From 2a02487ff00341fcc07023b37ec527c2694fa4c1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tor=20Arne=20Vestb=C3=B8?= <tor.arne.vestbo@qt.io>
Date: Fri, 20 Dec 2019 17:51:01 +0100
Subject: Move tracking of widget specific app palettes to QApplicationPrivate

Change-Id: I43cc25207026f174e46534baedf08e0c300728d1
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
---
 src/widgets/kernel/qapplication.cpp | 42 ++++++++++++++++++-------------------
 src/widgets/kernel/qapplication_p.h |  6 +++---
 2 files changed, 23 insertions(+), 25 deletions(-)

diff --git a/src/widgets/kernel/qapplication.cpp b/src/widgets/kernel/qapplication.cpp
index d28a425c43..28575a20f5 100644
--- a/src/widgets/kernel/qapplication.cpp
+++ b/src/widgets/kernel/qapplication.cpp
@@ -414,11 +414,9 @@ bool Q_WIDGETS_EXPORT qt_tab_all_widgets()
 }
 
 // ######## move to QApplicationPrivate
-// Default application palettes and fonts (per widget type)
-Q_GLOBAL_STATIC(PaletteHash, app_palettes)
+// Default fonts (per widget type)
 Q_GLOBAL_STATIC(FontHash, app_fonts)
-// Exported accessors for use outside of this file
-PaletteHash *qt_app_palettes_hash() { return app_palettes(); }
+// Exported accessor for use outside of this file
 FontHash *qt_app_fonts_hash() { return app_fonts(); }
 
 QWidgetList *QApplicationPrivate::popupWidgets = 0;        // has keyboard input focus
@@ -643,7 +641,8 @@ void QApplicationPrivate::initializeWidgetPaletteHash()
     QPlatformTheme *platformTheme = QGuiApplicationPrivate::platformTheme();
     if (!platformTheme)
         return;
-    app_palettes()->clear();
+
+    widgetPalettes.clear();
 
     setPossiblePalette(platformTheme->palette(QPlatformTheme::ToolButtonPalette), "QToolButton");
     setPossiblePalette(platformTheme->palette(QPlatformTheme::ButtonPalette), "QAbstractButton");
@@ -802,7 +801,7 @@ QApplication::~QApplication()
     delete QApplicationPrivate::app_pal;
     QApplicationPrivate::app_pal = 0;
     clearSystemPalette();
-    app_palettes()->clear();
+    QApplicationPrivate::widgetPalettes.clear();
 
     delete QApplicationPrivate::sys_font;
     QApplicationPrivate::sys_font = 0;
@@ -1315,6 +1314,8 @@ void QApplication::setGlobalStrut(const QSize& strut)
     QApplicationPrivate::app_strut = strut;
 }
 
+// Widget specific palettes
+QApplicationPrivate::PaletteHash QApplicationPrivate::widgetPalettes;
 
 /*!
     \fn QPalette QApplication::palette(const QWidget* widget)
@@ -1329,15 +1330,13 @@ void QApplication::setGlobalStrut(const QSize& strut)
 */
 QPalette QApplication::palette(const QWidget* w)
 {
-    typedef PaletteHash::const_iterator PaletteHashConstIt;
-
-    PaletteHash *hash = app_palettes();
-    if (w && hash && hash->size()) {
-        PaletteHashConstIt it = hash->constFind(w->metaObject()->className());
-        const PaletteHashConstIt cend = hash->constEnd();
+    auto &widgetPalettes = QApplicationPrivate::widgetPalettes;
+    if (w && !widgetPalettes.isEmpty()) {
+        auto it = widgetPalettes.constFind(w->metaObject()->className());
+        const auto cend = widgetPalettes.constEnd();
         if (it != cend)
             return *it;
-        for (it = hash->constBegin(); it != cend; ++it) {
+        for (it = widgetPalettes.constBegin(); it != cend; ++it) {
             if (w->inherits(it.key()))
                 return it.value();
         }
@@ -1354,10 +1353,10 @@ QPalette QApplication::palette(const QWidget* w)
 */
 QPalette QApplication::palette(const char *className)
 {
-    PaletteHash *hash = app_palettes();
-    if (className && hash && hash->size()) {
-        QHash<QByteArray, QPalette>::ConstIterator it = hash->constFind(className);
-        if (it != hash->constEnd())
+    auto &widgetPalettes = QApplicationPrivate::widgetPalettes;
+    if (className && !widgetPalettes.isEmpty()) {
+        auto it = widgetPalettes.constFind(className);
+        if (it != widgetPalettes.constEnd())
             return *it;
     }
 
@@ -1372,7 +1371,6 @@ void QApplicationPrivate::setPalette_helper(const QPalette &palette, const char*
         QApplicationPrivate::app_style->polish(pal); // NB: non-const reference
 
     bool all = false;
-    PaletteHash *hash = app_palettes();
     if (!className) {
         if (!QGuiApplicationPrivate::setPalette(pal))
             return;
@@ -1380,13 +1378,13 @@ void QApplicationPrivate::setPalette_helper(const QPalette &palette, const char*
         if (!QApplicationPrivate::sys_pal || !palette.isCopyOf(*QApplicationPrivate::sys_pal))
             QCoreApplication::setAttribute(Qt::AA_SetPalette);
 
-        if (hash && hash->size()) {
+        if (!widgetPalettes.isEmpty()) {
             all = true;
             if (clearWidgetPaletteHash)
-                hash->clear();
+                widgetPalettes.clear();
         }
-    } else if (hash) {
-        hash->insert(className, pal);
+    } else {
+        widgetPalettes.insert(className, pal);
     }
 
     if (qApp)
diff --git a/src/widgets/kernel/qapplication_p.h b/src/widgets/kernel/qapplication_p.h
index 79d06ed98c..8751cc772b 100644
--- a/src/widgets/kernel/qapplication_p.h
+++ b/src/widgets/kernel/qapplication_p.h
@@ -94,9 +94,6 @@ extern QClipboard *qt_clipboard;
 typedef QHash<QByteArray, QFont> FontHash;
 Q_WIDGETS_EXPORT FontHash *qt_app_fonts_hash();
 
-typedef QHash<QByteArray, QPalette> PaletteHash;
-PaletteHash *qt_app_palettes_hash();
-
 #define QApplicationPrivateBase QGuiApplicationPrivate
 
 class Q_WIDGETS_EXPORT QApplicationPrivate : public QApplicationPrivateBase
@@ -193,6 +190,9 @@ public:
     static void initializeWidgetFontHash();
     static void setSystemFont(const QFont &font);
 
+    using PaletteHash = QHash<QByteArray, QPalette>;
+    static PaletteHash widgetPalettes;
+
     static QApplicationPrivate *instance() { return self; }
 
 #ifdef QT_KEYPAD_NAVIGATION
-- 
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