Are you just using MPxDrawOverride? If so, how can you achieve widget-like behavior (like a button) with DrawOverride classes?
Yes! You can ask Maya for the OpenGL or DirectX context, and use it like you would in a normal standalone application. If so, how can you achieve widget-like behavior (like a button) with DrawOverride classes? There are likely many ways, but we went the route of implementing a MPxManipulator which captures mouse movements and blocks other Maya inputs at the same time. From there, you would draw graphics and interpret mouse inputs like any normal application. This does deserve a longer write-up, because I don’t know of any resource for it. I cautiously experimented my way forwards and was happy and surprised it “just worked”. On Mon, 8 Jan 2024 at 13:58, Matin Falahmanesh <[email protected]> wrote: > Hi! How did you manage to render with OpenGL and DirectX directly into the > viewport? Are you just using MPxDrawOverride? If so, how can you achieve > widget-like behavior (like a button) with DrawOverride classes? > > Bests, > -MatinF > On Wednesday, July 20, 2022 at 1:41:41 AM UTC+4:30 Marcus Ottosson wrote: > >> Oh hey, I missed this! >> >> For reference, here's the UI Daniele is referring to. >> >> - >> https://user-images.githubusercontent.com/2152766/145669018-15c6847a-b031-4770-afe3-5a0b0bf50082.mp4 >> - https://learn.ragdolldynamics.com/documentation/manipulator/ >> >> On the one hand, it's totally possible to make a transparent widget that >> overlays the viewport. On the other hand, I did not use Qt for this. That >> UI is actually rendered with OpenGL and DirectX, directly into the >> viewport, as a custom Maya node. The transparent background is a polygon >> surface with transparency, rendered very near the camera so as to not clip >> with other 3d geometry, and the text is.. textures. Under the hood, it's >> drawn with an MPxDrawOverride. >> >> Now, I mentioned that it is possible to make a transparend widget, but it >> does get a bit finicky. MacOS for example doesn't let you do it. For >> whatever reason, anything 3d has to appear on-top of any transparent >> widget. From what I gather, this is how their window manager is designed. >> For Linux and Windows, it's possible, but finicky. Your best bet is making >> a full-blown window, but make it borderless. For transparency, your best >> bet is physically screencapturing the area underneath the widget, and using >> that as a background image to your widget. >> >> Like I said, finicky. The issue you're having with needing to move and >> resize your widget as the viewport changes.. Yes, that is going to be >> challenging. Maya doesn't do a good job in letting you interact with the >> widget that holds onto the 3d surface, so it's not obvious how to get >> notified to changes and what those changes are. >> >> But it is possible! I had a conversation recently with the BroDynamics >> developer who I'll link to this thread in case he's got some things to >> share. >> >> On Tuesday, 29 March 2022 at 14:46:22 UTC+1 Daniele Dolci wrote: >> >>> Hi All! >>> >>> I am playing around in Maya trying to achieve a UI similar to the one >>> implemented in Ragdoll by Marcus Ottosson. I have a couple of questions. >>> The first is probably going to be trivial: How do I make the background of >>> this label transparent? I attach below a minimal test to reproduce it: >>> [image: Capture.PNG] >>> >>> ```python >>> import shiboken2 >>> import sys >>> import os >>> from maya import cmds >>> from maya.api import OpenMayaUI as omui >>> from maya.OpenMayaUI import MQtUtil >>> >>> try: >>> from PySide2 import QtCore, QtWidgets, QtGui >>> except ImportError: >>> from Qt import QtCore, QtWidgets >>> >>> CSS = """ >>> QDialog #View { >>> background-color: rgba(0, 0, 0, 0); >>> } >>> >>> QWidget #View { >>> background-color: rgba(0, 0, 0, 0); >>> } >>> >>> QLabel { >>> color: #eee; >>> font-size: 12px; >>> background-color: rgba(0, 0, 0, 0); >>> } >>> """ >>> class View(QtWidgets.QDialog): >>> >>> def __init__(self): >>> super(View, self).__init__() >>> self._init_window() >>> self._init_ui() >>> >>> def _init_window(self): >>> self.setWindowTitle("UI") >>> flags = QtCore.Qt.WindowFlags(QtCore.Qt.FramelessWindowHint | >>> QtCore.Qt.Dialog) >>> self.setWindowFlags(flags) >>> panel = cmds.playblast(activeEditor=True) >>> self.setAttribute(QtCore.Qt.WA_NoSystemBackground, True) >>> self.setAttribute(QtCore.Qt.WA_TranslucentBackground, True) >>> self.setAttribute(QtCore.Qt.WA_PaintOnScreen) >>> self.setObjectName("View") >>> >>> # view = omui.M3dView.getM3dViewFromModelEditor(panel) >>> view = MQtUtil.findControl(panel) >>> self._widget = shiboken2.wrapInstance(long(view), >>> QtWidgets.QDialog) >>> >>> self._widget.setObjectName("View") >>> self._widget.setAttribute(QtCore.Qt.WA_NoSystemBackground, True) >>> self._widget.setAttribute(QtCore.Qt.WA_TranslucentBackground, >>> True) >>> self._widget.setAttribute(QtCore.Qt.WA_PaintOnScreen) >>> >>> def _init_ui(self): >>> self._help_lbl = QtWidgets.QLabel("ToolTip", self._widget) >>> >>> self._help_lbl.move(self._widget.width() - 100, 10) >>> >>> self._help_lbl.show() >>> >>> self._help_lbl.setStyleSheet(CSS) >>> >>> def update(self, *args, **kwargs): >>> super(View, self).update(*args, **kwargs) >>> self._setup_btn.move(250, 1000) >>> self._create_btn.move(200, 1000) >>> self._build_btn.move(300, 1000) >>> self._optimize_btn.move(1400, 1000) >>> self._help_lbl.move(self._widget.width() - 100, 10) >>> >>> >>> View() >>> ``` >>> >>> the second question is, what would be the best way to have the widget to >>> be drawn again when the user change the size of the UI, when he switches >>> from attribute editor to channel box etc? Please see attached gif: >>> >>> [image: ui.gif] >>> >> -- > You received this message because you are subscribed to the Google Groups > "Python Programming for Autodesk Maya" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/python_inside_maya/84965d5e-1787-4528-a583-1adb83f96780n%40googlegroups.com > <https://groups.google.com/d/msgid/python_inside_maya/84965d5e-1787-4528-a583-1adb83f96780n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Python Programming for Autodesk Maya" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/python_inside_maya/CAFRtmOD6axYR8U4e3LB5iCnV6g_DYyzBX%2Bmec5imL7DCwWyKYQ%40mail.gmail.com.
