SLIDER - changing appearance

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    • SLIDER - changing appearance

      Hello,
      I am using the SLIDER widget for moving a graphical cursor line in a diagram (see picture).
      The bar and the scale are made invisible. The yellow thumb I made by skinning.
      Now I would like to add a second slider with a different color. How can I achieve this?
      I found API commands for the width but not for the color.
      Can I switch between two skinnings?

      Best regards
      Jan
      Images

      • slider.png

        14.47 kB, 800×480, viewed 84 times

      The post was edited 1 time, last by JanBurg ().

    • Hello,

      there is no need to switch to another skinning function. Just use an option to set user data as a color of the thumb.

      Something like this:

      C Source Code: Main.c

      1. #include "DIALOG.h"
      3. typedef struct {
      4. GUI_COLOR ThumbCol;
      5. } SLIDER_USER_DATA;
      7. int _SLIDER_CustomSkin(const WIDGET_ITEM_DRAW_INFO * pInfo) {
      8. SLIDER_USER_DATA Data;
      10. switch (pInfo->Cmd) {
      11. case WIDGET_ITEM_DRAW_SHAFT:
      12. SLIDER_GetUserData(pInfo->hWin, &Data, sizeof(SLIDER_USER_DATA));
      14. GUI_SetColor(Data.ThumbCol);
      16. GUI_DrawHLine(pInfo->y1 / 2, pInfo->x0, pInfo->x1);
      17. break;
      18. case WIDGET_ITEM_DRAW_THUMB:
      19. SLIDER_GetUserData(pInfo->hWin, &Data, sizeof(SLIDER_USER_DATA));
      21. GUI_SetColor(Data.ThumbCol);
      23. GUI_FillRect(pInfo->x0, pInfo->y0, pInfo->x1, pInfo->y1);
      24. break;
      25. default:
      26. return SLIDER_DrawSkinFlex(pInfo);
      27. break;
      28. }
      30. return 0;
      31. }
      33. void _CreateSlider(int x0, int y0, int xSize, int ySize, GUI_COLOR ThumbCol, int Id) {
      34. SLIDER_Handle hSlider;
      35. SLIDER_USER_DATA Data;
      37. Data.ThumbCol = ThumbCol;
      39. hSlider = SLIDER_CreateUser(x0, y0, xSize, ySize, WM_HBKWIN, WM_CF_SHOW, 0, Id, sizeof(SLIDER_USER_DATA));
      41. SLIDER_SetUserData(hSlider, &Data, sizeof(SLIDER_USER_DATA));
      43. SLIDER_SetSkin(hSlider, _SLIDER_CustomSkin);
      44. }
      46. void MainTask(void) {
      47. GUI_Init();
      49. WM_MULTIBUF_Enable(1);
      51. WM_SetDesktopColor(GUI_BLACK);
      53. _CreateSlider(100, 100, 500, 50, GUI_YELLOW, GUI_ID_SLIDER0);
      55. _CreateSlider(100, 200, 500, 50, GUI_RED, GUI_ID_SLIDER1);
      57. while (1) {
      58. GUI_Delay(50);
      59. }
      60. }
      Display All
      Regards,

      Anthony