Difference between revisions of "Qt/Events/Resize"
From ProgrammingExamples
< Qt
Daviddoria (Talk | contribs) (Created page with '==main.cpp== <source lang="cpp"> #include <QApplication> #include "form.h" int main(int argc, char *argv[]) { QApplication app(argc, argv); Form form; form.sho…') |
(No difference)
|
Revision as of 09:58, 12 September 2012
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
</source>
- ifndef FORM_H
- define FORM_H
- include "ui_form.h"
class QGraphicsPixmapItem;
class Form : public QWidget, public Ui::Form { Q_OBJECT
public:
Form(QWidget *parent = 0);
protected:
void resizeEvent ( QResizeEvent * event );
QGraphicsPixmapItem* BlackItem;
};
- endif
</source>
form.cpp
#include <QtGui> #include <iostream> #include "form.h" Form::Form(QWidget *parent) : QWidget(parent) { this->setupUi(this); QGraphicsScene* scene = new QGraphicsScene; //// Add a qpixmap to the scene. QPixmap pixmap(40, 40); QColor black(0,0,0); pixmap.fill(black); this->BlackItem = scene->addPixmap(pixmap); //this->graphicsView->fitInView(blackItem); //Add another qpixmap to the scene. Drag one of them around and watch the scene change. QPixmap pixmap2(30, 30); QColor red(255,0,0); pixmap2.fill(red); QGraphicsPixmapItem * redItem = scene->addPixmap(pixmap2); redItem->setFlag(QGraphicsItem::ItemIsMovable); scene->setSceneRect(pixmap.rect()); this->graphicsView->setScene(scene); } void Form::resizeEvent ( QResizeEvent * event ) { std::cout << "ResizeEvent" << std::endl; this->graphicsView->fitInView(this->BlackItem); }
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>312</width> <height>243</height> </rect> </property> <property name="windowTitle"> <string>Form</string> </property> <layout class="QGridLayout" name="gridLayout"> <item row="0" column="0"> <widget class="QGraphicsView" name="graphicsView"> <property name="backgroundBrush"> <brush brushstyle="NoBrush"> <color alpha="255"> <red>0</red> <green>0</green> <blue>0</blue> </color> </brush> </property> </widget> </item> </layout> </widget> <resources/> <connections/> </ui>
CMakeLists.txt
cmake_minimum_required(VERSION 2.6) PROJECT(ResizeEvent) 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(ResizeEvent main.cpp form.h form.cpp ${MOCSrcs} ${UISrcs}) TARGET_LINK_LIBRARIES(ResizeEvent ${QT_LIBRARIES})