зеркало из https://github.com/mozilla/gecko-dev.git
498 строки
19 KiB
C++
498 строки
19 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef nsFormControlFrame_h___
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#define nsFormControlFrame_h___
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#include "nsIFormControlFrame.h"
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#include "nsIFormManager.h"
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#include "nsISupports.h"
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#include "nsIWidget.h"
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#include "nsLeafFrame.h"
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#include "nsCoord.h"
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#include "nsIStyleContext.h"
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class nsIView;
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class nsIPresContext;
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class nsStyleCoord;
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class nsFormFrame;
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#define CSS_NOTSET -1
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#define ATTR_NOTSET -1
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/**
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* Enumeration of possible mouse states used to detect mouse clicks
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*/
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enum nsMouseState {
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eMouseNone,
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eMouseEnter,
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eMouseExit,
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eMouseDown,
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eMouseUp
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};
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struct nsInputDimensionSpec
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{
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nsIAtom* mColSizeAttr; // attribute used to determine width
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PRBool mColSizeAttrInPixels; // is attribute value in pixels (otherwise num chars)
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nsIAtom* mColValueAttr; // attribute used to get value to determine size
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// if not determined above
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nsString* mColDefaultValue; // default value if not determined above
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nscoord mColDefaultSize; // default width if not determined above
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PRBool mColDefaultSizeInPixels; // is default width in pixels (otherswise num chars)
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nsIAtom* mRowSizeAttr; // attribute used to determine height
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nscoord mRowDefaultSize; // default height if not determined above
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nsInputDimensionSpec(nsIAtom* aColSizeAttr, PRBool aColSizeAttrInPixels,
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nsIAtom* aColValueAttr, nsString* aColDefaultValue,
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nscoord aColDefaultSize, PRBool aColDefaultSizeInPixels,
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nsIAtom* aRowSizeAttr, nscoord aRowDefaultSize)
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: mColSizeAttr(aColSizeAttr), mColSizeAttrInPixels(aColSizeAttrInPixels),
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mColValueAttr(aColValueAttr),
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mColDefaultValue(aColDefaultValue), mColDefaultSize(aColDefaultSize),
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mColDefaultSizeInPixels(aColDefaultSizeInPixels),
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mRowSizeAttr(aRowSizeAttr), mRowDefaultSize(aRowDefaultSize)
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{
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}
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};
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/**
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* nsFormControlFrame is the base class for frames of form controls. It
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* provides a uniform way of creating widgets, resizing, and painting.
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* @see nsLeafFrame and its base classes for more info
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*/
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class nsFormControlFrame : public nsLeafFrame,
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public nsIFormControlFrame
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{
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public:
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/**
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* Main constructor
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* @param aContent the content representing this frame
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* @param aParentFrame the parent frame
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*/
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nsFormControlFrame();
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NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
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static nscoord CalculateSize (nsIPresContext* aPresContext, nsFormControlFrame* aFrame,
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const nsSize& aCSSSize, nsInputDimensionSpec& aDimensionSpec,
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nsSize& aBounds, PRBool& aWidthExplicit,
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PRBool& aHeightExplicit, nscoord& aRowSize,
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nsIRenderingContext *aRendContext);
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/**
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* Respond to a gui event
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* @see nsIFrame::HandleEvent
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*/
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NS_IMETHOD HandleEvent(nsIPresContext& aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus& aEventStatus);
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/**
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* Draw this frame within the context of a presentation context and rendering context
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* @see nsIFrame::Paint
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*/
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NS_IMETHOD Paint(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer);
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NS_IMETHOD SetInitialChildList(nsIPresContext& aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList);
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NS_IMETHOD DidReflow(nsIPresContext& aPresContext,
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nsDidReflowStatus aStatus);
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/**
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* Respond to the request to resize and/or reflow
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* @see nsIFrame::Reflow
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*/
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NS_IMETHOD Reflow(nsIPresContext& aCX,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD AttributeChanged(nsIPresContext* aPresContext,
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nsIContent* aChild,
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nsIAtom* aAttribute,
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PRInt32 aHint);
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// new behavior
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/**
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* Get the class id of the widget associated with this frame
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* @return the class id
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*/
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virtual const nsIID& GetCID();
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/**
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* Get the interface id of widget associated with this frame
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* @return the interface id
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*/
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virtual const nsIID& GetIID();
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NS_IMETHOD GetType(PRInt32* aType) const;
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NS_IMETHOD GetName(nsString* aName);
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NS_IMETHOD GetValue(nsString* aName);
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virtual PRInt32 GetMaxNumValues();
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virtual PRBool GetNamesValues(PRInt32 aMaxNumValues, PRInt32& aNumValues,
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nsString* aValues, nsString* aNames);
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/**
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* Get the widget associated with this frame
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* @param aView the view associated with the frame. It is a convience parm.
