316 lines
6.7 KiB
C
316 lines
6.7 KiB
C
/*
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** CUTILS.C
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**
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** Common utilities for common controls
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**
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*/
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#include "ctlspriv.h"
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int iDitherCount = 0;
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HBRUSH hbrDither = NULL;
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int nSysColorChanges = 0;
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DWORD rgbFace; // globals used a lot
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DWORD rgbShadow;
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DWORD rgbHilight;
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DWORD rgbFrame;
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int iThumbCount = 0;
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HBITMAP hbmThumb = NULL; // the thumb bitmap
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#define CCS_ALIGN (CCS_TOP|CCS_NOMOVEY|CCS_BOTTOM)
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#if 0
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/* Note that the default alignment is CCS_BOTTOM
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*/
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void FAR PASCAL NewSize(HWND hWnd, int nHeight, LONG style, int left, int top, int width, int height)
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{
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RECT rc, rcWindow, rcBorder;
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/* Resize the window unless the user said not to
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*/
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if (!(style & CCS_NORESIZE))
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{
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/* Calculate the borders around the client area of the status bar
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*/
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GetWindowRect(hWnd, &rcWindow);
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rcWindow.right -= rcWindow.left;
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rcWindow.bottom -= rcWindow.top;
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GetClientRect(hWnd, &rc);
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ClientToScreen(hWnd, (LPPOINT)&rc);
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rcBorder.left = rc.left - rcWindow.left;
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rcBorder.top = rc.top - rcWindow.top ;
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rcBorder.right = rcWindow.right - rc.right - rcBorder.left;
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rcBorder.bottom = rcWindow.bottom - rc.bottom - rcBorder.top ;
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nHeight += rcBorder.top + rcBorder.bottom;
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/* Check whether to align to the parent window
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*/
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if (style & CCS_NOPARENTALIGN)
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{
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/* Check out whether this bar is top aligned or bottom aligned
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*/
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switch ((style&CCS_ALIGN))
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{
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case CCS_TOP:
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case CCS_NOMOVEY:
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break;
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default:
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top = top + height - nHeight;
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}
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}
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else
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{
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/* It is assumed there is a parent by default
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*/
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GetClientRect(GetParent(hWnd), &rc);
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/* Don't forget to account for the borders
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*/
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left = -rcBorder.left;
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width = rc.right + rcBorder.left + rcBorder.right;
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if ((style&CCS_ALIGN) == CCS_TOP)
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top = -rcBorder.top;
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else if ((style&CCS_ALIGN) != CCS_NOMOVEY)
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top = rc.bottom - nHeight + rcBorder.bottom;
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}
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if (!(GetWindowLong(hWnd, GWL_STYLE) & CCS_NODIVIDER))
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{
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// make room for divider
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top += 2 * GetSystemMetrics(SM_CYBORDER);
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}
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SetWindowPos(hWnd, NULL, left, top, width, nHeight, SWP_NOZORDER);
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}
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}
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#endif
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static HBITMAP NEAR PASCAL CreateDitherBitmap()
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{
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PBITMAPINFO pbmi;
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HBITMAP hbm;
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HDC hdc;
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int i;
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long patGray[8];
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DWORD rgb;
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pbmi = (PBITMAPINFO)LocalAlloc(LPTR, sizeof(BITMAPINFOHEADER) + (sizeof(RGBQUAD) * 16));
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if (!pbmi)
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return NULL;
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pbmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
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pbmi->bmiHeader.biWidth = 8;
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pbmi->bmiHeader.biHeight = 8;
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pbmi->bmiHeader.biPlanes = 1;
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pbmi->bmiHeader.biBitCount = 1;
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pbmi->bmiHeader.biCompression = BI_RGB;
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rgb = GetSysColor(COLOR_BTNFACE);
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pbmi->bmiColors[0].rgbBlue = GetBValue(rgb);
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pbmi->bmiColors[0].rgbGreen = GetGValue(rgb);
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pbmi->bmiColors[0].rgbRed = GetRValue(rgb);
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pbmi->bmiColors[0].rgbReserved = 0;
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rgb = GetSysColor(COLOR_BTNHIGHLIGHT);
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pbmi->bmiColors[1].rgbBlue = GetBValue(rgb);
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pbmi->bmiColors[1].rgbGreen = GetGValue(rgb);
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pbmi->bmiColors[1].rgbRed = GetRValue(rgb);
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pbmi->bmiColors[1].rgbReserved = 0;
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/* initialize the brushes */
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for (i = 0; i < 8; i++)
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if (i & 1)
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patGray[i] = 0xAAAA5555L; // 0x11114444L; // lighter gray
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else
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patGray[i] = 0x5555AAAAL; // 0x11114444L; // lighter gray
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hdc = GetDC(NULL);
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hbm = CreateDIBitmap(hdc, &pbmi->bmiHeader, CBM_INIT, patGray, pbmi, DIB_RGB_COLORS);
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ReleaseDC(NULL, hdc);
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LocalFree(pbmi);
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return hbm;
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}
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/*---------------------------------------------------------------------------
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MySetObjectOwner
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Purpose: Call SetObjectOwner in GDI, eliminating "<Object> not released"
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error messages when an app terminates.
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Returns: Yep
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---------------------------------------------------------------------------*/
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static void MySetObjectOwner(HANDLE hObject)
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{
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VOID (FAR PASCAL *lpSetObjOwner)(HANDLE, HANDLE);
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HMODULE hMod;
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hMod = GetModuleHandle("GDI");
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if (hMod)
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{
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(FARPROC)lpSetObjOwner = GetProcAddress(hMod, MAKEINTRESOURCE(461));
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if (lpSetObjOwner)
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{
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(lpSetObjOwner)(hObject, hInst);
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}
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}
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}
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// initialize the hbrDither global brush
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// Call this with bIgnoreCount == TRUE if you just want to update the
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// current dither brush.
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BOOL FAR PASCAL CreateDitherBrush(BOOL bIgnoreCount)
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{
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HBITMAP hbmGray;
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HBRUSH hbrSave;
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if (bIgnoreCount && !iDitherCount)
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{
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return TRUE;
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}
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if (iDitherCount>0 && !bIgnoreCount)
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{
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iDitherCount++;
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return TRUE;
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}
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hbmGray = CreateDitherBitmap();
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if (hbmGray)
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{
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hbrSave = hbrDither;
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hbrDither = CreatePatternBrush(hbmGray);
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DeleteObject(hbmGray);
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if (hbrDither)
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{
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MySetObjectOwner(hbrDither);
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if (hbrSave)
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{
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DeleteObject(hbrSave);
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}
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if (!bIgnoreCount)
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{
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iDitherCount = 1;
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}
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return TRUE;
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}
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else
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{
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hbrDither = hbrSave;
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}
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}
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return FALSE;
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}
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BOOL FAR PASCAL FreeDitherBrush(void)
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{
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iDitherCount--;
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if (iDitherCount > 0)
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return FALSE;
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if (hbrDither)
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DeleteObject(hbrDither);
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hbrDither = NULL;
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return TRUE;
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}
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// initialize the hbmThumb global bitmap
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// Call this with bIgnoreCount == TRUE if you just want to update the
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// current bitmap.
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void FAR PASCAL CreateThumb(BOOL bIgnoreCount)
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{
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HBITMAP hbmSave;
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if (bIgnoreCount && !iThumbCount)
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{
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return;
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}
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if (iThumbCount && !bIgnoreCount)
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{
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++iThumbCount;
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return;
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}
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hbmSave = hbmThumb;
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hbmThumb = CreateMappedBitmap(hInst, IDB_THUMB, CMB_MASKED, NULL, 0);
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if (hbmThumb)
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{
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if (hbmSave)
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{
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DeleteObject(hbmSave);
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}
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if (!bIgnoreCount)
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{
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iThumbCount = 1;
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}
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}
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else
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{
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hbmThumb = hbmSave;
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}
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}
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void FAR PASCAL DestroyThumb(void)
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{
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iThumbCount--;
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if (iThumbCount <= 0)
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{
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if (hbmThumb)
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{
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DeleteObject(hbmThumb);
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}
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hbmThumb = NULL;
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iThumbCount = 0;
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}
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}
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// Note that the trackbar will pass in NULL for pTBState, because it
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// just wants the dither brush to be updated.
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void FAR PASCAL CheckSysColors(void)
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{
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static COLORREF rgbSaveFace = 0xffffffffL,
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rgbSaveShadow = 0xffffffffL,
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rgbSaveHilight = 0xffffffffL,
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rgbSaveFrame = 0xffffffffL;
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rgbFace = GetSysColor(COLOR_BTNFACE);
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rgbShadow = GetSysColor(COLOR_BTNSHADOW);
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rgbHilight = GetSysColor(COLOR_BTNHIGHLIGHT);
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rgbFrame = GetSysColor(COLOR_WINDOWFRAME);
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if (rgbSaveFace!=rgbFace || rgbSaveShadow!=rgbShadow
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|| rgbSaveHilight!=rgbHilight || rgbSaveFrame!=rgbFrame)
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{
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++nSysColorChanges;
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// Update the brush for pushed-in buttons
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CreateDitherBrush(TRUE);
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CreateThumb(TRUE);
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rgbSaveFace = rgbFace;
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rgbSaveShadow = rgbShadow;
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rgbSaveHilight = rgbHilight;
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rgbSaveFrame = rgbFrame;
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}
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}
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