Add buttons to change scale when resizing maps

CHANGELOG.md

@@ -5,7 +5,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project somewhat adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).  The MAJOR version number is bumped when there are **"Breaking Changes"** in the pret projects. For more on this, see [the manual page on breaking changes](https://huderlem.github.io/porymap/manual/breaking-changes.html).
 
 ## [Unreleased]
-Nothing, yet.
+### Changed
+- The scale of the map can now be changed while resizing the map.
+
+### Fixed
+- Fix small maps being difficult to see while resizing.
 
 ## [6.0.0] - 2025-05-26
 ### Breaking Changes

include/ui/resizelayoutpopup.h

@@ -91,6 +91,8 @@ protected:
         this->resetPosition();
     }
 
+    void keyPressEvent(QKeyEvent *) override;
+
 private slots:
     void on_spinBox_width_valueChanged(int value);
     void on_spinBox_height_valueChanged(int value);
@@ -107,6 +109,9 @@ private:
     BoundedPixmapItem *layoutPixmap = nullptr;
 
     QPointer<CheckeredBgScene> scene = nullptr;
+
+    void zoom(qreal delta);
+    qreal scale = 1.0;
 };
 
 #endif // RESIZELAYOUTPOPUP_H

src/ui/resizelayoutpopup.cpp

@@ -99,7 +99,7 @@ void ResizeLayoutPopup::resetPosition() {
 }
 
 void ResizeLayoutPopup::on_buttonBox_clicked(QAbstractButton *button) {
-    if(button == this->ui->buttonBox->button(QDialogButtonBox::Reset) ) {
+    if (button == this->ui->buttonBox->button(QDialogButtonBox::Reset) ) {
         this->scene->clear();
         setupLayoutView();
     }
@@ -170,6 +170,8 @@ void ResizeLayoutPopup::setupLayoutView() {
     layoutPixmap->setBoundary(outline);
     emit this->outline->rectUpdated(outline->rect().toAlignedRect());
 
+    this->scale = 1.0;
+
     QRectF rect = this->outline->rect();
     const int marginSize = 10 * 16; // Leave a margin of 10 metatiles around the map
     rect += QMargins(marginSize, marginSize, marginSize, marginSize);
@@ -203,3 +205,20 @@ QMargins ResizeLayoutPopup::getResult() {
 QSize ResizeLayoutPopup::getBorderResult() {
     return QSize(this->ui->spinBox_borderWidth->value(), this->ui->spinBox_borderHeight->value());
 }
+
+void ResizeLayoutPopup::zoom(qreal delta) {
+    if (this->scale + delta < 0.05 || this->scale + delta > 3.0)
+        return;
+    this->scale += delta;
+    this->ui->graphicsView->scale(1.0 + delta, 1.0 + delta);
+}
+
+void ResizeLayoutPopup::keyPressEvent(QKeyEvent *event) {
+    if (event->key() == Qt::Key_Plus || event->key() == Qt::Key_Equal) {
+        zoom(+0.1);
+    } else if (event->key() == Qt::Key_Minus || event->key() == Qt::Key_Underscore) {
+        zoom(-0.1);
+    } else {
+        QDialog::keyPressEvent(event);
+    }
+}