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Text editor of QT project practice ---------- episode 11
2022-06-25 01:00:00 【PureヾChan】
In previous blogs, the function of text editor has been almost realized , The functions of words and paragraphs are almost completed , But is it still ignoring the realization of color and bullet function ？
Next , Is to realize the color function and bullet function .
towards mainWindow.h Add function ：
public:
void textColor();Function implementation ：
void MainWindow::textColor()
{
if(activateChildWnd()){
QColor color=QColorDialog::getColor(activateChildWnd()->textColor(),this);// The first of the two parameters is to specify the color
if(!color.isValid()) return;
QTextCharFormat fmt;// Define a format object
fmt.setForeground(color);// Set the color
activateChildWnd()->setFormatOnSelectedWord(fmt);
QPixmap pix(16,16);// Choose a color , By the way, change the icon
pix.fill(color);
ui->colorAction->setIcon(pix);
}
}First of all, if you want to change the color, you must first judge whether it is an active sub window , Tugu is the use of QColorDialog Class getColor Function call palette , It will return the color selected by the user . Then judge whether the color is effective , If it is invalid, it directly returns .
Then define a text object , Temporarily setting the color format , When invoking the active child window setFormatOnSelectedWord Function to finally set the color format .Qpixmap It's a bitmap , Define this so that we can directly switch to the corresponding color on the bitmap and display it in the text box .
towards mainWindow.h Add slot function ：‘
private slots:
void on_colorAction_triggered();Slot function implementation ：
void MainWindow::on_colorAction_triggered()
{
textColor();
}Realize bullet application ：
towards ChildWnd.h Add function ：
public:
void setParaSyle(int pStyle);// Change bullets Function implementation ：
void ChildWnd::setParaSyle(int pStyle)
{
QTextCursor tcursor=textCursor();// Get a copy of the cursor
QTextListFormat::Style sname;
if(pStyle!=0){
switch (pStyle) {
case 1:
sname=QTextListFormat::ListDisc;// Solid round
break;
case 2:
sname=QTextListFormat::ListCircle;// The hollow circle 、
break;
case 3:
sname=QTextListFormat::ListSquare;// square
break;
case 4:
sname=QTextListFormat::ListDecimal;// Decimal numbers
break;
case 5:
sname=QTextListFormat::ListLowerAlpha;// Small Aladdin symbol
break;
case 6:
sname=QTextListFormat::ListUpperAlpha;// Capital Aladdin symbol
break;
case 7:
sname=QTextListFormat::ListLowerRoman;// Lowercase Roman characters
break;
case 8:
sname=QTextListFormat::ListUpperRoman;// Capital Roman characters
break;
default:
sname=QTextListFormat::ListDisc;// Solid round
break;
}
tcursor.beginEditBlock();
QTextBlockFormat tBlockFmt=tcursor.blockFormat();// Return text block format
QTextListFormat tListFmt;
if(tcursor.currentList()){
tListFmt=tcursor.currentList()->format();// Returns the current linked list format
}else{
tListFmt.setIndent(tBlockFmt.indent()+1);// Set indent
tBlockFmt.setIndent(0);
tcursor.setBlockFormat(tBlockFmt);
}
tListFmt.setStyle(sname);// Set bullets
tcursor.createList(tListFmt);
tcursor.endEditBlock();
}else{
QTextBlockFormat tbfmt;
tbfmt.setObjectIndex(-1);// Set the selected sequence number , That is, the corresponding enumeration value , Of course -1 non-existent
tcursor.mergeBlockFormat(tbfmt);// After setting up , And then merge it into the block format
}
}The parameter passed in represents the sequence number of the selected bullet , So let's define a QTextCursor Text cursor object tCursor Get a copy of the cursor textCursor(), Let me define one more QTextListFormat Class object , It is used to save the enumeration value of bullet format each time using the sequence number , This will be used later to set the bullet of the entire text box .
Then specify the start edit block of the text cursor , So let's define one QTextBlockFormat Object to get the block format of the current text cursor , Let me define one more QTextListFormat List format object , Then judge whether the current cursor has a linked list . If there is , Save the format of the current linked list , If not, set the indent of the linked list format , Set the format indent of the block format to 0, Finally, format the block .
Then use sname Saved bullet enumeration values , Then set the final format of the linked list format , utilize tListFmt Create a linked list in the saved linked list format . In the above case, the parameter passed in is not 0 The operation of , If the parameters passed in do not meet the requirements , Then set a nonexistent enumeration value to the format .
stay mainWindow.h Add functions and slot functions ：
public:
void paraStyle(int Style);
private slots:
void on_comboBox_activated(int index);Function implementation ：
void MainWindow::paraStyle(int Style)
{
if(activateChildWnd()){
activateChildWnd()->setParaSyle(Style);
}
}
void MainWindow::on_comboBox_activated(int index)
{
paraStyle(index);
}
Slot function call paraStyle(int style) function , This function calls the modified bullet function of the subclass to add bullets .
Program running effect ;
Source code ：
ChildWnd.h
#ifndef CHILDWND_H
#define CHILDWND_H
#include<QTextEdit>
// The idea is to create a sub window editing area in the main window , Is to call the constructor of another class , So that is ChildWnd This class
class ChildWnd : public QTextEdit
{
Q_OBJECT
public:
ChildWnd();
QString m_Currentpath; // The path of the current document
void newDoc(); // New document
QString GetCurDocName();// Extract the document name from the file path
bool loadDoc(const QString& docName);
void setCurDoc(const QString& docName);// Set the current document function
bool saveDoc();// Save the document
bool saveAsDoc();// Save as document
bool saveDocOpt(QString &docName);// Actually perform the save operation
void setFormatOnSelectedWord(const QTextCharFormat& fmt);
void setAlignofDocumnetText(int AlignType);
void setParaSyle(int pStyle);// Change bullets
protected:
void closeEvent(QCloseEvent *event);// Turn off event handling
private:
bool promptSave();// Try to save
private slots:
void docBeModified(); // The corresponding slot function when modifying the document
private:
bool m_bSaved; // Whether the document is saved
};
#endif // CHILDWND_H
mainWindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include"childwnd.h"
#include<QSignalMapper>
#include<QMdiSubWindow>
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
void InitMainWindow();// Initialize the window function
void DocNew();
void DocOpen();
void docSave();
void docSaveAs();
void docUndo();// revoke
void docRedo();// rewrite
void docCut();// shear
void docCopy();// Copy
void docPaste();// Paste
void textBold();// In bold
void textItalic();// Oblique cutting
void textUnderline();// Underline
void textFamliy(const QString& fmly);// Set text style
void textSize(const QString& font);// Set text font size
void textColor();
void paraStyle(int Style);
private slots:
void on_newAction_triggered();
void RefreshMenu();// Refresh window menu slot function
void addSubWindowListMenu();// Refresh window information function
void on_closeAction_triggered();
void on_closeAllAction_triggered();
void on_titleAction_triggered();
void on_cascadeAction_triggered();
void on_nextAction_triggered();
void on_previousAction_triggered();
void setActivSubWindow(QWidget*wnd);
void on_openAction_triggered();
void on_saveAction_triggered();
void on_saveAsAction_triggered();
void on_undoAction_triggered();
void on_redoAction_triggered();
void on_cutAction_triggered();
void on_copyAction_triggered();
void on_pasteAction_triggered();
void on_boldAction_triggered();
void on_italicAction_triggered();
void on_underlineAction_triggered();
void on_fontComboBox_activated(const QString &arg1);
void on_FontSize_comboBox_activated(const QString &arg1);
void on_letfAlignAction_triggered();
void on_centerAlignAction_triggered();
void on_rightAlignAction_triggered();
void on_justifyAction_triggered();
void on_colorAction_triggered();
void on_comboBox_activated(int index);
protected:
void closeEvent(QCloseEvent *event);
private:
void formatEnable();
ChildWnd* activateChildWnd();// obtain mdieara Active child window of
// Find window functions
QMdiSubWindow* FindChildWnd(const QString& docName);
private:
Ui::MainWindow *ui;
QSignalMapper* m_singnalmapper;// Create a signal mapper
};
#endif // MAINWINDOW_H
ChildWnd.cpp
#include "childwnd.h"
#include<QFileInfo>
#include<QFileDialog>
#include<QTextDocumentWriter>
#include<QMessageBox>
#include<QCloseEvent>
#include<QTextBlockFormat>
#include<QTextListFormat>
#include<QtWidgets>
ChildWnd::ChildWnd()
{
// Destroy the instance object of the class when the child window is closed , Reach recycling
setAttribute(Qt::WA_DeleteOnClose);
m_bSaved=false;// The original edit state is unchanged
}
void ChildWnd::newDoc()
{
static int wndSeqNum=1;
m_Currentpath=QString("WPS file %1").arg(wndSeqNum++);// Each time you create a document, the name is different ,, utilize wndSeqNum To achieve the goal
// Set the title of the form , Add... After document changes “*” Number identification
setWindowTitle(m_Currentpath+"[*]"+"-MyWPS");
connect(document(),SIGNAL(contentsChanged()),
this,SLOT(docBeModified()));
}
QString ChildWnd::GetCurDocName()
{
return QFileInfo(m_Currentpath).fileName();//fileINfo Class can be called from a file filename operation , Returns the file name extracted from the file path
}
bool ChildWnd::loadDoc(const QString &docName)
{
// First determine whether the loaded document name is empty
if(!docName.isEmpty()){
QFile file(docName);// Get all the information of the file through the file name
if(!file.exists()) return false;// File does not exist return false
if(!file.open(QFile::ReadOnly)) return false;// If the read-only mode fails to open, it returns false
QByteArray text=file.readAll();
if(Qt::mightBeRichText(text)){
setHtml(text);// If it is rich text, it is set to HTml
}else{
setPlainText(text);// If the rich text is not set to simple string format
}
setCurDoc(docName);
connect(document(),SIGNAL(contentsChanged()),
this,SLOT(docBeModified()));
return true;
}
}
void ChildWnd::setCurDoc(const QString &docName)
{
m_Currentpath=QFileInfo(docName).canonicalFilePath();// It will put the path name of the file “.” All removed
m_bSaved=true;
document()->setModified(false);// Set the document modification property to false
setWindowModified(false); // The window does not display the change logo
setWindowTitle(GetCurDocName()+"[*]");// Set sub window title
}
bool ChildWnd::saveDoc()
{
if(m_bSaved) return saveDocOpt(m_Currentpath);// Save directly after saving
else saveAsDoc();// Save as
}
bool ChildWnd::saveAsDoc()
{
// Save as, of course, provides a file window to prompt for saving
QString docName=QFileDialog::getSaveFileName(this,
" Save as ",
m_Currentpath,
"HTML file (*.htm *html);;"
" All the files (*.*)");
if(docName.isEmpty()) return false;
else return saveDocOpt(docName);
}
bool ChildWnd::saveDocOpt(QString &docName)
{
if(!(docName.endsWith(".htm",Qt::CaseInsensitive)||
docName.endsWith(".html",Qt::CaseInsensitive))){
// If it does not end in the specified format , Add specified format
docName+=".html";
}
QTextDocumentWriter writer(docName);
bool isSuccess=writer.write(this->document());//write Method returns the write state
if(isSuccess) setCurDoc(docName);// Survey setting window status function
return isSuccess;
}
void ChildWnd::setFormatOnSelectedWord(const QTextCharFormat &fmt)
{
QTextCursor tCursor=textCursor();
// Uncheck to select the text setting under the cursor
if(!tCursor.hasSelection()) tCursor.select(QTextCursor::WordUnderCursor);
// Selected , Merge text formatting
tCursor.mergeCharFormat(fmt);// Merge the text selected by the cursor with the selected format
mergeCurrentCharFormat(fmt);// Set the format of the subsequent text editor to the cursor selected text
}
void ChildWnd::setAlignofDocumnetText(int AlignType)
{
switch (AlignType) {
case 1:
setAlignment(Qt::AlignLeft|Qt::AlignAbsolute);
break;
case 2:
setAlignment(Qt::AlignRight|Qt::AlignAbsolute);
break;
case 3:
setAlignment(Qt::AlignCenter);
break;
case 4:
setAlignment(Qt::AlignJustify);
break;
default:
break;
}
}
void ChildWnd::setParaSyle(int pStyle)
{
QTextCursor tcursor=textCursor();// Get a copy of the cursor
QTextListFormat::Style sname;
if(pStyle!=0){
switch (pStyle) {
case 1:
sname=QTextListFormat::ListDisc;// Solid round
break;
case 2:
sname=QTextListFormat::ListCircle;// The hollow circle 、
break;
case 3:
sname=QTextListFormat::ListSquare;// square
break;
case 4:
sname=QTextListFormat::ListDecimal;// Decimal numbers
break;
case 5:
sname=QTextListFormat::ListLowerAlpha;// Small Aladdin symbol
break;
case 6:
sname=QTextListFormat::ListUpperAlpha;// Capital Aladdin symbol
break;
case 7:
sname=QTextListFormat::ListLowerRoman;// Lowercase Roman characters
break;
case 8:
sname=QTextListFormat::ListUpperRoman;// Capital Roman characters
break;
default:
sname=QTextListFormat::ListDisc;// Solid round
break;
}
tcursor.beginEditBlock();
QTextBlockFormat tBlockFmt=tcursor.blockFormat();// Return text block format
QTextListFormat tListFmt;
if(tcursor.currentList()){
tListFmt=tcursor.currentList()->format();// Returns the current linked list format
}else{
tListFmt.setIndent(tBlockFmt.indent()+1);// Set indent
tBlockFmt.setIndent(0);
tcursor.setBlockFormat(tBlockFmt);
}
tListFmt.setStyle(sname);// Set bullets
tcursor.createList(tListFmt);
tcursor.endEditBlock();
}else{
QTextBlockFormat tbfmt;
tbfmt.setObjectIndex(-1);// Set the selected sequence number , That is, the corresponding enumeration value , Of course -1 non-existent
tcursor.mergeBlockFormat(tbfmt);// After setting up , And then merge it into the block format
}
}
void ChildWnd::closeEvent(QCloseEvent *event)
{
if(promptSave()) event->accept();// Accept the event
else event->ignore();// Ignore Events
}
bool ChildWnd::promptSave()
{
// The document has not been modified
if(!document()->isModified()) return true;
QMessageBox::StandardButton result;
result=QMessageBox::warning(this,
QString(" System prompt "),
QString(" file %1 The modified , Save ？")
.arg(GetCurDocName()),
QMessageBox::Yes|
QMessageBox::Discard|
QMessageBox::No);
if(result==QMessageBox::Yes){
return saveDoc();
}else if(result==QMessageBox::No){
return false;
}
return true;// Select ignore to return true
}
void ChildWnd::docBeModified()
{
setWindowModified(document()->isModified());
}
main.cpp
#include "mainwindow.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
mainWindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include"childwnd.h"
#include<QDebug>
#include<QMdiSubWindow>
#include<QList>
#include<QCloseEvent>
#include<QFileDialog>
#include<QColorDialog>
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
InitMainWindow();
}
MainWindow::~MainWindow()
{
delete ui;
}
// Initialize the window function
void MainWindow::InitMainWindow()
{
// Initialize the character list
QFontDatabase fontdb;
foreach (int fontsize, fontdb.standardSizes()) {
//standarSizes The function returns the standard character list . Here is the size of each standard character
// Pass to fontsize
ui->FontSize_comboBox->addItem(QString::number(fontsize));// Pass the characters obtained each time to the component list
}
QFont defFont;// Program default font （ Including font size and font style ）
QString sFontSize;
int defFontSize;// The default font size of the current application
int defFontindex;// Serial number of the current font size table
defFont=QApplication::font();// Get the font style of the current program
defFontSize=defFont.pointSize();// Returns the current font size
sFontSize=QString::number(defFontSize);// Convert the integer font size to a convenient list of string type to find the sequence number
defFontindex=ui->FontSize_comboBox->findText(sFontSize);// Return the sequence number corresponding to the default font size
ui->FontSize_comboBox->setCurrentIndex(defFontindex);// Set the font size and serial number under the default program
// Add scroll bar
ui->mdiArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);// Set the vertical scroll bar , Property to display when needed
ui->mdiArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);// Set the horizontal scroll bar , Property to display when needed
// Note: when setting the scroll bar, you will encounter a small bug, When you want to set the scroll bar, you should leave a little space for the horizontal scroll bar , Otherwise it can't show
