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shell/perf-helper: Use custom CSS for background

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GTK4 no longer has the concept of "app-paintable" to skip the
default background drawing. Prepare for that by setting the
desired background via CSS and draw on top of that.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2733>
This commit is contained in:
Florian Müllner 2023-04-18 03:35:17 +02:00 committed by Marge Bot
parent 3f9fcf418b
commit 54b4cfc69b
1 changed files with 25 additions and 15 deletions
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40
src/shell-perf-helper.c
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@ -32,6 +32,11 @@ static const gchar introspection_xml[] =
" </interface>"
"</node>";
static const char application_css[] =
".solid { background: rgb(255,255,255); }"
".alpha { background: rgba(255,255,255,0.5); }"
"";
static int opt_idle_timeout = 30;
static GOptionEntry opt_entries[] =
@ -58,7 +63,6 @@ G_DECLARE_FINAL_TYPE (PerfHelperWindow, perf_helper_window, PERF_HELPER, WINDOW,
struct _PerfHelperWindow {
GtkApplicationWindow parent;
guint alpha : 1;
guint redraws : 1;
guint mapped : 1;
guint exposed : 1;
@ -167,17 +171,6 @@ on_child_draw (GtkWidget *widget,
* is drastrically wrong.
*/
cairo_save (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
if (window->alpha)
cairo_set_source_rgba (cr, 1, 1, 1, 0.5);
else
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
cairo_restore (cr);
if (window->redraws)
{
double position = (window->time - window->start_time) / 1000000.;
@ -237,7 +230,6 @@ create_window (PerfHelperApp *app,
"application", app,
NULL);
window->alpha = alpha;
window->redraws = redraws;
if (alpha)
gtk_widget_set_visual (GTK_WIDGET (window), gdk_screen_get_rgba_visual (gdk_screen_get_default ()));
@ -251,9 +243,10 @@ create_window (PerfHelperApp *app,
}
else
{
child = g_object_new (GTK_TYPE_BOX, "visible", TRUE, "app-paintable", TRUE, NULL);
gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (window)),
alpha ? "alpha" : "solid");
child = g_object_new (GTK_TYPE_BOX, "visible", TRUE, NULL);
gtk_widget_set_app_paintable (GTK_WIDGET (window), TRUE);
g_signal_connect (child, "draw", G_CALLBACK (on_child_draw), NULL);
}
@ -354,6 +347,22 @@ perf_helper_app_activate (GApplication *app)
{
}
static void
perf_helper_app_startup (GApplication *app)
{
GtkCssProvider *css_provider;
G_APPLICATION_CLASS (perf_helper_app_parent_class)->startup (app);
css_provider = gtk_css_provider_new ();
gtk_css_provider_load_from_data (css_provider, application_css, -1, NULL);
gtk_style_context_add_provider_for_screen (gdk_screen_get_default (),
GTK_STYLE_PROVIDER (css_provider),
GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
}
static gboolean
perf_helper_app_dbus_register (GApplication *app,
GDBusConnection *connection,
@ -383,6 +392,7 @@ perf_helper_app_class_init (PerfHelperAppClass *klass)
GApplicationClass *gapp_class = G_APPLICATION_CLASS (klass);
gapp_class->activate = perf_helper_app_activate;
gapp_class->startup = perf_helper_app_startup;
gapp_class->dbus_register = perf_helper_app_dbus_register;
}