jpegs will be loaded scaled if needed for a faster preview loading

2 files changed, 83 insertions, 6 deletions

diff --git a/noncore/graphics/opie-eye/gui/imagescrollview.cpp b/noncore/graphics/opie-eye/gui/imagescrollview.cpp
index 2f16d82..d034ee0 100644
--- a/noncore/graphics/opie-eye/gui/imagescrollview.cpp
+++ b/noncore/graphics/opie-eye/gui/imagescrollview.cpp
@@ -3,2 +3,4 @@
 #include <opie2/odebug.h>
+#include <opie2/oapplication.h>
+#include <opie2/owait.h>
 
@@ -8,2 +10,3 @@ using namespace Opie::Core;
 #include <qlayout.h>
+#include <qpe/qcopenvelope_qws.h>
 
@@ -40,2 +43,4 @@ void ImageScrollView::setImage(const QImage&img)
     m_lastName = "";
+    image_is_jpeg = false;
+    image_scaled_loaded = false;
     if (first_resize_done) {
@@ -45,2 +50,43 @@ void ImageScrollView::setImage(const QImage&img)
 
+void ImageScrollView::loadJpeg(bool interncall)
+{
+    if (m_lastName.isEmpty()) return;
+    QImageIO iio( m_lastName, 0l );
+    QString param;
+    bool real_load = false;
+    if (scale_to_fit) {
+        if (!interncall) {
+            int wid, hei;
+            wid = QApplication::desktop()->width();
+            hei = QApplication::desktop()->height();
+            if (hei>wid) {
+                wid = hei;
+            } else {
+                hei = wid;
+            }
+            param = QString( "Fast Shrink( 7 ) Scale( %1, %2, ScaleFree)" ).arg( wid ).arg( hei );
+            odebug << "Load jpeg scaled \"" << param << "\"" << oendl;
+            iio.setParameters(param.latin1());
+            image_scaled_loaded = true;
+            real_load = true;
+        }
+    } else {
+        if (image_scaled_loaded||!interncall) {
+            odebug << "Load jpeg unscaled" << oendl;
+            real_load = true;
+        }
+        image_scaled_loaded = false;
+    }
+    if (real_load) {
+        {
+            QCopEnvelope( "QPE/System", "busy()" );
+        }
+        _original_data = iio.read() ? iio.image() : QImage();
+        {
+            QCopEnvelope env( "QPE/System", "notBusy(QString)" );
+            env << "Image loaded";
+        }
+    }
+}
+
 void ImageScrollView::setImage( const QString& path ) {
@@ -49,5 +95,20 @@ void ImageScrollView::setImage( const QString& path ) {
     m_lastName = path;
-    _original_data.load(path);
-    _original_data.convertDepth(QPixmap::defaultDepth());
-    _original_data.setAlphaBuffer(false);
+    QString itype = QImage::imageFormat(m_lastName);
+    odebug << "Image type = " << itype << oendl;
+    if (itype == "JPEG") {
+        image_is_jpeg = true;
+        loadJpeg();
+    } else {
+        {
+            QCopEnvelope( "QPE/System", "busy()" );
+        }
+        image_is_jpeg = false;
+        _original_data.load(path);
+        _original_data.convertDepth(QPixmap::defaultDepth());
+        _original_data.setAlphaBuffer(false);
+        {
+            QCopEnvelope env( "QPE/System", "notBusy(QString)" );
+            env << "Image loaded";
+        }
+    }
     _image_data = QImage();
@@ -79,2 +140,4 @@ void ImageScrollView::init()
     setFocusPolicy(QWidget::StrongFocus);
+    image_scaled_loaded = false;
+    image_is_jpeg = false;
     if (first_resize_done) {
@@ -105,2 +168,5 @@ void ImageScrollView::setAutoScale(bool how)
     _image_data = QImage();
+    if (image_is_jpeg && how == false && image_scaled_loaded==true) {
+        loadJpeg(true);
+    }
     generateImage();
@@ -242,2 +308,5 @@ void ImageScrollView::generateImage()
     Rotation r = Rotate0;
+    {
+        QCopEnvelope( "QPE/System", "busy()" );
+    }
     if (width()>height()&&_original_data.width()<_original_data.height() ||
@@ -246,2 +315,3 @@ void ImageScrollView::generateImage()
     }
+
     odebug << " r = " << r << oendl;
@@ -268,3 +338,3 @@ void ImageScrollView::generateImage()
     _pdata.convertFromImage(_image_data);
-    
+
 
@@ -273,3 +343,3 @@ void ImageScrollView::generateImage()
      */
-    check_zoomer();    
+    check_zoomer();
     emit imageSizeChanged( _image_data.size() );
@@ -281,3 +351,3 @@ void ImageScrollView::generateImage()
          _image_data.width()/2, _image_data.height()/2 );
-    
+
     _zoomer->setImage( _image_data );
@@ -287,2 +357,6 @@ void ImageScrollView::generateImage()
     _image_data=QImage();
+    {
+        QCopEnvelope env( "QPE/System", "notBusy(QString)" );
+        env << "Image generated";
+    }
 }
diff --git a/noncore/graphics/opie-eye/gui/imagescrollview.h b/noncore/graphics/opie-eye/gui/imagescrollview.h
index e209dfb..f6e187d 100644
--- a/noncore/graphics/opie-eye/gui/imagescrollview.h
+++ b/noncore/graphics/opie-eye/gui/imagescrollview.h
@@ -59,2 +59,4 @@ protected:
     bool first_resize_done;
+    bool image_is_jpeg;
+    bool image_scaled_loaded;
     Rotation last_rot;
@@ -65,2 +67,3 @@ protected:
     virtual void generateImage();
+    virtual void loadJpeg(bool interncall = false);
     bool image_fit_into(const QSize&s);