SCROLLER - Custom (Sample)

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SCROLLER_Custom.c
SCROLLER Custom.png
File(s) required
  • SCROLLER_Custom.c
Runs in simulation Yes
Runs on target Yes
Download SCROLLER_Custom.c

This sample demonstrates how the look of a SCROLLER widget can be customized using its owner draw function.

Demo

Code

/*********************************************************************
*                    SEGGER Microcontroller GmbH                     *
*        Solutions for real time microcontroller applications        *
**********************************************************************
*                                                                    *
*        (c) 1996 - 2022  SEGGER Microcontroller GmbH                *
*                                                                    *
*        Internet: www.segger.com    Support:  support@segger.com    *
*                                                                    *
**********************************************************************

** emWin V6.26 - 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        : SCROLLER_Custom.c
Purpose     : Sample that demonstrates how the appearance of a
              SCROLLER widget can be customized.
Requirements: WindowManager - (x)
              MemoryDevices - ( )
              AntiAliasing  - (x)
              VNC-Server    - ( )
              PNG-Library   - ( )
              TrueTypeFonts - ( )
Wiki link   : https://wiki.segger.com/SCROLLER_-_Custom_%28Sample%29
---------------------------END-OF-HEADER------------------------------
*/

#include "DIALOG.h"
#include <stdio.h>
#include <stdlib.h>

/*********************************************************************
*
*       Defines
*
**********************************************************************
*/
//
// SCROLLER uses a anti-aliasing factor of 4
//
#define HIRES_FACTOR   4

/*********************************************************************
*
*       Static data
*
**********************************************************************
*/
/*********************************************************************
*
*       _acContent_Listview
*/
static const char * _acContent[][6] = {
  { "1002", "Murphy",    "Diane",    "x5800", "President",            "dmurphy@classicmodelcars.com"    },
  { "1056", "Patterson", "Mary",     "x4611", "VP Sales",             "mpatterso@classicmodelcars.com"  },
  { "1076", "Firrelli",  "Jeff",     "x9273", "VP Marketing",         "jfirrelli@classicmodelcars.com"  },
  { "1088", "Patterson", "William",  "x4871", "Sales Manager (APAC)", "wpatterson@classicmodelcars.com" },
  { "1102", "Bondur",    "Gerard",   "x5408", "Sale Manager (EMEA)",  "gbondur@classicmodelcars.com"    },
  { "1143", "Bow",       "Anthony",  "x5428", "Sales Manager (NA)",   "abow@classicmodelcars.com"       },
  { "1165", "Jennings",  "Leslie",   "x3291", "Sales Rep",            "ljennings@classicmodelcars.com"  },
  { "1166", "Thompson",  "Leslie",   "x4065", "Sales Rep",            "lthompson@classicmodelcars.com"  },
  { "1188", "Firrelli",  "Julie",    "x2173", "Sales Rep",            "jfirrelli@classicmodelcars.com"  },
  { "1216", "Patterson", "Steve",    "x4334", "Sales Rep",            "spatterson@classicmodelcars.com" },
  { "1286", "Tseng",     "Foon Yue", "x2248", "Sales Rep",            "ftseng@classicmodelcars.com"     },
  { "1002", "Murphy",    "Diane",    "x5800", "President",            "dmurphy@classicmodelcars.com"    },
  { "1056", "Patterson", "Mary",     "x4611", "VP Sales",             "mpatterso@classicmodelcars.com"  },
  { "1076", "Firrelli",  "Jeff",     "x9273", "VP Marketing",         "jfirrelli@classicmodelcars.com"  },
  { "1088", "Patterson", "William",  "x4871", "Sales Manager (APAC)", "wpatterson@classicmodelcars.com" },
  { "1102", "Bondur",    "Gerard",   "x5408", "Sale Manager (EMEA)",  "gbondur@classicmodelcars.com"    },
  { "1143", "Bow",       "Anthony",  "x5428", "Sales Manager (NA)",   "abow@classicmodelcars.com"       },
  { "1165", "Jennings",  "Leslie",   "x3291", "Sales Rep",            "ljennings@classicmodelcars.com"  },
  { "1166", "Thompson",  "Leslie",   "x4065", "Sales Rep",            "lthompson@classicmodelcars.com"  },
  { "1188", "Firrelli",  "Julie",    "x2173", "Sales Rep",            "jfirrelli@classicmodelcars.com"  },
  { "1216", "Patterson", "Steve",    "x4334", "Sales Rep",            "spatterson@classicmodelcars.com" },
  { "1286", "Tseng",     "Foon Yue", "x2248", "Sales Rep",            "ftseng@classicmodelcars.com"     },
  { "1002", "Murphy",    "Diane",    "x5800", "President",            "dmurphy@classicmodelcars.com"    },
  { "1056", "Patterson", "Mary",     "x4611", "VP Sales",             "mpatterso@classicmodelcars.com"  },
  { "1076", "Firrelli",  "Jeff",     "x9273", "VP Marketing",         "jfirrelli@classicmodelcars.com"  },
  { "1088", "Patterson", "William",  "x4871", "Sales Manager (APAC)", "wpatterson@classicmodelcars.com" },
  { "1102", "Bondur",    "Gerard",   "x5408", "Sale Manager (EMEA)",  "gbondur@classicmodelcars.com"    },
  { "1143", "Bow",       "Anthony",  "x5428", "Sales Manager (NA)",   "abow@classicmodelcars.com"       },
  { "1165", "Jennings",  "Leslie",   "x3291", "Sales Rep",            "ljennings@classicmodelcars.com"  },
  { "1166", "Thompson",  "Leslie",   "x4065", "Sales Rep",            "lthompson@classicmodelcars.com"  },
  { "1188", "Firrelli",  "Julie",    "x2173", "Sales Rep",            "jfirrelli@classicmodelcars.com"  },
  { "1216", "Patterson", "Steve",    "x4334", "Sales Rep",            "spatterson@classicmodelcars.com" },
  { "1286", "Tseng",     "Foon Yue", "x2248", "Sales Rep",            "ftseng@classicmodelcars.com"     },
};

