2044 lines
75 KiB
C++
2044 lines
75 KiB
C++
/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsIWidget_h__
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#define nsIWidget_h__
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#include "mozilla/UniquePtr.h"
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#include "nsISupports.h"
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#include "nsColor.h"
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#include "nsRect.h"
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#include "nsStringGlue.h"
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#include "nsCOMPtr.h"
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#include "nsWidgetInitData.h"
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#include "nsTArray.h"
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#include "nsITheme.h"
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#include "nsITimer.h"
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#include "nsRegionFwd.h"
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#include "nsXULAppAPI.h"
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#include "mozilla/Maybe.h"
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#include "mozilla/EventForwards.h"
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#include "mozilla/layers/LayersTypes.h"
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#include "mozilla/RefPtr.h"
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#include "mozilla/TimeStamp.h"
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#include "mozilla/gfx/Point.h"
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#include "mozilla/widget/IMEData.h"
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#include "nsDataHashtable.h"
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#include "nsIObserver.h"
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#include "nsIWidgetListener.h"
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#include "FrameMetrics.h"
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#include "Units.h"
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// forward declarations
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class nsIRollupListener;
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class imgIContainer;
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class nsIContent;
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class ViewWrapper;
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class nsIScreen;
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class nsIRunnable;
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class nsIKeyEventInPluginCallback;
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namespace mozilla {
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namespace dom {
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class TabChild;
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} // namespace dom
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namespace plugins {
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class PluginWidgetChild;
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} // namespace plugins
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namespace layers {
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class AsyncDragMetrics;
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class Composer2D;
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class Compositor;
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class CompositorBridgeChild;
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class LayerManager;
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class LayerManagerComposite;
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class PLayerTransactionChild;
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struct ScrollableLayerGuid;
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} // namespace layers
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namespace gfx {
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class DrawTarget;
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class SourceSurface;
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} // namespace gfx
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namespace widget {
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class TextEventDispatcher;
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class TextEventDispatcherListener;
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class CompositorWidget;
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class CompositorWidgetInitData;
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} // namespace widget
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} // namespace mozilla
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/**
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* Callback function that processes events.
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*
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* The argument is actually a subtype (subclass) of WidgetEvent which carries
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* platform specific information about the event. Platform specific code
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* knows how to deal with it.
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*
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* The return value determines whether or not the default action should take
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* place.
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*/
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typedef nsEventStatus (* EVENT_CALLBACK)(mozilla::WidgetGUIEvent* aEvent);
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// Hide the native window system's real window type so as to avoid
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// including native window system types and APIs. 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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* Flags for the GetNativeData and SetNativeData functions
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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_TMP_WINDOW 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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// The toplevel GtkWidget containing this nsIWidget:
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#define NS_NATIVE_SHELLWIDGET 10
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// Has to match to NPNVnetscapeWindow, and shareable across processes
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// HWND on Windows and XID on X11
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#define NS_NATIVE_SHAREABLE_WINDOW 11
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#define NS_NATIVE_OPENGL_CONTEXT 12
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// See RegisterPluginWindowForRemoteUpdates
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#define NS_NATIVE_PLUGIN_ID 13
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// This is available only with GetNativeData() in parent process. Anybody
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// shouldn't access this pointer as a valid pointer since the result may be
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// special value like NS_ONLY_ONE_NATIVE_IME_CONTEXT. So, the result is just
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// an identifier of distinguishing a text composition is caused by which native
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// IME context. Note that the result is only valid in the process. So,
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// XP code should use nsIWidget::GetNativeIMEContext() instead of using this.
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#define NS_RAW_NATIVE_IME_CONTEXT 14
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#ifdef XP_MACOSX
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#define NS_NATIVE_PLUGIN_PORT_QD 100
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#define NS_NATIVE_PLUGIN_PORT_CG 101
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#endif
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#ifdef XP_WIN
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#define NS_NATIVE_TSF_THREAD_MGR 100
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#define NS_NATIVE_TSF_CATEGORY_MGR 101
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#define NS_NATIVE_TSF_DISPLAY_ATTR_MGR 102
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#define NS_NATIVE_ICOREWINDOW 103 // winrt specific
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#define NS_NATIVE_CHILD_WINDOW 104
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#define NS_NATIVE_CHILD_OF_SHAREABLE_WINDOW 105
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#endif
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#if defined(MOZ_WIDGET_GTK)
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// set/get nsPluginNativeWindowGtk, e10s specific
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#define NS_NATIVE_PLUGIN_OBJECT_PTR 104
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#ifdef MOZ_X11
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#define NS_NATIVE_COMPOSITOR_DISPLAY 105
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#endif // MOZ_X11
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#endif
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#ifdef MOZ_WIDGET_ANDROID
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#define NS_JAVA_SURFACE 100
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#define NS_PRESENTATION_WINDOW 101
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#define NS_PRESENTATION_SURFACE 102
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#endif
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#define NS_IWIDGET_IID \
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{ 0x06396bf6, 0x2dd8, 0x45e5, \
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{ 0xac, 0x45, 0x75, 0x26, 0x53, 0xb1, 0xc9, 0x80 } }
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/*
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* Window shadow styles
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* Also used for the -moz-window-shadow CSS property
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*/
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#define NS_STYLE_WINDOW_SHADOW_NONE 0
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#define NS_STYLE_WINDOW_SHADOW_DEFAULT 1
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#define NS_STYLE_WINDOW_SHADOW_MENU 2
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#define NS_STYLE_WINDOW_SHADOW_TOOLTIP 3
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#define NS_STYLE_WINDOW_SHADOW_SHEET 4
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/**
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* Transparency modes
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*/
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enum nsTransparencyMode {
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eTransparencyOpaque = 0, // Fully opaque
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eTransparencyTransparent, // Parts of the window may be transparent
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eTransparencyGlass, // Transparent parts of the window have Vista AeroGlass effect applied
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eTransparencyBorderlessGlass // As above, but without a border around the opaque areas when there would otherwise be one with eTransparencyGlass
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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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eCursor_none,
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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 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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* Before the OS goes to sleep, this topic is notified.
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*/
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#define NS_WIDGET_SLEEP_OBSERVER_TOPIC "sleep_notification"
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/**
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* After the OS wakes up, this topic is notified.
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*/
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#define NS_WIDGET_WAKE_OBSERVER_TOPIC "wake_notification"
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/**
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* Before the OS suspends the current process, this topic is notified. Some
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* OS will kill processes that are suspended instead of resuming them.
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* For that reason this topic may be useful to safely close down resources.
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*/
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#define NS_WIDGET_SUSPEND_PROCESS_OBSERVER_TOPIC "suspend_process_notification"
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/**
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* After the current process resumes from being suspended, this topic is
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* notified.
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*/
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#define NS_WIDGET_RESUME_PROCESS_OBSERVER_TOPIC "resume_process_notification"
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namespace mozilla {
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namespace widget {
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/**
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* Size constraints for setting the minimum and maximum size of a widget.
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* Values are in device pixels.
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*/
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struct SizeConstraints {
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SizeConstraints()
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: mMaxSize(NS_MAXSIZE, NS_MAXSIZE)
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{
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}
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SizeConstraints(mozilla::LayoutDeviceIntSize aMinSize,
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mozilla::LayoutDeviceIntSize aMaxSize)
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: mMinSize(aMinSize),
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mMaxSize(aMaxSize)
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{
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}
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mozilla::LayoutDeviceIntSize mMinSize;
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mozilla::LayoutDeviceIntSize mMaxSize;
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};
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struct AutoObserverNotifier {
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AutoObserverNotifier(nsIObserver* aObserver,
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const char* aTopic)
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: mObserver(aObserver)
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, mTopic(aTopic)
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{
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}
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void SkipNotification()
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{
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mObserver = nullptr;
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}
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uint64_t SaveObserver()
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{
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if (!mObserver) {
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return 0;
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}
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uint64_t observerId = ++sObserverId;
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sSavedObservers.Put(observerId, mObserver);
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SkipNotification();
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return observerId;
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}
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~AutoObserverNotifier()
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{
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if (mObserver) {
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mObserver->Observe(nullptr, mTopic, nullptr);
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}
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}
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static void NotifySavedObserver(const uint64_t& aObserverId,
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const char* aTopic)
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{
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nsCOMPtr<nsIObserver> observer = sSavedObservers.Get(aObserverId);
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if (!observer) {
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MOZ_ASSERT(aObserverId == 0, "We should always find a saved observer for nonzero IDs");
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return;
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}
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sSavedObservers.Remove(aObserverId);
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observer->Observe(nullptr, aTopic, nullptr);
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}
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private:
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nsCOMPtr<nsIObserver> mObserver;
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const char* mTopic;
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private:
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static uint64_t sObserverId;
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static nsDataHashtable<nsUint64HashKey, nsCOMPtr<nsIObserver>> sSavedObservers;
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};
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} // namespace widget
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} // namespace mozilla
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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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{
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protected:
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typedef mozilla::dom::TabChild TabChild;
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public:
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typedef mozilla::layers::Composer2D Composer2D;
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typedef mozilla::layers::CompositorBridgeChild CompositorBridgeChild;
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typedef mozilla::layers::AsyncDragMetrics AsyncDragMetrics;
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typedef mozilla::layers::FrameMetrics FrameMetrics;
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typedef mozilla::layers::LayerManager LayerManager;
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typedef mozilla::layers::LayerManagerComposite LayerManagerComposite;
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typedef mozilla::layers::LayersBackend LayersBackend;
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typedef mozilla::layers::PLayerTransactionChild PLayerTransactionChild;
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typedef mozilla::layers::ZoomConstraints ZoomConstraints;
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typedef mozilla::widget::IMEMessage IMEMessage;
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typedef mozilla::widget::IMENotification IMENotification;
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typedef mozilla::widget::IMEState IMEState;
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typedef mozilla::widget::InputContext InputContext;
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typedef mozilla::widget::InputContextAction InputContextAction;
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typedef mozilla::widget::NativeIMEContext NativeIMEContext;
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typedef mozilla::widget::SizeConstraints SizeConstraints;
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typedef mozilla::widget::TextEventDispatcher TextEventDispatcher;
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typedef mozilla::widget::TextEventDispatcherListener
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TextEventDispatcherListener;
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typedef mozilla::LayoutDeviceIntMargin LayoutDeviceIntMargin;
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typedef mozilla::LayoutDeviceIntPoint LayoutDeviceIntPoint;
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typedef mozilla::LayoutDeviceIntRect LayoutDeviceIntRect;
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typedef mozilla::LayoutDeviceIntRegion LayoutDeviceIntRegion;
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typedef mozilla::LayoutDeviceIntSize LayoutDeviceIntSize;
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typedef mozilla::ScreenIntPoint ScreenIntPoint;
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typedef mozilla::DesktopIntRect DesktopIntRect;
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typedef mozilla::CSSRect CSSRect;
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// Used in UpdateThemeGeometries.
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struct ThemeGeometry {
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// The ThemeGeometryType value for the themed widget, see
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// nsITheme::ThemeGeometryTypeForWidget.
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nsITheme::ThemeGeometryType mType;
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// The device-pixel rect within the window for the themed widget
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LayoutDeviceIntRect mRect;
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ThemeGeometry(nsITheme::ThemeGeometryType aType,
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const LayoutDeviceIntRect& aRect)
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: mType(aType)
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, mRect(aRect)
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{ }
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};
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_IWIDGET_IID)
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nsIWidget()
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: mLastChild(nullptr)
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, mPrevSibling(nullptr)
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, mOnDestroyCalled(false)
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, mWindowType(eWindowType_child)
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, mZIndex(0)
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{
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ClearNativeTouchSequence(nullptr);
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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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* 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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* In practice at least one of aParent and aNativeParent will be null. If
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* both are null the widget isn't parented (e.g. context menus or
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* independent top level windows).
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*
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* The dimensions given in aRect are specified in the parent's
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* device coordinate system.
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* This must not be called for parentless widgets such as top-level
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* windows, which use the desktop pixel coordinate system; a separate
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* method is provided for these.
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*
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* @param aParent parent nsIWidget
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* @param aNativeParent native parent widget
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* @param aRect the widget dimension
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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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virtual MOZ_MUST_USE nsresult
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Create(nsIWidget* aParent,
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nsNativeWidget aNativeParent,
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const LayoutDeviceIntRect& aRect,
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nsWidgetInitData* aInitData = nullptr) = 0;
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/*
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* As above, but with aRect specified in DesktopPixel units (for top-level
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* widgets).
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* Default implementation just converts aRect to device pixels and calls
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* through to device-pixel Create, but platforms may override this if the
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* mapping is not straightforward or the native platform needs to use the
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* desktop pixel values directly.
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*/
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virtual MOZ_MUST_USE nsresult
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Create(nsIWidget* aParent,
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nsNativeWidget aNativeParent,
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const DesktopIntRect& aRect,
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nsWidgetInitData* aInitData = nullptr)
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{
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LayoutDeviceIntRect devPixRect =
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RoundedToInt(aRect * GetDesktopToDeviceScale());
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return Create(aParent, aNativeParent, devPixRect, aInitData);
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}
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/**
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* Allocate, initialize, and return a widget that is a child of
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* |this|. The returned widget (if nonnull) has gone through the
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* equivalent of CreateInstance(widgetCID) + Create(...).
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*
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* |CreateChild()| lets widget backends decide whether to parent
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* the new child widget to this, nonnatively parent it, or both.
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* This interface exists to support the PuppetWidget backend,
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* which is entirely non-native. All other params are the same as
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* for |Create()|.
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*
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* |aForceUseIWidgetParent| forces |CreateChild()| to only use the
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* |nsIWidget*| this, not its native widget (if it exists), when
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* calling |Create()|. This is a timid hack around poorly
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* understood code, and shouldn't be used in new code.
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*/
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virtual already_AddRefed<nsIWidget>
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CreateChild(const LayoutDeviceIntRect& aRect,
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nsWidgetInitData* aInitData = nullptr,
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bool aForceUseIWidgetParent = false) = 0;
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/**
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* Attach to a top level widget.
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*
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* In cases where a top level chrome widget is being used as a content
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* container, attach a secondary listener and update the device
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* context. The primary widget listener will continue to be called for
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* notifications relating to the top-level window, whereas other
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* notifications such as painting and events will instead be called via
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* the attached listener. SetAttachedWidgetListener should be used to
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* assign the attached listener.
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*
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* aUseAttachedEvents if true, events are sent to the attached listener
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* instead of the normal listener.
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*/
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virtual void AttachViewToTopLevel(bool aUseAttachedEvents) = 0;
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/**
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* Accessor functions to get and set the attached listener. Used by
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* nsView in connection with AttachViewToTopLevel above.
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*/
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virtual void SetAttachedWidgetListener(nsIWidgetListener* aListener) = 0;
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virtual nsIWidgetListener* GetAttachedWidgetListener() = 0;
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virtual void SetPreviouslyAttachedWidgetListener(nsIWidgetListener* aListener) = 0;
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virtual nsIWidgetListener* GetPreviouslyAttachedWidgetListener() = 0;
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/**
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* Accessor functions to get and set the listener which handles various
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* actions for the widget.
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*/
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//@{
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virtual nsIWidgetListener* GetWidgetListener() = 0;
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virtual void SetWidgetListener(nsIWidgetListener* alistener) = 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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virtual void Destroy() = 0;
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|
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/**
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* Destroyed() returns true if Destroy() has been called already.
|
|
* Otherwise, false.
|
|
*/
|
|
bool Destroyed() const { return mOnDestroyCalled; }
|
|
|
|
|
|
/**
|
|
* Reparent a widget
|
|
*
|
|
* Change the widget's parent. Null parents are allowed.
|
|
*
|
|
* @param aNewParent new parent
|
|
*/
|
|
NS_IMETHOD SetParent(nsIWidget* aNewParent) = 0;
|
|
|
|
/**
|
|
* Return the parent Widget of this Widget or nullptr if this is a
|
|
* top level window
|
|
*
|
|
* @return the parent widget or nullptr if it does not have a parent
|
|
*
|
|
*/
|
|
virtual nsIWidget* GetParent(void) = 0;
|
|
|
|
/**
|
|
* Return the top level Widget of this Widget
|
|
*
|
|
* @return the top level widget
|
|
*/
|
|
virtual nsIWidget* GetTopLevelWidget() = 0;
|
|
|
|
/**
|
|
* Return the top (non-sheet) parent of this Widget if it's a sheet,
|
|
* or nullptr if this isn't a sheet (or some other error occurred).
|
|
* Sheets are only supported on some platforms (currently only OS X).
|
|
*
|
|
* @return the top (non-sheet) parent widget or nullptr
|
|
*
|
|
*/
|
|
virtual nsIWidget* GetSheetWindowParent(void) = 0;
|
|
|
|
/**
|
|
* Return the physical DPI of the screen containing the window ...
|
|
* the number of device pixels per inch.
|
|
*/
|
|
virtual float GetDPI() = 0;
|
|
|
|
/**
|
|
* Return the scaling factor between device pixels and the platform-
|
|
* dependent "desktop pixels" used to manage window positions on a
|
|
* potentially multi-screen, mixed-resolution desktop.
|
|
*/
|
|
virtual mozilla::DesktopToLayoutDeviceScale GetDesktopToDeviceScale() = 0;
|
|
|
|
/**
|
|
* Return the default scale factor for the window. This is the
|
|
* default number of device pixels per CSS pixel to use. This should
|
|
* depend on OS/platform settings such as the Mac's "UI scale factor"
|
|
* or Windows' "font DPI". This will take into account Gecko preferences
|
|
* overriding the system setting.
|
|
*/
|
|
mozilla::CSSToLayoutDeviceScale GetDefaultScale();
|
|
|
|
/**
|
|
* Return the Gecko override of the system default scale, if any;
|
|
* returns <= 0.0 if the system scale should be used as-is.
|
|
* nsIWidget::GetDefaultScale() [above] takes this into account.
|
|
* It is exposed here so that code that wants to check for a
|
|
* default-scale override without having a widget on hand can
|
|
* easily access the same value.
|
|
* Note that any scale override is a browser-wide value, whereas
|
|
* the default GetDefaultScale value (when no override is present)
|
|
* may vary between widgets (or screens).
|
|
*/
|
|
static double DefaultScaleOverride();
|
|
|
|
/**
|
|
* Return the first child of this widget. Will return null if
|
|
* there are no children.
|
|
*/
|
|
nsIWidget* GetFirstChild() const {
|
|
return mFirstChild;
|
|
}
|
|
|
|
/**
|
|
* Return the last child of this widget. Will return null if
|
|
* there are no children.
