gecko-dev/layout/forms/nsFormControlHelper.cpp
kmcclusk%netscape.com 9d22e42a58 Added pseudo styles for file input element buttons and text fields to control their
appearance during printing.
Now returns value of file upload element in nsHTMLInputElement::GetValue.
Added :file-textstyle and :file-buttonstyle pseudo style's to ua.css.
Modified nsButtonControlFrame::PaintButton to accept a rectangle describing the
position and size of the button to paint.
Modified nsFileControlFrame::Paint to resolve :file-buttonstyle and :file-textstyle to
paint the file upload's button and text field using settings in ua.css
Added nsFileControlFrame::HasWidget utility method.
Added nsFormControlHelper::GetInputElementValue to get the current value of an input element
from the DOM.
Modified nsTextControlFrame::GetProperty to use nsFormControlHelper::GetInputElementValue
Modified nsTextControlFrame::PaintTextControl to accept a rectangle describing the position
and size of the text control to paint.
Modified nsTextControl::PaintTextControlBackground to include a rectangle describing the
position and size of the text control background to paint.
1999-02-18 00:13:39 +00:00

1048 lines
37 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.
*/
#include "nsCOMPtr.h"
#include "nsFormControlHelper.h"
#include "nsHTMLParts.h"
#include "nsIHTMLContent.h"
#include "nsIRenderingContext.h"
#include "nsIPresShell.h"
#include "nsIPresContext.h"
#include "nsIStyleContext.h"
#include "nsLeafFrame.h"
#include "nsCSSRendering.h"
#include "nsHTMLIIDs.h"
#include "nsIView.h"
#include "nsIViewManager.h"
#include "nsCoord.h"
#include "nsWidgetsCID.h"
#include "nsViewsCID.h"
#include "nsRepository.h"
#include "nsGUIEvent.h"
#include "nsDOMEvent.h"
#include "nsIFontMetrics.h"
#include "nsIFormControl.h"
#include "nsIDeviceContext.h"
#include "nsHTMLAtoms.h"
#include "nsIButton.h" // remove this when GetCID is pure virtual
#include "nsICheckButton.h" //remove this
#include "nsITextWidget.h" //remove this
#include "nsISupports.h"
#include "nsStyleConsts.h"
#include "nsUnitConversion.h"
#include "nsStyleUtil.h"
#include "nsFormFrame.h"
#include "nsIContent.h"
#include "nsGlobalVariables.h"
#include "nsStyleUtil.h"
#include "nsINameSpaceManager.h"
#include "nsIDOMHTMLInputElement.h"
static NS_DEFINE_IID(kIWidgetIID, NS_IWIDGET_IID);
static NS_DEFINE_IID(kIFormControlIID, NS_IFORMCONTROL_IID);
static NS_DEFINE_IID(kIFormControlFrameIID, NS_IFORMCONTROLFRAME_IID);
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kViewCID, NS_VIEW_CID);
static NS_DEFINE_IID(kIViewIID, NS_IVIEW_IID);
static NS_DEFINE_IID(kIFrameIID, NS_IFRAME_IID);
static NS_DEFINE_IID(kIDOMHTMLInputElementIID, NS_IDOMHTMLINPUTELEMENT_IID);
nsFormControlHelper::nsFormControlHelper()
{
}
nsFormControlHelper::~nsFormControlHelper()
{
}
void nsFormControlHelper::ForceDrawFrame(nsIFrame * aFrame)
{
if (aFrame == nsnull) {
return;
}
nsRect rect;
nsIView * view;
nsPoint pnt;
aFrame->GetOffsetFromView(pnt, &view);
aFrame->GetRect(rect);
rect.x = pnt.x;
rect.y = pnt.y;
if (view != nsnull) {
nsIViewManager * viewMgr;
view->GetViewManager(viewMgr);
if (viewMgr != nsnull) {
viewMgr->UpdateView(view, rect, 0);
NS_RELEASE(viewMgr);
}
}
}
PRBool nsFormControlHelper::GetBool(const nsString& aValue)
{
if (aValue == NS_STRING_TRUE)
return(PR_TRUE);
else
return (PR_FALSE);
}
void nsFormControlHelper::GetBoolString(const PRBool aValue, nsString& aResult)
{
if (PR_TRUE == aValue)
aResult = NS_STRING_TRUE;
else
aResult = NS_STRING_FALSE;
}
nsCompatibility
nsFormControlHelper::GetRepChars(nsIPresContext& aPresContext, char& char1, char& char2)
{
nsCompatibility mode;
aPresContext.GetCompatibilityMode(&mode);
if (eCompatibility_Standard == mode) {
char1 = 'm';
char2 = 'a';
return eCompatibility_Standard;
} else {
char1 = '%';
char2 = '%';
return eCompatibility_NavQuirks;
}
}
nscoord
nsFormControlHelper::GetTextSize(nsIPresContext& aPresContext, nsIFormControlFrame* aFrame,
const nsString& aString, nsSize& aSize,
nsIRenderingContext *aRendContext)
{
nsFont font(aPresContext.GetDefaultFixedFontDeprecated());
aFrame->GetFont(&aPresContext, font);
nsCOMPtr<nsIDeviceContext> deviceContext;
aPresContext.GetDeviceContext(getter_AddRefs(deviceContext));
nsIFontMetrics* fontMet;
deviceContext->GetMetricsFor(font, fontMet);
aRendContext->SetFont(fontMet);
aRendContext->GetWidth(aString, aSize.width);
fontMet->GetHeight(aSize.height);
NS_RELEASE(fontMet);
char char1, char2;
nsCompatibility mode = GetRepChars(aPresContext, char1, char2);
nscoord char1Width, char2Width;
aRendContext->GetWidth(char1, char1Width);
aRendContext->GetWidth(char2, char2Width);
if (eCompatibility_Standard == mode) {
return ((char1Width + char2Width) / 2) + 1;
} else {
return char1Width;
}
}
nscoord