RefreshMenu();// When initializing, call to initialize the toolbar first 、
// When there are active child windows , Transmit signal refresh menu
connect(ui->mdiArea,&QMdiArea::subWindowActivated,this,&MainWindow::RefreshMenu);
addSubWindowListMenu();
// Here we need another slot function corresponding to , When the window is clicked, new window contents are added
connect(ui->menu_W,&QMenu::aboutToShow,this,&MainWindow::addSubWindowListMenu);
// Initialize the signal mapper
m_singnalmapper=new QSignalMapper(this);
connect(m_singnalmapper,SIGNAL(mapped(QWidget*)),
this,SLOT(setActivSubWindow(QWidget*)));
// We know that there can only be one alignment , So when we create the main form, we can only select one of the four alignments
QActionGroup* QAlignGroup=new QActionGroup(this);
QAlignGroup->addAction(ui->letfAlignAction);
QAlignGroup->addAction(ui->rightAlignAction);
QAlignGroup->addAction(ui->centerAlignAction);
QAlignGroup->addAction(ui->justifyAction);
}
void MainWindow::DocNew()
{
ChildWnd* childwnd=new ChildWnd;
ui->mdiArea->addSubWindow(childwnd);// Add the new sub window to the editing area
// Assign and cut at the same time Action Establishing a connection
connect(childwnd,SIGNAL(copyAvailable(bool)),ui->cutAction,SLOT(setEnabled(bool)));
connect(childwnd,SIGNAL(copyAvailable(bool)),ui->copyAction,SLOT(setEnabled(bool)));
childwnd->newDoc();
childwnd->show();
formatEnable();// Set the toolbar to available after creating a new window
}
void MainWindow::DocOpen()
{
QString docName=QFileDialog::getOpenFileName(this,
" Open file ",
"",
" text file (*.txt);;"
"HTML file (*.html *.htm);;"
" All the files (*.*)");
if(!docName.isEmpty()){
QMdiSubWindow* existWnd=FindChildWnd(docName);
if(existWnd){
// If you find this sub window
ui->mdiArea->setActiveSubWindow(existWnd);// Make this window active
return;
}
ChildWnd* childWnd=new ChildWnd;
ui->mdiArea->addSubWindow(childWnd);
connect(childWnd,SIGNAL(copyAvailable(bool)),
ui->cutAction,SLOT(setEnabled(bool)));//copyAvailable It is triggered when the document is opened and the text is selected
connect(childWnd,SIGNAL(copyAvailable(bool)),
ui->copyAction,SLOT(setEnabled(bool)));
if(childWnd->loadDoc(docName)){
statusBar()->showMessage(" The file is open ",3000);
childWnd->show();
formatEnable();
}else{
childWnd->close();
}
}
}
void MainWindow::docSave()
{
if(activateChildWnd()&&activateChildWnd()->saveDoc()){
statusBar()->showMessage(" Saved successfully ",3000);
}
}
void MainWindow::docSaveAs()
{
if(activateChildWnd()&&activateChildWnd()->saveAsDoc()){
statusBar()->showMessage(" Saved successfully ",3000);
}
}
void MainWindow::docUndo()
{
if(activateChildWnd()){
activateChildWnd()->undo();
}
}
void MainWindow::docRedo()
{
if(activateChildWnd()){
activateChildWnd()->redo();
}
}
void MainWindow::docCut()
{
if(activateChildWnd()){
activateChildWnd()->cut();
}
}
void MainWindow::docCopy()
{
if(activateChildWnd()){
activateChildWnd()->copy();
}
}
void MainWindow::docPaste()
{
if(activateChildWnd()){
activateChildWnd()->paste();
}
}
void MainWindow::textBold()
{
QTextCharFormat fmt;
fmt.setFontWeight(ui->boldAction->isChecked()?QFont::Bold:QFont::Normal);
if(activateChildWnd()){
activateChildWnd()->setFormatOnSelectedWord(fmt);
}
}
void MainWindow::textItalic()
{
QTextCharFormat fmt;
fmt.setFontItalic(ui->italicAction->isChecked());
// Determine as active child window
if(activateChildWnd()){
activateChildWnd()->setFormatOnSelectedWord(fmt);
}
}
void MainWindow::textUnderline()
{
QTextCharFormat fmt;
fmt.setFontUnderline(ui->underlineAction->isChecked());
// Determine whether it is an active child window
if(activateChildWnd()){
activateChildWnd()->setFormatOnSelectedWord(fmt);// Set the format according to the selected format
}
}
void MainWindow::textFamliy(const QString& fmly)
{
QTextCharFormat fmt;
fmt.setFontFamily(fmly);// Set text font style
if(activateChildWnd()){
activateChildWnd()->setFormatOnSelectedWord(fmt);
}
}
void MainWindow::textSize(const QString& font)
{
qreal fontsize=font.toFloat();
