# HG changeset patch
# User Teemu Piippo <teemu@hecknology.net>
# Date 1486638331 -7200
# Node ID edddb9b0db9e5a03a11f8ac4285ead44f90c2c74
# Parent  ac7db4c076c327b63325db1d6d30cace09e21d0a
Moved document editing methods from GLRenderer to Canvas

diff -r ac7db4c076c3 -r edddb9b0db9e src/canvas.cpp
--- a/src/canvas.cpp	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/canvas.cpp	Thu Feb 09 13:05:31 2017 +0200
@@ -16,11 +16,156 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <QMouseEvent>
 #include "canvas.h"
+#include "documentmanager.h"
 #include "ldDocument.h"
+#include "mainwindow.h"
+#include "messageLog.h"
+#include "primitives.h"
 
 Canvas::Canvas(LDDocument* document, QWidget* parent) :
-    GLRenderer {document, parent}
+    GLRenderer {document, parent},
+    m_document {*document},
+    m_currentEditMode {AbstractEditMode::createByType (this, EditModeType::Select)} {}
+
+Canvas::~Canvas()
+{
+	delete m_currentEditMode;
+}
+
+void Canvas::overpaint(QPainter& painter)
+{
+	GLRenderer::overpaint(painter);
+	QFontMetrics metrics {QFont {}};
+
+#ifndef RELEASE
+	{
+		QString text = format("Rotation: %1\nPanning: (%2, %3), Zoom: %4", rotationMatrix(), panning(X), panning(Y), zoom());
+		QRect textSize = metrics.boundingRect(0, 0, width(), height(), Qt::AlignCenter, text);
+		painter.setPen(textPen());
+		painter.drawText((width() - textSize.width()) / 2, height() - textSize.height(), textSize.width(),
+		    textSize.height(), Qt::AlignCenter, text);
+	}
+#endif
+
+	if (camera() != FreeCamera)
+	{
+		// Paint the coordinates onto the screen.
+		QString text = format(tr("X: %1, Y: %2, Z: %3"), m_position3D[X], m_position3D[Y], m_position3D[Z]);
+		QFontMetrics metrics {font()};
+		QRect textSize = metrics.boundingRect (0, 0, width(), height(), Qt::AlignCenter, text);
+		painter.setPen(textPen());
+		painter.drawText(width() - textSize.width(), height() - 16, textSize.width(), textSize.height(), Qt::AlignCenter, text);
+	}
+
+	// Draw edit mode HUD
+	m_currentEditMode->render(painter);
+
+	// Message log
+	if (m_window->messageLog())
+	{
+		int y = 0;
+		int margin = 2;
+		QColor penColor = textPen().color();
+
+		for (const MessageManager::Line& line : m_window->messageLog()->getLines())
+		{
+			penColor.setAlphaF(line.alpha);
+			painter.setPen(penColor);
+			painter.drawText(QPoint {margin, y + margin + metrics.ascent()}, line.text);
+			y += metrics.height();
+		}
+	}
+}
+
+bool Canvas::freeCameraAllowed() const
+{
+	return m_currentEditMode->allowFreeCamera();
+}
+
+void Canvas::setEditMode(EditModeType a)
 {
+	if (m_currentEditMode and m_currentEditMode->type() == a)
+		return;
 
+	delete m_currentEditMode;
+	m_currentEditMode = AbstractEditMode::createByType(this, a);
+
+	// If we cannot use the free camera, use the top one instead.
+	if (camera() == FreeCamera and not m_currentEditMode->allowFreeCamera())
+		setCamera(TopCamera);
+
+	m_window->updateEditModeActions();
+	update();
 }
+
+EditModeType Canvas::currentEditModeType() const
+{
+	return m_currentEditMode->type();
+}
+
+LDDocument* Canvas::document() const
+{
+	return &m_document;
+}
+
+void Canvas::mouseDoubleClickEvent(QMouseEvent* event)
+{
+	if (m_currentEditMode->mouseDoubleClicked (event))
+		event->accept();
+}
+
+void Canvas::dropEvent(QDropEvent* event)
+{
+	if (m_window and event->source() == m_window->getPrimitivesTree())
+	{
+		PrimitiveTreeItem* item = static_cast<PrimitiveTreeItem*> (m_window->getPrimitivesTree()->currentItem());
+		QString primitiveName = item->primitive()->name;
+		LDSubfileReference* reference = currentDocument()->emplaceAt<LDSubfileReference>(m_window->suggestInsertPoint());
+		reference->setFileInfo (m_documents->getDocumentByName(primitiveName));
+		currentDocument()->addToSelection(reference);
+		m_window->buildObjectList();
+		refresh();
+		event->acceptProposedAction();
+	}
+}
+
+void Canvas::keyReleaseEvent(QKeyEvent* event)
+{
+	m_currentEditMode->keyReleased(event);
+	GLRenderer::keyReleaseEvent(event);
+}
+
+void Canvas::mouseMoveEvent(QMouseEvent* event)
+{
+	// Calculate 3d position of the cursor
+	m_position3D = convert2dTo3d(mousePosition(), true);
+
+	if (not m_currentEditMode->mouseMoved(event))
+		GLRenderer::mouseMoveEvent(event);
+}
+
+void Canvas::mouseReleaseEvent(QMouseEvent *event)
+{
+	AbstractEditMode::MouseEventData data;
+	data.ev = event;
+	data.mouseMoved = mouseHasMoved();
+	data.keymods = keyboardModifiers();
+	data.releasedButtons = lastButtons() & ~event->buttons();
+	m_currentEditMode->mouseReleased(data);
+	GLRenderer::mouseReleaseEvent(event);
+}
+
+void Canvas::mousePressEvent(QMouseEvent *event)
+{
+	if (m_currentEditMode->mousePressed(event))
+		event->accept();
+
+	GLRenderer::mousePressEvent(event);
+}
+
+const Vertex& Canvas::position3D() const
+{
+	return m_position3D;
+}
diff -r ac7db4c076c3 -r edddb9b0db9e src/canvas.h
--- a/src/canvas.h	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/canvas.h	Thu Feb 09 13:05:31 2017 +0200
@@ -18,9 +18,31 @@
 
 #pragma once
 #include "glRenderer.h"
+#include "editmodes/abstractEditMode.h"
 
 class Canvas : public GLRenderer
 {
 public:
 	Canvas(LDDocument* document, QWidget* parent = nullptr);
+	~Canvas();
+
+	EditModeType currentEditModeType() const;
+	LDDocument* document() const;
+	const Vertex& position3D() const;
+	void setEditMode(EditModeType type);
+
+protected:
+	void dropEvent(QDropEvent* event) override;
+	bool freeCameraAllowed() const override;
+	void keyReleaseEvent(QKeyEvent* event) override;
+	void mouseDoubleClickEvent(QMouseEvent* event) override;
+	void mouseMoveEvent(QMouseEvent* event) override;
+	void mousePressEvent(QMouseEvent *event) override;
+	void mouseReleaseEvent(QMouseEvent* event) override;
+	void overpaint(QPainter& painter) override;
+
+private:
+	LDDocument& m_document;
+	AbstractEditMode* m_currentEditMode = nullptr;
+	Vertex m_position3D;
 };
diff -r ac7db4c076c3 -r edddb9b0db9e src/editmodes/abstractEditMode.cpp
--- a/src/editmodes/abstractEditMode.cpp	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/editmodes/abstractEditMode.cpp	Thu Feb 09 13:05:31 2017 +0200
@@ -28,7 +28,7 @@
 #include "curvemode.h"
 #include "../mainwindow.h"
 #include "../ldDocument.h"
-#include "../glRenderer.h"
+#include "../canvas.h"
 #include "../miscallenous.h"
 #include "../grid.h"
 
@@ -38,25 +38,25 @@
 /*
  * Base class constructor of the abstract editing mode.
  */
-AbstractEditMode::AbstractEditMode(GLRenderer* renderer) :
-	QObject(renderer),
-	HierarchyElement(renderer),
-	m_renderer(renderer) {}
+AbstractEditMode::AbstractEditMode(Canvas* canvas) :
+    QObject(canvas),
+    HierarchyElement(canvas),
+    m_canvas(canvas) {}
 
 /*
  * Constructs an edit mode by type.
  */
-AbstractEditMode* AbstractEditMode::createByType(GLRenderer* renderer, EditModeType type)
+AbstractEditMode* AbstractEditMode::createByType(Canvas* canvas, EditModeType type)
 {
 	switch (type)
 	{
-	case EditModeType::Select: return new SelectMode (renderer);
-	case EditModeType::Draw: return new DrawMode (renderer);
-	case EditModeType::Rectangle: return new RectangleMode (renderer);
-	case EditModeType::Circle: return new CircleMode (renderer);
-	case EditModeType::MagicWand: return new MagicWandMode (renderer);
-	case EditModeType::LinePath: return new LinePathMode (renderer);
-	case EditModeType::Curve: return new CurveMode (renderer);
+	case EditModeType::Select: return new SelectMode (canvas);
+	case EditModeType::Draw: return new DrawMode (canvas);
+	case EditModeType::Rectangle: return new RectangleMode (canvas);
+	case EditModeType::Circle: return new CircleMode (canvas);
+	case EditModeType::MagicWand: return new MagicWandMode (canvas);
+	case EditModeType::LinePath: return new LinePathMode (canvas);
+	case EditModeType::Curve: return new CurveMode (canvas);
 	}
 
 	throw std::logic_error("bad type given to AbstractEditMode::createByType");
@@ -65,20 +65,20 @@
 /*
  * Returns the edit mode's corresponding renderer pointer.
  */
-GLRenderer* AbstractEditMode::renderer() const
+Canvas* AbstractEditMode::renderer() const
 {
-	return m_renderer;
+	return m_canvas;
 }
 
 /*
  * Base class constructor of the abstract drwaing mode.
  */
-AbstractDrawMode::AbstractDrawMode(GLRenderer* renderer) :
-    AbstractEditMode {renderer},
+AbstractDrawMode::AbstractDrawMode(Canvas* canvas) :
+    AbstractEditMode {canvas},
     m_polybrush {QBrush {QColor {64, 192, 0, 128}}}
 {
-	renderer->setContextMenuPolicy(Qt::NoContextMenu); // We need the right mouse button for removing vertices
-	renderer->setCursor(Qt::CrossCursor);
+	canvas->setContextMenuPolicy(Qt::NoContextMenu); // We need the right mouse button for removing vertices
+	canvas->setCursor(Qt::CrossCursor);
 	m_window->currentDocument()->clearSelection();
 	m_window->updateSelection();
 	m_drawedVerts.clear();
@@ -87,11 +87,11 @@
 /*
  * Base class constructor of the abstract selection mode.
  */
-AbstractSelectMode::AbstractSelectMode(GLRenderer* renderer) :
-    AbstractEditMode {renderer}
+AbstractSelectMode::AbstractSelectMode(Canvas* canvas) :
+    AbstractEditMode {canvas}
 {
-	renderer->unsetCursor();
-	renderer->setContextMenuPolicy (Qt::DefaultContextMenu);
+	canvas->unsetCursor();
+	canvas->setContextMenuPolicy (Qt::DefaultContextMenu);
 }
 
 /*
diff -r ac7db4c076c3 -r edddb9b0db9e src/editmodes/abstractEditMode.h
--- a/src/editmodes/abstractEditMode.h	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/editmodes/abstractEditMode.h	Thu Feb 09 13:05:31 2017 +0200
@@ -21,7 +21,7 @@
 #include "../model.h"
 
 class QPainter;
-class GLRenderer;
+class Canvas;
 class QMouseEvent;
 class QKeyEvent;
 
@@ -52,11 +52,11 @@
 		Qt::MouseButtons releasedButtons;
 	};
 
-	AbstractEditMode (GLRenderer* renderer);
+	AbstractEditMode(Canvas* canvas);
 
 	virtual bool			allowFreeCamera() const = 0;
 	virtual void			render (QPainter&) const {}
-	GLRenderer*				renderer() const;
+	Canvas* renderer() const;
 	virtual EditModeType	type() const = 0;
 	virtual bool			mousePressed (QMouseEvent*) { return false; }
 	virtual bool			mouseReleased (MouseEventData const&) { return false; }
@@ -64,10 +64,10 @@
 	virtual bool			mouseMoved (QMouseEvent*) { return false; }
 	virtual bool			keyReleased (QKeyEvent*) { return false; }
 
-	static AbstractEditMode* createByType (GLRenderer* renderer, EditModeType type);
+	static AbstractEditMode* createByType (Canvas* renderer, EditModeType type);
 
 private:
-	GLRenderer* m_renderer;
+	Canvas* m_canvas;
 };
 
 /*
@@ -82,7 +82,7 @@
 	QBrush					m_polybrush;
 
 public:
-	AbstractDrawMode (GLRenderer* renderer);
+	AbstractDrawMode (Canvas* canvas);
 
 	void addDrawnVertex(const Vertex& pos);
 	bool allowFreeCamera() const override final;
@@ -105,7 +105,7 @@
 	DEFINE_CLASS (AbstractSelectMode, AbstractEditMode)
 
 public:
-	AbstractSelectMode (GLRenderer* renderer);
+	AbstractSelectMode (Canvas* canvas);
 
 	virtual bool allowFreeCamera() const override
 	{
diff -r ac7db4c076c3 -r edddb9b0db9e src/editmodes/circleMode.cpp
--- a/src/editmodes/circleMode.cpp	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/editmodes/circleMode.cpp	Thu Feb 09 13:05:31 2017 +0200
@@ -23,14 +23,14 @@
 #include "../ldDocument.h"
 #include "../ringFinder.h"
 #include "../primitives.h"
-#include "../glRenderer.h"
+#include "../canvas.h"
 #include "../mainwindow.h"
 #include "../mathfunctions.h"
 #include "../miscallenous.h"
 #include "../grid.h"
 
-CircleMode::CircleMode(GLRenderer* renderer) :
-	Super {renderer} {}
+CircleMode::CircleMode(Canvas* canvas) :
+    Super {canvas} {}
 
 
 EditModeType CircleMode::type() const
diff -r ac7db4c076c3 -r edddb9b0db9e src/editmodes/circleMode.h
--- a/src/editmodes/circleMode.h	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/editmodes/circleMode.h	Thu Feb 09 13:05:31 2017 +0200
@@ -24,7 +24,7 @@
 	DEFINE_CLASS (CircleMode, AbstractDrawMode)
 
 public:
-	CircleMode (GLRenderer* renderer);
+	CircleMode (Canvas* canvas);
 
 	void endDraw() override;
 	double getCircleDrawDist (int position) const;
diff -r ac7db4c076c3 -r edddb9b0db9e src/editmodes/curvemode.cpp
--- a/src/editmodes/curvemode.cpp	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/editmodes/curvemode.cpp	Thu Feb 09 13:05:31 2017 +0200
@@ -18,10 +18,10 @@
 
 #include "curvemode.h"
 #include "../ldObject.h"
-#include "../glRenderer.h"
+#include "../canvas.h"
 
-CurveMode::CurveMode (GLRenderer* renderer) :
-	Super (renderer) {}
+CurveMode::CurveMode (Canvas* canvas) :
+    Super (canvas) {}
 
 void CurveMode::render (QPainter& painter) const
 {
diff -r ac7db4c076c3 -r edddb9b0db9e src/editmodes/curvemode.h
--- a/src/editmodes/curvemode.h	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/editmodes/curvemode.h	Thu Feb 09 13:05:31 2017 +0200
@@ -24,7 +24,7 @@
 	DEFINE_CLASS (CurveMode, AbstractDrawMode)
 
 public:
-	CurveMode (GLRenderer* renderer);
+	CurveMode (Canvas* canvas);
 	void endDraw() override;
 	void render (QPainter& painter) const override;
 	EditModeType type() const override;
diff -r ac7db4c076c3 -r edddb9b0db9e src/editmodes/drawMode.cpp
--- a/src/editmodes/drawMode.cpp	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/editmodes/drawMode.cpp	Thu Feb 09 13:05:31 2017 +0200
@@ -22,8 +22,8 @@
 #include "../ldObject.h"
 #include "../glRenderer.h"
 
-DrawMode::DrawMode (GLRenderer* renderer) :
-	Super (renderer) {}
+DrawMode::DrawMode (Canvas* canvas) :
+    Super (canvas) {}
 
 EditModeType DrawMode::type() const
 {
diff -r ac7db4c076c3 -r edddb9b0db9e src/editmodes/drawMode.h
--- a/src/editmodes/drawMode.h	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/editmodes/drawMode.h	Thu Feb 09 13:05:31 2017 +0200
@@ -25,7 +25,7 @@
 	bool m_rectdraw;
 
 public:
-	DrawMode (GLRenderer* renderer);
+	DrawMode (Canvas* canvas);
 
 	void render (QPainter& painter) const override;
 	int maxVertices() const override { return 4; }
diff -r ac7db4c076c3 -r edddb9b0db9e src/editmodes/linePathMode.cpp
--- a/src/editmodes/linePathMode.cpp	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/editmodes/linePathMode.cpp	Thu Feb 09 13:05:31 2017 +0200
@@ -18,11 +18,11 @@
 
 #include <QKeyEvent>
 #include "linePathMode.h"
-#include "../glRenderer.h"
+#include "../canvas.h"
 #include "../mainwindow.h"
 
-LinePathMode::LinePathMode (GLRenderer *renderer) :
-	Super (renderer) {}
+LinePathMode::LinePathMode (Canvas* canvas) :
+    Super (canvas) {}
 
 void LinePathMode::render (QPainter& painter) const
 {
diff -r ac7db4c076c3 -r edddb9b0db9e src/editmodes/linePathMode.h
--- a/src/editmodes/linePathMode.h	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/editmodes/linePathMode.h	Thu Feb 09 13:05:31 2017 +0200
@@ -24,7 +24,7 @@
 	DEFINE_CLASS (LinePathMode, AbstractDrawMode)
 
 public:
-	LinePathMode (GLRenderer* renderer);
+	LinePathMode (Canvas* canvas);
 
 	void render (QPainter& painter) const override;
 	EditModeType type() const override { return EditModeType::LinePath; }
diff -r ac7db4c076c3 -r edddb9b0db9e src/editmodes/magicWandMode.cpp
--- a/src/editmodes/magicWandMode.cpp	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/editmodes/magicWandMode.cpp	Thu Feb 09 13:05:31 2017 +0200
@@ -20,10 +20,10 @@
 #include "magicWandMode.h"
 #include "../ldDocument.h"
 #include "../mainwindow.h"
-#include "../glRenderer.h"
+#include "../canvas.h"
 
-MagicWandMode::MagicWandMode (GLRenderer* renderer) :
-	Super (renderer)
+MagicWandMode::MagicWandMode (Canvas* canvas) :
+    Super (canvas)
 {
 	// Get vertex<->object data
 	for (LDObject* obj : currentDocument()->objects())
diff -r ac7db4c076c3 -r edddb9b0db9e src/editmodes/magicWandMode.h
--- a/src/editmodes/magicWandMode.h	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/editmodes/magicWandMode.h	Thu Feb 09 13:05:31 2017 +0200
@@ -39,7 +39,7 @@
 		InternalRecursion
 	};
 
-	MagicWandMode (GLRenderer* renderer);
+	MagicWandMode (Canvas* canvas);
 	void doMagic (LDObject* obj, MagicType type);
 	virtual EditModeType type() const override;
 	virtual bool mouseReleased (MouseEventData const& data) override;
diff -r ac7db4c076c3 -r edddb9b0db9e src/editmodes/rectangleMode.cpp
--- a/src/editmodes/rectangleMode.cpp	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/editmodes/rectangleMode.cpp	Thu Feb 09 13:05:31 2017 +0200
@@ -20,10 +20,10 @@
 #include <QMouseEvent>
 #include "rectangleMode.h"
 #include "../ldObject.h"
-#include "../glRenderer.h"
+#include "../canvas.h"
 
-RectangleMode::RectangleMode (GLRenderer* renderer) :
-	Super (renderer),
+RectangleMode::RectangleMode (Canvas* canvas) :
+    Super (canvas),
 	m_rectangleVerts (QVector<Vertex>(4)) {}
 
 EditModeType RectangleMode::type() const
diff -r ac7db4c076c3 -r edddb9b0db9e src/editmodes/rectangleMode.h
--- a/src/editmodes/rectangleMode.h	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/editmodes/rectangleMode.h	Thu Feb 09 13:05:31 2017 +0200
@@ -25,7 +25,7 @@
 	QVector<Vertex> m_rectangleVerts;
 
 public:
-	RectangleMode (GLRenderer* renderer);
+	RectangleMode (Canvas* canvas);
 
 	void render (QPainter& painter) const override;
 	EditModeType type() const override;
diff -r ac7db4c076c3 -r edddb9b0db9e src/editmodes/selectMode.cpp
--- a/src/editmodes/selectMode.cpp	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/editmodes/selectMode.cpp	Thu Feb 09 13:05:31 2017 +0200
@@ -18,12 +18,12 @@
 
 #include <QMouseEvent>
 #include "selectMode.h"
-#include "../glRenderer.h"
+#include "../canvas.h"
 #include "../mainwindow.h"
 #include "../ldDocument.h"
 
-SelectMode::SelectMode (GLRenderer* renderer) :
-	Super (renderer),
+SelectMode::SelectMode (Canvas* canvas) :
+    Super (canvas),
 	m_rangepick (false) {}
 
 EditModeType SelectMode::type() const
diff -r ac7db4c076c3 -r edddb9b0db9e src/editmodes/selectMode.h
--- a/src/editmodes/selectMode.h	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/editmodes/selectMode.h	Thu Feb 09 13:05:31 2017 +0200
@@ -28,7 +28,7 @@
 	DEFINE_CLASS (SelectMode, AbstractSelectMode)
 
 public:
-	SelectMode (GLRenderer* renderer);
+	SelectMode (Canvas* canvas);
 
 	void render (QPainter& painter) const override;
 	bool mousePressed (QMouseEvent* ev) override;
diff -r ac7db4c076c3 -r edddb9b0db9e src/glRenderer.cpp
--- a/src/glRenderer.cpp	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/glRenderer.cpp	Thu Feb 09 13:05:31 2017 +0200
@@ -31,7 +31,6 @@
 #include "miscallenous.h"
 #include "editHistory.h"
 #include "dialogs.h"
-#include "messageLog.h"
 #include "glCompiler.h"
 #include "primitives.h"
 #include "documentmanager.h"
@@ -73,7 +72,6 @@
     m_model {model}
 {
 	m_camera = (Camera) m_config->camera();
-	m_currentEditMode = AbstractEditMode::createByType (this, EditModeType::Select);
 	m_compiler = new GLCompiler (this);
 	m_toolTipTimer = new QTimer (this);
 	m_toolTipTimer->setSingleShot (true);
@@ -89,9 +87,9 @@
 	{
 		const char* cameraIconNames[EnumLimits<Camera>::Count] =
 		{
-			"camera-top", "camera-front", "camera-left",
-			"camera-bottom", "camera-back", "camera-right",
-			"camera-free"
+		    "camera-top", "camera-front", "camera-left",
+		    "camera-bottom", "camera-back", "camera-right",
+		    "camera-free"
 		};
 
 		CameraIcon* info = &m_cameraIcons[camera];
@@ -108,7 +106,6 @@
 {
 	m_compiler->setRenderer (nullptr);
 	delete m_compiler;
-	delete m_currentEditMode;
 	glDeleteBuffers (1, &m_axesVbo);
 	glDeleteBuffers (1, &m_axesColorVbo);
 }
@@ -359,6 +356,9 @@
 		zoomAllToFit();
 	}
 
+	m_virtualWidth = zoom();
+	m_virtualHeight = (m_height * m_virtualWidth) / m_width;
+
 	if (m_config->drawWireframe() and not m_isDrawingSelectionScene)
 		glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
 
@@ -571,101 +571,63 @@
 	return linepen;
 }
 
-// =============================================================================
-//
+bool GLRenderer::freeCameraAllowed() const
+{
+	return true;
+}
+
 void GLRenderer::paintEvent(QPaintEvent*)
 {
 	makeCurrent();
-	m_virtualWidth = zoom();
-	m_virtualHeight = (m_height * m_virtualWidth) / m_width;
 	initGLData();
 	drawGLScene();
-	QPainter painter {this};
-	QFontMetrics metrics {QFont {}};
-	painter.setRenderHint(QPainter::Antialiasing);
 
-	// If we wish to only draw the brick, stop here
-	if (isDrawOnly() or m_isDrawingSelectionScene)
+	if (isDrawingSelectionScene())
 		return;
 
-#ifndef RELEASE
+	QPainter painter {this};
+	painter.setRenderHint(QPainter::Antialiasing);
+	overpaint(painter);
+}
+
+void GLRenderer::overpaint(QPainter &painter)
+{
+	// Draw a background for the selected camera
+	painter.setPen(m_thinBorderPen);
+	painter.setBrush(QBrush {QColor {0, 128, 160, 128}});
+	painter.drawRect(m_cameraIcons[camera()].hitRect);
+
+	// Draw the camera icons
+	for (const CameraIcon& info : m_cameraIcons)
 	{
-		QString text = format("Rotation: %1\nPanning: (%2, %3), Zoom: %4",
-		    m_rotationMatrix, panning(X), panning(Y), zoom());
-		QRect textSize = metrics.boundingRect(0, 0, m_width, m_height, Qt::AlignCenter, text);
-		painter.setPen(textPen());
-		painter.drawText((width() - textSize.width()) / 2, height() - textSize.height(), textSize.width(),
-			textSize.height(), Qt::AlignCenter, text);
-	}
-#endif
+		// Don't draw the free camera icon when we can't use the free camera
+		if (&info == &m_cameraIcons[FreeCamera] and not freeCameraAllowed())
+			continue;
 
-	if (camera() != FreeCamera)
-	{
-		// Paint the coordinates onto the screen.
-		QString text = format(tr("X: %1, Y: %2, Z: %3"), m_position3D[X], m_position3D[Y], m_position3D[Z]);
-		QFontMetrics metrics {font()};
-		QRect textSize = metrics.boundingRect (0, 0, m_width, m_height, Qt::AlignCenter, text);
-		painter.setPen(textPen());
-		painter.drawText(m_width - textSize.width(), m_height - 16,
-		                 textSize.width(), textSize.height(), Qt::AlignCenter, text);
+		painter.drawPixmap(info.targetRect, info.image, info.sourceRect);
 	}
 
+	// Tool tips
+	if (m_drawToolTip)
 	{
-		// Draw edit mode HUD
-		m_currentEditMode->render(painter);
-
-		// Draw a background for the selected camera
-		painter.setPen(m_thinBorderPen);
-		painter.setBrush(QBrush {QColor {0, 128, 160, 128}});
-		painter.drawRect(m_cameraIcons[camera()].hitRect);
-
-		// Draw the camera icons
-		for (CameraIcon& info : m_cameraIcons)
-		{
-			// Don't draw the free camera icon when we can't use the free camera
-			if (&info == &m_cameraIcons[FreeCamera] and not m_currentEditMode->allowFreeCamera())
-				continue;
-
-			painter.drawPixmap(info.targetRect, info.image, info.sourceRect);
-		}
-
-		// Draw a label for the current camera in the bottom left corner
-		{
-			int margin = 4;
-			painter.setPen(textPen());
-			painter.drawText(QPoint {margin, height() - margin - metrics.descent()}, currentCameraName());
-
-			// Also render triangle count.
-			if (m_model)
-			{
-				QPoint renderPoint = {margin, height() - margin - metrics.height() - metrics.descent()};
-				painter.drawText(renderPoint, format("△ %1", m_model->triangleCount()));
-			}
-		}
-
-		// Tool tips
-		if (m_drawToolTip)
-		{
-			if (not m_cameraIcons[m_toolTipCamera].targetRect.contains (m_mousePosition))
-				m_drawToolTip = false;
-			else
-				QToolTip::showText(m_globalpos, currentCameraName());
-		}
+		if (not m_cameraIcons[m_toolTipCamera].targetRect.contains (m_mousePosition))
+			m_drawToolTip = false;
+		else
+			QToolTip::showText(m_globalpos, currentCameraName());
 	}
 
-	// Message log
-	if (m_window->messageLog())
+	// Draw a label for the current camera in the bottom left corner
 	{
-		int y = 0;
-		int margin = 2;
-		QColor penColor = textPen().color();
+		QFontMetrics metrics {QFont {}};
+		int margin = 4;
+		painter.setPen(textPen());
+		painter.drawText(QPoint {margin, height() - margin - metrics.descent()}, currentCameraName());
 
-		for (const MessageManager::Line& line : m_window->messageLog()->getLines())
+		// Also render triangle count.
+		if (m_model)
 		{
-			penColor.setAlphaF(line.alpha);
-			painter.setPen(penColor);
-			painter.drawText(QPoint {margin, y + margin + metrics.ascent()}, line.text);
-			y += metrics.height();
+			QPoint renderPoint = {margin, height() - margin - metrics.height() - metrics.descent()};
+			painter.drawText(renderPoint, format("△ %1", m_model->triangleCount()));
 		}
 	}
 }
@@ -695,41 +657,24 @@
 
 // =============================================================================
 //
-void GLRenderer::mouseReleaseEvent(QMouseEvent* ev)
+void GLRenderer::mouseReleaseEvent(QMouseEvent* event)
 {
-	bool wasLeft = (m_lastButtons & Qt::LeftButton) and not (ev->buttons() & Qt::LeftButton);
-	Qt::MouseButtons releasedbuttons = m_lastButtons & ~ev->buttons();
+	bool wasLeft = (m_lastButtons & Qt::LeftButton) and not (event->buttons() & Qt::LeftButton);
 	m_panning = false;
 
-	if (wasLeft)
+	// Check if we selected a camera icon
+	if (wasLeft and not mouseHasMoved())
 	{
-		// Check if we selected a camera icon
-		if (not mouseHasMoved())
+		for (CameraIcon& info : m_cameraIcons)
 		{
-			for (CameraIcon& info : m_cameraIcons)
+			if (info.targetRect.contains (event->pos()))
 			{
-				if (info.targetRect.contains (ev->pos()))
-				{
-					setCamera (info.camera);
-					goto end;
-				}
+				setCamera (info.camera);
+				break;
 			}
 		}
 	}
 
-	if (not isDrawOnly())
-	{
-		AbstractEditMode::MouseEventData data;
-		data.ev = ev;
-		data.mouseMoved = mouseHasMoved();
-		data.keymods = m_currentKeyboardModifiers;
-		data.releasedButtons = releasedbuttons;
-
-		if (m_currentEditMode->mouseReleased (data))
-			goto end;
-	}
-
-end:
 	update();
 	m_totalMouseMove = 0;
 }
@@ -738,11 +683,8 @@
 //
 void GLRenderer::mousePressEvent(QMouseEvent* event)
 {
+	m_lastButtons = event->buttons();
 	m_totalMouseMove = 0;
-	m_lastButtons = event->buttons();
-
-	if (m_currentEditMode->mousePressed(event))
-		event->accept();
 }
 
 // =============================================================================
@@ -754,32 +696,29 @@
 	m_totalMouseMove += qAbs(xMove) + qAbs(yMove);
 	m_isCameraMoving = false;
 
-	if (not m_currentEditMode->mouseMoved (event))
-	{
-		bool left = event->buttons() & Qt::LeftButton;
-		bool mid = event->buttons() & Qt::MidButton;
-		bool shift = event->modifiers() & Qt::ShiftModifier;
+	bool left = event->buttons() & Qt::LeftButton;
+	bool mid = event->buttons() & Qt::MidButton;
+	bool shift = event->modifiers() & Qt::ShiftModifier;
 
-		if (mid or (left and shift))
-		{
-			panning(X) += 0.03f * xMove * (zoom() / 7.5f);
-			panning(Y) -= 0.03f * yMove * (zoom() / 7.5f);
-			m_panning = true;
-			m_isCameraMoving = true;
-		}
-		else if (left and camera() == FreeCamera and (xMove != 0 or yMove != 0))
-		{
-			// Apply current rotation input to the rotation matrix
-			// ref: https://forums.ldraw.org/thread-22006-post-24426.html#pid24426
-			glPushMatrix();
-			glLoadIdentity();
-			// 0.6 is an arbitrary rotation sensitivity scalar
-			glRotatef(0.6 * hypot(xMove, yMove), yMove, xMove, 0);
-			glMultMatrixf(m_rotationMatrix.constData());
-			glGetFloatv(GL_MODELVIEW_MATRIX, m_rotationMatrix.data());
-			glPopMatrix();
-			m_isCameraMoving = true;
-		}
+	if (mid or (left and shift))
+	{
+		panning(X) += 0.03f * xMove * (zoom() / 7.5f);
+		panning(Y) -= 0.03f * yMove * (zoom() / 7.5f);
+		m_panning = true;
+		m_isCameraMoving = true;
+	}
+	else if (left and camera() == FreeCamera and (xMove != 0 or yMove != 0))
+	{
+		// Apply current rotation input to the rotation matrix
+		// ref: https://forums.ldraw.org/thread-22006-post-24426.html#pid24426
+		glPushMatrix();
+		glLoadIdentity();
+		// 0.6 is an arbitrary rotation sensitivity scalar
+		glRotatef(0.6 * hypot(xMove, yMove), yMove, xMove, 0);
+		glMultMatrixf(m_rotationMatrix.constData());
+		glGetFloatv(GL_MODELVIEW_MATRIX, m_rotationMatrix.data());
+		glPopMatrix();
+		m_isCameraMoving = true;
 	}
 
 	// Start the tool tip timer
@@ -791,9 +730,6 @@
 	m_globalpos = event->globalPos();
 	m_mousePositionF = event->localPos();
 
-	// Calculate 3d position of the cursor
-	m_position3D = (camera() != FreeCamera) ? convert2dTo3d (m_mousePosition, true) : Origin;
-
 	highlightCursorObject();
 	update();
 	event->accept();
@@ -811,7 +747,6 @@
 void GLRenderer::keyReleaseEvent(QKeyEvent* event)
 {
 	m_currentKeyboardModifiers = event->modifiers();
-	m_currentEditMode->keyReleased(event);
 	update();
 }
 
@@ -848,7 +783,7 @@
 void GLRenderer::setCamera(Camera camera)
 {
 	// The edit mode may forbid the free camera.
-	if (m_currentEditMode->allowFreeCamera() or camera != FreeCamera)
+	if (freeCameraAllowed() or camera != FreeCamera)
 	{
 		m_camera = camera;
 		m_config->setCamera(int {camera});
@@ -969,31 +904,6 @@
 
 // =============================================================================
 //
-void GLRenderer::setEditMode(EditModeType a)
-{
-	if (m_currentEditMode and m_currentEditMode->type() == a)
-		return;
-
-	delete m_currentEditMode;
-	m_currentEditMode = AbstractEditMode::createByType(this, a);
-
-	// If we cannot use the free camera, use the top one instead.
-	if (camera() == FreeCamera and not m_currentEditMode->allowFreeCamera())
-		setCamera(TopCamera);
-
-	m_window->updateEditModeActions();
-	update();
-}
-
-// =============================================================================
-//
-EditModeType GLRenderer::currentEditModeType() const
-{
-	return m_currentEditMode->type();
-}
-
-// =============================================================================
-//
 void GLRenderer::setPicking(bool value)
 {
 	m_isDrawingSelectionScene = value;
@@ -1237,14 +1147,6 @@
 
 // =============================================================================
 //
-void GLRenderer::mouseDoubleClickEvent (QMouseEvent* ev)
-{
-	if (m_currentEditMode->mouseDoubleClicked (ev))
-		ev->accept();
-}
-
-// =============================================================================
-//
 void GLRenderer::highlightCursorObject()
 {
 	if (not m_config->highlightObjectBelowCursor() and objectAtCursor() == nullptr)
@@ -1292,26 +1194,6 @@
 		ev->acceptProposedAction();
 }
 
-void GLRenderer::dropEvent (QDropEvent* ev)
-{
-	if (m_window and ev->source() == m_window->getPrimitivesTree())
-	{
-		PrimitiveTreeItem* item = static_cast<PrimitiveTreeItem*> (m_window->getPrimitivesTree()->currentItem());
-		QString primitiveName = item->primitive()->name;
-		LDSubfileReference* ref = currentDocument()->emplaceAt<LDSubfileReference>(m_window->suggestInsertPoint());
-		ref->setFileInfo (m_documents->getDocumentByName (primitiveName));
-		currentDocument()->addToSelection(ref);
-		m_window->buildObjectList();
-		refresh();
-		ev->acceptProposedAction();
-	}
-}
-
-Vertex const& GLRenderer::position3D() const
-{
-	return m_position3D;
-}
-
 const CameraInfo& GLRenderer::cameraInfo (Camera camera) const
 {
 	if (valueInEnum<Camera>(camera))
@@ -1372,3 +1254,18 @@
 {
 	return m_zoom[camera()];
 }
+
+const QGenericMatrix<4, 4, GLfloat>& GLRenderer::rotationMatrix() const
+{
+	return m_rotationMatrix;
+}
+
+bool GLRenderer::isDrawingSelectionScene() const
+{
+	return m_isDrawingSelectionScene;
+}
+
+Qt::MouseButtons GLRenderer::lastButtons() const
+{
+	return m_lastButtons;
+}
diff -r ac7db4c076c3 -r edddb9b0db9e src/glRenderer.h
--- a/src/glRenderer.h	Thu Feb 09 11:53:55 2017 +0200
+++ b/src/glRenderer.h	Thu Feb 09 13:05:31 2017 +0200
@@ -21,7 +21,6 @@
 #include "main.h"
 #include "model.h"
 #include "glShared.h"
-#include "editmodes/abstractEditMode.h"
 
 class GLCompiler;
 class MessageManager;
@@ -83,7 +82,6 @@
 	Vertex convert2dTo3d(const QPoint& pos2d, bool snap) const;
 	QPoint convert3dTo2d(const Vertex& pos3d) const;
 	QString currentCameraName() const;
-	EditModeType currentEditModeType() const;
 	int depthNegateFactor() const;
 	void drawPoint(QPainter& painter, QPointF pos, QColor color = QColor (64, 192, 0)) const;
 	void drawBlipCoordinates(QPainter& painter, const Vertex& pos3d);
@@ -110,7 +108,6 @@
 	void pick(int mouseX, int mouseY, bool additive);
 	void pick(const QRect& range, bool additive);
 	LDObject* pickOneObject(int mouseX, int mouseY);
-	Vertex const& position3D() const;
 	void refresh();
 	void resetAllAngles();
 	void resetAngles();
@@ -118,7 +115,6 @@
 	void setCamera(Camera cam);
 	void setDepthValue(double depth);
 	void setDrawOnly(bool value);
-	void setEditMode(EditModeType type);
 	void setPicking(bool a);
 	QPen textPen() const;
 	void zoomNotch(bool inward);
@@ -126,19 +122,32 @@
 protected:
 	void contextMenuEvent(QContextMenuEvent* event);
 	void dragEnterEvent(QDragEnterEvent* event);
-	void dropEvent(QDropEvent* event);
 	void initializeGL();
 	void keyPressEvent(QKeyEvent* event);
 	void keyReleaseEvent(QKeyEvent* event);
 	void leaveEvent(QEvent* event);
-	void mouseDoubleClickEvent(QMouseEvent* event);
 	void mousePressEvent(QMouseEvent* event);
 	void mouseMoveEvent(QMouseEvent* ev);
 	void mouseReleaseEvent(QMouseEvent* ev);
-	void paintEvent(QPaintEvent* ev);
+	void paintEvent(QPaintEvent*);
 	void resizeGL(int w, int h);
 	void wheelEvent(QWheelEvent* ev);
 
+	virtual void overpaint(QPainter& painter);
+	virtual bool freeCameraAllowed() const;
+	bool isDrawingSelectionScene() const;
+	Qt::MouseButtons lastButtons() const;
+	double panning (Axis ax) const;
+	const QGenericMatrix<4, 4, GLfloat>& rotationMatrix() const;
+	double& panning (Axis ax);
+	double& zoom();
+
+	template<typename... Args>
+	QString format (QString fmtstr, Args... args)
+	{
+		return ::format (fmtstr, args...);
+	}
+
 private:
 	Model* const m_model;
 	GLCompiler* m_compiler;
@@ -147,7 +156,6 @@
 	QTimer* m_toolTipTimer;
 	Qt::MouseButtons m_lastButtons;
 	Qt::KeyboardModifiers m_currentKeyboardModifiers;
-	Vertex m_position3D;
 	double m_virtualWidth;
 	double m_virtualHeight;
 	QGenericMatrix<4, 4, GLfloat> m_rotationMatrix;
@@ -175,24 +183,14 @@
 	int m_height = 0;
 	int m_totalMouseMove;
 	QColor m_backgroundColor;
-	AbstractEditMode* m_currentEditMode = nullptr;
 	GLuint m_axesVbo;
 	GLuint m_axesColorVbo;
 
 	void calcCameraIcons();
 	void drawVbos (SurfaceVboType surface, ComplementVboType colors, GLenum type);
-	double& panning (Axis ax);
-	double panning (Axis ax) const;
-	double& zoom();
 	void zoomToFit();
 	void zoomAllToFit();
 
-	template<typename... Args>
-	QString format (QString fmtstr, Args... args)
-	{
-		return ::format (fmtstr, args...);
-	}
-
 private slots:
 	void	slot_toolTipTimer();
 	void	initializeAxes();