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6cc574b43f
the radio button or checkbox element is created. Checkboxes and Radio buttons maintain their current state using the checked attribute stored in the content model. They no longer use the nsIWidget to maintain their current setting. Checkboxes and Radio buttons now print correctly. (i.e checked/unchecked state matches the screen.)
498 lines
19 KiB
C++
498 lines
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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