RetroZilla/webshell/tests/viewer/windows/nsLabel.cpp

286 lines
7.9 KiB
C++
Raw Normal View History

2015-10-21 05:03:22 +02:00
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsLabel.h"
#include "nsILabel.h"
#include "nsToolkit.h"
#include "nsColor.h"
#include "nsGUIEvent.h"
#include "nsString.h"
#include "nsStringUtil.h"
#include "nsIFontMetrics.h"
#include "nsIDeviceContext.h"
#include <windows.h>
//-------------------------------------------------------------------------
nsresult
NS_NewLabel(nsILabel** aControl)
{
NS_PRECONDITION(aControl, "null OUT ptr");
if (nsnull == aControl) {
return NS_ERROR_NULL_POINTER;
}
nsLabel* it = new nsLabel;
if (!it) {
return NS_ERROR_OUT_OF_MEMORY;
}
NS_ADDREF(it);
*aControl = (nsILabel*)it;
return NS_OK;
}
NS_IMPL_ADDREF(nsLabel)
NS_IMPL_RELEASE(nsLabel)
//-------------------------------------------------------------------------
//
// nsLabel constructor
//
//-------------------------------------------------------------------------
nsLabel::nsLabel() : nsWindow(), nsILabel()
{
mAlignment = eAlign_Left;
}
//-------------------------------------------------------------------------
//
//
//-------------------------------------------------------------------------
NS_METHOD nsLabel::PreCreateWidget(nsWidgetInitData *aInitData)
{
if (nsnull != aInitData) {
nsLabelInitData* data = (nsLabelInitData *) aInitData;
mAlignment = data->mAlignment;
}
return NS_OK;
}
//-------------------------------------------------------------------------
//
// nsLabel destructor
//
//-------------------------------------------------------------------------
nsLabel::~nsLabel()
{
}
//-------------------------------------------------------------------------
//
// Query interface implementation
//
//-------------------------------------------------------------------------
nsresult nsLabel::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
nsresult result = nsWindow::QueryInterface(aIID, aInstancePtr);
static NS_DEFINE_IID(kILabelIID, NS_ILABEL_IID);
if (result == NS_NOINTERFACE && aIID.Equals(kILabelIID)) {
*aInstancePtr = (void*) ((nsILabel*)this);
NS_ADDREF_THIS();
result = NS_OK;
}
return result;
}
//-------------------------------------------------------------------------
//
// Set this button label
//
//-------------------------------------------------------------------------
NS_METHOD nsLabel::SetAlignment(nsLabelAlignment aAlignment)
{
mAlignment = aAlignment;
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Set this button label
//
//-------------------------------------------------------------------------
NS_METHOD nsLabel::SetLabel(const nsString& aText)
{
VERIFY(::SetWindowText(mWnd, NS_LossyConvertUCS2toASCII(aText).get()));
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Get this button label
//
//-------------------------------------------------------------------------
NS_METHOD nsLabel::GetLabel(nsString& aBuffer)
{
int actualSize = ::GetWindowTextLength(mWnd)+1;
NS_ALLOC_CHAR_BUF(label, 256, actualSize);
::GetWindowText(mWnd, label, actualSize);
aBuffer.SetLength(0);
aBuffer.AppendWithConversion(label);
NS_FREE_CHAR_BUF(label);
return NS_OK;
}
//-------------------------------------------------------------------------
//
// move, paint, resizes message - ignore
//
//-------------------------------------------------------------------------
PRBool nsLabel::OnMove(PRInt32, PRInt32)
{
return PR_FALSE;
}
PRBool nsLabel::OnPaint()
{
//printf("** nsLabel::OnPaint **\n");
return PR_FALSE;
}
PRBool nsLabel::OnResize(nsRect &aWindowRect)
{
return PR_FALSE;
}
//-------------------------------------------------------------------------
//
// return the window class name and initialize the class if needed
//
//-------------------------------------------------------------------------
LPCWSTR nsLabel::WindowClassW()
{
return L"STATIC";
}
//-------------------------------------------------------------------------
//
// return the window class name and initialize the class if needed
//
//-------------------------------------------------------------------------
LPCTSTR nsLabel::WindowClass()
{
return "STATIC";
}
//-------------------------------------------------------------------------
//
// return window styles
//
//-------------------------------------------------------------------------
DWORD nsLabel::WindowStyle()
{
DWORD style = WS_CHILD | WS_CLIPSIBLINGS;
switch (mAlignment) {
case eAlign_Right : style |= SS_RIGHT; break;
case eAlign_Left : style |= SS_LEFT; break;
case eAlign_Center: style |= SS_CENTER;break;
default :
style |= SS_LEFT;
}
return style;
}
//-------------------------------------------------------------------------
//
// return window extended styles
//
//-------------------------------------------------------------------------
DWORD nsLabel::WindowExStyle()
{
return 0;
}
//-------------------------------------------------------------------------
//
// get position/dimensions
//
//-------------------------------------------------------------------------
NS_METHOD nsLabel::GetBounds(nsRect &aRect)
{
return nsWindow::GetBounds(aRect);
}
//-------------------------------------------------------------------------
NS_METHOD nsLabel::GetPreferredSize(PRInt32& aWidth, PRInt32& aHeight)
{
if (nsnull == mContext) {
return NS_ERROR_FAILURE;
}
//nsIFontMetrics * fm = GetFont();;
// mDeviceContext->GetMetricsFor(mFont, &fm);
nsIFontMetrics* metrics;
mContext->GetMetricsFor(*mFont, metrics);
nsString text;
GetLabel(text);
nsIRenderingContext *cx;
mContext->CreateRenderingContext(this, cx);
cx->SetFont(metrics);
nscoord string_height, string_width;
metrics->GetHeight(string_height);
cx->GetWidth(text, string_width);
NS_RELEASE(cx);
NS_RELEASE(metrics);
if (mPreferredWidth != 0) {
aWidth = mPreferredWidth;
} else {
aWidth = string_width+8;
}
if (mPreferredHeight != 0) {
aHeight = mPreferredHeight;
} else {
aHeight = string_height+8;
}
return NS_OK;
}
//-------------------------------------------------------------------------
NS_METHOD nsLabel::SetPreferredSize(PRInt32 aWidth, PRInt32 aHeight)
{
mPreferredWidth = aWidth;
mPreferredHeight = aHeight;
return NS_OK;
}