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/* 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
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