GAUGE (Sample)
GAUGE_Usage.c | |
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File(s) required |
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Runs in simulation | Yes |
Runs on target | Yes |
Download | GAUGE_Usage.c |
This sample demonstrates the usage and custom drawing of a GAUGE widget.
Code
/*********************************************************************
* SEGGER Microcontroller GmbH *
* Solutions for real time microcontroller applications *
**********************************************************************
* *
* (c) 1996 - 2020 SEGGER Microcontroller GmbH *
* *
* Internet: www.segger.com Support: support@segger.com *
* *
**********************************************************************
** emWin V6.10 - Graphical user interface for embedded applications **
emWin 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 re-
distributed in any way. We appreciate your understanding and fairness.
----------------------------------------------------------------------
File : GAUGE_Usage.c
Purpose : Sample that demonstrates how the user can use a GAUGE
widget and define its appearance.
Requirements: WindowManager - (x)
MemoryDevices - ( )
AntiAliasing - ( )
VNC-Server - ( )
PNG-Library - ( )
TrueTypeFonts - ( )
---------------------------END-OF-HEADER------------------------------
*/
#include "DIALOG.h"
#include <stdio.h>
/*********************************************************************
*
* Defines
*
**********************************************************************
*/
/*********************************************************************
*
* Static data
*
**********************************************************************
*/
static WM_HWIN _hGauge;
/*********************************************************************
*
* Static code
*
**********************************************************************
*/
/*********************************************************************
*
* _cbWin
*/
static void _cbWin(WM_MESSAGE * pMsg) {
int NCode, Id;
char acBuffer[32];
int Value;
switch(pMsg->MsgId) {
case WM_CREATE:
//
// Create GAUGE widget.
//
_hGauge = GAUGE_CreateUser(10, 10, 300, 200, pMsg->hWin, WM_CF_SHOW, 0, GUI_ID_GAUGE0, 0);
//
// Set starting angle of GAUGE to -30° and ending angle to 210°.
//
GAUGE_SetRange(_hGauge, -30000, 210000);
//
// Set radius of GAUGE.
//
GAUGE_SetRadius(_hGauge, 90);
//
// Set color of the background arc to gray.
// Set color of the foreground arc to green.
//
GAUGE_SetColor(_hGauge, 0, GUI_GRAY);
GAUGE_SetColor(_hGauge, 1, GUI_GREEN);
//
// Set width of the background arc to 16 px.
// Set width of the foreground arc to 8 px.
//
GAUGE_SetWidth(_hGauge, 0, 16);
GAUGE_SetWidth(_hGauge, 1, 8);
//
// Set range of values from 0 to 1000.
//
GAUGE_SetValueRange(_hGauge, 0, 1000);
//
// Set background color of the widget to white.
//
GAUGE_SetBkColor(_hGauge, GUI_WHITE);
//
// Align the GAUGE to be in the center.
//
GAUGE_SetAlign(_hGauge, GUI_ALIGN_HCENTER | GUI_ALIGN_VCENTER);
GAUGE_SetOffset(_hGauge, 0, 15);
//
// Set both arcs to have round edged ends.
//
GAUGE_SetRoundedEnd(_hGauge, 1);
GAUGE_SetRoundedValue(_hGauge, 1);
break;
case WM_PAINT:
GUI_SetBkColor(GUI_BLACK);
GUI_Clear();
//
// Display value of GAUGE.
//
Value = GAUGE_GetValue(_hGauge);
sprintf(acBuffer, "Value: %d", Value);
GUI_SetColor(GUI_WHITE);
GUI_DispStringAt(acBuffer, 320, 10);
break;
case WM_NOTIFY_PARENT:
Id = WM_GetId(pMsg->hWinSrc);
NCode = pMsg->Data.v;
switch(Id) {
case GUI_ID_GAUGE0:
switch(NCode) {
case WM_NOTIFICATION_VALUE_CHANGED:
//
// Invalidate parent window when GAUGE's value has changed to update the displayed value.
//
WM_InvalidateWindow(pMsg->hWin);
break;
}
break;
}
break;
default:
WM_DefaultProc(pMsg);
}
}
/*********************************************************************
*
* Public code
*
**********************************************************************
*/
/*********************************************************************
*
* MainTask
*/
void MainTask(void) {
int i;
GUI_Init();
//
// Enable multi-buffering.
//
WM_MULTIBUF_Enable(1);
//
// Create parent window that creates the GAUGE as a child window.
//
WM_CreateWindow(0, 0, LCD_GetXSize(), LCD_GetYSize(), WM_CF_SHOW, _cbWin, 0);
//
// Continously update GAUGE.
//
while (1) {
if (_hGauge) {
for (i = 0; i < 1000; i += 10) {
GAUGE_SetValue(_hGauge, i);
GUI_Delay(1);
}
for (i = 1000; i >= 0; i -= 10) {
GAUGE_SetValue(_hGauge, i);
GUI_Delay(1);
}
}
}
}
/*************************** End of file ****************************/