|
|
*/
|
|
nsIWidget* GetLastChild() const {
|
|
return mLastChild;
|
|
}
|
|
|
|
/**
|
|
* Return the next sibling of this widget
|
|
*/
|
|
nsIWidget* GetNextSibling() const {
|
|
return mNextSibling;
|
|
}
|
|
|
|
/**
|
|
* Set the next sibling of this widget
|
|
*/
|
|
void SetNextSibling(nsIWidget* aSibling) {
|
|
mNextSibling = aSibling;
|
|
}
|
|
|
|
/**
|
|
* Return the previous sibling of this widget
|
|
*/
|
|
nsIWidget* GetPrevSibling() const {
|
|
return mPrevSibling;
|
|
}
|
|
|
|
/**
|
|
* Set the previous sibling of this widget
|
|
*/
|
|
void SetPrevSibling(nsIWidget* aSibling) {
|
|
mPrevSibling = aSibling;
|
|
}
|
|
|
|
/**
|
|
* Show or hide this widget
|
|
*
|
|
* @param aState true to show the Widget, false to hide it
|
|
*
|
|
*/
|
|
NS_IMETHOD Show(bool aState) = 0;
|
|
|
|
/**
|
|
* Make the window modal.
|
|
*/
|
|
virtual void SetModal(bool aModal) = 0;
|
|
|
|
/**
|
|
* Make the non-modal window opened by modal window fake-modal, that will
|
|
* call SetFakeModal(false) on destroy on Cocoa.
|
|
*/
|
|
virtual void SetFakeModal(bool aModal)
|
|
{
|
|
SetModal(aModal);
|
|
}
|
|
|
|
/**
|
|
* Are we app modal. Currently only implemented on Cocoa.
|
|
*/
|
|
virtual bool IsRunningAppModal()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* The maximum number of simultaneous touch contacts supported by the device.
|
|
* In the case of devices with multiple digitizers (e.g. multiple touch screens),
|
|
* the value will be the maximum of the set of maximum supported contacts by
|
|
* each individual digitizer.
|
|
*/
|
|
virtual uint32_t GetMaxTouchPoints() const = 0;
|
|
|
|
/**
|
|
* Returns whether the window is visible
|
|
*
|
|
*/
|
|
virtual bool IsVisible() const = 0;
|
|
|
|
/**
|
|
* Perform platform-dependent sanity check on a potential window position.
|
|
* This is guaranteed to work only for top-level windows.
|
|
*
|
|
* @param aAllowSlop: if true, allow the window to slop offscreen;
|
|
* the window should be partially visible. if false,
|
|
* force the entire window onscreen (or at least
|
|
* the upper-left corner, if it's too large).
|
|
* @param aX in: an x position expressed in screen coordinates.
|
|
* out: the x position constrained to fit on the screen(s).
|
|
* @param aY in: an y position expressed in screen coordinates.
|
|
* out: the y position constrained to fit on the screen(s).
|
|
*
|
|
**/
|
|
virtual void ConstrainPosition(bool aAllowSlop,
|
|
int32_t *aX,
|
|
int32_t *aY) = 0;
|
|
|
|
/**
|
|
* NOTE:
|
|
*
|
|
* For a top-level window widget, the "parent's coordinate system" is the
|
|
* "global" display pixel coordinate space, *not* device pixels (which
|
|
* may be inconsistent between multiple screens, at least in the Mac OS
|
|
* case with mixed hi-dpi and lo-dpi displays). This applies to all the
|
|
* following Move and Resize widget APIs.
|
|
*
|
|
* The display-/device-pixel distinction becomes important for (at least)
|
|
* Mac OS X with Hi-DPI (retina) displays, and Windows when the UI scale
|
|
* factor is set to other than 100%.
|
|
*
|
|
* The Move and Resize methods take floating-point parameters, rather than
|
|
* integer ones. This is important when manipulating top-level widgets,
|
|
* where the coordinate system may not be an integral multiple of the
|
|
* device-pixel space.
|
|
**/
|
|
|
|
/**
|
|
* Move this widget.
|
|
*
|
|
* Coordinates refer to the top-left of the widget. For toplevel windows
|
|
* with decorations, this is the top-left of the titlebar and frame .
|
|
*
|
|
* @param aX the new x position expressed in the parent's coordinate system
|
|
* @param aY the new y position expressed in the parent's coordinate system
|
|
*
|
|
**/
|
|
NS_IMETHOD Move(double aX, double aY) = 0;
|
|
|
|
/**
|
|
* Reposition this widget so that the client area has the given offset.
|
|
*
|
|
* @param aX the new x offset of the client area expressed as an
|
|
* offset from the origin of the client area of the parent
|
|
* widget (for root widgets and popup widgets it is in
|
|
* screen coordinates)
|
|
* @param aY the new y offset of the client area expressed as an
|
|
* offset from the origin of the client area of the parent
|
|
* widget (for root widgets and popup widgets it is in
|
|
* screen coordinates)
|
|
*
|
|
**/
|
|
NS_IMETHOD MoveClient(double aX, double aY) = 0;
|
|
|
|
/**
|
|
* Resize this widget. Any size constraints set for the window by a
|
|
* previous call to SetSizeConstraints will be applied.
|
|
*
|
|
* @param aWidth the new width expressed in the parent's coordinate system
|
|
* @param aHeight the new height expressed in the parent's coordinate system
|
|
* @param aRepaint whether the widget should be repainted
|
|
*
|
|
*/
|
|
NS_IMETHOD Resize(double aWidth,
|
|
double aHeight,
|
|
bool aRepaint) = 0;
|
|
|
|
/**
|
|
* Move or resize this widget. Any size constraints set for the window by
|
|
* a previous call to SetSizeConstraints will be applied.
|
|
*
|
|
* @param aX the new x position expressed in the parent's coordinate system
|
|
* @param aY the new y position expressed in the parent's coordinate system
|
|
* @param aWidth the new width expressed in the parent's coordinate system
|
|
* @param aHeight the new height expressed in the parent's coordinate system
|
|
* @param aRepaint whether the widget should be repainted if the size changes
|
|
*
|
|
*/
|
|
NS_IMETHOD Resize(double aX,
|
|
double aY,
|
|
double aWidth,
|
|
double aHeight,
|
|
bool aRepaint) = 0;
|
|
|
|
/**
|
|
* Resize the widget so that the inner client area has the given size.
|
|
*
|
|
* @param aWidth the new width of the client area.
|
|
* @param aHeight the new height of the client area.
|
|
* @param aRepaint whether the widget should be repainted
|
|
*
|
|
*/
|
|
NS_IMETHOD ResizeClient(double aWidth,
|
|
double aHeight,
|
|
bool aRepaint) = 0;
|
|
|
|
/**
|
|
* Resize and reposition the widget so tht inner client area has the given
|
|
* offset and size.
|
|
*
|
|
* @param aX the new x offset of the client area expressed as an
|
|
* offset from the origin of the client area of the parent
|
|
* widget (for root widgets and popup widgets it is in
|
|
* screen coordinates)
|
|
* @param aY the new y offset of the client area expressed as an
|
|
* offset from the origin of the client area of the parent
|
|
* widget (for root widgets and popup widgets it is in
|
|
* screen coordinates)
|
|
* @param aWidth the new width of the client area.
|
|
* @param aHeight the new height of the client area.
|
|
* @param aRepaint whether the widget should be repainted
|
|
*
|
|
*/
|
|
NS_IMETHOD ResizeClient(double aX,
|
|
double aY,
|
|
double aWidth,
|
|
double aHeight,
|
|
bool aRepaint) = 0;
|
|
|
|
/**
|
|
* Sets the widget's z-index.
|
|
*/
|
|
virtual void SetZIndex(int32_t aZIndex) = 0;
|
|
|
|
/**
|
|
* Gets the widget's z-index.
|
|
*/
|
|
int32_t GetZIndex()
|
|
{
|
|
return mZIndex;
|
|
}
|
|
|
|
/**
|
|
* Position this widget just behind the given widget. (Used to
|
|
* control z-order for top-level widgets. Get/SetZIndex by contrast
|
|
* control z-order for child widgets of other widgets.)
|
|
* @param aPlacement top, bottom, or below a widget
|
|
* (if top or bottom, param aWidget is ignored)
|
|
* @param aWidget widget to place this widget behind
|
|
* (only if aPlacement is eZPlacementBelow).
|
|
* null is equivalent to aPlacement of eZPlacementTop
|
|
* @param aActivate true to activate the widget after placing it
|
|
*/
|
|
virtual void PlaceBehind(nsTopLevelWidgetZPlacement aPlacement,
|
|
nsIWidget *aWidget, bool aActivate) = 0;
|
|
|
|
/**
|
|
* Minimize, maximize or normalize the window size.
|
|
* Takes a value from nsSizeMode (see nsIWidgetListener.h)
|
|
*/
|
|
virtual void SetSizeMode(nsSizeMode aMode) = 0;
|
|
|
|
/**
|
|
* Return size mode (minimized, maximized, normalized).
|
|
* Returns a value from nsSizeMode (see nsIWidgetListener.h)
|
|
*/
|
|
virtual nsSizeMode SizeMode() = 0;
|
|
|
|
/**
|
|
* Enable or disable this Widget
|
|
*
|
|
* @param aState true to enable the Widget, false to disable it.
|
|
*
|
|
*/
|
|
NS_IMETHOD Enable(bool aState) = 0;
|
|
|
|
/**
|
|
* Ask whether the widget is enabled
|
|
*/
|
|
virtual bool IsEnabled() const = 0;
|
|
|
|
/**
|
|
* Request activation of this window or give focus to this widget.
|
|
*
|
|
* @param aRaise If true, this function requests activation of this
|
|
* widget's toplevel window.
|
|
* If false, the appropriate toplevel window (which in
|
|
* the case of popups may not be this widget's toplevel
|
|
* window) is already active.
|
|
*/
|
|
NS_IMETHOD SetFocus(bool aRaise = false) = 0;
|
|
|
|
/**
|
|
* Get this widget's outside dimensions relative to its parent widget. For
|
|
* popup widgets the returned rect is in screen coordinates and not
|
|
* relative to its parent widget.
|
|
*
|
|
* @return the x, y, width and height of this widget.
