зеркало из https://github.com/mozilla/gecko-dev.git
312 строки
11 KiB
C++
312 строки
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef nsIViewManager_h___
|
|
#define nsIViewManager_h___
|
|
|
|
#include "nscore.h"
|
|
#include "nsIView.h"
|
|
#include "nsEvent.h"
|
|
|
|
class nsIWidget;
|
|
struct nsRect;
|
|
class nsRegion;
|
|
class nsDeviceContext;
|
|
class nsIPresShell;
|
|
|
|
#define NS_IVIEWMANAGER_IID \
|
|
{ 0x540610a6, 0x4fdd, 0x4ae3, \
|
|
{ 0x9b, 0xdb, 0xa6, 0x4d, 0x8b, 0xca, 0x02, 0x0f } }
|
|
|
|
class nsIViewManager : public nsISupports
|
|
{
|
|
public:
|
|
|
|
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IVIEWMANAGER_IID)
|
|
/**
|
|
* Initialize the ViewManager
|
|
* Note: this instance does not hold a reference to the presshell
|
|
* because it holds a reference to this instance.
|
|
* @result The result of the initialization, NS_OK if no errors
|
|
*/
|
|
NS_IMETHOD Init(nsDeviceContext* aContext) = 0;
|
|
|
|
/**
|
|
* Create an ordinary view
|
|
* @param aBounds initial bounds for view
|
|
* XXX We should eliminate this parameter; you can set the bounds after CreateView
|
|
* @param aParent intended parent for view. this is not actually set in the
|
|
* nsIView through this method. it is only used by the initialization
|
|
* code to walk up the view tree, if necessary, to find resources.
|
|
* XXX We should eliminate this parameter!
|
|
* @param aVisibilityFlag initial visibility state of view
|
|
* XXX We should eliminate this parameter; you can set it after CreateView
|
|
* @result The new view
|
|
*/
|
|
NS_IMETHOD_(nsIView*) CreateView(const nsRect& aBounds,
|
|
const nsIView* aParent,
|
|
nsViewVisibility aVisibilityFlag = nsViewVisibility_kShow) = 0;
|
|
|
|
/**
|
|
* Get the root of the view tree.
|
|
* @result the root view
|
|
*/
|
|
NS_IMETHOD_(nsIView*) GetRootView() = 0;
|
|
|
|
/**
|
|
* Set the root of the view tree. Does not destroy the current root view.
|
|
* aView may have a parent view managed by a different view manager.
|
|
* aView may have a widget (anything but printing) or may not (printing).
|
|
* @param aView view to set as root
|
|
*/
|
|
NS_IMETHOD SetRootView(nsIView *aView) = 0;
|
|
|
|
/**
|
|
* Get the dimensions of the root window. The dimensions are in
|
|
* twips
|
|
* @param aWidth out parameter for width of window in twips
|
|
* @param aHeight out parameter for height of window in twips
|
|
*/
|
|
NS_IMETHOD GetWindowDimensions(nscoord *aWidth, nscoord *aHeight) = 0;
|
|
|
|
/**
|
|
* Set the dimensions of the root window.
|
|
* Called if the root window is resized. The dimensions are in
|
|
* twips
|
|
* @param aWidth of window in twips
|
|
* @param aHeight of window in twips
|
|
*/
|
|
NS_IMETHOD SetWindowDimensions(nscoord aWidth, nscoord aHeight) = 0;
|
|
|
|
/**
|
|
* Do any resizes that are pending.
|
|
*/
|
|
NS_IMETHOD FlushDelayedResize(bool aDoReflow) = 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
|
|
*/
|
|
NS_IMETHOD InvalidateView(nsIView *aView) = 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. Does not check for paint suppression.
|
|
* @param aView view to paint. should be root view
|
|
* @param rect rect to mark as damaged
|
|
*/
|
|
NS_IMETHOD InvalidateViewNoSuppression(nsIView *aView, const nsRect &aRect) = 0;
|
|
|
|
/**
|
|
* Called to inform the view manager that it should invalidate all views.
|
|
*/
|
|
NS_IMETHOD InvalidateAllViews() = 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 aEvent event to dispatch
|
|
* @param aViewTarget dispatch the event to this view
|
|
* @param aStatus event handling status
|
|
*/
|
|
NS_IMETHOD DispatchEvent(nsGUIEvent *aEvent,
|
|
nsIView* aViewTarget, nsEventStatus* aStatus) = 0;
|
|
|
|
/**
|
|
* Given a parent view, insert another view as its child.
|
|
* aSibling and aAbove control the "document order" for the insertion.
|
|
* If aSibling is null, the view is inserted at the end of the document order
|
|
* if aAfter is true, otherwise it is inserted at the beginning.
|
|
* If aSibling is non-null, then if aAfter is true, the view is inserted
|
|
* after the sibling in document order (appearing above the sibling unless
|
|
* overriden by z-order).
|
|
* If it is false, the view is inserted before the sibling.
|
|
* The view manager generates the appopriate dirty regions.
|
|
* @param aParent parent view
|
|
* @param aChild child view
|
|
* @param aSibling sibling view
|
|
* @param aAfter after or before in the document order
|
|
*/
|
|
NS_IMETHOD InsertChild(nsIView *aParent, nsIView *aChild, nsIView *aSibling,
|
|
bool aAfter) = 0;
|
|
|
|
/**
|
|
* Remove a specific child view from its parent. This will NOT remove its placeholder
|
|
* if there is one.
|
|
* The view manager generates the appropriate dirty regions.
|
|
* @param aParent parent view
|
|
* @param aChild child view
|
|
*/
|
|
NS_IMETHOD RemoveChild(nsIView *aChild) = 0;
|
|
|
|
/**
|
|
* Move a view to the specified position, provided in parent coordinates.
|
|
* The new position is the (0, 0) origin for the view's coordinate system.
|
|
* The view's bounds may extend above or to the left of this point.
|
|
* The view manager generates the appropriate dirty regions.
|
|
* @param aView view to move
|
|
* @param aX x value for new view position
|
|
* @param aY y value for new view position
|
|
*/
|
|
NS_IMETHOD MoveViewTo(nsIView *aView, nscoord aX, nscoord aY) = 0;
|
|
|
|
/**
|
|
* Resize a view. In addition to setting the width and height, you can
|
|
* set the x and y of its bounds relative to its position. Negative x and y
|
|
* will let the view extend above and to the left of the (0,0) point in its
|
|
* coordinate system.
|
|
* The view manager generates the appropriate dirty regions.
|
|
* @param aView view to move
|
|
* @param the new bounds relative to the current position
|
|
* @param RepaintExposedAreaOnly
|
|
* if true Repaint only the expanded or contracted region,
|
|
* if false Repaint the union of the old and new rectangles.
|
|
*/
|
|
NS_IMETHOD ResizeView(nsIView *aView, const nsRect &aRect,
|
|
bool aRepaintExposedAreaOnly = false) = 0;
|
|
|
|
/**
|
|
* Set the visibility of a view. Hidden views have the effect of hiding
|
|
* their descendants as well. This does not affect painting, so layout
|
|
* is responsible for ensuring that content in hidden views is not
|
|
* painted nor handling events. It does affect the visibility of widgets;
|
|
* if a view is hidden, descendant views with widgets have their widgets
|
|
* hidden.
|
|
* The view manager generates the appropriate 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 appropriate dirty regions.
|
|
* @param aAutoZIndex 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.
|
|
* @param aView view to change z depth of
|
|
* @param aZindex explicit z depth
|
|
* @param aTopMost used when this view is z-index:auto to compare against
|
|
* other z-index:auto views.
|
|
* true if the view should be topmost when compared with
|
|
* other z-index:auto views.
|
|
*/
|
|
NS_IMETHOD SetViewZIndex(nsIView *aView, bool aAutoZIndex, int32_t aZindex, bool aTopMost = false) = 0;
|
|
|
|
/**
|
|
* Set whether the view "floats" above all other views,
|
|
* which tells the compositor not to consider higher views in
|
|
* the view hierarchy that would geometrically intersect with
|
|
* this view. This is a hack, but it fixes some problems with
|
|
* views that need to be drawn in front of all other views.
