[ThemeManager] Generate and apply immediately on change.

cockatrice/src/interface/palette_editor/palette_editor_dialog.cpp

@@ -138,8 +138,7 @@ void PaletteEditorDialog::setupUi()
 
     buttonBox = new QDialogButtonBox;
     resetBtn = buttonBox->addButton(tr("Reset"), QDialogButtonBox::ResetRole);
-    applyBtn = buttonBox->addButton(tr("Apply"), QDialogButtonBox::ApplyRole);
-    saveBtn = buttonBox->addButton(tr("Save && Apply"), QDialogButtonBox::AcceptRole);
+    saveBtn = buttonBox->addButton(tr("Save"), QDialogButtonBox::AcceptRole);
     closeBtn = buttonBox->addButton(QDialogButtonBox::Close);
 
     footerLayout->addWidget(revertButton);
@@ -149,10 +148,14 @@ void PaletteEditorDialog::setupUi()
 
     // Connections
     connect(schemeComboBox, &QComboBox::currentTextChanged, this, &PaletteEditorDialog::onSchemeChanged);
-    connect(quickSetupPanel, &QuickSetupPanel::generateRequested, this, &PaletteEditorDialog::onGenerateFromAccent);
+    autoApplyTimer = new QTimer(this);
+    autoApplyTimer->setSingleShot(true);
+    autoApplyTimer->setInterval(150);
+    connect(autoApplyTimer, &QTimer::timeout, this, &PaletteEditorDialog::onApply);
+    connect(quickSetupPanel, &QuickSetupPanel::valueChanged, this, &PaletteEditorDialog::onGenerateFromAccent);
+    connect(paletteGrid, &PaletteGridWidget::paletteChanged, this, [this] { autoApplyTimer->start(); });
     connect(revertButton, &QPushButton::clicked, this, &PaletteEditorDialog::onRevertToDefault);
     connect(resetBtn, &QPushButton::clicked, this, &PaletteEditorDialog::onReset);
-    connect(applyBtn, &QPushButton::clicked, this, &PaletteEditorDialog::onApply);
     connect(saveBtn, &QPushButton::clicked, this, &PaletteEditorDialog::onSave);
     connect(closeBtn, &QPushButton::clicked, this, &QDialog::reject);
 
@@ -186,10 +189,8 @@ void PaletteEditorDialog::retranslateUi()
     revertButton->setText(tr("↺  Revert to theme default"));
 
     resetBtn->setText(tr("Reset"));
-    applyBtn->setText(tr("Apply"));
-    saveBtn->setText(tr("Save && Apply"));
+    saveBtn->setText(tr("Save"));
     resetBtn->setToolTip(tr("Discard unsaved edits and restore the last saved palette"));
-    applyBtn->setToolTip(tr("Preview this palette without saving to disk"));
     saveBtn->setToolTip(tr("Write palette-%1.toml and reload the theme").arg(loadedScheme.toLower()));
 
     if (saveDir.isEmpty() || !QFileInfo(saveDir).isWritable()) {
@@ -242,7 +243,6 @@ void PaletteEditorDialog::onSchemeChanged(const QString &scheme)
     loadedScheme = scheme;
     paletteGrid->loadPalette(workingConfig.value(scheme));
     seedAccentFromScheme(scheme);
-    onApply();
 }
 
 void PaletteEditorDialog::onGenerateFromAccent(const QColor &accent, int intensity)

cockatrice/src/interface/palette_editor/palette_editor_dialog.h

@@ -7,6 +7,8 @@
 #include <QFrame>
 #include <QMap>
 
+class QTimer;
+
 class QLabel;
 class QComboBox;
 class QDialogButtonBox;
@@ -48,7 +50,6 @@ private:
     QComboBox *schemeComboBox = nullptr;
     QDialogButtonBox *buttonBox = nullptr;
     QPushButton *resetBtn = nullptr;
-    QPushButton *applyBtn = nullptr;
     QPushButton *saveBtn = nullptr;
     QPushButton *closeBtn = nullptr;
     QPushButton *revertButton = nullptr;
@@ -64,6 +65,8 @@ private:
     QMap<QString, PaletteConfig> workingConfig;
     QMap<QString, PaletteConfig> savedConfig;
 
+    QTimer *autoApplyTimer = nullptr;
+
 protected:
     void changeEvent(QEvent *e) override;
 };

cockatrice/src/interface/palette_editor/palette_grid_widget.cpp

@@ -117,6 +117,7 @@ void PaletteGridWidget::buildGrid(QWidget *host)
         for (int col = 0; col < 3; ++col) {
             auto group = ALL_GROUPS[col];
             auto *btn = new ColorButton(host);
+            connect(btn, &ColorButton::colorChanged, this, [this] { emit paletteChanged(); });
             colorButtons[group][role] = btn;
             grid->addWidget(btn, row + 1, col + 1, Qt::AlignHCenter | Qt::AlignVCenter);
         }

cockatrice/src/interface/palette_editor/palette_grid_widget.h

@@ -22,6 +22,9 @@ public:
     void loadPalette(const PaletteConfig &cfg);
     PaletteConfig currentPaletteConfig() const;
 
+signals:
+    void paletteChanged();
+
 private:
     void buildGrid(QWidget *host);
     void changeEvent(QEvent *e);

cockatrice/src/interface/palette_editor/quick_setup_panel.cpp

@@ -3,7 +3,6 @@
 #include <QApplication>
 #include <QHBoxLayout>
 #include <QLabel>
-#include <QPushButton>
 #include <QSlider>
 
 QuickSetupPanel::QuickSetupPanel(QWidget *parent) : QWidget(parent)
@@ -41,8 +40,6 @@ QuickSetupPanel::QuickSetupPanel(QWidget *parent) : QWidget(parent)
     intensityPercentageLabel->setFixedWidth(34);
     intensityPercentageLabel->setAlignment(Qt::AlignRight | Qt::AlignVCenter);
 
-    generateButton = new QPushButton(this);
-
     layout->addWidget(heading);
     layout->addSpacing(6);
     layout->addWidget(accentLabel);
@@ -54,12 +51,13 @@ QuickSetupPanel::QuickSetupPanel(QWidget *parent) : QWidget(parent)
     layout->addWidget(labelHigh);
     layout->addWidget(intensityPercentageLabel);
     layout->addStretch();
-    layout->addWidget(generateButton);
 
-    connect(intensitySlider, &QSlider::valueChanged, this,
-            [this](int v) { intensityPercentageLabel->setText(tr("%1%").arg(v)); });
-    connect(generateButton, &QPushButton::clicked, this,
-            [this] { emit generateRequested(accentButton->getColor(), intensitySlider->value()); });
+    connect(intensitySlider, &QSlider::valueChanged, this, [this](int v) {
+        intensityPercentageLabel->setText(tr("%1%").arg(v));
+        emit valueChanged(accentButton->getColor(), v);
+    });
+    connect(accentButton, &ColorButton::colorChanged, this,
+            [this](const QColor &c) { emit valueChanged(c, intensitySlider->value()); });
     retranslateUi();
 }
 
@@ -77,10 +75,6 @@ void QuickSetupPanel::retranslateUi()
                                    "30–70  Accented — buttons, tooltips, and borders join in\n"
                                    "70–100 Full colour — backgrounds, everything"));
     intensityPercentageLabel->setText(tr("70%"));
-
-    generateButton->setText(tr("Generate ↓"));
-    generateButton->setToolTip(tr("Derive all palette roles from the accent colour above.\n"
-                                  "Fine-tune individual colours in the grid afterwards."));
 }
 
 QColor QuickSetupPanel::accentColor() const

cockatrice/src/interface/palette_editor/quick_setup_panel.h

@@ -5,7 +5,6 @@
 
 #include <QWidget>
 
-class QPushButton;
 class QHBoxLayout;
 class QLabel;
 class QSlider;
@@ -16,12 +15,11 @@ class QSlider;
  *
  * The panel contains:
  * - an accent color picker,
- * - an intensity slider,
- * - and a generate button.
+ * - an intensity slider.
  *
- * When the user clicks the generate button, the panel emits
- * generateRequested() with the currently selected accent color
- * and intensity value.
+ * Whenever either value changes the panel emits valueChanged() with
+ * the current accent colour and intensity, which the parent dialog
+ * uses to auto-apply the generated palette.
  *
  * Typically used together with PaletteGenerator::fromAccent()
  * to quickly generate color schemes from a chosen accent color.
@@ -71,12 +69,12 @@ public:
 
 signals:
     /**
-     * @brief Emitted when the user requests palette generation.
+     * @brief Emitted whenever the accent colour or intensity changes.
      *
-     * @param accent The selected accent color.
-     * @param intensity The selected intensity value.
+     * The parent dialog consumes this to auto-apply the generated palette
+     * without requiring an explicit Generate click.
      */
-    void generateRequested(QColor accent, int intensity);
+    void valueChanged(QColor accent, int intensity);
 
 private:
     QHBoxLayout *layout;
@@ -88,7 +86,6 @@ private:
     QLabel *labelHigh;
     QSlider *intensitySlider;
     QLabel *intensityPercentageLabel;
-    QPushButton *generateButton;
 };
 
 #endif // COCKATRICE_QUICK_SETUP_PANEL_H