feat(cli): smarter info window hiding logic (#482)

* Adds features from #327

This changes the ``--hide-info-window-`` command to accept three options: auto, always, and never. Auto will hide the info window if there is only one screen. This also fixes the --full-screen option by moving the info window to monitor 1 and the presentation to monitor 0 by default.

* chore(fmt): auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Let Qt decide the screens

* Fix full screen bug

* chore(fmt): auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* fix(cli): improve logic

* fix

* Revert fixes and clean code

* Update changelog

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Jérome Eertmans <jeertmans@icloud.com>

CHANGELOG.md

@@ -10,6 +10,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 (unreleased)=
 ## [Unreleased](https://github.com/jeertmans/manim-slides/compare/v5.1.10...HEAD)
 
+(unreleased-changed)=
+### Changed
+
+- The info window is now only shown in presentations when there
+  are multiple monitors. However, the `--show-info-window` option
+  was added to `manim-slides present` to force the info window.
+  When there are multiple monitors, the info window will no longer
+  be on the same monitor as the main window, unless overridden.
+  [@PeculiarProgrammer](https://github.com/PeculiarProgrammer)
+  [#482](https://github.com/jeertmans/manim-slides/pull/482)
+
 (v5.1.10)=
 ## [v5.1.10](https://github.com/jeertmans/manim-slides/compare/v5.1.9...v5.1.10)
 

manim_slides/present/__init__.py

@@ -1,7 +1,7 @@
 import signal
 import sys
 from pathlib import Path
-from typing import Optional
+from typing import Literal, Optional
 
 import click
 from click import Context, Parameter
@@ -222,20 +222,28 @@ def str_to_int_or_none(value: str) -> Optional[int]:
 )
 @click.option(
     "--hide-info-window",
-    is_flag=True,
-    help="Hide info window.",
+    flag_value="always",
+    help="Hide info window. By default, hide the info window if there is only one screen.",
+)
+@click.option(
+    "--show-info-window",
+    "hide_info_window",
+    flag_value="never",
+    help="Force to show info window.",
 )
 @click.option(
     "--info-window-screen",
     "info_window_screen_number",
     metavar="NUMBER",
     type=int,
     default=None,
-    help="Put info window on the given screen (a.k.a. display).",
+    help="Put info window on the given screen (a.k.a. display). "
+    "If there is more than one screen, it will by default put the info window "
+    "on a different screen than the main player.",
 )
 @click.help_option("-h", "--help")
 @verbosity_option
-def present(
+def present(  # noqa: C901
     scenes: list[str],
     config_path: Path,
     folder: Path,
@@ -251,7 +259,7 @@ def present(
     screen_number: Optional[int],
     playback_rate: float,
     next_terminates_loop: bool,
-    hide_info_window: bool,
+    hide_info_window: Optional[Literal["always", "never"]],
     info_window_screen_number: Optional[int],
 ) -> None:
     """
@@ -294,22 +302,36 @@ def present(
     app = qapp()
     app.setApplicationName("Manim Slides")
 
+    screens = app.screens()
+
     def get_screen(number: int) -> Optional[QScreen]:
         try:
-            return app.screens()[number]
+            return screens[number]
         except IndexError:
             logger.error(
                 f"Invalid screen number {number}, "
-                f"allowed values are from 0 to {len(app.screens())-1} (incl.)"
+                f"allowed values are from 0 to {len(screens)-1} (incl.)"
             )
             return None
 
+    should_hide_info_window = False
+
+    if hide_info_window is None:
+        should_hide_info_window = len(screens) == 1
+    elif hide_info_window == "always":
+        should_hide_info_window = True
+
+    if should_hide_info_window and info_window_screen_number is not None:
+        logger.warning(
+            f"Ignoring `--info-window-screen` because `--hide-info-window` is set to `{hide_info_window}`."
+        )
+
     if screen_number is not None:
         screen = get_screen(screen_number)
     else:
         screen = None
 
-    if info_window_screen_number is not None:
+    if info_window_screen_number is not None and not should_hide_info_window:
         info_window_screen = get_screen(info_window_screen_number)
     else:
         info_window_screen = None
@@ -333,11 +355,11 @@ def get_screen(number: int) -> Optional[QScreen]:
         screen=screen,
         playback_rate=playback_rate,
         next_terminates_loop=next_terminates_loop,
-        hide_info_window=hide_info_window,
+        hide_info_window=should_hide_info_window,
         info_window_screen=info_window_screen,
     )
 
-    player.show()
+    player.show(screens)
 
     signal.signal(signal.SIGINT, signal.SIG_DFL)
     sys.exit(app.exec())

manim_slides/present/player.py

@@ -28,7 +28,6 @@ class Info(QWidget):  # type: ignore[misc]
     def __init__(
         self,
         *,
-        full_screen: bool,
         aspect_ratio_mode: Qt.AspectRatioMode,
         screen: Optional[QScreen],
     ) -> None:
@@ -38,9 +37,6 @@ def __init__(
             self.setScreen(screen)
             self.move(screen.geometry().topLeft())
 
-        if full_screen:
-            self.setWindowState(Qt.WindowFullScreen)
-
         layout = QHBoxLayout()
 
         # Current slide view
@@ -243,7 +239,6 @@ def __init__(
         self.slide_changed.connect(self.slide_changed_callback)
 
         self.info = Info(
-            full_screen=full_screen,
             aspect_ratio_mode=aspect_ratio_mode,
             screen=info_window_screen,
         )
@@ -484,11 +479,28 @@ def preview_next_slide(self) -> None:
             self.info.next_media_player.setSource(url)
             self.info.next_media_player.play()
 
-    def show(self) -> None:
+    def show(self, screens: list[QScreen]) -> None:
+        """Screens is necessary to prevent the info window from being shown on the same screen as the main window (especially in full screen mode)."""
         super().show()
 
         if not self.hide_info_window:
-            self.info.show()
+            if len(screens) > 1 and self.isFullScreen():
+                self.ensure_different_screens(screens)
+
+            if self.isFullScreen():
+                self.info.showFullScreen()
+            else:
+                self.info.show()
+
+            if (
+                len(screens) > 1 and self.info.screen() == self.screen()
+            ):  # It is better when Qt assigns the location, but if it fails to, this is a fallback
+                self.ensure_different_screens(screens)
+
+    def ensure_different_screens(self, screens: list[QScreen]) -> None:
+        target_screen = screens[1] if self.screen() == screens[0] else screens[0]
+        self.info.setScreen(target_screen)
+        self.info.move(target_screen.geometry().topLeft())
 
     @Slot()
     def close(self) -> None:
@@ -538,8 +550,10 @@ def play_pause(self) -> None:
     def full_screen(self) -> None:
         if self.windowState() == Qt.WindowFullScreen:
             self.setWindowState(Qt.WindowNoState)
+            self.info.setWindowState(Qt.WindowNoState)
         else:
             self.setWindowState(Qt.WindowFullScreen)
+            self.info.setWindowState(Qt.WindowFullScreen)
 
     @Slot()
     def hide_mouse(self) -> None: