aboutsummaryrefslogtreecommitdiff
path: root/gui/widget.h
blob: 3a544da61d0bc14c398807314f2dae5886c42dde (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
/* ScummVM - Scumm Interpreter
 * Copyright (C) 2002 The ScummVM project
 *
 * 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 2
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header$
 */

#ifndef WIDGET_H
#define WIDGET_H

#include "scummsys.h"
#include "common/str.h"

class Dialog;

enum {
	WIDGET_ENABLED		= 1 << 0,
	WIDGET_INVISIBLE	= 1 << 1,
	WIDGET_HILITED		= 1 << 2,
	WIDGET_BORDER		= 1 << 3,
	WIDGET_CLEARBG		= 1 << 4,
	WIDGET_WANT_TICKLE	= 1 << 5,
	WIDGET_TRACK_MOUSE	= 1 << 6,
	WIDGET_RETAIN_FOCUS	= 1 << 7		// Retain focus on mouse up. By default widgets lose focus on mouseup, but some widgets might want to retain it - widgets where you enter text, for instance

};

enum {
	kStaticTextWidget	= 'TEXT',
	kButtonWidget		= 'BTTN',
	kCheckboxWidget		= 'CHKB',
	kSliderWidget		= 'SLDE',
	kListWidget			= 'LIST',
	kScrollBarWidget	= 'SCRB'
};

class CommandReceiver;
class CommandSender;

class CommandReceiver
{
friend class CommandSender;
protected:
	virtual void handleCommand(CommandSender *sender, uint32 cmd, uint32 data) = 0;
};

class CommandSender
{
protected:
	CommandReceiver	*_target;
public:
	CommandSender(CommandReceiver *target) : _target(target) {}

	void setTarget(CommandReceiver *target)	{ _target = target; }
	CommandReceiver *getTarget() const		{ return _target; }

	virtual void sendCommand(uint32 cmd, uint32 data)
	{
		if (_target && cmd)
			_target->handleCommand(this, cmd, data);
	}
};

/* Widget */
class Widget {
friend class Dialog;
protected:
	uint32		_type;
	Dialog		*_boss;
	Widget		*_next;
	int16		_x, _y;
	uint16		_w, _h;
	uint16		_id;
	uint16		_flags;
	bool		_hasFocus;

public:
	Widget(Dialog *boss, int x, int y, int w, int h);
	virtual ~Widget() {}

	virtual void handleMouseDown(int x, int y, int button, int clickCount) {}
	virtual void handleMouseUp(int x, int y, int button, int clickCount) {}
	virtual void handleMouseEntered(int button) {}
	virtual void handleMouseLeft(int button) {}
	virtual void handleMouseMoved(int x, int y, int button) {}
	virtual bool handleKeyDown(char key, int modifiers) { return false; }	// Return true if the event was handled
	virtual bool handleKeyUp(char key, int modifiers) { return false; }	// Return true if the event was handled
	virtual void handleTickle() {}
	void draw();
	void receivedFocus() { _hasFocus = true; receivedFocusWidget(); }
	void lostFocus() { _hasFocus = false; lostFocusWidget(); }
	virtual bool wantsFocus() { return false; };

	void setFlags(int flags)	{ _flags |= flags; }
	void clearFlags(int flags)	{ _flags &= ~flags; }
	int getFlags() const		{ return _flags; }
	
	bool isVisible() const	{ return !(_flags & WIDGET_INVISIBLE); }

protected:
	virtual void drawWidget(bool hilite) {}

	virtual void receivedFocusWidget() {}
	virtual void lostFocusWidget() {}
};


/* StaticTextWidget */
class StaticTextWidget : public Widget {
protected:
	typedef ScummVM::String String;

	String _label;
	int		_align;
public:
	StaticTextWidget(Dialog *boss, int x, int y, int w, int h, const String &text, int align);
	void setValue(int value);
	void setLabel(const String &label) { _label = label; }
	const String &getLabel() const     { return _label; }
	void setAlign(int align)           { _align = align; }
	int getAlign() const               { return _align; }

protected:
	void drawWidget(bool hilite);
};


/* ButtonWidget */
class ButtonWidget : public StaticTextWidget, public CommandSender {
	friend class Dialog;	// Needed for the hotkey handling
protected:
	uint32			_cmd;
	uint8			_hotkey;
public:
	ButtonWidget(Dialog *boss, int x, int y, int w, int h, const String &label, uint32 cmd = 0, uint8 hotkey = 0);

	void setCmd(uint32 cmd)					{ _cmd = cmd; }
	uint32 getCmd() const					{ return _cmd; }

	void handleMouseUp(int x, int y, int button, int clickCount);
	void handleMouseEntered(int button)	{ setFlags(WIDGET_HILITED); draw(); }
	void handleMouseLeft(int button)	{ clearFlags(WIDGET_HILITED); draw(); }
};

/* CheckboxWidget */
class CheckboxWidget : public ButtonWidget {
protected:
	bool	_state;
public:
	CheckboxWidget(Dialog *boss, int x, int y, int w, int h, const String &label, uint32 cmd = 0, uint8 hotkey = 0);
	void setState(bool state)	{ _state = state; }
	bool getState() const		{ return _state; }

	void handleMouseDown(int x, int y, int button, int clickCount);
	virtual void handleMouseEntered(int button)	{}
	virtual void handleMouseLeft(int button)	{}

protected:
	void drawWidget(bool hilite);
};

/* SliderWidget */
class SliderWidget : public ButtonWidget {
protected:
	int		_value, _oldValue;
	int		_valueMin, _valueMax;
	bool	_isDragging;
public:
	SliderWidget(Dialog *boss, int x, int y, int w, int h, const String &label, uint32 cmd = 0, uint8 hotkey = 0);
	void setValue(int value)	{ _value = value; }
	int getValue() const		{ return _value; }

	void setMinValue(int value)	{ _valueMin = value; }
	int getMinValue() const		{ return _valueMin; }
	void setMaxValue(int value)	{ _valueMax = value; }
	int getMaxValue() const		{ return _valueMax; }

	void handleMouseMoved(int x, int y, int button);
	void handleMouseDown(int x, int y, int button, int clickCount);
	void handleMouseUp(int x, int y, int button, int clickCount);

protected:
	void drawWidget(bool hilite);
	
	int valueToPos(int value);
	int posToValue(int pos);
};


#endif