nsFormControlHelper::GetTextSize(nsIPresContext& aPresContext, nsIFormControlFrame* aFrame,
PRInt32 aNumChars, nsSize& aSize,
nsIRenderingContext *aRendContext)
{
nsAutoString val;
char char1, char2;
GetRepChars(aPresContext, char1, char2);
int i;
for (i = 0; i < aNumChars; i+=2) {
val += char1;
}
for (i = 1; i < aNumChars; i+=2) {
val += char2;
}
return GetTextSize(aPresContext, aFrame, val, aSize, aRendContext);
}
PRInt32
nsFormControlHelper::CalculateSize (nsIPresContext* aPresContext, nsIFormControlFrame* aFrame,
const nsSize& aCSSSize, nsInputDimensionSpec& aSpec,
nsSize& aBounds, PRBool& aWidthExplicit,
PRBool& aHeightExplicit, nscoord& aRowHeight,
nsIRenderingContext *aRendContext)
{
nscoord charWidth = 0;
PRInt32 numRows = ATTR_NOTSET;
aWidthExplicit = PR_FALSE;
aHeightExplicit = PR_FALSE;
aBounds.width = CSS_NOTSET;
aBounds.height = CSS_NOTSET;
nsSize textSize(0,0);
nsIContent* iContent = nsnull;
aFrame->GetFormContent((nsIContent*&) iContent);
if (!iContent) {
return 0;
}
nsIHTMLContent* hContent = nsnull;
nsresult result = iContent->QueryInterface(kIHTMLContentIID, (void**)&hContent);
if ((NS_OK != result) || !hContent) {
NS_RELEASE(iContent);
return 0;
}
nsAutoString valAttr;
nsresult valStatus = NS_CONTENT_ATTR_NOT_THERE;
if (nsnull != aSpec.mColValueAttr) {
valStatus = hContent->GetAttribute(kNameSpaceID_HTML, aSpec.mColValueAttr, valAttr);
}
nsHTMLValue colAttr;
nsresult colStatus = NS_CONTENT_ATTR_NOT_THERE;
if (nsnull != aSpec.mColSizeAttr) {
colStatus = hContent->GetHTMLAttribute(aSpec.mColSizeAttr, colAttr);
}
float p2t;
aPresContext->GetScaledPixelsToTwips(&p2t);
// determine the width
nscoord adjSize;
if (NS_CONTENT_ATTR_HAS_VALUE == colStatus) { // col attr will provide width
PRInt32 col = ((colAttr.GetUnit() == eHTMLUnit_Pixel) ? colAttr.GetPixelValue() : colAttr.GetIntValue());
if (aSpec.mColSizeAttrInPixels) {
col = (col <= 0) ? 15 : col;
aBounds.width = NSIntPixelsToTwips(col, p2t);
}
else {
col = (col <= 0) ? 1 : col;
charWidth = GetTextSize(*aPresContext, aFrame, col, aBounds, aRendContext);
aRowHeight = aBounds.height; // XXX aBounds.height has CSS_NOTSET
}
if (aSpec.mColSizeAttrInPixels) {
aWidthExplicit = PR_TRUE;
}
}
else {
if (CSS_NOTSET != aCSSSize.width) { // css provides width
aBounds.width = (aCSSSize.width > 0) ? aCSSSize.width : 1;
aWidthExplicit = PR_TRUE;
}
else {
if (NS_CONTENT_ATTR_HAS_VALUE == valStatus) { // use width of initial value
charWidth = GetTextSize(*aPresContext, aFrame, valAttr, aBounds, aRendContext);
}
else if (aSpec.mColDefaultValue) { // use default value
charWidth = GetTextSize(*aPresContext, aFrame, *aSpec.mColDefaultValue, aBounds, aRendContext);
}
else if (aSpec.mColDefaultSizeInPixels) { // use default width in pixels
charWidth = GetTextSize(*aPresContext, aFrame, 1, aBounds, aRendContext);
aBounds.width = aSpec.mColDefaultSize;
}
else { // use default width in num characters
charWidth = GetTextSize(*aPresContext, aFrame, aSpec.mColDefaultSize, aBounds, aRendContext);
}
aRowHeight = aBounds.height; // XXX aBounds.height has CSS_NOTSET
}
}
// determine the height
nsHTMLValue rowAttr;
nsresult rowStatus = NS_CONTENT_ATTR_NOT_THERE;
if (nsnull != aSpec.mRowSizeAttr) {
rowStatus = hContent->GetHTMLAttribute(aSpec.mRowSizeAttr, rowAttr);
}
if (NS_CONTENT_ATTR_HAS_VALUE == rowStatus) { // row attr will provide height
PRInt32 rowAttrInt = ((rowAttr.GetUnit() == eHTMLUnit_Pixel) ? rowAttr.GetPixelValue() : rowAttr.GetIntValue());
adjSize = (rowAttrInt > 0) ? rowAttrInt : 1;
if (0 == charWidth) {
charWidth = GetTextSize(*aPresContext, aFrame, 1, textSize, aRendContext);
aBounds.height = textSize.height * adjSize;
aRowHeight = textSize.height;
numRows = adjSize;
}
else {
aBounds.height = aBounds.height * adjSize;
}
}
else if (CSS_NOTSET != aCSSSize.height) { // css provides height
aBounds.height = (aCSSSize.height > 0) ? aCSSSize.height : 1;
aHeightExplicit = PR_TRUE;
}
else { // use default height in num lines
if (0 == charWidth) {
charWidth = GetTextSize(*aPresContext, aFrame, 1, textSize, aRendContext);
aBounds.height = textSize.height * aSpec.mRowDefaultSize;
aRowHeight = textSize.height;
}
else {
aBounds.height = aBounds.height * aSpec.mRowDefaultSize;
}
}
if ((0 == charWidth) || (0 == textSize.width)) {
charWidth = GetTextSize(*aPresContext, aFrame, 1, textSize, aRendContext);
aRowHeight = textSize.height;
}
// add inside padding if necessary
if (!aWidthExplicit) {
aBounds.width += (2 * aFrame->GetHorizontalInsidePadding(*aPresContext, p2t, aBounds.width, charWidth));
}
if (!aHeightExplicit) {
aBounds.height += (2 * aFrame->GetVerticalInsidePadding(p2t, textSize.height));
}
NS_RELEASE(hContent);
if (ATTR_NOTSET == numRows) {
numRows = aBounds.height / aRowHeight;
}
NS_RELEASE(iContent);
return numRows;
}
// this handles all of the input types rather than having them do it.
