qtforum.de

Code: Alles auswählen

button.resize(newSize);

Code: Alles auswählen

public class ButtonBar extends QPushButton 

        private int width;
	private int height;
	private int x;
	private int y;
	private int placedVotesPerson;
	private int selectionID;
	private int pollID;
	private int place;
	private BarChart parent; [public class BarChart extends QWidget]

Code: Alles auswählen

/**
	 * Updates color and size of bar
	 */
	private void updateColorAndSize() {
		setGeometry(x, y + (place * 50), width, height);
		resize(width, height);

		// setFixedSize(width, height);
		/** set color of button */
		if (Data.getDataInstance().getListPoll(pollID).getHead()
				.isLimitValternative()
				&& DataManager.sumVotesPerAlternative(pollID, selectionID,
						Data.listType) >= Data.getDataInstance().getListPoll(
						pollID).getSelection(selectionID).getMaxPoints()) {
			// max number of votes per alternative is set and max number of
			// votes for this alternative reached
			setStyleSheet("background-color: red"); //$NON-NLS-1$
		} else if (Data.getDataInstance().getListPoll(pollID).getHead()
				.isLimitValternative()) {
			// max number of votes per alternative is set and max number of
			// votes for this alternative is not reached
			setStyleSheet("background-color: rgb(50,205,50)"); //$NON-NLS-1$
		} else if (placedVotesPerson == 0) {
			// limit for alternatives is not set and user did not voted for
			// alternative
			setStyleSheet("background-color: rgb(250,160,50)"); //$NON-NLS-1$
		} else if (placedVotesPerson > 0) {
			// limit for alternative is noet set and user voted for alternative
			setStyleSheet("background-color: rgb(30,144,255)"); //$NON-NLS-1$
		}
		if (data.getListPoll(pollID).getMembers().get(
				data.getListPoll(pollID).getMember(data.getUser().getUserID()))
				.getPoints() == -1)
			setStyleSheet("background-color: rgb(26,26,26)");

		update();
		updateGeometry();
	}

Code: Alles auswählen

/**
	 * draw bar
	 */
	@Override
	public void drawBar(QPainter painter) {
		// Draw Name of Alternative
		painter.setFont(new QFont("arial", 10)); //$NON-NLS-1$
		painter.setPen(QColor.black);
		painter.drawText(x + 5, y - 2 + (place * 50), getDescription());

		painter.drawRoundedRect(x, y + (place * 50) /* +(i*50) */, width,
				height, 10.0, 1.3);

		updateColorAndSize();

		// Draw Sum Votes for Alternative
		painter.setPen(QColor.darkCyan);
		painter.drawText(x + width + 5, y + height - 2 + (place * 50),
				"" + getSumVotes()); //$NON-NLS-1$

		parent.update();
		parent.updateGeometry();
	}

Code: Alles auswählen

#include <QWidget>
#include <QPushButton>
#include <QSlider>
#include <QVBoxLayout>
#include <QHBoxLayout>

class Widget : public QWidget
{
    Q_OBJECT
    QPushButton *btn;
public:
    Widget() {
        QWidget* view = new QWidget(this);
        
        btn = new QPushButton("Resize me!", view);
        
        QSlider *heightSlider = new QSlider(Qt::Horizontal, this);
        heightSlider->setMinimum(btn->height());
        heightSlider->setMaximum(btn->height()*4);

        QSlider *widthSlider = new QSlider(Qt::Horizontal, this);
        widthSlider->setMinimum(btn->width());
        widthSlider->setMaximum(btn->width()*4);
        
        QHBoxLayout* sliderLayout = new QHBoxLayout;
        sliderLayout->addWidget(heightSlider);
        sliderLayout->addWidget(widthSlider);
        
        QVBoxLayout *mainLayout = new QVBoxLayout(this);        
        mainLayout->addWidget(view);
        mainLayout->addLayout(sliderLayout);
        
        connect(heightSlider, SIGNAL(sliderMoved(int)), this, SLOT(changeHeight(int)));
        connect(widthSlider, SIGNAL(sliderMoved(int)), this, SLOT(changeWidth(int)));
        
        resize(500, 200);
    }
    
public slots:
    void changeHeight(int val) {
        btn->resize(btn->width(), val);
    }
    void changeWidth(int val) {
        btn->resize(val, btn->height());
    }
};