lcd_drawvline.c

在fs2410开发板上的移植好的ucos操作系统和ucgui图形用户接口。

/*
*********************************************************************************************************
*                                                uC/GUI
*                        Universal graphic software for embedded applications
*
*                       (c) Copyright 2002, Micrium Inc., Weston, FL
*                       (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*              礐/GUI is protected by international copyright laws. Knowledge of the
*              source code may not be used to write a similar product. This file may
*              only be used in accordance with a license and should not be redistributed
*              in any way. We appreciate your understanding and fairness.
*
----------------------------------------------------------------------
File        : LCD_DrawVLine.c
Purpose     : Implementation of optional routines
---------------------------END-OF-HEADER------------------------------
*/


#include "LCD_Private.h"
#include "GUI_Private.h"

/*
        *********************************************************
        *                                                       *
        *       Macros for internal use                         *
        *                                                       *
        *********************************************************
*/

#define RETURN_IF_Y_OUT() \
  if (y < GUI_Context.ClipRect.y0) return;             \
  if (y > GUI_Context.ClipRect.y1) return;

#define RETURN_IF_X_OUT() \
  if (x < GUI_Context.ClipRect.x0) return;             \
  if (x > GUI_Context.ClipRect.x1) return;

#define CLIP_X() \
  if (x0 < GUI_Context.ClipRect.x0) { x0 = GUI_Context.ClipRect.x0; } \
  if (x1 > GUI_Context.ClipRect.x1) { x1 = GUI_Context.ClipRect.x1; }

#define CLIP_Y() \
  if (y0 < GUI_Context.ClipRect.y0) { y0 = GUI_Context.ClipRect.y0; } \
  if (y1 > GUI_Context.ClipRect.y1) { y1 = GUI_Context.ClipRect.y1; }



void LCD_DrawVLine  (int x, int y0,  int y1) {
  /* Perform clipping and check if there is something to do */
  RETURN_IF_X_OUT();
  CLIP_Y();
  if (y1<y0)
    return;
  /* Call driver to draw */
  LCDDEV_L0_DrawVLine(x, y0, y1);
}