Git-Mirrors/RetroShare
1
0
Fork 0
mirror of https://github.com/RetroShare/RetroShare.git synced 2025-07-22 22:21:09 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Downscale image automatically

Browse source
This commit is contained in:
hunbernd 2017-06-08 23:00:33 +02:00
parent f50351063d
commit 9af2730879
3 changed files with 88 additions and 42 deletions
Download patch file Download diff file Expand all files Collapse all files

47
retroshare-gui/src/util/HandleRichText.cpp
View file

@ -35,6 +35,8 @@
#include "HandleRichText.h"
#include "gui/RetroShareLink.h"
#include "util/ObjectPainter.h"
#include "util/imageutil.h"
#include "util/rsscopetimer.h"
#include <iostream>
@ -1119,48 +1121,9 @@ bool RsHtml::makeEmbeddedImage(const QString &fileName, QString &embeddedImage,
/** Converts image to embedded image HTML fragment **/
bool RsHtml::makeEmbeddedImage(const QImage &originalImage, QString &embeddedImage, const int maxPixels)
{
QByteArray bytearray;
QBuffer buffer(&bytearray);
QImage resizedImage;
const QImage *image = &originalImage;
if (maxPixels > 0) {
QSize imgSize = originalImage.size();
if ((imgSize.height() * imgSize.width()) > maxPixels) {
// image is too large - resize keeping aspect ratio
QSize newSize;
newSize.setWidth(int(qSqrt((maxPixels * imgSize.width()) / imgSize.height())));
newSize.setHeight(int((imgSize.height() * newSize.width()) / imgSize.width()));
// ask user
QMessageBox msgBox;
msgBox.setText(QString(QApplication::translate("RsHtml", "Image is oversized for transmission.\nReducing image to %1x%2 pixels?")).arg(newSize.width()).arg(newSize.height()));
msgBox.setStandardButtons(QMessageBox::Ok | QMessageBox::Cancel);
msgBox.setDefaultButton(QMessageBox::Ok);
if (msgBox.exec() != QMessageBox::Ok) {
return false;
}
resizedImage = originalImage.scaled(newSize, Qt::KeepAspectRatio, Qt::SmoothTransformation);
image = &resizedImage;
}
}
if (buffer.open(QIODevice::WriteOnly)) {
if (image->save(&buffer, "PNG")) {
QByteArray encodedByteArray = bytearray.toBase64();
embeddedImage = "<img src=\"data:image/png;base64,";
embeddedImage.append(encodedByteArray);
embeddedImage.append("\">");
} else {
//fprintf (stderr, "RsHtml::makeEmbeddedImage() - image can't be saved to buffer\n");
return false;
}
} else {
fprintf (stderr, "RsHtml::makeEmbeddedImage() - buffer can't be opened\n");
return false;
}
return true;
RsScopeTimer s("Embed image");
QImage opt;
ImageUtil::optimizeSize(embeddedImage, originalImage, opt, maxPixels, 6000);
}
QString RsHtml::plainText(const QString &text)