Mercurial > hg > svgui
view widgets/ImageDialog.cpp @ 349:369a197737c7
* Various fixes to object lifetime management, particularly in the spectrum
layer and for notification of main model deletion.
The main purpose of this is to improve the behaviour of the spectrum, but I
think it may also help with #1840922 Various crashes in Layer Summary window.
author | Chris Cannam |
---|---|
date | Wed, 23 Jan 2008 15:43:27 +0000 |
parents | 832d246b327b |
children | 22b72f0f6a4e |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. This file copyright 2007 QMUL. 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. See the file COPYING included with this distribution for more information. */ #include "ImageDialog.h" #include <QLineEdit> #include <QGridLayout> #include <QLabel> #include <QDialogButtonBox> #include <QPushButton> #include <QGroupBox> #include <QDesktopWidget> #include <QApplication> #include <QUrl> #include <QMessageBox> #include "data/fileio/FileSource.h" #include "data/fileio/FileFinder.h" #include <iostream> ImageDialog::ImageDialog(QString title, QString image, QString label, QWidget *parent) : QDialog(parent), m_imagePreview(0), m_remoteFile(0) { setWindowTitle(title); QGridLayout *grid = new QGridLayout; setLayout(grid); QGroupBox *databox = new QGroupBox(tr("Image")); QGridLayout *subgrid = new QGridLayout; databox->setLayout(subgrid); int row = 0; subgrid->addWidget(new QLabel(tr("Label:")), row, 0); m_labelEdit = new QLineEdit; subgrid->addWidget(m_labelEdit, row, 1, 1, 2); ++row; subgrid->addWidget(new QLabel(tr("File or URL:")), row, 0); m_imageEdit = new QLineEdit; subgrid->addWidget(m_imageEdit, row, 1, 1, 1); connect(m_imageEdit, SIGNAL(textEdited(const QString &)), this, SLOT(imageEditEdited(const QString &))); connect(m_imageEdit, SIGNAL(editingFinished()), this, SLOT(imageEditEdited())); QPushButton *browse = new QPushButton(tr("Browse...")); connect(browse, SIGNAL(clicked()), this, SLOT(browseClicked())); subgrid->addWidget(browse, row, 2, 1, 1); ++row; QGroupBox *previewbox = new QGroupBox(tr("Preview")); subgrid = new QGridLayout; previewbox->setLayout(subgrid); m_imagePreview = new QLabel; m_imagePreview->setAlignment(Qt::AlignCenter); subgrid->addWidget(m_imagePreview, 0, 0); m_imagePreview->setMinimumSize(QSize(100, 100)); QDesktopWidget *desktop = QApplication::desktop(); m_imagePreview->setMaximumSize(QSize((desktop->width() * 2) / 3, (desktop->height() * 2) / 3)); grid->addWidget(databox, 0, 0); grid->addWidget(previewbox, 1, 0); grid->setRowStretch(1, 10); QDialogButtonBox *bb = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel); grid->addWidget(bb, 2, 0, 1, 1); connect(bb, SIGNAL(accepted()), this, SLOT(accept())); connect(bb, SIGNAL(rejected()), this, SLOT(reject())); m_okButton = bb->button(QDialogButtonBox::Ok); m_okButton->setEnabled(false); if (image != "") setImage(image); if (label != "") setLabel(label); } ImageDialog::~ImageDialog() { delete m_remoteFile; } QString ImageDialog::getImage() { return m_loadedImageFile; } QPixmap ImageDialog::getPixmap() { return m_loadedImage; } QString ImageDialog::getLabel() { return m_labelEdit->text(); } void ImageDialog::setImage(QString image) { m_imageEdit->setText(image); updatePreview(); } void ImageDialog::setLabel(QString label) { m_labelEdit->setText(label); } void ImageDialog::resizeEvent(QResizeEvent *) { updatePreview(); } void ImageDialog::imageEditEdited(const QString &s) { if (s.startsWith("http:") || s.startsWith("ftp:")) { return; } updatePreview(); } void ImageDialog::imageEditEdited() { updatePreview(); } void ImageDialog::updatePreview() { if (!m_imagePreview) return; QString img = m_imageEdit->text(); m_okButton->setEnabled(img != ""); if (img != m_loadedImageFile) { QString fileName = img; delete m_remoteFile; m_remoteFile = 0; if (FileSource::isRemote(fileName)) { QUrl url(fileName); if (!FileSource::canHandleScheme(url)) { QMessageBox::critical(this, tr("Unsupported scheme in URL"), tr("The URL scheme \"%1\" is not supported") .arg(url.scheme())); } else { m_remoteFile = new FileSource(url, FileSource::ProgressDialog); m_remoteFile->waitForData(); if (!m_remoteFile->isOK()) { QMessageBox::critical(this, tr("File download failed"), tr("Failed to download URL \"%1\": %2") .arg(url.toString()).arg(m_remoteFile->getErrorString())); delete m_remoteFile; m_remoteFile = 0; } else { fileName = m_remoteFile->getLocalFilename(); } } } // std::cerr << "image filename: \"" << fileName.toStdString() << "\"" << std::endl; m_loadedImage = QPixmap(fileName); m_loadedImageFile = img; } QSize sz(m_imagePreview->size()); int m = m_imagePreview->margin() * 2; sz -= QSize(m, m); if (m_loadedImage.isNull()) { m_imagePreview->setPixmap(QPixmap()); } else { m_imagePreview->setPixmap(m_loadedImage.scaled (sz, Qt::KeepAspectRatio, Qt::SmoothTransformation)); } } void ImageDialog::browseClicked() { QString file = FileFinder::getInstance()->getOpenFileName(FileFinder::ImageFile); if (file != "") { setImage(file); emit imageChanged(file); } }