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List:       kde-bugs-dist
Subject:    [Bug 75742] Scaled down images in KOffice documents are extremely
From:       Nicolas Goutte <nicolasg () snafu ! de>
Date:       2004-02-22 15:23:56
Message-ID: 20040222152356.26006.qmail () ktown ! kde ! org
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http://bugs.kde.org/show_bug.cgi?id=75742      




------- Additional Comments From nicolasg snafu de  2004-02-22 16:23 -------
On Saturday 21 February 2004 00:44, Dik Takken wrote:
> ------- You are receiving this mail because: -------
> You are the assignee for the bug, or are watching the assignee.
>
> http://bugs.kde.org/show_bug.cgi?id=75742
>            Summary: Scaled down images in KOffice documents are extremely
>                     blurry
>            Product: koffice
>            Version: 1.3
>           Platform: Compiled Sources
>         OS/Version: Linux
>             Status: UNCONFIRMED
>           Severity: normal
>           Priority: NOR
>          Component: general
>         AssignedTo: koffice kde org
>         ReportedBy: takken phys uu nl
>
>
> Version:           1.3 (using KDE KDE 3.2.0)
> Installed from:    Compiled From Sources
> OS:          Linux

What application are you talking about. KWord and KPresenter are using 
KoPicture, while other programs do not.

>
> Scaled down images in KOffice documents are extremely blurry. This is
> especially well visible when using images of scanned text, or screenshots.

In fast mode or also in slow mode. Fast mode is applied in KWord when 
resizing. Slow mode is used when needed (for example printing.)
As for KPresenter, slow mode is always used.

> A more precise algorithm is needed.

We use Qt's.

>
> Also, it looks like the scaling of images is re-applied every time the
> image needs to be re-drawn on the screen. A scaled version of the image
> should be created and cached when the image is inserted into the document.
> The scaled version only needs to be re-calculated when the image is
> resized, or the user zooms in on the document. Ideally, these calculations
> should be done in a seperate thread.

KWord and KPresenter do cache and only resize when needed (+ printing.)

(...)

Have a nice day!
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