在这个程序中实现了字体和字号的选择显示以及字体的设置实现,工具按钮的实现方法,图片的显示、放大缩小与旋转操作,菜单栏的实现,文件打开、新建等操作。
示例片段:
- 菜单栏动作:设置快捷方式、状态提示
//“打开”动作
openFileAction =new QAction(QIcon("open.png"),tr("打开"),this);//(a)
openFileAction->setShortcut(tr("Ctrl+O")); //(b)
openFileAction->setStatusTip(tr("打开一个文件")); //(c)
connect(openFileAction,SIGNAL(triggered()),this,SLOT(ShowOpenFile()));
- 组合动作:动作选其一、设置按钮是否可选
//排序:左对齐、右对齐、居中和两端对齐
actGrp =new QActionGroup(this);
leftAction =new QAction(QIcon("left.png"),"左对齐",actGrp);
leftAction->setCheckable(true);
rightAction =new QAction(QIcon("right.png"),"右对齐",actGrp);
rightAction->setCheckable(true);
centerAction =new QAction(QIcon("center.png"),"居中",actGrp);
centerAction->setCheckable(true);
justifyAction =new QAction(QIcon("justify.png"),"两端对齐",actGrp);
justifyAction->setCheckable(true);
connect(actGrp,SIGNAL(triggered(QAction*)),this,SLOT(ShowAlignment (QAction*)));
- 创建菜单
//文件菜单
fileMenu =menuBar()->addMenu(tr("文件")); //(a)
fileMenu->addAction(openFileAction); //(b)
fileMenu->addAction(NewFileAction);
fileMenu->addAction(PrintTextAction);
fileMenu->addAction(PrintImageAction);
fileMenu->addSeparator();
fileMenu->addAction(exitAction);
- 工具条的实现
//编辑工具条
zoomTool =addToolBar("Edit");
zoomTool->addAction(copyAction);
zoomTool->addAction(cutAction);
zoomTool->addAction(pasteAction);
zoomTool->addSeparator(); //添加分割线
zoomTool->addAction(zoomInAction);
zoomTool->addAction(zoomOutAction);
//字体工具条
fontToolBar =addToolBar("Font");
fontToolBar->addWidget(fontLabel1);
fontToolBar->addWidget(fontComboBox);
fontToolBar->addWidget(fontLabel2);
fontToolBar->addWidget(sizeComboBox);
fontToolBar->addSeparator();
fontToolBar->addWidget(boldBtn);
fontToolBar->addWidget(italicBtn);
fontToolBar->addWidget(underlineBtn);
fontToolBar->addSeparator();
fontToolBar->addWidget(colorBtn);
- 设置字体字号下拉框
//设置字体
fontLabel1 =new QLabel(tr("字体:"));
fontComboBox =new QFontComboBox;
fontComboBox->setFontFilters(QFontComboBox::ScalableFonts);
fontLabel2 =new QLabel(tr("字号:"));
sizeComboBox =new QComboBox;
QFontDatabase db;
foreach(int size,db.standardSizes())
sizeComboBox->addItem(QString::number(size));
完整代码:
1.main.cpp
#include "imgprocessor.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QFont f("ZYSong18030",12); //设置显示的字体格式
a.setFont(f);
ImgProcessor w;
w.show();
return a.exec();
}
2.imgprocessor.h
#ifndef IMGPROCESSOR_H
#define IMGPROCESSOR_H
#include <QMainWindow>
#include <QImage>
#include <QLabel>
#include <QMenu>
#include <QMenuBar>
#include <QAction>
#include <QComboBox>
#include <QSpinBox>
#include <QToolBar>
#include <QFontComboBox>
#include <QToolButton>
#include <QTextCharFormat>
#include "showwidget.h"
class ImgProcessor : public QMainWindow
{
Q_OBJECT
public:
ImgProcessor(QWidget *parent = 0);
~ImgProcessor();
void createActions(); //创建动作
void createMenus(); //创建菜单
void createToolBars(); //创建工具栏
void loadFile(QString filename);
void mergeFormat(QTextCharFormat);
private:
QMenu *fileMenu; //各项菜单栏
QMenu *zoomMenu;
QMenu *rotateMenu;
QMenu *mirrorMenu;
QImage img;
QString fileName;
ShowWidget *showWidget;
QAction *openFileAction; //文件菜单项
QAction *NewFileAction;
QAction *PrintTextAction;
QAction *PrintImageAction;
QAction *exitAction;
QAction *copyAction; //编辑菜单项
QAction *cutAction;
QAction *pasteAction;
QAction *aboutAction;
QAction *zoomInAction;
QAction *zoomOutAction;
QAction *rotate90Action; //旋转菜单项
QAction *rotate180Action;
QAction *rotate270Action;
QAction *mirrorVerticalAction; //镜像菜单项
QAction *mirrorHorizontalAction;
QAction *undoAction;
QAction *redoAction;
QToolBar *fileTool; //工具栏
QToolBar *zoomTool;
QToolBar *rotateTool;
QToolBar *mirrorTool;
QToolBar *doToolBar;
QLabel *fontLabel1; //字体设置项
QFontComboBox *fontComboBox;
QLabel *fontLabel2;
QComboBox *sizeComboBox;
QToolButton *boldBtn;
QToolButton *italicBtn;
QToolButton *underlineBtn;
QToolButton *colorBtn;
QToolBar *fontToolBar; //字体工具栏
QLabel *listLabel; //排序设置项
QComboBox *listComboBox;
QActionGroup *actGrp;
QAction *leftAction;
QAction *rightAction;
QAction *centerAction;
QAction *justifyAction;
QToolBar *listToolBar; //排序工具栏
protected slots:
void ShowNewFile();
void ShowOpenFile();
void ShowPrintText();
void ShowPrintImage();
void ShowZoomIn();
void ShowZoomOut();
void ShowRotate90();
void ShowRotate180();
void ShowRotate270();
void ShowMirrorVertical();
void ShowMirrorHorizontal();
void ShowFontComboBox(QString comboStr);
void ShowSizeSpinBox(QString spinValue);
void ShowBoldBtn();
void ShowItalicBtn();
void ShowUnderlineBtn();
void ShowColorBtn();
void ShowCurrentFormatChanged(const QTextCharFormat &fmt);
void ShowList(int);
void ShowAlignment(QAction *act);
void ShowCursorPositionChanged();
};
#endif // IMGPROCESSOR_H
3.imgprocessor.cpp
#include "imgprocessor.h"
#include <QFileDialog>
#include <QFile>
#include <QTextStream>
#include <QPrintDialog>
#include <QPrinter>
#include <QPainter>
#include <QColorDialog>
#include <QColor>
#include <QTextList>
ImgProcessor::ImgProcessor(QWidget *parent)
: QMainWindow(parent)
{
setWindowTitle(tr("Easy Word")); //设置窗体标题
showWidget =new ShowWidget(this); //(a)
setCentralWidget(showWidget);
//在工具栏上嵌入控件
//设置字体
fontLabel1 =new QLabel(tr("字体:"));
fontComboBox =new QFontComboBox;
fontComboBox->setFontFilters(QFontComboBox::ScalableFonts);
fontLabel2 =new QLabel(tr("字号:"));
sizeComboBox =new QComboBox;
QFontDatabase db;
foreach(int size,db.standardSizes())
sizeComboBox->addItem(QString::number(size));
boldBtn =new QToolButton;
boldBtn->setIcon(QIcon("bold.png"));
boldBtn->setCheckable(true);
italicBtn =new QToolButton;
italicBtn->setIcon(QIcon("italic.png"));
italicBtn->setCheckable(true);
underlineBtn =new QToolButton;
underlineBtn->setIcon(QIcon("underline.png"));
underlineBtn->setCheckable(true);
colorBtn =new QToolButton;
colorBtn->setIcon(QIcon("color.png"));
colorBtn->setCheckable(true);
//排序
listLabel =new QLabel(tr("排序"));
listComboBox =new QComboBox;
listComboBox->addItem("Standard");
listComboBox->addItem("QTextListFormat::ListDisc");
listComboBox->addItem("QTextListFormat::ListCircle");
listComboBox->addItem("QTextListFormat::ListSquare");
