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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 "UrlHistoryBox.h"
#include "Canvas/Canvas.h"
#include "Shared/GlowEffectWidget.h"
#include "Shared/PixmapButton.h"
#include "FotowallFile.h"
#include <QHBoxLayout>
#include <QFile>
#include <QMenu>
#include <QTimer>
#include <QVariant>
UrlHistoryBox::UrlHistoryBox(const QList<QUrl> &urls, QWidget *parent)
: GroupBoxWidget(parent)
, m_previewIndex(0)
{
// create this layout
QHBoxLayout * lay = new QHBoxLayout(this);
lay->setContentsMargins(2, 0, 0, 0);
lay->setSpacing(0);
setLayout(lay);
// set initial urls, if given
if (!urls.isEmpty())
changeUrls(urls, true);
}
UrlHistoryBox::~UrlHistoryBox()
{
qDeleteAll(m_entries);
m_entries.clear();
}
void UrlHistoryBox::changeUrls(const QList<QUrl> & urls, bool delayPreview)
{
// remove previous icons, if any
qDeleteAll(m_entries);
m_entries.clear();
if (urls.isEmpty())
return;
// add buttons
for (int i = 0; i < qMin(5, urls.size()); i++) {
const QUrl & url = urls[i];
PixmapButton * button = new PixmapButton(this);
connect(button, SIGNAL(clicked()), this, SLOT(slotClicked()));
connect(button, SIGNAL(customContextMenuRequested(const QPoint &)), this, SLOT(slotContextMenu(const QPoint &)));
button->setFixedSize(QSize(64, 60));
button->setContextMenuPolicy(Qt::CustomContextMenu);
button->setProperty("url", url);
button->setHoverText(QString::number(i+1));
button->setToolTip(url.toString());
int mag = (qrand() % 7) + (qrand() % 7);
static bool dir = true; dir = !dir;
int angle = dir ? mag : -mag;
button->setProperty("angle", angle);
layout()->addWidget(button);
m_entries.append(button);
if (delayPreview) {
#if 0
QImage img(48, 48, QImage::Format_ARGB32_Premultiplied);
img.fill(0xFF808080);
button->setPixmap(prettyPixmap(img, angle));
#endif
} else
genPreview(button);
}
// start preview jobs
if (delayPreview) {
m_previewIndex = 0;
QTimer::singleShot(100, this, SLOT(slotNextPreview()));
}
}
QUrl UrlHistoryBox::urlForEntry(int index) const
{
if (index < 0 || index >= m_entries.size())
return QUrl();
return m_entries[index]->property("url").toUrl();
}
QPixmap UrlHistoryBox::prettyPixmap(const QImage & image, int angle)
{
QTransform rot;
rot.rotate(angle);
const QImage rotated = image.transformed(rot, Qt::SmoothTransformation);
const QImage shadowed = GlowEffectWidget::dropShadow(rotated, QColor(64, 64, 64), 6, 1, 1);
return QPixmap::fromImage(shadowed);
}
void UrlHistoryBox::genPreview(PixmapButton * button)
{
QUrl currentUrl = button->property("url").toUrl();
QString fwFilePath = currentUrl.toString();
// get the embedded preview
QImage previewImage = FotowallFile::embeddedPreview(fwFilePath);
// generate preview
if (previewImage.isNull()) {
Canvas * canvas = new Canvas(physicalDpiX(), physicalDpiY(), this);
if (FotowallFile::read(fwFilePath, canvas, false)) {
// render canvas, rotate, drop shadow and set
canvas->resizeAutoFit();
canvas->setEmbeddedPainting(true);
previewImage = canvas->renderedImage(QSize(48, 48), Qt::KeepAspectRatio, true);
}
delete canvas;
}
// make a pretty preview (rotated and shadowed)
if (!previewImage.isNull()) {
int angle = button->property("angle").toInt();
button->setPixmap(prettyPixmap(previewImage, angle));
}
}
void UrlHistoryBox::slotClicked()
{
emit urlClicked(sender()->property("url").toUrl());
}
void UrlHistoryBox::slotContextMenu(const QPoint & widgetPos)
{
// get data from the sender button
PixmapButton * button = static_cast<PixmapButton *>(sender());
QPoint screenPos = button->mapToGlobal(widgetPos);
QUrl fileUrl = button->property("url").toUrl();
QString fwFilePath = fileUrl.toString();
if (!QFile::exists(fwFilePath))
return;
// build menu
QMenu menu;
QAction * openAction = menu.addAction(tr("Open"));
menu.addSeparator();
QAction * removeAction = menu.addAction(tr("Remove From History"));
QMenu * fileSubMenu = menu.addMenu(tr("File"));
QAction * deleteAction = fileSubMenu->addAction(QIcon(":/data/action-delete.png"), tr("Delete File"));
// popup menu and handle actions
QAction * action = menu.exec(screenPos);
if (action == openAction) {
emit urlClicked(fileUrl);
} else if (action == removeAction) {
m_entries.removeAll(button);
button->deleteLater();
emit urlRemoved(QUrl(fwFilePath));
} else if (action == deleteAction) {
if (QFile::remove(fwFilePath)) {
m_entries.removeAll(button);
button->deleteLater();
emit urlRemoved(QUrl(fwFilePath));
} else
qWarning("UrlHistoryBox::slotContextMenu: cannot remove file");
}
}
void UrlHistoryBox::slotNextPreview()
{
if (m_previewIndex < m_entries.size()) {
PixmapButton * btn = m_entries[m_previewIndex];
genPreview(btn);
m_previewIndex++;
// start next job right after
if (m_previewIndex < m_entries.size())
QTimer::singleShot(10, this, SLOT(slotNextPreview()));
}
}
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