Skinning routine (Sample)

WIDGET_SkinningRoutine.c
File(s) required	WIDGET_SkinningRoutine.c
Runs in simulation	Yes
Runs on target	Yes
Download	WIDGET_SkinningRoutine.c

This sample demonstrates how the appearance of a widget can be customized with a skinning routine. A skinning routine is similar to OwnerDraw routines, in that it also receives different draw commands that are processed by the routine.

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        : WIDGET_SkinningRoutine.c
Purpose     : This sample shows how to give widgets a custom look
              using a skinning routine.
Requirements: WindowManager - (x)
              MemoryDevices - ( )
              AntiAliasing  - ( )
              VNC-Server    - ( )
              PNG-Library   - ( )
              TrueTypeFonts - ( )
---------------------------END-OF-HEADER------------------------------
*/

#include "DIALOG.h"

/*********************************************************************
*
*       Defines
*
**********************************************************************
*/
#define BUTTON_SIZE 50

/*********************************************************************
*
*       Static code
*
**********************************************************************
*/
/*********************************************************************
*
*       _cbButtonSkin
*/
static int _cbButtonSkin(const WIDGET_ITEM_DRAW_INFO * pDrawItemInfo) {
  GUI_RECT Rect;
  char     acBuffer[32];

  //
  // Get size of button
  //
  Rect.x0 = pDrawItemInfo->x0;
  Rect.y0 = pDrawItemInfo->y0;
  Rect.x1 = pDrawItemInfo->x1;
  Rect.y1 = pDrawItemInfo->y1;
  switch (pDrawItemInfo->Cmd) {
  case WIDGET_ITEM_DRAW_TEXT:
    //
    // Draw text of button
    //
    GUI_SetFont(&GUI_Font13_1);
    GUI_SetTextMode(GUI_TM_TRANS);
    if (BUTTON_IsPressed(pDrawItemInfo->hWin)) {
      GUI_SetColor(GUI_RED);
    } else {
      GUI_SetColor(GUI_BLUE);
    }
    BUTTON_GetText(pDrawItemInfo->hWin, acBuffer, sizeof(acBuffer));
    GUI_DispStringInRect(acBuffer, &Rect, GUI_TA_HCENTER | GUI_TA_VCENTER);
    return 0;
  case WIDGET_ITEM_DRAW_BACKGROUND:
    //
    // Draw background of button
    //
    if(BUTTON_IsPressed(pDrawItemInfo->hWin)) {
      GUI_DrawGradientRoundedVEx(&Rect, 3, GUI_GRAY_D0, GUI_GRAY_E7);
    } else {
      GUI_DrawGradientRoundedVEx(&Rect, 3, GUI_GRAY_C0, GUI_GRAY_C8);
    }
    GUI_SetColor(GUI_BLACK);
    GUI_DrawRoundedRectEx(&Rect, 3);
    return 0;
  default:
    return BUTTON_DrawSkinFlex(pDrawItemInfo);
  }
}

/*********************************************************************
*
*       _cbWin
*/
static void _cbWin(WM_MESSAGE * pMsg) {
  WM_HWIN hButton;

  switch (pMsg->MsgId) {
  case WM_CREATE:
    //
    // Create a button
    //
    hButton = BUTTON_Create(10, 10, BUTTON_SIZE, BUTTON_SIZE, GUI_ID_BUTTON0, WM_CF_SHOW);
    BUTTON_SetText(hButton, "Button");
    //
    // Set skinning routine
    //
    BUTTON_SetSkin(hButton, _cbButtonSkin);
    break;
  case WM_PAINT:
    GUI_SetBkColor(GUI_WHITE);
    GUI_Clear();
    break;
  default:
    WM_DefaultProc(pMsg);
    break;
  }
}

/*********************************************************************
*
*       Public code
*
**********************************************************************
*/
/*********************************************************************
*
*       MainTask
*/
void MainTask(void) {
  //
  // Init emWin.
  //
  GUI_Init();
  //
  // Create window
  //
  WM_CreateWindow(0, 0, LCD_GetXSize(), LCD_GetYSize(), WM_CF_SHOW, _cbWin, 0);

  while (1) {
    GUI_Delay(100);
  }
}

/*************************** End of file ****************************/