зеркало из https://github.com/mozilla/gecko-dev.git
478 строки
16 KiB
C++
478 строки
16 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public
|
|
* License Version 1.1 (the "License"); you may not use this file
|
|
* except in compliance with the License. You may obtain a copy of
|
|
* the License at http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS
|
|
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
|
|
* implied. See the License for the specific language governing
|
|
* rights and limitations under the License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*/
|
|
|
|
#ifndef nsIViewManager_h___
|
|
#define nsIViewManager_h___
|
|
|
|
#include "nscore.h"
|
|
#include "nsISupports.h"
|
|
#include "nsCoord.h"
|
|
#include "nsIView.h"
|
|
|
|
class nsIRegion;
|
|
class nsIEvent;
|
|
class nsIPresContext;
|
|
class nsIView;
|
|
class nsIScrollableView;
|
|
class nsIWidget;
|
|
class nsICompositeListener;
|
|
struct nsRect;
|
|
|
|
enum nsContentQuality {
|
|
nsContentQuality_kGood = 0,
|
|
nsContentQuality_kFair,
|
|
nsContentQuality_kPoor,
|
|
nsContentQuality_kUnknown
|
|
};
|
|
|
|
#define NS_IVIEWMANAGER_IID \
|
|
{ 0x3a8863d0, 0xa7f3, 0x11d1, \
|
|
{ 0xa8, 0x24, 0x00, 0x40, 0x95, 0x9a, 0x28, 0xc9 } }
|
|
|
|
class nsIViewManager : public nsISupports
|
|
{
|
|
public:
|
|
|
|
static const nsIID& GetIID() { static nsIID iid = NS_IVIEWMANAGER_IID; return iid; }
|
|
/**
|
|
* Initialize the ViewManager
|
|
* Note: this instance does not hold a reference to the viewobserver
|
|
* because it holds a reference to this instance.
|
|
* @param aContext the device context to use.
|
|
* @result The result of the initialization, NS_OK if no errors
|
|
*/
|
|
NS_IMETHOD Init(nsIDeviceContext* aContext) = 0;
|
|
|
|
/**
|
|
* Get the root of the view tree.
|
|
* @result the root view
|
|
*/
|
|
NS_IMETHOD GetRootView(nsIView *&aView) = 0;
|
|
|
|
/**
|
|
* Set the root of the view tree. Does not destroy the current root view.
|
|
* One of following must be true:
|
|
* a) the aWidget parameter is an nsIWidget instance to render into
|
|
* that is not owned by any view or
|
|
* b) aView has a nsIWidget instance or
|
|
* c) aView has a parent view managed by a different view manager
|
|
* @param aView view to set as root
|
|
* @param aWidget widget to render into. (Can not be owned by a view)
|
|
*/
|
|
NS_IMETHOD SetRootView(nsIView *aView, nsIWidget* aWidget = nsnull) = 0;
|
|
|
|
/**
|
|
* Get the current framerate i.e. the rate at which timed
|
|
* refreshes occur. A framerate of 0 indicates that timed refreshes
|
|
* should not occur. framerate is in terms of frames per second
|
|
* @result the update rate in terms of frames per second
|
|
*/
|
|
NS_IMETHOD GetFrameRate(PRUint32& aRate) = 0;
|
|
|
|
/**
|
|
* Set the current framerate.
|
|
* @param frameRate new update rate. see GetFrameRate for more info
|
|
* @result the call may need to create a timer and the success
|
|
* status will be returned. NS_OK means all is well
|
|
*/
|
|
NS_IMETHOD SetFrameRate(PRUint32 frameRate) = 0;
|
|
|
|
/**
|
|
* Get the dimensions of the root window. The dimensions are in
|
|
* twips
|
|
* @param width out parameter for width of window in twips
|
|
* @param height out parameter for height of window in twips
|
|
*/
|
|
NS_IMETHOD GetWindowDimensions(nscoord *width, nscoord *height) = 0;
|
|
|
|
/**
|
|
* Set the dimensions of the root window.
|
|
* Called if the root window is resized. The dimensions are in
|
|
* twips
|
|
* @param width of window in twips
|
|
* @param height of window in twips
|
|
*/
|
|
NS_IMETHOD SetWindowDimensions(nscoord width, nscoord height) = 0;
|
|
|
|
/**
|
|
* Reset the state of scrollbars and the scrolling region
|
|
*/
|
|
NS_IMETHOD ResetScrolling(void) = 0;
|
|
|
|
/**
|
|
* Called to force a redrawing of any dirty areas.
|
|
*/
|
|
NS_IMETHOD Composite(void) = 0;
|
|
|
|
/**
|
|
* Called to inform the view manager that the entire area of a view
|
|
* is dirty and needs to be redrawn.
|
|
* @param aView view to paint. should be root view
|
|
* @param aUpdateFlags see bottom of nsIViewManager.h for description
|
|
*/
|
|
NS_IMETHOD UpdateView(nsIView *aView, PRUint32 aUpdateFlags) = 0;
|
|
|
|
/**
|
|
* Called to inform the view manager that some portion of a view
|
|
* is dirty and needs to be redrawn. The rect passed in
|
|
* should be in the view's coordinate space.
|
|
* @param aView view to paint. should be root view
|
|
* @param rect rect to mark as damaged
|
|
* @param aUpdateFlags see bottom of nsIViewManager.h for description
|
|
*/
|
|
NS_IMETHOD UpdateView(nsIView *aView, const nsRect &aRect, PRUint32 aUpdateFlags) = 0;
|
|
|
|
/**
|
|
* Called to inform the view manager that it should redraw all views.
|
|
* @param aView view to paint. should be root view
|
|
* @param aUpdateFlags see bottom of nsIViewManager.h for description
|
|
*/
|
|
NS_IMETHOD UpdateAllViews(PRUint32 aUpdateFlags) = 0;
|
|
|
|
/**
|
|
* Called to dispatch an event to the appropriate view. Often called
|
|
* as a result of receiving a mouse or keyboard event from the widget
|
|
* event system.
|
|
* @param event event to dispatch
|
|
* @result event handling status
|
|
*/
|
|
NS_IMETHOD DispatchEvent(nsGUIEvent *aEvent, nsEventStatus* aStatus) = 0;
|
|
|
|
/**
|
|
* Used to grab/capture all mouse events for a specific view,
|
|
* irrespective of the cursor position at which the
|
|
* event occurred.
|
|
* @param aView view to capture mouse events
|
|
* @result event handling status
|
|
*/
|
|
NS_IMETHOD GrabMouseEvents(nsIView *aView, PRBool& aResult) = 0;
|
|
|
|
/**
|
|
* Used to grab/capture all keyboard events for a specific view,
|
|
* irrespective of the cursor position at which the
|
|
* event occurred.
|
|
* @param aView view to capture keyboard events
|
|
* @result event handling status
|
|
*/
|
|
NS_IMETHOD GrabKeyEvents(nsIView *aView, PRBool& aResult) = 0;
|
|
|
|
/**
|
|
* Get the current view, if any, that's capturing mouse events.
|
|
* @result view that is capturing mouse events or nsnull
|
|
*/
|
|
NS_IMETHOD GetMouseEventGrabber(nsIView *&aView) = 0;
|
|
|
|
/**
|
|
* Get the current view, if any, that's capturing keyboard events.
|
|
* @result view that is capturing keyboard events or nsnull
|
|
*/
|
|
NS_IMETHOD GetKeyEventGrabber(nsIView *&aView) = 0;
|
|
|
|
/**
|
|
* Given a parent view, insert another view as its child. If above
|
|
* is PR_TRUE, the view is inserted above (in z-order) the sibling. If
|
|
* it is PR_FALSE, the view is inserted below.
|
|
* The view manager generates the appopriate dirty regions.
