Add middle (and left+right) click zoom support to Image View

forge-gui/src/main/java/forge/gui/match/controllers/CPicture.java

@@ -17,7 +17,6 @@
  */
 package forge.gui.match.controllers;
 
-import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import java.awt.event.MouseWheelEvent;
 import java.awt.event.MouseWheelListener;
@@ -31,6 +30,7 @@ import forge.game.card.Card;
 import forge.gui.CardPicturePanel;
 import forge.gui.framework.ICDoc;
 import forge.gui.match.views.VPicture;
+import forge.gui.toolbox.FMouseAdapter;
 import forge.gui.toolbox.special.CardZoomer;
 import forge.item.IPaperCard;
 import forge.item.InventoryItem;
@@ -118,46 +118,23 @@ public enum CPicture implements ICDoc {
      * <li>Displays the alternate image for applicable cards on mouse click.
      */
     private void setMouseButtonListener() {
-        this.picturePanel.addMouseListener(new MouseAdapter() {
-            private final boolean[] buttonsDown = new boolean[4];
-
+        this.picturePanel.addMouseListener(new FMouseAdapter() {
             @Override
-            public void mousePressed(final MouseEvent e) {
-                if (isCardDisplayed()) {
-                    final int button = e.getButton();
-                    if (button < 1 || button > 3) {
-                        return;
-                    }
-                    this.buttonsDown[button] = true;
-                    if (this.buttonsDown[2] || (this.buttonsDown[1] && this.buttonsDown[3])) {
-                        zoomer.doMouseButtonZoom(currentCard, displayedState);
-                    }
-                }
-            }
-
-            @Override
-            public void mouseReleased(final MouseEvent e) {
-                if (isCardDisplayed()) {
-                    final int button = e.getButton();
-                    if (button < 1 || button > 3) {
-                        return;
-                    }
-                    if (!this.buttonsDown[button]) {
-                        return;
-                    }
-                    this.buttonsDown[button] = false;
-
-                    if (zoomer.isZoomerOpen()) {
-                        if (!this.buttonsDown[1] && !this.buttonsDown[2] && !this.buttonsDown[3]) {
-                            //don't stop zooming until all mouse buttons released
-                            zoomer.closeZoomer();
-                        }
-                        return; //don't handle click event below if zoom was open
-                    }
-
-                    if (button == 1) {
+            public void onLeftClick(MouseEvent e) {
                 flipCard();
             }
+
+            @Override
+            public void onMiddleMouseDown(MouseEvent e) {
+                if (isCardDisplayed()) {
+                    CardZoomer.SINGLETON_INSTANCE.doMouseButtonZoom(currentCard, displayedState);
+                }
+            }
+
+            @Override
+            public void onMiddleMouseUp(MouseEvent e) {
+                if (isCardDisplayed()) {
+                    CardZoomer.SINGLETON_INSTANCE.closeZoomer();
                 }
             }
         });
@@ -219,10 +196,10 @@ public enum CPicture implements ICDoc {
     }
 
     private boolean isCurrentCardFlippable() {
-        boolean isFlippableMorph =
-                currentCard.isFaceDown() && isAuthorizedToViewFaceDownCard(currentCard);
-        return (currentCard != null) &
-               (currentCard.isDoubleFaced() || currentCard.isFlipCard() || isFlippableMorph);
+        if (currentCard == null) { return false; }
+
+        return currentCard.isDoubleFaced() || currentCard.isFlipCard() ||
+                (currentCard.isFaceDown() && isAuthorizedToViewFaceDownCard(currentCard));
     }
 
     /**

forge-gui/src/main/java/forge/gui/toolbox/FMouseAdapter.java

@@ -52,12 +52,18 @@ public abstract class FMouseAdapter extends MouseAdapter {
     private boolean hovered;
     private Point mouseDownLoc;
     private Point firstClickLoc;
-    private int firstClickButton;
+    private int downButton, buttonsDown, firstClickButton;
     private Component tempMotionListenerComp;
 
     @Override
     public final void mousePressed(final MouseEvent e) {
-        switch (e.getButton()) {
+        final int button = e.getButton();
+        if (button < 1 || button > 3) {
+            return;
+        }
+        if (downButton == 0) {
+            downButton = button;
+            switch (button) {
             case 1:
                 onLeftMouseDown(e);
                 break;
@@ -68,6 +74,13 @@ public abstract class FMouseAdapter extends MouseAdapter {
                 onRightMouseDown(e);
                 break;
             }
+        }
+
+        buttonsDown += button;
+        if (buttonsDown == 4 && downButton != 2) {
+            downButton = 2;
+            onMiddleMouseDown(e); //treat left and right together as equivalent of middle
+        }
 
         mouseDownLoc = e.getLocationOnScreen();
 
