From 78de384cc4eb1870569ec51c911031d47bf4fdd8 Mon Sep 17 00:00:00 2001
From: "Joakim L. Gilje" <jgilje@jgilje.net>
Date: Mon, 6 Dec 2021 21:58:41 +0100
Subject: [PATCH] scaling actions

---
 src/qt/qt_mainwindow.cpp | 50 ++++++++++++++++++++++++++++++++++++++++
 src/qt/qt_mainwindow.hpp |  4 ++++
 src/qt/qt_mainwindow.ui  | 12 ++++++++++
 3 files changed, 66 insertions(+)

diff --git a/src/qt/qt_mainwindow.cpp b/src/qt/qt_mainwindow.cpp
index d113b9296..e64316f5f 100644
--- a/src/qt/qt_mainwindow.cpp
+++ b/src/qt/qt_mainwindow.cpp
@@ -102,6 +102,7 @@ MainWindow::MainWindow(QWidget *parent) :
     ui->actionKeyboard_requires_capture->setChecked(kbd_req_capture);
     ui->actionRight_CTRL_is_left_ALT->setChecked(rctrl_is_lalt);
     ui->actionResizable_window->setChecked(vid_resize > 0);
+    ui->menuWindow_scale_factor->setEnabled(vid_resize == 0);
     switch (vid_api) {
     case 0:
         ui->stackedWidget->setCurrentIndex(0);
@@ -116,6 +117,20 @@ MainWindow::MainWindow(QWidget *parent) :
         ui->actionHardware_Renderer_OpenGL_ES->setChecked(true);
         break;
     }
+    switch (scale) {
+    case 0:
+        ui->action0_5x->setChecked(true);
+        break;
+    case 1:
+        ui->action1x->setChecked(true);
+        break;
+    case 2:
+        ui->action1_5x->setChecked(true);
+        break;
+    case 3:
+        ui->action2x->setChecked(true);
+        break;
+    }
 
     setFocusPolicy(Qt::StrongFocus);
     ui->gles->setFocusPolicy(Qt::NoFocus);
@@ -847,6 +862,7 @@ void MainWindow::on_actionResizable_window_triggered(bool checked) {
     } else {
         vid_resize = 0;
     }
+    ui->menuWindow_scale_factor->setEnabled(! checked);
     emit resizeContents(scrnsz_x, scrnsz_y);
 }
 
@@ -865,3 +881,37 @@ void MainWindow::on_actionInverted_VGA_monitor_triggered() {
     video_toggle_option(ui->actionInverted_VGA_monitor, &invert_display);
     video_copy = (video_grayscale || invert_display) ? video_transform_copy : memcpy;
 }
+
+static void update_scaled_checkboxes(Ui::MainWindow* ui, QAction* selected) {
+    ui->action0_5x->setChecked(ui->action0_5x == selected);
+    ui->action1x->setChecked(ui->action1x == selected);
+    ui->action1_5x->setChecked(ui->action1_5x == selected);
+    ui->action2x->setChecked(ui->action2x == selected);
+
+    reset_screen_size();
+    device_force_redraw();
+    video_force_resize_set(1);
+    doresize = 1;
+    config_save();
+}
+
+void MainWindow::on_action0_5x_triggered() {
+    scale = 0;
+    update_scaled_checkboxes(ui, ui->action0_5x);
+}
+
+void MainWindow::on_action1x_triggered() {
+    scale = 1;
+    update_scaled_checkboxes(ui, ui->action1x);
+}
+
+void MainWindow::on_action1_5x_triggered() {
+    scale = 2;
+    update_scaled_checkboxes(ui, ui->action1_5x);
+}
+
+void MainWindow::on_action2x_triggered() {
+    scale = 3;
+    update_scaled_checkboxes(ui, ui->action2x);
+}
+
diff --git a/src/qt/qt_mainwindow.hpp b/src/qt/qt_mainwindow.hpp
index acab69f95..97ac840d6 100644
--- a/src/qt/qt_mainwindow.hpp
+++ b/src/qt/qt_mainwindow.hpp
@@ -58,6 +58,10 @@ private slots:
     void on_actionSoftware_Renderer_triggered();
     void on_actionResizable_window_triggered(bool checked);
     void on_actionInverted_VGA_monitor_triggered();
+    void on_action0_5x_triggered();
+    void on_action1x_triggered();
+    void on_action1_5x_triggered();
+    void on_action2x_triggered();
 
     void refreshMediaMenu();
     void showMessage_(const QString& header, const QString& message);
diff --git a/src/qt/qt_mainwindow.ui b/src/qt/qt_mainwindow.ui
index b85e14b4d..47a52eed5 100644
--- a/src/qt/qt_mainwindow.ui
+++ b/src/qt/qt_mainwindow.ui
@@ -315,21 +315,33 @@
    </property>
   </action>
   <action name="action0_5x">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
    <property name="text">
     <string>0.5x</string>
    </property>
   </action>
   <action name="action1x">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
    <property name="text">
     <string>1x</string>
    </property>
   </action>
   <action name="action1_5x">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
    <property name="text">
     <string>1.5x</string>
    </property>
   </action>
   <action name="action2x">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
    <property name="text">
     <string>2x</string>
    </property>