/*********************************************************************
*
*       Static code
*
**********************************************************************
*/
/*********************************************************************
*
*       _CreateListview
*/
static LISTVIEW_Handle _CreateListview(void) {
  LISTVIEW_Handle hListview;
  int             i;

  //
  // Create listview widget
  //
  hListview = LISTVIEW_CreateEx(0, 0, LCD_GetXSize(), LCD_GetYSize(), WM_HBKWIN, WM_CF_SHOW, 0, GUI_ID_LISTVIEW0);
  //
  // Add columns to listview
  //
  LISTVIEW_AddColumn(hListview, 45, "Emp. Nr.", GUI_TA_LEFT);
  LISTVIEW_AddColumn(hListview, 60, "Last Name", GUI_TA_LEFT);
  LISTVIEW_AddColumn(hListview, 60, "First Name", GUI_TA_LEFT);
  LISTVIEW_AddColumn(hListview, 40, "Ext.", GUI_TA_LEFT);
  LISTVIEW_AddColumn(hListview, 110, "Title", GUI_TA_LEFT);
  LISTVIEW_AddColumn(hListview, 180, "Email", GUI_TA_LEFT);
  //
  // Add rows to listview
  //
  for (i = 0; i < GUI_COUNTOF(_acContent); i++) {
    LISTVIEW_AddRow(hListview, _acContent[i]);
  }
  //
  // Set compare functions
  //
  LISTVIEW_SetCompareFunc(hListview, 0, LISTVIEW_CompareDec);
  LISTVIEW_SetCompareFunc(hListview, 1, LISTVIEW_CompareText);
  LISTVIEW_SetCompareFunc(hListview, 2, LISTVIEW_CompareText);
  LISTVIEW_SetCompareFunc(hListview, 3, LISTVIEW_CompareText);
  LISTVIEW_SetCompareFunc(hListview, 4, LISTVIEW_CompareText);
  LISTVIEW_SetCompareFunc(hListview, 5, LISTVIEW_CompareText);
  //
  // Enable sorting
  //
  LISTVIEW_EnableSort(hListview);
  //
  // Enable motion
  //
  LISTVIEW_EnableMotion(hListview, LISTVIEW_CF_MOTION_V);
  return hListview;
}

