www.pudn.com > ucosv2(GUI).rar > GUICore.c

/*
*********************************************************************************************************
*                                                uC/GUI
*                        Universal graphic software for embedded applications
*
*                       (c) Copyright 2002, Micrium Inc., Weston, FL
*                       (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*              µC/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        : GUICore.C 
Purpose     : Core file for emWin GSC 
---------------------------END-OF-HEADER------------------------------ 
*/ 
 
 
#include            /* needed for definition of NULL */ 
 
#define  GL_CORE_C 
#include "GUI_Private.H" 
 
#include "GUIDebug.h" 
 
 
 
/********************************************************************* 
* 
*            GUI_ClearRect 
* 
********************************************************************** 
*/ 
 
void GUI_ClearRect(int x0, int y0, int x1, int y1) { 
  GUI_DRAWMODE PrevDraw; 
  GUI_LOCK(); 
  PrevDraw = LCD_SetDrawMode(GUI_DRAWMODE_REV); 
  #if GUI_WINSUPPORT 
    WM_ADDORG(x0,y0); 
    WM_ADDORG(x1,y1); 
    WM_ITERATE_START(NULL) { 
  #endif 
  LCD_FillRect(x0,y0,x1,y1); 
  #if GUI_WINSUPPORT 
    } WM_ITERATE_END(); 
  #endif 
  LCD_SetDrawMode(PrevDraw); 
  GUI_UNLOCK(); 
} 
 
 
 
/********************************************************************* 
* 
*            GUI_Clear 
* 
********************************************************************** 
*/ 
 
 
void GUI_Clear(void) { 
  GUI_GotoXY(0,0);     /* Reset text cursor to upper left */ 
  GUI_ClearRect(GUI_XMIN, GUI_YMIN, GUI_XMAX, GUI_YMAX); 
} 
 
 
/* 
        ******************************************************** 
        *                                                      * 
        *                 GUI_SelectLCD                        * 
        *                                                      * 
        ******************************************************** 
*/ 
 
#if GUI_SUPPORT_MEMDEV 
void GUI_SelectLCD(void) { 
  int hDevDataOld = GUI_Context.hDevData; 
  GUI_Context.hDevData = 0; 
  GUI_Context.pDeviceAPI   = &LCD_L0_APIList; 
  GUI_Context.pClipRect_HL = &GUI_Context.ClipRect; 
  LCD_SetClipRectMax(); 
  /* If we are switching batck, restore the former clip rect */ 
  if (hDevDataOld) 
    GUI_Context.ClipRect = GUI_Context.ClipRectPrev; 
  #if GUI_WINSUPPORT 
    WM_Activate(); 
  #endif 
} 
#endif 
 
 
/* 
        ******************************************************** 
        *                                                      * 
        *                 GUI_Init                             * 
        *                                                      * 
        *     Init of GUI internal data structures & variables * 
        *                                                      * 
        ******************************************************** 
*/ 
 
const tLCD_HL_APIList LCD_HL_APIList = { 
  LCD_DrawHLine, 
  LCD_DrawPixel 
}; 
 
static void _InitContext(GUI_CONTEXT* pContext) { 
  #if GUI_SUPPORT_MEMDEV 
    GUI_SelectLCD(); 
  #else 
    LCD_SetClipRectMax(); 
  #endif 
  pContext->pLCD_HL      = &LCD_HL_APIList; 
  pContext->pAFont       = GUI_DEFAULT_FONT; 
  pContext->pClipRect_HL = &GUI_Context.ClipRect; 
  pContext->PenSize      = 1; 
  /* Variables in WM module */ 
  #if GUI_WINSUPPORT 
    pContext->hAWin    = WM_GetDesktopWindow(); 
  #endif 
  /* Variables in GUI_AA module */ 
  pContext->AA_Factor = 3; 
  LCD_SetBkColor(GUI_DEFAULT_BKCOLOR); 
  LCD_SetColor(GUI_DEFAULT_COLOR); 
} 
 
 
 
 
int GUI_Init(void) { 
  int r; 
  GUI_DEBUG_LOG("\nGUI_Init()"); 
  /* Init system wide globals first */ 
  GUI_DecChar = '.'; 
  GUI_X_Init(); 
  /* Init context */ 
  _InitContext(&GUI_Context); 
  GUITASK_INIT(); 
  r = LCD_Init(); 
  #if GUI_WINSUPPORT 
    WM_Init(); 
  #endif 
  return r; 
}