|
|
*/
|
|
virtual LayoutDeviceIntRect GetBounds() = 0;
|
|
|
|
/**
|
|
* Get this widget's outside dimensions in device coordinates. This
|
|
* includes any title bar on the window.
|
|
*
|
|
* @return the x, y, width and height of this widget.
|
|
*/
|
|
virtual LayoutDeviceIntRect GetScreenBounds() = 0;
|
|
|
|
/**
|
|
* Similar to GetScreenBounds except that this function will always
|
|
* get the size when the widget is in the nsSizeMode_Normal size mode
|
|
* even if the current size mode is not nsSizeMode_Normal.
|
|
* This method will fail if the size mode is not nsSizeMode_Normal and
|
|
* the platform doesn't have the ability.
|
|
* This method will always succeed if the current size mode is
|
|
* nsSizeMode_Normal.
|
|
*
|
|
* @param aRect On return it holds the x, y, width and height of
|
|
* this widget.
|
|
*/
|
|
virtual MOZ_MUST_USE nsresult
|
|
GetRestoredBounds(LayoutDeviceIntRect& aRect) = 0;
|
|
|
|
/**
|
|
* Get this widget's client area bounds, if the window has a 3D border
|
|
* appearance this returns the area inside the border. The position is the
|
|
* position of the client area relative to the client area of the parent
|
|
* widget (for root widgets and popup widgets it is in screen coordinates).
|
|
*
|
|
* @return the x, y, width and height of the client area of this widget.
|
|
*/
|
|
virtual LayoutDeviceIntRect GetClientBounds() = 0;
|
|
|
|
/**
|
|
* Sets the non-client area dimensions of the window. Pass -1 to restore
|
|
* the system default frame size for that border. Pass zero to remove
|
|
* a border, or pass a specific value adjust a border. Units are in
|
|
* pixels. (DPI dependent)
|
|
*
|
|
* Platform notes:
|
|
* Windows: shrinking top non-client height will remove application
|
|
* icon and window title text. Glass desktops will refuse to set
|
|
* dimensions between zero and size < system default.
|
|
*
|
|
*/
|
|
NS_IMETHOD SetNonClientMargins(LayoutDeviceIntMargin& aMargins) = 0;
|
|
|
|
/**
|
|
* Get the client offset from the window origin.
|
|
*
|
|
* @return the x and y of the offset.
|
|
*/
|
|
virtual LayoutDeviceIntPoint GetClientOffset() = 0;
|
|
|
|
/**
|
|
* Equivalent to GetClientBounds but only returns the size.
|
|
*/
|
|
virtual LayoutDeviceIntSize GetClientSize() {
|
|
// Depending on the backend, overloading this method may be useful if
|
|
// requesting the client offset is expensive.
|
|
return GetClientBounds().Size();
|
|
}
|
|
|
|
/**
|
|
* Set the background color for this widget
|
|
*
|
|
* @param aColor the new background color
|
|
*
|
|
*/
|
|
|
|
virtual void SetBackgroundColor(const nscolor &aColor) { }
|
|
|
|
/**
|
|
* 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;
|
|
|
|
/**
|
|
* If a cursor type is currently cached locally for this widget, clear the
|
|
* cached cursor to force an update on the next SetCursor call.
|
|
*/
|
|
|
|
virtual void ClearCachedCursor() = 0;
|
|
|
|
/**
|
|
* Sets an image as the cursor for this widget.
|
|
*
|
|
* @param aCursor the cursor to set
|
|
* @param aX the X coordinate of the hotspot (from left).
|
|
* @param aY the Y coordinate of the hotspot (from top).
|
|
* @retval NS_ERROR_NOT_IMPLEMENTED if setting images as cursors is not
|
|
* supported
|
|
*/
|
|
NS_IMETHOD SetCursor(imgIContainer* aCursor,
|
|
uint32_t aHotspotX, uint32_t aHotspotY) = 0;
|
|
|
|
/**
|
|
* Get the window type of this widget.
|
|
*/
|
|
nsWindowType WindowType() { return mWindowType; }
|
|
|
|
/**
|
|
* Determines if this widget is one of the three types of plugin widgets.
|
|
*/
|
|
bool IsPlugin() {
|
|
return mWindowType == eWindowType_plugin ||
|
|
mWindowType == eWindowType_plugin_ipc_chrome ||
|
|
mWindowType == eWindowType_plugin_ipc_content;
|
|
}
|
|
|
|
/**
|
|
* Set the transparency mode 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/glass. 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 transparency/glass 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.
|
|
* Pixel RGB color values are already premultiplied with alpha channel values.
|
|
*/
|
|
virtual void SetTransparencyMode(nsTransparencyMode aMode) = 0;
|
|
|
|
/**
|
|
* Get the transparency mode of the top-level window that contains this
|
|
* widget.
|
|
*/
|
|
virtual nsTransparencyMode GetTransparencyMode() = 0;
|
|
|
|
/**
|
|
* This represents a command to set the bounds and clip region of
|
|
* a child widget.
|
|
*/
|
|
struct Configuration {
|
|
nsCOMPtr<nsIWidget> mChild;
|
|
uintptr_t mWindowID; // e10s specific, the unique plugin port id
|
|
bool mVisible; // e10s specific, widget visibility
|
|
LayoutDeviceIntRect mBounds;
|
|
nsTArray<LayoutDeviceIntRect> mClipRegion;
|
|
};
|
|
|
|
/**
|
|
* Sets the clip region of each mChild (which must actually be a child
|
|
* of this widget) to the union of the pixel rects given in
|
|
* mClipRegion, all relative to the top-left of the child
|
|
* widget. Clip regions are not implemented on all platforms and only
|
|
* need to actually work for children that are plugins.
|
|
*
|
|
* Also sets the bounds of each child to mBounds.
|
|
*
|
|
* This will invalidate areas of the children that have changed, but
|
|
* does not need to invalidate any part of this widget.
|
|
*
|
|
* Children should be moved in the order given; the array is
|
|
* sorted so to minimize unnecessary invalidation if children are
|
|
* moved in that order.
|
|
*/
|
|
virtual nsresult ConfigureChildren(const nsTArray<Configuration>& aConfigurations) = 0;
|
|
virtual nsresult SetWindowClipRegion(const nsTArray<LayoutDeviceIntRect>& aRects,
|
|
bool aIntersectWithExisting) = 0;
|
|
|
|
/**
|
|
* Appends to aRects the rectangles constituting this widget's clip
|
|
* region. If this widget is not clipped, appends a single rectangle
|
|
* (0, 0, bounds.width, bounds.height).
|
|
*/
|
|
virtual void GetWindowClipRegion(nsTArray<LayoutDeviceIntRect>* aRects) = 0;
|
|
|
|
/**
|
|
* Register or unregister native plugin widgets which receive Configuration
|
|
* data from the content process via the compositor.
|
|
*
|
|
* Lookups are used by the main thread via the compositor to lookup widgets
|
|
* based on a unique window id. On Windows and Linux this is the
|
|
* NS_NATIVE_PLUGIN_PORT (hwnd/XID). This tracking maintains a reference to
|
|
* widgets held. Consumers are responsible for removing widgets from this
|
|
* list.
|
|
*/
|
|
virtual void RegisterPluginWindowForRemoteUpdates() = 0;
|
|
virtual void UnregisterPluginWindowForRemoteUpdates() = 0;
|
|
static nsIWidget* LookupRegisteredPluginWindow(uintptr_t aWindowID);
|
|
|
|
/**
|
|
* Iterates across the list of registered plugin widgets and updates thier
|
|
* visibility based on which plugins are included in the 'visible' list.
|
|
*
|
|
* The compositor knows little about tabs, but it does know which plugin
|
|
* widgets are currently included in the visible layer tree. It calls this
|
|
* helper to hide widgets it knows nothing about.
|
|
*/
|
|
static void UpdateRegisteredPluginWindowVisibility(uintptr_t aOwnerWidget,
|
|
nsTArray<uintptr_t>& aPluginIds);
|
|
|
|
#if defined(XP_WIN)
|
|
/**
|
|
* Iterates over the list of registered plugins and for any that are owned
|
|
* by aOwnerWidget and visible it takes a snapshot.
|
|
*
|
|
* @param aOwnerWidget only captures visible widgets owned by this
|
|
*/
|
|
static void CaptureRegisteredPlugins(uintptr_t aOwnerWidget);
|
|
|
|
/**
|
|
* Take a scroll capture for this widget if possible.
|
|
*/
|
|
virtual void UpdateScrollCapture() = 0;
|
|
|
|
/**
|
|
* Creates an async ImageContainer to hold scroll capture images that can be
|
|
* used if the plugin is hidden during scroll.
|
|
* @return the async container ID of the created ImageContainer.
|
|
*/
|
|
virtual uint64_t CreateScrollCaptureContainer() = 0;
|
|
#endif
|
|
|
|
/**
|
|
* Set the shadow style of the window.
|
|
*
|
|
* Ignored on child widgets and on non-Mac platforms.
|
|
*/
|
|
virtual void SetWindowShadowStyle(int32_t aStyle) = 0;
|
|
|
|
/*
|
|
* On Mac OS X, this method shows or hides the pill button in the titlebar
|
|
* that's used to collapse the toolbar.
|
|
*
|
|
* Ignored on child widgets and on non-Mac platforms.
|
|
*/
|
|
virtual void SetShowsToolbarButton(bool aShow) = 0;
|
|
|
|
/*
|
|
* On Mac OS X Lion, this method shows or hides the full screen button in
|
|
* the titlebar that handles native full screen mode.
|
|
*
|
|
* Ignored on child widgets, non-Mac platforms, & pre-Lion Mac.
|
|
*/
|
|
virtual void SetShowsFullScreenButton(bool aShow) = 0;
|
|
|
|
enum WindowAnimationType {
|
|
eGenericWindowAnimation,
|
|
eDocumentWindowAnimation
|
|
};
|
|
|
|
/**
|
|
* Sets the kind of top-level window animation this widget should have. On
|
|
* Mac OS X, this causes a particular kind of animation to be shown when the
|
|
* window is first made visible.
|
|
*
|
|
* Ignored on child widgets and on non-Mac platforms.
|
|
*/
|
|
virtual void SetWindowAnimationType(WindowAnimationType aType) = 0;
|
|
|
|
/**
|
|
* Specifies whether the window title should be drawn even if the window
|
|
* contents extend into the titlebar. Ignored on windows that don't draw
|
|
* in the titlebar. Only implemented on OS X.
|
|
*/
|
|
virtual void SetDrawsTitle(bool aDrawTitle) {}
|
|
|
|
/**
|
|
* Indicates whether the widget should attempt to make titlebar controls
|
|
* easier to see on dark titlebar backgrounds.
|
|
*/
|
|
virtual void SetUseBrightTitlebarForeground(bool aBrightForeground) {}
|
|
|
|
/**
|
|
* Hide window chrome (borders, buttons) for this widget.
|
|
*
|
|
*/
|
|
NS_IMETHOD HideWindowChrome(bool aShouldHide) = 0;
|
|
|
|
enum FullscreenTransitionStage
|
|
{
|
|
eBeforeFullscreenToggle,
|
|
eAfterFullscreenToggle
|
|
};
|
|
|
|
/**
|
|
* Prepares for fullscreen transition and returns whether the widget
|
|
* supports fullscreen transition. If this method returns false,
|
|
* PerformFullscreenTransition() must never be called. Otherwise,
|
|
* caller should call that method twice with "before" and "after"
|
|
* stages respectively in order. In the latter case, this method may
|
|
* return some data via aData pointer. Caller must pass that data to
|
|
* PerformFullscreenTransition() if any, and caller is responsible
|
|
* for releasing that data.
|
|
*/
|
|
virtual bool PrepareForFullscreenTransition(nsISupports** aData) = 0;
|
|
|
|
/**
|
|
* Performs fullscreen transition. This method returns immediately,
|
|
* and will post aCallback to the main thread when the transition
|
|
* finishes.
|
|
*/
|
|
virtual void PerformFullscreenTransition(FullscreenTransitionStage aStage,
|
|
uint16_t aDuration,
|
|
nsISupports* aData,
|
|
nsIRunnable* aCallback) = 0;
|
|
|
|
/**
|
|
* Return the screen the widget is in, or null if we don't know.
|
|
*/
|
|
virtual already_AddRefed<nsIScreen> GetWidgetScreen() = 0;
|
|
|
|
/**
|
|
* Put the toplevel window into or out of fullscreen mode.
|
|
* If aTargetScreen is given, attempt to go fullscreen on that screen,
|
|
* if possible. (If not, it behaves as if aTargetScreen is null.)
|
|
* If !aFullScreen, aTargetScreen is ignored.
|
|
* aTargetScreen support is currently only implemented on Windows.
|
|
*
|
|
* @return NS_OK if the widget is setup properly for fullscreen and
|
|
* FullscreenChanged callback has been or will be called. If other
|
|
* value is returned, the caller should continue the change itself.
|
|
*/
|
|
virtual nsresult MakeFullScreen(bool aFullScreen,
|
|
nsIScreen* aTargetScreen = nullptr) = 0;
|
|
|
|
/**
|
|
* Same as MakeFullScreen, except that, on systems which natively
|
|
* support fullscreen transition, calling this method explicitly
|
|
* requests that behavior.
|
|
* It is currently only supported on OS X 10.7+.
|
|
*/
|
|
virtual nsresult MakeFullScreenWithNativeTransition(
|
|
bool aFullScreen, nsIScreen* aTargetScreen = nullptr)
|
|
{
|
|
return MakeFullScreen(aFullScreen, aTargetScreen);
|
|
}
|
|
|
|
/**
|
|
* Invalidate a specified rect for a widget so that it will be repainted
|
|
* later.
|
|
*/
|
|
NS_IMETHOD Invalidate(const LayoutDeviceIntRect& aRect) = 0;
|
|
|
|
enum LayerManagerPersistence
|
|
{
|
|
LAYER_MANAGER_CURRENT = 0,
|
|
LAYER_MANAGER_PERSISTENT
|
|
};
|
|
|
|
/**
|
|
* Return the widget's LayerManager. The layer tree for that
|
|
* LayerManager is what gets rendered to the widget.
|
|
*/
|
|
inline LayerManager* GetLayerManager()
|
|
{
|
|
return GetLayerManager(nullptr, mozilla::layers::LayersBackend::LAYERS_NONE,
|
|
LAYER_MANAGER_CURRENT);
|
|
}
|
|
|
|
inline LayerManager* GetLayerManager(LayerManagerPersistence aPersistence)
|
|
{
|
|
return GetLayerManager(nullptr, mozilla::layers::LayersBackend::LAYERS_NONE,
|
|
aPersistence);
|
|
}
|
|
|
|
/**
|
|
* Like GetLayerManager(), but prefers creating a layer manager of
|
|
* type |aBackendHint| instead of what would normally be created.
|
|
* LayersBackend::LAYERS_NONE means "no hint".
|
|
*/
|
|
virtual LayerManager* GetLayerManager(PLayerTransactionChild* aShadowManager,
|
|
LayersBackend aBackendHint,
|
|
LayerManagerPersistence aPersistence = LAYER_MANAGER_CURRENT) = 0;
|
|
|
|
/**
|
|
* Called before each layer manager transaction to allow any preparation
|
|
* for DrawWindowUnderlay/Overlay that needs to be on the main thread.
|
|
*
|
|
* Always called on the main thread.
|
|
*/
|
|
virtual void PrepareWindowEffects() = 0;
|
|
|
|
/**
|
|
* Called when Gecko knows which themed widgets exist in this window.
|
|
* The passed array contains an entry for every themed widget of the right
|
|
* type (currently only NS_THEME_TOOLBAR) within the window, except for
|
|
* themed widgets which are transformed or have effects applied to them
|
|
* (e.g. CSS opacity or filters).
|
|
* This could sometimes be called during display list construction
|
|
* outside of painting.
|
|
* If called during painting, it will be called before we actually
|
|
* paint anything.
|
|
*/
|
|
virtual void UpdateThemeGeometries(const nsTArray<ThemeGeometry>& aThemeGeometries) = 0;
|
|
|
|
/**
|
|
* Informs the widget about the region of the window that is opaque.
|
|
*
|
|
* @param aOpaqueRegion the region of the window that is opaque.
|
|
*/
|
|
virtual void UpdateOpaqueRegion(const LayoutDeviceIntRegion& aOpaqueRegion) {}
|
|
|
|
/**
|
|
* Informs the widget about the region of the window that is draggable.
|
|
*/
|
|
virtual void UpdateWindowDraggingRegion(const LayoutDeviceIntRegion& aRegion) {}
|
|
|
|
/**
|
|
* Tells the widget whether the given input block results in a swipe.
|
|
* Should be called in response to a WidgetWheelEvent that has
|
|
* mFlags.mCanTriggerSwipe set on it.
|
|
*/
|
|
virtual void ReportSwipeStarted(uint64_t aInputBlockId, bool aStartSwipe) {}
|
|
|
|
/**
|
|
* Internal methods
|
|
*/
|
|
|
|
//@{
|
|
virtual void AddChild(nsIWidget* aChild) = 0;
|
|
virtual void RemoveChild(nsIWidget* aChild) = 0;
|
|
virtual void* GetNativeData(uint32_t aDataType) = 0;
|
|
virtual void SetNativeData(uint32_t aDataType, uintptr_t aVal) = 0;
|
|
virtual void FreeNativeData(void * data, uint32_t aDataType) = 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;
|
|
|
|
/**
|
|
* Return this widget's origin in screen coordinates.
|
|
*
|
|
* @return screen coordinates stored in the x,y members
|
|
*/
|
|
virtual LayoutDeviceIntPoint WidgetToScreenOffset() = 0;
|
|
|
|
/**
|
|
* Given the specified client size, return the corresponding window size,
|
|
* which includes the area for the borders and titlebar. This method
|
|
* should work even when the window is not yet visible.
|
|
*/
|
|
virtual LayoutDeviceIntSize ClientToWindowSize(
|
|
const LayoutDeviceIntSize& aClientSize) = 0;
|
|
|
|
/**
|
|
* Dispatches an event to the widget
|
|
*
|
|
*/
|
|
NS_IMETHOD DispatchEvent(mozilla::WidgetGUIEvent* event,
|
|
nsEventStatus & aStatus) = 0;
|
|
|
|
/**
|
|
* Dispatches an event to APZ only.
|
|
* No-op in the child process.
|
|
*/
|
|
virtual void DispatchEventToAPZOnly(mozilla::WidgetInputEvent* aEvent) = 0;
|
|
|
|
/**
|
|
* Dispatches an event that must be handled by APZ first, when APZ is
|
|
* enabled. If invoked in the child process, it is forwarded to the
|
|
* parent process synchronously.
|
|
*/
|
|
virtual nsEventStatus DispatchInputEvent(mozilla::WidgetInputEvent* aEvent) = 0;
|
|
|
|
/**
|
|
* Confirm an APZ-aware event target. This should be used when APZ will
|
|
* not need a layers update to process the event.
|
|
*/
|
|
virtual void SetConfirmedTargetAPZC(uint64_t aInputBlockId,
|
|
const nsTArray<mozilla::layers::ScrollableLayerGuid>& aTargets) const = 0;
|
|
|
|
/**
|
|
* Returns true if APZ is in use, false otherwise.
