finished symbol rendering

src/render/symbol/filter.cpp

@@ -7,6 +7,7 @@
 // ----------------------------------------------------------------------------- : Includes
 
 #include <render/symbol/filter.hpp>
+#include <render/symbol/viewer.hpp>
 #include <gfx/gfx.hpp>
 #include <util/error.hpp>
 
@@ -37,6 +38,12 @@ void filter_symbol(Image& symbol, const SymbolFilter& filter) {
 	}
 }
 
+Image render_symbol(const SymbolP& symbol, const SymbolFilter& filter, double border_radius, int size) {
+	Image i = render_symbol(symbol, border_radius, size);
+	filter_symbol(i, filter);
+	return i;
+}
+
 // ----------------------------------------------------------------------------- : SymbolFilter
 
 IMPLEMENT_REFLECTION(SymbolFilter) {

src/render/symbol/filter.hpp

@@ -12,6 +12,7 @@
 #include <util/prec.hpp>
 #include <util/reflect.hpp>
 
+DECLARE_POINTER_TYPE(Symbol);
 class SymbolFilter;
 
 // ----------------------------------------------------------------------------- : Color
@@ -32,6 +33,9 @@ class AColor : public Color {
  */
 void filter_symbol(Image& symbol, const SymbolFilter& filter);
 
+/// Render a Symbol to an Image and filter it
+Image render_symbol(const SymbolP& symbol, const SymbolFilter& filter, double border_radius = 0.05, int size = 100);
+
 /// Is a point inside a symbol?
 enum SymbolSet
 {	SYMBOL_INSIDE

src/render/symbol/viewer.cpp

@@ -11,6 +11,19 @@
 
 DECLARE_TYPEOF_COLLECTION(SymbolPartP);
 
+// ----------------------------------------------------------------------------- : Simple rendering
+
+Image render_symbol(const SymbolP& symbol, double border_radius, int size) {
+	SymbolViewer viewer(symbol, border_radius);
+	Bitmap bmp(size, size);
+	wxMemoryDC dc;
+	dc.SelectObject(bmp);
+	clearDC_black(dc);
+	viewer.draw(dc);
+	dc.SelectObject(wxNullBitmap);
+	return bmp.ConvertToImage();
+}
+
 // ----------------------------------------------------------------------------- : Constructor
 
 SymbolViewer::SymbolViewer(const SymbolP& symbol, double border_radius)

src/render/symbol/viewer.hpp

@@ -41,12 +41,13 @@ class SymbolViewer : public SymbolView {
 	
 	// --------------------------------------------------- : Drawing
 	
-  public:
 	/// Draw the symbol to a dc
 	void draw(DC& dc);
 	
 	void highlightPart(DC& dc, const SymbolPart& part, HighlightStyle style);
 	
+	void onAction(const Action&, bool) {}
+	
   private:
 	/// Combines a symbol part with what is currently drawn, the border and interior are drawn separatly
 	/** directB/directI are true if the border/interior is the screen dc, false if it

src/render/value/symbol.cpp

@@ -7,9 +7,51 @@
 // ----------------------------------------------------------------------------- : Includes
 
 #include <render/value/symbol.hpp>
+#include <render/symbol/filter.hpp>
+#include <data/set.hpp>
+#include <data/symbol.hpp>
+#include <gui/util.hpp> // draw_checker
+#include <util/error.hpp>
+
+DECLARE_TYPEOF_COLLECTION(SymbolStyle::VariationP);
 
 // ----------------------------------------------------------------------------- : SymbolValueViewer
 
 void SymbolValueViewer::draw(RotatedDC& dc) {
-	// TODO
+	drawFieldBorder(dc);
+	// draw checker background
+	draw_checker(dc, style().getRect());
+	double wh = min(style().width, style().height);
+	// try to load symbol
+	if (symbols.empty() && !value().filename.empty()) {
+		try {
+			// load symbol
+			SymbolP symbol = getSet().readFile<SymbolP>(value().filename);
+			// render and filter variations
+			FOR_EACH(variation, style().variations) {
+				Image img = render_symbol(symbol, *variation->filter, variation->border_radius);
+				Image resampled(wh, wh, false);
+				resample(img, resampled);
+				symbols.push_back(Bitmap(resampled));
+			}
+		} catch (const Error& e) {
+			handle_error(e);
+		}
+	}
+	// draw image, if any
+	for (size_t i = 0 ; i < symbols.size() ; ++i) {
+		// todo : labels?
+		dc.DrawBitmap(symbols[i], style().getPos() + RealSize(i * (wh + 2), 0));
+	}
+	// draw helper text if there are no symbols
+	if (symbols.empty()) {
+		dc.SetFont(wxFont(10,wxSWISS,wxNORMAL,wxNORMAL));
+		dc.SetTextForeground(*wxBLACK);
+		RealSize text_size = dc.GetTextExtent(_("double click to edit symbol"));
+		dc.DrawText(_("double click to edit symbol"), align_in_rect(ALIGN_MIDDLE_CENTER, text_size, style().getRect()));
+	}
+}
+
+void SymbolValueViewer::onValueChange() {
+	symbols.clear();
 }

src/render/value/symbol.hpp

@@ -21,6 +21,10 @@ class SymbolValueViewer : public ValueViewer {
 	DECLARE_VALUE_VIEWER(Symbol) : ValueViewer(parent,style) {}
 	
 	virtual void draw(RotatedDC& dc);
+	void onValueChange();
+	
+  private:
+	vector<Bitmap> symbols;	///< Cached images
 };
 
 // ----------------------------------------------------------------------------- : EOF

src/util/io/package.hpp

@@ -112,22 +112,30 @@ class Package {
 	/// Open a file given an absolute filename
 	static InputStreamP openAbsoluteFile(const String& name);
 	
-/*	// --------------------------------------------------- : Managing the inside of the package : IO files
+	// --------------------------------------------------- : Managing the inside of the package : Reader/writer
 	
 	template <typename T>
-	void readFile<T> (String n, T& obj) {
-		In i(openFileIn(n), filename + _("/") + n);
+	void readFile(const String& file, T& obj) {
+		Reader reader(openIn(file), absoluteFilename() + _("/") + file);
 		try {
-			i(obj);
-		} catch (ParseError e) {
-			throw FileParseError(e.what(), filename+_("/")+n); // more detailed message
+			reader.handle(obj);
+		} catch (const ParseError& err) {
+			throw FileParseError(err.what(), absoluteFilename() + _("/") + file); // more detailed message
 		}
 	}
+	template <typename T>
+	T readFile(const String& file) {
+		T obj;
+		readFile(file, obj);
+		return obj;
+	}
 	
 	template <typename T>
-	void writeFile(const String& file, T obj) {
+	void writeFile(const String& file, const T& obj) {
+		Writer writer(openOut(file));
+		writer.handle(obj);
 	}
-	*/
+	
 	// --------------------------------------------------- : Private stuff
   private: