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// Copyright Michael Martin, 2004.
/*
* 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.
*/
#ifndef LIBS_GRAPHICS_WIDGETS_H_
#define LIBS_GRAPHICS_WIDGETS_H_
#include "libs/gfxlib.h"
enum {
WIDGET_EVENT_UP,
WIDGET_EVENT_DOWN,
WIDGET_EVENT_LEFT,
WIDGET_EVENT_RIGHT,
WIDGET_EVENT_SELECT,
WIDGET_EVENT_CANCEL,
WIDGET_EVENT_DELETE,
NUM_WIDGET_EVENTS
};
typedef enum {
WIDGET_TYPE_MENU_SCREEN,
WIDGET_TYPE_CHOICE,
WIDGET_TYPE_BUTTON,
WIDGET_TYPE_LABEL,
WIDGET_TYPE_SLIDER,
WIDGET_TYPE_TEXTENTRY,
WIDGET_TYPE_CONTROLENTRY,
NUM_WIDGET_TYPES
} WIDGET_TYPE;
#define WIDGET_TEXTENTRY_WIDTH 50
#define WIDGET_CONTROLENTRY_WIDTH 16
typedef struct _widget {
WIDGET_TYPE tag;
struct _widget *parent;
int (*handleEvent)(struct _widget *self, int event);
int (*receiveFocus)(struct _widget *self, int event);
void (*draw)(struct _widget *self, int x, int y);
int (*height)(struct _widget *self);
int (*width)(struct _widget *self);
} WIDGET;
typedef struct _widget_menu_screen {
WIDGET_TYPE tag;
struct _widget *parent;
int (*handleEvent)(struct _widget *self, int event);
int (*receiveFocus)(struct _widget *self, int event);
void (*draw)(struct _widget *self, int x, int y);
int (*height)(struct _widget *self);
int (*width)(struct _widget *self);
const char *title;
const char *subtitle;
STAMP bgStamp;
int num_children;
struct _widget **child;
int highlighted;
} WIDGET_MENU_SCREEN;
typedef struct {
const char *optname;
const char *tooltip[3];
} CHOICE_OPTION;
typedef struct _widget_choice {
WIDGET_TYPE tag;
struct _widget *parent;
int (*handleEvent)(struct _widget *self, int event);
int (*receiveFocus)(struct _widget *self, int event);
void (*draw)(struct _widget *self, int x, int y);
int (*height)(struct _widget *self);
int (*width)(struct _widget *self);
const char *category;
int numopts;
int maxcolumns;
CHOICE_OPTION *options;
int selected, highlighted;
void (*onChange)(struct _widget_choice *self, int oldval);
} WIDGET_CHOICE;
typedef struct _widget_button {
WIDGET_TYPE tag;
struct _widget *parent;
int (*handleEvent)(struct _widget *self, int event);
int (*receiveFocus)(struct _widget *self, int event);
void (*draw)(struct _widget *self, int x, int y);
int (*height)(struct _widget *self);
int (*width)(struct _widget *self);
const char *name;
const char *tooltip[3];
} WIDGET_BUTTON;
typedef struct _widget_label {
WIDGET_TYPE tag;
struct _widget *parent;
int (*handleEvent)(struct _widget *self, int event);
int (*receiveFocus)(struct _widget *self, int event);
void (*draw)(struct _widget *self, int x, int y);
int (*height)(struct _widget *self);
int (*width)(struct _widget *self);
int line_count;
const char **lines;
} WIDGET_LABEL;
typedef struct _widget_slider {
WIDGET_TYPE tag;
struct _widget *parent;
int (*handleEvent)(struct _widget *self, int event);
int (*receiveFocus)(struct _widget *self, int event);
void (*draw)(struct _widget *self, int x, int y);
int (*height)(struct _widget *self);
int (*width)(struct _widget *self);
void (*draw_value)(struct _widget_slider *self, int x, int y);
int min, max, step;
int value;
const char *category;
const char *tooltip[3];
} WIDGET_SLIDER;
typedef enum {