void
nsFormControlHelper::GetFont(nsIFormControlFrame * aFormFrame,
nsIPresContext* aPresContext,
nsIStyleContext * aStyleContext,
nsFont& aFont)
{
const nsStyleFont* styleFont = (const nsStyleFont*)aStyleContext->GetStyleData(eStyleStruct_Font);
nsCompatibility mode;
aPresContext->GetCompatibilityMode(&mode);
if (eCompatibility_Standard == mode) {
aFont = styleFont->mFont;
return;
}
PRInt32 type;
aFormFrame->GetType(&type);
switch (type) {
case NS_FORM_INPUT_TEXT:
case NS_FORM_TEXTAREA:
case NS_FORM_INPUT_PASSWORD:
aFont = styleFont->mFixedFont;
break;
case NS_FORM_INPUT_BUTTON:
case NS_FORM_INPUT_SUBMIT:
case NS_FORM_INPUT_RESET:
case NS_FORM_SELECT:
if ((styleFont->mFlags & NS_STYLE_FONT_FACE_EXPLICIT) ||
(styleFont->mFlags & NS_STYLE_FONT_SIZE_EXPLICIT)) {
aFont = styleFont->mFixedFont;
aFont.weight = NS_FONT_WEIGHT_NORMAL; // always normal weight
aFont.size = styleFont->mFont.size; // normal font size
if (0 == (styleFont->mFlags & NS_STYLE_FONT_FACE_EXPLICIT)) {
aFont.name = "Arial"; // XXX windows specific font
}
} else {
// use arial, scaled down one HTML size
// italics, decoration & variant(?) get used
aFont = styleFont->mFont;
aFont.name = "Arial"; // XXX windows specific font
aFont.weight = NS_FONT_WEIGHT_NORMAL;
const nsFont& normal = aPresContext->GetDefaultFontDeprecated();
PRInt32 scaler;
aPresContext->GetFontScaler(&scaler);
float scaleFactor = nsStyleUtil::GetScalingFactor(scaler);
PRInt32 fontIndex = nsStyleUtil::FindNextSmallerFontSize(aFont.size, (PRInt32)normal.size, scaleFactor);
aFont.size = nsStyleUtil::CalcFontPointSize(fontIndex, (PRInt32)normal.size, scaleFactor);
}
break;
}
}
//
//-------------------------------------------------------------------------------------
// Utility methods for rendering Form Elements using GFX
//-------------------------------------------------------------------------------------
//
void
nsFormControlHelper::PaintLine(nsIRenderingContext& aRenderingContext,
nscoord aSX, nscoord aSY, nscoord aEX, nscoord aEY,
PRBool aHorz, nscoord aWidth, nscoord aOnePixel)
{
nsPoint p[5];
if (aHorz) {
aEX++;
p[0].x = nscoord(float(aSX)*aOnePixel);
p[0].y = nscoord(float(aSY)*aOnePixel);
p[1].x = nscoord(float(aEX)*aOnePixel);
p[1].y = nscoord(float(aEY)*aOnePixel);
p[2].x = nscoord(float(aEX)*aOnePixel);
p[2].y = nscoord(float(aEY+1)*aOnePixel);
p[3].x = nscoord(float(aSX)*aOnePixel);
p[3].y = nscoord(float(aSY+1)*aOnePixel);
p[4].x = nscoord(float(aSX)*aOnePixel);
p[4].y = nscoord(float(aSY)*aOnePixel);
} else {
aEY++;
p[0].x = nscoord(float(aSX)*aOnePixel);
p[0].y = nscoord(float(aSY)*aOnePixel);
p[1].x = nscoord(float(aEX)*aOnePixel);
p[1].y = nscoord(float(aEY)*aOnePixel);
p[2].x = nscoord(float(aEX+1)*aOnePixel);
p[2].y = nscoord(float(aEY)*aOnePixel);
p[3].x = nscoord(float(aSX+1)*aOnePixel);
p[3].y = nscoord(float(aSY)*aOnePixel);
p[4].x = nscoord(float(aSX)*aOnePixel);
p[4].y = nscoord(float(aSY)*aOnePixel);
}
aRenderingContext.FillPolygon(p, 5);
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Offset for arrow centerpoint
static const nscoord nsArrowOffsetX = 3;
static const nscoord nsArrowOffsetY = 3;
static nscoord nsArrowRightPoints[] = {0, 0, 0, 6, 6, 3 };
static nscoord nsArrowLeftPoints[] = {0, 3, 6, 0, 6, 6 };
static nscoord nsArrowUpPoints[] = {3, 0, 6, 6, 0, 6 };
static nscoord nsArrowDownPoints[] = {0, 0, 3, 6, 6, 0 };
//---------------------------------------------------------------------------
void
nsFormControlHelper::SetupPoints(PRUint32 aNumberOfPoints, nscoord* aPoints, nsPoint* aPolygon, nscoord aScaleFactor, nscoord aX, nscoord aY,
nscoord aCenterX, nscoord aCenterY)
{
const nscoord offsetX = aCenterX * aScaleFactor;
const nscoord offsetY = aCenterY * aScaleFactor;
PRUint32 i = 0;
PRUint32 count = 0;
for (i = 0; i < aNumberOfPoints; i++) {
aPolygon[i].x = (aPoints[count] * aScaleFactor) + aX - offsetX;
count++;
aPolygon[i].y = (aPoints[count] * aScaleFactor) + aY - offsetY;
count++;
}
}
//---------------------------------------------------------------------------
void
nsFormControlHelper::PaintArrowGlyph(nsIRenderingContext& aRenderingContext,
nscoord aSX, nscoord aSY, nsArrowDirection aArrowDirection,
nscoord aOnePixel)
{
nsPoint polygon[3];
switch(aArrowDirection)
{
case eArrowDirection_Left:
SetupPoints(3, nsArrowLeftPoints, polygon, aOnePixel, aSX, aSY, nsArrowOffsetX, nsArrowOffsetY);
break;
case eArrowDirection_Right:
SetupPoints(3, nsArrowRightPoints, polygon, aOnePixel, aSX, aSY, nsArrowOffsetX, nsArrowOffsetY);
break;
case eArrowDirection_Up:
SetupPoints(3, nsArrowUpPoints, polygon, aOnePixel, aSX, aSY, nsArrowOffsetX, nsArrowOffsetY);
break;
case eArrowDirection_Down:
SetupPoints(3, nsArrowDownPoints, polygon, aOnePixel, aSX, aSY, nsArrowOffsetX, nsArrowOffsetY);
break;
}
aRenderingContext.FillPolygon(polygon, 3);
}
//---------------------------------------------------------------------------
void
nsFormControlHelper::PaintArrow(nsArrowDirection aArrowDirection,
nsIRenderingContext& aRenderingContext,
nsIPresContext& aPresContext,
const nsRect& aDirtyRect,
nsRect& aRect,
nscoord aOnePixel,
nsIStyleContext* aArrowStyle,
const nsStyleSpacing& aSpacing,
nsIFrame* aForFrame,
nsRect& aFrameRect)
{
// Draw border using CSS
const nsStyleColor* color = (const nsStyleColor*)
aArrowStyle->GetStyleData(eStyleStruct_Color);
nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, aForFrame,
aDirtyRect, aRect, *color, aSpacing, 0, 0);
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, aForFrame,
aDirtyRect, aRect, aSpacing, aArrowStyle, 0);
// Draw the glyph in black
aRenderingContext.SetColor(NS_RGB(0, 0, 0));
// Draw arrow centered in the rectangle
PaintArrowGlyph(aRenderingContext, aRect.x + (aRect.width / 2), aRect.y + (aRect.height / 2), aArrowDirection, aOnePixel);
}
//---------------------------------------------------------------------------
void
nsFormControlHelper::PaintScrollbar(nsIRenderingContext& aRenderingContext,
nsIPresContext& aPresContext,
const nsRect& aDirtyRect,
nsRect& aRect,
PRBool aHorizontal,
nscoord aOnePixel,
nsIStyleContext* aScrollbarStyleContext,
nsIStyleContext* aScrollbarArrowStyleContext,
nsIFrame* aForFrame,
nsRect& aFrameRect)
{
// Get the Scrollbar's Style structs
const nsStyleColor* scrollbarColor =
(const nsStyleColor*)aScrollbarStyleContext->GetStyleData(eStyleStruct_Color);
// Get the Scrollbar's Arrow's Style structs
const nsStyleSpacing* arrowSpacing =
(const nsStyleSpacing*)aScrollbarArrowStyleContext->GetStyleData(eStyleStruct_Spacing);
const nsStyleColor* arrowColor =
(const nsStyleColor*)aScrollbarArrowStyleContext->GetStyleData(eStyleStruct_Color);
// Paint background for scrollbar
nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, aForFrame,
aDirtyRect, aRect, *scrollbarColor, *arrowSpacing, 0, 0);
if (PR_TRUE == aHorizontal) {
// Draw horizontal Arrow
nscoord arrowWidth = aRect.height;
nsRect arrowLeftRect(aRect.x, aRect.y, arrowWidth, arrowWidth);
PaintArrow(eArrowDirection_Left,aRenderingContext,aPresContext,
aDirtyRect, arrowLeftRect,aOnePixel, aScrollbarArrowStyleContext,
*arrowSpacing, aForFrame, aFrameRect);
nsRect thumbRect(aRect.x+arrowWidth, aRect.y, arrowWidth, arrowWidth);
nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, aForFrame,
aDirtyRect, thumbRect, *arrowColor, *arrowSpacing, 0, 0);
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, aForFrame,
aDirtyRect, thumbRect, *arrowSpacing,aScrollbarArrowStyleContext, 0);
nsRect arrowRightRect(aRect.x + (aRect.width - arrowWidth), aRect.y, arrowWidth, arrowWidth);
PaintArrow(eArrowDirection_Right,aRenderingContext,aPresContext,
aDirtyRect, arrowRightRect,aOnePixel, aScrollbarArrowStyleContext,