if(font.toFloat()>0){
QTextCharFormat fmt;
fmt.setFontPointSize(fontsize);// Set format font size
if(activateChildWnd()){
activateChildWnd()->setFormatOnSelectedWord(fmt);// Set the font format of the text window
}
}
}
void MainWindow::textColor()
{
if(activateChildWnd()){
QColor color=QColorDialog::getColor(activateChildWnd()->textColor(),this);// The first of the two parameters is to specify the color
if(!color.isValid()) return;
QTextCharFormat fmt;// Define a format object
fmt.setForeground(color);// Set the color
activateChildWnd()->setFormatOnSelectedWord(fmt);
QPixmap pix(16,16);// Choose a color , By the way, change the icon
pix.fill(color);
ui->colorAction->setIcon(pix);
}
}
void MainWindow::paraStyle(int Style)
{
if(activateChildWnd()){
activateChildWnd()->setParaSyle(Style);
}
}
void MainWindow::formatEnable()
{
ui->boldAction->setEnabled(true);// Set the functions of the toolbar to available
ui->italicAction->setEnabled(true);
ui->underlineAction->setEnabled(true);
ui->letfAlignAction->setEnabled(true);
ui->centerAlignAction->setEnabled(true);
ui->rightAlignAction->setEnabled(true);
ui->justifyAction->setEnabled(true);
ui->colorAction->setEnabled(true);
//qDebug()<<12%1<<endl;
}
ChildWnd *MainWindow::activateChildWnd()
{
QMdiSubWindow*actWnd=ui->mdiArea->activeSubWindow();// Get the active window of the document editor
if(actWnd)
return qobject_cast<ChildWnd*>(actWnd->widget());// If it is an active window, convert the window to the target window and return
else
return 0;
}
QMdiSubWindow *MainWindow::FindChildWnd(const QString &docName)
{
QString strFile=QFileInfo(docName).canonicalFilePath();
foreach (QMdiSubWindow* subWnd, ui->mdiArea->subWindowList()) {
ChildWnd* childWnd=qobject_cast<ChildWnd*>(subWnd->widget());// Convert each child window to ChildWnd type
if(childWnd->m_Currentpath==strFile)return subWnd;
}
return 0;
}
void MainWindow::on_newAction_triggered()
{
DocNew();// Click the create action to create a new document
}
void MainWindow::RefreshMenu()
{
bool hasChild;
hasChild=(activateChildWnd()!=0);
ui->saveAction->setEnabled(hasChild);
ui->printAction->setEnabled(hasChild);
ui->saveAsAction->setEnabled(hasChild);
ui->printPreviewAction->setEnabled(hasChild);
ui->pasteAction->setEnabled(hasChild);
ui->closeAction->setEnabled(hasChild);
ui->closeAllAction->setEnabled(hasChild);
ui->titleAction->setEnabled(hasChild);
ui->cascadeAction->setEnabled(hasChild);
ui->nextAction->setEnabled(hasChild);
ui->previousAction->setEnabled(hasChild);
// Besides the above document operations, there are also text operations
bool hasSelect=(activateChildWnd() && activateChildWnd()->textCursor().hasSelection());//textcursor The function returns information about the selected text , This function is used to check whether the text is selected
ui->copyAction->setEnabled(hasSelect);
ui->cutAction->setEnabled(hasSelect);
ui->boldAction->setEnabled(hasSelect);
ui->italicAction->setEnabled(hasSelect);
ui->underlineAction->setEnabled(hasSelect);
ui->letfAlignAction->setEnabled(hasSelect);
ui->centerAlignAction->setEnabled(hasSelect);
ui->rightAlignAction->setEnabled(hasSelect);
ui->colorAction->setEnabled(hasSelect);
ui->justifyAction->setEnabled(hasSelect);
}
void MainWindow::addSubWindowListMenu()
{
// Because every time you click hi Execute this function , If you don't clear it first, the menu bar will become longer and longer
ui->menu_W->clear();
ui->menu_W->addAction(ui->closeAction);
ui->menu_W->addAction(ui->closeAllAction);
ui->menu_W->addSeparator();
ui->menu_W->addAction(ui->titleAction);
ui->menu_W->addAction(ui->cascadeAction);
ui->menu_W->addSeparator();
ui->menu_W->addAction(ui->nextAction);
ui->menu_W->addAction(ui->previousAction);
// This is the corresponding function when clicking on the window , Then we have to judge whether there is an active sub window
QList<QMdiSubWindow*> wnds=ui->mdiArea->subWindowList();// This function will mdiArea The window in the is returned in the form of a linked list
if(!wnds.isEmpty()){
ui->menu_W->addSeparator();// If there is an active child window, add a split line
