pts-core: Add support for detecting all available video modes

For doing this, use the xrandr_available_modes() PTS function.

1 files changed, 39 insertions, 0 deletions

diff --git a/pts-core/functions/pts-functions_system_graphics.php b/pts-core/functions/pts-functions_system_graphics.php
index f88cd37..489d658 100644
--- a/pts-core/functions/pts-functions_system_graphics.php
+++ b/pts-core/functions/pts-functions_system_graphics.php
@@ -178,6 +178,45 @@ function set_amd_pcsdb($attribute, $value)
 		$info = shell_exec("DISPLAY=:" . $DISPLAY . " aticonfig --set-pcs-val=" . $attribute . "," . $value . "  2>&1");
 	}
 }
+function xrandr_available_modes()
+{
+	$info = shell_exec("xrandr 2>&1");
+	$xrandr_lines = array_reverse(explode("\n", $info));
+	$available_modes = array();
+
+	foreach($xrandr_lines as $xrandr_mode)
+	{
+		$res = explode("x", $xrandr_mode);
+
+		if(count($res) == 2)
+		{
+			$res[0] = trim($res[0]);
+			$res[1] = trim($res[1]);
+
+			$res[0] = substr($res[0], strpos($res[0], " "));
+			$res[1] = substr($res[1], 0, strpos($res[1], " "));
+
+			if(is_numeric($res[0]) && is_numeric($res[1]) && $res[0] >= 800 && $res[1] >= 600)
+			{
+				$ratio = pts_trim_double($res[0] / $res[1], 2);
+				$this_mode = array($res[0], $res[1]);
+
+				$supported_ratios = array(1.60, 1.25, 1.33);
+				$ignore_modes = array(array(832, 624), array(1152, 864));
+
+				if(in_array($ratio, $supported_ratios) && !in_array($this_mode, $ignore_modes))
+					array_push($available_modes, $this_mode);
+			}
+		}
+	}
+
+	if(count($available_modes) < 2)
+	{
+		$available_modes = array(array(800, 600), array(1024, 768), array(1280, 1024), array(1680, 1050), array(1600, 1200), array(1920, 1080));
+	}
+
+	return $available_modes;
+}
 function xrandr_screen_resolution()
 {
 	$info = shell_exec("xrandr 2>&1 | grep \"*\"");