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* @param aWidget the address of address of where the widget will be placed.
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* This method doses an AddRef on the widget.
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*/
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nsresult GetWidget(nsIView* aView, nsIWidget** aWidget);
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nsresult GetWidget(nsIWidget** aWidget);
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/**
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* Respond to a enter key being pressed
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*/
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virtual void EnterPressed(nsIPresContext& aPresContext) {}
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/**
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* Respond to a mouse click (e.g. mouse enter, mouse down, mouse up)
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*/
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virtual void MouseClicked(nsIPresContext* aPresContext) {}
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/**
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* Perform opertations after the widget associated with this frame has been
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* created.
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*/
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virtual void PostCreateWidget(nsIPresContext* aPresContext,
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nscoord& aWidth, nscoord& aHeight);
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virtual void SetFocus(PRBool aOn = PR_TRUE, PRBool aRepaint = PR_FALSE);
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void SetColors(nsIPresContext& aPresContext);
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virtual void Reset();
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virtual PRBool IsSuccessful(nsIFormControlFrame* aSubmitter);
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/**
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* Perform opertations before the widget associated with this frame has been
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* created.
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*/
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virtual nsWidgetInitData* GetWidgetInitData(nsIPresContext& aPresContext);
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static nscoord GetTextSize(nsIPresContext& aContext, nsFormControlFrame* aFrame,
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const nsString& aString, nsSize& aSize,
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nsIRenderingContext *aRendContext);
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static nscoord GetTextSize(nsIPresContext& aContext, nsFormControlFrame* aFrame,
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PRInt32 aNumChars, nsSize& aSize,
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nsIRenderingContext *aRendContext);
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void GetWidgetSize(nsSize& aSize) const { aSize.width = mWidgetSize.width;
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aSize.height = mWidgetSize.height; }
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// XXX similar functionality needs to be added to widget library and these
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// need to change to use it.
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static nscoord GetScrollbarWidth(float aPixToTwip);
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virtual nscoord GetVerticalBorderWidth(float aPixToTwip) const;
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virtual nscoord GetHorizontalBorderWidth(float aPixToTwip) const;
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virtual nscoord GetVerticalInsidePadding(float aPixToTwip,
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nscoord aInnerHeight) const;
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virtual nscoord GetHorizontalInsidePadding(nsIPresContext& aPresContext,
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float aPixToTwip,
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nscoord aInnerWidth,
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nscoord aCharWidth) const;
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NS_IMETHOD GetSize(PRInt32* aSize) const;
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NS_IMETHOD GetMaxLength(PRInt32* aSize);
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virtual void SetClickPoint(nscoord aX, nscoord aY);
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nsFormFrame* GetFormFrame() { return mFormFrame; }
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virtual void SetFormFrame(nsFormFrame* aFormFrame) { mFormFrame = aFormFrame; }
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protected:
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virtual ~nsFormControlFrame();
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/**
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* Get the size that this frame would occupy without any constraints
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* @param aPresContext the presentation context
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* @param aDesiredSize the size desired by this frame, to be set by this method
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* @param aMaxSize the maximum size available for this frame
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*/
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virtual void GetDesiredSize(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsHTMLReflowMetrics& aDesiredSize);
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virtual void GetDesiredSize(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsHTMLReflowMetrics& aDesiredLayoutSize,
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nsSize& aDesiredWidgetSize);
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NS_IMETHOD GetFont(nsIPresContext* aPresContext, nsFont& aFont);
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/**
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* Get the width and height of this control based on CSS
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* @param aPresContext the presentation context
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* @param aSize the size that this frame wants, set by this method. values of -1
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* for aSize.width or aSize.height indicate unset values.
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*/
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void GetStyleSize(nsIPresContext& aContext,
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const nsHTMLReflowState& aReflowState,
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nsSize& aSize);
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//
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//-------------------------------------------------------------------------------------
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// Utility methods for managing checkboxes and radiobuttons
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//-------------------------------------------------------------------------------------
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//
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/**
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* Get the state of the checked attribute.
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* @param aState set to PR_TRUE if the checked attribute is set,
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* PR_FALSE if the checked attribute has been removed
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* @returns NS_OK or NS_CONTENT_ATTR_HAS_VALUE
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*/
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nsresult GetCurrentCheckState(PRBool* aState);
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/**
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* Set the state of the checked attribute.
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* @param aState set to PR_TRUE to set the attribute,
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* PR_FALSE to unset the attribute
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* @returns NS_OK or NS_CONTENT_ATTR_HAS_VALUE
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*/
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nsresult SetCurrentCheckState(PRBool aState);
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/**
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* Get the state of the defaultchecked attribute.
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* @param aState set to PR_TRUE if the defaultchecked attribute is set,
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* PR_FALSE if the defaultchecked attribute has been removed
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* @returns NS_OK or NS_CONTENT_ATTR_HAS_VALUE
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*/
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nsresult GetDefaultCheckState(PRBool* aState);
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//nscoord GetStyleDim(nsIPresContext& aPresContext, nscoord aMaxDim,
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// nscoord aMaxWidth, const nsStyleCoord& aCoord);
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//
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//-------------------------------------------------------------------------------------
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// Utility methods for rendering Form Elements using GFX
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//-------------------------------------------------------------------------------------
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//
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// XXX: The following location for the paint code is TEMPORARY.
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// It is being used to get printing working
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// under windows. Later it will be used to GFX-render the controls to the display.
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// Expect this code to repackaged and moved to a new location in the future.
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/**
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* Enumeration of possible mouse states used to detect mouse clicks
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*/
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enum nsArrowDirection {
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eArrowDirection_Left,
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eArrowDirection_Right,
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eArrowDirection_Up,
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eArrowDirection_Down
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};
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/**
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* Scale, translate and convert an arrow of poitns from nscoord's to nsPoints's.
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*
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* @param aNumberOfPoints number of (x,y) pairs
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* @param aPoints arrow of points to convert
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* @param aScaleFactor scale factor to apply to each points translation.
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* @param aX x coordinate to add to each point after scaling
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* @param aY y coordinate to add to each point after scaling
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* @param aCenterX x coordinate of the center point in the original array of points.
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* @param aCenterY y coordiante of the center point in the original array of points.
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*/
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static void SetupPoints(PRUint32 aNumberOfPoints, nscoord* aPoints,
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nsPoint* aPolygon, nscoord aScaleFactor, nscoord aX, nscoord aY,
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nscoord aCenterX, nscoord aCenterY);
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/**
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* Paint a fat line. The line is drawn as a polygon with a specified width.
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*
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* @param aRenderingContext the rendering context
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* @param aSX starting x in pixels
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* @param aSY starting y in pixels
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* @param aEX ending x in pixels
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* @param aEY ending y in pixels
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* @param aHorz PR_TRUE if aWidth is added to x coordinates to form polygon. If
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* PR_FALSE then aWidth as added to the y coordinates.
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* @param aOnePixel number of twips in a single pixel.
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*/
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static void PaintLine(nsIRenderingContext& aRenderingContext,
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nscoord aSX, nscoord aSY, nscoord aEX, nscoord aEY,
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PRBool aHorz, nscoord aWidth, nscoord aOnePixel);
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/**
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* Draw an arrow glyph.
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*
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* @param aRenderingContext the rendering context
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* @param aSX upper left x coordinate pixels
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* @param aSY upper left y coordinate pixels
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* @param aType @see nsArrowDirection enumeration
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* @param aOnePixel number of twips in a single pixel.
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*/
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static void PaintArrowGlyph(nsIRenderingContext& aRenderingContext,
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nscoord aSX, nscoord aSY, nsArrowDirection aArrowDirection,
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nscoord aOnePixel);
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/**
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* Draw an arrow
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*
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* @param aArrowDirection @see nsArrowDirection enumeration
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* @param aRenderingContext the rendering context
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* @param aPresContext the presentation context
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* @param aDirtyRect rectangle requiring update
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* @param aOnePixel number of TWIPS in a single pixel
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* @param aColor color of the arrow glph
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* @param aSpacing spacing for the arrow background
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* @param aForFrame frame which the arrow will be rendered into.
