public Point computeSize(int wHint, int hHint, boolean changed) {
checkWidget();
if (wHint != SWT.DEFAULT && wHint < 0) wHint = 0;
if (hHint != SWT.DEFAULT && hHint < 0) hHint = 0;
int width, height;
if (OS.COMCTL32_MAJOR >= 6) {
int /*long*/ hDC = OS.GetDC(handle);
int /*long*/ newFont = OS.SendMessage(handle, OS.WM_GETFONT, 0, 0);
int /*long*/ oldFont = OS.SelectObject(hDC, newFont);
if (text.length() > 0) {
TCHAR buffer = new TCHAR(getCodePage(), parse(text), false);
RECT rect = new RECT();
int flags = OS.DT_CALCRECT | OS.DT_NOPREFIX;
if (wHint != SWT.DEFAULT) {
flags |= OS.DT_WORDBREAK;
rect.right = wHint;
}
OS.DrawText(hDC, buffer, buffer.length(), rect, flags);
width = rect.right - rect.left;
height = rect.bottom;
} else {
TEXTMETRIC lptm = OS.IsUnicode ? (TEXTMETRIC) new TEXTMETRICW() : new TEXTMETRICA();
OS.GetTextMetrics(hDC, lptm);
width = 0;
height = lptm.tmHeight;
}
if (newFont != 0) OS.SelectObject(hDC, oldFont);
OS.ReleaseDC(handle, hDC);
} else {
int layoutWidth = layout.getWidth();
// TEMPORARY CODE
if (wHint == 0) {
layout.setWidth(1);
Rectangle rect = layout.getBounds();
width = 0;
height = rect.height;
} else {
layout.setWidth(wHint);
Rectangle rect = layout.getBounds();
width = rect.width;
height = rect.height;
}
layout.setWidth(layoutWidth);
}
if (wHint != SWT.DEFAULT) width = wHint;
if (hHint != SWT.DEFAULT) height = hHint;
int border = getBorderWidth();
width += border * 2;
height += border * 2;
return new Point(width, height);
}
static {
if (OS.COMCTL32_MAJOR >= 6) {
WNDCLASS lpWndClass = new WNDCLASS();
OS.GetClassInfo(0, LinkClass, lpWndClass);
LinkProc = lpWndClass.lpfnWndProc;
/*
* Feature in Windows. The SysLink window class
* does not include CS_DBLCLKS. This means that these
* controls will not get double click messages such as
* WM_LBUTTONDBLCLK. The fix is to register a new
* window class with CS_DBLCLKS.
*
* NOTE: Screen readers look for the exact class name
* of the control in order to provide the correct kind
* of assistance. Therefore, it is critical that the
* new window class have the same name. It is possible
* to register a local window class with the same name
* as a global class. Since bits that affect the class
* are being changed, it is possible that other native
* code, other than SWT, could create a control with
* this class name, and fail unexpectedly.
*/
int /*long*/ hInstance = OS.GetModuleHandle(null);
int /*long*/ hHeap = OS.GetProcessHeap();
lpWndClass.hInstance = hInstance;
lpWndClass.style &= ~OS.CS_GLOBALCLASS;
lpWndClass.style |= OS.CS_DBLCLKS;
int byteCount = LinkClass.length() * TCHAR.sizeof;
int /*long*/ lpszClassName = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, byteCount);
OS.MoveMemory(lpszClassName, LinkClass, byteCount);
lpWndClass.lpszClassName = lpszClassName;
OS.RegisterClass(lpWndClass);
OS.HeapFree(hHeap, 0, lpszClassName);
} else {
LinkProc = 0;
}
}