listComboBox->addItem("QTextListFormat::ListDecimal");
listComboBox->addItem("QTextListFormat::ListLowerAlpha");
listComboBox->addItem("QTextListFormat::ListUpperAlpha");
listComboBox->addItem("QTextListFormat::ListLowerRoman");
listComboBox->addItem("QTextListFormat::ListUpperRoman");
/* 创建动作、菜单、工具栏的函数 */
createActions();
createMenus();
createToolBars();
if(img.load("image.png"))
{
//在imageLabel对象中放置图像
showWidget->imageLabel->setPixmap(QPixmap::fromImage(img));
}
connect(fontComboBox,SIGNAL(activated(QString)),
this,SLOT(ShowFontComboBox(QString)));
connect(sizeComboBox,SIGNAL(activated(QString)),
this,SLOT(ShowSizeSpinBox(QString)));
connect(boldBtn,SIGNAL(clicked()),this,SLOT(ShowBoldBtn()));
connect(italicBtn,SIGNAL(clicked()),this,SLOT(ShowItalicBtn()));
connect(underlineBtn,SIGNAL(clicked()),this,SLOT(ShowUnderlineBtn()));
connect(colorBtn,SIGNAL(clicked()),this,SLOT(ShowColorBtn()));
connect(showWidget->text,SIGNAL(currentCharFormatChanged(QTextCharFormat&)),this,SLOT(ShowCurrentFormatChanged(QTextCharFormat&)));
connect(listComboBox,SIGNAL(activated(int)),this,SLOT(ShowList(int)));
connect(showWidget->text->document(),SIGNAL(undoAvailable(bool)),redoAction,SLOT(setEnabled(bool)));
connect(showWidget->text->document(),SIGNAL(redoAvailable(bool)),redoAction,SLOT(setEnabled(bool)));
connect(showWidget->text,SIGNAL(cursorPositionChanged()),this,SLOT(ShowCursorPositionChanged()));
}
void ImgProcessor::createActions()
{
//“打开”动作
openFileAction =new QAction(QIcon("open.png"),tr("打开"),this);//(a)
openFileAction->setShortcut(tr("Ctrl+O")); //(b)
openFileAction->setStatusTip(tr("打开一个文件")); //(c)
connect(openFileAction,SIGNAL(triggered()),this,SLOT(ShowOpenFile()));
//“新建”动作
NewFileAction =new QAction(QIcon("new.png"),tr("新建"),this);
NewFileAction->setShortcut(tr("Ctrl+N"));
NewFileAction->setStatusTip(tr("新建一个文件"));
connect(NewFileAction,SIGNAL(triggered()),this,SLOT(ShowNewFile()));
//“退出”动作
exitAction =new QAction(tr("退出"),this);
exitAction->setShortcut(tr("Ctrl+Q"));
exitAction->setStatusTip(tr("退出程序"));
connect(exitAction,SIGNAL(triggered()),this,SLOT(close()));
//“复制”动作
copyAction =new QAction(QIcon("copy.png"),tr("复制"),this);
copyAction->setShortcut(tr("Ctrl+C"));
copyAction->setStatusTip(tr("复制文件"));
connect(copyAction,SIGNAL(triggered()),showWidget->text,SLOT (copy()));
//“剪切”动作
cutAction =new QAction(QIcon("cut.png"),tr("剪切"),this);
cutAction->setShortcut(tr("Ctrl+X"));
cutAction->setStatusTip(tr("剪切文件"));
connect(cutAction,SIGNAL(triggered()),showWidget->text,SLOT (cut()));
//“粘贴”动作
pasteAction =new QAction(QIcon("paste.png"),tr("粘贴"),this);
pasteAction->setShortcut(tr("Ctrl+V"));
pasteAction->setStatusTip(tr("粘贴文件"));
connect(pasteAction,SIGNAL(triggered()),showWidget->text,SLOT (paste()));
//“关于”动作
aboutAction =new QAction(tr("关于"),this);
connect(aboutAction,SIGNAL(triggered()),this,SLOT (QApplication::aboutQt()));
//“打印文本”动作
PrintTextAction =new QAction(QIcon("printText.png"),tr("打印文本"), this);
PrintTextAction->setStatusTip(tr("打印一个文本"));
connect(PrintTextAction,SIGNAL(triggered()),this,SLOT(ShowPrintText()));
//“打印图像”动作
PrintImageAction =new QAction(QIcon("printImage.png"),tr("打印图像"), this);
PrintImageAction->setStatusTip(tr("打印一幅图像"));
connect(PrintImageAction,SIGNAL(triggered()),this,SLOT(ShowPrintImage()));
//“放大”动作
zoomInAction =new QAction(QIcon("zoomin.png"),tr("放大"),this);
zoomInAction->setStatusTip(tr("放大一张图片"));
connect(zoomInAction,SIGNAL(triggered()),this,SLOT(ShowZoomIn()));
//“缩小”动作
zoomOutAction =new QAction(QIcon("zoomout.png"),tr("缩小"),this);
zoomOutAction->setStatusTip(tr("缩小一张图片"));
connect(zoomOutAction,SIGNAL(triggered()),this,SLOT(ShowZoomOut()));
//实现图像旋转的动作(Action)
//旋转90°
rotate90Action =new QAction(QIcon("rotate90.png"),tr("旋转90°"),this);
rotate90Action->setStatusTip(tr("将一幅图旋转90°"));
connect(rotate90Action,SIGNAL(triggered()),this,SLOT(ShowRotate90()));
//旋转180°
rotate180Action =new QAction(QIcon("rotate180.png"),tr("旋转180°"), this);
rotate180Action->setStatusTip(tr("将一幅图旋转180°"));
connect(rotate180Action,SIGNAL(triggered()),this,SLOT(ShowRotate180()));
//旋转270°
rotate270Action =new QAction(QIcon("rotate270.png"),tr("旋转270°"), this);
rotate270Action->setStatusTip(tr("将一幅图旋转270°"));
connect(rotate270Action,SIGNAL(triggered()),this,SLOT(ShowRotate270()));
//实现图像镜像的动作(Action)
//纵向镜像
mirrorVerticalAction =new QAction(QIcon("mirrorVertical.png"), tr ("纵向镜像"),this);
mirrorVerticalAction->setStatusTip(tr("对一幅图做纵向镜像"));
connect(mirrorVerticalAction,SIGNAL(triggered()),this,SLOT(ShowMirrorVertical()));
//横向镜像
mirrorHorizontalAction =new QAction(QIcon("mirrorHorizontal.png"), tr("横向镜像"),this);
mirrorHorizontalAction->setStatusTip(tr("对一幅图做横向镜像"));
connect(mirrorHorizontalAction,SIGNAL(triggered()),this,SLOT(ShowMirrorHorizontal()));
//排序:左对齐、右对齐、居中和两端对齐
actGrp =new QActionGroup(this);
leftAction =new QAction(QIcon("left.png"),"左对齐",actGrp);
leftAction->setCheckable(true);
rightAction =new QAction(QIcon("right.png"),"右对齐",actGrp);
rightAction->setCheckable(true);
centerAction =new QAction(QIcon("center.png"),"居中",actGrp);
centerAction->setCheckable(true);
justifyAction =new QAction(QIcon("justify.png"),"两端对齐",actGrp);
justifyAction->setCheckable(true);
connect(actGrp,SIGNAL(triggered(QAction*)),this,SLOT(ShowAlignment (QAction*)));
//实现撤销和恢复的动作(Action)
//撤销和恢复
undoAction =new QAction(QIcon("undo.png"),"撤销",this);
connect(undoAction,SIGNAL(triggered()),showWidget->text,SLOT (undo()));
redoAction =new QAction(QIcon("redo.png"),"重做",this);
connect(redoAction,SIGNAL(triggered()),showWidget->text,SLOT (redo()));
}
void ImgProcessor::createMenus()
{
//文件菜单
fileMenu =menuBar()->addMenu(tr("文件")); //(a)
fileMenu->addAction(openFileAction); //(b)
fileMenu->addAction(NewFileAction);
fileMenu->addAction(PrintTextAction);
fileMenu->addAction(PrintImageAction);
fileMenu->addSeparator();
fileMenu->addAction(exitAction);
//缩放菜单
zoomMenu =menuBar()->addMenu(tr("编辑"));
zoomMenu->addAction(copyAction);
zoomMenu->addAction(cutAction);
zoomMenu->addAction(pasteAction);
zoomMenu->addAction(aboutAction);
zoomMenu->addSeparator();
zoomMenu->addAction(zoomInAction);
zoomMenu->addAction(zoomOutAction);
//旋转菜单
rotateMenu =menuBar()->addMenu(tr("旋转"));
rotateMenu->addAction(rotate90Action);
rotateMenu->addAction(rotate180Action);
rotateMenu->addAction(rotate270Action);
//镜像菜单
mirrorMenu =menuBar()->addMenu(tr("镜像"));
mirrorMenu->addAction(mirrorVerticalAction);
mirrorMenu->addAction(mirrorHorizontalAction);
}
void ImgProcessor::createToolBars()
{
//文件工具条
fileTool =addToolBar("File"); //(a)
fileTool->addAction(openFileAction); //(b)
fileTool->addAction(NewFileAction);
fileTool->addAction(PrintTextAction);
fileTool->addAction(PrintImageAction);
//编辑工具条
zoomTool =addToolBar("Edit");
zoomTool->addAction(copyAction);
zoomTool->addAction(cutAction);
zoomTool->addAction(pasteAction);
zoomTool->addSeparator();
zoomTool->addAction(zoomInAction);
zoomTool->addAction(zoomOutAction);
//旋转工具条
rotateTool =addToolBar("rotate");
rotateTool->addAction(rotate90Action);
rotateTool->addAction(rotate180Action);
rotateTool->addAction(rotate270Action);
//撤销和重做工具条
doToolBar =addToolBar("doEdit");
doToolBar->addAction(undoAction);
doToolBar->addAction(redoAction);
//字体工具条
fontToolBar =addToolBar("Font");
fontToolBar->addWidget(fontLabel1);
fontToolBar->addWidget(fontComboBox);
fontToolBar->addWidget(fontLabel2);
fontToolBar->addWidget(sizeComboBox);
fontToolBar->addSeparator();
fontToolBar->addWidget(boldBtn);
fontToolBar->addWidget(italicBtn);
fontToolBar->addWidget(underlineBtn);
fontToolBar->addSeparator();
fontToolBar->addWidget(colorBtn);
//排序工具条
listToolBar =addToolBar("list");
listToolBar->addWidget(listLabel);
listToolBar->addWidget(listComboBox);
listToolBar->addSeparator();
listToolBar->addActions(actGrp->actions());
}
void ImgProcessor::ShowNewFile()
{
ImgProcessor *newImgProcessor =new ImgProcessor;
newImgProcessor->show();
}
void ImgProcessor::ShowOpenFile()
{
fileName =QFileDialog::getOpenFileName(this);
if(!fileName.isEmpty())
{
if(showWidget->text->document()->isEmpty())
{
loadFile(fileName);
}
else
{
ImgProcessor *newImgProcessor =new ImgProcessor;
newImgProcessor->show();
newImgProcessor->loadFile(fileName);
}
}
}
void ImgProcessor::loadFile(QString filename)
{
printf("file name:%s\n",filename.data());
QFile file(filename);
if(file.open(QIODevice::ReadOnly|QIODevice::Text))
{
QTextStream textStream(&file);
while(!textStream.atEnd())
{
showWidget->text->append(textStream.readLine());
printf("read line\n");
}
printf("end\n");
}
}
void ImgProcessor::ShowPrintText()
{
QPrinter printer; //新建一个QPrinter对象
QPrintDialog printDialog(&printer,this); //(a)
if(printDialog.exec()) //(b)
{
//获得QTextEdit对象的文档
QTextDocument *doc =showWidget->text->document();
doc->print(&printer); //打印
}
}
void ImgProcessor::ShowPrintImage()
{
QPrinter printer; //新建一个QPrinter对象
QPrintDialog printDialog(&printer,this); //(a)
if(printDialog.exec()) //(b)
{
QPainter painter(&printer); //(c)
QRect rect =painter.viewport(); //获得QPainter对象的视图矩形区域
QSize size = img.size(); //获得图像的大小
/* 按照图形的比例大小重新设置视图矩形区域 */
size.scale(rect.size(),Qt::KeepAspectRatio);
painter.setViewport(rect.x(),rect.y(),size.width(),size.height());
painter.setWindow(img.rect()); //设置QPainter窗口大小为图像的大小
painter.drawImage(0,0,img); //打印图像
}
}
void ImgProcessor::ShowZoomIn()
{
if(img.isNull()) //有效性判断
return;
QMatrix martix; //声明一个QMatrix类的实例
martix.scale(2,2); //(a)
img = img.transformed(martix);
//重新设置显示图形
showWidget->imageLabel->setPixmap(QPixmap::fromImage(img));
}
void ImgProcessor::ShowZoomOut()
{
if(img.isNull())
return;
QMatrix matrix;
matrix.scale(0.5,0.5); //(a)
img = img.transformed(matrix);
showWidget->imageLabel->setPixmap(QPixmap::fromImage(img));
}
void ImgProcessor::ShowRotate90()
{
if(img.isNull())
return;
QMatrix matrix;
matrix.rotate(90);
img = img.transformed(matrix);
showWidget->imageLabel->setPixmap(QPixmap::fromImage(img));
}
void ImgProcessor::ShowRotate180()
{
if(img.isNull())
return;
QMatrix matrix;
matrix.rotate(180);
img = img.transformed(matrix);
showWidget->imageLabel->setPixmap(QPixmap::fromImage(img));
}
void ImgProcessor::ShowRotate270()
{
if(img.isNull())
return;
QMatrix matrix;
matrix.rotate(270);
img = img.transformed(matrix);
showWidget->imageLabel->setPixmap(QPixmap::fromImage(img));
}
void ImgProcessor::ShowMirrorVertical()
{
if(img.isNull())
return;
img=img.mirrored(false,true);
showWidget->imageLabel->setPixmap(QPixmap::fromImage(img));
}
void ImgProcessor::ShowMirrorHorizontal()
{
if(img.isNull())
return;
img=img.mirrored(true,false);
showWidget->imageLabel->setPixmap(QPixmap::fromImage(img));
}
void ImgProcessor::ShowFontComboBox(QString comboStr) //设置字体
{
QTextCharFormat fmt; //创建一个QTextCharFormat对象
fmt.setFontFamily(comboStr); //选择的字体名称设置给QTextCharFormat对象
mergeFormat(fmt); //将新的格式应用到光标选区内的字符
}
void ImgProcessor::mergeFormat(QTextCharFormat format)
{
QTextCursor cursor =showWidget->text->textCursor();
//获得编辑框中的光标
if(!cursor.hasSelection()) //(a)
cursor.select(QTextCursor::WordUnderCursor);
cursor.mergeCharFormat(format); //(b)
showWidget->text->mergeCurrentCharFormat(format); //(c)
}
void ImgProcessor::ShowSizeSpinBox(QString spinValue) //设置字号
{
QTextCharFormat fmt;
fmt.setFontPointSize(spinValue.toFloat());
showWidget->text->mergeCurrentCharFormat(fmt);
}
void ImgProcessor::ShowBoldBtn() //设置文字显示加粗
{
QTextCharFormat fmt;
fmt.setFontWeight(boldBtn->isChecked()?QFont::Bold:QFont::Normal);
showWidget->text->mergeCurrentCharFormat(fmt);
}
void ImgProcessor::ShowItalicBtn() //设置文字显示斜体
{
QTextCharFormat fmt;
fmt.setFontItalic(italicBtn->isChecked());
showWidget->text->mergeCurrentCharFormat(fmt);
}
void ImgProcessor::ShowUnderlineBtn() //设置文字加下画线
{
QTextCharFormat fmt;
fmt.setFontUnderline(underlineBtn->isChecked());
showWidget->text->mergeCurrentCharFormat(fmt);
}
void ImgProcessor::ShowColorBtn() //设置文字颜色
{
QColor color=QColorDialog::getColor(Qt::red,this); //(a)
if(color.isValid())
{
QTextCharFormat fmt;
fmt.setForeground(color);
showWidget->text->mergeCurrentCharFormat(fmt);
}
}
void ImgProcessor::ShowCurrentFormatChanged(const QTextCharFormat &fmt)
{
fontComboBox->setCurrentIndex(fontComboBox->findText(fmt.fontFamily()));
sizeComboBox->setCurrentIndex(sizeComboBox->findText(QString::number(fmt.fontPointSize())));
boldBtn->setChecked(fmt.font().bold());
italicBtn->setChecked(fmt.fontItalic());
underlineBtn->setChecked(fmt.fontUnderline());
}
void ImgProcessor::ShowAlignment(QAction *act)
{
if(act==leftAction)
showWidget->text->setAlignment(Qt::AlignLeft);
if(act==rightAction)
showWidget->text->setAlignment(Qt::AlignRight);
if(act==centerAction)
showWidget->text->setAlignment(Qt::AlignCenter);
if(act==justifyAction)
showWidget->text->setAlignment(Qt::AlignJustify);
}
void ImgProcessor::ShowCursorPositionChanged()
{
if(showWidget->text->alignment()==Qt::AlignLeft)
leftAction->setChecked(true);
if(showWidget->text->alignment()==Qt::AlignRight)
rightAction->setChecked(true);
if(showWidget->text->alignment()==Qt::AlignCenter)
centerAction->setChecked(true);
if(showWidget->text->alignment()==Qt::AlignJustify)
justifyAction->setChecked(true);
}
void ImgProcessor::ShowList(int index)
{
//获得编辑框的QTextCursor对象指针
QTextCursor cursor=showWidget->text->textCursor();
if(index!=0)
{
QTextListFormat::Style style=QTextListFormat::ListDisc;//(a)
switch(index) //设置style属性值
{
default:
case 1:
style=QTextListFormat::ListDisc; break;
case 2:
style=QTextListFormat::ListCircle; break;
case 3:
style=QTextListFormat::ListSquare; break;
case 4:
style=QTextListFormat::ListDecimal; break;
case 5:
style=QTextListFormat::ListLowerAlpha; break;
case 6:
style=QTextListFormat::ListUpperAlpha; break;
case 7:
style=QTextListFormat::ListLowerRoman; break;
case 8:
style=QTextListFormat::ListUpperRoman; break;
}
/* 设置缩进值 */ //(b)
cursor.beginEditBlock();
QTextBlockFormat blockFmt=cursor.blockFormat();
QTextListFormat listFmt;
if(cursor.currentList())
{
listFmt= cursor.currentList()->format();
}
else
{
listFmt.setIndent(blockFmt.indent()+1);
blockFmt.setIndent(0);
cursor.setBlockFormat(blockFmt);
}
listFmt.setStyle(style);
cursor.createList(listFmt);
cursor.endEditBlock();
}
else
{
QTextBlockFormat bfmt;
bfmt.setObjectIndex(-1);
cursor.mergeBlockFormat(bfmt);
}
}
ImgProcessor::~ImgProcessor()
{
}
4.showwidget.h
#ifndef SHOWWIDGET_H
#define SHOWWIDGET_H
#include <QWidget>
#include <QLabel>
#include <QTextEdit>
#include <QImage>
class ShowWidget : public QWidget
{
Q_OBJECT
public:
explicit ShowWidget(QWidget *parent = 0);
QImage img;
QLabel *imageLabel;
QTextEdit *text;
signals:
public slots:
};
#endif // SHOWWIDGET_H
5.showwidget.cpp
#include "showwidget.h"
#include <QHBoxLayout>
ShowWidget::ShowWidget(QWidget *parent) : QWidget(parent)
{
imageLabel =new QLabel;
imageLabel->setScaledContents(true);
text =new QTextEdit;
QHBoxLayout *mainLayout =new QHBoxLayout(this);
mainLayout->addWidget(imageLabel);
mainLayout->addWidget(text);
}
本文介绍了一个集文本编辑、图片处理及格式调整于一体的综合编辑工具。该工具支持多种文件操作,如打开、新建、打印文本和图像;具备丰富的编辑功能,包括字体选择、字号调整、文字加粗、斜体、下划线及颜色更改;并提供了图片的放大缩小、旋转及镜像功能。此外,还实现了撤销与重做、列表样式设置等高级编辑特性。
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