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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2004 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 GUI_WIDGET_H
#define GUI_WIDGET_H
#include "common/scummsys.h"
#include "common/str.h"
#include "gui/font.h"
#include "gui/object.h"
namespace GUI {
class Dialog;
enum {
WIDGET_ENABLED = 1 << 0,
WIDGET_INVISIBLE = 1 << 1,
WIDGET_HILITED = 1 << 2,
WIDGET_BORDER = 1 << 3,
WIDGET_INV_BORDER = 1 << 4,
WIDGET_CLEARBG = 1 << 5,
WIDGET_WANT_TICKLE = 1 << 7,
WIDGET_TRACK_MOUSE = 1 << 8,
WIDGET_RETAIN_FOCUS = 1 << 9 // 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',
kEditTextWidget = 'EDIT',
kButtonWidget = 'BTTN',
kCheckboxWidget = 'CHKB',
kSliderWidget = 'SLDE',
kListWidget = 'LIST',
kScrollBarWidget = 'SCRB',
kPopUpWidget = 'POPU',
kTabWidget = 'TABW'
};
enum {
kCaretBlinkTime = 300
};
enum {
kButtonWidth = 72,
kButtonHeight = 16
};
/* Widget */
class Widget : public GuiObject {
friend class Dialog;
protected:
uint32 _type;
GuiObject *_boss;
Widget *_next;
uint16 _id;
uint16 _flags;
bool _hasFocus;
public:
static Widget *findWidgetInChain(Widget *start, int x, int y);
public:
Widget(GuiObject *boss, int x, int y, int w, int h);
virtual ~Widget();
virtual int16 getAbsX() const { return _x + _boss->getChildX(); }
virtual int16 getAbsY() const { return _y + _boss->getChildY(); }
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 void handleMouseWheel(int x, int y, int direction) {}
virtual bool handleKeyDown(uint16 ascii, int keycode, int modifiers) { return false; } // Return true if the event was handled
virtual bool handleKeyUp(uint16 ascii, int keycode, 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; }
void setEnabled(bool e) { if (e) setFlags(WIDGET_ENABLED); else clearFlags(WIDGET_ENABLED); }
bool isEnabled() const { return _flags & WIDGET_ENABLED; }
bool isVisible() const { return !(_flags & WIDGET_INVISIBLE); }
protected:
virtual void drawWidget(bool hilite) {}
virtual void receivedFocusWidget() {}
virtual void lostFocusWidget() {}
virtual Widget *findWidget(int x, int y) { return this; }
void releaseFocus() { assert(_boss); _boss->releaseFocus(); }
// By default, delegate unhandled commands to the boss
void handleCommand(CommandSender *sender, uint32 cmd, uint32 data) { assert(_boss); _boss->handleCommand(sender, cmd, data); }
};
/* StaticTextWidget */
class StaticTextWidget : public Widget {
protected:
typedef Common::String String;
String _label;
TextAlignment _align;
public:
StaticTextWidget(GuiObject *boss, int x, int y, int w, int h, const String &text, TextAlignment align);
void setValue(int value);
void setLabel(const String &label) { _label = label; }
const String &getLabel() const { return _label; }
void setAlign(TextAlignment align) { _align = align; }
TextAlignment 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(GuiObject *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(); }
protected:
void drawWidget(bool hilite);
};
/* CheckboxWidget */
class CheckboxWidget : public ButtonWidget {
protected:
bool _state;
public:
CheckboxWidget(GuiObject *boss, int x, int y, int w, int h, const String &label, uint32 cmd = 0, uint8 hotkey = 0);
void handleMouseUp(int x, int y, int button, int clickCount);
virtual void handleMouseEntered(int button) {}
virtual void handleMouseLeft(int button) {}
void setState(bool state);
void toggleState() { setState(!_state); }
bool getState() const { return _state; }
protected:
void drawWidget(bool hilite);
};
/* SliderWidget */
class SliderWidget : public ButtonWidget {
protected:
int _value, _oldValue;
int _valueMin, _valueMax;
bool _isDragging;
uint _labelWidth;
public:
SliderWidget(GuiObject *boss, int x, int y, int w, int h, const String &label = String::emptyString, uint labelWidth = 0, 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);
};
} // End of namespace GUI
#endif
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