232 lines
6.0 KiB
C++
232 lines
6.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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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 "nslog.h"
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NS_IMPL_LOG(nsLabelLog, 0)
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#define PRINTF NS_LOG_PRINTF(nsLabelLog)
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#define FLUSH NS_LOG_FLUSH(nsLabelLog)
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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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NS_INIT_REFCNT();
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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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char label[256];
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aText.ToCString(label, 256);
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label[255] = '\0';
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if(mStringView && mStringView->LockLooper())
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{
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mStringView->SetText(label);
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mStringView->UnlockLooper();
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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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// 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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if(mStringView && mStringView->LockLooper())
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{
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aBuffer.SetLength(0);
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aBuffer.AppendWithConversion(mStringView->Text());
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mStringView->UnlockLooper();
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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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// 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(nsRect &r)
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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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// 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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BView *nsLabel::CreateBeOSView()
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{
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return mStringView = new nsStringViewBeOS(this, BRect(0, 0, 0, 0), "", "");
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}
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//-------------------------------------------------------------------------
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// Sub-class of BeOS StringView
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//-------------------------------------------------------------------------
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nsStringViewBeOS::nsStringViewBeOS( nsIWidget *aWidgetWindow, BRect aFrame,
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const char *aName, const char *text, uint32 aResizingMode, uint32 aFlags )
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: BStringView( aFrame, aName, text, aResizingMode, aFlags ),
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nsIWidgetStore( aWidgetWindow )
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{
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}
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