On Thu, 1 May 2025 14:50:15 GMT, Thiago Milczarek Sayao <tsa...@openjdk.org> 
wrote:

>> This is a continuation to 
>> [JDK-8236651](https://bugs.openjdk.org/browse/JDK-8236651) and it aims to 
>> stabilize the linux glass gtk backend.
>> 
>> 
>> Overall, it has been made more robust within its scope, particularly in 
>> terms of sizing, positioning, and state management.
>> 
>> List of changes:
>> 1. Use GDK for creating Windows. Since we paint directly to the underlying 
>> XWindow, creating a GtkWidget for the window is unnecessary and results in 
>> unused GTK resources. Additionally, avoiding the use of a GtkWidget 
>> eliminates the need for workarounds caused by conflicting GTK behavior—such 
>> as setting the initial window state, position, or size.
>> 2. It aligns with X11's asynchronous behavior by reporting geometry changes 
>> only upon receiving a configure event, since requests to the window manager 
>> aren't guaranteed to be honored. However, changes are still reported 
>> immediately in special cases, such as before the window is realized. For 
>> example, a request to move the window to (0, 0) might be overridden by the 
>> window manager, placing it in the top-right corner instead.
>> 3. States (fullscreen, maximized and iconify) are now reported back to Java 
>> when it actually happens rather than immediately (except when not realized);
>> 4. When a window is maximized, it will ignore geometry changes and restore 
>> to the geometry it had prior to being maximized. After some testing, I 
>> believe this is the best behavior for platform compatibility;
>> 5. Unifies the WindowContext class: previously, there were three separate 
>> classes—two of which (for applets and Java Web Start) were removed, leaving 
>> only one. However, the supporting infrastructure was still there partially. 
>> [Unify WindowContext in 
>> glass-gtk](https://bugs.openjdk.org/browse/JDK-8305768)
>> 6. Tests were added and re-enabled to ensure everything works correctly. The 
>> stage tests now cover various StageStyle configurations, as I found that 
>> `DECORATED` stages often behave differently from `UNDECORATED` or `UTILITY` 
>> stages;
>> 7. Added Logs for debugging. Enable it with ` -PCONF=DebugNative`;
>> 8. Old work-arounds dating back to Ubuntu 16.04 with Compiz were removed. 
>> 
>> A simple manual test is provided:
>> `java @build/run.args tests/manual/stage/TestStage.java `
>> 
>> 
>> List of fixed issues:
>> 
>> 1. [[Linux] Stage.setMaximized() before show() does not 
>> persist](https://bugs.openjdk.org/browse/JDK-8316425)
>> 3. [[Linux] Intermittent test failure in 
>> IconifyTest.canIconifyDecoratedStage](https://bugs.openjdk.org/browse/JDK-831689...
>
> Thiago Milczarek Sayao has updated the pull request incrementally with one 
> additional commit since the last revision:
> 
>   Fix test on SizingTest

modules/javafx.graphics/src/main/native-glass/gtk/GlassApplication.cpp line 486:

> 484:                 case GDK_PROPERTY_NOTIFY:
> 485:                     ctx->process_property_notify(&event->property);
> 486:                     gtk_main_do_event(event);

Some event types first call respective `ctx->process` and then 
`gtk_main_do_event`, while others do it the other way around. Is there a 
specific reason why?

modules/javafx.graphics/src/main/native-glass/gtk/GlassRobot.cpp line 22:

> 20:  *
> 21:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
> 22:  * or visit www.oracle.com if you need additiFonal information or have any

Coincidental change in copyright header

modules/javafx.graphics/src/main/native-glass/gtk/glass_general.h line 251:

> 249: #define LOG5(msg, param1, param2, param3, param4, param5) {printf(msg, 
> param1, param2, param3, param4, param5);fflush(stdout);}
> 250: #define LOG6(msg, param1, param2, param3, param4, param5, param6) 
> {printf(msg, param1, param2, param3, param4, param5, param6);fflush(stdout);}
> 251: #define LOG10(msg, param1, param2, param3, param4, param5, param6, 
> param7, param8, param9, param10) \

Instead of adding more `LOG*` macros consider replacing them with `#define 
LOG(...) { printf(__VA_ARGS__); fflush(stdout); }`

Eventually I would accept filing a separate change for improving this if we 
don't have one already. Seems like the `ERROR` macros below could also be 
improved in this way.

-------------

PR Review Comment: https://git.openjdk.org/jfx/pull/1789#discussion_r2071271567
PR Review Comment: https://git.openjdk.org/jfx/pull/1789#discussion_r2071440205
PR Review Comment: https://git.openjdk.org/jfx/pull/1789#discussion_r2071479393

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