Chris@303: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@303: 
Chris@303: /*
Chris@303:     Sonic Visualiser
Chris@303:     An audio file viewer and annotation editor.
Chris@303:     Centre for Digital Music, Queen Mary, University of London.
Chris@303:     This file copyright 2007 QMUL.
Chris@303:     
Chris@303:     This program is free software; you can redistribute it and/or
Chris@303:     modify it under the terms of the GNU General Public License as
Chris@303:     published by the Free Software Foundation; either version 2 of the
Chris@303:     License, or (at your option) any later version.  See the file
Chris@303:     COPYING included with this distribution for more information.
Chris@303: */
Chris@303: 
Chris@303: #include "ImageDialog.h"
Chris@303: 
Chris@303: #include <QLineEdit>
Chris@303: #include <QGridLayout>
Chris@303: #include <QLabel>
Chris@303: #include <QDialogButtonBox>
Chris@303: #include <QPushButton>
Chris@303: #include <QGroupBox>
Chris@304: #include <QDesktopWidget>
Chris@304: #include <QApplication>
Chris@305: #include <QUrl>
Chris@305: #include <QMessageBox>
Chris@303: 
Chris@378: #include "ProgressDialog.h"
Chris@378: 
Chris@318: #include "data/fileio/FileSource.h"
Chris@378: #include "FileFinder.h"
Chris@303: 
Chris@305: #include <iostream>
Chris@305: 
Chris@303: ImageDialog::ImageDialog(QString title,
Chris@303:                          QString image,
Chris@303:                          QString label,
Chris@303:                          QWidget *parent) :
Chris@303:     QDialog(parent),
Chris@305:     m_imagePreview(0),
Chris@305:     m_remoteFile(0)
Chris@303: {
Chris@303:     setWindowTitle(title);
Chris@303:     
Chris@303:     QGridLayout *grid = new QGridLayout;
Chris@303:     setLayout(grid);
Chris@303: 
Chris@303:     QGroupBox *databox = new QGroupBox(tr("Image"));
Chris@303: 
Chris@303:     QGridLayout *subgrid = new QGridLayout;
Chris@303:     databox->setLayout(subgrid);
Chris@303: 
Chris@303:     int row = 0;
Chris@303: 
Chris@303:     subgrid->addWidget(new QLabel(tr("Label:")), row, 0);
Chris@303: 
Chris@303:     m_labelEdit = new QLineEdit;
Chris@303:     subgrid->addWidget(m_labelEdit, row, 1, 1, 2);
Chris@303: 
Chris@303:     ++row;
Chris@303: 
Chris@305:     subgrid->addWidget(new QLabel(tr("File or URL:")), row, 0);
Chris@303: 
Chris@303:     m_imageEdit = new QLineEdit;
Chris@303:     subgrid->addWidget(m_imageEdit, row, 1, 1, 1);
Chris@305: 
Chris@304:     connect(m_imageEdit, SIGNAL(textEdited(const QString &)),
Chris@304:             this, SLOT(imageEditEdited(const QString &)));
Chris@305:     connect(m_imageEdit, SIGNAL(editingFinished()),
Chris@305:             this, SLOT(imageEditEdited()));
Chris@303: 
Chris@303:     QPushButton *browse = new QPushButton(tr("Browse..."));
Chris@303:     connect(browse, SIGNAL(clicked()), this, SLOT(browseClicked()));
Chris@303:     subgrid->addWidget(browse, row, 2, 1, 1);
Chris@303: 
Chris@303:     ++row;
Chris@303: 
Chris@303:     QGroupBox *previewbox = new QGroupBox(tr("Preview"));
Chris@303:     
Chris@303:     subgrid = new QGridLayout;
Chris@303:     previewbox->setLayout(subgrid);
Chris@303: 
Chris@303:     m_imagePreview = new QLabel;
Chris@303:     m_imagePreview->setAlignment(Qt::AlignCenter);
Chris@303:     subgrid->addWidget(m_imagePreview, 0, 0);
Chris@303: 
Chris@303:     m_imagePreview->setMinimumSize(QSize(100, 100));
Chris@303: 
Chris@304:     QDesktopWidget *desktop = QApplication::desktop();
Chris@304:     m_imagePreview->setMaximumSize(QSize((desktop->width() * 2) / 3,
Chris@304:                                          (desktop->height() * 2) / 3));
Chris@304: 
Chris@303:     grid->addWidget(databox, 0, 0);
Chris@303:     grid->addWidget(previewbox, 1, 0);
Chris@303: 
Chris@303:     grid->setRowStretch(1, 10);
Chris@303: 
Chris@303:     QDialogButtonBox *bb = new QDialogButtonBox(QDialogButtonBox::Ok |
Chris@303:                                                 QDialogButtonBox::Cancel);
Chris@303:     grid->addWidget(bb, 2, 0, 1, 1);
Chris@303:     connect(bb, SIGNAL(accepted()), this, SLOT(accept()));
Chris@303:     connect(bb, SIGNAL(rejected()), this, SLOT(reject()));
Chris@303: 
Chris@303:     m_okButton = bb->button(QDialogButtonBox::Ok);
Chris@303:     m_okButton->setEnabled(false);
Chris@303: 
Chris@303:     if (image != "") setImage(image);
Chris@303:     if (label != "") setLabel(label);
