From 770f0485b037e4f4fa7e9a885710d5318a3cd39e Mon Sep 17 00:00:00 2001
From: Roy Qu <royqh1979@gmail.com>
Date: Sun, 1 Dec 2024 08:54:31 +0800
Subject: [PATCH] - enhancement: Auto scale the main ui & choose theme dialog
 at the first run.

---
 NEWS.md                                   |  3 ++-
 RedPandaIDE/mainwindow.cpp                | 11 +++++++++++
 RedPandaIDE/widgets/choosethemedialog.cpp | 22 ++++++++++++++++++++++
 RedPandaIDE/widgets/choosethemedialog.ui  |  4 ++--
 4 files changed, 37 insertions(+), 3 deletions(-)

diff --git a/NEWS.md b/NEWS.md
index f2cf7d1af..b4cec4f76 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,7 +1,8 @@
 Red Panda C++ Version 3.3
   - enhancement: Auto indent contents in parenthesis.
   - fix: Use "/" instead of "\" in the path of compile target. 
-  - fix: crash when debug.
+  - fix: Qt 6 version crashed when debug.
+  - enhancement: Auto scale the main ui & choose theme dialog at the first run.
 
 Red Panda C++ Version 3.2
 
diff --git a/RedPandaIDE/mainwindow.cpp b/RedPandaIDE/mainwindow.cpp
index aa19f2d81..4bc25acf3 100644
--- a/RedPandaIDE/mainwindow.cpp
+++ b/RedPandaIDE/mainwindow.cpp
@@ -1134,6 +1134,17 @@ void MainWindow::applyUISettings()
         ui->tabMessages->setShrinkedFlag(true);
     if (settings.shrinkExplorerTabs())
         ui->tabExplorer->setShrinkedFlag(true);
+#if defined(Q_OS_WIN) && QT_VERSION_MAJOR == 5
+    if (settings.mainWindowGeometry().isEmpty()) {
+        //first run, adjust size with dpi
+        int w = width()*screenDPI()/96;
+        int h = height()*screenDPI()/96;
+        resize(w,h);
+        ui->tabMessages->setBeforeShrinkSize(settings.messagesTabsSize()*screenDPI()/96);
+        ui->tabExplorer->setBeforeShrinkSize(settings.explorerTabsSize()*screenDPI()/96);
+    }
+
+#endif
 }
 
 QFileSystemWatcher *MainWindow::fileSystemWatcher()
diff --git a/RedPandaIDE/widgets/choosethemedialog.cpp b/RedPandaIDE/widgets/choosethemedialog.cpp
index 8d50eb57e..77a587738 100644
--- a/RedPandaIDE/widgets/choosethemedialog.cpp
+++ b/RedPandaIDE/widgets/choosethemedialog.cpp
@@ -17,11 +17,33 @@
 #include "choosethemedialog.h"
 #include "ui_choosethemedialog.h"
 
+#include <QFontMetrics>
+#include <QScreen>
+
 ChooseThemeDialog::ChooseThemeDialog(QWidget *parent) :
     QDialog(parent),
     ui(new Ui::ChooseThemeDialog)
 {
     ui->setupUi(this);
+#if defined(Q_OS_WIN) && QT_VERSION_MAJOR == 5
+        //first run, adjust size with dpi
+    int dpi = qApp->primaryScreen()->logicalDotsPerInch();
+//    int w = width()*dpi/96;
+//    int h = height()*dpi/96;
+//    ui->lblDark
+    double dpr = 96.0 / qApp->primaryScreen()->logicalDotsPerInch();
+    QPixmap p = ui->lblLight->pixmap(Qt::ReturnByValue);
+    p.setDevicePixelRatio(dpr);
+    ui->lblLight->setPixmap(p);
+    p = ui->lblDark->pixmap(Qt::ReturnByValue);
+    p.setDevicePixelRatio(dpr);
+    ui->lblDark->setPixmap(p);
+    QFontMetrics fm{font()};
+    QFont f{font()};
+
+    f.setPixelSize(fm.height()*dpi/96);
+    setFont(f);
+#endif
 #ifdef ENABLE_LUA_ADDON
     ui->rbAuto->setVisible(true);
 #else
diff --git a/RedPandaIDE/widgets/choosethemedialog.ui b/RedPandaIDE/widgets/choosethemedialog.ui
index 96b9360bb..24bd037d6 100644
--- a/RedPandaIDE/widgets/choosethemedialog.ui
+++ b/RedPandaIDE/widgets/choosethemedialog.ui
@@ -21,7 +21,7 @@
      </property>
      <layout class="QGridLayout" name="gridLayout">
       <item row="2" column="1">
-       <widget class="QLabel" name="label_2">
+       <widget class="QLabel" name="lblLight">
         <property name="frameShape">
          <enum>QFrame::Box</enum>
         </property>
@@ -37,7 +37,7 @@
        </widget>
       </item>
       <item row="2" column="0">
-       <widget class="QLabel" name="label">
+       <widget class="QLabel" name="lblDark">
         <property name="frameShape">
          <enum>QFrame::Box</enum>
         </property>