From 1ff87e8ece02992554f515a356b047ad425f255c Mon Sep 17 00:00:00 2001
From: Simon Vieille <simon@deblan.fr>
Date: Tue, 26 Jan 2021 08:50:51 +0100
Subject: [PATCH] add screen option: xrandr_extra; add test mode (-n)

---
 monitordisplay | 54 ++++++++++++++++++++++++++++++++------------------
 1 file changed, 35 insertions(+), 19 deletions(-)

diff --git a/monitordisplay b/monitordisplay
index 7c87168..0d5bf2b 100755
--- a/monitordisplay
+++ b/monitordisplay
@@ -36,6 +36,8 @@ function filterScreen(array $data)
         'name' => null,
         'resolutionX' => null,
         'resolutionY' => null,
+        'dpi' => null,
+        'xrandr_extra' => null,
     ];
 
     return filter($data, $default);
@@ -85,7 +87,7 @@ function getCurrentMode()
 
 function build(array $modes, array $screens, $mode, $toggle, array $currentMode, $addOff)
 {
-    if ($mode === null) {
+    if (null === $mode) {
         if (!array_key_exists($currentMode['mode'], $modes)) {
             return;
         }
@@ -101,29 +103,25 @@ function build(array $modes, array $screens, $mode, $toggle, array $currentMode,
         $mode = $modes[$mode];
     }
 
-    if ($toggle !== false) {
-        if ($currentMode['mode'] === null) {
-            return;
-        }
-
-        if ($currentMode['config'] === null) {
-            return;
-        }
-
+    if (false !== $toggle) {
         $configs = $mode['config'];
         $configsKeys = array_keys($configs);
 
+        if (null === $currentMode['mode']) {
+            $currentMode['config'] = $configsKeys[0];
+        }
+
         if (!array_key_exists($currentMode['config'], $mode['config'])) {
             $currentMode['config'] = $configsKeys[0];
         }
 
-        if ($toggle === true) {
+        if (true === $toggle) {
             foreach ($configsKeys as $k => $key) {
                 if ($key == $currentMode['config']) {
                     $currentKey = $k;
                 }
             }
-;
+
             $config = $configsKeys[($currentKey + 1) % count($configsKeys)];
         } elseif (array_key_exists($toggle, $configs)) {
             $config = $toggle;
@@ -157,6 +155,8 @@ function build(array $modes, array $screens, $mode, $toggle, array $currentMode,
         $name = $tScreen['name'];
         $resolutionX = $tScreen['resolutionX'];
         $resolutionY = $tScreen['resolutionY'];
+        $dpi = $tScreen['dpi'];
+        $xrandrExtra = $tScreen['xrandr_extra'];
 
         if (empty($name) || empty($resolutionX) || empty($resolutionY)) {
             error(sprintf('Invalid screen configuration "%s"', $screen));
@@ -171,12 +171,20 @@ function build(array $modes, array $screens, $mode, $toggle, array $currentMode,
             $command[] = '--primary';
         }
 
+        if (null !== $dpi) {
+            $command[] = sprintf('--dpi %d', $dpi);
+        }
+
         $command[] = '--mode';
         $command[] = sprintf('%dx%d', $resolutionX, $resolutionY);
 
         $command[] = '--pos';
         $command[] = sprintf('%dx%d', $x, 0);
         $x += (int) $resolutionX;
+
+        if (null !== $xrandrExtra) {
+            $command[] = $xrandrExtra;
+        }
     }
 
     if ($addOff) {
@@ -211,7 +219,7 @@ foreach ($files as $file) {
     if (file_exists($file)) {
         $parsing = @parse_ini_file($file, true);
 
-        if ($parsing === false) {
+        if (false === $parsing) {
             error(sprintf('The file "%s" is not a valid ini file', $file));
 
             continue;
@@ -238,13 +246,13 @@ $modes = [];
 foreach ($config as $section => $values) {
     $type = explode(':', $section);
 
-    if (count($type) !== 2) {
+    if (2 !== count($type)) {
         error(sprintf('Invalid section "%s". Ignored', $section));
     }
 
-    if ($type[0] === 'screen') {
+    if ('screen' === $type[0]) {
         $screens[$type[1]] = filterScreen($values);
-    } elseif ($type[0] === 'mode') {
+    } elseif ('mode' === $type[0]) {
         $modes[$type[1]] = filterMode($values);
     } else {
         error(sprintf('Section "%s" ignored', $section));
@@ -261,10 +269,11 @@ if (empty($modes)) {
     die(1);
 }
 
-$options = getopt('m:t::s');
+$options = getopt('m:t::sn');
 $mode = isset($options['m']) ? $options['m'] : null;
 $toggle = isset($options['t']) ? (false === $options['t'] ? true : $options['t']) : false;
 $addOff = !isset($options['s']);
+$isTest = isset($options['n']);
 $build = build($modes, $screens, $mode, $toggle, $currentMode, $addOff);
 
 if (!empty($build)) {
@@ -273,15 +282,22 @@ if (!empty($build)) {
     $commands = [
         $build['mode']['before_command'],
         $build['command'],
-        $build['mode']['after_command']
+        $build['mode']['after_command'],
     ];
 
     $output = [];
 
+    if ($isTest) {
+        $output[] = 'Mode TEST';
+    }
+
     foreach ($commands as $command) {
         if (!empty($command)) {
             $output[] = 'Command: '.$command;
-            exec($command, $output);
+
+            if (!$isTest) {
+                exec($command, $output);
+            }
         }
     }