widget.c

EGui是一个开源的图形系统软件,类似于QT/Embedded、GTK-FB、MicroWindow。目标是嵌入式平台整合解 决方案。基于Linux Framebuffer 设备驱动上实现。有完

/********************************************************
 * Egui code,LGPL
 * Function : Widget common function 
 * Author: [e-mail]
 * Data : 2006-03-21
 * $Id: widget.c,v 1.8 2006/04/14 00:53:28 hjs Exp $
 ********************************************************/
#include <Egui.h>
#include <widget.h>


void 
widget_show (EGui_Widget     *widget)
{
  if (widget->func->show != NULL)
    widget->func->show (widget);
}

void 
widget_draw (EGui_Widget     *widget)
{
  if (widget->func->draw != NULL)
    widget->func->draw (widget);

  /* display all child */
  if (widget->child)
    {
      EGui_Widget *c_widget;
      widget_list *list;
      int have_c = 1;

      c_widget = widget->child;
      
      while (have_c)
	{
	  if (c_widget->status != DISPLAY_NOT)
	    {
	      if (c_widget->func->draw)
		widget_draw (c_widget);
	    }
	  /* find next brother */
	  if (c_widget->list->next != NULL)
	   {
	     list = (widget_list *) c_widget->list->next;
	     c_widget = list->widget;
	   }
	  else 
	    have_c = 0;	  
	}
    }
}

void 
widget_draw_in (EGui_Widget  *widget)
{
  if (widget->func->draw_in != NULL)
    widget->func->draw_in (widget);
}

void 
widget_draw_out (EGui_Widget  *widget)
{

  if (widget->func->draw_out != NULL)
    widget->func->draw_out (widget);  
}

void 
widget_click_left (EGui_Widget  *widget)
{

  if (widget->func->click_left != NULL)
    widget->func->click_left (widget);

}

void 
widget_rel_left (EGui_Widget  *widget)
{

  if (widget->func->rel_left != NULL)
    widget->func->rel_left (widget); 
  /* user callback */
  if (widget->func->user_click_left != NULL)
    widget->func->user_click_left(widget); 
}

void 
widget_press_key (EGui_Widget  *widget,EGui_Event *event)
{

  if (widget->func->press_key != NULL)
    widget->func->press_key (widget,event); 
  /* user callback */
  if (widget->func->user_press_key != NULL)
    widget->func->user_press_key(widget,event); 
}


void
widget_move (EGui_Widget *widget,int x,int y)
{
  int old_x;
  int old_y;
  int width,height;

  width  = widget->width  - widget->x;
  height = widget->height - widget->y;

  if (widget->parent)
    {
      old_x = widget->parent->x;
      old_y = widget->parent->y;
    }
  else 
    {
      old_x = widget->window->frame_w;
      old_y = widget->window->title_h + old_x;
    }

  widget->x      = old_x  + x;
  widget->y      = old_y  + y;
  widget->width  = width  + widget->x;
  widget->height = height + widget->y;
  
  widget->list->vx = widget->x;
  widget->list->vy = widget->y;
  widget->list->vw = widget->width;
  widget->list->vh = widget->height;
}

void
widget_register_callback (EGui_Widget *widget, int type,
			  void (* callback) ( EGui_Widget     *widget))
{
  switch (type)
    {
    case BUTTON_CLICK_LEFT:
      widget->func->user_click_left = callback;
      break;
    default:
      printf ("Don't support event callback type =%d\n",type);
      break;
    }

}

void
widget_set_focus (EGui_Widget *widget)
{
  focus_widget = widget;
}
void
widget_set_name(EGui_Widget     *widget,char *name)
{
  int len;
  
  len = strlen (name);
  if (len > NAME_MAX)
    len = NAME_MAX;
  else
    widget->name[len] = '\0';

  strncpy (widget->name,name,len);
}

void 
widget_free (EGui_Widget     *widget)
{
  free(widget);
}