Qt: Fix tile and sprite views not always displaying at first

CHANGES

@@ -1,6 +1,7 @@
 0.7.1: (Future)
 Bugfixes:
  - Switch: Fix final cleanup (fixes mgba.io/i/1283)
+ - Qt: Fix tile and sprite views not always displaying at first
 Misc:
  - GBA Video: Improve sprite cycle counting (fixes mgba.io/i/1274)
 

src/platform/qt/ObjView.cpp

@@ -46,6 +46,9 @@ ObjView::ObjView(std::shared_ptr<CoreController> controller, QWidget* parent)
 	m_ui.mode->setFont(font);
 
 	connect(m_ui.tiles, &TilePainter::indexPressed, this, &ObjView::translateIndex);
+	connect(m_ui.tiles, &TilePainter::needsRedraw, this, [this]() {
+		updateTiles(true);
+	});
 	connect(m_ui.objId, static_cast<void (QSpinBox::*)(int)>(&QSpinBox::valueChanged), this, &ObjView::selectObj);
 	connect(m_ui.magnification, static_cast<void (QSpinBox::*)(int)>(&QSpinBox::valueChanged), [this]() {
 		updateTiles(true);

src/platform/qt/TilePainter.cpp

@@ -31,6 +31,7 @@ void TilePainter::resizeEvent(QResizeEvent* event) {
 	if (width() / m_size != m_backing.width() / m_size || m_backing.height() != calculatedHeight) {
 		m_backing = QPixmap(width(), calculatedHeight);
 		m_backing.fill(Qt::transparent);
+		emit needsRedraw();
 	}
 }
 

src/platform/qt/TilePainter.h

@@ -26,6 +26,7 @@ public slots:
 
 signals:
 	void indexPressed(int index);
+	void needsRedraw();
 
 protected:
 	void paintEvent(QPaintEvent*) override;

src/platform/qt/TileView.cpp

@@ -25,6 +25,9 @@ TileView::TileView(std::shared_ptr<CoreController> controller, QWidget* parent)
 	m_ui.tile->setController(controller);
 
 	connect(m_ui.tiles, &TilePainter::indexPressed, m_ui.tile, &AssetTile::selectIndex);
+	connect(m_ui.tiles, &TilePainter::needsRedraw, this, [this]() {
+		updateTiles(true);
+	});
 	connect(m_ui.paletteId, static_cast<void (QSpinBox::*)(int)>(&QSpinBox::valueChanged), this, &TileView::updatePalette);
 
 	switch (m_controller->platform()) {