}
for(int i=0;i<wnds.size();++i){
ChildWnd* childwnd=qobject_cast<ChildWnd*>(wnds.at(i)->widget());// Convert the elements in the linked list into components , Then the type is converted to ChildWnds
QString menuItem_text;
menuItem_text=QString("%1 %2")
.arg(i+1)
.arg(childwnd->GetCurDocName());
QAction* menuItem_act=ui->menu_W->addAction(menuItem_text);// Add the name of the window to menu_w Inside
menuItem_act->setCheckable(true);
menuItem_act->setChecked(childwnd==activateChildWnd());// Check whether it is an active sub window ,activateChildWnd Function returns whether the window is an active child window
// Add each one to the Action Add signal
connect(menuItem_act,SIGNAL(triggered(bool)),
m_singnalmapper,SLOT(map()));// every last action The menu will trigger when it is clicked triggered Signal execution map() Slot function
// In this case, it will be implemented map（） function , But how to distinguish them ？
m_singnalmapper->setMapping(menuItem_act,wnds.at(i));// By setting different Action The difference between , Use serial numbers to distinguish
}
formatEnable();
}
void MainWindow::on_closeAction_triggered()
{
ui->mdiArea->closeActiveSubWindow();// Close the active child window
}
void MainWindow::on_closeAllAction_triggered()
{
ui->mdiArea->closeAllSubWindows();// Close all active child windows
}
void MainWindow::on_titleAction_triggered()
{
ui->mdiArea->tileSubWindows();// tile
}
void MainWindow::on_cascadeAction_triggered()
{
ui->mdiArea->cascadeSubWindows();//cengdie
}
void MainWindow::on_nextAction_triggered()
{
ui->mdiArea->activateNextSubWindow();// Next window
}
void MainWindow::on_previousAction_triggered()
{
ui->mdiArea->activatePreviousSubWindow();// The previous window
}
void MainWindow::setActivSubWindow(QWidget*wnd)
{
// First, determine whether it is an active child window
if(!wnd){
return;
}else{
// Set this window in the text editing area as the active sub window
ui->mdiArea->setActiveSubWindow(qobject_cast<QMdiSubWindow*>(wnd));
// Setting the active sub window is passed into a text editing area mdiSubWindow Of , So type conversion is used here
}
}
void MainWindow::closeEvent(QCloseEvent *event){
ui->mdiArea->closeAllSubWindows();// When the window is closed, of course, the child window must also be closed
if(ui->mdiArea->currentSubWindow())
event->ignore();// Ignore this event
else
event->accept();// Accept this event
}
void MainWindow::on_openAction_triggered()
{
DocOpen();// Open document
}
void MainWindow::on_saveAction_triggered()
{
docSave();// preservation
}
void MainWindow::on_saveAsAction_triggered()
{
docSaveAs();// Save as
}
void MainWindow::on_undoAction_triggered()
{
docUndo();
}
void MainWindow::on_redoAction_triggered()
{
docRedo();
}
void MainWindow::on_cutAction_triggered()
{
docCut();
}
void MainWindow::on_copyAction_triggered()
{
docCopy();
}
void MainWindow::on_pasteAction_triggered()
{
docPaste();
}
void MainWindow::on_boldAction_triggered()
{
textBold();
}
void MainWindow::on_italicAction_triggered()
{
textItalic();
}
void MainWindow::on_underlineAction_triggered()
{
textUnderline();
}
void MainWindow::on_fontComboBox_activated(const QString &arg1)
{
textFamliy(arg1);
}
void MainWindow::on_FontSize_comboBox_activated(const QString &arg1)
{
textSize(arg1);
}
void MainWindow::on_letfAlignAction_triggered()
{
if(activateChildWnd()){
activateChildWnd()->setAlignofDocumnetText(1);
}
}
void MainWindow::on_centerAlignAction_triggered()
{
if(activateChildWnd()){
activateChildWnd()->setAlignofDocumnetText(3);
}
}
void MainWindow::on_rightAlignAction_triggered()
{
if(activateChildWnd()){
activateChildWnd()->setAlignofDocumnetText(2);
}
}
void MainWindow::on_justifyAction_triggered()
{
if(activateChildWnd()){
activateChildWnd()->setAlignofDocumnetText(4);
}
}
void MainWindow::on_colorAction_triggered()
{
textColor();
}
void MainWindow::on_comboBox_activated(int index)
{
paraStyle(index);
}
ui I won't release the file ... Finally, it will be integrated into a compressed package
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