From 40fbbc5982fd72d2daa40bab9dd448b145e72cb6 Mon Sep 17 00:00:00 2001
From: Max-Wilhelm Bruker <max.bruker@tu-dortmund.de>
Date: Sun, 1 Apr 2012 14:01:20 +0200
Subject: [PATCH] added size contraints for zone view & scroll bars, fixing
 issue #34

---
 cockatrice/src/zoneviewwidget.cpp | 44 ++++++++++++++++++++++++++++---
 cockatrice/src/zoneviewwidget.h   |  4 +++
 cockatrice/src/zoneviewzone.cpp   |  8 ++++++
 cockatrice/src/zoneviewzone.h     |  3 +++
 4 files changed, 55 insertions(+), 4 deletions(-)

diff --git a/cockatrice/src/zoneviewwidget.cpp b/cockatrice/src/zoneviewwidget.cpp
index a9e62cfe..580624e7 100644
--- a/cockatrice/src/zoneviewwidget.cpp
+++ b/cockatrice/src/zoneviewwidget.cpp
@@ -6,6 +6,7 @@
 #include <QPushButton>
 #include <QPainter>
 #include <QPalette>
+#include <QScrollBar>
 #include "zoneviewwidget.h"
 #include "carditem.h"
 #include "zoneviewzone.h"
@@ -104,9 +105,26 @@ ZoneViewWidget::ZoneViewWidget(Player *_player, CardZone *_origZone, int numberC
 	
 	extraHeight = vbox->sizeHint(Qt::PreferredSize).height();
 	resize(150, 150);
-
-	zone = new ZoneViewZone(player, _origZone, numberCards, _revealZone, _writeableRevealZone, this);
-	vbox->addItem(zone);
+	
+	QGraphicsLinearLayout *zoneHBox = new QGraphicsLinearLayout(Qt::Horizontal);
+	
+	zoneContainer = new QGraphicsWidget(this);
+	zoneContainer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
+	zoneContainer->setFlag(QGraphicsItem::ItemClipsChildrenToShape);
+	zoneHBox->addItem(zoneContainer);
+	
+	scrollBar = new QScrollBar(Qt::Vertical);
+	scrollBar->setMinimum(0);
+	scrollBar->setSingleStep(50);
+	connect(scrollBar, SIGNAL(valueChanged(int)), this, SLOT(handleScrollBarChange(int)));
+	QGraphicsProxyWidget *scrollBarProxy = new QGraphicsProxyWidget;
+	scrollBarProxy->setWidget(scrollBar);
+	zoneHBox->addItem(scrollBarProxy);
+	
+	vbox->addItem(zoneHBox);
+	
+	zone = new ZoneViewZone(player, _origZone, numberCards, _revealZone, _writeableRevealZone, zoneContainer);
+	connect(zone, SIGNAL(wheelEventReceived(QGraphicsSceneWheelEvent *)), this, SLOT(handleWheelEvent(QGraphicsSceneWheelEvent *)));
 	
 	if (sortByNameCheckBox) {
 		connect(sortByNameCheckBox, SIGNAL(stateChanged(int)), zone, SLOT(setSortByName(int)));
@@ -148,13 +166,31 @@ void ZoneViewWidget::moveWidget(QPointF scenePos)
 void ZoneViewWidget::resizeToZoneContents()
 {
 	QRectF zoneRect = zone->getOptimumRect();
-	QSizeF newSize(qMax(QGraphicsWidget::layout()->effectiveSizeHint(Qt::MinimumSize, QSizeF()).width(), zoneRect.width() + 10), zoneRect.height() + extraHeight + 10);
+	qreal totalZoneHeight = zoneRect.height();
+	if (zoneRect.height() > 500)
+		zoneRect.setHeight(500);
+	QSizeF newSize(qMax(QGraphicsWidget::layout()->effectiveSizeHint(Qt::MinimumSize, QSizeF()).width(), zoneRect.width() + scrollBar->width() + 10), zoneRect.height() + extraHeight + 10);
 	setMaximumSize(newSize);
 	resize(newSize);
+	
+	zone->setGeometry(QRectF(0, -scrollBar->value(), zoneContainer->size().width(), totalZoneHeight));
+	scrollBar->setMaximum(totalZoneHeight - zoneRect.height());
+	
 	if (layout())
 		layout()->invalidate();
 }
 
