Changed: #1301 Experiments with undo\redo and QGraphicsScene.

--HG--
branch : gsoc2011-worldeditorqt

code/nel/tools/3d/object_viewer_qt/src/plugins/landscape_editor/builder_zone.h

@@ -36,6 +36,35 @@
 namespace LandscapeEditor
 {
 
+// Data
+struct LigoData
+{
+	uint32			PosX;
+	uint32			PosY;
+	qreal			Scale;
+	uint8			Rot;
+	uint8			Flip;
+	std::string		ZoneName;
+	std::string		SharingMatNames[4];
+	uint8			SharingCutEdges[4];
+	bool operator!= (const LigoData& other) const
+	{
+		return (PosX != other.PosX) ||
+			   (PosY != other.PosY) ||
+			   (Rot != other.Rot) ||
+			   (Flip != other.Flip) ||
+			   (ZoneName != other.ZoneName) ||
+			   (SharingMatNames[0] != other.SharingMatNames[0]) ||
+			   (SharingMatNames[1] != other.SharingMatNames[1]) ||
+			   (SharingMatNames[2] != other.SharingMatNames[2]) ||
+			   (SharingMatNames[3] != other.SharingMatNames[3]) ||
+			   (SharingCutEdges[0] != other.SharingCutEdges[0]) ||
+			   (SharingCutEdges[1] != other.SharingCutEdges[1]) ||
+			   (SharingCutEdges[2] != other.SharingCutEdges[2]) ||
+			   (SharingCutEdges[3] != other.SharingCutEdges[3]);
+	}
+};
+
 /**
 @class PixmapDatabase
 @brief PixmapDatabase contains the image database

code/nel/tools/3d/object_viewer_qt/src/plugins/landscape_editor/landscape_actions.cpp

@@ -17,6 +17,7 @@
 
 // Project includes
 #include "landscape_actions.h"
+#include "builder_zone.h"
 
 // NeL includes
 #include <nel/misc/debug.h>
@@ -25,4 +26,34 @@
 
 namespace LandscapeEditor
 {
+
+ActionLigoTile::ActionLigoTile(const LigoData &data, ZoneBuilder *zoneBuilder, QGraphicsScene *scene, QUndoCommand *parent)
+	: QUndoCommand(parent),
+	  m_item(0),
+	  m_zoneBuilder(zoneBuilder),
+	  m_scene(scene)
+{
+	m_ligoData = data;
+}
+
+ActionLigoTile::~ActionLigoTile()
+{
+}
+
+void ActionLigoTile::undo()
+{
+	m_scene->removeItem(m_item);
+	delete m_item;
+	m_item = 0;
+}
+
+void ActionLigoTile::redo()
+{
+	QPixmap *pixmap = m_zoneBuilder->pixmapDatabase()->pixmap(QString(m_ligoData.ZoneName.c_str()));
+	m_item = new QGraphicsPixmapItem(*pixmap, 0, m_scene);
+	m_item->setPos(m_ligoData.PosX, m_ligoData.PosY);
+	m_item->setScale(m_ligoData.Scale);
+	setText(QObject::tr("Add tile(%1, %2)").arg(m_ligoData.PosX).arg(m_ligoData.PosY));
+}
+
 } /* namespace LandscapeEditor */

code/nel/tools/3d/object_viewer_qt/src/plugins/landscape_editor/landscape_actions.h

@@ -19,13 +19,35 @@
 #define LANDSCAPE_ACTIONS_H
 
 // Project includes
+#include "builder_zone.h"
 
 // NeL includes
 
 // Qt includes
+#include <QtGui/QUndoCommand>
+#include <QtGui/QGraphicsScene>
+#include <QtGui/QGraphicsPixmapItem>
 
 namespace LandscapeEditor
 {
+class ZoneBuilder;
+
+class ActionLigoTile : public QUndoCommand
+{
+public:
+	ActionLigoTile(const LigoData &data, ZoneBuilder *zoneBuilder, QGraphicsScene *scene, QUndoCommand *parent = 0);
+	~ActionLigoTile();
+
+	virtual void undo();
+	virtual void redo();
+
+private:
+
+	LigoData m_ligoData;
+	QGraphicsPixmapItem *m_item;
+	ZoneBuilder *m_zoneBuilder;
+	QGraphicsScene *m_scene;
+};
 
 } /* namespace LandscapeEditor */
 

code/nel/tools/3d/object_viewer_qt/src/plugins/landscape_editor/landscape_editor_window.cpp

@@ -33,7 +33,6 @@
 #include <QtCore/QSettings>
 #include <QtGui/QFileDialog>
 #include <QtOpenGL/QGLWidget>
-#include <QtGui/QGraphicsPixmapItem>
 
 namespace LandscapeEditor
 {
@@ -50,10 +49,9 @@ LandscapeEditorWindow::LandscapeEditorWindow(QWidget *parent)
 	m_ui.zoneListWidget->setZoneBuilder(m_zoneBuilder);
 	m_ui.zoneListWidget->updateUi();
 
