www.pudn.com > uC-GUI-V3-98.zip > COLOR_ShowColorBar.c

/* 
********************************************************************************************************* 
*                                             uC/GUI V3.98 
*                        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        : COLOR_ShowColorBar.c 
Purpose     : Example draws a color bar 
---------------------------------------------------------------------- 
*/ 
 
#include "GUI.h" 
#include "LCDConf.h" 
 
/******************************************************************* 
* 
*       static code 
* 
******************************************************************** 
*/ 
 
/******************************************************************* 
* 
*       _DemoShowColorBar 
*/ 
static void _DemoShowColorBar(void) { 
  int x0 = 60, y0 = 40, yStep = 15, i; 
  int xsize = LCD_GetDevCap(LCD_DEVCAP_XSIZE) - x0; 
	GUI_SetFont(&GUI_Font8x16); 
  #if (LCD_FIXEDPALETTE)  
    y0 = 66; 
    yStep = 13; 
    GUI_DispStringAt("Fixed palette: ", 0, 40); 
    GUI_DispDecMin(LCD_FIXEDPALETTE); 
  #endif 
  GUI_DispStringAt("Red",     0, y0 +      yStep); 
  GUI_DispStringAt("Green",   0, y0 +  3 * yStep); 
  GUI_DispStringAt("Blue",    0, y0 +  5 * yStep); 
  GUI_DispStringAt("Grey",    0, y0 +  6 * yStep); 
  GUI_DispStringAt("Yellow",  0, y0 +  8 * yStep); 
  GUI_DispStringAt("Cyan",    0, y0 + 10 * yStep); 
  GUI_DispStringAt("Magenta", 0, y0 + 12 * yStep); 
  for (i = 0; i < xsize; i++) { 
    U16 cs = (255 * (U32)i) / xsize; 
    U16 x = x0 + i;; 
    /* Red */ 
    GUI_SetColor(cs); 
    GUI_DrawVLine(x, y0             , y0 +     yStep - 1); 
    GUI_SetColor(0xff + (255 - cs) * 0x10100L); 
    GUI_DrawVLine(x, y0 +      yStep, y0 + 2 * yStep - 1); 
    /* Green */ 
    GUI_SetColor(cs<<8); 
    GUI_DrawVLine(x, y0 +  2 * yStep, y0 + 3 * yStep - 1); 
    GUI_SetColor(0xff00 + (255 - cs) * 0x10001L); 
    GUI_DrawVLine(x, y0 +  3 * yStep, y0 + 4 * yStep - 1); 
    /* Blue */ 
    GUI_SetColor(cs * 0x10000L); 
    GUI_DrawVLine(x, y0 +  4 * yStep, y0 + 5 * yStep - 1); 
    GUI_SetColor(0xff0000 + (255 - cs) * 0x101L); 
    GUI_DrawVLine(x, y0 +  5 * yStep, y0 + 6 * yStep - 1); 
    /* Gray */ 
    GUI_SetColor((U32)cs * 0x10101L); 
    GUI_DrawVLine(x, y0 +  6 * yStep, y0 + 7 * yStep - 1); 
    /* Yellow */ 
    GUI_SetColor(cs * 0x101); 
    GUI_DrawVLine(x, y0 +  7 * yStep, y0 + 8 * yStep - 1); 
    GUI_SetColor(0xffff + (255 - cs) * 0x10000L); 
    GUI_DrawVLine(x, y0 +  8 * yStep, y0 + 9 * yStep - 1); 
    /* Cyan */ 
    GUI_SetColor(cs * 0x10100L); 
    GUI_DrawVLine(x, y0 +  9 * yStep, y0 + 10 * yStep - 1); 
    GUI_SetColor(0xffff00 + (255 - cs) * 0x1L); 
    GUI_DrawVLine(x, y0 + 10 * yStep, y0 + 11 * yStep - 1); 
    /* Magenta */ 
    GUI_SetColor(cs * 0x10001); 
    GUI_DrawVLine(x, y0 + 11 * yStep, y0 + 12 * yStep - 1); 
    GUI_SetColor(0xff00ff + (255 - cs) * 0x100L); 
    GUI_DrawVLine(x, y0 + 12 * yStep, y0 + 13 * yStep - 1); 
  } 
} 
 
/******************************************************************* 
* 
*       MainTask 
* 
******************************************************************** 
*/ 
 
void MainTask(void) { 
  GUI_Init(); 
  GUI_SetBkColor(GUI_BLACK); 
  GUI_Clear(); 
  GUI_SetColor(GUI_WHITE); 
  GUI_SetFont(&GUI_Font24_ASCII); 
  GUI_DispStringHCenterAt("COLOR_ShowColorBar - Sample", 160, 5); 
  _DemoShowColorBar(); 
  while(1) 
    GUI_Delay(100); 
}