+void ZoneViewWidget::handleWheelEvent(QGraphicsSceneWheelEvent *event)
+{
+	QWheelEvent wheelEvent(QPoint(), event->delta(), event->buttons(), event->modifiers(), event->orientation());
+	scrollBar->event(&wheelEvent);
+}
+
+void ZoneViewWidget::handleScrollBarChange(int value)
+{
+	zone->setY(-value);
+}
+
 void ZoneViewWidget::closeEvent(QCloseEvent *event)
 {
 	disconnect(zone, SIGNAL(beingDeleted()), this, 0);
diff --git a/cockatrice/src/zoneviewwidget.h b/cockatrice/src/zoneviewwidget.h
index 0b8eef7a..5148ba74 100644
--- a/cockatrice/src/zoneviewwidget.h
+++ b/cockatrice/src/zoneviewwidget.h
@@ -14,6 +14,7 @@ class QCheckBox;
 class GameScene;
 class ServerInfo_Card;
 class QGraphicsSceneMouseEvent;
+class QGraphicsSceneWheelEvent;
 
 class TitleLabel : public QGraphicsWidget {
 	Q_OBJECT
@@ -36,6 +37,7 @@ class ZoneViewWidget : public QGraphicsWidget {
 	Q_OBJECT
 private:
 	ZoneViewZone *zone;
+	QGraphicsWidget *zoneContainer;
 	
 	TitleLabel *titleLabel;
 	QPushButton *closeButton;
@@ -48,6 +50,8 @@ signals:
 	void closePressed(ZoneViewWidget *zv);
 private slots:
 	void resizeToZoneContents();
+	void handleWheelEvent(QGraphicsSceneWheelEvent *event);
+	void handleScrollBarChange(int value);
 	void zoneDeleted();
 	void moveWidget(QPointF scenePos);
 public:
diff --git a/cockatrice/src/zoneviewzone.cpp b/cockatrice/src/zoneviewzone.cpp
index 06863b26..cfa1dda2 100644
--- a/cockatrice/src/zoneviewzone.cpp
+++ b/cockatrice/src/zoneviewzone.cpp
@@ -1,5 +1,6 @@
 #include <math.h>
 #include <QDebug>
+#include <QGraphicsSceneWheelEvent>
 #include "zoneviewzone.h"
 #include "player.h"
 #include "carddragitem.h"
@@ -82,6 +83,8 @@ void ZoneViewZone::reorganizeCards()
 			cards[i]->setId(i);
 
 	int cols = floor(sqrt((double) cardCount / 2));
+	if (cols > 7)
+		cols = 7;
 	int rows = ceil((double) cardCount / cols);
 	if (rows < 1)
 		rows = 1;
@@ -180,3 +183,8 @@ void ZoneViewZone::setWriteableRevealZone(bool _writeableRevealZone)
 	writeableRevealZone = _writeableRevealZone;
 	
 }
+
+void ZoneViewZone::wheelEvent(QGraphicsSceneWheelEvent *event)
+{
+	emit wheelEventReceived(event);
+}
diff --git a/cockatrice/src/zoneviewzone.h b/cockatrice/src/zoneviewzone.h
index aab0d0f5..25850e38 100644
--- a/cockatrice/src/zoneviewzone.h
+++ b/cockatrice/src/zoneviewzone.h
@@ -7,6 +7,7 @@
 class ZoneViewWidget;
 class Response;
 class ServerInfo_Card;
+class QGraphicsSceneWheelEvent;
 
 class ZoneViewZone : public SelectZone, public QGraphicsLayoutItem {
 	Q_OBJECT
@@ -39,9 +40,11 @@ private slots:
 signals:
 	void beingDeleted();
 	void optimumRectChanged();
+	void wheelEventReceived(QGraphicsSceneWheelEvent *event);
 protected:
 	void addCardImpl(CardItem *card, int x, int y);
 	QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const;
+	void wheelEvent(QGraphicsSceneWheelEvent *event);
 };
 
 #endif