Merge pull request #579 from GriffinRichards/hover-te

Display tile ID when hovering over Tileset Editor layer view

include/ui/metatilelayersitem.h

@@ -14,25 +14,33 @@ public:
         this->primaryTileset = primaryTileset;
         this->secondaryTileset = secondaryTileset;
         this->clearLastModifiedCoords();
+        this->clearLastHoveredCoords();
+        setAcceptHoverEvents(true);
     }
     void draw();
     void setTilesets(Tileset*, Tileset*);
     void setMetatile(Metatile*);
     void clearLastModifiedCoords();
+    void clearLastHoveredCoords();
     bool showGrid;
 private:
     Metatile* metatile;
     Tileset *primaryTileset;
     Tileset *secondaryTileset;
-    QPoint prevChangedTile;
-    void getBoundedCoords(QPointF, int*, int*);
+    QPoint prevChangedPos;
+    QPoint prevHoveredPos;
+    QPoint getBoundedPos(const QPointF &);
 signals:
     void tileChanged(int, int);
     void selectedTilesChanged(QPoint, int, int);
+    void hoveredTileChanged(uint16_t);
+    void hoveredTileCleared();
 protected:
     void mousePressEvent(QGraphicsSceneMouseEvent*);
     void mouseMoveEvent(QGraphicsSceneMouseEvent*);
     void mouseReleaseEvent(QGraphicsSceneMouseEvent*);
+    void hoverMoveEvent(QGraphicsSceneHoverEvent*);
+    void hoverLeaveEvent(QGraphicsSceneHoverEvent*);
 };
 
 #endif // METATILELAYERSITEM_H

src/ui/metatilelayersitem.cpp

@@ -3,22 +3,22 @@
 #include "imageproviders.h"
 #include <QPainter>
 
-void MetatileLayersItem::draw() {
-    static const QList<QPoint> tileCoords = QList<QPoint>{
-        QPoint(0, 0),
-        QPoint(16, 0),
-        QPoint(0, 16),
-        QPoint(16, 16),
-        QPoint(32, 0),
-        QPoint(48, 0),
-        QPoint(32, 16),
-        QPoint(48, 16),
-        QPoint(64, 0),
-        QPoint(80, 0),
-        QPoint(64, 16),
-        QPoint(80, 16),
-    };
+static const QList<QPoint> tilePositions = {
+    QPoint(0, 0),
+    QPoint(1, 0),
+    QPoint(0, 1),
+    QPoint(1, 1),
+    QPoint(2, 0),
+    QPoint(3, 0),
+    QPoint(2, 1),
+    QPoint(3, 1),
+    QPoint(4, 0),
+    QPoint(5, 0),
+    QPoint(4, 1),
+    QPoint(5, 1),
+};
 
+void MetatileLayersItem::draw() {
     const int numLayers = projectConfig.getNumLayersInMetatile();
     QPixmap pixmap(numLayers * 32, 32);
     QPainter painter(&pixmap);
@@ -30,7 +30,7 @@ void MetatileLayersItem::draw() {
         QImage tileImage = getPalettedTileImage(tile.tileId, this->primaryTileset, this->secondaryTileset, tile.palette, true)
                 .mirrored(tile.xflip, tile.yflip)
                 .scaled(16, 16);
-        painter.drawImage(tileCoords.at(i), tileImage);
+        painter.drawImage(tilePositions.at(i) * 16, tileImage);
     }
     if (this->showGrid) {
         // Draw grid
@@ -47,6 +47,7 @@ void MetatileLayersItem::draw() {
 void MetatileLayersItem::setMetatile(Metatile *metatile) {
     this->metatile = metatile;
     this->clearLastModifiedCoords();
+    this->clearLastHoveredCoords();
 }
 
 void MetatileLayersItem::setTilesets(Tileset *primaryTileset, Tileset *secondaryTileset) {
@@ -54,6 +55,7 @@ void MetatileLayersItem::setTilesets(Tileset *primaryTileset, Tileset *secondary
     this->secondaryTileset = secondaryTileset;
     this->draw();
     this->clearLastModifiedCoords();
+    this->clearLastHoveredCoords();
 }
 
 void MetatileLayersItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
@@ -64,11 +66,10 @@ void MetatileLayersItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
         emit this->selectedTilesChanged(selectionOrigin, dimensions.x(), dimensions.y());
         this->drawSelection();
     } else {
-        int x, y;
-        this->getBoundedCoords(event->pos(), &x, &y);
-        this->prevChangedTile.setX(x);
-        this->prevChangedTile.setY(y);
-        emit this->tileChanged(x, y);
+        const QPoint pos = this->getBoundedPos(event->pos());
+        this->prevChangedPos = pos;
+        this->clearLastHoveredCoords();
+        emit this->tileChanged(pos.x(), pos.y());
     }
 }
 
