Qt/Images/RubberBand
From ProgrammingExamples
< Qt
main.cpp
#include <QApplication> #include "form.h" int main(int argc, char *argv[]) { QApplication app(argc, argv); Form form; form.show(); return app.exec(); }
form.h
#ifndef FORM_H #define FORM_H #include "ui_form.h" class Form : public QWidget, private Ui::Form { Q_OBJECT public: Form(QWidget *parent = 0); }; #endif
form.cpp
#include <QtGui> #include <QImage> #include <QRubberBand> #include "form.h" #include <iostream> Form::Form(QWidget *parent) : QWidget(parent) { setupUi(this); QGraphicsScene* scene = new QGraphicsScene(); //QRubberBand* rubberBand = new QRubberBand(QRubberBand::Rectangle, scene); //QRubberBand* rubberBand = new QRubberBand(QRubberBand::Rectangle); QRubberBand* rubberBand = new QRubberBand(QRubberBand::Rectangle, this->graphicsView); QPalette palette; palette.setBrush(QPalette::Foreground, QBrush(Qt::green)); palette.setBrush(QPalette::Base, QBrush(Qt::red)); rubberBand->setPalette(palette); rubberBand->resize(30, 30); //scene->addItem(rubberBand); this->graphicsView->setScene(scene); //this->graphicsView->setDragMode(QGraphicsView::RubberBandDrag); this->graphicsView->show(); }
form.ui
<?xml version="1.0" encoding="UTF-8"?> <ui version="4.0"> <class>Form</class> <widget class="QWidget" name="Form"> <property name="geometry"> <rect> <x>0</x> <y>0</y> <width>812</width> <height>565</height> </rect> </property> <property name="windowTitle"> <string>Form</string> </property> <widget class="QPushButton" name="btnOpen"> <property name="geometry"> <rect> <x>20</x> <y>10</y> <width>121</width> <height>41</height> </rect> </property> <property name="text"> <string>Open Image</string> </property> </widget> <widget class="QGraphicsView" name="graphicsView"> <property name="geometry"> <rect> <x>80</x> <y>80</y> <width>521</width> <height>361</height> </rect> </property> <property name="verticalScrollBarPolicy"> <enum>Qt::ScrollBarAlwaysOff</enum> </property> <property name="horizontalScrollBarPolicy"> <enum>Qt::ScrollBarAlwaysOff</enum> </property> </widget> </widget> <resources/> <connections/> </ui>
CMakeLists.txt
cmake_minimum_required(VERSION 2.6) PROJECT(Rubberband) FIND_PACKAGE(Qt4 REQUIRED) INCLUDE(${QT_USE_FILE}) QT4_WRAP_UI(UISrcs form.ui) QT4_WRAP_CPP(MOCSrcs form.h) include_directories(${include_directories} ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR}) ADD_EXECUTABLE(Rubberband main.cpp form.h form.cpp ${MOCSrcs} ${UISrcs}) TARGET_LINK_LIBRARIES(Rubberband ${QT_LIBRARIES})