|
|
*/
|
|
virtual bool AsyncPanZoomEnabled() const = 0;
|
|
|
|
/**
|
|
* Enables the dropping of files to a widget.
|
|
*/
|
|
virtual void EnableDragDrop(bool aEnable) = 0;
|
|
|
|
/**
|
|
* Enables/Disables system mouse capture.
|
|
* @param aCapture true enables mouse capture, false disables mouse capture
|
|
*
|
|
*/
|
|
virtual void CaptureMouse(bool aCapture) = 0;
|
|
|
|
/**
|
|
* Classify the window for the window manager. Mostly for X11.
|
|
*/
|
|
virtual void SetWindowClass(const nsAString& xulWinType) = 0;
|
|
|
|
/**
|
|
* Enables/Disables system capture of any and all events that would cause a
|
|
* popup to be rolled up. aListener should be set to a non-null value for
|
|
* any popups that are not managed by the popup manager.
|
|
* @param aDoCapture true enables capture, false disables capture
|
|
*
|
|
*/
|
|
virtual void CaptureRollupEvents(nsIRollupListener* aListener,
|
|
bool aDoCapture) = 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(int32_t aCycleCount) = 0;
|
|
|
|
/**
|
|
* Ask whether there user input events pending. All input events are
|
|
* included, including those not targeted at this nsIwidget instance.
|
|
*/
|
|
virtual bool HasPendingInputEvent() = 0;
|
|
|
|
/**
|
|
* Set the background color of the window titlebar for this widget. On Mac,
|
|
* for example, this will remove the grey gradient and bottom border and
|
|
* instead show a single, solid color.
|
|
*
|
|
* Ignored on any platform that does not support it. Ignored by widgets that
|
|
* do not represent windows.
|
|
*
|
|
* @param aColor The color to set the title bar background to. Alpha values
|
|
* other than fully transparent (0) are respected if possible
|
|
* on the platform. An alpha of 0 will cause the window to
|
|
* draw with the default style for the platform.
|
|
*
|
|
* @param aActive Whether the color should be applied to active or inactive
|
|
* windows.
|
|
*/
|
|
virtual void SetWindowTitlebarColor(nscolor aColor, bool aActive) = 0;
|
|
|
|
/**
|
|
* If set to true, the window will draw its contents into the titlebar
|
|
* instead of below it.
|
|
*
|
|
* Ignored on any platform that does not support it. Ignored by widgets that
|
|
* do not represent windows.
|
|
* May result in a resize event, so should only be called from places where
|
|
* reflow and painting is allowed.
|
|
*
|
|
* @param aState Whether drawing into the titlebar should be activated.
|
|
*/
|
|
virtual void SetDrawsInTitlebar(bool aState) = 0;
|
|
|
|
/*
|
|
* Determine whether the widget shows a resize widget. If it does,
|
|
* aResizerRect returns the resizer's rect.
|
|
*
|
|
* Returns false on any platform that does not support it.
|
|
*
|
|
* @param aResizerRect The resizer's rect in device pixels.
|
|
* @return Whether a resize widget is shown.
|
|
*/
|
|
virtual bool ShowsResizeIndicator(LayoutDeviceIntRect* aResizerRect) = 0;
|
|
|
|
/**
|
|
* Return the popup that was last rolled up, or null if there isn't one.
|
|
*/
|
|
virtual nsIContent* GetLastRollup() = 0;
|
|
|
|
/**
|
|
* Begin a window resizing drag, based on the event passed in.
|
|
*/
|
|
NS_IMETHOD BeginResizeDrag(mozilla::WidgetGUIEvent* aEvent,
|
|
int32_t aHorizontal,
|
|
int32_t aVertical) = 0;
|
|
|
|
/**
|
|
* Begin a window moving drag, based on the event passed in.
|
|
*/
|
|
NS_IMETHOD BeginMoveDrag(mozilla::WidgetMouseEvent* aEvent) = 0;
|
|
|
|
enum Modifiers {
|
|
CAPS_LOCK = 0x01, // when CapsLock is active
|
|
NUM_LOCK = 0x02, // when NumLock is active
|
|
SHIFT_L = 0x0100,
|
|
SHIFT_R = 0x0200,
|
|
CTRL_L = 0x0400,
|
|
CTRL_R = 0x0800,
|
|
ALT_L = 0x1000, // includes Option
|
|
ALT_R = 0x2000,
|
|
COMMAND_L = 0x4000,
|
|
COMMAND_R = 0x8000,
|
|
HELP = 0x10000,
|
|
FUNCTION = 0x100000,
|
|
NUMERIC_KEY_PAD = 0x01000000 // when the key is coming from the keypad
|
|
};
|
|
/**
|
|
* Utility method intended for testing. Dispatches native key events
|
|
* to this widget to simulate the press and release of a key.
|
|
* @param aNativeKeyboardLayout a *platform-specific* constant.
|
|
* On Mac, this is the resource ID for a 'uchr' or 'kchr' resource.
|
|
* On Windows, it is converted to a hex string and passed to
|
|
* LoadKeyboardLayout, see
|
|
* http://msdn.microsoft.com/en-us/library/ms646305(VS.85).aspx
|
|
* @param aNativeKeyCode a *platform-specific* keycode.
|
|
* On Windows, this is the virtual key code.
|
|
* @param aModifiers some combination of the above 'Modifiers' flags;
|
|
* not all flags will apply to all platforms. Mac ignores the _R
|
|
* modifiers. Windows ignores COMMAND, NUMERIC_KEY_PAD, HELP and
|
|
* FUNCTION.
|
|
* @param aCharacters characters that the OS would decide to generate
|
|
* from the event. On Windows, this is the charCode passed by
|
|
* WM_CHAR.
|
|
* @param aUnmodifiedCharacters characters that the OS would decide
|
|
* to generate from the event if modifier keys (other than shift)
|
|
* were assumed inactive. Needed on Mac, ignored on Windows.
|
|
* @param aObserver the observer that will get notified once the events
|
|
* have been dispatched.
|
|
* @return NS_ERROR_NOT_AVAILABLE to indicate that the keyboard
|
|
* layout is not supported and the event was not fired
|
|
*/
|
|
virtual nsresult SynthesizeNativeKeyEvent(int32_t aNativeKeyboardLayout,
|
|
int32_t aNativeKeyCode,
|
|
uint32_t aModifierFlags,
|
|
const nsAString& aCharacters,
|
|
const nsAString& aUnmodifiedCharacters,
|
|
nsIObserver* aObserver) = 0;
|
|
|
|
/**
|
|
* Utility method intended for testing. Dispatches native mouse events
|
|
* may even move the mouse cursor. On Mac the events are guaranteed to
|
|
* be sent to the window containing this widget, but on Windows they'll go
|
|
* to whatever's topmost on the screen at that position, so for
|
|
* cross-platform testing ensure that your window is at the top of the
|
|
* z-order.
|
|
* @param aPoint screen location of the mouse, in device
|
|
* pixels, with origin at the top left
|
|
* @param aNativeMessage *platform-specific* event type (e.g. on Mac,
|
|
* NSMouseMoved; on Windows, MOUSEEVENTF_MOVE, MOUSEEVENTF_LEFTDOWN etc)
|
|
* @param aModifierFlags *platform-specific* modifier flags (ignored
|
|
* on Windows)
|
|
* @param aObserver the observer that will get notified once the events
|
|
* have been dispatched.
|
|
*/
|
|
virtual nsresult SynthesizeNativeMouseEvent(LayoutDeviceIntPoint aPoint,
|
|
uint32_t aNativeMessage,
|
|
uint32_t aModifierFlags,
|
|
nsIObserver* aObserver) = 0;
|
|
|
|
/**
|
|
* A shortcut to SynthesizeNativeMouseEvent, abstracting away the native message.
|
|
* aPoint is location in device pixels to which the mouse pointer moves to.
|
|
* @param aObserver the observer that will get notified once the events
|
|
* have been dispatched.
|
|
*/
|
|
virtual nsresult SynthesizeNativeMouseMove(LayoutDeviceIntPoint aPoint,
|
|
nsIObserver* aObserver) = 0;
|
|
|
|
/**
|
|
* Utility method intended for testing. Dispatching native mouse scroll
|
|
* events may move the mouse cursor.
|
|
*
|
|
* @param aPoint Mouse cursor position in screen coordinates.
|
|
* In device pixels, the origin at the top left of
|
|
* the primary display.
|
|
* @param aNativeMessage Platform native message.
|
|
* @param aDeltaX The delta value for X direction. If the native
|
|
* message doesn't indicate X direction scrolling,
|
|
* this may be ignored.
|
|
* @param aDeltaY The delta value for Y direction. If the native
|
|
* message doesn't indicate Y direction scrolling,
|
|
* this may be ignored.
|
|
* @param aDeltaZ The delta value for Z direction. If the native
|
|
* message doesn't indicate Z direction scrolling,
|
|
* this may be ignored.
|
|
* @param aModifierFlags Must be values of Modifiers, or zero.
|
|
* @param aAdditionalFlags See nsIDOMWidnowUtils' consts and their
|
|
* document.
|
|
* @param aObserver The observer that will get notified once the
|
|
* events have been dispatched.
|
|
*/
|
|
virtual nsresult SynthesizeNativeMouseScrollEvent(LayoutDeviceIntPoint aPoint,
|
|
uint32_t aNativeMessage,
|
|
double aDeltaX,
|
|
double aDeltaY,
|
|
double aDeltaZ,
|
|
uint32_t aModifierFlags,
|
|
uint32_t aAdditionalFlags,
|
|
nsIObserver* aObserver) = 0;
|
|
|
|
/*
|
|
* TouchPointerState states for SynthesizeNativeTouchPoint. Match
|
|
* touch states in nsIDOMWindowUtils.idl.
