зеркало из https://github.com/mozilla/gecko-dev.git
1048 строки
33 KiB
C++
1048 строки
33 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 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 Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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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 MPL, 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 MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsIWidget_h__
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#define nsIWidget_h__
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#include "nsISupports.h"
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#include "nsColor.h"
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#include "nsIMouseListener.h"
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#include "nsIMenuListener.h"
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#include "nsCoord.h"
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#include "prthread.h"
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#include "nsEvent.h"
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#include "nsCOMPtr.h"
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// forward declarations
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class nsIAppShell;
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class nsIToolkit;
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class nsIFontMetrics;
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class nsIToolkit;
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class nsIRenderingContext;
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class nsIEnumerator;
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class nsIDeviceContext;
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class nsIRegion;
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struct nsRect;
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struct nsFont;
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class nsIMenuBar;
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class nsIEventListener;
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class nsIRollupListener;
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class nsGUIEvent;
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struct nsColorMap;
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class imgIContainer;
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/**
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* Callback function that processes events.
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* The argument is actually a subtype (subclass) of nsEvent which carries
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* platform specific information about the event. Platform specific code knows
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* how to deal with it.
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* The return value determines whether or not the default action should take place.
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*/
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typedef nsEventStatus (*PR_CALLBACK EVENT_CALLBACK)(nsGUIEvent *event);
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/**
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* Flags for the getNativeData function.
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* See getNativeData()
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*/
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#define NS_NATIVE_WINDOW 0
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#define NS_NATIVE_GRAPHIC 1
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#define NS_NATIVE_COLORMAP 2
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#define NS_NATIVE_WIDGET 3
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#define NS_NATIVE_DISPLAY 4
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#define NS_NATIVE_REGION 5
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#define NS_NATIVE_OFFSETX 6
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#define NS_NATIVE_OFFSETY 7
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#define NS_NATIVE_PLUGIN_PORT 8
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#define NS_NATIVE_SCREEN 9
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#define NS_NATIVE_SHELLWIDGET 10 // Get the shell GtkWidget
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// {18032AD5-B265-11d1-AA2A-000000000000}
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#define NS_IWIDGET_IID \
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{ 0x18032ad5, 0xb265, 0x11d1, \
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{ 0xaa, 0x2a, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 } }
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// Hide the native window systems real window type so as to avoid
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// including native window system types and api's. This is necessary
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// to ensure cross-platform code.
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typedef void* nsNativeWidget;
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/**
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* Border styles
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*/
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enum nsWindowType { // Don't alter previously encoded enum values - 3rd party apps may look at these
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// default top level window
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eWindowType_toplevel,
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// top level window but usually handled differently by the OS
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eWindowType_dialog,
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// used for combo boxes, etc
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eWindowType_popup,
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// child windows (contained inside a window on the desktop (has no border))
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eWindowType_child,
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// windows that are invisible or offscreen
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eWindowType_invisible,
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// plugin window
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eWindowType_plugin,
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// java plugin window
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eWindowType_java,
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// MacOSX sheet (special dialog class)
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eWindowType_sheet
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};
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enum nsBorderStyle
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{
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// no border, titlebar, etc.. opposite of all
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eBorderStyle_none = 0,
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// all window decorations
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eBorderStyle_all = 1 << 0,
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// enables the border on the window. these are only for decoration and are not resize hadles
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eBorderStyle_border = 1 << 1,
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// enables the resize handles for the window. if this is set, border is implied to also be set
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eBorderStyle_resizeh = 1 << 2,
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// enables the titlebar for the window
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eBorderStyle_title = 1 << 3,
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// enables the window menu button on the title bar. this being on should force the title bar to display
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eBorderStyle_menu = 1 << 4,
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// enables the minimize button so the user can minimize the window.
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// turned off for tranient windows since they can not be minimized separate from their parent
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eBorderStyle_minimize = 1 << 5,
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// enables the maxmize button so the user can maximize the window
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eBorderStyle_maximize = 1 << 6,
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// show the close button
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eBorderStyle_close = 1 << 7,
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// whatever the OS wants... i.e. don't do anything
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eBorderStyle_default = -1
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};
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/**
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* Cursor types.
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*/
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enum nsCursor { ///(normal cursor, usually rendered as an arrow)
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eCursor_standard,
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///(system is busy, usually rendered as a hourglass or watch)
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eCursor_wait,
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///(Selecting something, usually rendered as an IBeam)
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eCursor_select,
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///(can hyper-link, usually rendered as a human hand)
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eCursor_hyperlink,
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///(north/south/west/east edge sizing)
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eCursor_n_resize,
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eCursor_s_resize,
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eCursor_w_resize,
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eCursor_e_resize,
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///(corner sizing)
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eCursor_nw_resize,
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eCursor_se_resize,
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eCursor_ne_resize,
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eCursor_sw_resize,
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eCursor_crosshair,
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eCursor_move,
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eCursor_help,
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eCursor_copy, // CSS3
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eCursor_alias,
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eCursor_context_menu,
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eCursor_cell,
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eCursor_grab,
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eCursor_grabbing,
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eCursor_spinning,
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eCursor_zoom_in,
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eCursor_zoom_out,
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eCursor_not_allowed,
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eCursor_col_resize,
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eCursor_row_resize,
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eCursor_no_drop,
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eCursor_vertical_text,
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eCursor_all_scroll,
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eCursor_nesw_resize,
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eCursor_nwse_resize,
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eCursor_ns_resize,
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eCursor_ew_resize,
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// This one better be the last one in this list.
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eCursorCount
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};
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enum nsContentType {
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eContentTypeInherit = -1,
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eContentTypeUI = 0,
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eContentTypeContent = 1,
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eContentTypeContentFrame = 2
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};
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enum nsTopLevelWidgetZPlacement { // for PlaceBehind()
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eZPlacementBottom = 0, // bottom of the window stack
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eZPlacementBelow, // just below another widget
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eZPlacementTop // top of the window stack
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};
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/**
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* Basic struct for widget initialization data.
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* @see Create member function of nsIWidget
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*/
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struct nsWidgetInitData {
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nsWidgetInitData()
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: clipChildren(PR_FALSE),
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clipSiblings(PR_FALSE),
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mDropShadow(PR_FALSE),
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mListenForResizes(PR_FALSE),
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mWindowType(eWindowType_child),
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mBorderStyle(eBorderStyle_default),
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mContentType(eContentTypeInherit),
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mUnicode(PR_TRUE)
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{
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}
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// when painting exclude area occupied by child windows and sibling windows
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PRPackedBool clipChildren, clipSiblings, mDropShadow;
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PRPackedBool mListenForResizes;
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nsWindowType mWindowType;
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nsBorderStyle mBorderStyle;
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nsContentType mContentType; // Exposed so screen readers know what's UI
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PRPackedBool mUnicode;
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};
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/**
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* The base class for all the widgets. It provides the interface for
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* all basic and necessary functionality.
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*/
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class nsIWidget : public nsISupports {
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public:
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NS_DEFINE_STATIC_IID_ACCESSOR(NS_IWIDGET_IID)
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nsIWidget()
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: mLastChild(nsnull)
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, mPrevSibling(nsnull)
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{}
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/**
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* Create and initialize a widget.
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*
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* The widget represents a window that can be drawn into. It also is the
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* base class for user-interface widgets such as buttons and text boxes.
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*
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* All the arguments can be NULL in which case a top level window
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* with size 0 is created. The event callback function has to be
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* provided only if the caller wants to deal with the events this
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* widget receives. The event callback is basically a preprocess
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* hook called synchronously. The return value determines whether
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* the event goes to the default window procedure or it is hidden
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* to the os. The assumption is that if the event handler returns
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* false the widget does not see the event. The widget should not
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* automatically clear the window to the background color. The
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* calling code must handle paint messages and clear the background
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* itself.
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*
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* aInitData cannot be eWindowType_popup here; popups cannot be
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* hooked into the nsIWidget hierarchy.
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*
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* @param parent or null if it's a top level window
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* @param aRect the widget dimension
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* @param aHandleEventFunction the event handler callback function
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* @param aContext
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* @param aAppShell the parent application shell. If nsnull,
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* the parent window's application shell will be used.
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* @param aToolkit
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* @param aInitData data that is used for widget initialization
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*
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*/
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NS_IMETHOD Create(nsIWidget *aParent,
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const nsRect &aRect,
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EVENT_CALLBACK aHandleEventFunction,
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nsIDeviceContext *aContext,
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nsIAppShell *aAppShell = nsnull,
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nsIToolkit *aToolkit = nsnull,
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nsWidgetInitData *aInitData = nsnull) = 0;
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/**
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* Create and initialize a widget with a native window parent
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*
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* The widget represents a window that can be drawn into. It also is the
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* base class for user-interface widgets such as buttons and text boxes.
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*
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* All the arguments can be NULL in which case a top level window
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* with size 0 is created. The event callback function has to be
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* provided only if the caller wants to deal with the events this
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* widget receives. The event callback is basically a preprocess
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* hook called synchronously. The return value determines whether
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* the event goes to the default window procedure or it is hidden
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* to the os. The assumption is that if the event handler returns
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* false the widget does not see the event.
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*
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* @param aParent native window.
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* @param aRect the widget dimension
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* @param aHandleEventFunction the event handler callback function
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*/
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NS_IMETHOD Create(nsNativeWidget aParent,
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const nsRect &aRect,
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EVENT_CALLBACK aHandleEventFunction,
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nsIDeviceContext *aContext,
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nsIAppShell *aAppShell = nsnull,
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nsIToolkit *aToolkit = nsnull,
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nsWidgetInitData *aInitData = nsnull) = 0;
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/**
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* Accessor functions to get and set the client data associated with the
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* widget.
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*/
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//@{
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NS_IMETHOD GetClientData(void*& aClientData) = 0;
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NS_IMETHOD SetClientData(void* aClientData) = 0;
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//@}
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/**
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* Close and destroy the internal native window.
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* This method does not delete the widget.
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*/
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NS_IMETHOD Destroy(void) = 0;
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/**
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* Reparent a widget
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*
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* Change the widgets parent
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*
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* @param aNewParent new parent
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*/
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NS_IMETHOD SetParent(nsIWidget* aNewParent) = 0;
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/**
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* Return the parent Widget of this Widget or nsnull if this is a
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* top level window
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*
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* @return the parent widget or nsnull if it does not have a parent
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*
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*/
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virtual nsIWidget* GetParent(void) = 0;
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/**
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* Return the first child of this widget. Will return null if
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* there are no children.
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*/
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nsIWidget* GetFirstChild() const {
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return mFirstChild;
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}
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/**
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* Return the last child of this widget. Will return null if
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* there are no children.
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*/
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nsIWidget* GetLastChild() const {
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return mLastChild;
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}
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/**
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* Return the next sibling of this widget
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*/
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nsIWidget* GetNextSibling() const {
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return mNextSibling;
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}
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/**
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* Set the next sibling of this widget
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*/
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void SetNextSibling(nsIWidget* aSibling) {
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mNextSibling = aSibling;
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}
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/**
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* Return the previous sibling of this widget
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*/
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nsIWidget* GetPrevSibling() const {
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return mPrevSibling;
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}
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/**
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* Set the previous sibling of this widget
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*/
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void SetPrevSibling(nsIWidget* aSibling) {
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mPrevSibling = aSibling;
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}
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/**
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* Show or hide this widget
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*
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* @param aState PR_TRUE to show the Widget, PR_FALSE to hide it
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*
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*/
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NS_IMETHOD Show(PRBool aState) = 0;
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/**
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* Make the window modal
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*
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*/
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NS_IMETHOD SetModal(PRBool aModal) = 0;
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/**
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* Returns whether the window is visible
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*
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*/
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NS_IMETHOD IsVisible(PRBool & aState) = 0;
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/**
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* Perform platform-dependent sanity check on a potential window position.
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* This is guaranteed to work only for top-level windows.
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*
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* @param aAllowSlop: if true, allow the window to slop offscreen;
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* the window should be partially visible. if false,
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* force the entire window onscreen (or at least
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* the upper-left corner, if it's too large).
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* @param aX in: an x position expressed in screen coordinates.
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* out: the x position constrained to fit on the screen(s).
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* @param aY in: an y position expressed in screen coordinates.
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* out: the y position constrained to fit on the screen(s).
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* @return vapid success indication. but see also the parameters.
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*
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**/
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NS_IMETHOD ConstrainPosition(PRBool aAllowSlop,
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PRInt32 *aX,
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PRInt32 *aY) = 0;
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/**
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* Move this widget.
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*
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* @param aX the new x position expressed in the parent's coordinate system
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* @param aY the new y position expressed in the parent's coordinate system
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*
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**/
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NS_IMETHOD Move(PRInt32 aX, PRInt32 aY) = 0;
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/**
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* Resize this widget.
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*
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* @param aWidth the new width expressed in the parent's coordinate system
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* @param aHeight the new height expressed in the parent's coordinate system
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* @param aRepaint whether the widget should be repainted
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*
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*/
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NS_IMETHOD Resize(PRInt32 aWidth,
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PRInt32 aHeight,
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PRBool aRepaint) = 0;
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/**
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* Move or resize this widget.
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*
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* @param aX the new x position expressed in the parent's coordinate system
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* @param aY the new y position expressed in the parent's coordinate system
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* @param aWidth the new width expressed in the parent's coordinate system
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* @param aHeight the new height expressed in the parent's coordinate system
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* @param aRepaint whether the widget should be repainted if the size changes
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*
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*/
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NS_IMETHOD Resize(PRInt32 aX,
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PRInt32 aY,
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PRInt32 aWidth,
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PRInt32 aHeight,
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PRBool aRepaint) = 0;
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/**
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* Sets the widget's z-index.
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*/
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NS_IMETHOD SetZIndex(PRInt32 aZIndex) = 0;
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/**
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* Gets the widget's z-index.
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*/
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NS_IMETHOD GetZIndex(PRInt32* aZIndex) = 0;
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/**
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* Position this widget just behind the given widget. (Used to
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* control z-order for top-level widgets. Get/SetZIndex by contrast
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* control z-order for child widgets of other widgets.)
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* @param aPlacement top, bottom, or below a widget
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* (if top or bottom, param aWidget is ignored)
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* @param aWidget widget to place this widget behind
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* (only if aPlacement is eZPlacementBelow).
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* null is equivalent to aPlacement of eZPlacementTop
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* @param aActivate true to activate the widget after placing it
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*/
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NS_IMETHOD PlaceBehind(nsTopLevelWidgetZPlacement aPlacement,
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nsIWidget *aWidget, PRBool aActivate) = 0;
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/**
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* Minimize, maximize or normalize the window size.
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* Takes a value from nsSizeMode (see nsGUIEvent.h)
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*/
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NS_IMETHOD SetSizeMode(PRInt32 aMode) = 0;
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/**
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* Return size mode (minimized, maximized, normalized).
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* Returns a value from nsSizeMode (see nsGUIEvent.h)
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*/
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NS_IMETHOD GetSizeMode(PRInt32* aMode) = 0;
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/**
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* Enable or disable this Widget
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*
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* @param aState PR_TRUE to enable the Widget, PR_FALSE to disable it.
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*
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*/
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NS_IMETHOD Enable(PRBool aState) = 0;
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/**
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* Ask whether the widget is enabled
|
|
* @param aState returns PR_TRUE if the widget is enabled
|
|
*/
|
|
NS_IMETHOD IsEnabled(PRBool *aState) = 0;
|
|
|
|
/**
|
|
* Give focus to this widget.
|
|
*/
|
|
NS_IMETHOD SetFocus(PRBool aRaise = PR_FALSE) = 0;
|
|
|
|
/**
|
|
* Get this widget's outside dimensions relative to its parent widget
|
|
*
|
|
* @param aRect on return it holds the x, y, width and height of this widget
|
|
*
|
|
*/
|
|
NS_IMETHOD GetBounds(nsRect &aRect) = 0;
|
|
|
|
|
|
/**
|
|
* Get this widget's outside dimensions in global coordinates. (One might think this
|
|
* could be accomplished by stringing together other methods in this interface, but
|
|
* then one would bloody one's nose on different coordinate system handling by different
|
|
* platforms.)
|
|
*
|
|
* @param aRect on return it holds the x, y, width and height of this widget
|
|
*
|
|
*/
|
|
NS_IMETHOD GetScreenBounds(nsRect &aRect) = 0;
|
|
|
|
|
|
/**
|
|
* Get this widget's client area dimensions, if the window has a 3D border appearance
|
|
* this returns the area inside the border, The x and y are always zero
|
|
*
|
|
* @param aRect on return it holds the x. y, width and height of the client area of this widget
|
|
*
|
|
*/
|
|
NS_IMETHOD GetClientBounds(nsRect &aRect) = 0;
|
|
|
|
/**
|
|
* Gets the width and height of the borders
|
|
* @param aWidth the width of the border
|
|
* @param aHeight the height of the border
|
|
*
|
|
*/
|
|
NS_IMETHOD GetBorderSize(PRInt32 &aWidth, PRInt32 &aHeight) = 0;
|
|
|
|
/**
|
|
* Get the foreground color for this widget
|
|
*
|
|
* @return this widget's foreground color
|
|
*
|
|
*/
|
|
virtual nscolor GetForegroundColor(void) = 0;
|
|
|
|
/**
|
|
* Set the foreground color for this widget
|
|
*
|
|
* @param aColor the new foreground color
|
|
*
|
|
*/
|
|
|
|
NS_IMETHOD SetForegroundColor(const nscolor &aColor) = 0;
|
|
|
|
/**
|
|
* Get the background color for this widget
|
|
*
|
|
* @return this widget's background color
|
|
*
|
|
*/
|
|
|
|
virtual nscolor GetBackgroundColor(void) = 0;
|
|
|
|
/**
|
|
* Set the background color for this widget
|
|
*
|
|
* @param aColor the new background color
|
|
*
|
|
*/
|
|
|
|
NS_IMETHOD SetBackgroundColor(const nscolor &aColor) = 0;
|
|
|
|
/**
|
|
* Get the font for this widget
|
|
*
|
|
* @return the font metrics
|
|
*/
|
|
|
|
virtual nsIFontMetrics* GetFont(void) = 0;
|
|
|
|
/**
|
|
* Set the font for this widget
|
|
*
|
|
* @param aFont font to display. See nsFont for allowable fonts
|
|
*/
|
|
|
|
NS_IMETHOD SetFont(const nsFont &aFont) = 0;
|
|
|
|
/**
|
|
* Get the cursor for this widget.
|
|
*
|
|
* @return this widget's cursor.
|
|
*/
|
|
|
|
virtual nsCursor GetCursor(void) = 0;
|
|
|
|
/**
|
|
* Set the cursor for this widget
|
|
*
|
|
* @param aCursor the new cursor for this widget
|
|
*/
|
|
|
|
NS_IMETHOD SetCursor(nsCursor aCursor) = 0;
|
|
|
|
/**
|
|
* Sets an image as the cursor for this widget.
|
|
*
|
|
* @param aCursor the cursor to set
|
|
* @retval NS_ERROR_NOT_IMPLEMENTED if setting images as cursors is not
|
|
* supported
|
|
*/
|
|
NS_IMETHOD SetCursor(imgIContainer* aCursor) = 0;
|
|
|
|
/**
|
|
* Get the window type of this widget
|
|
*
|
|
* @param aWindowType the window type of the widget
|
|
*/
|
|
NS_IMETHOD GetWindowType(nsWindowType& aWindowType) = 0;
|
|
|
|
/**
|
|
* Set the translucency of the top-level window containing this widget.
|
|
* So, e.g., if you call this on the widget for an IFRAME, the top level
|
|
* browser window containing the IFRAME actually gets set. Be careful.
|
|
*
|
|
* This can fail if the platform doesn't support
|
|
* transparency/translucency. By default widgets are not
|
|
* transparent. This will also fail if the toplevel window is not
|
|
* a Mozilla window, e.g., if the widget is in an embedded
|
|
* context.
|
|
*
|
|
* After translucency has been enabled, the initial alpha channel
|
|
* value for all pixels is 1, i.e., opaque.
|
|
* If the window is resized then the alpha channel values for
|
|
* all pixels are reset to 1.
|
|
* @param aTranslucent true if the window may have translucent
|
|
* or transparent pixels
|
|
*/
|
|
NS_IMETHOD SetWindowTranslucency(PRBool aTranslucent) = 0;
|
|
|
|
/**
|
|
* Get the translucency of the top-level window that contains this
|
|
* widget.
|
|
* @param aTranslucent true if the window may have translucent or
|
|
* transparent pixels
|
|
*/
|
|
NS_IMETHOD GetWindowTranslucency(PRBool& aTranslucent) = 0;
|
|
|
|
/**
|
|
* Update the alpha channel for some pixels of the top-level window
|
|
* that contains this widget.
|
|
* The window must have been made translucent using SetWindowTranslucency.
|
|
* @param aRect the rect to update
|
|
* @param aAlphas the alpha values, in w x h array, row-major order,
|
|
* in units of 1/255. nsBlender::GetAlphas is a good way to compute this array.
|
|
*/
|
|
NS_IMETHOD UpdateTranslucentWindowAlpha(const nsRect& aRect, PRUint8* aAlphas) = 0;
|
|
|
|
/**
|
|
* Hide window chrome (borders, buttons) for this widget.
|
|
*
|
|
*/
|
|
NS_IMETHOD HideWindowChrome(PRBool aShouldHide) = 0;
|
|
|
|
/**
|
|
* Put the toplevel window into or out of fullscreen mode.
|
|
*
|
|
*/
|
|
NS_IMETHOD MakeFullScreen(PRBool aFullScreen) = 0;
|
|
|
|
/**
|
|
* Validate the widget.
|
|
*
|
|
*/
|
|
NS_IMETHOD Validate() = 0;
|
|
|
|
/**
|
|
* Invalidate the widget and repaint it.
|
|
*
|
|
* @param aIsSynchronous PR_TRUE then repaint synchronously. If PR_FALSE repaint later.
|
|
* @see #Update()
|
|
*/
|
|
|
|
NS_IMETHOD Invalidate(PRBool aIsSynchronous) = 0;
|
|
|
|
/**
|
|
* Invalidate a specified rect for a widget and repaints it.
|
|
*
|
|
* @param aIsSynchronouse PR_TRUE then repaint synchronously. If PR_FALSE repaint later.
|
|
* @see #Update()
|
|
*/
|
|
|
|
NS_IMETHOD Invalidate(const nsRect & aRect, PRBool aIsSynchronous) = 0;
|
|
|
|
/**
|
|
* Invalidate a specified region for a widget and repaints it.
|
|
*
|
|
* @param aIsSynchronouse PR_TRUE then repaint synchronously. If PR_FALSE repaint later.
|
|
* @see #Update()
|
|
*/
|
|
|
|
NS_IMETHOD InvalidateRegion(const nsIRegion* aRegion, PRBool aIsSynchronous) = 0;
|
|
|
|
/**
|
|
* Force a synchronous repaint of the window if there are dirty rects.
|
|
*
|
|
* @see Invalidate()
|
|
*/
|
|
|
|
NS_IMETHOD Update() = 0;
|
|
|
|
/**
|
|
* Adds a mouse listener to this widget
|
|
* Any existing mouse listener is replaced
|
|
*
|
|
* @param aListener mouse listener to add to this widget.
|
|
*/
|
|
|
|
NS_IMETHOD AddMouseListener(nsIMouseListener * aListener) = 0;
|
|
|
|
/**
|
|
* Adds an event listener to this widget
|
|
* Any existing event listener is replaced
|
|
*
|
|
* @param aListener event listener to add to this widget.
|
|
*/
|
|
|
|
NS_IMETHOD AddEventListener(nsIEventListener * aListener) = 0;
|
|
|
|
/**
|
|
* Adds a menu listener to this widget
|
|
* Any existing menu listener is replaced
|
|
*
|
|
* @param aListener menu listener to add to this widget.
|
|
*/
|
|
|
|
NS_IMETHOD AddMenuListener(nsIMenuListener * aListener) = 0;
|
|
|
|
/**
|
|
* Return the widget's toolkit
|
|
*
|
|
* @return the toolkit this widget was created in. See nsToolkit.
|
|
*/
|
|
|
|
virtual nsIToolkit* GetToolkit() = 0;
|
|
|
|
/**
|
|
* Set the color map for this widget
|
|
*
|
|
* @param aColorMap color map for displaying this widget
|
|
*
|
|
*/
|
|
|
|
NS_IMETHOD SetColorMap(nsColorMap *aColorMap) = 0;
|
|
|
|
/**
|
|
* XXX (This is obsolete and will be removed soon, Use ScrollWidgets instead)
|
|
* Scroll this widget.
|
|
*
|
|
* @param aDx amount to scroll along the x-axis
|
|
* @param aDy amount to scroll along the y-axis.
|
|
* @param aClipRect clipping rectangle to limit the scroll to.
|
|
*
|
|
*/
|
|
|
|
NS_IMETHOD Scroll(PRInt32 aDx, PRInt32 aDy, nsRect *aClipRect) = 0;
|
|
|
|
/**
|
|
* Scroll the contents of the widget.
|
|
* All child widgets are also scrolled by offsetting their coordinates.
|
|
* A NS_PAINT message is synchronously dispatched for the newly exposed rectangle.
|
|
*
|
|
* @param aDx amount to scroll along the x-axis in pixels
|
|
* @param aDy amount to scroll along the y-axis in pixels
|
|
*
|
|
*/
|
|
|
|
NS_IMETHOD ScrollWidgets(PRInt32 aDx, PRInt32 aDy) = 0;
|
|
|
|
/**
|
|
* Scroll an area of this widget. Child widgets are not scrolled.
|
|
* A NS_PAINT message is synchronously dispatched for the newly exposed rectangle.
|
|
*
|
|
* @param aRect source rectangle to scroll in the widget in pixels
|
|
* @param aDx x offset from the source in pixels
|
|
* @param aDy y offset from the source in pixels
|
|
*
|
|
*/
|
|
|
|
NS_IMETHOD ScrollRect(nsRect &aSrcRect, PRInt32 aDx, PRInt32 aDy) = 0;
|
|
|
|
/**
|
|
* Internal methods
|
|
*/
|
|
|
|
//@{
|
|
virtual void AddChild(nsIWidget* aChild) = 0;
|
|
virtual void RemoveChild(nsIWidget* aChild) = 0;
|
|
virtual void* GetNativeData(PRUint32 aDataType) = 0;
|
|
virtual void FreeNativeData(void * data, PRUint32 aDataType) = 0;//~~~
|
|
virtual nsIRenderingContext* GetRenderingContext() = 0;
|
|
virtual nsIDeviceContext* GetDeviceContext() = 0;
|
|
virtual nsIAppShell *GetAppShell() = 0;
|
|
//@}
|
|
|
|
/**
|
|
* Set border style
|
|
* Must be called before Create.
|
|
* @param aBorderStyle @see nsBorderStyle
|
|
*/
|
|
|
|
NS_IMETHOD SetBorderStyle(nsBorderStyle aBorderStyle) = 0;
|
|
|
|
/**
|
|
* Set the widget's title.
|
|
* Must be called after Create.
|
|
*
|
|
* @param aTitle string displayed as the title of the widget
|
|
*/
|
|
|
|
NS_IMETHOD SetTitle(const nsAString& aTitle) = 0;
|
|
|
|
/**
|
|
* Set the widget's icon.
|
|
* Must be called after Create.
|
|
*
|
|
* @param anIconSpec string specifying the icon to use; convention is to pass
|
|
* a resource: URL from which a platform-dependent resource
|
|
* file name will be constructed
|
|
*/
|
|
|
|
NS_IMETHOD SetIcon(const nsAString& anIconSpec) = 0;
|
|
|
|
/**
|
|
* Set the widget's MenuBar.
|
|
* Must be called after Create.
|
|
*
|
|
* @param aMenuBar the menubar
|
|
*/
|
|
|
|
NS_IMETHOD SetMenuBar(nsIMenuBar * aMenuBar) = 0;
|
|
|
|
/**
|
|
* Set the widget's MenuBar's visibility
|
|
*
|
|
* @param aShow PR_TRUE to show, PR_FALSE to hide
|
|
*/
|
|
|
|
NS_IMETHOD ShowMenuBar(PRBool aShow) = 0;
|
|
|
|
/**
|
|
* Convert from this widget coordinates to screen coordinates.
|
|
*
|
|
* @param aOldRect widget coordinates stored in the x,y members
|
|
* @param aNewRect screen coordinates stored in the x,y members
|
|
*/
|
|
|
|
NS_IMETHOD WidgetToScreen(const nsRect& aOldRect, nsRect& aNewRect) = 0;
|
|
|
|
/**
|
|
* Convert from screen coordinates to this widget's coordinates.
|
|
*
|
|
* @param aOldRect screen coordinates stored in the x,y members
|
|
* @param aNewRect widget's coordinates stored in the x,y members
|
|
*/
|
|
|
|
NS_IMETHOD ScreenToWidget(const nsRect& aOldRect, nsRect& aNewRect) = 0;
|
|
|
|
/**
|
|
* When adjustments are to made to a whole set of child widgets, call this
|
|
* before resizing/positioning the child windows to minimize repaints. Must
|
|
* be followed by EndResizingChildren() after child windows have been
|
|
* adjusted.
|
|
*
|
|
*/
|
|
|
|
NS_IMETHOD BeginResizingChildren(void) = 0;
|
|
|
|
/**
|
|
* Call this when finished adjusting child windows. Must be preceded by
|
|
* BeginResizingChildren().
|
|
*
|
|
*/
|
|
|
|
NS_IMETHOD EndResizingChildren(void) = 0;
|
|
|
|
/**
|
|
* Returns the preferred width and height for the widget
|
|
*
|
|
*/
|
|
NS_IMETHOD GetPreferredSize(PRInt32& aWidth, PRInt32& aHeight) = 0;
|
|
|
|
/**
|
|
* Set the preferred width and height for the widget
|
|
*
|
|
*/
|
|
NS_IMETHOD SetPreferredSize(PRInt32 aWidth, PRInt32 aHeight) = 0;
|
|
|
|
/**
|
|
* Dispatches an event to the widget
|
|
*
|
|
*/
|
|
NS_IMETHOD DispatchEvent(nsGUIEvent* event, nsEventStatus & aStatus) = 0;
|
|
|
|
|
|
/**
|
|
* For printing and lightweight widgets
|
|
*
|
|
*/
|
|
NS_IMETHOD Paint(nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect) = 0;
|
|
|
|
/**
|
|
* Enables the dropping of files to a widget (XXX this is temporary)
|
|
*
|
|
*/
|
|
NS_IMETHOD EnableDragDrop(PRBool aEnable) = 0;
|
|
|
|
virtual void ConvertToDeviceCoordinates(nscoord &aX,nscoord &aY) = 0;
|
|
|
|
/**
|
|
* Enables/Disables system mouse capture.
|
|
* @param aCapture PR_TRUE enables mouse capture, PR_FALSE disables mouse capture
|
|
*
|
|
*/
|
|
NS_IMETHOD CaptureMouse(PRBool aCapture) = 0;
|
|
|
|
/**
|
|
* Gets the window class
|
|
* implemented in gtk
|
|
*/
|
|
NS_IMETHOD GetWindowClass(char *aClass) = 0;
|
|
|
|
/**
|
|
* Sets the window class
|
|
* implemented in gtk
|
|
*/
|
|
NS_IMETHOD SetWindowClass(char *aClass) = 0;
|
|
|
|
/**
|
|
* Enables/Disables system capture of any and all events that would cause a
|
|
* dropdown to be rolled up, This method ignores the aConsumeRollupEvent
|
|
* parameter when aDoCapture is FALSE
|
|
* @param aDoCapture PR_TRUE enables capture, PR_FALSE disables capture
|
|
* @param aConsumeRollupEvent PR_TRUE consumes the rollup event, PR_FALSE dispatches rollup event
|
|
*
|
|
*/
|
|
NS_IMETHOD CaptureRollupEvents(nsIRollupListener * aListener, PRBool aDoCapture, PRBool aConsumeRollupEvent) = 0;
|
|
|
|
/**
|
|
* Determine whether a given event should be processed assuming we are
|
|
* the currently active modal window.
|
|
* Note that the exact semantics of this method are platform-dependent.
|
|
* The Macintosh, for instance, cares deeply that this method do exactly
|
|
* as advertised. Gtk, for instance, handles modality in a completely
|
|
* different fashion and does little if anything with this method.
|
|
* @param aRealEvent event is real or a null placeholder (Macintosh)
|
|
* @param aEvent void pointer to native event structure
|
|
* @param aForWindow return value. PR_TRUE iff event should be processed.
|
|
*/
|
|
NS_IMETHOD ModalEventFilter(PRBool aRealEvent, void *aEvent, PRBool *aForWindow) = 0;
|
|
|
|
/**
|
|
* Bring this window to the user's attention. This is intended to be a more
|
|
* gentle notification than popping the window to the top or putting up an
|
|
* alert. See, for example, Win32 FlashWindow or the NotificationManager on
|
|
* the Mac. The notification should be suppressed if the window is already
|
|
* in the foreground and should be dismissed when the user brings this window
|
|
* to the foreground.
|
|
* @param aCycleCount Maximum number of times to animate the window per system
|
|
* conventions. If set to -1, cycles indefinitely until
|
|
* window is brought into the foreground.
|
|
*/
|
|
NS_IMETHOD GetAttention(PRInt32 aCycleCount) = 0;
|
|
|
|
/**
|
|
* Get the last user input event time in milliseconds. If there are any pending
|
|
* native toolkit input events it returns the current time. All input events are
|
|
* included (ie. it is *not* limited to events targeted at this nsIWidget instance.
|
|
*
|
|
* @param aTime Last user input time in milliseconds. This value can be used to compare
|
|
* durations but can not be used for determining wall clock time. The value returned
|
|
* is platform dependent, but is compatible with the expression
|
|
* PR_IntervalToMicroseconds(PR_IntervalNow()).
|
|
*/
|
|
NS_IMETHOD GetLastInputEventTime(PRUint32& aTime) = 0;
|
|
|
|
|
|
protected:
|
|
// keep the list of children. We also keep track of our siblings.
|
|
// The ownership model is as follows: parent holds a strong ref to
|
|
// the first element of the list, and each element holds a strong
|
|
// ref to the next element in the list. The prevsibling and
|
|
// lastchild pointers are weak, which is fine as long as they are
|
|
// maintained properly.
|
|
nsCOMPtr<nsIWidget> mFirstChild;
|
|
nsIWidget* mLastChild;
|
|
nsCOMPtr<nsIWidget> mNextSibling;
|
|
nsIWidget* mPrevSibling;
|
|
};
|
|
|
|
#endif // nsIWidget_h__
|