小部件的上下行 [英] Up or down lines of widgets

问题描述

在应用程序中，我创建像这样的小部件行(有一个用于创建该行的按钮，另一个是用于删除该小部件的按钮):

In a application I create lines of widgets like this (there is a button to create the line and another to remove the widget):

创建小部件行的代码:

def ajouter_ref_artistique(self) :
    '''
    Gestion des widgets (AJOUTER widgets) partie Références artistiques
    '''

    # Nombre d'éléments présents
    try :
        # ...
        r = len(self.l_t_ref_art)
    except :
        # ...
        r = len(self.liste_ref_artistiques)
    # Création des QTextEdit
    self.dico_chem_ref_art[r] = QTextEdit()
    self.dico_com_ref_art[r] = QTextEdit()
    self.fonte(self.dico_com_ref_art[r]) # Fontion pout l'attribution de la fonte
    self.dico_chem_ref_art[r].setMaximumWidth(150)
    self.dico_chem_ref_art[r].setMinimumWidth(150)
    self.dico_chem_ref_art[r].setMaximumHeight(84)
    self.dico_chem_ref_art[r].setMinimumHeight(84)
    self.dico_com_ref_art[r].setMaximumWidth(430)
    self.dico_com_ref_art[r].setMinimumWidth(430)
    self.dico_com_ref_art[r].setMaximumHeight(84)
    self.dico_com_ref_art[r].setMinimumHeight(84)
    # Création des boutons de chargement
    self.dico_bout_charg_ref_art[r] = QPushButton("Ouvrir référence art. {}".format(r+1))
    self.dico_bout_charg_ref_art[r].setMaximumWidth(180)
    self.dico_bout_charg_ref_art[r].setStyleSheet("background-color: qlineargradient(x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #fdfbf7, stop: 1 #6190F2);border-style: solid;border-width: 2px;border-radius: 8px;border-color: #9BB7F0;padding: 2px")
    # Répartition dans la grille
    self.grille_3_stack_6.addWidget(self.dico_chem_ref_art[r], r, 0)
    self.grille_3_stack_6.addWidget(self.dico_com_ref_art[r], r, 1)
    self.grille_3_stack_6.addWidget(self.dico_bout_charg_ref_art[r], r, 2)
    # Ecriture des n°s de lignes
    self.dico_chem_ref_art[r].setText(str(r+1)+'. ')
    # Placement en lecture seule (vignette de l'oeuvre et chemin)
    self.dico_chem_ref_art[r].setReadOnly(True)

    try :
        # ...
        self.l_t_ref_art.append([self.dico_chem_ref_art[r], self.dico_com_ref_art[r], r])
    except :
        # ...
        # id 0 --> self.dico_chem_ref_art[r] (QTextEdit pour récup des données et affichage vignette image)
        # id 1 --> self.dico_com_ref_art[r] (QTextEdit pour récup des données commentaires oeuvres)
        # id 2 --> r (Chiffre correspondant au numéro du bouton)
        self.liste_ref_artistiques.append([self.dico_chem_ref_art[r], self.dico_com_ref_art[r], r])

    # =====================================================
    # Signaux
    # ---------- Récup des données textuelles
    self.dico_chem_ref_art[r].textChanged.connect(self.changements_phase_6)
    self.dico_com_ref_art[r].textChanged.connect(self.changements_phase_6)
    # ---------- Récup du libellé du bouton sélectionné par l'utilisateur
    self.dico_bout_charg_ref_art[r].released.connect(self.libelle_bouton_ref_art)
    # =====================================================

用于删除小部件行的代码:

Code for removing widget lines :

def supprimer_ref_artistique(self) :
    '''
    Gestion des widgets (SUPPRIMER widgets) partie Références artistiques
    '''

    try :
        # Dans le cas du chargement d'une séquence prof
        row = len(self.l_t_ref_art) - 1
        del self.l_t_ref_art[row]
        # ...
        self.row_ref_art = row
    except :
        # Dans le cas de la 1ère création d'une séquence prof
        row = len(self.liste_ref_artistiques) - 1
        del self.liste_ref_artistiques[row]
        # ...
        self.row_ref_art = row

    if row >= 0:
        for column in range(self.grille_3_stack_6.columnCount()):
            item = self.grille_3_stack_6.itemAtPosition(row, column)
            #item = self.grille_3_stack_6.itemAtPosition(1, column)
            if item is not None:
                item.widget().deleteLater()

        del self.dico_chem_ref_art[row]
        del self.dico_com_ref_art[row]
        del self.dico_bout_charg_ref_art[row]

我也想使用向上"和向下"按钮更改小部件行的位置(向上或向下)，我不知道该怎么做.

