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/*
* This file is part of NumptyPhysics
* Copyright (C) 2008 Tim Edmonds
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
*/
#ifndef UI_H
#define UI_H
#include "Common.h"
#include "Array.h"
#include "Event.h"
#include <string>
#include <SDL/SDL.h>
class Canvas;
class Widget;
class Font;
class WidgetParent;
class Widget
{
public:
virtual ~Widget() {}
virtual const char* name() {return "Widget";}
virtual std::string toString();
virtual void move( const Vec2& by );
virtual void moveTo( const Vec2& to ) {move(to-m_pos.tl);}
virtual void sizeTo( const Vec2& size );
virtual const Rect& position() const { return m_pos; }
virtual bool isDirty() {return m_dirty;}
virtual Rect dirtyArea() {return m_dirty?m_pos:Rect(false);};
virtual void onTick( int tick ) {}
virtual void draw( Canvas& screen, const Rect& area );
virtual bool processEvent( SDL_Event& ev );
bool dispatchEvent( Event& ev );
virtual void onResize() {}
virtual bool onEvent( Event& ev ) {return false;}
void setParent(WidgetParent* p) {m_parent = p;}
WidgetParent* parent() { return m_parent; }
WidgetParent* topLevel();
void setEventMap(EventMap* em) {m_eventMap = em;}
void setEventMap(EventMapType map);
virtual void dirty(bool dirt=true) { m_dirty=dirt; }
virtual void dirty( const Rect& r ) {}
Rect& position() { return m_pos; }
void setBg(int bg) {m_bg=bg;}
void setFg(int fg) {m_fg=fg;}
void fitToParent(bool fit) { m_fitToParent=fit;}
bool fitToParent() {return m_fitToParent;}
bool greedyMouse() {return m_greedyMouse;}
void transparent(bool t) {m_alpha=t?0:255;}
void alpha(int a) {m_alpha=a;}
void border(bool drawBorder) {m_border = drawBorder?1:0;}
protected:
Widget(WidgetParent *p=NULL);
WidgetParent* m_parent;
EventMap* m_eventMap;
Rect m_pos;
bool m_dirty;
bool m_focussed;
int m_alpha;
bool m_fitToParent;
bool m_greedyMouse;
int m_bg;
int m_fg;
int m_border;
};
class Spacer : public Widget {
const char* name() {return "Spacer";}
};
class Label : public Widget
{
public:
Label();
Label(const std::string& s, const Font* f=NULL);
const char* name() {return "Label";}
virtual void text( const std::string& s );
const std::string& text() const { return m_text; }
void align( int a );
virtual void draw( Canvas& screen, const Rect& area );
void font( const Font* f ) { m_font = f; }
protected:
std::string m_text;
const Font *m_font;
};
class Button : public Label
{
public:
Button(const std::string& s, Event event=Event::NOP);
const char* name() {return "Button";}
void event(Event ev) {m_selEvent = ev;}
void draw( Canvas& screen, const Rect& area );
virtual bool onEvent( Event& ev );
virtual void onSelect() {};
protected:
Event m_selEvent;
};
class Icon : public Label
{
public:
Icon( Canvas* c=NULL );
~Icon();
const char* name() {return "Icon";}
void canvas( Canvas* c );
void draw( Canvas& screen, const Rect& area );
protected:
Canvas *m_canvas;
};
class IconButton : public Button
{
public:
IconButton(const std::string& s, const std::string& icon, const Event& ev);
~IconButton();
const char* name() {return "IconButton";}
void canvas(Canvas *c, bool takeOwnership=true);
Canvas* canvas();
void icon(const std::string& icon);
void draw( Canvas& screen, const Rect& area );
void align(int dir) { m_vertical=(dir==0); }
protected:
bool m_vertical;
bool m_ownIcon;
Canvas *m_icon;
};
class RichText : public Label
{
public:
RichText(const std::string& s, const Font* f=NULL);
virtual void text( const std::string& s );
virtual void draw( Canvas& screen, const Rect& area );
int layout(int w);
protected:
struct Snippet {
Vec2 pos;
int textoff;
int textlen;
int align;
const Font* font;
};
Array<Snippet> m_snippets;
bool m_layoutRequired;
};
class WidgetParent : public Widget
{
public:
const char* name() {return "WidgetParent";}
virtual void add( Widget* w, int x=-9999, int y=-9999 )=0;
void add( Widget* w, const Vec2& pos ) {add(w,pos.x,pos.y);}
void add( Widget* w, const Rect& pos ) {w->sizeTo(pos.size());add(w,pos.tl.x,pos.tl.y);}
virtual void remove( Widget* w )=0;
};
class Container : public WidgetParent
{
public:
Container();
~Container();
const char* name() {return "Container";}
virtual std::string toString();
virtual void move( const Vec2& by );
virtual bool isDirty();
virtual Rect dirtyArea();
virtual void onTick( int tick );
virtual void draw( Canvas& screen, const Rect& area );
virtual bool processEvent( SDL_Event& ev );
virtual void onResize();
virtual void add( Widget* w, int x=-9999, int y=-9999 );
using WidgetParent::add;
virtual void remove( Widget* w );
virtual void empty();
protected:
Array<Widget*> m_children;
};
class Panel : public Container
{
const char* name() {return "Panel";}
};
class Box : public Panel
{
public:
Box(int spacing=0, bool vertical=false);
const char* name() {return "Box";}
virtual void onResize();
virtual void add( Widget* w, int wh, int grow );
virtual void remove( Widget* w );
protected:
Array<int> m_sizes;
Array<int> m_growths;
int m_spacing;
bool m_vertical;
};
class VBox : public Box
{
public:
VBox(int spacing=0) : Box(spacing,true) {}
const char* name() {return "VBox";}
};
class HBox : public Box
{
public:
HBox(int spacing=0) : Box(spacing,false) {}
const char* name() {return "HBox";}
};
class Draggable : public Panel
{
public:
Draggable();
const char* name() {return "Draggable";}
bool processEvent( SDL_Event& ev );
bool onPreEvent( Event& ev );
bool onEvent( Event& ev );
void onTick( int tick );
void step( const Vec2& s ) { m_step = s; }
protected:
bool m_dragMaybe;
bool m_dragging;
Vec2 m_dragOrg;
Vec2 m_step;
Vec2 m_delta;
bool m_internalEvent;
};
class ScrollArea : public Panel
{
public:
ScrollArea();
const char* name() {return "ScrollArea";}
bool onEvent( Event& ev );
virtual void onResize();
virtual void draw( Canvas& screen, const Rect& area );
virtual void add( Widget* w, int x=-9999, int y=-9999 );
using WidgetParent::add;
virtual void remove( Widget* w );
virtual void empty();
virtual void virtualSize( const Vec2& size );
protected:
Canvas* m_canvas;
Draggable* m_contents;
};
struct MenuItem
{
MenuItem(const std::string& s, Event ev=Event::NOP)
: text(s), event(ev) {}
std::string text;
Event event;
};
class Menu
{
public:
void addItems(const MenuItem* item);
void addItem(const MenuItem& item);
void addItem(const std::string& s, Event event=Event::NOP);
protected:
virtual void layout() =0;
Array<MenuItem*> m_items;
};
class TabBook : public Panel
{
public:
TabBook();
~TabBook();
const char* name() {return "TabBook";}
virtual void onResize();
virtual bool onEvent( Event& ev );
virtual void draw( Canvas& screen, const Rect& area );
virtual void addTab( const std::string &s, Widget* w );
void selectTab( int t );
private:
int m_count, m_selected;
Array<Widget*> m_tabs;
Array<Widget*> m_panels;
Widget* m_contents;
};
class Dialog : public Panel
{
public:
Dialog( const std::string &title="", Event left=Event::NOP, Event right=Event::NOP );
const char* name() {return "Dialog";}
void onTick( int tick );
bool processEvent( SDL_Event& ev );
bool onEvent( Event& ev );
bool close();
virtual Container* content() { return m_content; }
Button* leftControl() { return m_left; }
Button* rightControl() { return m_right; }
protected:
Label *m_title;
Button *m_left, *m_right;
Container *m_content;
Vec2 m_targetPos;
bool m_closeRequested;
};
class MenuDialog : public Dialog, public virtual Menu
{
public:
MenuDialog( Widget* evtarget, const std::string &title, const MenuItem* items=NULL );
const char* name() {return "MenuDialog";}
virtual bool onEvent( Event& ev );
protected:
virtual Widget* makeButton( MenuItem* item, const Event& ev );
virtual void layout();
Widget *m_target;
Box *m_box;
int m_columns;
Vec2 m_buttonDim;
};
class MessageBox : public Dialog
{
public:
MessageBox( const std::string& text );
};
class Layer : public Dialog
{
public:
const char* name() {return "Layer";}
virtual void onShow() {}
virtual void onHide() {}
};
#endif //UI_H
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