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Fix transparency for channel post thumbnails

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This commit is contained in:
defnax 2023-08-29 14:28:18 +02:00
parent 17562e727e
commit 1efed9d436
1 changed files with 8 additions and 4 deletions
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8
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>
@ -610,8 +611,10 @@ bool CreateGxsChannelMsg::setThumbNail(const std::string& path, int frame){
QImage tNail(imageBuffer, width, height, QImage::Format_RGB32);
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 +801,14 @@ void CreateGxsChannelMsg::sendMessage(const std::string &subject, const std::str
QBuffer buffer(&ba);
RsGxsImage image;
bool has_transparency = ImageUtil::hasAlphaContent(picture.toImage());
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());
}