|
|
* @param parent parent view
|
|
* @param child child view
|
|
* @param sibling sibling view
|
|
* @param above boolean above or below state
|
|
*/
|
|
NS_IMETHOD InsertChild(nsIView *aParent, nsIView *aChild, nsIView *aSibling,
|
|
PRBool aAbove) = 0;
|
|
|
|
/**
|
|
* Given a parent view, insert another view as its child. The zindex
|
|
* indicates where the child should be inserted relative to other
|
|
* children of the parent.
|
|
* The view manager generates the appopriate dirty regions.
|
|
* @param parent parent view
|
|
* @param child child view
|
|
* @param zindex z depth of child
|
|
*/
|
|
NS_IMETHOD InsertChild(nsIView *aParent, nsIView *aChild,
|
|
PRInt32 aZIndex) = 0;
|
|
|
|
/**
|
|
* Remove a specific child of a view.
|
|
* The view manager generates the appopriate dirty regions.
|
|
* @param parent parent view
|
|
* @param child child view
|
|
*/
|
|
NS_IMETHOD RemoveChild(nsIView *aParent, nsIView *aChild) = 0;
|
|
|
|
/**
|
|
* Move a view's position by the specified amount.
|
|
* The view manager generates the appopriate dirty regions.
|
|
* @param aView view to move
|
|
* @param x x offset to add to current view position
|
|
* @param y y offset to add to current view position
|
|
*/
|
|
NS_IMETHOD MoveViewBy(nsIView *aView, nscoord aX, nscoord aY) = 0;
|
|
|
|
/**
|
|
* Move a view to the specified position,
|
|
* provided in parent coordinates.
|
|
* The view manager generates the appopriate dirty regions.
|
|
* @param aView view to move
|
|
* @param x x value for new view position
|
|
* @param y y value for new view position
|
|
*/
|
|
NS_IMETHOD MoveViewTo(nsIView *aView, nscoord aX, nscoord aY) = 0;
|
|
|
|
/**
|
|
* Resize a view to the specified width and height.
|
|
* The view manager generates the appopriate dirty regions.
|
|
* @param aView view to move
|
|
* @param width new view width
|
|
* @param height new view height
|
|
*/
|
|
NS_IMETHOD ResizeView(nsIView *aView, nscoord aWidth, nscoord aHeight) = 0;
|
|
|
|
/**
|
|
* Set the clip of a view.
|
|
* The view manager generates the appopriate dirty regions.
|
|
* @param aView view to to clip rect on
|
|
* @param rect new clipping rect for view
|
|
*/
|
|
NS_IMETHOD SetViewClip(nsIView *aView, nsRect *aRect) = 0;
|
|
|
|
/**
|
|
* Set the visibility of a view.
|
|
* The view manager generates the appopriate dirty regions.
|
|
* @param aView view to change visibility state of
|
|
* @param visible new visibility state
|
|
*/
|
|
NS_IMETHOD SetViewVisibility(nsIView *aView, nsViewVisibility aVisible) = 0;
|
|
|
|
/**
|
|
* Set the z-index of a view. Positive z-indices mean that a view
|
|
* is above its parent in z-order. Negative z-indices mean that a
|
|
* view is below its parent.
|
|
* The view manager generates the appopriate dirty regions.
|
|
* @param aView view to change z depth of
|
|
* @param zindex new z depth
|
|
*/
|
|
NS_IMETHOD SetViewZIndex(nsIView *aView, PRInt32 aZindex) = 0;
|
|
|
|
/**
|
|
* Indicate that the z-index of a view is "auto". An "auto" z-index
|
|
* means that the view does not define a new stacking context,
|
|
* which means that the z-indicies of the view's children are
|
|
* relative to the view's siblings.
|
|
* The view manager generates the appopriate dirty regions.
|
|
* @param aView view to change z depth of
|
|
* @param zindex new z depth
|
|
*/
|
|
NS_IMETHOD SetViewAutoZIndex(nsIView *aView, PRBool aAutoZIndex) = 0;
|
|
|
|
/**
|
|
* Used to move a view above another in z-order.
|
|
* The view manager generates the appopriate dirty regions.
