2002-08-23 02:03:52 +04:00
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsLabel.h"
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#include "nsILabel.h"
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#include "nsToolkit.h"
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#include "nsColor.h"
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#include "nsGUIEvent.h"
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#include "nsString.h"
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#include "nsStringUtil.h"
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#include "nsIFontMetrics.h"
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#include "nsIDeviceContext.h"
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#include <os2.h>
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//-------------------------------------------------------------------------
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nsresult
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NS_NewLabel(nsILabel** aControl)
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{
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NS_PRECONDITION(aControl, "null OUT ptr");
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if (nsnull == aControl) {
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return NS_ERROR_NULL_POINTER;
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}
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nsLabel* it = new nsLabel;
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if (!it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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NS_ADDREF(it);
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*aControl = (nsILabel*)it;
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return NS_OK;
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}
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NS_IMPL_ADDREF(nsLabel)
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NS_IMPL_RELEASE(nsLabel)
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//-------------------------------------------------------------------------
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//
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// nsLabel constructor
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//
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//-------------------------------------------------------------------------
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nsLabel::nsLabel() : nsWindow(), nsILabel()
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{
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mAlignment = eAlign_Left;
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}
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//-------------------------------------------------------------------------
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//
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//
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//-------------------------------------------------------------------------
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NS_METHOD nsLabel::PreCreateWidget(nsWidgetInitData *aInitData)
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{
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if (nsnull != aInitData) {
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nsLabelInitData* data = (nsLabelInitData *) aInitData;
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mAlignment = data->mAlignment;
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}
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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//
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// nsLabel destructor
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//
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//-------------------------------------------------------------------------
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nsLabel::~nsLabel()
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{
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}
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//-------------------------------------------------------------------------
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//
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// Query interface implementation
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//
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//-------------------------------------------------------------------------
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nsresult nsLabel::QueryInterface(const nsIID& aIID, void** aInstancePtr)
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{
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nsresult result = nsWindow::QueryInterface(aIID, aInstancePtr);
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static NS_DEFINE_IID(kILabelIID, NS_ILABEL_IID);
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if (result == NS_NOINTERFACE && aIID.Equals(kILabelIID)) {
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*aInstancePtr = (void*) ((nsILabel*)this);
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NS_ADDREF_THIS();
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result = NS_OK;
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}
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return result;
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}
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//-------------------------------------------------------------------------
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//
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// Set this button label
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//
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//-------------------------------------------------------------------------
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NS_METHOD nsLabel::SetAlignment(nsLabelAlignment aAlignment)
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{
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mAlignment = aAlignment;
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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//
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// Set this button label
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//
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//-------------------------------------------------------------------------
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NS_METHOD nsLabel::SetLabel(const nsString& aText)
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{
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WinSetWindowText(mWnd, NS_LossyConvertUCS2toASCII(aText).get());
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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//
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// Get this button label
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//
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//-------------------------------------------------------------------------
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NS_METHOD nsLabel::GetLabel(nsString& aBuffer)
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{
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int actualSize = ::WinQueryWindowTextLength(mWnd)+1;
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NS_ALLOC_CHAR_BUF(label, 256, actualSize);
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::WinQueryWindowText(mWnd, actualSize, label);
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aBuffer.SetLength(0);
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aBuffer.AppendWithConversion(label);
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NS_FREE_CHAR_BUF(label);
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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//
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// move, paint, resizes message - ignore
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//
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//-------------------------------------------------------------------------
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PRBool nsLabel::OnMove(PRInt32, PRInt32)
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{
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return PR_FALSE;
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}
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PRBool nsLabel::OnPaint()
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{
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//printf("** nsLabel::OnPaint **\n");
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return PR_FALSE;
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}
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PRBool nsLabel::OnResize(nsRect &aWindowRect)
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{
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return PR_FALSE;
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}
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//-------------------------------------------------------------------------
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//
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// return the window class name and initialize the class if needed
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//
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//-------------------------------------------------------------------------
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PCSZ nsLabel::WindowClass()
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{
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return WC_STATIC_STRING;
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}
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//-------------------------------------------------------------------------
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//
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// return window styles
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//
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//-------------------------------------------------------------------------
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ULONG nsLabel::WindowStyle()
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{
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2002-11-06 18:58:05 +03:00
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ULONG style = WS_CLIPSIBLINGS | SS_TEXT;
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2002-08-23 02:03:52 +04:00
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switch (mAlignment) {
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case eAlign_Right : style |= DT_RIGHT; break;
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case eAlign_Left : style |= DT_LEFT; break;
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case eAlign_Center: style |= DT_CENTER;break;
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default :
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style |= DT_LEFT;
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}
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return style;
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}
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//-------------------------------------------------------------------------
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//
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// return window extended styles
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//
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//-------------------------------------------------------------------------
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ULONG nsLabel::WindowExStyle()
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{
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return 0;
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}
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//-------------------------------------------------------------------------
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//
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// get position/dimensions
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//
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//-------------------------------------------------------------------------
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NS_METHOD nsLabel::GetBounds(nsRect &aRect)
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{
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return nsWindow::GetBounds(aRect);
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}
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//-------------------------------------------------------------------------
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NS_METHOD nsLabel::GetPreferredSize(PRInt32& aWidth, PRInt32& aHeight)
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{
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if (nsnull == mContext) {
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return NS_ERROR_FAILURE;
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}
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//nsIFontMetrics * fm = GetFont();;
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// mDeviceContext->GetMetricsFor(mFont, &fm);
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nsIFontMetrics* metrics;
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mContext->GetMetricsFor(*mFont, metrics);
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nsString text;
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GetLabel(text);
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nsIRenderingContext *cx;
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mContext->CreateRenderingContext(this, cx);
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cx->SetFont(metrics);
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nscoord string_height, string_width;
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metrics->GetHeight(string_height);
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cx->GetWidth(text, string_width);
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NS_RELEASE(cx);
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NS_RELEASE(metrics);
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if (mPreferredWidth != 0) {
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aWidth = mPreferredWidth;
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} else {
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aWidth = string_width+8;
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}
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if (mPreferredHeight != 0) {
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aHeight = mPreferredHeight;
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} else {
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aHeight = string_height+8;
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}
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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NS_METHOD nsLabel::SetPreferredSize(PRInt32 aWidth, PRInt32 aHeight)
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{
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mPreferredWidth = aWidth;
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mPreferredHeight = aHeight;
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return NS_OK;
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}
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