C++ GrStringDraw函数代码示例

void PrintReminder(tContext *context, y_menus f_menuChoice){
	char outString[32] = "";
	unsigned char text_start = 18;

	// Draw top and bottom banner and buttons
	LoadLeftButton( context , "BACK");
	LoadMiddleButton( context , "SEL");
	//LoadRightButton("");


	// Menu options
	GrStringDraw( context, "Create Reminder", AUTO_STRING_LENGTH, 5, 18, OPAQUE_TEXT);
	GrStringDraw( context, "Remove Reminder", AUTO_STRING_LENGTH, 5, 31, OPAQUE_TEXT);


	// Highlight selected item
	switch (f_menuChoice) {
	case Reminder_Create:
		text_start = 18;
		strcpy(outString, "Create Reminder");
		break;
	case Reminder_Remove:
		text_start = 31;
		strcpy(outString, "Remove Reminder");
		break;
	default: break;
	}

	GrContextForegroundSet(context, ClrWhite); //ClrBlack       this affects the highlight color
	GrContextBackgroundSet(context, ClrBlack);    //ClrWhite      this affects the text color in the highlight
	GrStringDraw(context, outString, AUTO_STRING_LENGTH, 5, text_start, OPAQUE_TEXT);
	GrContextForegroundSet(context, ClrBlack);
	GrContextBackgroundSet(context, ClrWhite);

}

void window_drawtime(tContext *pContext, long y, uint8_t times[3], uint8_t selected)
{
  char data[3];
  data[0] = data[1] = '0';
  data[2] = ':';
  #define SPACING 3
  uint8_t height = GrStringHeightGet(pContext);
  
  uint8_t width_all = GrStringWidthGet(pContext, data, 3) + 10;
  uint8_t width_digit = GrStringWidthGet(pContext, data, 2) + 4;

  long startx = (LCD_WIDTH - width_all - width_all - width_digit) / 2;
  if (startx < 0) startx = 0;

  for(int i = 0; i < 3; i++)
  {
    data[0] = '0' + times[i] / 10;
    data[1] = '0' + times[i] % 10;

    GrContextForegroundSet(pContext, ClrWhite);
    GrContextBackgroundSet(pContext, ClrBlack);

    if (selected & (1 << i))
      window_selecttext(pContext, data, 2, startx + SPACING + i * width_all, y);
    else
      GrStringDraw(pContext, data, 2, startx + SPACING + i * width_all, y, 0);

    if (i != 2)
    {
      GrContextForegroundSet(pContext, ClrWhite);
      GrContextBackgroundSet(pContext, ClrBlack);
      GrStringDraw(pContext, ":", 1, startx + SPACING + width_digit + i * width_all, y, 0);
    }
  }
}

//*****************************************************************************
//
// Display the interrupt state on the CSTN.  The currently active and pending
// interrupts are displayed.
//
//*****************************************************************************
void
DisplayIntStatus(void)
{
    uint32_t ui32Temp;
    char pcBuffer[6];

    //
    // Display the currently active interrupts.
    //
    ui32Temp = HWREG(NVIC_ACTIVE0);
    pcBuffer[0] = ' ';
    pcBuffer[1] = (ui32Temp & 1) ? '1' : ' ';
    pcBuffer[2] = (ui32Temp & 2) ? '2' : ' ';
    pcBuffer[3] = (ui32Temp & 4) ? '3' : ' ';
    pcBuffer[4] = ' ';
    pcBuffer[5] = '\0';
    GrStringDraw(&g_sContext, pcBuffer, -1, 48, 32, 1);

    //
    // Display the currently pending interrupts.
    //
    ui32Temp = HWREG(NVIC_PEND0);
    pcBuffer[1] = (ui32Temp & 1) ? '1' : ' ';
    pcBuffer[2] = (ui32Temp & 2) ? '2' : ' ';
    pcBuffer[3] = (ui32Temp & 4) ? '3' : ' ';
    GrStringDraw(&g_sContext, pcBuffer, -1, 48, 44, 1);

