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Merge pull request #2769 from defnax/thumbnailfixchannelpost

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Fix transparency for channel post thumbnails
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csoler 2023-09-19 15:19:21 +02:00 committed by GitHub
commit 4cb36a5b69
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1 changed files with 12 additions and 5 deletions
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13
retroshare-gui/src/gui/gxschannels/CreateGxsChannelMsg.cpp
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@ -35,6 +35,7 @@
#include "util/rsdir.h"
#include "util/qtthreadsutils.h"
#include "util/RichTextEdit.h"
#include "util/imageutil.h"
#include <retroshare/rsfiles.h>
@ -607,11 +608,13 @@ bool CreateGxsChannelMsg::setThumbNail(const std::string& path, int frame){
if(imageBuffer == NULL)
return false;
QImage tNail(imageBuffer, width, height, QImage::Format_RGB32);
QImage tNail(imageBuffer, width, height, QImage::Format_RGBA32);
QByteArray ba;
QBuffer buffer(&ba);
bool has_transparency = ImageUtil::hasAlphaContent(tNail.toImage());
buffer.open(QIODevice::WriteOnly);
tNail.save(&buffer, "JPG");
tNail.save(&buffer, has_transparency?"PNG":"JPG");
QPixmap img;
img.loadFromData(ba, "PNG");
img = img.scaled(thumbnail_label->width(), thumbnail_label->height(), Qt::KeepAspectRatio, Qt::SmoothTransformation);
@ -798,13 +801,17 @@ void CreateGxsChannelMsg::sendMessage(const std::string &subject, const std::str
QBuffer buffer(&ba);
RsGxsImage image;
QPixmap pixmap;
pixmap = preview_W->getCroppedScaledPicture();
QImage qimg = pixmap.toImage();
bool has_transparency = ImageUtil::hasAlphaContent(qimg);
if(!picture.isNull())
{
// send chan image
buffer.open(QIODevice::WriteOnly);
preview_W->getCroppedScaledPicture().save(&buffer, "JPG"); // writes image into ba in PNG format
preview_W->getCroppedScaledPicture().save(&buffer, has_transparency?"PNG":"JPG"); // writes image into ba in PNG format
image.copy((uint8_t *) ba.data(), ba.size());
}