mri_lab_8_sd.py

mri_lab_8_sd.py

class MRI_SD_Widget(QDialog):

    def __init__(self,parent=None): #设定UI界面，包括按钮、菜单

[MRI Lab]-[Pulse Design]

#menu
       self.createGradMenu() #已完成的部分
       self.createPulseMenu()
       self.createLoopMenu()
       '''
       self.createAmplMenu() #未完成的部分
       self.createAttenMenu()
       self.createGateMenu()
       self.createPhModMenu()
       '''

以PulseMenu为例，对照可了解弹出菜单的做法（设置每一帧的属性）

def createPulseMenu(self):
       self.setContextMenuPolicy(Qt.CustomContextMenu)
       self.PulseMenu=QMenu(self)
       self.Pulseaction90=self.PulseMenu.addAction(self.pulse90Icon,u'| 90 Pulse')
       self.Pulseaction180X=self.PulseMenu.addAction(self.pulse180Icon,u'|180X+ Pulse')
       self.Pulseaction180Xminus=self.PulseMenu.addAction(self.pulse180Icon,u'|180X- Pulse')
       self.Pulseaction180Y=self.PulseMenu.addAction(self.pulse180Icon,u'|180Y+ Pulse')
       self.Pulseaction180Yminus=self.PulseMenu.addAction(self.pulse180Icon,u'|180Y- Pulse')
       self.PulseactionDesign=self.PulseMenu.addAction(u'|Design Pulse')
       self.PulseactionZero=self.PulseMenu.addAction(self.zeroIcon,u'|     zero')
       self.PulseactionShow=self.PulseMenu.addAction(u'|      show')
       self.Pulseaction90.triggered.connect(self.Pulseaction90Handler)
       self.Pulseaction180X.triggered.connect(self.Pulseaction180XHandler)
       self.Pulseaction180Xminus.triggered.connect(self.Pulseaction180XminusHandler)
       self.Pulseaction180Y.triggered.connect(self.Pulseaction180YHandler)
       self.Pulseaction180Yminus.triggered.connect(self.Pulseaction180YminusHandler)
       self.PulseactionDesign.triggered.connect(self.PulseactionDesignHandler)
       self.PulseactionZero.triggered.connect(self.PulseactionZeroHandler)
       self.PulseactionShow.triggered.connect(self.PulseactionShowHandler)

def tableWidget_set(self): #设置绘图区域的尺寸，包括：

self.headerVertical=["Time Delay /us",
                            "Pulse Sequence",
                       "Gradient X",
                       "Gradient Y",
                       "Gradient Z",
                       "Loop structure"]
#以及不同属性的显示（png格式图片）

默认参数从data.txt载入，导入self.flag[][]数组中：以前4列的数据为例

#open file
        fileObject=open('Pulse_design/data.txt','r')

15
6
100
100
500 //row 1
0
0
0
0
0
81
120 //row 2
0 //pulse sequence
0 //gradient X
0 //gradient Y
+Amplitude:0.01 Increase duration:1 Holding duration:119 Decrease duration:0 The END //gradient Z
0
87
120 //row 3
pulse90
0
0
+Amplitude:0.01 Increase duration:0 Holding duration:119 Decrease duration:1 The END
0
107
120 //row 4
0
+Amplitude:0.01 Increase duration:1 Holding duration:119 Decrease duration:0 The END
+Amplitude:0.01 Increase duration:1 Holding duration:119 Decrease duration:0 The END
-Amplitude:0.01 Increase duration:1 Holding duration:118 Decrease duration:1 The END
0
310

self.flags[k][i]=fileObject.readline().rstrip('\n')

具体写入如下：

for i in range(self.CountColumn):
            for k in range(1,self.CountRow): #对于gradient的3行
                self.labels[k][i].setMinimumSize(3,3)
                self.labels[k][i].setScaledContents(True)
                self.tableWidget.setItem(k,i,QTableWidgetItem(" "))
                if self.flags[k][i][0]=='0':
                    self.labels[k][i].setPixmap(self.zeroScaled) 
                    #推测这个函数的功能是以点阵格式载入png文件（1152*648）到这个单元
                elif self.flags[k][i][0]=='+':
                    self.labels[k][i].setPixmap(self.highScaled)
                elif self.flags[k][i][0]=='-':
                    self.labels[k][i].setPixmap(self.lowScaled)
                elif self.flags[k][i][0]=='?' or self.flags[k][i][0:6]=="Spiral":
                    self.labels[k][i].setPixmap(self.funcScaled)
                elif self.flags[k][i]=="pulse90":
                    self.labels[k][i].setPixmap(self.pulse90Scaled)
                    self.tableWidget.setItem(k,i,QTableWidgetItem("90°"))
                    self.tableWidget.item(k,i).setTextAlignment(QtCore.Qt.AlignCenter)
                elif self.flags[k][i]=="pulse180X+":
                    self.labels[k][i].setPixmap(self.pulse180Scaled)
                    self.tableWidget.setItem(k,i,QTableWidgetItem("180°X+"))
                    self.tableWidget.item(k,i).setTextAlignment(QtCore.Qt.AlignCenter)
                elif self.flags[k][i]=="pulse180X-":
                    self.labels[k][i].setPixmap(self.pulse180Scaled)
                    self.tableWidget.setItem(k,i,QTableWidgetItem("180°X-"))
                    self.tableWidget.item(k,i).setTextAlignment(QtCore.Qt.AlignCenter)
                elif self.flags[k][i]=="pulse180Y+":
                    self.labels[k][i].setPixmap(self.pulse180Scaled)
                    self.tableWidget.setItem(k,i,QTableWidgetItem("180°Y+"))
                    self.tableWidget.item(k,i).setTextAlignment(QtCore.Qt.AlignCenter)
                elif self.flags[k][i]=="pulse180Y-":
                    self.labels[k][i].setPixmap(self.pulse180Scaled)
                    self.tableWidget.setItem(k,i,QTableWidgetItem("180°Y-"))
                    self.tableWidget.item(k,i).setTextAlignment(QtCore.Qt.AlignCenter)
                elif self.flags[k][i][0:9]=="loopStart":
                    self.labels[k][i].setPixmap(self.loopStartScaled)
                    self.tableWidget.setItem(k,i,QTableWidgetItem(self.flags[k][i][9:]))
                    self.LoopTime=self.flags[k][i][9:]
                    self.tableWidget.item(k,i).setTextAlignment(QtCore.Qt.AlignCenter)
                elif self.flags[k][i]=="loopEnd":
                    self.labels[k][i].setPixmap(self.loopEndScaled)
                    self.tableWidget.item(k,i).setTextAlignment(QtCore.Qt.AlignCenter)
                else:
                    self.labels[k][i].setPixmap(self.funcScaled)

问题：函数QPixmap等未定义？是没做完还是在别的文件里调用了库？

设置右侧3个按钮的功能，以[Add Column]为例：

 def AddColumnBtnClicked(self):
        self.CountColumn+=1
        y=self.CountColumn-1 #原列数
        self.tableWidget.setColumnCount(self.CountColumn)
        self.tableWidget.setColumnWidth(y,self.ColumnWidth)
        self.tableWidget.setItem(0,y,QTableWidgetItem("5"))
        self.tableWidget.item(0,y).setTextAlignment(QtCore.Qt.AlignCenter)
        for i in range(1,self.CountRow):
            self.labels[i][y].setPixmap(self.zeroScaled)
            self.flags[i][y]="0"
            self.tableWidget.setCellWidget(i,y,self.labels[i][y])
            self.labels[i][y].setScaledContents(True)

再以[save]为例：

 def SaveBtnClicked(self):
        fileObject=open('Pulse_design/data.txt','w')#写入之前那个文件，貌似不能新建
        fileObject.write(str(self.CountColumn))
        fileObject.write('\n')
        fileObject.write(str(self.CountRow))
        fileObject.write('\n')
        fileObject.write(str(self.rangeMax))
        fileObject.write('\n')
        for i in range(self.CountColumn):
            fileObject.write(str(self.tableWidget.columnWidth(i)))
            fileObject.write('\n')
            fileObject.write(self.tableWidget.item(0,i).text())
            fileObject.write('\n')
            for k in range(1,self.CountRow):
                fileObject.write(self.flags[k][i])
                fileObject.write('\n')
        fileObject.close()

而[create]是重头戏，创建学生使用的序列，以汇编语言写入txt文件：

def CreateBtnClicked(self):
        #create time and xyz program
        fileObject=open('sequence/sig/myPulse.txt','w')
        print("creating TimePulse")
        fileObject.write("J C"+'\n')
        fileObject.write("LOOP_CTR = "+hex(int(self.LoopTime))+'\n')  # no LOOP now
        fileObject.write("CMD1 = 0x0"+'\n')
        fileObject.write("CMD2 = 0x0"+'\n')
        fileObject.write("CMD3 = 0x2"+'\n')
        fileObject.write("CMD4 = 0x0"+'\n')
        fileObject.write("CMD5 = TX_GATE | TX_PULSE | RX_PULSE"+'\n')
        ....

J C
LOOP_CTR = 0x1
CMD1 = 0x0
CMD2 = 0x0
CMD3 = 0x2
CMD4 = 0x0
CMD5 = TX_GATE | TX_PULSE | RX_PULSE
CMD6 = TX_GATE | TX_PULSE
CMD7 = GRAD_PULSE | RX_PULSE
CMD8 = GRAD_PULSE
CMD9 = TX_GATE | TX_PULSE | RX_PULSE | GRAD_PULSE
CMD10 = TX_GATE | TX_PULSE | GRAD_PULSE
LD64 2, LOOP_CTR
LD64 3, CMD3
LD64 4, CMD4
LD64 5, CMD5
LD64 6, CMD6
LD64 7, CMD7
LD64 8, CMD8
LD64 9, CMD9
LD64 10, CMD10 #以上是对板子的初始化
PR 3, 500 #从单元属性，到一维数组元素的值，再到写入的汇编语言，复杂的对应关系
PR 7, 120
TXOFFSET 0
PR 9, 120
PR 7, 420
PR 3, 300
PR 7, 120
TXOFFSET 1000
PR 9, 120
PR 5, 60
PR 3, 60
PR 7, 400
HALT

另一个有待完成的功能是读取学生编程的cpp文件。写入cpp文件的代码如下：

#X Y Z design的cpp
        fileObject=open("server/PulseProgram.cpp","w")
        fileObject.write("#include <stdio.h>"+'\n')
        fileObject.write("#include <stdlib.h>"+'\n')
        fileObject.write("#include <stdint.h>"+'\n')
        ...

 #fRO还没偶定义**************
  #fROprestep还没有定义****************************