[Bug 220122] New: [digikam] View 100% doesn't show real size (1:1)

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[Bug 220122] New: [digikam] View 100% doesn't show real size (1:1)

Mark Purcell
https://bugs.kde.org/show_bug.cgi?id=220122

           Summary: [digikam] View 100% doesn't show real size (1:1)
           Product: digikam
           Version: 1.0.0
          Platform: unspecified
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


Version:           1.0.0 (using 4.3.4 (KDE 4.3.4), Debian packages)
Compiler:          cc
OS:                Linux (i686) release 2.6.32-trunk-686

http://bugs.debian.org/562197

From: Ingo Juergensmann <[hidden email]>
To: [hidden email]
Subject: [digikam] View 100% doesn't show real size (1:1)
Date: Wed, 23 Dec 2009 19:50:16 +0100

Package: digikam
Version: 2:1.0.0-1
Severity: normal

--- Please enter the report below this line. ---

Hi!

I'm using digikam on unstable and have experienced for some time now
that choosing "View -> Zoom to 100%" doesn't show the real size of the
picture, i.e. it is still scaled down.
When comparing the very same picture (by choosing "Open with..." with
e.g. Okular the effect is obvious.
See
http://blog.windfluechter.net/uploads/screenshots/Digikam_100percent-View.png
for an example picture or
http://blog.windfluechter.net/index.php?/archives/849-Digikams-100%25-view.html
for the matching blog entry of mine.

In both apps (digikam & okular) it's the same JPEG picture and scale
level (100%).

Regards,
Ingo


--- System information. ---
Architecture: amd64
Kernel:       Linux 2.6.31-1-amd64

Debian Release: squeeze/sid
  500 unstable        www.debian-multimedia.org
  500 unstable        ftp2.de.debian.org

--- Package information. ---
Depends                   (Version) | Installed
===================================-+-==============
kdebase-runtime        (>= 4:4.3.0) | 4:4.3.4-2
kdelibs5               (>= 4:4.3.4) | 4:4.3.4-1
kdepimlibs5            (>= 4:4.3.4) | 4:4.3.4-1
libc6                      (>= 2.3) | 2.10.2-2
libgcc1                (>= 1:4.1.1) | 1:4.4.2-6
libglib2.0-0            (>= 2.12.0) | 2.22.3-1
libgphoto2-2             (>= 2.4.3) | 2.4.6-1
libgphoto2-port0         (>= 2.4.3) | 2.4.6-1
libjasper1             (>= 1.900.1) | 1.900.1-6.1
libjpeg62                           | 6b-15
libkdcraw7             (>= 4:4.3.4) | 4:4.3.4-1
libkexiv2-7            (>= 4:4.3.4) | 4:4.3.4-1
libkipi6               (>= 4:4.3.4) | 4:4.3.4-1
liblcms1                (>= 1.15-1) | 1.18.dfsg-1
liblensfun0              (>= 0.2.3) | 0.2.4-1
liblqr-1-0               (>= 0.4.0) | 0.4.1-1
libmarble4             (>= 4:4.3.4) | 4:4.3.4-1
libphonon4             (>= 4:4.2.0) | 4:4.5.3-4
libpng12-0            (>= 1.2.13-4) | 1.2.41-1
libqt4-dbus            (>= 4:4.5.3) | 4:4.5.3-4
libqt4-network         (>= 4:4.5.3) | 4:4.5.3-4
libqt4-qt3support      (>= 4:4.5.3) | 4:4.5.3-4
libqt4-sql             (>= 4:4.5.3) | 4:4.5.3-4
libqt4-svg             (>= 4:4.5.3) | 4:4.5.3-4
libqt4-xml             (>= 4:4.5.3) | 4:4.5.3-4
libqtcore4             (>= 4:4.5.3) | 4:4.5.3-4
libqtgui4              (>= 4:4.5.3) | 4:4.5.3-4
libsoprano4             (>= 2.1.67) | 2.3.1+dfsg.1-1
libstdc++6               (>= 4.1.1) | 4.4.2-6
libtiff4                            | 3.9.2-1
libx11-6                     (>= 0) | 2:1.3.2-1
libxau6                             | 1:1.0.5-1
libxdmcp6                           | 1:1.0.3-1
phonon                 (>= 4:4.5.2) | 4:4.5.3-4
zlib1g                 (>= 1:1.1.4) | 1:1.2.3.3.dfsg-15
libqt4-sql-sqlite                   | 4:4.5.3-4


Recommends        (Version) | Installed
===========================-+-===========
www-browser                 |
kipi-plugins                | 1.0.0-1


Suggests         (Version) | Installed
==========================-+-===========
digikam-doc                |





--
Ciao...            //      Fon: 0381-2744150
      Ingo       \X/       http://blog.windfluechter.net

gpg pubkey: http://www.juergensmann.de/ij_public_key.asc

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[Bug 220122] [digikam] View 100% doesn't show real size (1:1)

Johannes Wienke-3
https://bugs.kde.org/show_bug.cgi?id=220122





--- Comment #1 from Johannes Wienke <languitar semipol de>  2009-12-26 10:40:08 ---
Created an attachment (id=39348)
 --> (http://bugs.kde.org/attachment.cgi?id=39348)
same size

Hm, I cannot reproduce this (see the attachment). Are you doing anything
special? Please provide a detailed description how you achieve this and if
possible attach an image that shows this problem.

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[Bug 220122] [digikam] View 100% doesn't show real size (1:1)

Mark Purcell
In reply to this post by Mark Purcell
https://bugs.kde.org/show_bug.cgi?id=220122





--- Comment #2 from Mark Purcell <msp debian org>  2009-12-26 12:27:06 ---
Created an attachment (id=39349)
 --> (http://bugs.kde.org/attachment.cgi?id=39349)
Digikam View/ Edit mode both at 100% scaling

This screenshot shows digikam in View & Edit mode both scaled to 100%, as you
can see the pictures are different sizes.

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[Bug 220122] [digikam] View 100% doesn't show real size (1:1)

Gilles Caulier-4
In reply to this post by Mark Purcell
https://bugs.kde.org/show_bug.cgi?id=220122





--- Comment #3 from Gilles Caulier <caulier gilles gmail com>  2009-12-26 12:39:06 ---
Mark,

In preview Mode (F3), move mouse over zoom slider from status bar and look zoom
factor display as tooltip. It's 100%. I'm sure no, because image is scaled to
fit size.

Gilles Caulier

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[Bug 220122] [digikam] View 100% doesn't show real size (1:1)

Mark Purcell
In reply to this post by Mark Purcell
https://bugs.kde.org/show_bug.cgi?id=220122





--- Comment #4 from Mark Purcell <msp debian org>  2009-12-26 12:41:44 ---
Created an attachment (id=39350)
 --> (http://bugs.kde.org/attachment.cgi?id=39350)
Test image for scaling

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[Bug 220122] [digikam] View 100% doesn't show real size (1:1)

Mark Purcell
In reply to this post by Mark Purcell
https://bugs.kde.org/show_bug.cgi?id=220122


Mark Purcell <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #39349|0                           |1
        is obsolete|                            |




--- Comment #5 from Mark Purcell <msp debian org>  2009-12-26 12:45:55 ---
Created an attachment (id=39351)
 --> (http://bugs.kde.org/attachment.cgi?id=39351)
Both view and preview mode at 100%

I have now placed my mouse over slider to demonstrate that both view and edit
mode are at 100%.

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[Bug 220122] [digikam] View 100% doesn't show real size (1:1)

Gilles Caulier-4
In reply to this post by Mark Purcell
https://bugs.kde.org/show_bug.cgi?id=220122





--- Comment #6 from Gilles Caulier <caulier gilles gmail com>  2009-12-26 13:01:51 ---
Created an attachment (id=39352)
 --> (http://bugs.kde.org/attachment.cgi?id=39352)
Are you sure. Look mine...

Of course, i use "Lod Embeded Preview Load Full Image" from Album View settings
page (:=)))

Preview is... _preview_. Without this option truned on, al downscaled image
size is loaded from JPEG (feature from libjpeg) to reduce time loading...

Gilles

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[Bug 220122] [digikam] View 100% doesn't show real size (1:1)

Mark Purcell
In reply to this post by Mark Purcell
https://bugs.kde.org/show_bug.cgi?id=220122





--- Comment #7 from Mark Purcell <msp debian org>  2009-12-27 10:23:10 ---
Thanks Gilles,

You have identified the issue.

The option _en "Album View:Misc Options:Embedded previews loads full-sized
images."

When selected loads images at their full size for preview (ie 1:1), however
when not selected the previews are at a reduced size.

Thus 100% is only correct if the option is selected, otherwise the 100% scaling
is incorrect.

Could I suggest that this is confusing for the end user, and that many users
would not be aware of this option, which is off by default to give optimal
performance.

Could I recommend to close this report that either;

1. The option be switched on by default (thus giving a correct 100% for
preview), or

2. The preview mode not report incorrectly 100% scaling.

Mark

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[Bug 220122] [digikam] View 100% doesn't show real size (1:1)

Gilles Caulier-4
In reply to this post by Mark Purcell
https://bugs.kde.org/show_bug.cgi?id=220122


Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|general                     |Preview




--- Comment #8 from Gilles Caulier <caulier gilles gmail com>  2009-12-27 10:33:54 ---
Well, no... I have another way to fix it

Andy as started a branch to port preview view to pure Qt4. port is done. I'm
waiting to backport this code in trunk.

When it's done, nothing will change for end users (visualy). I would to use
QGraphicsView with preview to show more visual information over preview for end
user, as "reduced image size" for JPEG or "embeded JPEG from RAW" for RAW file.

Like this, there will be no confusion.

About zoom selector from status bar, perhaps we can add a coefficient about
reduced ratio of image against original size, but i'm not sure if we can get it
properly with all RAW file. Also, with JPEG, the reduced ratio is taken from an
iteration loop with depend of conditional test from libjpeg if i remember. So,
it's not easy.

I more simple to display a short text over preview i think...

Gilles

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[Bug 220122] [digikam] View 100% doesn't show real size (1:1)

Gilles Caulier-4
In reply to this post by Mark Purcell
https://bugs.kde.org/show_bug.cgi?id=220122


Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED




--- Comment #9 from Gilles Caulier <caulier gilles gmail com>  2010-01-22 15:58:16 ---
SVN commit 1078655 by cgilles:

with icon view preview mode and light table, show an annotation over preview
area when reduced image is loaded instead full image size
BUGS: 220122


 M  +29 -0     digikam/imagepreviewview.cpp  
 M  +4 -3      digikam/imagepreviewview.h  
 M  +26 -1     libs/widgets/common/previewwidget.cpp  
 M  +1 -0      libs/widgets/common/previewwidget.h  
 M  +0 -21     utilities/imageeditor/widgets/imageregionwidget.cpp  
 M  +0 -1      utilities/imageeditor/widgets/imageregionwidget.h  
 M  +46 -10    utilities/lighttable/lighttablepreview.cpp  
 M  +2 -1      utilities/lighttable/lighttablepreview.h  


WebSVN link: http://websvn.kde.org/?view=rev&revision=1078655

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[Bug 220122] [digikam] View 100% doesn't show real size (1:1)

Gilles Caulier-4
In reply to this post by Mark Purcell
https://bugs.kde.org/show_bug.cgi?id=220122

Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Version Fixed In|                            |1.1.0

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