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/***************************************************************************
* *
* This file is part of the Fotowall project, *
* http://www.enricoros.com/opensource/fotowall *
* *
* Copyright (C) 2009 by Enrico Ros <enrico.ros@gmail.com> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "PixmapButton.h"
#include <QApplication>
#include <QPaintEvent>
#include <QPainter>
#include <QStyle>
#include <QStyleOptionFocusRect>
PixmapButton::PixmapButton(QWidget * parent)
: QAbstractButton(parent)
, m_fadeInactive(false)
, m_hovering(false)
{
m_hoverFont = QApplication::font();
m_hoverFont.setPixelSize(10);
setFixedSize(32, 32);
}
void PixmapButton::setPixmap(const QPixmap & pixmap)
{
m_fixedPixmap = pixmap;
update();
}
QPixmap PixmapButton::pixmap() const
{
return m_fixedPixmap;
}
void PixmapButton::setHoverText(const QString &text)
{
m_hoverText = text;
update();
}
QString PixmapButton::hoverText() const
{
return m_hoverText;
}
void PixmapButton::setHoverPixmap(const QPixmap & pixmap)
{
m_hoverPixmap = pixmap;
update();
}
QPixmap PixmapButton::hoverPixmap() const
{
return m_hoverPixmap;
}
void PixmapButton::setFadeInactive(bool fade)
{
if (m_fadeInactive != fade) {
m_fadeInactive = fade;
update();
}
}
bool PixmapButton::fadeInactive() const
{
return m_fadeInactive;
}
void PixmapButton::setFixedSize(const QSize & size)
{
m_fixedSize = size;
QAbstractButton::setFixedSize(m_fixedSize);
}
void PixmapButton::setFixedSize(int w, int h)
{
setFixedSize(QSize(w, h));
}
QSize PixmapButton::fixedSize() const
{
return m_fixedSize;
}
void PixmapButton::enterEvent(QEvent *)
{
m_hovering = true;
update();
}
void PixmapButton::leaveEvent(QEvent *)
{
m_hovering = false;
update();
}
void PixmapButton::paintEvent(QPaintEvent *)
{
QPainter p(this);
// draw background if checked
if (isChecked()) {
#if 0
p.fillRect(rect(), palette().color(QPalette::Button));
#else
QStyleOption opt(0);
opt.palette = palette();
opt.state = QStyle::State_Enabled | QStyle::State_Sunken;
if (m_hovering)
opt.state |= QStyle::State_MouseOver;
opt.rect = rect();
style()->drawPrimitive(QStyle::PE_PanelButtonTool, &opt, &p, this);
#endif
}
// draw background if hovering
else if (m_hovering)
p.fillRect(rect(), palette().color(QPalette::Highlight));
// draw pixmap, or placeholder
if (m_fixedPixmap.isNull()) {
#if 0
p.fillRect(rect().adjusted(2, 2, -2, -2), palette().color(QPalette::Button));
#endif
} else {
bool fade = m_fadeInactive && !isDown() && !m_hovering && !hasFocus();
if (fade)
p.setOpacity(0.4);
int offset = (isDown() | isChecked()) ? 1 : 0;
p.drawPixmap( offset + (width() - m_fixedPixmap.width()) / 2,
offset + (height() - m_fixedPixmap.height()) / 2,
m_fixedPixmap);
if (fade)
p.setOpacity(1.0);
}
// draw hover text, if any
if (!m_hoverText.isEmpty()) {
#if 1
const int h = 13;
const int w = h * m_hoverText.size();
p.setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing, true);
p.setPen(Qt::NoPen);
p.setBrush(palette().color(QPalette::Highlight));
QRectF rect(0, 0, w, h);
p.drawEllipse(rect.adjusted(0.5, 0.5, -0.5, -0.5));
p.setPen(palette().color(QPalette::HighlightedText));
p.setFont(m_hoverFont);
#ifdef Q_WS_WIN
p.drawText(rect.toRect().adjusted(0, -1, 0, -1), Qt::AlignCenter, m_hoverText);
#else
p.drawText(rect.toRect(), Qt::AlignCenter, m_hoverText);
#endif
#endif
}
// draw hover pixmap, if hovering
if (m_hovering && !m_hoverPixmap.isNull())
p.drawPixmap(width() - m_hoverPixmap.width(), height() - m_hoverPixmap.height(), m_hoverPixmap);
// draw focus, if any
if (hasFocus()) {
QStyleOptionFocusRect opt;
opt.initFrom(this);
style()->drawPrimitive(QStyle::PE_FrameFocusRect, &opt, &p, this);
}
}
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