bugGNU Octave - Bugs: bug #63697, canvas not properly redrawn on...


bug #63697: canvas not properly redrawn on resize in recent dev

Submitter:  A.R. Burgers <arb>
Submitted:  Tue 24 Jan 2023 11:48:38 AM UTC
Category:  Plotting with OpenGL Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Regression
Status:  Fixed Assigned to:  None
Originator Name:  Open/Closed:  * Closed
Release:  * dev Operating System:  * GNU/Linux
Fixed Release:  None Planned Release:  None
* Mandatory Fields

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( Jump to the original submission )

Fri 03 Feb 2023 06:44:33 PM UTC, comment #6: 

Closing report as fixed.

Pantxo Diribarne <pantxo>
Project Member
Thu 26 Jan 2023 08:28:15 AM UTC, comment #5: 

c815d3e06c53 fixes the issue for me

A.R. Burgers <arb>
Tue 24 Jan 2023 09:55:36 PM UTC, comment #4: 

It (hg id 1d1eff97670e) works for me as well.


Dmitri A. Sergatskov <dasergatskov>
Tue 24 Jan 2023 09:21:14 PM UTC, comment #3: 

The following changeset appears to fix the problem for me.


John W. Eaton <jwe>
Project Administrator
Tue 24 Jan 2023 03:01:19 PM UTC, comment #2: 


Last good revision is hg id 3105755fa5f1 .
hg id d94ceed56929 broke it:

GLCanvas: avoid multiple inheritance from both QWidget and QObject(4 days ago)
Author        John W. Eaton <jwe@octave.org>
Date        January 20, 2023 8:49 AM (4 days ago)
Repository        https://hg.savannah.gnu.org/hgweb/octave
Branch        default
Revision        d94ceed56929dbb6e4ef1261234fce2fb72957ba
GLCanvas: avoid multiple inheritance from both QWidget and QObject

To avoid having GLCanvas inherit from both QWidget and QObject, create
a separate class, GLWidget, derived from QOpenGLWidget and use that as
a member of GLCanvas instead of a base class.

* Canvas.h (class Canvas): Derive from QWidget instead of QObject.
(Canvas::Canvas): New argument for parent widget.  Pass parent to
QWidget base class constructor.

* GLCanvas.h, GLCanvas.cc (class GLCanvas): Split QOpenGLWidget parts
into separate GLWidget class.  GLCanvas now processes things related
to the interpreter and forwards to GLWidget for rendering.  Use
unwind_action objects to ensure OpenGL context is restored.
(GLCanvas::m_glwidget): New data member for GLWidget.

* libbgui/graphics/module.mk (OCTAVE_GUI_GRAPHICS_MOC): Add
moc-GLCanvas.cc to the list.
Changed files


Dmitri A. Sergatskov <dasergatskov>
Tue 24 Jan 2023 02:51:34 PM UTC, comment #1: 


Still worked fine with hg id eb32cf98eed1.


Dmitri A. Sergatskov <dasergatskov>
Tue 24 Jan 2023 11:48:38 AM UTC, original submission:  

recent dev does an incomplete redraw of the canvas on resizing, see the attached plot for a side-by-side comparison of 8.0.91 and 9.0.0, after resizing the initial plot window. octave-8 and octave-9 both built on the same platform with the same libraries.

tk = graphics_toolkit
hg_id = __octave_config_info__.hg_id
[x,y,z] = sombrero;
surf(x, y, z)
title(['octave ' version]);

octave-8 output:

tk = qt
version = 8.0.91
hg_id = bcb4becbcf94

octave-9 output:

tk = qt
version = 9.0.0
hg_id = 56223b5a01d4

A.R. Burgers <arb>


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Attach Files:

Attached Files
file #54258:  bug_plot.png added by arb (214KiB - image/png)


Depends on the following items: None found

Items that depend on this one: None found


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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2023-02-03 pantxo StatusReady For Test Fixed
        Open/ClosedOpen Closed
    2023-01-24 jwe StatusNone Ready For Test
    2023-01-24 arb Attached File- Added bug_plot.png, #54258

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