    //
    // Flush the display.
    //
    GrFlush(&g_sContext);
}

static void drawGridTime(tContext *pContext)
{
  char buf[20];
  uint8_t time[3];
  time[0] = workout_time % 60;
  time[1] = (workout_time / 60 ) % 60;
  time[2] = workout_time / 3600;

  GrContextForegroundSet(pContext, ClrBlack);
  switch(window_readconfig()->sports_grid)
  {
  case GRID_3:
    GrContextFontSet(pContext, (tFont*)&g_sFontExIcon16);
    GrStringDraw(pContext, "i", 1, 10, 15, 0);
    GrContextFontSet(pContext, &g_sFontGothic18);
    GrStringDraw(pContext, datapoints[0].name, -1, 28, 15, 0);
    GrContextFontSet(pContext, &g_sFontGothic28b);
    sprintf(buf, "%02d:%02d:%02d", time[2], time[1], time[0]);
    GrStringDrawCentered(pContext, buf, -1, LCD_WIDTH/2, 50, 0);
    break;
  case GRID_4:
  case GRID_5:
    GrContextFontSet(pContext, &g_sFontGothic28b);
    sprintf(buf, "%02d:%02d:%02d", time[2], time[1], time[0]);
    GrStringDrawCentered(pContext, buf, -1, LCD_WIDTH/2, 18, 0);
    break;
  }
}

//*****************************************************************************
//
// This function updates the contents of the directory text window.
//
// \param None.
//
// This function is will update the state of the directory window.  This can
// be the result of a DirUpdate() call which completely changed the contents
// of the window, or a selection changed and the screen needs to be updated.
//
// \return None.
//
//*****************************************************************************
void
UpdateWindow(void)
{
    int iIdx;
    int iLine;

    //
    // Set the first line of the directory text window.
    //
    iLine = TOP_HEIGHT;

    //
    // Clear out the text area for the entries.
    //
    ClearTextBox();

    //
    // Display all valid values.
    //
    for(iIdx = 0; iIdx < g_DirData.ulValidValues; iIdx++)
    {
        //
        // Change the backgound for the selected item.
        //
        if(g_DirData.ulSelectIndex == iIdx)
        {
            GrContextBackgroundSet(&g_sContext, ClrGray);
        }
        else
        {
            GrContextBackgroundSet(&g_sContext, ClrBlack);
        }

        //
        // Change the color for directories.
        //
        if (g_DirData.FileInfo[iIdx].fattrib & AM_DIR)
        {
            GrContextForegroundSet(&g_sContext, DIR_COLOR);
            GrStringDraw(&g_sContext, g_DirData.FileInfo[iIdx].fname,
                         100, 0, iLine, 1);
        }
        //
        // Change the color for files.
        //
        else
        {
            GrContextForegroundSet(&g_sContext, FILE_COLOR);
            GrStringDraw(&g_sContext, g_DirData.FileInfo[iIdx].fname,
                         100, 0, iLine, 1);
        }

        //
        // Move down by the height of the characters used.
        //
        iLine += g_sFontFixed6x8.ucHeight;
    }
}

uint8_t test_motor(uint8_t ev, uint16_t lparam, void* rparam)
{
	switch(ev)
	{
		case EVENT_WINDOW_CREATED:
		data = 0;
		break;

		case EVENT_KEY_PRESSED:
		{
			switch(lparam)
			{
				case KEY_UP:
				data++;
				if (data > 16) data = 1;
				break;
				case KEY_DOWN:
				data--;
				if (data == 0) data = 16;
				break;
				case KEY_ENTER:
				data = 0;
				break;
			}
			motor_on(data, 0);
			window_invalid(NULL);
			break;
		}
		case EVENT_WINDOW_PAINT:
		{
		  char buf[32];
		  tContext *pContext = (tContext*)rparam;
		  GrContextForegroundSet(pContext, ClrBlack);
		  GrRectFill(pContext, &client_clip);