-	m_landscapeScene = new LandscapeScene(this);
+	m_landscapeScene = new LandscapeScene(m_undoStack, m_ui.zoneListWidget, m_zoneBuilder, this);
 	m_ui.graphicsView->setScene(m_landscapeScene);
-	m_ui.graphicsView->setViewport(new QGLWidget(QGLFormat(QGL::DoubleBuffer | QGL::SampleBuffers)));
-
+	//m_ui.graphicsView->setViewport(new QGLWidget(QGLFormat(QGL::DoubleBuffer | QGL::SampleBuffers)));
 
 	createMenus();
 	createToolBars();

code/nel/tools/3d/object_viewer_qt/src/plugins/landscape_editor/landscape_editor_window.ui

@@ -27,6 +27,14 @@
     </property>
     <item row="0" column="0">
      <widget class="LandscapeEditor::LandscapeView" name="graphicsView">
+      <property name="sceneRect">
+       <rectf>
+        <x>0.000000000000000</x>
+        <y>0.000000000000000</y>
+        <width>99999.000000000000000</width>
+        <height>99999.000000000000000</height>
+       </rectf>
+      </property>
       <property name="dragMode">
        <enum>QGraphicsView::NoDrag</enum>
       </property>

code/nel/tools/3d/object_viewer_qt/src/plugins/landscape_editor/landscape_scene.cpp

@@ -17,22 +17,68 @@
 
 // Project includes
 #include "landscape_scene.h"
+#include "builder_zone.h"
+#include "landscape_actions.h"
+#include "list_zones_widget.h"
 
 // NeL includes
 #include <nel/misc/debug.h>
 
 // Qt includes
+#include <QtGui/QPainter>
+#include <QtGui/QGraphicsPixmapItem>
 
 namespace LandscapeEditor
 {
 
-LandscapeScene::LandscapeScene(QObject *parent)
-	: QGraphicsScene(parent)
+LandscapeScene::LandscapeScene(QUndoStack *undoStack, ListZonesWidget *listZonesWidget, ZoneBuilder *zoneBuilder, QObject *parent)
+	: QGraphicsScene(parent),
+	  m_undoStack(undoStack),
+	  m_listZonesWidget(listZonesWidget),
+	  m_zoneBuilder(zoneBuilder)
 {
+	m_cellSize = 160;
+	createBackgroundPixmap();
 }
 
 LandscapeScene::~LandscapeScene()
 {
 }
 
+void LandscapeScene::mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent)
+{
+	if (mouseEvent->button() != Qt::LeftButton)
+		return;
+
+	qreal x = mouseEvent->scenePos().rx();
+	qreal y = mouseEvent->scenePos().ry();
+	if ((x < 0) || (y < 0))
+		return;
+
+	LigoData ligoData = m_listZonesWidget->currentLigoData();
+	if (ligoData.ZoneName == "")
+		return;
+
+	ligoData.PosX = m_cellSize * int(x / m_cellSize);;
+	ligoData.PosY = m_cellSize * int(y / m_cellSize);
+	ligoData.Scale = m_cellSize / 256.0;
+
+	ActionLigoTile *action = new ActionLigoTile(ligoData, m_zoneBuilder, this);
+	m_undoStack->push(action);
+
+	QGraphicsScene::mousePressEvent(mouseEvent);
+}
+
+void LandscapeScene::createBackgroundPixmap()
+{
+	QPixmap pixmap(QSize(m_cellSize, m_cellSize));
+	QPainter painter(&pixmap);
+	//painter.setRenderHint(QPainter::Antialiasing, true);
+	painter.setBrush(QBrush(Qt::lightGray));
+	painter.setPen(QPen(Qt::black, 3, Qt::DotLine));
+	painter.drawRect(0, 0, pixmap.width(), pixmap.height());
+
+	setBackgroundBrush(pixmap);
+}
+
 } /* namespace LandscapeEditor */

code/nel/tools/3d/object_viewer_qt/src/plugins/landscape_editor/landscape_scene.h

@@ -23,18 +23,33 @@
 // NeL includes
 
 // Qt includes
-#include <QGraphicsScene>
+#include <QtGui/QGraphicsScene>
+#include <QtGui/QGraphicsSceneMouseEvent>
+#include <QtGui/QUndoStack>
 
 namespace LandscapeEditor
 {
+class ZoneBuilder;
+class ListZonesWidget;
 
 class LandscapeScene : public QGraphicsScene
 {
 	Q_OBJECT
 
 public:
-	LandscapeScene(QObject *parent = 0);
+	LandscapeScene(QUndoStack *undoStack, ListZonesWidget *listZonesWidget, ZoneBuilder *zoneBuilder, QObject *parent = 0);
 	virtual ~LandscapeScene();
+
+protected:
+	void mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent);
+
+private:
+	void createBackgroundPixmap();
+
+	int m_cellSize;
+	ListZonesWidget *m_listZonesWidget;
+	QUndoStack *m_undoStack;
+	ZoneBuilder *m_zoneBuilder;
 };
 
 } /* namespace LandscapeEditor */

code/nel/tools/3d/object_viewer_qt/src/plugins/landscape_editor/landscape_view.cpp

@@ -26,27 +26,52 @@
 #include <nel/misc/debug.h>
 
 // Qt includes
-
+#include <QApplication>
 
 namespace LandscapeEditor
 {
 
 LandscapeView::LandscapeView(QWidget *parent)
-	: QGraphicsView(parent)
+	: QGraphicsView(parent),
+	  m_moveMouse(false)
 {
-    setDragMode(ScrollHandDrag);
+	setDragMode(ScrollHandDrag);
+	setTransformationAnchor(AnchorUnderMouse);
 }
 
 LandscapeView::~LandscapeView()
 {
 }
 
-void LandscapeView::wheelEvent(QWheelEvent *event)
-{
-    double numDegrees = event->delta() / 8.0;
-    double numSteps = numDegrees / 15.0;
-    double factor = std::pow(1.125, numSteps);
-    scale(factor, factor);
+void LandscapeView::wheelEvent(QWheelEvent *event)
+{
+	double numDegrees = event->delta() / 8.0;
+	double numSteps = numDegrees / 15.0;
+	double factor = std::pow(1.125, numSteps);
+	scale(factor, factor);
+}
+
+void LandscapeView::mousePressEvent(QMouseEvent *event)
+{
+	QGraphicsView::mousePressEvent(event);
+	if (event->button() != Qt::MiddleButton)
+		return;
+	m_moveMouse = true;
+	QApplication::setOverrideCursor(Qt::ClosedHandCursor);
+}
+
+void LandscapeView::mouseMoveEvent(QMouseEvent *event)
+{
+	if (m_moveMouse)
+		translate(0.001, 0.001);
+	QGraphicsView::mouseMoveEvent(event);
+}
+
+void LandscapeView::mouseReleaseEvent(QMouseEvent *event)
+{
+	QApplication::restoreOverrideCursor();
+	m_moveMouse = false;
+	QGraphicsView::mouseReleaseEvent(event);
 }
 
 } /* namespace LandscapeEditor */

code/nel/tools/3d/object_viewer_qt/src/plugins/landscape_editor/landscape_view.h

@@ -36,12 +36,16 @@ public:
 	~LandscapeView();
 
 protected:
-    void wheelEvent(QWheelEvent *event); 
+	virtual void wheelEvent(QWheelEvent *event);
+	virtual void mousePressEvent(QMouseEvent *event);
+	virtual void mouseMoveEvent(QMouseEvent *event);
+	virtual void mouseReleaseEvent(QMouseEvent *event);
 
 private Q_SLOTS:
 
 private:
 
+	bool m_moveMouse;
 }; /* class LandscapeView */
 
 } /* namespace LandscapeEditor */

code/nel/tools/3d/object_viewer_qt/src/plugins/landscape_editor/list_zones_widget.cpp

@@ -17,7 +17,6 @@
 
 // Project includes
 #include "list_zones_widget.h"
-#include "builder_zone.h"
 #include "list_zones_model.h"
 
 // NeL includes
@@ -31,6 +30,7 @@
 
 // Qt includes
 #include <QtGui/QIcon>
+#include <QtCore/QModelIndex>
 
 namespace LandscapeEditor
 {
@@ -100,6 +100,16 @@ void ListZonesWidget::updateUi()
 	m_listZonesModel->rebuildModel(m_zoneBuilder->pixmapDatabase());
 }
 
+LigoData ListZonesWidget::currentLigoData() const
+{
+	LigoData ligoData;
+	ligoData.ZoneName = "";
+	QModelIndex index = m_ui.listView->currentIndex();
+	if (index.isValid())
+		ligoData.ZoneName = index.data().toString().toStdString();
+	return ligoData;
+}
+
 void ListZonesWidget::setZoneBuilder(ZoneBuilder *zoneBuilder)
 {
 	m_zoneBuilder = zoneBuilder;

code/nel/tools/3d/object_viewer_qt/src/plugins/landscape_editor/list_zones_widget.h

@@ -20,6 +20,7 @@
 
 // Project includes
 #include "ui_list_zones_widget.h"
+#include "builder_zone.h"
 
 // NeL includes
 
@@ -27,7 +28,6 @@
 
 namespace LandscapeEditor
 {
-class ZoneBuilder;
 class ListZonesModel;
 
 /**
@@ -45,6 +45,7 @@ public:
 
 	void updateUi();
 	void setZoneBuilder(ZoneBuilder *zoneBuilder);
+	LigoData currentLigoData() const;
 
 Q_SIGNALS:
 private Q_SLOTS: