Changed all resources to .png files;

Added 'snap to grid' to symbol editor

src/data/action/symbol.cpp

@@ -18,8 +18,16 @@ DECLARE_TYPEOF_COLLECTION(ControlPointP);
 
 SymbolPartMoveAction::SymbolPartMoveAction(const set<SymbolPartP>& parts)
 	: parts(parts)
+	, min_pos(Vector2D::infinity()), max_pos(-Vector2D::infinity())
 	, constrain(false)
-{}
+	, snap(0)
+{
+	// Determine min/max_pos
+	FOR_EACH(p,parts) {
+		min_pos = piecewise_min(min_pos, p->min_pos);
+		max_pos = piecewise_max(max_pos, p->max_pos);
+	}
+}
 
 String SymbolPartMoveAction::getName(bool to_undo) const {
 	return parts.size() == 1 ? _("Move shape") : _("Move shapes");
@@ -39,9 +47,10 @@ void SymbolPartMoveAction::perform(bool to_undo) {
 
 void SymbolPartMoveAction::move(const Vector2D& deltaDelta) {
 	delta += deltaDelta;
-	// Move each point by deltaDelta, possibly constrained
-	Vector2D d = constrainVector(delta, constrain);
+	// Determine actual delta, possibly constrained and snapped
+	Vector2D d = constrain_snap_vector_offset(min_pos, max_pos, delta, constrain, snap);
 	Vector2D dd = d - moved;
+	// Move each point by d
 	FOR_EACH(p, parts) {
 		p->min_pos += dd;
 		p->max_pos += dd;
@@ -114,7 +123,8 @@ void SymbolPartRotateAction::rotateBy(double deltaAngle) {
 
 SymbolPartShearAction::SymbolPartShearAction(const set<SymbolPartP>& parts, const Vector2D& center)
 	: SymbolPartMatrixAction(parts, center)
-	, constrain(false)
+//	, constrain(false)
+	, snap(0)
 {}
 
 String SymbolPartShearAction::getName(bool to_undo) const {
@@ -130,12 +140,14 @@ void SymbolPartShearAction::perform(bool to_undo) {
 	//  <1  -x>  /
 	//  <-y  1> / (1 - xy)
 	// we have: xy = 0 => (1 - xy) = 1
-	shearBy(-shear);
+	shearBy(-moved);
 }
 
 void SymbolPartShearAction::move(const Vector2D& deltaShear) {
 	shear += deltaShear;
-	shearBy(deltaShear);
+	Vector2D d = snap_vector(shear - moved, snap);
+	shearBy(d);
+	moved += d;
 }
 
 void SymbolPartShearAction::shearBy(const Vector2D& shear) {
@@ -154,6 +166,7 @@ SymbolPartScaleAction::SymbolPartScaleAction(const set<SymbolPartP>& parts, int
 	: parts(parts)
 	, scaleX(scaleX), scaleY(scaleY)
 	, constrain(false)
+	, snap(0)
 {
 	// Find min and max coordinates
 	oldMin          =  Vector2D::infinity();
@@ -191,10 +204,19 @@ void SymbolPartScaleAction::update() {
 	// the size after the move
 	newMin = newRealMin; newSize = newRealSize;
 	if (constrain && scaleX != 0 && scaleY != 0) {
+		// TODO : snapping
 		Vector2D scale = newSize.div(tmpSize);
-		scale = constrainVector(scale, true, true);
+		scale = constrain_vector(scale, true, true);
 		newSize = tmpSize.mul(scale);
 		newMin += (newRealSize - newSize).mul(Vector2D(scaleX == -1 ? 1 : 0, scaleY == -1 ? 1 : 0));
+	} else if (snap >= 0) {
+		if (scaleX + scaleY < 0) {
+			newMin = snap_vector(newMin, snap);
+			newSize += newRealMin - newMin;
+		} else {
+			Vector2D newMax = snap_vector(newMin + newSize, snap);
+			newSize = newMax - newMin;
+		}
 	}
 	// now move all points
 	transformAll();

src/data/action/symbol.hpp

@@ -43,8 +43,10 @@ class SymbolPartMoveAction : public SymbolPartAction {
 	set<SymbolPartP> parts;		///< Parts to move
 	Vector2D delta;				///< How much to move
 	Vector2D moved;				///< How much has been moved
+	Vector2D min_pos, max_pos;	///< Bounding box of the thing we are moving
   public:
 	bool constrain;				///< Constrain movement?
+	int snap;					///< Snap to grid?
 };
 
 // ----------------------------------------------------------------------------- : Rotating symbol parts
@@ -101,9 +103,11 @@ class SymbolPartShearAction : public SymbolPartMatrixAction {
 	
   private:
 	Vector2D shear;				///< Shearing, shear.x == 0 || shear.y == 0
+	Vector2D moved;
 	void shearBy(const Vector2D& shear);
   public:
-	bool constrain;				///< Constrain movement?
+//	bool constrain;				///< Constrain movement?
+	int snap;					///< Snap to grid?
 };
 
 
@@ -136,6 +140,7 @@ class SymbolPartScaleAction : public SymbolPartAction {
 	}
   public:
 	bool constrain;				///< Constrain movement?
+	int snap;					///< Snap to grid?
 };
 
 // ----------------------------------------------------------------------------- : Change combine mode

src/data/action/symbol_part.cpp

@@ -16,12 +16,12 @@ DECLARE_TYPEOF_COLLECTION(ControlPointP);
 
 inline double sgn(double v) { return  v > 0 ? 1 : -1; }
 
-Vector2D constrainVector(const Vector2D& v, bool constrain, bool onlyDiagonal) {
+Vector2D constrain_vector(const Vector2D& v, bool constrain, bool only_diagonal) {
 	if (!constrain) return v;
 	double ax = fabs(v.x), ay = fabs(v.y);
-	if (ax * 2 < ay && !onlyDiagonal) {
+	if (ax * 2 < ay && !only_diagonal) {
 		return Vector2D(0, v.y); // vertical
-	} else if(ay * 2 < ax && !onlyDiagonal) {
+	} else if(ay * 2 < ax && !only_diagonal) {
 		return Vector2D(v.x, 0); // horizontal
 	} else {
 		return Vector2D(         // diagonal
@@ -31,11 +31,62 @@ Vector2D constrainVector(const Vector2D& v, bool constrain, bool onlyDiagonal) {
 	}
 }
 
+inline double snap(double x, int steps) {
+	return steps <= 0 ? x : floor(x * steps + 0.5) / steps;
+}
+
+Vector2D snap_vector(const Vector2D& v, int steps) {
+	return Vector2D(snap(v.x, steps), snap(v.y, steps));
+}
+
+Vector2D constrain_snap_vector(const Vector2D& v, const Vector2D& d, bool constrain, int steps) {
+	if (!constrain) return snap_vector(v+d, steps);
+	double ax = fabs(d.x), ay = fabs(d.y);
+	if (ax * 2 < ay) {
+		return Vector2D(v.x, snap(d.y + v.y, steps)); // vertical
+	} else if(ay * 2 < ax) {
+		return Vector2D(snap(d.x + v.x, steps), v.y); // horizontal
+	} else {	
+		double dc = (ax + ay) / 2; // delta in both directions
+		double dxs = snap(v.x + dc, steps) - v.x; // snapped to x
+		double dys = snap(v.y + dc, steps) - v.y; // snapped to y
+		if (fabs(dxs-dc) < fabs(dys-dc)) {
+			// take the one that is closest to the unsnaped delta
+			return Vector2D(v.x + sgn(d.x) * dxs, v.y + sgn(d.y) * dxs);
+		} else {
+			return Vector2D(v.x + sgn(d.x) * dys, v.y + sgn(d.y) * dys);
+		}
+	}
+}
+
+Vector2D constrain_snap_vector_offset(const Vector2D& off1, const Vector2D& d, bool constrain, int steps) {
+	return constrain_snap_vector(off1, d, constrain, steps) - off1;
+}
+// calculate constrained delta for the given offset, store in output if it is better
+void constrain_snap_vector_offset_(const Vector2D& off, const Vector2D& d, bool constrain, int steps, Vector2D& best, double& best_length) {
+	Vector2D d2 = constrain_snap_vector_offset(off, d, constrain, steps);
+	double l2 = d2.lengthSqr();
+	if (l2 < best_length) {
+		best_length = l2;
+		best        = d2;
+	}
+}
+Vector2D constrain_snap_vector_offset(const Vector2D& off1, const Vector2D& off2, const Vector2D& d, bool constrain, int steps) {
+	Vector2D dd; double l = numeric_limits<double>::infinity();
+	constrain_snap_vector_offset_(off1,                    d, constrain, steps, dd, l);
+	constrain_snap_vector_offset_(off2,                    d, constrain, steps, dd, l);
+	constrain_snap_vector_offset_(Vector2D(off1.x,off2.y), d, constrain, steps, dd, l);
+	constrain_snap_vector_offset_(Vector2D(off2.x,off1.y), d, constrain, steps, dd, l);
+	return dd;
+}
+
+
 // ----------------------------------------------------------------------------- : Move control point
 
 ControlPointMoveAction::ControlPointMoveAction(const set<ControlPointP>& points)
 	: points(points)
 	, constrain(false)
+	, snap(0)
 {
 	oldValues.reserve(points.size());
 	FOR_EACH(p, points) {
@@ -48,13 +99,6 @@ String ControlPointMoveAction::getName(bool to_undo) const {
 }
 
 void ControlPointMoveAction::perform(bool to_undo) {
-	/*
-	set<ControlPointP>::const_iterator it  = points.begin();
-	vector<Vector2D>  ::iterator       it2 = oldValues.begin();
-	for( ; it != points.end() && it2 != oldValues.end() ; ++it, ++it2) {
-		swap<Vector2D>((*it)->pos, *it2);
-	}
-	*/
 	FOR_EACH_2(p,points,  op,oldValues) {
 		swap(p->pos, op);
 	}
@@ -63,11 +107,10 @@ void ControlPointMoveAction::perform(bool to_undo) {
 void ControlPointMoveAction::move (const Vector2D& deltaDelta) {
 	delta += deltaDelta;
 	// Move each point by delta, possibly constrained
-	Vector2D d = constrainVector(delta, constrain);
 	set<ControlPointP>::const_iterator it  = points.begin();
 	vector<Vector2D>  ::iterator       it2 = oldValues.begin();
 	for( ; it != points.end() && it2 != oldValues.end() ; ++it, ++it2) {
-		(*it)->pos = (*it2) + d;
+		(*it)->pos = constrain_snap_vector(*it2, delta, constrain, snap);
 	}
 }
 
@@ -79,6 +122,7 @@ HandleMoveAction::HandleMoveAction(const SelectedHandle& handle)
 	, old_handle(handle.getHandle())
 	, old_other (handle.getOther())
 	, constrain(false)
+	, snap(0)
 {}
 
 String HandleMoveAction::getName(bool to_undo) const {
@@ -92,7 +136,7 @@ void HandleMoveAction::perform(bool to_undo) {
 
 void HandleMoveAction::move(const Vector2D& deltaDelta) {
 	delta += deltaDelta;
-	handle.getHandle() = constrainVector(old_handle + delta, constrain);
+	handle.getHandle() = constrain_snap_vector_offset(handle.point->pos, old_handle + delta, constrain, snap);
 	handle.getOther()  = old_other;
 	handle.onUpdateHandle();
 }

src/data/action/symbol_part.hpp

@@ -20,9 +20,25 @@
 
 // ----------------------------------------------------------------------------- : Utility
 
-/// Constrain a vector to be horizontal, vertical or diagonal
-/// If constraint==false does nothing
-Vector2D constrainVector(const Vector2D& v, bool constrain = true, bool onlyDiagonal = false);
+/// Constrain a vector to be horizontal, vertical or diagonal.
+/** If constraint==false does nothing
+ */
+Vector2D constrain_vector(const Vector2D& v, bool constrain = true, bool only_diagonal = false);
+
+/// Snap a vector to the grid with the given number of steps per unit interval.
+/** If spacing==0 does not snap. */
+Vector2D snap_vector(const Vector2D& v, int steps);
+
+/// Add a delta to a vector
+/** Possibly constrain the delta, and snap to result to grid
+ */
+Vector2D constrain_snap_vector(const Vector2D& v, const Vector2D& d, bool constrain, int steps);
+
+/// Constrain a vector a vector, and snap to an offset grid
+Vector2D constrain_snap_vector_offset(const Vector2D& off1, const Vector2D& d, bool constrain, int steps);
+/// Constrain a vector a vector, and snap to two possible offset grids
+/** Takes the closest snap */
+Vector2D constrain_snap_vector_offset(const Vector2D& off1, const Vector2D& off2, const Vector2D& d, bool constrain, int steps);
 
 // ----------------------------------------------------------------------------- : Move control point
 
@@ -43,6 +59,7 @@ class ControlPointMoveAction : public Action {
 	Vector2D delta;				///< Amount we moved
   public:
 	bool constrain;				///< Constrain movement?
+	int snap;					///< Snap to grid?
 };
 
 // ----------------------------------------------------------------------------- : Move handle
@@ -65,6 +82,7 @@ class HandleMoveAction : public Action {
 	Vector2D delta;				///< Amount we moved
   public:
 	bool constrain;				///< Constrain movement?
+	int snap;					///< Snap to grid?
 };
 
 // ----------------------------------------------------------------------------- : Segment mode

src/data/format/image_to_symbol.cpp

@@ -220,6 +220,10 @@ SymbolP import_symbol(Image& img) {
 	if (is_mse1_symbol(img)) {
 		Image img2 = img.GetSubImage(wxRect(20,0,40,40));
 		symbol = image_to_symbol(img2);
+	} else if (img.GetWidth() > 100 || img.GetHeight() > 100) {
+		// 100x100 ought to be enough, we trow out most afterwards data anyway
+		Image resampled = img.Rescale(100,100);
+		symbol = image_to_symbol(resampled);
 	} else {
 		symbol = image_to_symbol(img);
 	}
@@ -387,7 +391,7 @@ void remove_point(SymbolPart& part, int i);
  *  stop when the cost becomes too high
  */
 void remove_points(SymbolPart& part) {
-	const double treshold = 0.002; // maximum cost
+	const double treshold = 0.0002; // maximum cost
 	while (true) {
 		// Find the point with the lowest cost of removal
 		int best = -1;

src/data/settings.cpp

@@ -88,6 +88,9 @@ Settings::Settings()
 	, set_window_width     (790)
 	, set_window_height    (300)
 	, card_notes_height    (40)
+	, symbol_grid_size     (30)
+	, symbol_grid          (true)
+	, symbol_grid_snap     (false)
 	, updates_url          (_("http://magicseteditor.sourceforge.net/updates"))
 	, check_updates        (CHECK_IF_CONNECTED)
 	, website_url          (_("http://magicseteditor.sourceforge.net/"))
@@ -155,6 +158,9 @@ IMPLEMENT_REFLECTION(Settings) {
 	REFLECT(set_window_width);
 	REFLECT(set_window_height);
 	REFLECT(card_notes_height);
+	REFLECT(symbol_grid_size);
+	REFLECT(symbol_grid);
+	REFLECT(symbol_grid_snap);
 	REFLECT(default_game);
 	REFLECT(apprentice_location);
 	REFLECT(updates_url);

src/data/settings.hpp

@@ -100,6 +100,11 @@ class Settings {
 	UInt set_window_height;
 	UInt card_notes_height;
 	
+	// --------------------------------------------------- : Symbol editor
+	UInt symbol_grid_size;
+	bool symbol_grid;
+	bool symbol_grid_snap;
+	
 	// --------------------------------------------------- : Default pacakge selections
 	String default_game;
 	

src/gui/control/gallery_list.cpp

@@ -120,8 +120,8 @@ void GalleryList::onChar(wxKeyEvent& ev) {
 
 wxSize GalleryList::DoGetBestSize() const {
 	wxSize ws = GetSize(), cs = GetClientSize();
-	const int w = item_size.x + SPACING;
-	const int h = item_size.y + SPACING;
+	const int w = item_size.x + 2*MARGIN + 2*BORDER;
+	const int h = item_size.y + 2*MARGIN + 2*BORDER;
 	return wxSize(w, h) + ws - cs;
 }
 

src/gui/symbol/basic_shape_editor.cpp

@@ -56,9 +56,9 @@ void SymbolBasicShapeEditor::destroyUI(wxToolBar* tb, wxMenuBar* mb) {
 	tb->RemoveChild(sidesL);
 	tb->RemoveChild(sides);
 	// HACK: hardcoded size of rest of toolbar
-	tb->DeleteToolByPos(4); // delete separator
-	tb->DeleteToolByPos(4); // delete sidesL
-	tb->DeleteToolByPos(4); // delete sides
+	tb->DeleteToolByPos(7); // delete separator
+	tb->DeleteToolByPos(7); // delete sidesL
+	tb->DeleteToolByPos(7); // delete sides
 	#if wxVERSION_NUMBER < 2600
 		delete sides;
 		delete sidesL;

src/gui/symbol/control.cpp

@@ -14,6 +14,7 @@
 #include <gui/symbol/basic_shape_editor.hpp>
 #include <gui/util.hpp>
 #include <data/action/symbol.hpp>
+#include <data/settings.hpp>
 #include <util/window_id.hpp>
 #include <wx/dcbuffer.h>
 
@@ -65,7 +66,18 @@ void SymbolControl::onModeChange(wxCommandEvent& ev) {
 }
 
 void SymbolControl::onExtraTool(wxCommandEvent& ev) {
+	switch (ev.GetId()) {
+		case ID_VIEW_GRID:
+			settings.symbol_grid = !settings.symbol_grid;
+			Refresh(false);
+			break;
+		case ID_VIEW_GRID_SNAP:
+			settings.symbol_grid_snap = !settings.symbol_grid_snap;
+			Refresh(false);
+			break;
+		default:
 			if (editor) editor->onCommand(ev.GetId());
+	}
 }
 
 void SymbolControl::onAction(const Action& action, bool undone) {
@@ -135,6 +147,25 @@ void SymbolControl::draw(DC& dc) {
 	clearDC(dc, Color(0, 128, 0));
 	// draw symbol iself
 	SymbolViewer::draw(dc);
+	// draw grid
+	if (settings.symbol_grid) {
+		wxSize s = dc.GetSize();
+		int lines = settings.symbol_grid_size;
+		for (int i = 0 ; i <= lines ; ++i) {
+			int x = rotation.trS((double)i/lines-0.0001);
+			//dc.SetPen(Color(0, i%5 == 0 ? 64 : 31, 0));
+			//dc.SetPen(Color(i%5 == 0 ? 64 : 31, 0, 0));
+			dc.SetLogicalFunction(wxAND);
+			dc.SetPen(i%5 == 0 ? Color(191,255,191) : Color(191, 255, 191));
+			dc.DrawLine(x, 0, x, s.y);
+			dc.DrawLine(0, x, s.x, x);
+			dc.SetLogicalFunction(wxOR);
+			dc.SetPen(i%5 == 0 ? Color(0,63,0) : Color(0, 31, 0));
+			dc.DrawLine(x, 0, x, s.y);
+			dc.DrawLine(0, x, s.x, x);
+		}
+		dc.SetLogicalFunction(wxCOPY);
+	}
 	// draw editing overlay
 	if (editor) {
 		editor->draw(dc);
@@ -196,7 +227,7 @@ void SymbolControl::onChar(wxKeyEvent& ev) {
 }
 
 void SymbolControl::onSize(wxSizeEvent& ev) {
-	wxSize s = ev.GetSize();
+	wxSize s = GetClientSize();
 	rotation.setZoom(min(s.GetWidth(), s.GetHeight()));
 	Refresh(false);
 }
@@ -213,6 +244,12 @@ void SymbolControl::onUpdateUI(wxUpdateUIEvent& ev) {
 		case ID_MODE_PAINT:
 			ev.Enable(false); // TODO
 			break;
+		case ID_VIEW_GRID:
+			ev.Check(settings.symbol_grid);
+			break;
+		case ID_VIEW_GRID_SNAP:
+			ev.Check(settings.symbol_grid_snap);
+			break;
 		default:
 			if (ev.GetId() >= ID_CHILD_MIN && ev.GetId() < ID_CHILD_MAX) {
 				editor->onUpdateUI(ev); // foward to editor

src/gui/symbol/point_editor.cpp

@@ -11,6 +11,7 @@
 #include <gui/util.hpp>
 #include <gfx/bezier.hpp>
 #include <data/action/symbol_part.hpp>
+#include <data/settings.hpp>
 #include <util/window_id.hpp>
 #include <util/error.hpp>
 
@@ -172,8 +173,8 @@ void SymbolPointEditor::destroyUI(wxToolBar* tb, wxMenuBar* mb) {
 	tb->DeleteTool(ID_LOCK_DIR);
 	tb->DeleteTool(ID_LOCK_SIZE);
 	// HACK: hardcoded size of rest of toolbar
-	tb->DeleteToolByPos(4); // delete separator
-	tb->DeleteToolByPos(4); // delete separator
+	tb->DeleteToolByPos(7); // delete separator
+	tb->DeleteToolByPos(7); // delete separator
 	// TODO : menu bar
 	//mb->Remove(2)
 }
@@ -215,8 +216,10 @@ void SymbolPointEditor::onCommand(int id) {
 	switch (id) {
 		case ID_SEGMENT_LINE: case ID_SEGMENT_CURVE:
 			onChangeSegment( static_cast<SegmentMode>(id - ID_SEGMENT) );
+			break;
 		case ID_LOCK_FREE: case ID_LOCK_DIR: case ID_LOCK_SIZE:
 			onChangeLock( static_cast<LockMode>(id - ID_LOCK) );
+			break;
 	}
 }
 
@@ -273,6 +276,10 @@ void SymbolPointEditor::onMouseMove(const Vector2D& from, const Vector2D& to, wx
 	control.Refresh(false);
 }
 
+template <typename Event> int snap(Event& ev) {
+	return settings.symbol_grid_snap != ev.ShiftDown() ? settings.symbol_grid_size : 0; // shift toggles snap
+}
+
 void SymbolPointEditor::onMouseDrag(const Vector2D& from, const Vector2D& to, wxMouseEvent& ev) {
 	Vector2D delta = to - from;
 	if (selection == SELECTED_LINE && ev.AltDown()) {
@@ -293,6 +300,7 @@ void SymbolPointEditor::onMouseDrag(const Vector2D& from, const Vector2D& to, wx
 			getSymbol()->actions.add(controlPointMoveAction);
 		}
 		controlPointMoveAction->constrain = ev.ControlDown(); // ctrl constrains
+		controlPointMoveAction->snap      = snap(ev);
 		controlPointMoveAction->move(delta);
 		new_point += delta;
 		control.Refresh(false);
@@ -303,6 +311,7 @@ void SymbolPointEditor::onMouseDrag(const Vector2D& from, const Vector2D& to, wx
 			getSymbol()->actions.add(handleMoveAction);
 		}
 		handleMoveAction->constrain  = ev.ControlDown(); // ctrl constrains
+		handleMoveAction->snap = snap(ev);
 		handleMoveAction->move(delta);
 		control.Refresh(false);
 	}
@@ -323,14 +332,16 @@ void SymbolPointEditor::onKeyChange(wxKeyEvent& ev) {
 			SetStatusText(_("Alt + drag to move curve;  double click to add control point on this line"));
 		}
 		control.Refresh(false);
-	} else if (ev.GetKeyCode() == WXK_CONTROL) {
-		// constrain changed
+	} else if (ev.GetKeyCode() == WXK_CONTROL || ev.GetKeyCode() == WXK_SHIFT) {
+		// constrain/snap changed
 		if (controlPointMoveAction) {
 			controlPointMoveAction->constrain = ev.ControlDown();
+			controlPointMoveAction->snap = snap(ev);
 			controlPointMoveAction->move(Vector2D()); //refresh action
 			control.Refresh(false);
 		} else if (handleMoveAction) {
 			handleMoveAction->constrain = ev.ControlDown();
+			handleMoveAction->snap = snap(ev);
 			handleMoveAction->move(Vector2D()); //refresh action
 			control.Refresh(false);
 		}

src/gui/symbol/select_editor.cpp

@@ -11,6 +11,7 @@
 #include <gui/util.hpp>
 #include <util/window_id.hpp>
 #include <data/action/symbol.hpp>
+#include <data/settings.hpp>
 #include <gfx/gfx.hpp>
 
 DECLARE_TYPEOF_COLLECTION(SymbolPartP);
@@ -122,7 +123,7 @@ void SymbolSelectEditor::destroyUI(wxToolBar* tb, wxMenuBar* mb) {
 	tb->DeleteTool(ID_PART_OVERLAP);
 	tb->DeleteTool(ID_PART_BORDER);
 	// HACK: hardcoded size of rest of toolbar
-	tb->DeleteToolByPos(4); // delete separator
+	tb->DeleteToolByPos(7); // delete separator
 }
 
 void SymbolSelectEditor::onUpdateUI(wxUpdateUIEvent& ev) {
@@ -173,14 +174,8 @@ int SymbolSelectEditor::modeToolId() {
 // ----------------------------------------------------------------------------- : Mouse Events
 
 void SymbolSelectEditor::onLeftDown  (const Vector2D& pos, wxMouseEvent& ev) {
-}
-
-void SymbolSelectEditor::onLeftUp    (const Vector2D& pos, wxMouseEvent& ev) {
-	if (isEditing()) {
-		// stop editing
-		resetActions();
-	} else {
-		// mouse not moved, change selection
+	have_dragged = true;
+	// change selection
 	// Are we on a handle?
 	int dx, dy;
 	if (onAnyHandle(pos, &dx, &dy)) return; // don't change the selection
@@ -197,9 +192,8 @@ void SymbolSelectEditor::onLeftUp    (const Vector2D& pos, wxMouseEvent& ev) {
 			}
 		} else {
 			if (control.selected_parts.find(part) != control.selected_parts.end()) {
-					// already selected, don't change selection
-					// instead switch between rotate and resize mode
-					rotate = !rotate;
+				// already selected, do nothing
+				have_dragged = false; // we haven't done anything
 			} else {
 				// select the part under the cursor
 				control.selected_parts.clear();
@@ -213,6 +207,26 @@ void SymbolSelectEditor::onLeftUp    (const Vector2D& pos, wxMouseEvent& ev) {
 	// selection has changed
 	updateBoundingBox();
 	control.signalSelectionChange();
+	control.Refresh(false);
+}
+
+void SymbolSelectEditor::onLeftUp    (const Vector2D& pos, wxMouseEvent& ev) {
+	if (isEditing()) {
+		// stop editing
+		resetActions();
+	} else {
+		// mouse not moved -> change selection
+		if (!have_dragged && !ev.ShiftDown()) {
+			int dx, dy;
+			if (onAnyHandle(pos, &dx, &dy)) return; // don't change the selection
+			// Find the part under the cursor
+			SymbolPartP part = findPart(pos);
+			if (control.selected_parts.find(part) != control.selected_parts.end()) {
+				// already selected, don't change selection
+				// instead switch between rotate and resize mode
+				rotate = !rotate;
+			}
+		}
 	}
 	control.Refresh(false);
 }
@@ -261,7 +275,12 @@ void SymbolSelectEditor::onMouseMove  (const Vector2D& from, const Vector2D& to,
 	control.Refresh(false);
 }
 
+template <typename Event> int snap(Event& ev) {
+	return settings.symbol_grid_snap != ev.ShiftDown() ? settings.symbol_grid_size : 0; // shift toggles snap
+}
+
 void SymbolSelectEditor::onMouseDrag  (const Vector2D& from, const Vector2D& to, wxMouseEvent& ev) {
+	have_dragged = true;
 	if (control.selected_parts.empty()) return;
 	if (!isEditing()) {
 		// we don't have an action yet, determine what to do
@@ -294,6 +313,7 @@ void SymbolSelectEditor::onMouseDrag  (const Vector2D& from, const Vector2D& to,
 	if (moveAction) {
 		// move the selected parts
 		moveAction->constrain =	ev.ControlDown();
+		moveAction->snap      = snap(ev);
 		moveAction->move(to - from);
 	} else if (scaleAction) {
 		// scale the selected parts
@@ -303,7 +323,9 @@ void SymbolSelectEditor::onMouseDrag  (const Vector2D& from, const Vector2D& to,
 		if (scaleX ==  1) dMax.x = delta.x;
 		if (scaleY == -1) dMin.y = delta.y;
 		if (scaleY ==  1) dMax.y = delta.y;
-		scaleAction->constrain = ev.ControlDown();
+//		scaleAction->constrain = ev.ControlDown();
+		scaleAction->constrain = true; // always constrain diagonal scaling
+		scaleAction->snap      = snap(ev);
 		scaleAction->move(dMin,	dMax);
 	} else if (rotateAction) {
 		// rotate the selected parts
@@ -315,7 +337,8 @@ void SymbolSelectEditor::onMouseDrag  (const Vector2D& from, const Vector2D& to,
 		Vector2D delta = to-from;
 		delta = delta.mul(Vector2D(scaleY, scaleX));
 		delta = delta.div(maxV - minV);
-		shearAction->constrain = ev.ControlDown();
+//		shearAction->constrain = ev.ControlDown();
+		shearAction->snap      = snap(ev);
 		shearAction->move(delta);
 	}
 	control.Refresh(false);
@@ -324,21 +347,28 @@ void SymbolSelectEditor::onMouseDrag  (const Vector2D& from, const Vector2D& to,
 // ----------------------------------------------------------------------------- : Key Events
 
 void SymbolSelectEditor::onKeyChange (wxKeyEvent& ev) {
-	if (ev.GetKeyCode() == WXK_CONTROL) {
+	if (ev.GetKeyCode() == WXK_CONTROL || ev.GetKeyCode() == WXK_SHIFT) {
 		// changed constrains
 		if (moveAction) {
 			moveAction->constrain = ev.ControlDown();
+			moveAction->snap      = snap(ev);
 			moveAction->move(Vector2D()); // apply constrains
 			control.Refresh(false);
 		} else if (scaleAction) {
 			// only allow constrained scaling in diagonal direction
-			scaleAction->constrain = ev.ControlDown();
+//			scaleAction->constrain = ev.ControlDown();
+			scaleAction->constrain = true; // always constrain diagonal scaling
+			scaleAction->snap      = snap(ev);
 			scaleAction->update(); // apply constrains
 			control.Refresh(false);
 		} else if (rotateAction) {
 			rotateAction->constrain = ev.ControlDown();
 			rotateAction->rotateBy(0); // apply constrains
 			control.Refresh(false);
+		} else if (shearAction) {
+			shearAction->snap      = snap(ev);
+			shearAction->move(Vector2D()); // apply constrains
+			control.Refresh(false);
 		}
 	}
 }
@@ -408,7 +438,7 @@ void SymbolSelectEditor::updateBoundingBox() {
 		minV = piecewise_min(minV, p->min_pos);
 		maxV = piecewise_max(maxV, p->max_pos);
 	}
-	// Find rotation center
+/*	// Find rotation center
 	center = Vector2D(0,0);
 	FOR_EACH(p, control.selected_parts) {
 		Vector2D size = p->max_pos - p->min_pos;
@@ -416,6 +446,8 @@ void SymbolSelectEditor::updateBoundingBox() {
 		center += p->min_pos + size;
 	}
 	center /= control.selected_parts.size();
+*/
+	center = (minV + maxV) / 2;
 }
 
 void SymbolSelectEditor::resetActions() {

src/gui/symbol/select_editor.hpp

@@ -78,6 +78,8 @@ class SymbolSelectEditor : public SymbolEditorBase {
 	double startAngle;
 	// what side are we dragging/rotating on?
 	int scaleX, scaleY;
+	// have we dragged?
+	bool have_dragged;
 	// Do we want to rotate?
 	bool rotate;
 	// Graphics assets

src/gui/symbol/window.cpp

@@ -96,6 +96,9 @@ void SymbolWindow::init(Window* parent, SymbolP symbol) {
 	tb->AddSeparator();
 	tb->AddTool(ID_EDIT_UNDO,	_("Undo"),			load_resource_tool_image(_("undo")),		wxNullBitmap, wxITEM_NORMAL, _TOOL_1_("undo",wxEmptyString));
 	tb->AddTool(ID_EDIT_REDO,	_("Redo"),			load_resource_tool_image(_("redo")),		wxNullBitmap, wxITEM_NORMAL, _TOOL_1_("redo",wxEmptyString));
+	tb->AddSeparator();
+	tb->AddTool(ID_VIEW_GRID,	_("Grid"),			load_resource_tool_image(_("grid")),		wxNullBitmap, wxITEM_CHECK,  _TOOL_("grid"));
+	tb->AddTool(ID_VIEW_GRID_SNAP,_("Snap"),		load_resource_tool_image(_("grid_snap")),	wxNullBitmap, wxITEM_CHECK,  _TOOL_("snap"));
 	tb->Realize();
 	
 	// Edit mode toolbar

src/gui/util.cpp

@@ -122,7 +122,7 @@ wxIcon load_resource_icon(const String& name) {
 
 wxBitmap load_resource_tool_image(const String& name) {
 	#if defined(__WXMSW__)
-		return wxBitmap(_("tool/") + name);
+		return load_resource_image(_("tool/") + name);
 	#else
 		return load_resource_image(_("tool/") + name);
 	#endif

src/gui/util.hpp

@@ -46,8 +46,6 @@ wxCursor load_resource_cursor(const String& name);
 wxIcon load_resource_icon(const String& name);
 
 /// Load an image for use in a toolbar (filename: tool/...) from a resource
-/** Note: should ONLY be used for ".bmp" images for now
- */
 wxBitmap load_resource_tool_image(const String& name);
 
 // ----------------------------------------------------------------------------- : Platform look

src/render/symbol/viewer.cpp

@@ -127,7 +127,7 @@ void SymbolViewer::highlightPart(DC& dc, const SymbolPart& part, HighlightStyle
 		dc.DrawPolygon((int)points.size(), &points[0]);
 		if (part.combine == PART_SUBTRACT || part.combine == PART_BORDER) {
 			dc.SetLogicalFunction(wxAND);
-			dc.SetBrush(Color(192,192,255));
+			dc.SetBrush(Color(191,191,255));
 			dc.DrawPolygon((int)points.size(), &points[0]);
 		}
 		dc.SetLogicalFunction(wxCOPY);

src/resource/msw/mse.rc

@@ -19,36 +19,36 @@ icon/symbol				ICON	"icon/symbol.ico"
 
 cursor/rot_text			CURSOR	"cursor/rot_text.cur"
 
-tool/new				BITMAP	"tool/new.bmp"
-tool/open				BITMAP	"tool/open.bmp"
-tool/save				BITMAP	"tool/save.bmp"
-
-tool/undo				BITMAP	"tool/undo.bmp"
-tool/redo				BITMAP	"tool/redo.bmp"
-tool/cut				BITMAP	"tool/cut.bmp"
-tool/copy				BITMAP	"tool/copy.bmp"
-tool/paste				BITMAP	"tool/paste.bmp"
-tool/find				BITMAP	"tool/find.bmp"
-
-tool/bold				BITMAP	"tool/bold.bmp"
-tool/italic				BITMAP	"tool/italic.bmp"
-tool/symbol				BITMAP	"tool/symbol.bmp"
-tool/reminder			BITMAP	"tool/reminder.bmp"
-tool/no_auto			BITMAP	"tool/no_auto.bmp"
-
-tool/card_add			BITMAP	"tool/card_add.bmp"
-tool/card_add_multiple	BITMAP	"tool/card_add_multiple.bmp"
-tool/card_del			BITMAP	"tool/card_del.bmp"
-tool/card_rotate		BITMAP	"tool/card_rotate.bmp"
-tool/card_rotate_0		BITMAP	"tool/card_rotate_0.bmp"
-tool/card_rotate_90		BITMAP	"tool/card_rotate_90.bmp"
-tool/card_rotate_180	BITMAP	"tool/card_rotate_180.bmp"
-tool/card_rotate_270	BITMAP	"tool/card_rotate_270.bmp"
-
-tool/keyword_add		BITMAP	"tool/keyword_add.bmp"
-tool/keyword_del		BITMAP	"tool/keyword_del.bmp"
-
-tool/help				BITMAP	"tool/help.bmp"
+tool/new				IMAGE	"tool/new.png"
+tool/open				IMAGE	"tool/open.png"
+tool/save				IMAGE	"tool/save.png"
+
+tool/undo				IMAGE	"tool/undo.png"
+tool/redo				IMAGE	"tool/redo.png"
+tool/cut				IMAGE	"tool/cut.png"
+tool/copy				IMAGE	"tool/copy.png"
+tool/paste				IMAGE	"tool/paste.png"
+tool/find				IMAGE	"tool/find.png"
+
+tool/bold				IMAGE	"tool/bold.png"
+tool/italic				IMAGE	"tool/italic.png"
+tool/symbol				IMAGE	"tool/symbol.png"
+tool/reminder			IMAGE	"tool/reminder.png"
+tool/no_auto			IMAGE	"tool/no_auto.png"
+
+tool/card_add			IMAGE	"tool/card_add.png"
+tool/card_add_multiple	IMAGE	"tool/card_add_multiple.png"
+tool/card_del			IMAGE	"tool/card_del.png"
+tool/card_rotate		IMAGE	"tool/card_rotate.png"
+tool/card_rotate_0		IMAGE	"tool/card_rotate_0.png"
+tool/card_rotate_90		IMAGE	"tool/card_rotate_90.png"
+tool/card_rotate_180	IMAGE	"tool/card_rotate_180.png"
+tool/card_rotate_270	IMAGE	"tool/card_rotate_270.png"
+
+tool/keyword_add		IMAGE	"tool/keyword_add.png"
+tool/keyword_del		IMAGE	"tool/keyword_del.png"
+
+tool/help				IMAGE	"tool/help.png"
 