Chris@303: }
Chris@303: 
Chris@303: ImageDialog::~ImageDialog()
Chris@303: {
Chris@305:     delete m_remoteFile;
Chris@303: }
Chris@303: 
Chris@303: QString
Chris@303: ImageDialog::getImage()
Chris@303: {
Chris@303:     return m_loadedImageFile;
Chris@303: }
Chris@303: 
Chris@303: QPixmap
Chris@303: ImageDialog::getPixmap()
Chris@303: {
Chris@303:     return m_loadedImage;
Chris@303: }
Chris@303: 
Chris@303: QString
Chris@303: ImageDialog::getLabel()
Chris@303: {
Chris@303:     return m_labelEdit->text();
Chris@303: }
Chris@303: 
Chris@303: void
Chris@303: ImageDialog::setImage(QString image)
Chris@303: {
Chris@303:     m_imageEdit->setText(image);
Chris@303:     updatePreview();
Chris@303: }
Chris@303: 
Chris@303: void
Chris@303: ImageDialog::setLabel(QString label)
Chris@303: {
Chris@303:     m_labelEdit->setText(label);
Chris@303: }
Chris@303: 
Chris@303: void
Chris@303: ImageDialog::resizeEvent(QResizeEvent *)
Chris@303: {
Chris@303:     updatePreview();
Chris@303: }
Chris@303: 
Chris@303: void
Chris@305: ImageDialog::imageEditEdited(const QString &s)
Chris@305: {
Chris@305:     if (s.startsWith("http:") || s.startsWith("ftp:")) {
Chris@305:         return;
Chris@305:     }
Chris@305:     updatePreview();
Chris@305: }
Chris@305: 
Chris@305: void
Chris@305: ImageDialog::imageEditEdited()
Chris@304: {
Chris@304:     updatePreview();
Chris@304: }
Chris@304: 
Chris@304: void
Chris@303: ImageDialog::updatePreview()
Chris@303: {
Chris@303:     if (!m_imagePreview) return;
Chris@303: 
Chris@303:     QString img = m_imageEdit->text();
Chris@303: 
Chris@304:     m_okButton->setEnabled(img != "");
Chris@304: 
Chris@303:     if (img != m_loadedImageFile) {
Chris@305: 
Chris@305:         QString fileName = img;
Chris@305:         delete m_remoteFile;
Chris@305:         m_remoteFile = 0;
Chris@305: 
Chris@318:         if (FileSource::isRemote(fileName)) {
Chris@305:             QUrl url(fileName);
Chris@318:             if (!FileSource::canHandleScheme(url)) {
Chris@305:                 QMessageBox::critical(this, tr("Unsupported scheme in URL"),
Chris@305:                                       tr("The URL scheme \"%1\" is not supported")
Chris@305:                                       .arg(url.scheme()));
Chris@305:             } else {
Chris@378:                 
Chris@378:                 ProgressDialog dialog(tr("Opening image URL..."), true, 2000);
Chris@378:                 m_remoteFile = new FileSource(url, &dialog);
Chris@317:                 m_remoteFile->waitForData();
Chris@305:                 if (!m_remoteFile->isOK()) {
Chris@305:                     QMessageBox::critical(this, tr("File download failed"),
Chris@305:                                           tr("Failed to download URL \"%1\": %2")
Chris@305:                                           .arg(url.toString()).arg(m_remoteFile->getErrorString()));
Chris@305:                     delete m_remoteFile;
Chris@305:                     m_remoteFile = 0;
Chris@305:                 } else {
Chris@305:                     fileName = m_remoteFile->getLocalFilename();
Chris@305:                 }
Chris@305:             }
Chris@305:         }
Chris@305:         
Chris@305: //        std::cerr << "image filename: \"" << fileName.toStdString() << "\"" << std::endl;
Chris@305: 
Chris@305:         m_loadedImage = QPixmap(fileName);
Chris@303:         m_loadedImageFile = img;
Chris@303:     }
Chris@303: 
Chris@303:     QSize sz(m_imagePreview->size());
Chris@303:     int m = m_imagePreview->margin() * 2;
Chris@303:     sz -= QSize(m, m);
Chris@303: 
Chris@303:     if (m_loadedImage.isNull()) {
Chris@303:         m_imagePreview->setPixmap(QPixmap());
Chris@303:     } else {
Chris@303:         m_imagePreview->setPixmap(m_loadedImage.scaled
Chris@303:                                   (sz,
Chris@303:                                    Qt::KeepAspectRatio,
Chris@303:                                    Qt::SmoothTransformation));
Chris@303:     }
Chris@303: }
Chris@303: 
Chris@303: void
Chris@303: ImageDialog::browseClicked()
Chris@303: {
Chris@303:     QString file =
Chris@303:         FileFinder::getInstance()->getOpenFileName(FileFinder::ImageFile);
Chris@303: 
Chris@303:     if (file != "") {
Chris@303:         setImage(file);
Chris@303:         emit imageChanged(file);
Chris@303:     }
Chris@303: }
Chris@303: 
Chris@303: 
Chris@303: