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andrewbytecoderandrewbytecoder
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添加pinter相关代码
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7 files changed

+213
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‎qt_I18N/qt_I18N.pro.user

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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE QtCreatorProject>
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<!-- Written by QtCreator 4.9.1, 2023-09-29T11:06:43. -->
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<!-- Written by QtCreator 4.9.1, 2023-09-29T12:01:34. -->
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<qtcreator>
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<data>
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<variable>EnvironmentId</variable>
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</valuelist>
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<value type="int" key="PE.EnvironmentAspect.Base">2</value>
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<valuelist type="QVariantList" key="PE.EnvironmentAspect.Changes"/>
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<value type="QString" key="ProjectExplorer.CustomExecutableRunConfiguration.Executable"></value>
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<value type="QString" key="ProjectExplorer.ProjectConfiguration.DefaultDisplayName">Custom Executable</value>
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<value type="QString" key="ProjectExplorer.ProjectConfiguration.DefaultDisplayName">qt_I18N</value>
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<value type="QString" key="ProjectExplorer.ProjectConfiguration.DisplayName"></value>
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<value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">ProjectExplorer.CustomExecutableRunConfiguration</value>
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<value type="QString" key="ProjectExplorer.ProjectConfiguration.Id">Qt4ProjectManager.Qt4RunConfiguration:/work/QT_examples/qt_I18N/qt_I18N.pro</value>
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<value type="QString" key="RunConfiguration.Arguments"></value>
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<value type="uint" key="RunConfiguration.QmlDebugServerPort">3768</value>
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<value type="bool" key="RunConfiguration.UseCppDebugger">false</value>
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<value type="bool" key="RunConfiguration.UseCppDebuggerAuto">true</value>
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<value type="bool" key="RunConfiguration.UseLibrarySearchPath">true</value>
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<value type="bool" key="RunConfiguration.UseMultiProcess">false</value>
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<value type="bool" key="RunConfiguration.UseQmlDebugger">false</value>
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<value type="bool" key="RunConfiguration.UseQmlDebuggerAuto">true</value>
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<value type="QString" key="RunConfiguration.WorkingDirectory"></value>
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<value type="QString" key="RunConfiguration.WorkingDirectory.default"></value>
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<value type="QString" key="RunConfiguration.WorkingDirectory.default">/work/QT_examples/build-qt_I18N-unknown-Debug</value>
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</valuemap>
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<value type="int" key="ProjectExplorer.Target.RunConfigurationCount">1</value>
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</valuemap>

‎qt_painter/main.cpp

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#include "mainwindow.h"
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#include <QApplication>
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/*
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* 绘图主要依赖QPainter QPaintDevice QPaintEngine三个类
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* QPainter :用来执行绘图操作
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* QPaintDevice 提供绘图设备，是一个二维空间的抽象
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* QPaintEngine 提供在不同设备上绘图能力，处理创建自定义绘图类型一般用不到该类
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*
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* 这里主要说2D绘图的相关的知识
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*
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*
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*
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*/
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int main(int argc, char *argv[])
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{
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QApplication a(argc, argv);
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MainWindow w;
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w.show();
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return a.exec();
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}

‎qt_painter/mainwindow.cpp

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#include "mainwindow.h"
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#include "ui_mainwindow.h"
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#include <QPainter>
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#include <QToolTip>
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#include <QMouseEvent>
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#include <QTimer>
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MainWindow::MainWindow(QWidget *parent) :
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QMainWindow(parent),
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ui(new Ui::MainWindow)
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{
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ui->setupUi(this);
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setMouseTracking(true);
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QTimer *timer = new QTimer(this);
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connect(timer, SIGNAL(timeout()), this, SLOT(update()));
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timer->start(1000);
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angle = 0;
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}
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MainWindow::~MainWindow()
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{
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delete ui;
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}
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void MainWindow::paintEvent(QPaintEvent *)
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{
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angle += 10;
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if(angle == 360)
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angle = 0;
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int side = qMin(width(), height());
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QPainter painter(this);
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painter.setRenderHint(QPainter::Antialiasing);
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QTransform transform;
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transform.translate(width()/2, height()/2);
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transform.scale(side/300.0, side/300.0);
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transform.rotate(angle);
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painter.setWorldTransform(transform);
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painter.drawEllipse(-120, -120, 240, 240);
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painter.drawLine(0, 0, 100, 0);
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}
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void MainWindow::mouseMoveEvent(QMouseEvent *event)
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{
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QString pos = QString("%1,%2").arg(event->pos().x()).arg(event->pos().y());
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QToolTip::showText(event->globalPos(), pos, this);
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}
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‎qt_painter/mainwindow.h

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#ifndef MAINWINDOW_H
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#define MAINWINDOW_H
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#include <QMainWindow>
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namespace Ui {
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class MainWindow;
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}
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class MainWindow : public QMainWindow
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{
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Q_OBJECT
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public:
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explicit MainWindow(QWidget *parent = nullptr);
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~MainWindow();
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private:
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Ui::MainWindow *ui;
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QTimer *timer;
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int angle;
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protected:
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void paintEvent(QPaintEvent *);
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void mouseMoveEvent(QMouseEvent *event);
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};
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#endif // MAINWINDOW_H

‎qt_painter/mainwindow.ui

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<ui version="4.0">
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<class>MainWindow</class>
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<widget class="QMainWindow" name="MainWindow" >
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<property name="geometry" >
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<rect>
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<x>0</x>
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<y>0</y>
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<width>400</width>
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<height>300</height>
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</rect>
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</property>
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<property name="windowTitle" >
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<string>MainWindow</string>
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</property>
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<widget class="QMenuBar" name="menuBar" />
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<widget class="QToolBar" name="mainToolBar" />
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<widget class="QWidget" name="centralWidget" />
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<widget class="QStatusBar" name="statusBar" />
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</widget>
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<layoutDefault spacing="6" margin="11" />
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<pixmapfunction></pixmapfunction>
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<resources/>
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<connections/>
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</ui>

‎qt_painter/qt_painter.pro

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#-------------------------------------------------
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#
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# Project created by QtCreator 2023-09-30T09:11:13
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#
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#-------------------------------------------------
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QT += core gui
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greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
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TARGET = qt_painter
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TEMPLATE = app
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# The following define makes your compiler emit warnings if you use
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# any feature of Qt which has been marked as deprecated (the exact warnings
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# depend on your compiler). Please consult the documentation of the
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# deprecated API in order to know how to port your code away from it.
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DEFINES += QT_DEPRECATED_WARNINGS
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# You can also make your code fail to compile if you use deprecated APIs.
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# In order to do so, uncomment the following line.
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# You can also select to disable deprecated APIs only up to a certain version of Qt.
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#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
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CONFIG += c++11
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SOURCES += \
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main.cpp \
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mainwindow.cpp
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HEADERS += \
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mainwindow.h
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FORMS += \
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mainwindow.ui
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# Default rules for deployment.
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qnx: target.path = /tmp/$${TARGET}/bin
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else: unix:!android: target.path = /opt/$${TARGET}/bin
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!isEmpty(target.path): INSTALLS += target

‎qt_whatisit/mainwindow.ui

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<?xml version="1.0" encoding="UTF-8"?>
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<ui version="4.0">
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<class>MainWindow</class>
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<widget class="QMainWindow" name="MainWindow" >
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<property name="geometry" >
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<widget class="QMainWindow" name="MainWindow">
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<property name="geometry">
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<rect>
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<x>0</x>
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<y>0</y>
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<width>400</width>
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<height>300</height>
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</rect>
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</property>
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<property name="windowTitle" >
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<property name="windowTitle">
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<string>MainWindow</string>
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</property>
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<widget class="QMenuBar" name="menuBar" />
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<widget class="QToolBar" name="mainToolBar" />
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<widget class="QWidget" name="centralWidget" />
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<widget class="QStatusBar" name="statusBar" />
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<widget class="QWidget" name="centralWidget"/>
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<widget class="QMenuBar" name="menuBar">
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<property name="geometry">
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<rect>
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<x>0</x>
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<y>0</y>
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<width>400</width>
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<height>28</height>
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</rect>
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</property>
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<widget class="QMenu" name="menu_File">
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<property name="title">
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<string>&amp;File</string>
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</property>
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<addaction name="actionNew"/>
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<addaction name="actionOPen"/>
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</widget>
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<addaction name="menu_File"/>
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</widget>
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<widget class="QToolBar" name="mainToolBar">
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<attribute name="toolBarArea">
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<enum>TopToolBarArea</enum>
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</attribute>
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<attribute name="toolBarBreak">
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<bool>false</bool>
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</attribute>
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</widget>
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<widget class="QStatusBar" name="statusBar"/>
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<action name="actionNew">
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<property name="text">
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<string>New</string>
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</property>
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</action>
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<action name="actionOPen">
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<property name="text">
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<string>OPen</string>
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</property>
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</action>
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</widget>
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<layoutDefault spacing="6" margin="11" />
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<pixmapfunction></pixmapfunction>
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<layoutdefault spacing="6" margin="11"/>
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<resources/>
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<connections/>
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</ui>

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