|
|
* @param aView view to change z depth of
|
|
* @param other view to move aView above
|
|
*/
|
|
NS_IMETHOD MoveViewAbove(nsIView *aView, nsIView *aOther) = 0;
|
|
|
|
/**
|
|
* Used to move a view below another in z-order.
|
|
* The view manager generates the appopriate dirty regions.
|
|
* @param aView view to change z depth of
|
|
* @param other view to move aView below
|
|
*/
|
|
NS_IMETHOD MoveViewBelow(nsIView *aView, nsIView *aOther) = 0;
|
|
|
|
/**
|
|
* Returns whether a view is actually shown (based on its visibility
|
|
* and that of its ancestors).
|
|
* @param aView view to query visibilty of
|
|
* @result PR_TRUE if visible, else PR_FALSE
|
|
*/
|
|
NS_IMETHOD IsViewShown(nsIView *aView, PRBool &aResult) = 0;
|
|
|
|
/**
|
|
* Returns the clipping area of a view in absolute coordinates.
|
|
* @param aView view to query clip rect of
|
|
* @param rect to set with view's clipping rect
|
|
* @result PR_TRUE if there is a clip rect, else PR_FALSE
|
|
*/
|
|
NS_IMETHOD GetViewClipAbsolute(nsIView *aView, nsRect *aRect, PRBool &aResult) = 0;
|
|
|
|
/**
|
|
* Used set the transparency status of the content in a view. see
|
|
* nsIView.HasTransparency().
|
|
* @param aTransparent PR_TRUE if there are transparent areas, PR_FALSE otherwise.
|
|
*/
|
|
NS_IMETHOD SetViewContentTransparency(nsIView *aView, PRBool aTransparent) = 0;
|
|
|
|
/**
|
|
* Note: This didn't exist in 4.0. Called to set the opacity of a view.
|
|
* A value of 0.0 means completely transparent. A value of 1.0 means
|
|
* completely opaque.
|
|
* @param opacity new opacity value
|
|
*/
|
|
NS_IMETHOD SetViewOpacity(nsIView *aView, float aOpacity) = 0;
|
|
|
|
/**
|
|
* Set the view observer associated with this manager
|
|
* @param aObserver - new observer
|
|
* @result error status
|
|
*/
|
|
NS_IMETHOD SetViewObserver(nsIViewObserver *aObserver) = 0;
|
|
|
|
/**
|
|
* Get the view observer associated with this manager
|
|
* @param aObserver - out parameter for observer
|
|
* @result error status
|
|
*/
|
|
NS_IMETHOD GetViewObserver(nsIViewObserver *&aObserver) = 0;
|
|
|
|
/**
|
|
* Get the device context associated with this manager
|
|
* @result device context
|
|
*/
|
|
NS_IMETHOD GetDeviceContext(nsIDeviceContext *&aContext) = 0;
|
|
|
|
/**
|
|
* Select whether quality level should be displayed in root view
|
|
* @param aShow if PR_TRUE, quality level will be displayed, else hidden
|
|
*/
|
|
NS_IMETHOD ShowQuality(PRBool aShow) = 0;
|
|
|
|
/**
|
|
* Query whether quality level should be displayed in view frame
|
|
* @return if PR_TRUE, quality level will be displayed, else hidden
|
|
*/
|
|
NS_IMETHOD GetShowQuality(PRBool &aResult) = 0;
|
|
|
|
/**
|
|
* Select whether quality level should be displayed in root view
|
|
* @param aShow if PR_TRUE, quality level will be displayed, else hidden
|
|
*/
|
|
NS_IMETHOD SetQuality(nsContentQuality aQuality) = 0;
|
|
|
|
/**
|
|
* prevent the view manager from refreshing.
|
|
* @return error status
|
|
*/
|
|
NS_IMETHOD DisableRefresh(void) = 0;
|
|
|
|
/**
|
|
* allow the view manager to refresh. this may cause a synchronous
|
|
* paint to occur inside the call.
