X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flayout.h;h=8b1c527640e4e29e69bd61c3f9fab4a4188044be;hb=9f38197854e699a6093a906ab43f4238f3cd2388;hp=2de4013a5d1e8b943cf939abd5b63b114e5fd1e3;hpb=b30edd979e6e9c7acfaaf3a90903814a7e62a71e;p=libs%2Fgltk.git

diff --git a/source/layout.h b/source/layout.h
index 2de4013..8b1c527 100644
--- a/source/layout.h
+++ b/source/layout.h
@@ -6,6 +6,7 @@
 #include <sigc++/trackable.h>
 #include <msp/strings/lexicalcast.h>
 #include "geometry.h"
+#include "mspgltk_api.h"
 
 namespace Msp {
 namespace GLtk {
@@ -50,7 +51,7 @@ Since specifiyng constraints manually can be quite tedious, an Arrangement
 interface is provided to automatically arrange widgets.  See classes Row,
 Column and Grid for some commonly used arrangements.
 */
-class Layout
+class MSPGLTK_API Layout
 {
 private:
 	enum
@@ -63,8 +64,9 @@ private:
 		TARGET_POS = 8,
 		TARGET_DIM = 16,
 		TARGET_MASK = 24,
-		SPACING = 32,
-		SLACK = 64
+		HALF_DIM = 32,
+		SPACING = 64,
+		SLACK = 128
 	};
 
 public:
@@ -79,43 +81,81 @@ public:
 		FAR_RIGHT_OF = HORIZONTAL|SELF_POS|TARGET_POS|TARGET_DIM|SPACING|SLACK,
 		FAR_LEFT_OF = HORIZONTAL|SELF_POS|SELF_DIM|TARGET_POS|SPACING|SLACK,
 		ALIGN_TOP = VERTICAL|SELF_POS|SELF_DIM|TARGET_POS|TARGET_DIM,
+		ALIGN_VCENTER = VERTICAL|SELF_POS|SELF_DIM|TARGET_POS|TARGET_DIM|HALF_DIM,
 		ALIGN_BOTTOM = VERTICAL|SELF_POS|TARGET_POS,
 		ALIGN_RIGHT = HORIZONTAL|SELF_POS|SELF_DIM|TARGET_POS|TARGET_DIM,
+		ALIGN_HCENTER = HORIZONTAL|SELF_POS|SELF_DIM|TARGET_POS|TARGET_DIM|HALF_DIM,
 		ALIGN_LEFT = HORIZONTAL|SELF_POS|TARGET_POS,
 		COPY_WIDTH = HORIZONTAL|SELF_DIM|TARGET_DIM,
 		COPY_HEIGHT = VERTICAL|SELF_DIM|TARGET_DIM
 	};
 
+	class Loader: public DataFile::ObjectLoader<Layout>
+	{
+	public:
+		typedef std::map<std::string, Widget *> WidgetMap;
+
+	private:
+		const WidgetMap &wdg_map;
+
+	public:
+		Loader(Layout &, const WidgetMap &);
+
+	private:
+		void column_spacing(unsigned);
+		void margin();
+		void row_spacing(unsigned);
+		void spacing(unsigned);
+		void widget(const std::string &);
+	};
+
 private:
+	class WidgetLoader: public DataFile::Loader
+	{
+	private:
+		Layout &layout;
+		Widget &widget;
+		const Layout::Loader::WidgetMap &wdg_map;
+
+	public:
+		WidgetLoader(Layout &, Widget &, const Layout::Loader::WidgetMap &);
+
+	private:
+		void constraint(ConstraintType, const std::string &);
+		void expand(bool, bool);
+		void ghost(bool);
+		void gravity(int, int);
+	};
+
 	struct Slot;
 
 	struct Constraint
 	{
 		ConstraintType type;
 		Slot &target;
-		int spacing;
+		int spacing = -1;
 
 		Constraint(ConstraintType, Slot &);
 	};
 
 	struct Packing
 	{
-		int gravity;
-		bool expand;
-
-		Packing();
+		int gravity = -1;
+		bool expand = false;
 	};
 
 	struct Slot: public sigc::trackable
 	{
 		Layout &layout;
-		int index;
+		int index = 0;
 		Widget &widget;
 		Geometry autosize_geom;
 		Geometry geom;
 		std::list<Constraint> constraints;
 		Packing horiz_pack;
 		Packing vert_pack;
+		bool ghost = false;
+		bool floating = false;
 
 		Slot(Layout &, Widget &);
 
@@ -132,26 +172,26 @@ private:
 	class LinearProgram;
 	struct Pointers;
 
-	Container *container;
+	Container *container = 0;
 	std::list<Slot *> slots;
-	unsigned n_active_slots;
-	unsigned n_slack_constraints[2];
-	Sides margin;
-	unsigned row_spacing;
-	unsigned col_spacing;
+	unsigned n_active_slots = 0;
+	unsigned n_slack_vars[2] = { 0, 0 };
+	Sides margin{ 8 };
+	unsigned row_spacing = 5;
+	unsigned col_spacing = 4;
 	Geometry autosize_geom;
 	std::list<Arrangement *> arrangement_stack;
 
 	static Pointers pointers[2];
 
 public:
-	Layout();
 	~Layout();
 
 	void set_container(Container &);
 	void set_margin(const Sides &);
+	const Sides &get_margin() const { return margin; }
 
-	/** Sets the default spacing between widgets in bothg directions. */
+	/** Sets the default spacing between widgets in both directions. */
 	void set_spacing(unsigned);
 
 	/** Sets the default vertical spacing between widgets.  Affects the ABOVE
@@ -162,6 +202,9 @@ public:
 	LEFT_OF and RIGHT_OF constraints. */
 	void set_column_spacing(unsigned);
 
+	unsigned get_row_spacing() const { return row_spacing; }
+	unsigned get_column_spacing() const { return col_spacing; }
+
 	void push_arrangement(Arrangement &);
 	Arrangement *get_arrangement() const;
 	void pop_arrangement(Arrangement &);
@@ -185,14 +228,19 @@ public:
 	void set_gravity(Widget &, int, int);
 	void set_expand(Widget &, bool, bool);
 
+	/// Sets a widget as a ghost, taking up space even if it is hidden.
+	void set_ghost(Widget &, bool);
+
+	void set_floating(Widget &, bool);
+
 	void update();
-	void autosize();
+	void autosize(Geometry &);
 
 private:
 	void solve_constraints(int, SolveMode);
 };
 
-void operator>>(const LexicalConverter &, Layout::ConstraintType &);
+MSPGLTK_API void operator>>(const LexicalConverter &, Layout::ConstraintType &);
 
 } // namespace GLtk
 } // namespace Msp