames = df[catalog_lineshow['x']].values.tolist()
xTicks = [(one_i, two_i) for one_i, two_i in zip(x, xnames)]
xTicks00 = []
if len(xTicks) > self.x_count:
dur_count = math.floor(len(xTicks) / self.x_count)
for i in range(0, len(xTicks), dur_count):
xTicks00.append(xTicks[i])
else:
xTicks00 = xTicks
y_name = catalog_lineshow['ylabel']
whole_line_data['x'] = x
whole_line_data['y'] = y
whole_line_data['xTick00'] = xTicks00
whole_line_data['y_name'] = y_name
whole_line_data['xTick'] = xTicks
return whole_line_data
def res_twoY_line_data(self, df: pd.DataFrame, catalog_lineshow: Dict[str, Any]) -> Dict[str, Any]:
whole_line_data = {}
df['count'] = range(len(df))
df[catalog_lineshow['y1']] = df[catalog_lineshow['y1']].astype('float')
df[catalog_lineshow['y2']] = df[catalog_lineshow['y2']].astype('float')
x = df['count'].values.tolist()
y = df[catalog_lineshow['y1']].values.tolist()
y2 = df[catalog_lineshow['y2']].values.tolist()
xnames = df[catalog_lineshow['x']].values.tolist()
xTicks = [(one_i, two_i) for one_i, two_i in zip(x, xnames)]
xTicks00 = []
if len(xTicks) > self.x_count:
dur_count = math.floor(len(xTicks) / self.x_count)
for i in range(0, len(xTicks), dur_count):
xTicks00.append(xTicks[i])
else:
xTicks00 = xTicks
y_name = catalog_lineshow['ylabel']
y_name2 = catalog_lineshow['ylabel2']
whole_line_data['x'] = x
whole_line_data['y'] = y
whole_line_data['y2'] = y2
whole_line_data['xTick00'] = xTicks00
whole_line_data['y_name'] = y_name
whole_line_data['y_name2'] = y_name2
whole_line_data['xTick'] = xTicks
return whole_line_data
def progress_init(self)->None:
self.caculate_progress.setValue(0)
self.caculate_status_label.setText(' No task ')
def progress_busy(self)->None:
self.caculate_progress.setRange(0,0)
self.caculate_status_label.setText(' Being implemented ')
def progress_finished(self)->None:
self.caculate_progress.setRange(0,100)
self.caculate_progress.setValue(100)
self.caculate_status_label.setText(' completion of enforcement ')
def closeEvent(self, QCloseEvent):
# self.close_signal.emit('ThemeLineWidget')
self.close()
pass
passUse
Example 1
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
t_win = ExampleWidget()
t_win.showMaximized()
sys.exit(app.exec_())
pass
Click on “ScrollArea Content generation image storage ” Button
Select the directory to store , Click save , You can see the corresponding pictures in the corresponding directory
Example 2
if __name__ == '__main__':
QtCore.QCoreApplication.setAttribute(QtCore.Qt.HighDpiScaleFactorRoundingPolicy.PassThrough)
app = QtWidgets.QApplication(sys.argv)
import json
pre_dir = r'D:/temp006/'
with open(pre_dir+'catalog_list.json','r',encoding='utf-8') as fr:
catalog_list = json.load(fr)
with open(pre_dir+'data_list.json','r',encoding='utf-8') as fr:
data_list = json.load(fr)
pre_data = {
'catalog':catalog_list,
'data':data_list
}
t_win = ExampleScrollLineWidget()
t_win.showMaximized()
t_win.setting_data(pre_data)
sys.exit(app.exec_())
pass
Click on “ Generate pictures ” Button
Select the directory to save , single click “ preservation ”, You can see pictures in the corresponding directory
data
The data used in this article ：
link ：https://pan.baidu.com/s/1NumTfqscqDAXLN0V_pHNRw
Extraction code ：b5oh
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