|
|
*/
|
|
enum TouchPointerState {
|
|
// The pointer is in a hover state above the digitizer
|
|
TOUCH_HOVER = (1 << 0),
|
|
// The pointer is in contact with the digitizer
|
|
TOUCH_CONTACT = (1 << 1),
|
|
// The pointer has been removed from the digitizer detection area
|
|
TOUCH_REMOVE = (1 << 2),
|
|
// The pointer has been canceled. Will cancel any pending os level
|
|
// gestures that would triggered as a result of completion of the
|
|
// input sequence. This may not cancel moz platform related events
|
|
// that might get tirggered by input already delivered.
|
|
TOUCH_CANCEL = (1 << 3),
|
|
|
|
// ALL_BITS used for validity checking during IPC serialization
|
|
ALL_BITS = (1 << 4) - 1
|
|
};
|
|
|
|
/*
|
|
* Create a new or update an existing touch pointer on the digitizer.
|
|
* To trigger os level gestures, individual touch points should
|
|
* transition through a complete set of touch states which should be
|
|
* sent as individual messages.
|
|
*
|
|
* @param aPointerId The touch point id to create or update.
|
|
* @param aPointerState one or more of the touch states listed above
|
|
* @param aPoint coords of this event
|
|
* @param aPressure 0.0 -> 1.0 float val indicating pressure
|
|
* @param aOrientation 0 -> 359 degree value indicating the
|
|
* orientation of the pointer. Use 90 for normal taps.
|
|
* @param aObserver The observer that will get notified once the events
|
|
* have been dispatched.
|
|
*/
|
|
virtual nsresult SynthesizeNativeTouchPoint(uint32_t aPointerId,
|
|
TouchPointerState aPointerState,
|
|
LayoutDeviceIntPoint aPoint,
|
|
double aPointerPressure,
|
|
uint32_t aPointerOrientation,
|
|
nsIObserver* aObserver) = 0;
|
|
|
|
/*
|
|
* Helper for simulating a simple tap event with one touch point. When
|
|
* aLongTap is true, simulates a native long tap with a duration equal to
|
|
* ui.click_hold_context_menus.delay. This pref is compatible with the
|
|
* apzc long tap duration. Defaults to 1.5 seconds.
|
|
* @param aObserver The observer that will get notified once the events
|
|
* have been dispatched.
|
|
*/
|
|
virtual nsresult SynthesizeNativeTouchTap(LayoutDeviceIntPoint aPoint,
|
|
bool aLongTap,
|
|
nsIObserver* aObserver);
|
|
|
|
/*
|
|
* Cancels all active simulated touch input points and pending long taps.
|
|
* Native widgets should track existing points such that they can clear the
|
|
* digitizer state when this call is made.
|
|
* @param aObserver The observer that will get notified once the touch
|
|
* sequence has been cleared.
|
|
*/
|
|
virtual nsresult ClearNativeTouchSequence(nsIObserver* aObserver);
|
|
|
|
virtual void StartAsyncScrollbarDrag(const AsyncDragMetrics& aDragMetrics) = 0;
|
|
|
|
// If this widget supports out-of-process compositing, it can override
|
|
// this method to provide additional information to the compositor.
|
|
virtual void GetCompositorWidgetInitData(mozilla::widget::CompositorWidgetInitData* aInitData)
|
|
{}
|
|
|
|
private:
|
|
class LongTapInfo
|
|
{
|
|
public:
|
|
LongTapInfo(int32_t aPointerId, LayoutDeviceIntPoint& aPoint,
|
|
mozilla::TimeDuration aDuration,
|
|
nsIObserver* aObserver) :
|
|
mPointerId(aPointerId),
|
|
mPosition(aPoint),
|
|
mDuration(aDuration),
|
|
mObserver(aObserver),
|
|
mStamp(mozilla::TimeStamp::Now())
|
|
{
|
|
}
|
|
|
|
int32_t mPointerId;
|
|
LayoutDeviceIntPoint mPosition;
|
|
mozilla::TimeDuration mDuration;
|
|
nsCOMPtr<nsIObserver> mObserver;
|
|
mozilla::TimeStamp mStamp;
|
|
};
|
|
|
|
static void OnLongTapTimerCallback(nsITimer* aTimer, void* aClosure);
|
|
|
|
mozilla::UniquePtr<LongTapInfo> mLongTapTouchPoint;
|
|
nsCOMPtr<nsITimer> mLongTapTimer;
|
|
static int32_t sPointerIdCounter;
|
|
|
|
public:
|
|
/**
|
|
* Activates a native menu item at the position specified by the index
|
|
* string. The index string is a string of positive integers separated
|
|
* by the "|" (pipe) character. The last integer in the string represents
|
|
* the item index in a submenu located using the integers preceding it.
|
|
*
|
|
* Example: 1|0|4
|
|
* In this string, the first integer represents the top-level submenu
|
|
* in the native menu bar. Since the integer is 1, it is the second submeu
|
|
* in the native menu bar. Within that, the first item (index 0) is a
|
|
* submenu, and we want to activate the 5th item within that submenu.
|
|
*/
|
|
virtual nsresult ActivateNativeMenuItemAt(const nsAString& indexString) = 0;
|
|
|
|
/**
|
|
* This is used for native menu system testing.
|
|
*
|
|
* Updates a native menu at the position specified by the index string.
|
|
* The index string is a string of positive integers separated by the "|"
|
|
* (pipe) character.
|
|
*
|
|
* Example: 1|0|4
|
|
* In this string, the first integer represents the top-level submenu
|
|
* in the native menu bar. Since the integer is 1, it is the second submeu
|
|
* in the native menu bar. Within that, the first item (index 0) is a
|
|
* submenu, and we want to update submenu at index 4 within that submenu.
|
|
*
|
|
* If this is called with an empty string it forces a full reload of the
|
|
* menu system.
|
|
*/
|
|
virtual nsresult ForceUpdateNativeMenuAt(const nsAString& indexString) = 0;
|
|
|
|
/**
|
|
* This is used for testing macOS service menu code.
|
|
*
|
|
* @param aResult - the current text selection. Is empty if no selection.
|
|
* @return nsresult - whether or not aResult was assigned the selected text.
|
|
*/
|
|
NS_IMETHOD
|
|
GetSelectionAsPlaintext(nsAString& aResult)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
/**
|
|
* Notify IME of the specified notification.
|
|
*
|
|
* @return If the notification is mouse button event and it's consumed by
|
|
* IME, this returns NS_SUCCESS_EVENT_CONSUMED.
|
|
*/
|
|
NS_IMETHOD NotifyIME(const IMENotification& aIMENotification) = 0;
|
|
|
|
/**
|
|
* Start plugin IME. If this results in a string getting committed, the
|
|
* result is in aCommitted (otherwise aCommitted is empty).
|
|
*
|
|
* aKeyboardEvent The event with which plugin IME is to be started
|
|
* panelX and panelY Location in screen coordinates of the IME input panel
|
|
* (should be just under the plugin)
|
|
* aCommitted The string committed during IME -- otherwise empty
|
|
*/
|
|
NS_IMETHOD StartPluginIME(const mozilla::WidgetKeyboardEvent& aKeyboardEvent,
|
|
int32_t aPanelX, int32_t aPanelY,
|
|
nsString& aCommitted) = 0;
|
|
|
|
/**
|
|
* Tells the widget whether or not a plugin (inside the widget) has the
|
|
* keyboard focus. Should be sent when the keyboard focus changes too or
|
|
* from a plugin.
|
|
*
|
|
* aFocused Whether or not a plugin is focused
|
|
*/
|
|
virtual void SetPluginFocused(bool& aFocused) = 0;
|
|
|
|
/*
|
|
* Tell the plugin has focus. It is unnecessary to use IPC
|
|
*/
|
|
bool PluginHasFocus()
|
|
{
|
|
return GetInputContext().mIMEState.mEnabled == IMEState::PLUGIN;
|
|
}
|
|
|
|
/**
|
|
* Set IME candidate window position by windowless plugin.
|
|
*/
|
|
virtual void SetCandidateWindowForPlugin(
|
|
const mozilla::widget::CandidateWindowPosition& aPosition) = 0;
|
|
|
|
/**
|
|
* Handle default action when PluginEvent isn't handled
|
|
*/
|
|
virtual void DefaultProcOfPluginEvent(
|
|
const mozilla::WidgetPluginEvent& aEvent) = 0;
|
|
|
|
/*
|
|
* Notifies the input context changes.
|
|
*/
|
|
NS_IMETHOD_(void) SetInputContext(const InputContext& aContext,
|
|
const InputContextAction& aAction) = 0;
|
|
|
|
/*
|
|
* Get current input context.
|
|
*/
|
|
NS_IMETHOD_(InputContext) GetInputContext() = 0;
|
|
|
|
/**
|
|
* Get native IME context. This is different from GetNativeData() with
|
|
* NS_RAW_NATIVE_IME_CONTEXT, the result is unique even if in a remote
|
|
* process.
|
|
*/
|
|
NS_IMETHOD_(NativeIMEContext) GetNativeIMEContext();
|
|
|
|
/*
|
|
* Given a WidgetKeyboardEvent, this method synthesizes a corresponding
|
|
* native (OS-level) event for it. This method allows tests to simulate
|
|
* keystrokes that trigger native key bindings (which require a native
|
|
* event).
|
|
*/
|
|
NS_IMETHOD AttachNativeKeyEvent(mozilla::WidgetKeyboardEvent& aEvent) = 0;
|
|
|
|
/*
|
|
* Execute native key bindings for aType.
