mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-31 22:25:30 +00:00
424 lines
16 KiB
C++
424 lines
16 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
|
|
#ifndef nsFormControlHelper_h___
|
|
#define nsFormControlHelper_h___
|
|
|
|
#include "nsIFormControlFrame.h"
|
|
#include "nsIFormManager.h"
|
|
#include "nsISupports.h"
|
|
#include "nsIWidget.h"
|
|
#include "nsLeafFrame.h"
|
|
#include "nsCoord.h"
|
|
#include "nsIStyleContext.h"
|
|
#include "nsIPresContext.h"
|
|
|
|
class nsIView;
|
|
//class nsIPresContext;
|
|
class nsStyleCoord;
|
|
class nsFormFrame;
|
|
//class nsIStyleContext;
|
|
|
|
#define CSS_NOTSET -1
|
|
#define ATTR_NOTSET -1
|
|
|
|
#define NS_STRING_TRUE "1"
|
|
#define NS_STRING_FALSE "0"
|
|
|
|
/**
|
|
* Enumeration of possible mouse states used to detect mouse clicks
|
|
*/
|
|
enum nsMouseState {
|
|
eMouseNone,
|
|
eMouseEnter,
|
|
eMouseExit,
|
|
eMouseDown,
|
|
eMouseUp
|
|
};
|
|
|
|
struct nsInputDimensionSpec
|
|
{
|
|
nsIAtom* mColSizeAttr; // attribute used to determine width
|
|
PRBool mColSizeAttrInPixels; // is attribute value in pixels (otherwise num chars)
|
|
nsIAtom* mColValueAttr; // attribute used to get value to determine size
|
|
// if not determined above
|
|
nsString* mColDefaultValue; // default value if not determined above
|
|
nscoord mColDefaultSize; // default width if not determined above
|
|
PRBool mColDefaultSizeInPixels; // is default width in pixels (otherswise num chars)
|
|
nsIAtom* mRowSizeAttr; // attribute used to determine height
|
|
nscoord mRowDefaultSize; // default height if not determined above
|
|
|
|
nsInputDimensionSpec(nsIAtom* aColSizeAttr, PRBool aColSizeAttrInPixels,
|
|
nsIAtom* aColValueAttr, nsString* aColDefaultValue,
|
|
nscoord aColDefaultSize, PRBool aColDefaultSizeInPixels,
|
|
nsIAtom* aRowSizeAttr, nscoord aRowDefaultSize)
|
|
: mColSizeAttr(aColSizeAttr), mColSizeAttrInPixels(aColSizeAttrInPixels),
|
|
mColValueAttr(aColValueAttr),
|
|
mColDefaultValue(aColDefaultValue), mColDefaultSize(aColDefaultSize),
|
|
mColDefaultSizeInPixels(aColDefaultSizeInPixels),
|
|
mRowSizeAttr(aRowSizeAttr), mRowDefaultSize(aRowDefaultSize)
|
|
{
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
* nsFormControlHelper is the base class for frames of form controls. It
|
|
* provides a uniform way of creating widgets, resizing, and painting.
|
|
* @see nsLeafFrame and its base classes for more info
|
|
*/
|
|
class nsFormControlHelper
|
|
{
|
|
|
|
public:
|
|
|
|
|
|
static nscoord CalculateSize (nsIPresContext* aPresContext,
|
|
nsIRenderingContext* aRendContext,
|
|
nsIFormControlFrame* aFrame,
|
|
const nsSize& aCSSSize,
|
|
nsInputDimensionSpec& aDimensionSpec,
|
|
nsSize& aDesiredSize,
|
|
nsSize& aMinSize,
|
|
PRBool& aWidthExplicit,
|
|
PRBool& aHeightExplicit,
|
|
nscoord& aRowSize);
|
|
|
|
static nscoord GetTextSize(nsIPresContext& aContext, nsIFormControlFrame* aFrame,
|
|
const nsString& aString, nsSize& aSize,
|
|
nsIRenderingContext *aRendContext);
|
|
|
|
static nscoord GetTextSize(nsIPresContext& aContext, nsIFormControlFrame* aFrame,
|
|
PRInt32 aNumChars, nsSize& aSize,
|
|
nsIRenderingContext *aRendContext);
|
|
|
|
static void GetFont(nsIFormControlFrame * aFormFrame,
|
|
nsIPresContext* aPresContext,
|
|
nsIStyleContext * aStyleContext,
|
|
nsFont& aFont);
|
|
|
|
static void ForceDrawFrame(nsIFrame * aFrame);
|
|
|
|
static nsresult GetValue(nsIContent* aContent, nsString* aResult);
|
|
static nsresult GetName(nsIContent* aContent, nsString* aResult);
|
|
static nsresult GetInputElementValue(nsIContent* aContent, nsString* aText, PRBool aInitialValue);
|
|
|
|
/**
|
|
* Utility to convert a string to a PRBool
|
|
* @param aValue string to convert to a PRBool
|
|
* @returns PR_TRUE if aValue = "1", PR_FALSE otherwise
|
|
*/
|
|
|
|
static PRBool GetBool(const nsString& aValue);
|
|
|
|
/**
|
|
* Utility to convert a PRBool to a string
|
|
* @param aValue Boolean value to convert to string.
|
|
* @param aResult string to hold the boolean value. It is set to "1"
|
|
* if aValue equals PR_TRUE, "0" if aValue equals PR_FALSE.
|
|
|
|
*/
|
|
|
|
static void GetBoolString(const PRBool aValue, nsString& aResult);
|
|
|
|
// XXX similar functionality needs to be added to widget library and these
|
|
// need to change to use it.
|
|
static nscoord GetScrollbarWidth(float aPixToTwip);
|
|
|
|
static nsCompatibility GetRepChars(nsIPresContext& aPresContext, char& char1, char& char2);
|
|
|
|
//
|
|
//-------------------------------------------------------------------------------------
|
|
// Utility methods for managing checkboxes and radiobuttons
|
|
//-------------------------------------------------------------------------------------
|
|
//
|
|
/**
|
|
* Get the state of the checked attribute.
|
|
* @param aState set to PR_TRUE if the checked attribute is set,
|
|
* PR_FALSE if the checked attribute has been removed
|
|
* @returns NS_OK or NS_CONTENT_ATTR_HAS_VALUE
|
|
*/
|
|
|
|
nsresult GetCurrentCheckState(PRBool* aState);
|
|
|
|
/**
|
|
* Set the state of the checked attribute.
|
|
* @param aState set to PR_TRUE to set the attribute,
|
|
* PR_FALSE to unset the attribute
|
|
* @returns NS_OK or NS_CONTENT_ATTR_HAS_VALUE
|
|
*/
|
|
|
|
nsresult SetCurrentCheckState(PRBool aState);
|
|
|
|
/**
|
|
* Get the state of the defaultchecked attribute.
|
|
* @param aState set to PR_TRUE if the defaultchecked attribute is set,
|
|
* PR_FALSE if the defaultchecked attribute has been removed
|
|
* @returns NS_OK or NS_CONTENT_ATTR_HAS_VALUE
|
|
*/
|
|
|
|
nsresult GetDefaultCheckState(PRBool* aState);
|
|
|
|
|
|
//
|
|
//-------------------------------------------------------------------------------------
|
|
// Utility methods for rendering Form Elements using GFX
|
|
//-------------------------------------------------------------------------------------
|
|
//
|
|
// XXX: The following location for the paint code is TEMPORARY.
|
|
// It is being used to get printing working
|
|
// under windows. Later it will be used to GFX-render the controls to the display.
|
|
// Expect this code to repackaged and moved to a new location in the future.
|
|
|
|
/**
|
|
* Enumeration of possible mouse states used to detect mouse clicks
|
|
*/
|
|
enum nsArrowDirection {
|
|
eArrowDirection_Left,
|
|
eArrowDirection_Right,
|
|
eArrowDirection_Up,
|
|
eArrowDirection_Down
|
|
};
|
|
|
|
/**
|
|
* Scale, translate and convert an arrow of poitns from nscoord's to nsPoints's.
|
|
*
|
|
* @param aNumberOfPoints number of (x,y) pairs
|
|
* @param aPoints arrow of points to convert
|
|
* @param aScaleFactor scale factor to apply to each points translation.
|
|
* @param aX x coordinate to add to each point after scaling
|
|
* @param aY y coordinate to add to each point after scaling
|
|
* @param aCenterX x coordinate of the center point in the original array of points.
|
|
* @param aCenterY y coordiante of the center point in the original array of points.
|
|
*/
|
|
|
|
static void SetupPoints(PRUint32 aNumberOfPoints, nscoord* aPoints,
|
|
nsPoint* aPolygon, nscoord aScaleFactor, nscoord aX, nscoord aY,
|
|
nscoord aCenterX, nscoord aCenterY);
|
|
|
|
/**
|
|
* Paint a fat line. The line is drawn as a polygon with a specified width.
|
|
*
|
|
* @param aRenderingContext the rendering context
|
|
* @param aSX starting x in pixels
|
|
* @param aSY starting y in pixels
|
|
* @param aEX ending x in pixels
|
|
* @param aEY ending y in pixels
|
|
* @param aHorz PR_TRUE if aWidth is added to x coordinates to form polygon. If
|
|
* PR_FALSE then aWidth as added to the y coordinates.
|
|
* @param aOnePixel number of twips in a single pixel.
|
|
*/
|
|
|
|
static void PaintLine(nsIRenderingContext& aRenderingContext,
|
|
nscoord aSX, nscoord aSY, nscoord aEX, nscoord aEY,
|
|
PRBool aHorz, nscoord aWidth, nscoord aOnePixel);
|
|
|
|
/**
|
|
* Draw an arrow glyph.
|
|
*
|
|
* @param aRenderingContext the rendering context
|
|
* @param aSX upper left x coordinate pixels
|
|
* @param aSY upper left y coordinate pixels
|
|
* @param aType @see nsArrowDirection enumeration
|
|
* @param aOnePixel number of twips in a single pixel.
|
|
*/
|
|
|
|
static void PaintArrowGlyph(nsIRenderingContext& aRenderingContext,
|
|
nscoord aSX, nscoord aSY, nsArrowDirection aArrowDirection,
|
|
nscoord aOnePixel);
|
|
|
|
/**
|
|
* Draw an arrow
|
|
*
|
|
* @param aArrowDirection @see nsArrowDirection enumeration
|
|
* @param aRenderingContext the rendering context
|
|
* @param aPresContext the presentation context
|
|
* @param aDirtyRect rectangle requiring update
|
|
* @param aOnePixel number of TWIPS in a single pixel
|
|
* @param aColor color of the arrow glph
|
|
* @param aSpacing spacing for the arrow background
|
|
* @param aForFrame frame which the arrow will be rendered into.
|
|
* @param aFrameRect rectangle for the frame specified by aForFrame
|
|
*/
|
|
|
|
static void PaintArrow(nsArrowDirection aArrowDirection,
|
|
nsIRenderingContext& aRenderingContext,
|
|
nsIPresContext& aPresContext,
|
|
const nsRect& aDirtyRect,
|
|
nsRect& aRect,
|
|
nscoord aOnePixel,
|
|
nsIStyleContext* aArrowStyle,
|
|
const nsStyleSpacing& aSpacing,
|
|
nsIFrame* aForFrame,
|
|
nsRect& aFrameRect);
|
|
/**
|
|
* Paint a scrollbar
|
|
*
|
|
* @param aRenderingContext the rendering context
|
|
* @param aPresContext the presentation context
|
|
* @param aDirtyRect rectangle requiring update
|
|
* @param aRect width and height of the scrollbar
|
|
* @param aHorizontal if TRUE scrollbar is drawn horizontally, vertical if FALSE
|
|
* @param aOnePixel number TWIPS per pixel
|
|
* @param aScrollbarStyleContext style context for the scrollbar
|
|
* @param aScrollbarArrowStyleContext style context for the scrollbar arrow
|
|
* @param aForFrame the frame that the scrollbar will be rendered in to
|
|
* @param aFrameRect the rectangle for the frame passed as aForFrame
|
|
*/
|
|
|
|
static void PaintScrollbar(nsIRenderingContext& aRenderingContext,
|
|
nsIPresContext& aPresContext,
|
|
const nsRect& aDirtyRect,
|
|
nsRect& aRect,
|
|
PRBool aHorizontal,
|
|
nscoord aOnePixel,
|
|
nsIStyleContext* aScrollbarStyleContext,
|
|
nsIStyleContext* aScrollbarArrowStyleContext,
|
|
nsIFrame* aForFrame,
|
|
nsRect& aFrameRect);
|
|
/**
|
|
* Paint a fixed size checkmark
|
|
*
|
|
* @param aRenderingContext the rendering context
|
|
* @param aPixelsToTwips scale factor for convering pixels to twips.
|
|
*/
|
|
|
|
static void PaintFixedSizeCheckMark(nsIRenderingContext& aRenderingContext,
|
|
float aPixelsToTwips);
|
|
|
|
/**
|
|
* Paint a checkmark
|
|
*
|
|
* @param aRenderingContext the rendering context
|
|
* @param aPixelsToTwips scale factor for convering pixels to twips.
|
|
* @param aWidth width in twips
|
|
* @param aHeight height in twips
|
|
*/
|
|
|
|
static void PaintCheckMark(nsIRenderingContext& aRenderingContext,
|
|
float aPixelsToTwips, PRUint32 aWidth, PRUint32 aHeight);
|
|
|
|
/**
|
|
* Paint a fixed size checkmark border
|
|
*
|
|
* @param aRenderingContext the rendering context
|
|
* @param aPixelsToTwips scale factor for convering pixels to twips.
|
|
* @param aBackgroundColor color for background of the checkbox
|
|
*/
|
|
|
|
static void PaintFixedSizeCheckMarkBorder(nsIRenderingContext& aRenderingContext,
|
|
float aPixelsToTwips, const nsStyleColor& aBackgroundColor);
|
|
|
|
/**
|
|
* Paint a rectangular button. Includes background, string, and focus indicator
|
|
*
|
|
* @param aPresContext the presentation context
|
|
* @param aRenderingContext the rendering context
|
|
* @param aDirtyRect rectangle requiring update
|
|
* @param aRect x,y, width, and height of the button in TWIPS
|
|
* @param aShift if PR_TRUE offset button as if it were pressed
|
|
* @param aShowFocus if PR_TRUE draw focus rectangle over button
|
|
* @param aStyleContext style context used for drawing button background
|
|
* @param aLabel label for button
|
|
* @param aForFrame the frame that the scrollbar will be rendered in to
|
|
*/
|
|
|
|
static void PaintRectangularButton(nsIPresContext& aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect, const nsRect& aRect,
|
|
PRBool aShift, PRBool aShowFocus, PRBool aDisabled,
|
|
PRBool aDrawOutline,
|
|
nsIStyleContext* aOutlineStyle,
|
|
nsIStyleContext* aFocusStyle,
|
|
nsIStyleContext* aStyleContext, nsString& aLabel,
|
|
nsIFrame* aForFrame);
|
|
/**
|
|
* Paint a focus indicator.
|
|
*
|
|
* @param aRenderingContext the rendering context
|
|
* @param aDirtyRect rectangle requiring update
|
|
* @param aInside border inside
|
|
* @param aOutside border outside
|
|
*/
|
|
|
|
static void PaintFocus(nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect, nsRect& aInside, nsRect& aOutside);
|
|
|
|
/**
|
|
* Get the rectangle for a circular area. To maintain the aspect ratio of the circular
|
|
* area the rectangle is offset to center the circular area within the width and height
|
|
* specified.
|
|
*
|
|
* @param aWidth width to center within
|
|
* @param aHeight height to center within
|
|
* @param aRect the computed rectangle centering the circle by setting the x and y of the rect.
|
|
*/
|
|
|
|
static void GetCircularRect(PRUint32 aWidth, PRUint32 aHeight, nsRect& aRect);
|
|
|
|
/**
|
|
* Paint a circular background
|
|
*
|
|
* @param aPresContext the presentation context
|
|
* @param aRenderingContext the rendering context
|
|
* @param aDirtyRect rectangle requiring update
|
|
* @param aStyleContext style context specifying colors and spacing
|
|
* @param aInset if PR_TRUE draw inset, otherwise draw outset
|
|
* @param aForFrame the frame that the scrollbar will be rendered in to
|
|
* @param aWidth width of the border in TWIPS
|
|
* @param aHeight height ofthe border in TWIPS
|
|
*/
|
|
|
|
static void PaintCircularBackground(nsIPresContext& aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect, nsIStyleContext* aStyleContext, PRBool aInset,
|
|
nsIFrame* aForFrame, PRUint32 aWidth, PRUint32 aHeight);
|
|
|
|
|
|
/**
|
|
* Paint a circular border
|
|
*
|
|
* @param aPresContext the presentation context
|
|
* @param aRenderingContext the rendering context
|
|
* @param aDirtyRect rectangle requiring update
|
|
* @param aStyleContext style context specifying colors and spacing
|
|
* @param aInset if PR_TRUE draw inset, otherwise draw outset
|
|
* @param aForFrame the frame that the scrollbar will be rendered in to
|
|
* @param aWidth width of the border in TWIPS
|
|
* @param aHeight height ofthe border in TWIPS
|
|
*/
|
|
|
|
static void PaintCircularBorder(nsIPresContext& aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect, nsIStyleContext* aStyleContext, PRBool aInset,
|
|
nsIFrame* aForFrame, PRUint32 aWidth, PRUint32 aHeight);
|
|
|
|
|
|
|
|
protected:
|
|
nsFormControlHelper();
|
|
virtual ~nsFormControlHelper();
|
|
|
|
|
|
};
|
|
|
|
#endif
|
|
|