From bb18e7680f426ff51e435afe78950082da42b643 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Tue, 16 Jun 2020 18:02:47 +0200
Subject: Support setting resolution received via loginrpc

---
 CMakeLists.txt   |  2 +-
 src/loginrpc.cpp | 35 +++++++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index fd7606f..28d953f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,7 +11,7 @@ set(CMAKE_BUILD_TYPE Debug)
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
 set(CMAKE_AUTOMOC ON)
 
-file(GLOB SRCS src/*.cpp)
+file(GLOB SRCS src/*.cpp src/*.c)
 file(GLOB UIS src/*.ui)
 
 FIND_PACKAGE(Qt5 COMPONENTS Widgets X11Extras Svg Network REQUIRED)
diff --git a/src/loginrpc.cpp b/src/loginrpc.cpp
index 4ced53e..dfb1757 100644
--- a/src/loginrpc.cpp
+++ b/src/loginrpc.cpp
@@ -1,8 +1,10 @@
 #include "loginrpc.h"
+#include "cvt.h"
 
 #include <QtNetwork/QTcpServer>
 #include <QtNetwork/QTcpSocket>
 #include <QDebug>
+#include <QProcess>
 
 LoginRpc::LoginRpc(int port, QObject *parent)
     : QObject(parent)
@@ -41,5 +43,38 @@ void LoginRpc::handleCommandV1(const QString &command)
     while (lines.count() < 3) {
         lines.append(QString());
     }
+    QString res = lines[2];
+    QStringList parts = res.split("x");
+    if (parts.size() == 2) {
+        int x = parts[0].toInt();
+        int y = parts[1].toInt();
+        if (x > 0 && y > 0) {
+            x = (x / 8) * 8;
+            y = (y / 8) * 8;
+            // TODO: Configurable min max sizes
+            if (x < 1024) x = 1024;
+            if (y < 720) y = 720;
+            if (x > 1920) x = 1920;
+            if (y > 1080) y = 1080;
+            QString name = QString("%1x%2").arg(x).arg(y);
+            mode *mode = vert_refresh(x, y, 60, 0, 0, 0);
+            QProcess p;
+            QStringList newmode = QStringList() << "--verbose" << "--newmode" << name << QString::asprintf("%.2f", mode->pclk)
+                                     << QString::number(mode->hr) << QString::number(mode->hss) << QString::number(mode->hse) << QString::number(mode->hfl)
+                                     << QString::number(mode->vr) << QString::number(mode->vss) << QString::number(mode->vse) << QString::number(mode->vfl)
+                                     << "-hsync" << "+vsync";
+            qDebug() << "Setting mode" << newmode;
+            p.setProcessChannelMode(QProcess::ForwardedChannels);
+            p.start("xrandr", newmode);
+            p.waitForFinished(2000);
+            p.kill();
+            p.start("xrandr", QStringList() << "--verbose" << "--addmode" << "VIRTUAL1" << name);
+            p.waitForFinished(2000);
+            p.kill();
+            p.start("xrandr", QStringList() << "--verbose" << "--output" << "VIRTUAL1" << "--mode" << name);
+            p.waitForFinished(2000);
+            p.kill();
+        }
+    }
     emit loginRequest(lines[0], lines[1], lines[2]);
 }
-- 
cgit v1.2.3-55-g7522