 // -------------------------------------------------------- : Symbol editor
 
@@ -60,23 +60,25 @@ cursor/rotate			CURSOR	"cursor/rotate.cur"
 cursor/shear_x			CURSOR	"cursor/shear_x.cur"
 cursor/shear_y			CURSOR	"cursor/shear_y.cur"
 
-tool/line				BITMAP	"tool/line.bmp"
-tool/curve				BITMAP	"tool/curve.bmp"
-tool/lock_free			BITMAP	"tool/lock_free.bmp"
-tool/lock_dir			BITMAP	"tool/lock_dir.bmp"
-tool/lock_size			BITMAP	"tool/lock_size.bmp"
-
-tool/circle				BITMAP	"tool/circle.bmp"
-tool/rectangle			BITMAP	"tool/rectangle.bmp"
-tool/triangle			BITMAP	"tool/triangle.bmp"
-tool/star				BITMAP	"tool/star.bmp"
-
-tool/mode_select		BITMAP	"tool/mode_select.bmp"
-tool/mode_rotate		BITMAP	"tool/mode_rotate.bmp"
-tool/mode_curve			BITMAP	"tool/mode_curve.bmp"
-tool/mode_paint			BITMAP	"tool/mode_paint.bmp"
-tool/apply				BITMAP	"tool/apply.bmp"
-tool/duplicate			BITMAP	"tool/duplicate.bmp"
+tool/line				IMAGE	"tool/line.png"
+tool/curve				IMAGE	"tool/curve.png"
+tool/lock_free			IMAGE	"tool/lock_free.png"
+tool/lock_dir			IMAGE	"tool/lock_dir.png"
+tool/lock_size			IMAGE	"tool/lock_size.png"
+
+tool/circle				IMAGE	"tool/circle.png"
+tool/rectangle			IMAGE	"tool/rectangle.png"
+tool/triangle			IMAGE	"tool/triangle.png"
+tool/star				IMAGE	"tool/star.png"
+
+tool/mode_select		IMAGE	"tool/mode_select.png"
+tool/mode_rotate		IMAGE	"tool/mode_rotate.png"
+tool/mode_curve			IMAGE	"tool/mode_curve.png"
+tool/mode_paint			IMAGE	"tool/mode_paint.png"
+tool/apply				IMAGE	"tool/apply.png"
+tool/duplicate			IMAGE	"tool/duplicate.png"
+tool/grid				IMAGE	"tool/grid.png"
+tool/grid_snap			IMAGE	"tool/grid_snap.png"
 
 combine_or				IMAGE	"tool/combine_or.png"
 combine_sub				IMAGE	"tool/combine_sub.png"
@@ -93,19 +95,19 @@ handle_center			IMAGE	"../common/handle_center.png"
 
 // -------------------------------------------------------- : Other
 
-sort_asc				IMAGE	"other/sort_asc.bmp"
-sort_desc				IMAGE	"other/sort_desc.bmp"
-plus					IMAGE	"other/plus.bmp"
-minus					IMAGE	"other/minus.bmp"
+sort_asc				IMAGE	"other/sort_asc.png"
+sort_desc				IMAGE	"other/sort_desc.png"
+plus					IMAGE	"other/plus.png"
+minus					IMAGE	"other/minus.png"
 selected				IMAGE	"other/selected_yes.png"
 deselected				IMAGE	"other/selected_no.png"
 
 bool_yes				IMAGE	"../common/bool_yes.png"
 bool_no					IMAGE	"../common/bool_no.png"
 
-//help_book				BITMAP	"help_book.bmp"
-//help_book_open			BITMAP	"help_book_open.bmp"
-//help_page				BITMAP	"help_page.bmp"
+//help_book				BITMAP	"help_book.png"
+//help_book_open			BITMAP	"help_book_open.png"
+//help_page				BITMAP	"help_page.png"
 
 about					IMAGE	"../common/about.png"
 two						IMAGE	"../common/two_beta.png"