From e5bb24ba35bb8df011542203e42f362aa196e56b Mon Sep 17 00:00:00 2001
From: tobiglaser <76131623+tobiglaser@users.noreply.github.com>
Date: Tue, 14 Jun 2022 21:33:57 +0200
Subject: [PATCH] add ModelViewList example
---
CMakeLists.txt | 5 ++-
ModelViewList/CMakeLists.txt | 63 ++++++++++++++++++++++++++++++++++++
ModelViewList/control.cpp | 36 +++++++++++++++++++++
ModelViewList/control.h | 28 ++++++++++++++++
ModelViewList/main.cpp | 17 ++++++++++
ModelViewList/mainwindow.cpp | 30 +++++++++++++++++
ModelViewList/mainwindow.h | 22 +++++++++++++
ModelViewList/model.cpp | 19 +++++++++++
ModelViewList/model.h | 26 +++++++++++++++
ModelViewList/myListItem.h | 16 +++++++++
10 files changed, 261 insertions(+), 1 deletion(-)
create mode 100644 ModelViewList/CMakeLists.txt
create mode 100644 ModelViewList/control.cpp
create mode 100644 ModelViewList/control.h
create mode 100644 ModelViewList/main.cpp
create mode 100644 ModelViewList/mainwindow.cpp
create mode 100644 ModelViewList/mainwindow.h
create mode 100644 ModelViewList/model.cpp
create mode 100644 ModelViewList/model.h
create mode 100644 ModelViewList/myListItem.h
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3c85bf1..2253d46 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,7 @@
cmake_minimum_required(VERSION 3.5)
+project(qt-examples)
+
add_subdirectory(Counter)
-add_subdirectory(Text2Console)
\ No newline at end of file
+add_subdirectory(Text2Console)
+add_subdirectory(ModelViewList)
\ No newline at end of file
diff --git a/ModelViewList/CMakeLists.txt b/ModelViewList/CMakeLists.txt
new file mode 100644
index 0000000..6bcc62e
--- /dev/null
+++ b/ModelViewList/CMakeLists.txt
@@ -0,0 +1,63 @@
+cmake_minimum_required(VERSION 3.5)
+
+project(ModelViewList VERSION 0.1 LANGUAGES CXX)
+
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+set(CMAKE_AUTOUIC ON)
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTORCC ON)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets)
+find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Widgets)
+
+set(PROJECT_SOURCES
+ main.cpp
+ mainwindow.cpp
+ mainwindow.h
+ model.h
+ model.cpp
+ control.h
+ control.cpp
+ myListItem.h
+)
+
+if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
+ qt_add_executable(ModelViewList
+ MANUAL_FINALIZATION
+ ${PROJECT_SOURCES}
+ )
+# Define target properties for Android with Qt 6 as:
+# set_property(TARGET Text2Console APPEND PROPERTY QT_ANDROID_PACKAGE_SOURCE_DIR
+# ${CMAKE_CURRENT_SOURCE_DIR}/android)
+# For more information, see https://doc.qt.io/qt-6/qt-add-executable.html#target-creation
+else()
+ if(ANDROID)
+ add_library(ModelViewList SHARED
+ ${PROJECT_SOURCES}
+ )
+# Define properties for Android with Qt 5 after find_package() calls as:
+# set(ANDROID_PACKAGE_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/android")
+ else()
+ add_executable(ModelViewList
+ ${PROJECT_SOURCES}
+ )
+ endif()
+endif()
+
+target_link_libraries(ModelViewList PRIVATE Qt${QT_VERSION_MAJOR}::Widgets)
+
+set_target_properties(ModelViewList PROPERTIES
+ MACOSX_BUNDLE_GUI_IDENTIFIER my.example.com
+ MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
+ MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
+ MACOSX_BUNDLE TRUE
+ WIN32_EXECUTABLE TRUE
+)
+
+if(QT_VERSION_MAJOR EQUAL 6)
+ qt_finalize_executable(ModelViewList)
+endif()
diff --git a/ModelViewList/control.cpp b/ModelViewList/control.cpp
new file mode 100644
index 0000000..9a92dd3
--- /dev/null
+++ b/ModelViewList/control.cpp
@@ -0,0 +1,36 @@
+#include "control.h"
+#include "myListItem.h"
+
+Control::Control(Model &model, MainWindow &view) : model(model), view(view)
+{
+ connect(view.qAddButton, SIGNAL(clicked()), this, SLOT(onAddButton()));
+ connect(view.qLineEdit, SIGNAL(returnPressed()), this, SLOT(onAddButton()));
+ connect(view.qRemButton, SIGNAL(clicked()), this, SLOT(onRemButton()));
+
+ connect(&model, SIGNAL(listChanged()), this, SLOT(onListChange()));
+}
+
+void Control::onAddButton()
+{
+ std::string s = view.qLineEdit->text().toStdString();
+ view.qLineEdit->clear();
+ if (!s.empty())
+ model.addNewItem(s);
+}
+
+void Control::onRemButton()
+{
+ uint index = view.qList->currentRow();
+ model.removeItem(index);
+}
+
+void Control::onListChange()
+{
+ auto vec = model.getVec();
+ view.qList->clear(); // This could use some more precision, but whatever.