		  GrContextForegroundSet(pContext, ClrWhite);
  	      GrContextFontSet(pContext, (tFont*)&g_sFontGothic18);
 		  GrStringDraw(pContext, "Test Motor", -1, 32, 50, 0);

    	  sprintf(buf, "Motor Level: %d", data);
 		  GrStringDraw(pContext, buf, -1, 5, 70, 0);

 		  window_button(pContext, KEY_UP, "+");
 		  window_button(pContext, KEY_DOWN, "-");
 		  window_button(pContext, KEY_ENTER, "Reset");

 		  break;
 		}
		case EVENT_EXIT_PRESSED:
		motor_on(0, 0);
		return 0; // return 0 to close the window
		default:
		return 0;
	}

	return 1;
}

//*****************************************************************************
//
// Handles scrolling the text on the screen.
//
//*****************************************************************************
static void
ScrollText(void)
{
    int32_t i32Idx;
    uint32_t ui32Line, ui32Start;

    ui32Line = 0;

    //
    // Skip the oldest entry in the circular list.
    //
    if(g_ui32CurrentLine == (MAX_LINES - 1)) {
        //
        // If at the end of the list wrap to entry 1.
        //
        ui32Start = 1;
    } else {
        //
        // The oldest is 1 in front of the most recent.
        //
        ui32Start = g_ui32CurrentLine + 2;
    }

    //
    // Print lines from the current position down first.
    //
    for(i32Idx = ui32Start; i32Idx < MAX_LINES; i32Idx++) {
        GrStringDraw(&g_sContext, g_ppcLines[i32Idx],
                     strlen(g_ppcLines[i32Idx]), DISPLAY_TEXT_BORDER_H,
                     DISPLAY_BANNER_HEIGHT + DISPLAY_TEXT_BORDER +
                     (ui32Line * GrFontHeightGet(g_psFontFixed6x8)), 1);

        ui32Line++;
    }

    //
    // If not the special case of the last line where everything has already
    // printed, print the remaining lines.
    //
    if(g_ui32CurrentLine != (MAX_LINES - 1)) {
        for(i32Idx = 0; i32Idx <= g_ui32CurrentLine; i32Idx++) {
            GrStringDraw(&g_sContext, g_ppcLines[i32Idx],
                         strlen(g_ppcLines[i32Idx]),
                         DISPLAY_TEXT_BORDER_H,
                         DISPLAY_BANNER_HEIGHT + DISPLAY_TEXT_BORDER +
                         (ui32Line * GrFontHeightGet(g_psFontFixed6x8)), 1);

            ui32Line++;
        }
    }

    //
    // Reset the column to zero.
    //
    g_ui32Column = 0;
}

//*****************************************************************************
//
// The main loop of the application.  This implementation is specific to the
// EK-LM4F232 board and merely displays the current timer count value and the
// number of interrupts taken.  It contains nothing directly relevant to the
// timer configuration or operation.
//
//*****************************************************************************
void
MainLoopRun(void)
{
    uint32_t ui32Count, ui32LastCount;

    //
    // Set up for the main loop.
    //
    ui32LastCount = 10;

    //
    // Loop forever while the timer runs.
    //
    while(1)
    {
        //
        // Get the current timer count.
        //
        ui32Count = ROM_TimerValueGet(TIMER4_BASE, TIMER_A);

        //
        // Has it changed?
        //
        if(ui32Count != ui32LastCount)
        {
            //
            // Yes - update the display.
            //
            usnprintf(g_pcPrintBuff, PRINT_BUFF_SIZE, "%d ", ui32Count);
            GrStringDraw(&g_sContext, g_pcPrintBuff, -1, 80, 26, true);

            //
            // Remember the new count value.
            //
            ui32LastCount = ui32Count;
        }

        //
        // Has there been an interrupt since last we checked?
        //
        if(HWREGBITW(&g_ui32Flags, 0))
        {
            //
            // Clear the bit.
            //
            HWREGBITW(&g_ui32Flags, 0) = 0;

            //
            // Update the interrupt count.
            //
            usnprintf(g_pcPrintBuff, PRINT_BUFF_SIZE, "%d ", g_ui32IntCount);
            GrStringDraw(&g_sContext, g_pcPrintBuff, -1, 80, 36, true);
        }
    }
}

//*****************************************************************************
//
// Handles paint requests for the introduction canvas widget.
//
//*****************************************************************************
void
OnIntroPaint(tWidget *psWidget, tContext *psContext)
{
    //
    // Display the introduction text in the canvas.
    //
    GrContextFontSet(psContext, g_psFontCm16);
    GrContextForegroundSet(psContext, ClrSilver);
    GrStringDraw(psContext, "This application demonstrates the ", -1,
                 10, 30, 0);
    GrStringDraw(psContext, "TivaWare Graphics Library.", -1, 
                 10, (30+16), 0);
    GrStringDraw(psContext, "Each panel shows a different feature of", -1, 
                 10, (30+(16*2)), 0);
    GrStringDraw(psContext, "the graphics library. Widgets on the panels", -1, 
                 10, (30+(16*3)), 0);
    GrStringDraw(psContext, "are fully operational; pressing them will", -1, 
                 10, (30+(16*4)), 0);
    GrStringDraw(psContext, "result in visible feedback of some kind.", -1, 
                 10, (30+(16*5)), 0);
    GrStringDraw(psContext, "Press the + and - buttons at the bottom", -1, 
                 10, (30+(16*6)), 0);
    GrStringDraw(psContext, "of the screen to move between the panels.", -1, 
                 10, (30+(16*7)), 0);
}

int main(void)
{
   SysCtlClockSet(SYSCTL_SYSDIV_4|SYSCTL_USE_PLL|SYSCTL_OSC_MAIN|SYSCTL_XTAL_16MHZ);

   Kentec320x240x16_SSD2119Init();
   GrContextInit(&sContext, &g_sKentec320x240x16_SSD2119);
   ClrScreen();

   GrImageDraw(&sContext, g_pui8Image, 0, 0);
   GrFlush(&sContext);

   SysCtlDelay(SysCtlClockGet());
   // Later lab steps go between here

   ClrScreen();

   sRect.i16XMin = 1;
   sRect.i16YMin = 1;
   sRect.i16XMax = 318;
   sRect.i16YMax = 238;
   GrContextForegroundSet(&sContext, ClrRed);
   GrContextFontSet(&sContext, &g_sFontCmss30b);
   GrStringDraw(&sContext, "Texas", -1, 110, 2, 0);
   GrStringDraw(&sContext, "Instruments", -1, 80, 32, 0);
   GrStringDraw(&sContext, "Graphics", -1, 100, 62, 0);
   GrStringDraw(&sContext, "Lab", -1, 135, 92, 0);
   GrContextForegroundSet(&sContext, ClrWhite);
   GrRectDraw(&sContext, &sRect);
   GrFlush(&sContext);

   SysCtlDelay(SysCtlClockGet());

   GrContextForegroundSet(&sContext, ClrYellow);
   GrCircleFill(&sContext, 80, 182, 50);

   sRect.i16XMin = 160;
   sRect.i16YMin = 132;
   sRect.i16XMax = 312;
   sRect.i16YMax = 232;
   GrContextForegroundSet(&sContext, ClrGreen);
   GrRectDraw(&sContext, &sRect);

   SysCtlDelay(SysCtlClockGet());

   // and here
   ClrScreen();
   while(1)
   {
   }
}

static void drawItem(tContext *pContext, uint8_t n, char icon, const char* text, const char* value)
{
  if (icon)
    {
      GrContextFontSet(pContext, (tFont*)&g_sFontExIcon16);
      GrStringDraw(pContext, &icon, 1, 3, 12 + n * LINEMARGIN, 0);
    }

  // draw text
  GrContextFontSet(pContext, &g_sFontGothic24b);
  GrStringDraw(pContext, text, -1, 20, 10 + n * LINEMARGIN, 0);

  uint8_t width = GrStringWidthGet(pContext, value, -1);
  GrStringDraw(pContext, value, -1, LCD_WIDTH - width - 4, 10 + n * LINEMARGIN, 0);
}

//*****************************************************************************
//
// Handles paint requests for the firmware update canvas widget.
//
//*****************************************************************************
void
OnFirmwarePaint(tWidget *pWidget, tContext *pContext)
{
    unsigned long ulLines;
    long lLineHeight, lOffset;

    lLineHeight = GrFontHeightGet(FONT_14PT);
    lOffset = 32;

    //
    // Display the firmware update instruction text in the canvas.
    //
    GrContextFontSet(pContext, FONT_14PT);
    GrContextForegroundSet(pContext, ClrSilver);
    GrStringGet(STR_UPDATE_TEXT, g_pcBuffer, SCOMP_MAX_STRLEN);

    ulLines = DrawStringWrapped(pContext, g_pcBuffer, lLineHeight, 1, lOffset,
                                g_pLanguageTable[g_ulLangIdx].bBreakOnSpace );

    //
    // Move down by 1/4 of a line.
    //
    lOffset += lLineHeight/4;

    //
    // Format the UART setting information string
    //
    GrStringGet(STR_UART, g_pcBuffer, SCOMP_MAX_STRLEN);
    GrStringDraw(pContext, g_pcBuffer, -1, 1,
                 lOffset + (ulLines * lLineHeight), 0);
}

/*******************************************************************************
 * @fn          devpkLcdText
 *
 * @brief       Write a text string to a specific line/column of the display
 *
 * @param       str - text to apply
 * @param       line - line index (0 .. 11)
 * @param       col - column index (0 .. 15)
 *
 * @return      true if success
 */
bool devpkLcdText(const char *str, uint8_t line, uint8_t col)
{
  if (hLcdPin != NULL)
  {
    uint8_t xp, yp;

    Semaphore_pend(hSemLCD, BIOS_WAIT_FOREVER);

    xp = col * CHAR_WIDTH + 1;
    yp = line * CHAR_HEIGHT + 0;

    // Draw a text on the display
    GrStringDraw(&g_sContext,
                 str,
                 AUTO_STRING_LENGTH,
                 xp,
                 yp,
                 OPAQUE_TEXT);

    GrFlush(&g_sContext);

    Semaphore_post(hSemLCD);
  }

  return hLcdPin != NULL;
}

void output(int n,int (*drawArray)[10]){

	static char pcCanvasText[5];

	int i,j,color;
	for ( i = 0; i < 4; ++i){
		for ( j = 0; j < 4; ++j){
			sRect.i16XMin = 64+i*48 +1;//16
			sRect.i16YMin = 24+j*48 +1;//64
			sRect.i16XMax = 112+i*48 -1;
			sRect.i16YMax = 72+j*48 -1;

			color = drawArray[i][j]%5;
			GrContextForegroundSet(&context, DrawColor[color]);
			GrRectFill(&context, &sRect);

			usprintf(pcCanvasText, "%3d", drawArray[i][j]);

			GrContextForegroundSet(&context, ClrBlack);
		    GrContextFontSet(&context, &g_sFontCm20);
		    GrStringDraw(&context, pcCanvasText, -1, 64+i*48 +1, 24+j*48 +16, 0);


		}

	}
}

void lcdPutChar(char_t c)
{
   if(c == '\r')
   {
      lcdColumn = 0;
   }
   else if(c == '\n')
   {
      lcdColumn = 0;
      lcdLine++;
   }
   else if(lcdLine < 26 && lcdColumn < 40)
   {
      char_t buffer[2];
      buffer[0] = c;
      buffer[1] = '\0';

      //Display current character
      GrStringDraw(&grContext, buffer, 1, lcdColumn * 6, lcdLine * 12, TRUE);

      //Advance the cursor position
      if(++lcdColumn >= 40)
      {
         lcdColumn = 0;
         lcdLine++;
      }
   }
}