|
|
* @param aUpdateFlags see bottom of nsIViewManager.h for description
|
|
* @return error status
|
|
*/
|
|
NS_IMETHOD EnableRefresh(PRUint32 aUpdateFlags) = 0;
|
|
|
|
/**
|
|
* prevents the view manager from refreshing. allows UpdateView()
|
|
* to notify widgets of damaged regions that should be repainted
|
|
* when the batch is ended.
|
|
* @return error status
|
|
*/
|
|
NS_IMETHOD BeginUpdateViewBatch(void) = 0;
|
|
|
|
/**
|
|
* allow the view manager to refresh any damaged areas accumulated
|
|
* after the BeginUpdateViewBatch() call. this may cause a
|
|
* synchronous paint to occur inside the call if aUpdateFlags NS_VMREFRESH_IMMEDIATE is set
|
|
* @param aUpdateFlags see bottom of nsIViewManager.h for description
|
|
* @return error status
|
|
*/
|
|
NS_IMETHOD EndUpdateViewBatch(PRUint32 aUpdateFlags) = 0;
|
|
|
|
/**
|
|
* set the view that is is considered to be the root scrollable
|
|
* view for the document.
|
|
* @param aScrollable root scrollable view
|
|
* @return error status
|
|
*/
|
|
NS_IMETHOD SetRootScrollableView(nsIScrollableView *aScrollable) = 0;
|
|
|
|
/**
|
|
* get the view that is is considered to be the root scrollable
|
|
* view for the document.
|
|
* @param aScrollable out parameter for root scrollable view
|
|
* @return error status
|
|
*/
|
|
NS_IMETHOD GetRootScrollableView(nsIScrollableView **aScrollable) = 0;
|
|
|
|
/**
|
|
* Display the specified view. Used when printing.
|
|
*/
|
|
NS_IMETHOD Display(nsIView *aView) = 0;
|
|
|
|
/**
|
|
* Add a listener to the view manager's composite listener list.
|
|
* @param aListener - new listener
|
|
* @result error status
|
|
*/
|
|
NS_IMETHOD AddCompositeListener(nsICompositeListener *aListener) = 0;
|
|
|
|
/**
|
|
* Remove a listener from the view manager's composite listener list.
|
|
* @param aListener - listener to remove
|
|
* @result error status
|
|
*/
|
|
NS_IMETHOD RemoveCompositeListener(nsICompositeListener *aListener) = 0;
|
|
|
|
/**
|
|
* Retrieve the widget that a view renders into.
|
|
* @param aView the view to get the widget for
|
|
* @param aWidget the widget that aView renders into.
|
|
* @result error status
|
|
*/
|
|
|
|
NS_IMETHOD GetWidgetForView(nsIView *aView, nsIWidget **aWidget) = 0;
|
|
|
|
/**
|
|
* Retrieve the widget that a view manager renders into
|
|
* @param aWidget the widget that aView renders into.
|
|
* @result error status
|
|
*/
|
|
|
|
NS_IMETHOD GetWidget(nsIWidget **aWidget) = 0;
|
|
|
|
/**
|
|
* Force update of view manager widget
|
|
* Callers should use UpdateView(view, NS_VMREFRESH_IMMEDIATE) in most cases instead
|
|
* @result error status
|
|
*/
|
|
|
|
NS_IMETHOD ForceUpdate() = 0;
|
|
|
|
|
|
};
|
|
|
|
//when the refresh happens, should it be double buffered?
|
|
#define NS_VMREFRESH_DOUBLE_BUFFER 0x0001
|
|
//update view now?
|
|
#define NS_VMREFRESH_IMMEDIATE 0x0002
|
|
//prevent "sync painting"
|
|
#define NS_VMREFRESH_NO_SYNC 0x0004
|
|
//if the total damage area is greater than 25% of the
|
|
//area of the root view, use double buffering
|
|
#define NS_VMREFRESH_AUTO_DOUBLE_BUFFER 0x0008
|
|
|
|
#endif // nsIViewManager_h___
|