rt-thread/components/rtgui/widgets/textbox.c

686 lines
16 KiB
C

/*
* File : textbox.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2009-10-16 Bernard first version
* 2011-01-224 Bernard fix backspace issue.
* 2012-06-09 asml refactor
* 2012-06-17 Grissiom misc cleanup and merge
*/
#include <string.h>
#include <rtgui/widgets/textbox.h>
#include <rtgui/widgets/combobox.h>
#include <rtgui/rtgui_system.h>
#include <ctype.h>
static void rtgui_textbox_draw_caret(rtgui_textbox_t *box, rt_uint16_t position);
static rt_bool_t rtgui_textbox_onkey(struct rtgui_object *widget, rtgui_event_t *event);
static rt_bool_t rtgui_textbox_onfocus(struct rtgui_object *widget, rtgui_event_t *event);
static rt_bool_t rtgui_textbox_onunfocus(struct rtgui_object *widget, rtgui_event_t *event);
static void _rtgui_textbox_constructor(rtgui_textbox_t *box)
{
rtgui_rect_t rect;
RTGUI_WIDGET_FLAG(RTGUI_WIDGET(box)) |= RTGUI_WIDGET_FLAG_FOCUSABLE;
rtgui_object_set_event_handler(RTGUI_OBJECT(box), rtgui_textbox_event_handler);
rtgui_widget_set_onfocus(RTGUI_WIDGET(box), rtgui_textbox_onfocus);
rtgui_widget_set_onunfocus(RTGUI_WIDGET(box), rtgui_textbox_onunfocus);
#ifndef RTGUI_USING_SMALL_SIZE
rtgui_widget_set_onkey(RTGUI_WIDGET(box), rtgui_textbox_onkey);
#endif
RTGUI_WIDGET_FOREGROUND(box) = black;
RTGUI_WIDGET_BACKGROUND(box) = white;
/* set default text align */
RTGUI_WIDGET_TEXTALIGN(box) = RTGUI_ALIGN_CENTER_VERTICAL;
/* set proper of control */
box->caret_timer = RT_NULL;
box->caret = RT_NULL;
box->line = box->line_begin = box->position = 0;
box->flag = RTGUI_TEXTBOX_SINGLE;
/* allocate default line buffer */
box->text = RT_NULL;
rtgui_textbox_set_mask_char(box, '*');
rtgui_font_get_metrics(RTGUI_WIDGET_FONT(box), "H", &rect);
box->font_width = rtgui_rect_width(rect);
box->on_enter = RT_NULL;
box->dis_length = 0;
box->first_pos = 0;
}
static void _rtgui_textbox_deconstructor(rtgui_textbox_t *textbox)
{
if (textbox->text != RT_NULL)
{
rtgui_free(textbox->text);
textbox->text = RT_NULL;
}
if (textbox->caret_timer != RT_NULL)
{
rtgui_timer_destory(textbox->caret_timer);
textbox->caret_timer = RT_NULL;
}
if (textbox->caret != RT_NULL)
{
rtgui_free(textbox->caret);
textbox->caret = RT_NULL;
}
}
DEFINE_CLASS_TYPE(textbox, "textbox",
RTGUI_WIDGET_TYPE,
_rtgui_textbox_constructor,
_rtgui_textbox_deconstructor,
sizeof(struct rtgui_textbox));
static void rtgui_textbox_get_caret_rect(rtgui_textbox_t *box, rtgui_rect_t *rect, rt_uint16_t position)
{
int font_h, box_h;
rtgui_rect_t item_rect;
RT_ASSERT(box != RT_NULL);
rtgui_widget_get_rect(RTGUI_WIDGET(box), rect);
rtgui_font_get_metrics(RTGUI_WIDGET_FONT(box), "H", &item_rect);
font_h = rtgui_rect_height(item_rect);
box_h = rtgui_rect_height(*rect);
rect->x1 += position * box->font_width + 2;
rect->x2 = rect->x1 + 2;
rect->y1 += (box_h - font_h) / 2;
rect->y2 = rect->y1 + font_h;
}
static void rtgui_textbox_init_caret(rtgui_textbox_t *box, rt_uint16_t position)