*arrowSpacing, aForFrame, aFrameRect);
}
else {
// Paint vertical arrow
nscoord arrowHeight = aRect.width;
nsRect arrowUpRect(aRect.x, aRect.y, arrowHeight, arrowHeight);
PaintArrow(eArrowDirection_Up,aRenderingContext,aPresContext,
aDirtyRect, arrowUpRect,aOnePixel, aScrollbarArrowStyleContext,
*arrowSpacing, aForFrame, aFrameRect);
nsRect thumbRect(aRect.x, aRect.y+arrowHeight, arrowHeight, arrowHeight);
nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, aForFrame,
aDirtyRect, thumbRect, *arrowColor, *arrowSpacing, 0, 0);
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, aForFrame,
aDirtyRect, thumbRect, *arrowSpacing,aScrollbarArrowStyleContext, 0);
nsRect arrowDownRect(aRect.x, aRect.y + (aRect.height - arrowHeight), arrowHeight, arrowHeight);
PaintArrow(eArrowDirection_Down,aRenderingContext,aPresContext,
aDirtyRect, arrowDownRect,aOnePixel, aScrollbarArrowStyleContext,
*arrowSpacing, aForFrame, aFrameRect);
}
}
void
nsFormControlHelper::PaintFixedSizeCheckMark(nsIRenderingContext& aRenderingContext,
float aPixelsToTwips)
{
// Offsets to x,y location, These offsets are used to place the checkmark in the middle
// of it's 12X12 pixel box.
const PRUint32 ox = 3;
const PRUint32 oy = 3;
nscoord onePixel = NSIntPixelsToTwips(1, aPixelsToTwips);
// Draw checkmark using a series of rectangles. This builds an replica of the
// way the checkmark looks under Windows. Using a polygon does not correctly
// represent a checkmark under Windows. This is due to round-off error in the
// Twips to Pixel conversions.
PaintLine(aRenderingContext, 0 + ox, 2 + oy, 0 + ox, 4 + oy, PR_FALSE, 1, onePixel);
PaintLine(aRenderingContext, 1 + ox, 3 + oy, 1 + ox, 5 + oy, PR_FALSE, 1, onePixel);
PaintLine(aRenderingContext, 2 + ox, 4 + oy, 2 + ox, 6 + oy, PR_FALSE, 1, onePixel);
PaintLine(aRenderingContext, 3 + ox, 3 + oy, 3 + ox, 5 + oy, PR_FALSE, 1, onePixel);
PaintLine(aRenderingContext, 4 + ox, 2 + oy, 4 + ox, 4 + oy, PR_FALSE, 1, onePixel);
PaintLine(aRenderingContext, 5 + ox, 1 + oy, 5 + ox, 3 + oy, PR_FALSE, 1, onePixel);
PaintLine(aRenderingContext, 6 + ox, 0 + oy, 6 + ox, 2 + oy, PR_FALSE, 1, onePixel);
}
void
nsFormControlHelper::PaintFixedSizeCheckMarkBorder(nsIRenderingContext& aRenderingContext,
float aPixelsToTwips, const nsStyleColor& aBackgroundColor)
{
// Offsets to x,y location
PRUint32 ox = 0;
PRUint32 oy = 0;
nscoord onePixel = NSIntPixelsToTwips(1, aPixelsToTwips);
nscoord twelvePixels = NSIntPixelsToTwips(12, aPixelsToTwips);
// Draw Background
aRenderingContext.SetColor(aBackgroundColor.mColor);
nsRect rect(0, 0, twelvePixels, twelvePixels);
aRenderingContext.FillRect(rect);
// Draw Border
aRenderingContext.SetColor(NS_RGB(128, 128, 128));
PaintLine(aRenderingContext, 0 + ox, 0 + oy, 11 + ox, 0 + oy, PR_TRUE, 1, onePixel);
PaintLine(aRenderingContext, 0 + ox, 0 + oy, 0 + ox, 11 + oy, PR_FALSE, 1, onePixel);
aRenderingContext.SetColor(NS_RGB(192, 192, 192));
PaintLine(aRenderingContext, 1 + ox, 11 + oy, 11 + ox, 11 + oy, PR_TRUE, 1, onePixel);
PaintLine(aRenderingContext, 11 + ox, 1 + oy, 11 + ox, 11 + oy, PR_FALSE, 1, onePixel);
aRenderingContext.SetColor(NS_RGB(0, 0, 0));
PaintLine(aRenderingContext, 1 + ox, 1 + oy, 10 + ox, 1 + oy, PR_TRUE, 1, onePixel);
PaintLine(aRenderingContext, 1 + ox, 1 + oy, 1 + ox, 10 + oy, PR_FALSE, 1, onePixel);
}
//Draw a checkmark in any size.
void
nsFormControlHelper::PaintCheckMark(nsIRenderingContext& aRenderingContext,
float aPixelsToTwips, PRUint32 aWidth, PRUint32 aHeight)
{
// Width and height of the fixed size checkmark in TWIPS.
const PRUint32 fixedSizeCheckmarkWidth = 165;
const PRUint32 fixedSizeCheckmarkHeight = 165;
if ((fixedSizeCheckmarkWidth == aWidth) &&
(fixedSizeCheckmarkHeight == aHeight)) {
// Standard size, so draw a fixed size check mark instead of a scaled check mark.