|
|
*/
|
|
typedef void (*DoCommandCallback)(mozilla::Command, void*);
|
|
enum NativeKeyBindingsType
|
|
{
|
|
NativeKeyBindingsForSingleLineEditor,
|
|
NativeKeyBindingsForMultiLineEditor,
|
|
NativeKeyBindingsForRichTextEditor
|
|
};
|
|
NS_IMETHOD_(bool) ExecuteNativeKeyBinding(
|
|
NativeKeyBindingsType aType,
|
|
const mozilla::WidgetKeyboardEvent& aEvent,
|
|
DoCommandCallback aCallback,
|
|
void* aCallbackData) = 0;
|
|
|
|
/*
|
|
* Retrieves preference for IME updates
|
|
*/
|
|
virtual nsIMEUpdatePreference GetIMEUpdatePreference() = 0;
|
|
|
|
/*
|
|
* Call this method when a dialog is opened which has a default button.
|
|
* The button's rectangle should be supplied in aButtonRect.
|
|
*/
|
|
NS_IMETHOD OnDefaultButtonLoaded(const LayoutDeviceIntRect& aButtonRect) = 0;
|
|
|
|
/**
|
|
* Return true if this process shouldn't use platform widgets, and
|
|
* so should use PuppetWidgets instead. If this returns true, the
|
|
* result of creating and using a platform widget is undefined,
|
|
* and likely to end in crashes or other buggy behavior.
|
|
*/
|
|
static bool
|
|
UsePuppetWidgets()
|
|
{
|
|
return XRE_IsContentProcess();
|
|
}
|
|
|
|
/**
|
|
* Allocate and return a "puppet widget" that doesn't directly
|
|
* correlate to a platform widget; platform events and data must
|
|
* be fed to it. Currently used in content processes. NULL is
|
|
* returned if puppet widgets aren't supported in this build
|
|
* config, on this platform, or for this process type.
|
|
*
|
|
* This function is called "Create" to match CreateInstance().
|
|
* The returned widget must still be nsIWidget::Create()d.
|
|
*/
|
|
static already_AddRefed<nsIWidget>
|
|
CreatePuppetWidget(TabChild* aTabChild);
|
|
|
|
/**
|
|
* Allocate and return a "plugin proxy widget", a subclass of PuppetWidget
|
|
* used in wrapping a PPluginWidget connection for remote widgets. Note
|
|
* this call creates the base object, it does not create the widget. Use
|
|
* nsIWidget's Create to do this.
|
|
*/
|
|
static already_AddRefed<nsIWidget>
|
|
CreatePluginProxyWidget(TabChild* aTabChild,
|
|
mozilla::plugins::PluginWidgetChild* aActor);
|
|
|
|
/**
|
|
* Reparent this widget's native widget.
|
|
* @param aNewParent the native widget of aNewParent is the new native
|
|
* parent widget
|
|
*/
|
|
virtual void ReparentNativeWidget(nsIWidget* aNewParent) = 0;
|
|
|
|
/**
|
|
* Return true if widget has it's own GL context
|
|
*/
|
|
virtual bool HasGLContext() { return false; }
|
|
|
|
/**
|
|
* Returns true to indicate that this widget paints an opaque background
|
|
* that we want to be visible under the page, so layout should not force
|
|
* a default background.
|
|
*/
|
|
virtual bool WidgetPaintsBackground() { return false; }
|
|
|
|
virtual bool NeedsPaint() {
|
|
return IsVisible() && !GetBounds().IsEmpty();
|
|
}
|
|
|
|
/**
|
|
* Get the natural bounds of this widget. This method is only
|
|
* meaningful for widgets for which Gecko implements screen
|
|
* rotation natively. When this is the case, GetBounds() returns
|
|
* the widget bounds taking rotation into account, and
|
|
* GetNaturalBounds() returns the bounds *not* taking rotation
|
|
* into account.
|
|
*
|
|
* No code outside of the composition pipeline should know or care
|
|
* about this. If you're not an agent of the compositor, you
|
|
* probably shouldn't call this method.
|
|
*/
|
|
virtual LayoutDeviceIntRect GetNaturalBounds() {
|
|
return GetBounds();
|
|
}
|
|
|
|
/**
|
|
* Set size constraints on the window size such that it is never less than
|
|
* the specified minimum size and never larger than the specified maximum
|
|
* size. The size constraints are sizes of the outer rectangle including
|
|
* the window frame and title bar. Use 0 for an unconstrained minimum size
|
|
* and NS_MAXSIZE for an unconstrained maximum size. Note that this method
|
|
* does not necessarily change the size of a window to conform to this size,
|
|
* thus Resize should be called afterwards.
|
|
*
|
|
* @param aConstraints: the size constraints in device pixels
|
|
*/
|
|
virtual void SetSizeConstraints(const SizeConstraints& aConstraints) = 0;
|
|
|
|
/**
|
|
* Return the size constraints currently observed by the widget.
|
|
*
|
|
* @return the constraints in device pixels
|
|
*/
|
|
virtual const SizeConstraints GetSizeConstraints() = 0;
|
|
|
|
/**
|
|
* If this is owned by a TabChild, return that. Otherwise return
|
|
* null.
|
|
*/
|
|
virtual TabChild* GetOwningTabChild() { return nullptr; }
|
|
|
|
/**
|
|
* If this isn't directly compositing to its window surface,
|
|
* return the compositor which is doing that on our behalf.
|
|
*/
|
|
virtual CompositorBridgeChild* GetRemoteRenderer()
|
|
{ return nullptr; }
|
|
|
|
/**
|
|
* Some platforms (only cocoa right now) round widget coordinates to the
|
|
* nearest even pixels (see bug 892994), this function allows us to
|
|
* determine how widget coordinates will be rounded.
|
|
*/
|
|
virtual int32_t RoundsWidgetCoordinatesTo() { return 1; }
|
|
|
|
virtual void UpdateZoomConstraints(const uint32_t& aPresShellId,
|
|
const FrameMetrics::ViewID& aViewId,
|
|
const mozilla::Maybe<ZoomConstraints>& aConstraints) {};
|
|
|
|
/**
|
|
* GetTextEventDispatcher() returns TextEventDispatcher belonging to the
|
|
* widget. Note that this never returns nullptr.
|
|
*/
|
|
NS_IMETHOD_(TextEventDispatcher*) GetTextEventDispatcher() = 0;
|
|
|
|
/**
|
|
* GetNativeTextEventDispatcherListener() returns a
|
|
* TextEventDispatcherListener instance which is used when the widget
|
|
* instance handles native IME and/or keyboard events.
|
|
*/
|
|
NS_IMETHOD_(TextEventDispatcherListener*)
|
|
GetNativeTextEventDispatcherListener() = 0;
|
|
|
|
virtual void ZoomToRect(const uint32_t& aPresShellId,
|
|
const FrameMetrics::ViewID& aViewId,
|
|
const CSSRect& aRect,
|
|
const uint32_t& aFlags) = 0;
|
|
|
|
/**
|
|
* OnWindowedPluginKeyEvent() is called when native key event is
|
|
* received in the focused plugin process directly in PluginInstanceChild.
|
|
*
|
|
* @param aKeyEventData The native key event data. The actual type
|
|
* copied into NativeEventData depends on the
|
|
* caller. Please check PluginInstanceChild.
|
|
* @param aCallback Callback interface. When this returns
|
|
* NS_SUCCESS_EVENT_HANDLED_ASYNCHRONOUSLY,
|
|
* the event handler has to call this callback.
|
|
* Otherwise, the caller should do that instead.
|
|
* @return NS_ERROR_* if this fails to handle the event.
|
|
* NS_SUCCESS_EVENT_CONSUMED if the key event is
|
|
* consumed.
|
|
* NS_OK if the key event isn't consumed.
|
|
* NS_SUCCESS_EVENT_HANDLED_ASYNCHRONOUSLY if the
|
|
* key event will be handled asynchronously.
|
|
*/
|
|
virtual nsresult OnWindowedPluginKeyEvent(
|
|
const mozilla::NativeEventData& aKeyEventData,
|
|
nsIKeyEventInPluginCallback* aCallback);
|
|
|
|
|
|
/**
|
|
* LookUpDictionary shows the dictionary for the word around current point.
|
|
*
|
|
* @param aText the word to look up dictiorary.
|
|
* @param aFontRangeArray text decoration of aText
|
|
* @param aIsVertical true if the word is vertical layout
|
|
* @param aPoint top-left point of aText
|
|
*/
|
|
virtual void LookUpDictionary(
|
|
const nsAString& aText,
|
|
const nsTArray<mozilla::FontRange>& aFontRangeArray,
|
|
const bool aIsVertical,
|
|
const LayoutDeviceIntPoint& aPoint)
|
|
{ }
|
|
|
|
protected:
|
|
/**
|
|
* Like GetDefaultScale, but taking into account only the system settings
|
|
* and ignoring Gecko preferences.
|
|
*/
|
|
virtual double GetDefaultScaleInternal() { return 1.0; }
|
|
|
|
// 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* MOZ_NON_OWNING_REF mLastChild;
|
|
nsCOMPtr<nsIWidget> mNextSibling;
|
|
nsIWidget* MOZ_NON_OWNING_REF mPrevSibling;
|
|
// When Destroy() is called, the sub class should set this true.
|
|
bool mOnDestroyCalled;
|
|
nsWindowType mWindowType;
|
|
int32_t mZIndex;
|
|
};
|
|
|
|
NS_DEFINE_STATIC_IID_ACCESSOR(nsIWidget, NS_IWIDGET_IID)
|
|
|
|
#endif // nsIWidget_h__
|