From: Ira W. Snyder <devel@irasnyder.com>
Date: Mon, 14 Jan 2008 08:24:43 +0000 (-0800)
Subject: [Terminal] Add transparency support
X-Git-Url: https://irasnyder.com/gitweb/?a=commitdiff_plain;h=880eae5226f60d49537200834627fd5af6ee89ae;p=tilda-gobject.git

[Terminal] Add transparency support

This adds the ability to specify transparency. With the earlier TildaWindow
changes, this should give true transparency in a composited environment,
but falls back to fake transparency if true transparency is not available.
---

diff --git a/tilda-terminal.c b/tilda-terminal.c
index d1533db..ec76061 100644
--- a/tilda-terminal.c
+++ b/tilda-terminal.c
@@ -175,6 +175,35 @@ tilda_terminal_window_title_changed_cb (GtkWidget *widget, gpointer data)
 	g_free (new_title);
 }
 
+/**
+ * Set the given TildaTerminal to the appropriate transparency level
+ * based on the self->transparency_percent member. */
+static void
+tilda_terminal_set_transparent (TildaTerminal *self)
+{
+	TildaWindow *parent_window = TILDA_WINDOW(self->parent_window);
+	gdouble temp;
+
+	/* Convert the transparency to VTE's format */
+	temp = ((gdouble) self->transparency_percent) / 100.0;
+
+	if (self->transparency_percent > 0)
+	{
+		vte_terminal_set_background_saturation (VTE_TERMINAL(self->vte_term), temp);
+		vte_terminal_set_opacity (VTE_TERMINAL(self->vte_term), (1.0 - temp) * 0xffff);
+
+		/* Use fake transparency if necessary */
+		vte_terminal_set_background_transparent (VTE_TERMINAL(self->vte_term),
+												 !parent_window->have_real_transparency);
+		return;
+	}
+
+	/* Turn off transparency */
+	vte_terminal_set_background_saturation (VTE_TERMINAL(self->vte_term), 0);
+	vte_terminal_set_opacity (VTE_TERMINAL(self->vte_term), 0xffff);
+	vte_terminal_set_background_transparent (VTE_TERMINAL(self->vte_term), FALSE);
+}
+
 /*******************************************************************************
  * All GObject stuff is below. You probably don't need to change this...
  ******************************************************************************/
@@ -298,6 +327,7 @@ tilda_terminal_set_property (GObject      *object,
 
 		case TILDA_TERMINAL_TRANSPARENCY_PERCENT:
 			self->transparency_percent = g_value_get_int (value);
+			tilda_terminal_set_transparent (self);
 			g_print ("terminal transp percent: %d\n", self->transparency_percent);
 			break;