@@ -80,12 +81,11 @@ void MetatileLayersItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
         emit this->selectedTilesChanged(selectionOrigin, dimensions.x(), dimensions.y());
         this->drawSelection();
     } else {
-        int x, y;
-        this->getBoundedCoords(event->pos(), &x, &y);
-        if (prevChangedTile.x() != x || prevChangedTile.y() != y) {
-            this->prevChangedTile.setX(x);
-            this->prevChangedTile.setY(y);
-            emit this->tileChanged(x, y);
+       const QPoint pos = this->getBoundedPos(event->pos());
+        if (prevChangedPos != pos) {
+            this->prevChangedPos = pos;
+            this->clearLastHoveredCoords();
+            emit this->tileChanged(pos.x(), pos.y());
         }
     }
 }
@@ -101,17 +101,40 @@ void MetatileLayersItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
     this->draw();
 }
 
-void MetatileLayersItem::clearLastModifiedCoords() {
-    this->prevChangedTile.setX(-1);
-    this->prevChangedTile.setY(-1);
+void MetatileLayersItem::hoverMoveEvent(QGraphicsSceneHoverEvent * event) {
+    const QPoint pos = this->getBoundedPos(event->pos());
+    if (pos == this->prevHoveredPos)
+        return;
+    this->prevHoveredPos = pos;
+
+    int tileIndex = tilePositions.indexOf(pos);
+    if (tileIndex < 0 || tileIndex >= this->metatile->tiles.length())
+        return;
+
+    emit this->hoveredTileChanged(this->metatile->tiles.at(tileIndex).tileId);
 }
 
-void MetatileLayersItem::getBoundedCoords(QPointF pos, int *x, int *y) {
-    int maxX = (projectConfig.getNumLayersInMetatile() * 2) - 1;
-    *x = static_cast<int>(pos.x()) / 16;
-    *y = static_cast<int>(pos.y()) / 16;
-    if (*x < 0) *x = 0;
-    if (*y < 0) *y = 0;
-    if (*x > maxX) *x = maxX;
-    if (*y > 1) *y = 1;
+void MetatileLayersItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *) {
+    this->clearLastHoveredCoords();
+    emit this->hoveredTileCleared();
+}
+
+void MetatileLayersItem::clearLastModifiedCoords() {
+    this->prevChangedPos = QPoint(-1, -1);
+}
+
+void MetatileLayersItem::clearLastHoveredCoords() {
+    this->prevHoveredPos = QPoint(-1, -1);
+}
+
+QPoint MetatileLayersItem::getBoundedPos(const QPointF &pos) {
+    int x, y;
+    int maxX = (projectConfig.getNumLayersInMetatile() * 2) - 1;
+    x = static_cast<int>(pos.x()) / 16;
+    y = static_cast<int>(pos.y()) / 16;
+    if (x < 0) x = 0;
+    if (y < 0) y = 0;
+    if (x > maxX) x = maxX;
+    if (y > 1) y = 1;
+    return QPoint(x, y);
 }

src/ui/tileseteditor.cpp

@@ -206,6 +206,10 @@ void TilesetEditor::initMetatileLayersItem() {
             this, &TilesetEditor::onMetatileLayerTileChanged);
     connect(this->metatileLayersItem, &MetatileLayersItem::selectedTilesChanged,
             this, &TilesetEditor::onMetatileLayerSelectionChanged);
+    connect(this->metatileLayersItem, &MetatileLayersItem::hoveredTileChanged,
+            this, &TilesetEditor::onHoveredTileChanged);
+    connect(this->metatileLayersItem, &MetatileLayersItem::hoveredTileCleared,
+            this, &TilesetEditor::onHoveredTileCleared);
 
     bool showGrid = porymapConfig.getShowTilesetEditorLayerGrid();
     this->ui->actionLayer_Grid->setChecked(showGrid);
@@ -861,6 +865,7 @@ bool TilesetEditor::replaceMetatile(uint16_t metatileId, const Metatile * src, Q
     this->metatileSelector->draw();
     this->metatileLayersItem->draw();
     this->metatileLayersItem->clearLastModifiedCoords();
+    this->metatileLayersItem->clearLastHoveredCoords();
     return true;
 }