QDockWidget拆分器在QMainWindow调整大小时跳转 [英] QDockWidget splitter jumps when QMainWindow Resized
问题描述
在我的旧程序中,我在QDockWidget内有2列QTableWidget.
In an old program of mine, I have 2-column QTableWidget inside of a QDockWidget.
在近代(Qt 5.10)中构建它,我似乎必须覆盖表的sizeHint()才能获取它设置为除100px以外的宽度.
Building it in modern times (Qt 5.10) I seem to have to override the table's sizeHint() to get it to be a width besides 100px or something. Which was a bit annoying (didn't need this before--why isn't the table's width via headers the default?)
但是,在进行了调整之后,又有了另一个麻烦:如果用户为停靠小部件进行了拆分器的任何移动,则在任何调整窗口大小的情况下,拆分器都会丢失.我做了一点MCVE来显示效果...这是启动情况:
But with that tweaked, there's now another nuisance: if the user does any moving of the splitter for the dock widget, it will be lost on any window resize. I made a little MCVE to show the effect...here's the startup situation:
然后让我们说用户稍微拖动分离器(可能是扩展,可能是收缩-没关系):
Then let's say the user drags the splitter a bit (could be expansion, could be contraction--doesn't matter):
现在他们将窗口的底部边缘向下拖动一点,然后 snap ,它会跳回所需的大小(突然的跳动发生在鼠标第一次开始拖动时):
Now they drag the bottom edge of the window down a bit, and snap, it jumps back to the preferred size (the sudden jump occurs right when the mouse first starts dragging):
将水平大小策略从QSizePolicy::Preferred
更改为QSizePolicy::Ignored
似乎不会影响此行为,不调用setStretchLastSection()
似乎也无济于事.
Changing the horizontal size policy from QSizePolicy::Preferred
to QSizePolicy::Ignored
doesn't seem to influence this behavior, not calling setStretchLastSection()
doesn't seem to help either.
我希望如果垂直调整窗口的大小以使水平分割器完全不动...并且如果水平调整窗口的大小则可以进行比跳跃更渐进的操作.有任何想法吗? Qt Creator的监视列表似乎并不存在此问题,但我对消息来源不甚了解,无法深入研究其原因.
I'd prefer if the window be resized vertically that a horizontal splitter not move at all...and if it's resized horizontally that something more gradual be done than a jump. Any ideas? Qt Creator doesn't seem to have this problem with its watchlist, but I'm not familiar enough with the source to go digging into why.
mainwindow.h:
#include <QMainWindow>
QT_BEGIN_NAMESPACE
class QTextEdit;
class SizedTableWidget;
QT_END_NAMESPACE
class SizedTableWidget;
class MainWindow : public QMainWindow {
Q_OBJECT
QTextEdit *textEdit;
SizedTableWidget *table;
public:
MainWindow ();
};
mainwindow.cpp:
#include <QtWidgets>
#include "mainwindow.h"
class SizedTableWidget : public QTableWidget {
public:
SizedTableWidget (int rows, int columns, QWidget *parent) :
QTableWidget (rows, columns, parent) {}
QSize sizeHint() const {
return QSize (
verticalHeader()->width()
+ horizontalHeader()->length()
+ frameWidth() * 2,
horizontalHeader()->height()
+ verticalHeader()->length()
+ frameWidth() * 2
);
}
};
MainWindow::MainWindow() : textEdit(new QTextEdit) {
setCentralWidget(textEdit);
QDockWidget *dock = new QDockWidget(tr("Table"), this);
dock->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);
table = new SizedTableWidget (1 /* rows */, 2 /* cols */, dock);
table->setHorizontalHeaderLabels(QStringList() << "name" << "value");
QTableWidgetItem *nameItem = new QTableWidgetItem;
nameItem->setText("foo");
table->setItem(0, 0, nameItem);
QTableWidgetItem *valueItem = new QTableWidgetItem;
valueItem->setText("10");
table->setItem(0, 1, valueItem);
table->horizontalHeader()->setStretchLastSection(true);
table->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Expanding);
dock->setWidget(table);
addDockWidget(Qt::RightDockWidgetArea, dock);
}
P.S.如果有人知道为什么Windows上的列标题和行标题没有样式,我想知道...这是故意的吗?在Linux上看起来还不错.
P.S. if anyone knows why the column and row headers on Windows don't have any styling on them, I'd be interested to know...is this on purpose? Looks fine on Linux.
系统信息:
- Qt 5.10.0
- Qt Creator 4.5.0
- Windows 10 Home,1709 (内部版本16299.125)和MSVC 2017
- Kubuntu Linux 17.10和gcc 7.2.0
- Qt 5.10.0
- Qt Creator 4.5.0
- Windows 10 Home, 1709 (Build 16299.125) and MSVC 2017
- Kubuntu Linux 17.10 and gcc 7.2.0
推荐答案
这似乎是一个错误-已被多方确认-已出现在Qt 5.10中:
This appears to be a bug--now confirmed by multiple parties--that appeared in Qt 5.10:
https://bugreports.qt.io/browse/QTBUG-65592
在注释中给出了一个建议的解决方法,直到它被修复为止.
A proposed workaround until it is fixed is given in the comments:
调用
resizeDocks({nameOfAnyDock}, {40}, Qt::Horizontal)
启用了调整大小功能(确切的数字无关紧要).调用addDockWidget
后立即调用该函数.
Calling
resizeDocks({nameOfAnyDock}, {40}, Qt::Horizontal)
enabled the resize to work (the exact number is irrelevant). The function is called immediately after callingaddDockWidget
.
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