@@ -90,7 +103,7 @@ public abstract class FMouseAdapter extends MouseAdapter {
         if (firstClickLoc != null) {
             //if first mouse down resulted in click and second mouse down with same button in close proximity,
             //handle double click event (don't wait until second mouse up to improve responsiveness)
-            if (e.getClickCount() % 2 == 0 && e.getButton() == firstClickButton &&
+            if (e.getClickCount() % 2 == 0 && downButton == firstClickButton &&
                     e.getLocationOnScreen().distance(firstClickLoc) <= 3) {
                 switch (firstClickButton) {
                 case 1:
@@ -117,7 +130,7 @@ public abstract class FMouseAdapter extends MouseAdapter {
             resetMouseDownLoc();
         }
         if (tempMotionListenerComp == null) { //don't raise drag event if only a temporary motion listener
-            switch (e.getButton()) {
+            switch (downButton) {
             case 1:
                 onLeftMouseDragging(e);
                 break;
@@ -153,7 +166,17 @@ public abstract class FMouseAdapter extends MouseAdapter {
 
     @Override
     public final void mouseReleased(MouseEvent e) {
-        switch (e.getButton()) {
+        int button = e.getButton();
+        if (button < 1 || button > 3 || downButton == 0) {
+            return;
+        }
+        buttonsDown -= button;
+        if (buttonsDown > 0) { return; } //don't handle mouse up until all mouse buttons up
+
+        button = downButton;
+        downButton = 0;
+
+        switch (button) {
         case 1:
             onLeftMouseUp(e);
             break;
@@ -173,13 +196,13 @@ public abstract class FMouseAdapter extends MouseAdapter {
         if (mouseDownLoc != null) {
             //if first click, cache button and mouse down location for determination of double click later
             if (e.getClickCount() % 2 == 1) {
-                firstClickButton = e.getButton();
+                firstClickButton = button;
                 firstClickLoc = mouseDownLoc;
             }
 
             resetMouseDownLoc();
 
-            switch (e.getButton()) {
+            switch (button) {
             case 1:
                 onLeftClick(e);
                 break;
@@ -192,7 +215,7 @@ public abstract class FMouseAdapter extends MouseAdapter {
             }
         }
         else if (isCompDraggable) { //handle drag drop if click not handled and component is draggable
-            switch (e.getButton()) {
+            switch (button) {
             case 1:
                 onLeftMouseDragDrop(e);
                 break;

forge-gui/src/main/java/forge/gui/toolbox/itemmanager/views/ImageView.java

@@ -25,6 +25,7 @@ import javax.swing.JViewport;
 import javax.swing.ScrollPaneConstants;
 
 import forge.ImageCache;
+import forge.game.card.Card;
 import forge.gui.deckeditor.DeckProxy;
 import forge.gui.framework.ILocalRepaint;
 import forge.gui.match.controllers.CDetail;
@@ -37,6 +38,8 @@ import forge.gui.toolbox.FSkin.SkinFont;
 import forge.gui.toolbox.FSkin.SkinImage;
 import forge.gui.toolbox.itemmanager.ItemManager;
 import forge.gui.toolbox.itemmanager.ItemManagerModel;
+import forge.gui.toolbox.special.CardZoomer;
+import forge.item.IPaperCard;
 import forge.item.InventoryItem;
 import forge.view.arcane.CardPanel;
 
@@ -88,11 +91,26 @@ public class ImageView<T extends InventoryItem> extends ItemView<T> {
 
             @Override
             public void onLeftDoubleClick(MouseEvent e) {
-                if (hoveredItem != null && hoveredItem.selected) {
+                ItemInfo item = getItemAtPoint(e.getPoint());
+                if (item != null && item.selected) {
                     itemManager.activateSelectedItems();
                 }
             }
 
+            @Override
+            public void onMiddleMouseDown(MouseEvent e) {
+                ItemInfo item = getItemAtPoint(e.getPoint());
+                if (item != null && item.item instanceof IPaperCard) {
+                    Card card = Card.getCardForUi((IPaperCard) item.item);
+                    CardZoomer.SINGLETON_INSTANCE.doMouseButtonZoom(card);
+                }
+            }
+
+            @Override
+            public void onMiddleMouseUp(MouseEvent e) {
+                CardZoomer.SINGLETON_INSTANCE.closeZoomer();
+            }
+
             @Override
             public void onRightClick(MouseEvent e) {
                 selectItem(e);