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2 : /* ***** BEGIN LICENSE BLOCK *****
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20 : * the Initial Developer. All Rights Reserved.
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22 : * Contributor(s):
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37 :
38 : #ifndef nsView_h___
39 : #define nsView_h___
40 :
41 : #include "nsIView.h"
42 : #include "nsRegion.h"
43 : #include "nsRect.h"
44 : #include "nsCRT.h"
45 : #include "nsIFactory.h"
46 : #include "nsEvent.h"
47 : #include <stdio.h>
48 :
49 : //mmptemp
50 :
51 : class nsIViewManager;
52 : class nsViewManager;
53 :
54 : class nsView : public nsIView
55 : {
56 : public:
57 : nsView(nsViewManager* aViewManager = nsnull,
58 : nsViewVisibility aVisibility = nsViewVisibility_kShow);
59 :
60 0 : NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
61 :
62 : NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
63 :
64 : /**
65 : * Called to indicate that the position of the view has been changed.
66 : * The specified coordinates are in the parent view's coordinate space.
67 : * @param x new x position
68 : * @param y new y position
69 : */
70 : virtual void SetPosition(nscoord aX, nscoord aY);
71 : /**
72 : * Called to indicate that the dimensions of the view have been changed.
73 : * The x and y coordinates may be < 0, indicating that the view extends above
74 : * or to the left of its origin position. The term 'dimensions' indicates it
75 : * is relative to this view.
76 : */
77 : virtual void SetDimensions(const nsRect &aRect, bool aPaint = true,
78 : bool aResizeWidget = true);
79 : void SetInvalidationDimensions(const nsRect* aRect);
80 :
81 : /**
82 : * Called to indicate that the visibility of a view has been
83 : * changed.
84 : * @param visibility new visibility state
85 : */
86 : NS_IMETHOD SetVisibility(nsViewVisibility visibility);
87 :
88 : /**
89 : * Called to indicate that the z-index of a view has been changed.
90 : * The z-index is relative to all siblings of the view.
91 : * @param aAuto Indicate that the z-index of a view is "auto". An "auto" z-index
92 : * means that the view does not define a new stacking context,
93 : * which means that the z-indicies of the view's children are
94 : * relative to the view's siblings.
95 : * @param zindex new z depth
96 : */
97 : void SetZIndex(bool aAuto, PRInt32 aZIndex, bool aTopMost);
98 :
99 : /**
100 : * Set/Get whether the view "floats" above all other views,
101 : * which tells the compositor not to consider higher views in
102 : * the view hierarchy that would geometrically intersect with
103 : * this view. This is a hack, but it fixes some problems with
104 : * views that need to be drawn in front of all other views.
105 : * @result true if the view floats, false otherwise.
106 : */
107 : NS_IMETHOD SetFloating(bool aFloatingView);
108 :
109 : // Helper function to get the view that's associated with a widget
110 0 : static nsView* GetViewFor(nsIWidget* aWidget) {
111 0 : return static_cast<nsView*>(nsIView::GetViewFor(aWidget));
112 : }
113 :
114 : // Helper function to get mouse grabbing off this view (by moving it to the
115 : // parent, if we can)
116 : void DropMouseGrabbing();
117 :
118 : public:
119 : // See nsIView::CreateWidget.
120 : nsresult CreateWidget(nsWidgetInitData *aWidgetInitData,
121 : bool aEnableDragDrop,
122 : bool aResetVisibility);
123 :
124 : // See nsIView::CreateWidgetForParent.
125 : nsresult CreateWidgetForParent(nsIWidget* aParentWidget,
126 : nsWidgetInitData *aWidgetInitData,
127 : bool aEnableDragDrop,
128 : bool aResetVisibility);
129 :
130 : // See nsIView::CreateWidgetForPopup.
131 : nsresult CreateWidgetForPopup(nsWidgetInitData *aWidgetInitData,
132 : nsIWidget* aParentWidget,
133 : bool aEnableDragDrop,
134 : bool aResetVisibility);
135 :
136 : // See nsIView::DestroyWidget
137 : void DestroyWidget();
138 :
139 : // NOT in nsIView, so only available in view module
140 : // These are also present in nsIView, but these versions return nsView and nsViewManager
141 : // instead of nsIView and nsIViewManager.
