feature:webp auto scale to reduce the size

xiaoyifang · Apr 17, 2022 · a4c1e27 · a4c1e27
1 parent 8bbcb72
commit a4c1e27
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/tiff.cc b/tiff.cc
@@ -14,6 +14,8 @@
 #endif
 
 #include <QBuffer>
+#include <QApplication>
+#include <QScreen>
 
 namespace GdTiff
 {
@@ -153,7 +155,11 @@ void tiff2img( vector< char > & data, const char * format )
     QByteArray ba;
     QBuffer buffer( &ba );
     buffer.open( QIODevice::WriteOnly );
-    img.save( &buffer, format );
+    QSize screenSize = QApplication::primaryScreen()->availableSize();
+    QSize imgSize    = img.size();
+    int scaleSize    = qMin( imgSize.width(), screenSize.width() );
+
+    img.scaledToWidth( scaleSize ).save( &buffer, format );
 
     data.resize( buffer.size() );
     memcpy( &data.front(), buffer.data(), data.size() );