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[Linux][FlView] fix rendering on startup when shown after plugin registration (flutter/engine#38982)

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* [FlView] fix rendering on startup when shown after plugin registration

* Add clarifying comment
This commit is contained in:
J-P Nurmi 2023-01-26 22:11:20 +01:00 committed by GitHub
parent 23483e7168
commit d7963e6fa1
1 changed files with 13 additions and 2 deletions
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15
engine/src/flutter/shell/platform/linux/fl_view.cc
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@ -200,8 +200,17 @@ static void handle_geometry_changed(FlView* self) {
self->engine, allocation.width * scale_factor,
allocation.height * scale_factor, scale_factor);
fl_renderer_wait_for_frame(self->renderer, allocation.width * scale_factor,
allocation.height * scale_factor);
// Make sure the view has been realized and its size has been allocated before
// waiting for a frame. `fl_view_realize()` and `fl_view_size_allocate()` may
// be called in either order depending on the order in which the window is
// shown and the view is added to a container in the app runner.
//
// Note: `gtk_widget_init()` initializes the size allocation to 1x1.
if (allocation.width > 1 && allocation.height > 1 &&
gtk_widget_get_realized(GTK_WIDGET(self))) {
fl_renderer_wait_for_frame(self->renderer, allocation.width * scale_factor,
allocation.height * scale_factor);
}
}
// Adds a widget to render in this view.
@ -661,6 +670,8 @@ static void fl_view_realize(GtkWidget* widget) {
g_warning("Failed to start Flutter engine: %s", error->message);
return;
}
handle_geometry_changed(self);
}
// Implements GtkWidget::get-preferred-width