142 0 : nsView* GetFirstChild() const { return mFirstChild; }
143 0 : nsView* GetNextSibling() const { return mNextSibling; }
144 0 : nsView* GetParent() const { return mParent; }
145 0 : nsViewManager* GetViewManager() const { return mViewManager; }
146 : // These are superseded by a better interface in nsIView
147 0 : PRInt32 GetZIndex() const { return mZIndex; }
148 0 : bool GetZIndexIsAuto() const { return (mVFlags & NS_VIEW_FLAG_AUTO_ZINDEX) != 0; }
149 : // Same as GetBounds but converts to parent appunits if they are different.
150 : nsRect GetBoundsInParentUnits() const;
151 :
152 0 : nsRect GetInvalidationDimensions() const {
153 0 : return mHaveInvalidationDimensions ? mInvalidationDimensions : GetDimensions();
154 : }
155 :
156 : // These are defined exactly the same in nsIView, but for now they have to be redeclared
157 : // here because of stupid C++ method hiding rules
158 :
159 0 : bool HasNonEmptyDirtyRegion() {
160 0 : return mDirtyRegion && !mDirtyRegion->IsEmpty();
161 : }
162 0 : nsRegion* GetDirtyRegion() {
163 0 : if (!mDirtyRegion) {
164 0 : NS_ASSERTION(!mParent || GetFloating(),
165 : "Only display roots should have dirty regions");
166 0 : mDirtyRegion = new nsRegion();
167 0 : NS_ASSERTION(mDirtyRegion, "Out of memory!");
168 : }
169 0 : return mDirtyRegion;
170 : }
171 :
172 : void InsertChild(nsView *aChild, nsView *aSibling);
173 : void RemoveChild(nsView *aChild);
174 :
175 0 : void SetParent(nsView *aParent) { mParent = aParent; }
176 0 : void SetNextSibling(nsView *aSibling) { mNextSibling = aSibling; }
177 :
178 : PRUint32 GetViewFlags() const { return mVFlags; }
179 : void SetViewFlags(PRUint32 aFlags) { mVFlags = aFlags; }
180 :
181 0 : void SetTopMost(bool aTopMost) { aTopMost ? mVFlags |= NS_VIEW_FLAG_TOPMOST : mVFlags &= ~NS_VIEW_FLAG_TOPMOST; }
182 0 : bool IsTopMost() { return((mVFlags & NS_VIEW_FLAG_TOPMOST) != 0); }
183 :
184 : void ResetWidgetBounds(bool aRecurse, bool aForceSync);
185 : void AssertNoWindow();
186 :
187 : void NotifyEffectiveVisibilityChanged(bool aEffectivelyVisible);
188 :
189 : // Update the cached RootViewManager for all view manager descendents,
190 : // If the hierarchy is being removed, aViewManagerParent points to the view
191 : // manager for the hierarchy's old parent, and will have its mouse grab
192 : // released if it points to any view in this view hierarchy.
193 : void InvalidateHierarchy(nsViewManager *aViewManagerParent);
194 :
195 : virtual ~nsView();
196 :
197 : nsPoint GetOffsetTo(const nsView* aOther) const;
198 : nsIWidget* GetNearestWidget(nsPoint* aOffset) const;
199 : nsPoint GetOffsetTo(const nsView* aOther, const PRInt32 aAPD) const;
200 : nsIWidget* GetNearestWidget(nsPoint* aOffset, const PRInt32 aAPD) const;
201 :
202 : protected:
203 : // Do the actual work of ResetWidgetBounds, unconditionally. Don't
204 : // call this method if we have no widget.
205 : void DoResetWidgetBounds(bool aMoveOnly, bool aInvalidateChangedSize);
206 :
207 : nsRegion* mDirtyRegion;
208 : // invalidations are clipped to mInvalidationDimensions, not
209 : // GetDimensions(), when mHaveInvalidationDimensions is true. This
210 : // is used to support persistent "displayport" rendering; see
211 : // nsPresShell.cpp. The coordinates of mInvalidationDimensions are
212 : // relative to |this|.
213 : nsRect mInvalidationDimensions;
214 : bool mHaveInvalidationDimensions;
215 :
216 : private:
217 : void InitializeWindow(bool aEnableDragDrop, bool aResetVisibility);
218 : };
219 :
220 : #endif
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