https://bugs.kde.org/show_bug.cgi?id=461593
Bug ID: 461593
Summary: Aurorae SVG doesn't seem to have the concept of "title
bar"
Classification: Plasma
Product: kwin
Version: 5.26.3
Platform: Archlinux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: aurorae
Assignee: kwin-bugs-n...@kde.org
Reporter: wks1...@gmail.com
Target Milestone: ---
Created attachment 153587
--> https://bugs.kde.org/attachment.cgi?id=153587&action=edit
Previews of various Aurorae themes
SUMMARY
As shown in the attached image, some existing Aurura themes (downloadable from
store.kde.org) have title bars. However, the height of the title bars are
wrong, unless I set the text size and button size to a specific value that
matches the theme.
I looked at the source code of
`kwin/src/plugins/kdecorations/aurorae/src/qml/aurorae.qml`, and found there is
no specific place to fit an SVG image into the place of a "title bar". The
designers of those themes, such as "CDE", "Windows 3.1", "Reactionary" and
"Reactionary-KDE1", seem to make the title bar part of the top border. The
Aurorae engine simply puts the border on the top, using the exact size
specified in decoration.svg, regardless of the font size of the caption (there
is a Text with id = "caption" in aurorae.qml) or the button sizes. I think
with this design, it is impossible to make an SVG theme that can adjust its
"title bar" height dynamically.
On the other hand, themes without an obvious "title bar, such as "Endless",
"Gently-Light-Color-Aurorae", "Materia", "Sweet-ambar-blue", look good. This
makes me think maybe Aurorae is never designed with title bars in the first
place, and Aurorae themes should not have an explicit title bar.
For Plastik, as in `plastik/package/contents/ui/main.qml`, the top-level
Rectangle in the Decoration is filled with root.titleBarColor, and anchored to
the parent. Although `main.qml` does have a titleRow, it does not have its own
background image or color.
So should we add a way for SVG themes to fit an SVG element into the "title
bar" so that themes like "CDE" can be implemented better on Aurorae? I suppose
Aurorae can recognize elements of id = "decoration-titlebar" and, if that
exists, it is placed as the background of the title bar, and buttons and the
caption are placed over it; if it doesn't exist, the theme will be interpreted
in the old way.
STEPS TO REPRODUCE
1. Install an Aurorae theme, with an obvious title bar, such as "CDE".
2. Switch to that theme
3. Enlarge title font size, font DPI, or button sizes
4. Do not maximize the window
OBSERVED RESULT
The title bar image is not tall enough to cover the entire area for the title
bar, as shown in the attachment
EXPECTED RESULT
The title bar image should cover the entire title bar height.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: ArchLinux
(available in About System)
KDE Plasma Version: 5.26.2
KDE Frameworks Version: 5.99.0
Qt Version: 5.15.7
ADDITIONAL INFORMATION
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