|
|
*/
|
|
NS_IMETHOD SetViewFloating(nsIView *aView, bool aFloatingView) = 0;
|
|
|
|
/**
|
|
* Set the presshell associated with this manager
|
|
* @param aPresShell - new presshell
|
|
*/
|
|
virtual void SetPresShell(nsIPresShell *aPresShell) = 0;
|
|
|
|
/**
|
|
* Get the pres shell associated with this manager
|
|
*/
|
|
virtual nsIPresShell* GetPresShell() = 0;
|
|
|
|
/**
|
|
* Get the device context associated with this manager
|
|
* @result device context
|
|
*/
|
|
NS_IMETHOD GetDeviceContext(nsDeviceContext *&aContext) = 0;
|
|
|
|
/**
|
|
* A stack class for disallowing changes that would enter painting. For
|
|
* example, popup widgets shouldn't be resized during reflow, since doing so
|
|
* might cause synchronous painting inside reflow which is forbidden.
|
|
* While refresh is disabled, widget geometry changes are deferred and will
|
|
* be handled later, either from the refresh driver or from an NS_WILL_PAINT
|
|
* event.
|
|
* We don't want to defer widget geometry changes all the time. Resizing a
|
|
* popup from script doesn't need to be deferred, for example, especially
|
|
* since popup widget geometry is observable from script and expected to
|
|
* update synchronously.
|
|
*/
|
|
class NS_STACK_CLASS AutoDisableRefresh {
|
|
public:
|
|
AutoDisableRefresh(nsIViewManager* aVM) {
|
|
if (aVM) {
|
|
mRootVM = aVM->IncrementDisableRefreshCount();
|
|
}
|
|
}
|
|
~AutoDisableRefresh() {
|
|
if (mRootVM) {
|
|
mRootVM->DecrementDisableRefreshCount();
|
|
}
|
|
}
|
|
private:
|
|
AutoDisableRefresh(const AutoDisableRefresh& aOther);
|
|
const AutoDisableRefresh& operator=(const AutoDisableRefresh& aOther);
|
|
|
|
nsCOMPtr<nsIViewManager> mRootVM;
|
|
};
|
|
|
|
private:
|
|
friend class AutoDisableRefresh;
|
|
|
|
virtual nsIViewManager* IncrementDisableRefreshCount() = 0;
|
|
virtual void DecrementDisableRefreshCount() = 0;
|
|
|
|
public:
|
|
/**
|
|
* Retrieve the widget at the root of the nearest enclosing
|
|
* view manager whose root view has a widget.
|
|
*/
|
|
NS_IMETHOD GetRootWidget(nsIWidget **aWidget) = 0;
|
|
|
|
/**
|
|
* Indicate whether the viewmanager is currently painting
|
|
*
|
|
* @param aPainting true if the viewmanager is painting
|
|
* false otherwise
|
|
*/
|
|
NS_IMETHOD IsPainting(bool& aIsPainting)=0;
|
|
|
|
/**
|
|
* Retrieve the time of the last user event. User events
|
|
* include mouse and keyboard events. The viewmanager
|
|
* saves the time of the last user event.
|
|
*
|
|
* @param aTime Last user event time in microseconds
|
|
*/
|
|
NS_IMETHOD GetLastUserEventTime(uint32_t& aTime)=0;
|
|
|
|
/**
|
|
* Find the nearest display root view for the view aView. This is the view for
|
|
* the nearest enclosing popup or the root view for the root document.
|
|
*/
|
|
static nsIView* GetDisplayRootFor(nsIView* aView);
|
|
|
|
/**
|
|
* Flush the accumulated dirty region to the widget and update widget
|
|
* geometry.
|
|
*/
|
|
virtual void ProcessPendingUpdates()=0;
|
|
|
|
/**
|
|
* Just update widget geometry without flushing the dirty region
|
|
*/
|
|
virtual void UpdateWidgetGeometry() = 0;
|
|
};
|
|
|
|
NS_DEFINE_STATIC_IID_ACCESSOR(nsIViewManager, NS_IVIEWMANAGER_IID)
|
|
|
|
#endif // nsIViewManager_h___
|