PaintFixedSizeCheckMark(aRenderingContext, aPixelsToTwips);
return;
}
const PRUint32 checkpoints = 7;
const PRUint32 checksize = 9; //This is value is determined by added 2 units to the end
//of the 7X& pixel rectangle below to provide some white space
//around the checkmark when it is rendered.
// Points come from the coordinates on a 7X7 pixels
// box with 0,0 at the lower left.
nscoord checkedPolygonDef[] = {0,2, 2,4, 6,0 , 6,2, 2,6, 0,4, 0,2 };
// Location of the center point of the checkmark
const PRUint32 centerx = 3;
const PRUint32 centery = 3;
nsPoint checkedPolygon[checkpoints];
PRUint32 defIndex = 0;
PRUint32 polyIndex = 0;
// Scale the checkmark based on the smallest dimension
PRUint32 size = aWidth / checksize;
if (aHeight < aWidth) {
size = aHeight / checksize;
}
// Center and offset each point in the polygon definition.
for (defIndex = 0; defIndex < (checkpoints * 2); defIndex++) {
checkedPolygon[polyIndex].x = nscoord((((checkedPolygonDef[defIndex]) - centerx) * (size)) + (aWidth / 2));
defIndex++;
checkedPolygon[polyIndex].y = nscoord((((checkedPolygonDef[defIndex]) - centery) * (size)) + (aHeight / 2));
polyIndex++;
}
aRenderingContext.FillPolygon(checkedPolygon, checkpoints);
}
void
nsFormControlHelper::PaintFocus(nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect, nsRect& aInside, nsRect& aOutside)
{
// draw dashed line to indicate selection, XXX don't calc rect every time
PRUint8 borderStyles[4];
nscolor borderColors[4];
nscolor black = NS_RGB(0,0,0);
for (PRInt32 i = 0; i < 4; i++) {
borderStyles[i] = NS_STYLE_BORDER_STYLE_DOTTED;
borderColors[i] = black;
}
nsCSSRendering::DrawDashedSides(0, aRenderingContext, borderStyles, borderColors, aOutside,
aInside, PR_FALSE, nsnull);
}
void
nsFormControlHelper::PaintRectangularButton(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect, const nsRect& aRect,
PRBool aPressed,
PRBool aShowFocus,
PRBool aDisabled,
PRBool aDrawOutline,
nsIStyleContext* outlineStyle,
nsIStyleContext* focusStyle,
nsIStyleContext* aStyleContext,
nsString& aLabel,
nsIFrame* aForFrame)
{
nsIFormControlFrame * formFrame;
nsresult result = aForFrame->QueryInterface(kIFormControlFrameIID, (void**)&formFrame);
if (NS_OK != result) {
NS_RELEASE(formFrame);
}
aRenderingContext.PushState();
// Draw border using CSS
// Get the Scrollbar's Arrow's Style structs
const nsStyleSpacing* spacing =
(const nsStyleSpacing*)aStyleContext->GetStyleData(eStyleStruct_Spacing);
const nsStyleColor* color =
(const nsStyleColor*)aStyleContext->GetStyleData(eStyleStruct_Color);
nsRect rect(aRect.x, aRect.y, aRect.width, aRect.height);
const nsStyleSpacing* outline = (const nsStyleSpacing*)outlineStyle->GetStyleData(eStyleStruct_Spacing);
const nsStyleSpacing* focus = (const nsStyleSpacing*)focusStyle->GetStyleData(eStyleStruct_Spacing);
nsMargin outlineBorder;
outline->CalcBorderFor(aForFrame, outlineBorder);
nsMargin focusBorder;
focus->CalcBorderFor(aForFrame, focusBorder);
int left = (focusBorder.left > outlineBorder.left) ? focusBorder.left : outlineBorder.left;
int right = (focusBorder.right > outlineBorder.right) ? focusBorder.right : outlineBorder.right;
int top = (focusBorder.top > outlineBorder.top) ? focusBorder.top : outlineBorder.top;
int bottom = (focusBorder.bottom > outlineBorder.bottom) ? focusBorder.bottom : outlineBorder.bottom;
if (aShowFocus) {
int l = left - focusBorder.left;
int t = top - focusBorder.top;
int b = bottom - focusBorder.bottom;
int r = right - focusBorder.right;
int w = aRect.width - (l + r);
int h = aRect.height - (t + b);
nsRect focusRect(l, t, w, h);
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, aForFrame,
aDirtyRect, focusRect, *focus, aStyleContext, 0);
}
if (aDrawOutline) {
int l = left - outlineBorder.left;
int t = top - outlineBorder.top;
int b = bottom - outlineBorder.bottom;
int r = right - outlineBorder.right;
int w = aRect.width - (l + r);
int h = aRect.height - (t + b);
nsRect outlineRect(l, t, w, h);
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, aForFrame,
aDirtyRect, outlineRect, *outline, aStyleContext, 0);
}
rect.x += left;
rect.y += right;
rect.width -= (left + right);
rect.height -= (top + bottom);
nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, aForFrame,
aDirtyRect, rect, *color, *spacing, 0, 0);
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, aForFrame,
aDirtyRect, rect, *spacing,aStyleContext, 0);
nsMargin border;
spacing->CalcBorderFor(aForFrame, border);
float p2t;
aPresContext.GetScaledPixelsToTwips(&p2t);
nscoord onePixel = NSIntPixelsToTwips(1, p2t);
nsRect outside(aRect.x, aRect.y, aRect.width, aRect.height);
outside.Deflate(border);
outside.Deflate(onePixel, onePixel);
nsRect inside(outside);
inside.Deflate(onePixel, onePixel);
/*
if (aShowFocus) {
PaintFocus(aRenderingContext,
aDirtyRect, inside, outside);
}
*/
aRenderingContext.SetColor(NS_RGB(255,255,255));
float appUnits;
float devUnits;
float scale;
nsIDeviceContext * context;
aRenderingContext.GetDeviceContext(context);
context->GetCanonicalPixelScale(scale);
context->GetAppUnitsToDevUnits(devUnits);
context->GetDevUnitsToAppUnits(appUnits);
nsFont font(aPresContext.GetDefaultFixedFontDeprecated());
formFrame->GetFont(&aPresContext, font);
aRenderingContext.SetFont(font);
nscoord ascent;
nscoord descent;
nscoord textWidth;
nscoord textHeight;
aRenderingContext.GetWidth(aLabel, textWidth);
nsIFontMetrics* metrics;
context->GetMetricsFor(font, metrics);
metrics->GetMaxAscent(ascent);
metrics->GetMaxDescent(descent);
textHeight = ascent + descent;
nscoord x = ((inside.width - textWidth) / 2) + inside.x;
nscoord y = ((inside.height - textHeight) / 2) + inside.y;
if (PR_TRUE == aPressed) {
x += onePixel;
y += onePixel;
}
if (aDisabled) {
aRenderingContext.SetColor(NS_RGB(255,255,255));
aRenderingContext.DrawString(aLabel, x+onePixel, y+onePixel);
}
aRenderingContext.SetColor(color->mColor);
aRenderingContext.DrawString(aLabel, x, y);
NS_RELEASE(context);
PRBool clipEmpty;
aRenderingContext.PopState(clipEmpty);
NS_RELEASE(formFrame);
}
void
nsFormControlHelper::GetCircularRect(PRUint32 aWidth, PRUint32 aHeight, nsRect& aRect)
{
if (aWidth > aHeight)
aRect.SetRect((aWidth/2) - (aHeight/2), 0, aHeight, aHeight);
else
aRect.SetRect(0, (aHeight/2) - (aWidth/2), aWidth, aWidth);
}
void
nsFormControlHelper::PaintCircularBackground(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect, nsIStyleContext* aStyleContext, PRBool aInset,
nsIFrame* aForFrame, PRUint32 aWidth, PRUint32 aHeight)
{
float p2t;
aPresContext.GetScaledPixelsToTwips(&p2t);
nscoord onePixel = NSIntPixelsToTwips(1, p2t);
nsRect outside;
nsFormControlHelper::GetCircularRect(aWidth, aHeight, outside);
outside.Deflate(onePixel, onePixel);
outside.Deflate(onePixel, onePixel);
const nsStyleColor* color = (const nsStyleColor*)
aStyleContext->GetStyleData(eStyleStruct_Color);
aRenderingContext.SetColor(color->mBackgroundColor);
aRenderingContext.FillArc(outside, 0, 180);
aRenderingContext.FillArc(outside, 180, 360);
}
void
nsFormControlHelper::PaintCircularBorder(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect, nsIStyleContext* aStyleContext, PRBool aInset,
nsIFrame* aForFrame, PRUint32 aWidth, PRUint32 aHeight)
{
const PRUint32 standardWidth = 180;
const PRUint32 standardHeight = 180;
aRenderingContext.PushState();
float p2t;
aPresContext.GetScaledPixelsToTwips(&p2t);
const nsStyleSpacing* spacing = (const nsStyleSpacing*)aStyleContext->GetStyleData(eStyleStruct_Spacing);
nsMargin border;
spacing->CalcBorderFor(aForFrame, border);
nscoord onePixel = NSIntPixelsToTwips(1, p2t);
nscoord twelvePixels = NSIntPixelsToTwips(12, p2t);
nsRect outside(0, 0, aWidth, aHeight);
PRBool standardSize = ((aWidth == standardWidth) && (aHeight == standardHeight));
if (PR_TRUE == standardSize) {
outside.SetRect(0, 0, twelvePixels, twelvePixels);
if (PR_TRUE == aInset) {
outside.Deflate(onePixel, onePixel);
outside.Deflate(onePixel, onePixel);
aRenderingContext.SetColor(NS_RGB(192,192,192));
aRenderingContext.FillArc(outside, 0, 180);
aRenderingContext.FillArc(outside, 180, 360);
outside.SetRect(0, 0, twelvePixels, twelvePixels);
}
// DrakGray
// PRUint8 borderStyle = aBorderStyle.GetBorderStyle(NS_SIDE_TOP),
// nscolor borderColor = aBorderStyle.GetBorderColor(NS_SIDE_TOP),
aRenderingContext.SetColor(NS_RGB(128,128,128));
// aRenderingContext.SetColor(borderColor);
PaintLine(aRenderingContext, 4, 0, 7, 0, PR_TRUE, 1, onePixel);
PaintLine(aRenderingContext, 2, 1, 3, 1, PR_TRUE, 1, onePixel);
PaintLine(aRenderingContext, 8, 1, 9, 1, PR_TRUE, 1, onePixel);
PaintLine(aRenderingContext, 1, 2, 1, 3, PR_FALSE, 1, onePixel);
PaintLine(aRenderingContext, 0, 4, 0, 7, PR_FALSE, 1, onePixel);
PaintLine(aRenderingContext, 1, 8, 1, 9, PR_FALSE, 1, onePixel);
// Black
// nscolor borderColor = aBorderStyle.GetBorderColor(NS_SIDE_BOTTOM);
// aRenderingContext.SetColor(borderColor);
aRenderingContext.SetColor(NS_RGB(0,0,0));
PaintLine(aRenderingContext, 4, 1, 7, 1, PR_TRUE, 1, onePixel);
PaintLine(aRenderingContext, 2, 2, 3, 2, PR_TRUE, 1, onePixel);
PaintLine(aRenderingContext, 8, 2, 9, 2, PR_TRUE, 1, onePixel);
PaintLine(aRenderingContext, 2, 2, 2, 3, PR_FALSE, 1, onePixel);
PaintLine(aRenderingContext, 1, 4, 1, 7, PR_FALSE, 1, onePixel);
PaintLine(aRenderingContext, 2, 8, 2, 8, PR_FALSE, 1, onePixel);
// Gray
aRenderingContext.SetColor(NS_RGB(192, 192, 192));
PaintLine(aRenderingContext, 2, 9, 3, 9, PR_TRUE, 1, onePixel);
PaintLine(aRenderingContext, 8, 9, 9, 9, PR_TRUE, 1, onePixel);
PaintLine(aRenderingContext, 4, 10, 7, 10, PR_TRUE, 1, onePixel);
PaintLine(aRenderingContext, 9, 3, 9, 3, PR_FALSE, 1, onePixel);
PaintLine(aRenderingContext, 10, 4, 10, 7, PR_FALSE, 1, onePixel);
PaintLine(aRenderingContext, 9, 8, 9, 9, PR_FALSE, 1, onePixel);
outside.Deflate(onePixel, onePixel);
outside.Deflate(onePixel, onePixel);
outside.Deflate(onePixel, onePixel);
outside.Deflate(onePixel, onePixel);
} else {
nsRect outside;
nsFormControlHelper::GetCircularRect(aWidth, aHeight, outside);
aRenderingContext.SetColor(NS_RGB(128,128,128));
aRenderingContext.FillArc(outside, 46, 225);
aRenderingContext.SetColor(NS_RGB(255,255,255));
aRenderingContext.FillArc(outside, 225, 360);
aRenderingContext.FillArc(outside, 0, 44);
outside.Deflate(onePixel, onePixel);
aRenderingContext.SetColor(NS_RGB(0,0,0));
aRenderingContext.FillArc(outside, 46, 225);
aRenderingContext.SetColor(NS_RGB(192,192,192));
aRenderingContext.FillArc(outside, 225, 360);
aRenderingContext.FillArc(outside, 0, 44);
}
PRBool clip;
aRenderingContext.PopState(clip);
}
nsresult
nsFormControlHelper::GetName(nsIContent* aContent,nsString* aResult)
{
nsresult result = NS_FORM_NOTOK;
if (nsnull != aContent) {
nsIHTMLContent* formControl = nsnull;
result = aContent->QueryInterface(kIHTMLContentIID, (void**)&formControl);
if ((NS_OK == result) && formControl) {
nsHTMLValue value;
result = formControl->GetHTMLAttribute(nsHTMLAtoms::name, value);
if (NS_CONTENT_ATTR_HAS_VALUE == result) {
if (eHTMLUnit_String == value.GetUnit()) {
value.GetStringValue(*aResult);
}
}
NS_RELEASE(formControl);
}
}
return result;
}
nsresult
nsFormControlHelper::GetValue(nsIContent* aContent, nsString* aResult)
{
nsresult result = NS_FORM_NOTOK;
if (nsnull != aContent) {
nsIHTMLContent* formControl = nsnull;
result = aContent->QueryInterface(kIHTMLContentIID, (void**)&formControl);
if ((NS_OK == result) && formControl) {
nsHTMLValue value;
result = formControl->GetHTMLAttribute(nsHTMLAtoms::value, value);
if (NS_CONTENT_ATTR_HAS_VALUE == result) {
if (eHTMLUnit_String == value.GetUnit()) {
value.GetStringValue(*aResult);
}
}
NS_RELEASE(formControl);
}
}
return result;
}
nsresult
nsFormControlHelper::GetInputElementValue(nsIContent* aContent, nsString* aText, PRBool aInitialValue)
{
nsresult result = NS_OK;
nsIDOMHTMLInputElement* inputElem = nsnull;
result = aContent->QueryInterface(kIDOMHTMLInputElementIID, (void**)&inputElem);
if ((NS_OK == result) && inputElem) {
if (PR_TRUE == aInitialValue) {
result = inputElem->GetDefaultValue(*aText);
}
else {
result = inputElem->GetValue(*aText);
}
NS_RELEASE(inputElem);
}
return result;
}