From dbb589c55bc855c2c0207afb353fa2152f106310 Mon Sep 17 00:00:00 2001
From: David Herrmann <dh.herrmann@googlemail.com>
Date: Wed, 15 Aug 2012 08:54:02 +0200
Subject: [PATCH] ui: add sleep/awake logic to UI

We need to forward all sleep/awake states to the lower subsystems to avoid
overdoing stuff like rendering an user-input. That is, while being asleep
we shouldn't render and/or do any other user-interaction.

This patch simply adds this logic to the UI subsystem, which, however,
does not to anything useful, yet.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
---
 src/main.c |  2 ++
 src/ui.c   | 26 ++++++++++++++++++++++++++
 src/ui.h   |  4 ++++
 3 files changed, 32 insertions(+)

diff --git a/src/main.c b/src/main.c
index 2848f40..f377899 100644
--- a/src/main.c
+++ b/src/main.c
@@ -86,6 +86,7 @@ static int vt_event(struct uterm_vt *vt, unsigned int action, void *data)
 
 	if (action == UTERM_VT_ACTIVATE) {
 		seat->awake = true;
+		kmscon_ui_wake_up(seat->ui);
 		uterm_input_wake_up(seat->input);
 
 		kmscon_dlist_for_each(iter, &seat->videos) {
@@ -99,6 +100,7 @@ static int vt_event(struct uterm_vt *vt, unsigned int action, void *data)
 		}
 
 		uterm_input_sleep(seat->input);
+		kmscon_ui_sleep(seat->ui);
 		seat->awake = false;
 	}
 
diff --git a/src/ui.c b/src/ui.c
index 73ba458..187ad8b 100644
--- a/src/ui.c
+++ b/src/ui.c
@@ -51,6 +51,7 @@ struct kmscon_ui {
 	struct uterm_input *input;
 	struct kmscon_dlist video_list;
 	struct kmscon_terminal *term;
+	bool awake;
 };
 
 static void video_activate(struct ui_video *vid, struct uterm_display *disp)
@@ -167,6 +168,10 @@ static void input_event(struct uterm_input *input,
 			struct uterm_input_event *ev,
 			void *data)
 {
+	struct kmscon_ui *ui = data;
+
+	if (!ui->awake)
+		return;
 }
 
 static void terminal_event(struct kmscon_terminal *term,
@@ -259,3 +264,24 @@ void kmscon_ui_remove_video(struct kmscon_ui *ui, struct uterm_video *video)
 		}
 	}
 }
+
+void kmscon_ui_wake_up(struct kmscon_ui *ui)
+{
+	if (!ui || ui->awake)
+		return;
+
+	ui->awake = true;
+}
+
+void kmscon_ui_sleep(struct kmscon_ui *ui)
+{
+	if (!ui || !ui->awake)
+		return;
+
+	ui->awake = false;
+}
+
+bool kmscon_ui_is_awake(struct kmscon_ui *ui)
+{
+	return ui && ui->awake;
+}
diff --git a/src/ui.h b/src/ui.h
index 4b35fcd..548bb33 100644
--- a/src/ui.h
+++ b/src/ui.h
@@ -46,4 +46,8 @@ void kmscon_ui_free(struct kmscon_ui *ui);
 void kmscon_ui_add_video(struct kmscon_ui *ui, struct uterm_video *video);
 void kmscon_ui_remove_video(struct kmscon_ui *ui, struct uterm_video *video);
 
+void kmscon_ui_wake_up(struct kmscon_ui *ui);
+void kmscon_ui_sleep(struct kmscon_ui *ui);
+bool kmscon_ui_is_awake(struct kmscon_ui *ui);
+
 #endif /* KMSCON_UI_H */