MainWindow/PaletteWidget: Move palette/translation handling to Palett…

…eWidget

Currently we are splitting the palette/translation handling between
`MainWindow` class and `PaletteWidget`, so this patch changes that
- it moves the whole logic that was contained in MainWindow to
PaletteWidget and unifies it, so all of the handling happens here.

source/d1formats/d1trn.cpp

@@ -1,13 +1,13 @@
 #include "d1trn.h"
 
 D1Trn::D1Trn(D1Pal *pal)
-    : palette(QPointer<D1Pal>(pal))
+    : palette(pal)
 {
 }
 
 bool D1Trn::load(QString filePath)
 {
-    if (this->palette.isNull())
+    if (this->palette == nullptr)
         return false;
 
     QFile file = QFile(filePath);
@@ -73,6 +73,16 @@ QString D1Trn::getFilePath()
     return this->trnFilePath;
 }
 
+QString D1Trn::getDefaultPath() const
+{
+    return IDENTITY_PATH;
+}
+
+QString D1Trn::getDefaultName() const
+{
+    return IDENTITY_NAME;
+}
+
 quint8 D1Trn::getTranslation(quint8 index)
 {
     return this->translations[index];

source/d1formats/d1trn.h

@@ -6,7 +6,7 @@
 
 #define D1TRN_TRANSLATIONS 256
 
-class D1Trn : public QObject {
+class D1Trn final : public D1Pal {
     Q_OBJECT
 
 public:
@@ -17,15 +17,19 @@ class D1Trn : public QObject {
     D1Trn(D1Pal *pal);
     ~D1Trn() = default;
 
-    bool load(QString);
-    bool save(QString);
+    bool load(QString filepath) override;
+    bool save(QString filepath) override;
 
-    bool isModified() const;
+    [[nodiscard]] bool isModified() const override;
 
     void refreshResultingPalette();
     QColor getResultingColor(quint8);
 
-    QString getFilePath();
+    QString getFilePath() override;
+
+    [[nodiscard]] QString getDefaultPath() const override;
+    [[nodiscard]] QString getDefaultName() const override;
+
     quint8 getTranslation(quint8);
     void setTranslation(quint8, quint8);
     void setPalette(D1Pal *pal);
@@ -35,6 +39,6 @@ class D1Trn : public QObject {
     QString trnFilePath;
     bool modified;
     quint8 translations[D1TRN_TRANSLATIONS];
-    QPointer<D1Pal> palette;
+    D1Pal* palette = nullptr;
     D1Pal resultingPalette;
 };