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* @param aFrameRect rectangle for the frame specified by aForFrame
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*/
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static void PaintArrow(nsArrowDirection aArrowDirection,
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nsIRenderingContext& aRenderingContext,
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nsIPresContext& aPresContext,
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const nsRect& aDirtyRect,
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nsRect& aRect,
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nscoord aOnePixel,
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const nsStyleColor& aColor,
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const nsStyleSpacing& aSpacing,
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nsIFrame* aForFrame,
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nsRect& aFrameRect);
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/**
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* Paint a scrollbar
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*
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* @param aRenderingContext the rendering context
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* @param aPresContext the presentation context
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* @param aDirtyRect rectangle requiring update
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* @param aRect width and height of the scrollbar
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* @param aHorizontal if TRUE scrollbar is drawn horizontally, vertical if FALSE
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* @param aOnePixel number TWIPS per pixel
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* @param aScrollbarStyleContext style context for the scrollbar
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* @param aScrollbarArrowStyleContext style context for the scrollbar arrow
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* @param aForFrame the frame that the scrollbar will be rendered in to
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* @param aFrameRect the rectangle for the frame passed as aForFrame
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*/
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static void PaintScrollbar(nsIRenderingContext& aRenderingContext,
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nsIPresContext& aPresContext,
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const nsRect& aDirtyRect,
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nsRect& aRect,
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PRBool aHorizontal,
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nscoord aOnePixel,
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nsIStyleContext* aScrollbarStyleContext,
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nsIStyleContext* aScrollbarArrowStyleContext,
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nsIFrame* aForFrame,
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nsRect& aFrameRect);
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/**
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* Paint a fixed size checkmark
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*
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* @param aRenderingContext the rendering context
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* @param aPixelsToTwips scale factor for convering pixels to twips.
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*/
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static void PaintFixedSizeCheckMark(nsIRenderingContext& aRenderingContext,
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float aPixelsToTwips);
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/**
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* Paint a fixed size checkmark border
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*
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* @param aRenderingContext the rendering context
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* @param aPixelsToTwips scale factor for convering pixels to twips.
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* @param aBackgroundColor color for background of checkbox
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*/
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static void PaintFixedSizeCheckMarkBorder(nsIRenderingContext& aRenderingContext,
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float aPixelsToTwips, const nsStyleColor& aBackgroundColor);
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/**
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* Paint a rectangular button. Includes background, string, and focus indicator
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*
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* @param aPresContext the presentation context
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* @param aRenderingContext the rendering context
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* @param aDirtyRect rectangle requiring update
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* @param aWidth width the checkmark border in TWIPS
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* @param aHeight height of the checkmark border in TWIPS
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* @param aShift if PR_TRUE offset button as if it were pressed
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* @param aShowFocus if PR_TRUE draw focus rectangle over button
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* @param aStyleContext style context used for drawing button background
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* @param aLabel label for button
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* @param aForFrame the frame that the scrollbar will be rendered in to
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*/
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static void PaintRectangularButton(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect, PRUint32 aWidth,
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PRUint32 aHeight, PRBool aShift, PRBool aShowFocus,
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nsIStyleContext* aStyleContext, nsString& aLabel,
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nsFormControlFrame* aForFrame);
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/**
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* Paint a focus indicator.
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*
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* @param aRenderingContext the rendering context
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* @param aDirtyRect rectangle requiring update
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* @param aInside border inside
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* @param aOutside border outside
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*/
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static void PaintFocus(nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect, nsRect& aInside, nsRect& aOutside);
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/**
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* Paint a circular border
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*
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* @param aPresContext the presentation context
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* @param aRenderingContext the rendering context
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* @param aDirtyRect rectangle requiring update
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* @param aStyleContext style context specifying colors and spacing
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* @param aInset if PR_TRUE draw inset, otherwise draw outset
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* @param aForFrame the frame that the scrollbar will be rendered in to
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* @param aWidth width of the border in TWIPS
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* @param aHeight height ofthe border in TWIPS
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*/
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static void PaintCircularBorder(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect, nsIStyleContext* aStyleContext, PRBool aInset,
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nsIFrame* aForFrame, PRUint32 aWidth, PRUint32 aHeight);
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nsMouseState mLastMouseState;
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nsIWidget* mWidget;
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nsSize mWidgetSize;
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PRBool mDidInit;
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nsPoint mLastClickPoint;
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nsFormFrame* mFormFrame;
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private:
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NS_IMETHOD_(nsrefcnt) AddRef() { return NS_OK; }
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NS_IMETHOD_(nsrefcnt) Release() { return NS_OK; }
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};
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#endif
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