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changeset 1725:2e0f87ec24fe

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Create a separate disabled image list with washed out and grayscale bitmaps on Windows. This allows bitmap buttons to change looks when visibly disabled... this also helps on XP because the default way icons are made to look disabled is terrible.
author bsmith@81767d24-ef19-dc11-ae90-00e081727c95
date Mon, 14 May 2012 22:26:26 +0000
parents 48983a2f839f
children a02ce34692f0
files win/dw.c
diffstat 1 files changed, 37 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/win/dw.c	Mon May 14 21:36:28 2012 +0000
+++ b/win/dw.c	Mon May 14 22:26:26 2012 +0000
@@ -757,11 +757,15 @@
    else if(_tcsnicmp(tmpbuf, TOOLBARCLASSNAME, _tcslen(TOOLBARCLASSNAME)+1) == 0)
    {
       HIMAGELIST imlist = (HIMAGELIST)SendMessage(handle, TB_GETIMAGELIST, 0, 0);
+      HIMAGELIST dimlist = (HIMAGELIST)SendMessage(handle, TB_GETDISABLEDIMAGELIST, 0, 0);
       
       SendMessage(handle, TB_SETIMAGELIST, 0, 0);
+      SendMessage(handle, TB_SETDISABLEDIMAGELIST, 0, 0);
       
       if(imlist)
          ImageList_Destroy(imlist);
+      if(dimlist)
+         ImageList_Destroy(dimlist);
    }
 #endif   
    else if(_tcsnicmp(tmpbuf, FRAMECLASSNAME, _tcslen(FRAMECLASSNAME)+1)==0)
@@ -6166,11 +6170,36 @@
    return tmp;
 }
 
+/* Internal function to create a grayscale bitmap from a color one */
+void _to_grayscale(HBITMAP hbm, int width, int height)
+{
+   HDC hdc = CreateCompatibleDC(NULL);
+   if (hdc) 
+   {
+      HBITMAP hbmPrev = SelectBitmap(hdc, hbm);
+      int x, y;
+
+      for(y=0;y<height;y++)
+      {
+         for(x=0;x<width;x++)
+         {
+            COLORREF c = GetPixel(hdc, x, y);
+            /* Use half-values then add 127 to make it look washed out */
+            int luma = (int)(GetRValue(c)*0.15 + GetGValue(c)*0.3+ GetBValue(c)*0.06) + 127;
+
+            SetPixel(hdc, x, y, RGB(luma,luma,luma));
+         }
+      }
+      SelectBitmap(hdc, hbmPrev);
+      DeleteDC(hdc);
+   }
+}
+
 /* Internal function to create a toolbar based button */
 HWND _create_toolbar(char *text, ULONG id, HICON icon, HBITMAP hbitmap)
 {
    HWND tmp;
-   HIMAGELIST imlist;
+   HIMAGELIST imlist, dimlist;
    BITMAP bmi = { 0 };
    TBBUTTON tbButtons[] = {    
    { MAKELONG(0, 0), id, TBSTATE_ENABLED, TBSTYLE_BUTTON, 0L, 0}
@@ -6182,6 +6211,9 @@
       GetObject(hbitmap, sizeof(BITMAP), &bmi);
       imlist = ImageList_Create(bmi.bmWidth, bmi.bmHeight, ILC_COLOR32, 1, 0);
       ImageList_Add(imlist, hbitmap, NULL);
+      dimlist = ImageList_Create(bmi.bmWidth, bmi.bmHeight, ILC_COLOR32, 1, 0);
+      _to_grayscale(hbitmap, bmi.bmWidth, bmi.bmHeight);
+      ImageList_Add(dimlist, hbitmap, NULL);
    }
    else if(icon)
    {
@@ -6191,6 +6223,9 @@
       GetObject(iconinfo.hbmColor, sizeof(BITMAP), &bmi);
       imlist = ImageList_Create(bmi.bmWidth, bmi.bmHeight, ILC_COLOR32 | ILC_MASK, 1, 0);
       ImageList_AddIcon(imlist, icon);
+      dimlist = ImageList_Create(bmi.bmWidth, bmi.bmHeight, ILC_COLOR32 | ILC_MASK, 1, 0);
+      _to_grayscale(iconinfo.hbmColor, bmi.bmWidth, bmi.bmHeight);
+      ImageList_Add(dimlist, iconinfo.hbmColor, iconinfo.hbmMask);
    }
    else
       return 0;
@@ -6204,7 +6239,7 @@
    SendMessage(tmp, TB_SETBUTTONSIZE, 0, MAKELPARAM(bmi.bmWidth, bmi.bmHeight));
    SendMessage(tmp, TB_SETPADDING, 0, 0);
    SendMessage(tmp, TB_SETIMAGELIST, 0, (LPARAM)imlist);
-   SendMessage(tmp, TB_SETDISABLEDIMAGELIST, 0, (LPARAM)imlist);
+   SendMessage(tmp, TB_SETDISABLEDIMAGELIST, 0, (LPARAM)dimlist);
    SendMessage(tmp, TB_ADDBUTTONS, 1, (LONG) &tbButtons);
    
    _create_tooltip(tmp, text);