Change State into a bitmask to allow more fine-grained control of styles

[libs/gltk.git] / source / widget.h

diff --git a/source/widget.h b/source/widget.h
index 255f0425bcc719f3161ccb32e8aaa3b75888d1e5..7fdc9066ec7d395c75fe437f97e049dad267730c 100644 (file)
--- a/source/widget.h
+++ b/source/widget.h
@@ -15,6 +15,7 @@ Distributed under the LGPL
 namespace Msp {
 namespace GLtk {
 
+class Panel;
 class Part;
 class Resources;
 class Style;
@@ -47,10 +48,11 @@ protected:
        const Style *style;
        State state;
        bool visible;
+       Panel *parent;
 
        Widget(const Resources &);
 public:
-       virtual ~Widget() { }
+       virtual ~Widget();
        void set_position(int, int);
        void set_size(unsigned, unsigned);
        void set_geometry(const Geometry &);
@@ -61,26 +63,28 @@ public:
        */
        void set_style(const std::string &);
 
+       void set_visible(bool);
+
        const Geometry &get_geometry() const { return geom; }
        bool is_visible() const { return visible; }
 
        void render() const;
 protected:
-       virtual void render_part(const Part &) const;
        void render_graphic(const Part &) const;
        void render_text(const Part &, const std::string &) const;
+       virtual void render_special(const Part &) const { }
 
 public:
        // Events
        virtual void button_press(int, int, unsigned) { }
        virtual void button_release(int, int, unsigned) { }
        virtual void pointer_motion(int, int) { }
-       virtual void pointer_enter() { }
-       virtual void pointer_leave() { }
+       virtual void pointer_enter();
+       virtual void pointer_leave();
        virtual void key_press(unsigned, unsigned, wchar_t) { }
        virtual void key_release(unsigned, unsigned) { }
-       virtual void focus_in() { }
-       virtual void focus_out() { }
+       virtual void focus_in();
+       virtual void focus_out();
 
 protected:
        /**
@@ -88,7 +92,27 @@ protected:
        */
        virtual const char *get_class() const { return "widget"; }
 
+       /**
+       Gets a style object from the resource collection based on the class and
+       style names of the widget.
+       */
        void update_style();
+
+       /**
+       Sets the widget's parent Panel.  The widget must be unparented when calling
+       this function with a nonzero parameter.
+       */
+       void set_parent(Panel *);
+
+       /**
+       A helper function to set the parent of another widget.
+       */
+       void set_parent(Widget &, Panel *);
+
+       // More events
+       virtual void on_geometry_change() { }
+       virtual void on_style_change() { }
+       virtual void on_reparent() { }
 };
 
 } // namespace GLtk