{
int x, y;
rtgui_color_t color;
rtgui_rect_t rect;
int ofs = 0;
RT_ASSERT(box != RT_NULL);
if (!RTGUI_WIDGET_IS_FOCUSED(box))
return;
rtgui_textbox_get_caret_rect(box, &box->caret_rect, position);
rect = box->caret_rect;
rtgui_widget_rect_to_device(RTGUI_WIDGET(box), &rect);
if (box->caret == RT_NULL)
box->caret = rtgui_malloc(rtgui_rect_width(rect) * rtgui_rect_height(rect) * sizeof(rtgui_color_t));
for (x = rect.x1; x < rect.x2; x++)
{
for (y = rect.y1; y < rect.y2; y++)
{
rtgui_graphic_driver_get_default()->ops->get_pixel(&color, x, y);
*(box->caret + ofs) = color;
ofs++;
}
}
}
/* draw caret */
static void rtgui_textbox_draw_caret(rtgui_textbox_t *box, rt_uint16_t position)
{
int x, y;
rtgui_color_t color;
rtgui_rect_t rect;
int ofs = 0;
struct rtgui_dc *dc;
RT_ASSERT(box != RT_NULL);
if (box->caret == RT_NULL)
return;
dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(box));
if (dc == RT_NULL)
return;
rect = box->caret_rect;
for (x = rect.x1; x < rect.x2; x++)
{
for (y = rect.y1; y < rect.y2; y++)
{
color = *(box->caret + ofs);
ofs++;
if (box->flag & RTGUI_TEXTBOX_CARET_SHOW)
{
color = ~color;
}
rtgui_dc_draw_color_point(dc, x, y, color);
}
}
rtgui_dc_end_drawing(dc);
}
static void rtgui_textbox_timeout(rtgui_timer_t *timer, void *parameter)
{
rtgui_textbox_t *box;
box = RTGUI_TEXTBOX(parameter);
/* set caret flag */
if (box->flag & RTGUI_TEXTBOX_CARET_SHOW)
box->flag &= ~RTGUI_TEXTBOX_CARET_SHOW;
else
box->flag |= RTGUI_TEXTBOX_CARET_SHOW;
rtgui_textbox_draw_caret(box, box->position);
}
static void rtgui_textbox_onmouse(rtgui_textbox_t *box, struct rtgui_event_mouse *event)
{
rt_size_t length;
rt_uint16_t posbak = box->position;
RT_ASSERT(box != RT_NULL);
RT_ASSERT(event != RT_NULL);
length = rt_strlen(box->text);
if (event->button & RTGUI_MOUSE_BUTTON_LEFT && event->button & RTGUI_MOUSE_BUTTON_DOWN)
{
rt_int32_t x;
/* single line text */
/* set caret position */
x = event->x - RTGUI_WIDGET(box)->extent.x1;
if (x < 0)
{
box->position = 0;
}
else if (x > (length - box->first_pos) * box->font_width)
{
box->position = length - box->first_pos;
}
else
{
box->position = x / box->font_width;
}
if (box->flag & RTGUI_TEXTBOX_CARET_SHOW)
{
if (box->caret_timer != RT_NULL)
rtgui_timer_stop(box->caret_timer);
box->flag &= ~RTGUI_TEXTBOX_CARET_SHOW;
rtgui_textbox_draw_caret(box, posbak);
if (box->caret_timer != RT_NULL)
rtgui_timer_start(box->caret_timer);
}
rtgui_textbox_init_caret(box, box->position);
box->flag |= RTGUI_TEXTBOX_CARET_SHOW;
rtgui_textbox_draw_caret(box, box->position);
}
}
static rt_bool_t rtgui_textbox_onkey(struct rtgui_object *widget, rtgui_event_t *event)
{
rtgui_textbox_t *box = RTGUI_TEXTBOX(widget);
struct rtgui_event_kbd *ekbd = (struct rtgui_event_kbd *)event;
rt_size_t length;
rt_uint16_t posbak = box->position;
RT_ASSERT(box != RT_NULL);
RT_ASSERT(ekbd != RT_NULL);
/* handle the key at down time and nothing to do with up */