I would also like to change the position of the widgets lines (up or down) with 'up' and 'down' buttons, I don't know how to do it.

推荐答案

您可以使用QListWidget存储行.

You can use a QListWidget to store your rows.

Qt对于将QWidget放置为QListWidget中的项有一些困难的语法.

Qt has some difficult syntax for putting a QWidget as an item in a QListWidget.

对于简单的文本，您可以按照这篇文章上移项目:

For simple text, you can follow this post to move items up:

currentRow  = self.listWidget.currentRow()
currentItem = self.listWidget.takeItem(currentRow)
self.listWidget.insertItem(currentRow - 1, currentItem)

和向下移动项目的类似过程.当行中有小部件时，它会涉及更多的内容.请参阅下面的完整示例.

And a similar process to move items down. When you have widgets in your rows, it gets a lot more involved. See complete example below.

import sys
import random
from PyQt5.QtWidgets import (QWidget, QPushButton, QLabel, QWidget,
    QHBoxLayout, QVBoxLayout, QApplication, QListWidget, QTextEdit,
    QListWidgetItem, QLayout, QLineEdit)


class Example(QWidget):

    def __init__(self):
        super().__init__()

        self.initUI()

    def initUI(self):

        addButton = QPushButton('+')
        addButton.clicked.connect(self.addrow)
        delButton = QPushButton('-')
        delButton.clicked.connect(self.delrow)
        upButton = QPushButton('▲', parent = self)
        upButton.clicked.connect(self.rowup)
        downButton = QPushButton('▼', parent = self)
        downButton.clicked.connect(self.rowdown)

        hbox = QHBoxLayout()
        hbox.addWidget(addButton)
        hbox.addWidget(delButton)
        hbox.addWidget(upButton)
        hbox.addWidget(downButton)

        self.listbox = QListWidget()

        vbox = QVBoxLayout()
        vbox.addLayout(hbox)
        vbox.addWidget(self.listbox)
        vbox.setStretch(0,1)
        vbox.setStretch(1,4)

        self.setLayout(vbox)

        self.setGeometry(300, 300, 600, 400)
        self.setWindowTitle('Test')    
        self.show()

    def rowup(self):

        row_num = self.listbox.currentRow()

        if row_num > 0:            
            row = self.listbox.itemWidget(self.listbox.currentItem())
            itemN = self.listbox.currentItem().clone()

            self.listbox.insertItem(row_num -1, itemN)
            self.listbox.setItemWidget(itemN, row)

            self.listbox.takeItem(row_num+1)
            self.listbox.setCurrentRow(row_num-1)

    def rowdown(self):

        row_num = self.listbox.currentRow()

        if row_num == -1:
            # no selection. abort
            return
        elif row_num < self.listbox.count():
            row = self.listbox.itemWidget(self.listbox.currentItem())
            itemN = self.listbox.currentItem().clone()


            self.listbox.insertItem(row_num + 2, itemN)
            self.listbox.setItemWidget(itemN, row)

            self.listbox.takeItem(row_num)
            self.listbox.setCurrentRow(row_num+1)

    def addrow(self):
        row = self.makerow()
        itemN = QListWidgetItem()
        itemN.setSizeHint(row.sizeHint())

        self.listbox.addItem(itemN)  # add itemN to end of list. use insertItem
                                     # to insert in specific location
        self.listbox.setItemWidget(itemN, row)


    def delrow(self):
        if self.listbox.currentRow() == -1:
            # no selection. delete last row
            row_num = self.listbox.count() - 1
        else:
            row_num = self.listbox.currentRow()

        item = self.listbox.takeItem(row_num)

        del item

    def makerow(self):

        widget = QWidget()
        hbox = QHBoxLayout()
        r = random.random()
        r = '%f' % r
        print(r)
        label = QLabel(r)
        textedit = QLineEdit()
        button = QPushButton('Ouvrir reference art %s' % r)
        hbox.addWidget(label)
        hbox.addWidget(textedit)
        hbox.addWidget(button)
        hbox.addStretch()
        hbox.setSizeConstraint(QLayout.SetFixedSize)


        widget.setLayout(hbox)

        return widget


if __name__ == '__main__':

    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())

这篇关于小部件的上下行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！