本文主要是介绍文本编辑器中替换对话框的设计与实现,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
文章目录
- 1 文本编辑器中替换对话框的设计与实现
1 文本编辑器中替换对话框的设计与实现
替换对话框需求分析:
- 可复用软件部分。
- 查找文本框中的指定字符串。
- 替换单个指定字符串。
- 替换所有指定字符串。
附加需求:
- 点击关闭按钮后隐藏。
替换对话框的设计与实现:
替换对话框的界面布局:
替换算法流程图:
Main Window与ReplaceDialog之间的关系图:
ReplaceDialog.h:
#ifndef _REPLACEDIALOG_H_
#define _REPLACEDIALOG_H_#include "FindDialog.h"class ReplaceDialog : public FindDialog
{Q_OBJECTprotected:QLabel m_replaceLbl;QLineEdit m_replaceEdit;QPushButton m_replaceBtn;QPushButton m_replaceAllBtn;void initControl();void connectSlot();
protected slots:void onReplaceClicked();void onReplaceAllClicked();
public:explicit ReplaceDialog(QWidget *parent = 0, QPlainTextEdit* pText = 0);
};#endif // _REPLACEDIALOG_H_
ReplaceDialog.cpp:
#include "ReplaceDialog.h"ReplaceDialog::ReplaceDialog(QWidget *parent, QPlainTextEdit* pText) :FindDialog(parent, pText)
{initControl();connectSlot();setWindowTitle("Replace");
}void ReplaceDialog::initControl()
{m_replaceLbl.setText("Replace To:");m_replaceBtn.setText("Replace");m_replaceAllBtn.setText("Replace All");m_layout.removeWidget(&m_matchChkBx);m_layout.removeWidget(&m_radioGrpBx);m_layout.removeWidget(&m_closeBtn);m_layout.addWidget(&m_replaceLbl, 1, 0);m_layout.addWidget(&m_replaceEdit, 1, 1);m_layout.addWidget(&m_replaceBtn, 1, 2);m_layout.addWidget(&m_matchChkBx, 2, 0);m_layout.addWidget(&m_radioGrpBx, 2, 1);m_layout.addWidget(&m_replaceAllBtn, 2, 2);m_layout.addWidget(&m_closeBtn, 3, 2);
}void ReplaceDialog::connectSlot()
{connect(&m_replaceBtn, SIGNAL(clicked()), this, SLOT(onReplaceClicked()));connect(&m_replaceAllBtn, SIGNAL(clicked()), this, SLOT(onReplaceAllClicked()));
}void ReplaceDialog::onReplaceClicked()
{QString target = m_findEdit.text();QString to = m_replaceEdit.text();if( (m_pText != NULL) && (target != "") && (to != "") ){QString selText = m_pText->textCursor().selectedText();if( selText == target ){m_pText->insertPlainText(to);}onFindClicked();}
}void ReplaceDialog::onReplaceAllClicked()
{QString target = m_findEdit.text();QString to = m_replaceEdit.text();if( (m_pText != NULL) && (target != "") && (to != "") ){QString text = m_pText->toPlainText();text.replace(target, to, m_matchChkBx.isChecked() ? Qt::CaseSensitive : Qt::CaseInsensitive);m_pText->clear();m_pText->insertPlainText(text);}
}
参考资料:
- QT实验分析教程
这篇关于文本编辑器中替换对话框的设计与实现的文章就介绍到这儿,希望我们推荐的文章对编程师们有所帮助!