if (RTGUI_KBD_IS_UP(ekbd))
return RT_TRUE;
if (box->dis_length == 0)
{
rtgui_rect_t rect;
rtgui_widget_get_rect(RTGUI_WIDGET(box), &rect);
if (box->font_width == 0)
return RT_FALSE;
box->dis_length = (rtgui_rect_width(rect) - 5) / box->font_width;
}
length = rt_strlen(box->text);
if (ekbd->key == RTGUIK_DELETE)
{
/* delete latter character */
if (box->first_pos + box->position == length - 1)
{
box->text[box->first_pos + box->position] = '\0';
}
else
{
char *c;
/* remove character */
for (c = &box->text[box->first_pos + box->position]; c[1] != '\0'; c++)
*c = c[1];
*c = '\0';
}
}
else if (ekbd->key == RTGUIK_BACKSPACE)
{
/* delete front character */
if (box->position == 0)
{
if(box->first_pos > 0)
{
if(box->first_pos > box->dis_length)
{
box->first_pos -= box->dis_length;
box->position = box->dis_length;
}
else
{
box->position = box->first_pos;
box->first_pos = 0;
}
}
}
else if (box->position == length-box->first_pos)
{
box->text[box->first_pos + box->position - 1] = '\0';
box->position --;
}
else if (box->position != 0)
{
/* remove current character */
if (box->position != 0)
{
char *c;
/* remove character */
for (c = &box->text[box->position - 1]; c[1] != '\0'; c++)
*c = c[1];
*c = '\0';
}
box->position --;
}
}
else if (ekbd->key == RTGUIK_LEFT)
{
/* move to prev */
if (box->position > 0)
{
box->position --;
}
else
{
if(box->first_pos > 0)
box->first_pos -= 1;//DEBUG
}
}
else if (ekbd->key == RTGUIK_RIGHT)
{
/* move to next */
if (box->first_pos + box->position < length)
{
if(box->position < box->dis_length)
box->position ++;
else
box->first_pos += 1;//DEBUG
}
}
else if (ekbd->key == RTGUIK_HOME)
{
/* move cursor to start */
box->position = 0;
box->first_pos = 0;
}
else if (ekbd->key == RTGUIK_END)
{
/* move cursor to end */
if(length > box->dis_length)
{
box->position = box->dis_length;
box->first_pos = length - box->dis_length;
}
else
{
box->position = length;
box->first_pos = 0;
}
}
else if (ekbd->key == RTGUIK_RETURN)
{
if (box->on_enter != RT_NULL)
{
box->on_enter(box, event);
}
}
else if (ekbd->key == RTGUIK_NUMLOCK)
{
/* change numlock state */
/*
extern void update_number_lock(void);
update_number_lock();
*/
}
else
{
if (isprint(ekbd->key))
{
/* it's may print character */
/* no buffer on this line */
if (box->flag & RTGUI_TEXTBOX_DIGIT)
{
/* only input digit */
if (!isdigit(ekbd->key))
{
/* exception: '.' and '-' */
if (ekbd->key != '.' && ekbd->key != '-')return RT_FALSE;
if (ekbd->key == '.' && strchr(box->text, '.'))return RT_FALSE;
if (ekbd->key == '-')
{
if (length + 1 > box->line_length) return RT_FALSE;
if (strchr(box->text, '-'))
{
char *c;
for (c = &box->text[0]; c != &box->text[length]; c++)
*c = *(c + 1);
box->text[length] = '\0';
box->position --;
goto _exit;
}
else
{
char *c;
for (c = &box->text[length]; c != &box->text[0]; c--)
*c = *(c - 1);
box->text[0] = '-';
box->text[length + 1] = '\0';
box->position ++;
goto _exit;
}
}
}
}
if (length + 1 > box->line_length) return RT_FALSE;
if (box->first_pos + box->position <= length - 1)
{
char *c;
for (c = &box->text[length]; c != &box->text[box->first_pos + box->position]; c--)
*c = *(c - 1);
box->text[length + 1] = '\0';
}
box->text[box->first_pos + box->position] = ekbd->key;
if(box->position < box->dis_length)
box->position ++;
else
box->first_pos ++;
}
}
_exit:
if (box->flag & RTGUI_TEXTBOX_CARET_SHOW)
{
if (box->caret_timer != RT_NULL)
rtgui_timer_stop(box->caret_timer);
box->flag &= ~RTGUI_TEXTBOX_CARET_SHOW;
rtgui_textbox_draw_caret(box, posbak);/* refresh it */
if (box->caret_timer != RT_NULL)
rtgui_timer_start(box->caret_timer);
}
/* re-draw text box */
rtgui_textbox_ondraw(box);
rtgui_textbox_init_caret(box, box->position);
box->flag |= RTGUI_TEXTBOX_CARET_SHOW;
rtgui_textbox_draw_caret(box, box->position);
return RT_TRUE;
}
static rt_bool_t rtgui_textbox_onfocus(struct rtgui_object *widget, rtgui_event_t *event)
{
rtgui_textbox_t *box = RTGUI_TEXTBOX(widget);
/* if there is already a timer, don't create another one. */
if (box->caret_timer == RT_NULL)
{
box->caret_timer = rtgui_timer_create(50, RT_TIMER_FLAG_PERIODIC, rtgui_textbox_timeout, box);
/* set caret to show */
box->flag |= RTGUI_TEXTBOX_CARET_SHOW;
/* start caret timer */
if (box->caret_timer != RT_NULL)
rtgui_timer_start(box->caret_timer);
}
return RT_TRUE;
}
static rt_bool_t rtgui_textbox_onunfocus(struct rtgui_object *widget, rtgui_event_t *event)
{
rtgui_textbox_t *box = RTGUI_TEXTBOX(widget);
/* stop caret timer */
if (box->caret_timer != RT_NULL)
{
rtgui_timer_stop(box->caret_timer);
rtgui_timer_destory(box->caret_timer);
box->caret_timer = RT_NULL;
}
/* set caret to hide */
box->flag &= ~RTGUI_TEXTBOX_CARET_SHOW;
rtgui_textbox_draw_caret(box, box->position);
if (box->on_enter != RT_NULL)
box->on_enter(box, event);
return RT_TRUE;
}
rtgui_textbox_t *rtgui_textbox_create(const char *text, rt_uint32_t flag)
{
rtgui_textbox_t *box;
box = (struct rtgui_textbox *)rtgui_widget_create(RTGUI_TEXTBOX_TYPE);
if (box != RT_NULL)
{
/* allocate default line buffer */
rtgui_textbox_set_value(box, text);
box->flag = flag;
}
return box;
}
void rtgui_textbox_destroy(rtgui_textbox_t *box)
{
rtgui_widget_destroy(RTGUI_WIDGET(box));
}
void rtgui_textbox_ondraw(rtgui_textbox_t *box)
{
/* draw button */
rtgui_rect_t rect;
struct rtgui_dc *dc;
rtgui_color_t fc;
RT_ASSERT(box != RT_NULL);
/* begin drawing */
dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(box));
if (dc == RT_NULL)
return;
/* get widget rect */
rtgui_widget_get_rect(RTGUI_WIDGET(box), &rect);
fc = RTGUI_WIDGET_FOREGROUND(box);
rtgui_rect_inflate(&rect, -1);
/* fill widget rect with white color */
RTGUI_WIDGET_BACKGROUND(box) = white;
rtgui_dc_fill_rect(dc, &rect);
rtgui_rect_inflate(&rect, 1);
/* draw border */
RTGUI_WIDGET_FOREGROUND(box) = RTGUI_RGB(123, 158, 189);
rtgui_dc_draw_rect(dc, &rect);
/* draw text */
RTGUI_WIDGET_FOREGROUND(box) = fc;