/*********************************************************************
*
*       _OwnerDrawScroller
*/
static int _OwnerDrawScroller(const WIDGET_ITEM_DRAW_INFO * pInfo) {
  int          r;
  GUI_COLOR    OldColor, Color;
  GUI_COLOR    aColor[2];
  U8           Intens;
  I16        * pPos;
  int          x0, x1;
  int          d;
  int          Off;
  int          xPos;
  I16          PosInv;
  LCD_COLOR (* pfMixColors)(LCD_COLOR, LCD_COLOR, U8);

  switch(pInfo->Cmd) {
  case WIDGET_ITEM_DRAW:
    //
    // Draw thumb rectangle only for active state
    //
    if (pInfo->ItemIndex == SCROLLER_CI_ACTIVE) {
      r        = SCROLLER_GetRadius(pInfo->hWin) * HIRES_FACTOR;
      Color    = SCROLLER_GetColor(pInfo->hWin, pInfo->ItemIndex);
      OldColor = GUI_GetColor();
      GUI_EnableAlpha(1);
      GUI_SetColor(Color);
      GUI_AA_EnableHiRes();
      GUI_AA_SetFactor(HIRES_FACTOR);
      GUI_AA_FillRoundedRect(pInfo->x0, pInfo->y0, pInfo->x1, pInfo->y1, r);
      GUI_AA_DisableHiRes();
      GUI_SetColor(OldColor);
      GUI_EnableAlpha(0);
    }
    //
    // Draw thumb rectangle during fading
    //
    else if (pInfo->ItemIndex == -1) {
      r    = SCROLLER_GetRadius(pInfo->hWin) * HIRES_FACTOR;
      pPos = (I16 *)pInfo->p;
      //
      // Calculate new rectangle position.
      //
      xPos   = WM_GetWinOrgX(pInfo->hWin);
      d      = (LCD_GetXSize() - 1) - (pInfo->x0 + xPos);
      PosInv = (~(*pPos)) & 0x7FFF;
      Off    = ((PosInv * d) / GUI_ANIM_RANGE);
      x0     = pInfo->x0 - (Off * HIRES_FACTOR);
      x1     = pInfo->x1 - (Off * HIRES_FACTOR);
      //
      // Retrieve pointer to color mixing routine.
      //
      pfMixColors = GUI_SetFuncMixColors(NULL);
      GUI_SetFuncMixColors(pfMixColors);
      //
      // Mix colors.
      //
      Intens    = (*pPos * 255) / GUI_ANIM_RANGE;
      aColor[0] = SCROLLER_GetColor(pInfo->hWin, SCROLLER_CI_ACTIVE);
      aColor[1] = SCROLLER_GetColor(pInfo->hWin, SCROLLER_CI_INACTIVE);
      Color     = pfMixColors(aColor[0], aColor[1], Intens);
      OldColor  = GUI_GetColor();
      //
      // Draw rectangle.
      //
      GUI_EnableAlpha(1);
      GUI_SetColor(Color);
      GUI_AA_EnableHiRes();
      GUI_AA_SetFactor(HIRES_FACTOR);
      GUI_AA_FillRoundedRect(x0, pInfo->y0, x1, pInfo->y1, r);
      GUI_AA_DisableHiRes();
      GUI_SetColor(OldColor);
      GUI_EnableAlpha(0);
    }
    return 0;
  default:
    return SCROLLER_OwnerDraw(pInfo);
  }
}

/*********************************************************************
*
*       Public code
*
**********************************************************************
*/
/*********************************************************************
*
*       MainTask
*/
void MainTask(void) {
  LISTVIEW_Handle hListview;
  SCROLLER_Handle hScroller;

  //
  // Init GUI
  //
  GUI_Init();
  WM_SetDesktopColor(GUI_WHITE);
  //
  // Enable multi-buffering
  //
  WM_MULTIBUF_Enable(1);
  //
  // Create LISTVIEW
  //
  hListview = _CreateListview();
  //
  // Attach SCROLLER to LISTVIEW.
  //
  hScroller = SCROLLER_CreateAttached(hListview, SCROLLER_CF_VERTICAL | SCROLLER_CF_TOUCH | SCROLLER_CF_FADING);
  SCROLLER_SetOwnerDraw(hScroller, _OwnerDrawScroller);

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

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