+ for (auto &&i : vec)
+ {
+ myListItem *li = new myListItem(i);
+ view.qList->addItem(li);
+ }
+}
\ No newline at end of file
diff --git a/ModelViewList/control.h b/ModelViewList/control.h
new file mode 100644
index 0000000..356e179
--- /dev/null
+++ b/ModelViewList/control.h
@@ -0,0 +1,28 @@
+#ifndef CONTROL_H
+#define CONTROL_H
+
+#include <QObject>
+#include "model.h"
+#include "mainwindow.h"
+
+
+class Control : public QObject
+{
+ Q_OBJECT
+
+private:
+ MainWindow &view;
+ Model &model;
+
+
+public:
+ Control(Model &model, MainWindow &view);
+
+public slots:
+ void onAddButton();
+ void onRemButton();
+
+ void onListChange();
+};
+
+#endif //CONTROL_H
\ No newline at end of file
diff --git a/ModelViewList/main.cpp b/ModelViewList/main.cpp
new file mode 100644
index 0000000..828e7dd
--- /dev/null
+++ b/ModelViewList/main.cpp
@@ -0,0 +1,17 @@
+#include <QApplication>
+
+#include "mainwindow.h"
+#include "model.h"
+#include "control.h"
+
+
+int main(int argc, char *argv[])
+{
+ QApplication a(argc, argv);
+ Model model;
+ MainWindow view;
+ Control control(model, view);
+
+ view.show();
+ return a.exec();
+}
\ No newline at end of file
diff --git a/ModelViewList/mainwindow.cpp b/ModelViewList/mainwindow.cpp
new file mode 100644
index 0000000..44088c8
--- /dev/null
+++ b/ModelViewList/mainwindow.cpp
@@ -0,0 +1,30 @@
+#include <QBoxLayout>
+#include <QListWidget>
+#include "mainwindow.h"
+
+MainWindow::MainWindow(QWidget *parent)
+ : QMainWindow(parent)
+{
+ //general
+ setWindowTitle("ModelViewList");
+
+ // Layout
+ QBoxLayout *layout = new QBoxLayout(QBoxLayout::Direction::TopToBottom);
+ QWidget *widget = new QWidget;
+ widget->setLayout(layout);
+ setCentralWidget(widget); // special for MainWindow
+
+ //TextField
+ qLineEdit = new QLineEdit();
+ layout->addWidget(qLineEdit);
+
+ // Buttons
+ qAddButton = new QPushButton("Add");
+ layout->addWidget(qAddButton);
+ qRemButton = new QPushButton("Remove");
+ layout->addWidget(qRemButton);
+
+ // List
+ qList = new QListWidget();
+ layout->addWidget(qList);
+}
\ No newline at end of file
diff --git a/ModelViewList/mainwindow.h b/ModelViewList/mainwindow.h
new file mode 100644
index 0000000..a59541d
--- /dev/null
+++ b/ModelViewList/mainwindow.h
@@ -0,0 +1,22 @@
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+#include <QLineEdit>
+#include <QPushButton>
+#include <QListWidget>
+
+class MainWindow : public QMainWindow
+{
+ Q_OBJECT
+
+public:
+ QLineEdit *qLineEdit;
+ QPushButton *qAddButton;
+ QPushButton *qRemButton;
+ QListWidget *qList;
+
+ MainWindow(QWidget *parent = nullptr);
+};
+
+#endif // MAINWINDOW_H
diff --git a/ModelViewList/model.cpp b/ModelViewList/model.cpp
new file mode 100644
index 0000000..6a62359
--- /dev/null
+++ b/ModelViewList/model.cpp
@@ -0,0 +1,19 @@
+#include "model.h"
+
+
+void Model::addNewItem(std::string s)
+{
+ vec.emplace_back(s);
+ emit(listChanged());
+}
+
+void Model::removeItem(uint index)
+{
+ if (index < vec.size())
+ {
+ std::vector<std::string>::iterator it = vec.begin();
+ std::advance(it, index);
+ vec.erase(it);
+ emit(listChanged());
+ }
+}
\ No newline at end of file
diff --git a/ModelViewList/model.h b/ModelViewList/model.h
new file mode 100644
index 0000000..5948850
--- /dev/null
+++ b/ModelViewList/model.h
@@ -0,0 +1,26 @@
+#ifndef MODEL_H
+#define MODEL_H
+
+#include <vector>
+#include <iterator>
+#include <string>
+#include <QObject>
+
+class Model : public QObject
+{
+ Q_OBJECT
+
+private:
+ std::vector<std::string> vec;
+
+public:
+ std::vector<std::string> getVec() { return vec; }
+
+ void addNewItem(std::string);
+ void removeItem(uint);
+
+signals:
+ void listChanged();
+};
+
+#endif //MODEL_H
\ No newline at end of file
diff --git a/ModelViewList/myListItem.h b/ModelViewList/myListItem.h
new file mode 100644
index 0000000..f1650c2
--- /dev/null
+++ b/ModelViewList/myListItem.h
@@ -0,0 +1,16 @@
+#ifndef MYLISTITEM_H
+#define MYLISTITEM_H
+
+#include <QListWidgetItem>
+#include <string>
+
+class myListItem : public QListWidgetItem
+{
+public:
+ myListItem(std::string &text)
+ {
+ setText(text.c_str());
+ };
+};
+
+#endif //MYLISTITEM_H
\ No newline at end of file
--
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