WTE_NORMAL = 0,
WTE_EDITING,
WTE_BLOCKCUR,
} WIDGET_TEXTENTRY_STATE;
typedef struct _widget_textentry {
WIDGET_TYPE tag;
struct _widget *parent;
int (*handleEvent)(struct _widget *self, int event);
int (*receiveFocus)(struct _widget *self, int event);
void (*draw)(struct _widget *self, int x, int y);
int (*height)(struct _widget *self);
int (*width)(struct _widget *self);
int (*handleEventSelect)(struct _widget_textentry *self);
// handleEventSelect is an overridable callback event
// called by the default handleEvent implementation
// can be NULL, in which case SELECT is ignored
void (*onChange)(struct _widget_textentry *self);
const char *category;
char value[WIDGET_TEXTENTRY_WIDTH];
int maxlen;
WIDGET_TEXTENTRY_STATE state;
int cursor_pos;
} WIDGET_TEXTENTRY;
typedef struct _widget_controlentry {
WIDGET_TYPE tag;
struct _widget *parent;
int (*handleEvent)(struct _widget *self, int event);
int (*receiveFocus)(struct _widget *self, int event);
void (*draw)(struct _widget *self, int x, int y);
int (*height)(struct _widget *self);
int (*width)(struct _widget *self);
void (*onChange)(struct _widget_controlentry *self);
void (*onDelete)(struct _widget_controlentry *self);
const char *category;
int controlindex;
int highlighted;
char controlname[2][WIDGET_CONTROLENTRY_WIDTH];
} WIDGET_CONTROLENTRY;
void DrawShadowedBox (RECT *r, Color bg, Color dark, Color medium);
void DrawLabelAsWindow (WIDGET_LABEL *label, RECT *windowRect);
void Widget_SetWindowColors (Color bg, Color dark, Color medium);
FONT Widget_SetFont (FONT newFont);
int Widget_Event (int event);
/* Methods for filling in widgets with */
int Widget_ReceiveFocusMenuScreen (WIDGET *_self, int event);
int Widget_ReceiveFocusChoice (WIDGET *_self, int event);
int Widget_ReceiveFocusSimple (WIDGET *_self, int event);
int Widget_ReceiveFocusSlider (WIDGET *_self, int event);
int Widget_ReceiveFocusControlEntry (WIDGET *_self, int event);
int Widget_ReceiveFocusRefuseFocus (WIDGET *_self, int event);
int Widget_HandleEventMenuScreen (WIDGET *_self, int event);
int Widget_HandleEventChoice (WIDGET *_self, int event);
int Widget_HandleEventSlider (WIDGET *_self, int event);
int Widget_HandleEventTextEntry (WIDGET *_self, int event);
int Widget_HandleEventControlEntry (WIDGET *_self, int event);
int Widget_HandleEventIgnoreAll (WIDGET *_self, int event);
int Widget_HeightChoice (WIDGET *_self);
int Widget_HeightFullScreen (WIDGET *_self);
int Widget_HeightOneLine (WIDGET *_self);
int Widget_HeightLabel (WIDGET *_self);
int Widget_WidthFullScreen (WIDGET *_self);
void Widget_DrawMenuScreen (WIDGET *_self, int x, int y);
void Widget_DrawChoice (WIDGET *_self, int x, int y);
void Widget_DrawButton (WIDGET *_self, int x, int y);
void Widget_DrawLabel (WIDGET *_self, int x, int y);
void Widget_DrawSlider (WIDGET *_self, int x, int y);
void Widget_DrawTextEntry (WIDGET *_self, int x, int y);
void Widget_DrawControlEntry (WIDGET *_self, int x, int y);
void Widget_Slider_DrawValue (WIDGET_SLIDER *self, int x, int y);
/* Other implementations will need these values */
extern WIDGET *widget_focus;
#endif /* LIBS_GRAPHICS_WIDGETS_H_ */
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