360 lines
10 KiB
C++
360 lines
10 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 License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "nsComboBox.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 <windows.h>
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#include "nsILookAndFeel.h"
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#include "nsWidgetsCID.h"
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#include "nsIComponentManager.h"
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#include "nsIDeviceContext.h"
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#include "nsIFontMetrics.h"
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static NS_DEFINE_IID(kLookAndFeelCID, NS_LOOKANDFEEL_CID);
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static NS_DEFINE_IID(kILookAndFeelIID, NS_ILOOKANDFEEL_IID);
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NS_IMPL_ADDREF(nsComboBox)
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NS_IMPL_RELEASE(nsComboBox)
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//-------------------------------------------------------------------------
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//
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// nsComboBox constructor
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//
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//-------------------------------------------------------------------------
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nsComboBox::nsComboBox() : nsWindow(), nsIListWidget(), nsIComboBox()
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{
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NS_INIT_REFCNT();
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mBackground = NS_RGB(124, 124, 124);
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mDropDownHeight = 60; // Default to 60 pixels for drop-down list height
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}
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//-------------------------------------------------------------------------
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//
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// destructor
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//
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//-------------------------------------------------------------------------
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NS_METHOD nsComboBox::AddItemAt(nsString &aItem, PRInt32 aPosition)
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{
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NS_ALLOC_STR_BUF(val, aItem, 256);
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::SendMessage(mWnd, CB_ADDSTRING, (int)aPosition, (LPARAM)(LPCTSTR)val);
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NS_FREE_STR_BUF(val);
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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//
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// Finds an item at a postion
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//
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//-------------------------------------------------------------------------
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PRInt32 nsComboBox::FindItem(nsString &aItem, PRInt32 aStartPos)
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{
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NS_ALLOC_STR_BUF(val, aItem, 256);
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int index = ::SendMessage(mWnd, CB_FINDSTRINGEXACT, (int)aStartPos, (LPARAM)(LPCTSTR)val);
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NS_FREE_STR_BUF(val);
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return index;
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}
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//-------------------------------------------------------------------------
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//
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// CountItems - Get Item Count
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//
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//-------------------------------------------------------------------------
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PRInt32 nsComboBox::GetItemCount()
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{
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return (PRInt32)::SendMessage(mWnd, CB_GETCOUNT, (int)0, (LPARAM)0);
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}
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//-------------------------------------------------------------------------
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//
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// Removes an Item at a specified location
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//
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//-------------------------------------------------------------------------
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PRBool nsComboBox::RemoveItemAt(PRInt32 aPosition)
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{
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int status = ::SendMessage(mWnd, CB_DELETESTRING, (int)aPosition, (LPARAM)(LPCTSTR)0);
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return (status != CB_ERR?PR_TRUE:PR_FALSE);
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}
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//-------------------------------------------------------------------------
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//
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// Removes an Item at a specified location
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//
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//-------------------------------------------------------------------------
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PRBool nsComboBox::GetItemAt(nsString& anItem, PRInt32 aPosition)
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{
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PRBool result = PR_FALSE;
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int len = ::SendMessage(mWnd, CB_GETLBTEXTLEN, (int)aPosition, (LPARAM)0);
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if (len != CB_ERR) {
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char * str = new char[len+1];
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anItem.SetLength(0);
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int status = ::SendMessage(mWnd, CB_GETLBTEXT, (int)aPosition, (LPARAM)(LPCTSTR)str);
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if (status != CB_ERR) {
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anItem.Append(str);
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result = PR_TRUE;
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}
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delete str;
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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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// Gets the selected of selected item
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//
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//-------------------------------------------------------------------------
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NS_METHOD nsComboBox::GetSelectedItem(nsString& aItem)
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{
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int index = ::SendMessage(mWnd, CB_GETCURSEL, (int)0, (LPARAM)0);
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GetItemAt(aItem, index);
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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//
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// Gets the list of selected otems
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//
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//-------------------------------------------------------------------------
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PRInt32 nsComboBox::GetSelectedIndex()
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{
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return ::SendMessage(mWnd, CB_GETCURSEL, (int)0, (LPARAM)0);
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}
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//-------------------------------------------------------------------------
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//
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// SelectItem
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//
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//-------------------------------------------------------------------------
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NS_METHOD nsComboBox::SelectItem(PRInt32 aPosition)
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{
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::SendMessage(mWnd, CB_SETCURSEL, (int)aPosition, (LPARAM)0);
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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//
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// Deselect
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//
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//-------------------------------------------------------------------------
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NS_METHOD nsComboBox::Deselect()
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{
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::SendMessage(mWnd, CB_SETCURSEL, (WPARAM)-1, (LPARAM)0);
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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//
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// destructor
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//
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//-------------------------------------------------------------------------
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nsComboBox::~nsComboBox()
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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 nsComboBox::QueryInterface(const nsIID& aIID, void** aInstancePtr)
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{
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static NS_DEFINE_IID(kInsComboBoxIID, NS_ICOMBOBOX_IID);
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static NS_DEFINE_IID(kInsListWidgetIID, NS_ILISTWIDGET_IID);
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if (aIID.Equals(kInsComboBoxIID)) {
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*aInstancePtr = (void*) ((nsIComboBox*)this);
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NS_ADDREF_THIS();
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return NS_OK;
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}
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else if (aIID.Equals(kInsListWidgetIID)) {
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*aInstancePtr = (void*) ((nsIListWidget*)this);
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NS_ADDREF_THIS();
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return NS_OK;
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}
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return nsWindow::QueryInterface(aIID,aInstancePtr);
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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 nsComboBox::OnMove(PRInt32, PRInt32)
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{
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return PR_FALSE;
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}
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PRBool nsComboBox::OnPaint()
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{
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return PR_FALSE;
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}
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PRBool nsComboBox::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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LPCTSTR nsComboBox::WindowClass()
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{
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return("COMBOBOX");
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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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DWORD nsComboBox::WindowStyle()
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{
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return (CBS_DROPDOWNLIST | WS_BORDER | WS_CHILD | WS_CLIPSIBLINGS | WS_VSCROLL);
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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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DWORD nsComboBox::WindowExStyle()
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{
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return WS_EX_CLIENTEDGE;
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}
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//-------------------------------------------------------------------------
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//
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// Cache the drop down list height in mDropDownHeight
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//
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//-------------------------------------------------------------------------
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NS_METHOD nsComboBox::PreCreateWidget(nsWidgetInitData *aInitData)
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{
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nsComboBoxInitData* comboData = (nsComboBoxInitData*)aInitData;
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mDropDownHeight = comboData->mDropDownHeight;
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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//
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// Modify the height passed to create and resize to be
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// the combo box drop down list height. (Note: Windows uses
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// the height of the window to specify the drop-down list size,
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// not the height of combobox text area.
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//
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//-------------------------------------------------------------------------
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PRInt32 nsComboBox::GetHeight(PRInt32 aProposedHeight)
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{
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return(mDropDownHeight);
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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 nsComboBox::GetBounds(nsRect &aRect)
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{
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nsWindow::GetNonClientBounds(aRect);
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return NS_OK;
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}
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/**
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* Renders the TextWidget for Printing
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*
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**/
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NS_METHOD nsComboBox::Paint(nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect)
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{
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nsBaseWidget::Paint(aRenderingContext, aDirtyRect);
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/*nsRect rect;
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GetBoundsAppUnits(rect, aTwipsConversion);
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aRenderingContext.SetColor(NS_RGB(0,0,0));
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nscolor bgColor = NS_RGB(255,255,255);
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nscolor fgColor = NS_RGB(0,0,0);
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nscolor hltColor = NS_RGB(240,240,240);
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nscolor sdwColor = NS_RGB(128,128,128);
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nsILookAndFeel * lookAndFeel;
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if (NS_OK == nsComponentManager::CreateInstance(kLookAndFeelCID, nsnull, kILookAndFeelIID, (void**)&lookAndFeel)) {
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lookAndFeel->GetColor(nsILookAndFeel::eColor_WidgetBackground, bgColor);
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lookAndFeel->GetColor(nsILookAndFeel::eColor_WidgetForeground, fgColor);
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lookAndFeel->GetColor(nsILookAndFeel::eColor_Widget3DShadow, sdwColor);
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lookAndFeel->GetColor(nsILookAndFeel::eColor_Widget3DHighlight, hltColor);
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}
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nsIDeviceContext * context;
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//nsDrawingSurface surface;
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aRenderingContext.GetDeviceContext(context);
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//context->GetDrawingSurface(aRenderingContext, surface);
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//HDC the_hdc = ((nsDrawingSurfaceWin *)&surface)->mDC;
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//::SendMessage(mWnd, WM_PAINT, (WPARAM)the_hdc, NULL);
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// shrink by one pixel
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nscoord onePixel = nscoord((aTwipsConversion+0.6F));
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nscoord twoPixels = onePixel*2;
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nsString text("(ComboBox)");
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//GetSelectedItem(text);
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aRenderingContext.SetColor(bgColor);
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aRenderingContext.FillRect(rect);
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aRenderingContext.SetColor(NS_RGB(0,0,0));
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aRenderingContext.DrawRect(rect);
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aRenderingContext.SetFont(*mFont);
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nscoord textWidth;
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nscoord textHeight;
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aRenderingContext.GetWidth(text, textWidth);
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nsIFontMetrics* metrics;
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context->GetMetricsFor(*mFont, metrics);
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metrics->GetMaxAscent(textHeight);
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nscoord x = (twoPixels * 2) + rect.x;
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nscoord y = ((rect.height - textHeight) / 2) + rect.y;
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//aRenderingContext.DrawString(text, x, y);
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*/
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return NS_OK;
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}
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