if (box->text != RT_NULL)
{
rect.x1 += RTGUI_WIDGET_DEFAULT_MARGIN;
/* draw single text */
if (box->flag & RTGUI_TEXTBOX_MASK)
{
/* draw mask char */
rt_size_t len = rt_strlen(box->text);
if (len > 0)
{
char *text_mask = rtgui_malloc(len + 1);
rt_memset(text_mask, box->mask_char, len + 1);
text_mask[len] = 0;
rtgui_dc_draw_text(dc, text_mask+box->first_pos, &rect);
rtgui_free(text_mask);
}
}
else
{
rtgui_dc_draw_text(dc, box->text+box->first_pos, &rect);
}
}
rtgui_dc_end_drawing(dc);
}
/* set textbox text */
void rtgui_textbox_set_value(rtgui_textbox_t *box, const char *text)
{
if (box->text != RT_NULL)
{
/* yet exist something */
/* free the old text */
rtgui_free(box->text);
box->text = RT_NULL;
}
/* no something */
box->line_length = ((rt_strlen(text) + 1) / RTGUI_TEXTBOX_LINE_MAX + 1) * RTGUI_TEXTBOX_LINE_MAX;
/* allocate line buffer */
box->text = rtgui_malloc(box->line_length+1);
rt_memset(box->text, 0, box->line_length+1);
/* copy text */
rt_memcpy(box->text, text, rt_strlen(text) + 1);
/* set current position */
box->position = rt_strlen(text);
}
const char *rtgui_textbox_get_value(rtgui_textbox_t *box)
{
return (const char *)box->text;
}
void rtgui_textbox_set_mask_char(rtgui_textbox_t *box, const char ch)
{
box->mask_char = ch;
}
char rtgui_textbox_get_mask_char(rtgui_textbox_t *box)
{
return box->mask_char;
}
void rtgui_textbox_set_line_length(rtgui_textbox_t *box, rt_size_t length)
{
rt_uint8_t *new_line;
RT_ASSERT(box != RT_NULL);
/* invalid length */
if (length <= 0)
return;
new_line = rtgui_malloc(length);
if (length < box->line_length)
{
rt_memcpy(new_line, box->text, length - 1);
new_line[length] = '\0';
}
else
{
rt_memcpy(new_line, (const char *)box->text, rt_strlen((const char *)box->text));
}
/* set line length */
box->line_length = length;
}
/* get textbox text area */
void rtgui_textbox_get_edit_rect(rtgui_textbox_t *box, rtgui_rect_t *rect)
{
rtgui_widget_get_rect(RTGUI_WIDGET(box), rect);
rtgui_rect_inflate(rect, -1);
}
rt_bool_t rtgui_textbox_event_handler(struct rtgui_object *object, rtgui_event_t *event)
{
rtgui_widget_t *widget = RTGUI_WIDGET(object);
rtgui_textbox_t *box = RTGUI_TEXTBOX(object);
switch (event->type)
{
case RTGUI_EVENT_PAINT:
#ifndef RTGUI_USING_SMALL_SIZE
if (widget->on_draw != RT_NULL)
widget->on_draw(RTGUI_OBJECT(widget), event);
else
#endif
rtgui_textbox_ondraw(box);
break;
case RTGUI_EVENT_MOUSE_BUTTON:
#ifndef RTGUI_USING_SMALL_SIZE
if (widget->on_mouseclick != RT_NULL)
widget->on_mouseclick(RTGUI_OBJECT(widget), event);
else
#endif
rtgui_textbox_onmouse(box, (struct rtgui_event_mouse *)event);
return RT_TRUE;
case RTGUI_EVENT_KBD:
#ifndef RTGUI_USING_SMALL_SIZE
if (widget->on_key != RT_NULL)
widget->on_key(RTGUI_OBJECT(widget), event);
else
#endif
rtgui_textbox_onkey(RTGUI_OBJECT(box), (struct rtgui_event *)event);
return RT_TRUE;
default:
return rtgui_widget_event_handler(RTGUI_OBJECT(widget), event);
}
return RT_FALSE;
}