toolbutton.cc

c++的guiQt做的开发

/** @file
 ToolButton - Class representing a single button on the toolbar
 Same as QToolButton, difference is that ToolButton also emit its ID in signal
 @author Martin Petricek
*/
#include "toolbutton.h"
#include "util.h"
#include <QIcon>
#include <QPixmap>
#include <QString>
#include <QSizePolicy>
#include <QEvent>

namespace gui {

/**
 Constructor of ToolButton
 @param icon Icon for this button
 @param tooltip Text to display as tooltip
 @param parent Parent widget
 */
ToolButton::ToolButton(const QPixmap *icon, const QString tooltip, QWidget *parent/*=0*/) : QToolButton(parent) {
 init();
 setTextLabel(tooltip);
 if (icon) {
  QIcon ico=QIcon(*icon);
  setIcon(ico);
 }
}

/**
 Constructor of ToolButton
 @param iconSet Icon set for this button
 @param tooltip Text to display as tooltip
 @param parent Parent widget
 */
ToolButton::ToolButton(const QIcon *iconSet, const QString tooltip, QWidget *parent/*=0*/) : QToolButton(parent) {
 init();
 setTextLabel(tooltip);
 if (iconSet) {
  setIcon(*iconSet);
 }
}

/**
 Common initialization function
*/
void ToolButton::init() {
 connect(this,SIGNAL(clicked()),this,SLOT(slotClicked()));
 setSizes(22);
 setSizePolicy(QSizePolicy(QSizePolicy::Fixed,QSizePolicy::Fixed));
}

/**
 Set new size of the button.
 Button is always square.
 @param newSize new size of the button
*/
void ToolButton::setSizes(int newSize) {
 bSize.setWidth(newSize);
 bSize.setHeight(newSize);
 setMinimumSize(bSize);
 setMaximumSize(bSize);
}

/** return sizehint */
QSize ToolButton::sizeHint() {
 return bSize;
}
/**
 Event handler for mouse cursor entering button.
 Sends its tooltip as help text.
 @param e Event
*/
void ToolButton::enterEvent(QEvent *e) {
 emit helpText(text());
 QToolButton::enterEvent(e);
}

/**
 Event handler for mouse cursor leaving button.
 Sends empty helptext, thus disabling it
 @param e Event
*/
void ToolButton::leaveEvent(QEvent *e) {
 emit helpText(QString::null);
 QToolButton::leaveEvent(e);
}

/** slot that will emit clicked with ID of whis button */
void ToolButton::slotClicked() {
 emit clicked(this);
}

/**
 Set label on the tool button
 @param label text
*/
void ToolButton::setTextLabel(const QString &label) {
 setText(label);
 setToolTip(label);
}

} // namespace gui