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334 lines
12 KiB
C++
334 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsCOMPtr.h"
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#include "nsFormControlHelper.h"
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#include "nsHTMLParts.h"
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#include "nsGenericHTMLElement.h"
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#include "nsIRenderingContext.h"
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#include "nsIPresShell.h"
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#include "nsPresContext.h"
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#include "nsStyleContext.h"
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#include "nsLeafFrame.h"
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#include "nsCSSRendering.h"
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#include "nsIView.h"
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#include "nsIViewManager.h"
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#include "nsCoord.h"
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#include "nsWidgetsCID.h"
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#include "nsViewsCID.h"
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#include "nsIComponentManager.h"
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#include "nsGUIEvent.h"
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#include "nsIFontMetrics.h"
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#include "nsIFormControl.h"
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#include "nsIDeviceContext.h"
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#include "nsHTMLAtoms.h"
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#include "nsISupports.h"
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#include "nsStyleConsts.h"
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#include "nsUnitConversion.h"
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#include "nsIContent.h"
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#include "nsIDOMHTMLInputElement.h"
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#include "nsNetCID.h"
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// Needed for Localization
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#include "nsIServiceManager.h"
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#include "nsIStringBundle.h"
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#include "nsITextContent.h"
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#include "nsISupportsArray.h"
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#include "nsXPIDLString.h"
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// done I10N
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nsFormControlHelper::nsFormControlHelper()
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{
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MOZ_COUNT_CTOR(nsFormControlHelper);
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}
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nsFormControlHelper::~nsFormControlHelper()
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{
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MOZ_COUNT_DTOR(nsFormControlHelper);
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}
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void nsFormControlHelper::PlatformToDOMLineBreaks(nsString &aString)
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{
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// Windows linebreaks: Map CRLF to LF:
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aString.ReplaceSubstring(NS_LITERAL_STRING("\r\n").get(), NS_LITERAL_STRING("\n").get());
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// Mac linebreaks: Map any remaining CR to LF:
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aString.ReplaceSubstring(NS_LITERAL_STRING("\r").get(), NS_LITERAL_STRING("\n").get());
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}
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PRBool nsFormControlHelper::GetBool(const nsAString& aValue)
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{
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return aValue.Equals(NS_STRING_TRUE);
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}
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void nsFormControlHelper::GetBoolString(const PRBool aValue,
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nsAString& aResult)
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{
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if (aValue)
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aResult.Assign(NS_STRING_TRUE);
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else
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aResult.Assign(NS_STRING_FALSE);
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}
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nsresult nsFormControlHelper::GetFrameFontFM(nsIFrame* aFrame,
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nsIFontMetrics** aFontMet)
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{
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nsStyleContext* sc = aFrame->GetStyleContext();
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return aFrame->GetPresContext()->DeviceContext()->
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GetMetricsFor(sc->GetStyleFont()->mFont,
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sc->GetStyleVisibility()->mLangGroup,
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*aFontMet);
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}
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PRBool
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nsFormControlHelper::GetWrapPropertyEnum(nsIContent * aContent, nsHTMLTextWrap& aWrapProp)
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{
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// soft is the default; "physical" defaults to soft as well because all other
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// browsers treat it that way and there is no real reason to maintain physical
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// and virtual as separate entities if no one else does. Only hard and off
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// do anything different.
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aWrapProp = eHTMLTextWrap_Soft; // the default
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nsAutoString wrap;
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if (aContent->IsNodeOfType(nsINode::eHTML)) {
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static nsIContent::AttrValuesArray strings[] =
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{&nsHTMLAtoms::HARD, &nsHTMLAtoms::OFF, nsnull};
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switch (aContent->FindAttrValueIn(kNameSpaceID_None, nsHTMLAtoms::wrap,
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strings, eIgnoreCase)) {
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case 0: aWrapProp = eHTMLTextWrap_Hard; break;
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case 1: aWrapProp = eHTMLTextWrap_Off; break;
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}
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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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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void
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nsFormControlHelper::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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nsPoint p[5];
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if (aHorz) {
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aEX++;
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p[0].x = nscoord(float(aSX)*aOnePixel);
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p[0].y = nscoord(float(aSY)*aOnePixel);
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p[1].x = nscoord(float(aEX)*aOnePixel);
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p[1].y = nscoord(float(aEY)*aOnePixel);
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p[2].x = nscoord(float(aEX)*aOnePixel);
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p[2].y = nscoord(float(aEY+1)*aOnePixel);
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p[3].x = nscoord(float(aSX)*aOnePixel);
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p[3].y = nscoord(float(aSY+1)*aOnePixel);
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p[4].x = nscoord(float(aSX)*aOnePixel);
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p[4].y = nscoord(float(aSY)*aOnePixel);
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} else {
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aEY++;
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p[0].x = nscoord(float(aSX)*aOnePixel);
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p[0].y = nscoord(float(aSY)*aOnePixel);
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p[1].x = nscoord(float(aEX)*aOnePixel);
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p[1].y = nscoord(float(aEY)*aOnePixel);
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p[2].x = nscoord(float(aEX+1)*aOnePixel);
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p[2].y = nscoord(float(aEY)*aOnePixel);
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p[3].x = nscoord(float(aSX+1)*aOnePixel);
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p[3].y = nscoord(float(aSY)*aOnePixel);
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p[4].x = nscoord(float(aSX)*aOnePixel);
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p[4].y = nscoord(float(aSY)*aOnePixel);
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}
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aRenderingContext.FillPolygon(p, 5);
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}
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//---------------------------------------------------------------------------
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void
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nsFormControlHelper::SetupPoints(PRUint32 aNumberOfPoints, nscoord* aPoints, nsPoint* aPolygon, nscoord aScaleFactor, nscoord aX, nscoord aY,
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nscoord aCenterX, nscoord aCenterY)
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{
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const nscoord offsetX = aCenterX * aScaleFactor;
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const nscoord offsetY = aCenterY * aScaleFactor;
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PRUint32 i = 0;
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PRUint32 count = 0;
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for (i = 0; i < aNumberOfPoints; i++) {
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aPolygon[i].x = (aPoints[count] * aScaleFactor) + aX - offsetX;
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count++;
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aPolygon[i].y = (aPoints[count] * aScaleFactor) + aY - offsetY;
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count++;
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}
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}
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void
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nsFormControlHelper::PaintFixedSizeCheckMark(nsIRenderingContext& aRenderingContext,
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float aPixelsToTwips)
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{
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// Offsets to x,y location, These offsets are used to place the checkmark in the middle
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// of it's 12X12 pixel box.
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const PRUint32 ox = 3;
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const PRUint32 oy = 3;
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nscoord onePixel = NSIntPixelsToTwips(1, aPixelsToTwips);
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// Draw checkmark using a series of rectangles. This builds an replica of the
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// way the checkmark looks under Windows. Using a polygon does not correctly
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// represent a checkmark under Windows. This is due to round-off error in the
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// Twips to Pixel conversions.
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PaintLine(aRenderingContext, 0 + ox, 2 + oy, 0 + ox, 4 + oy, PR_FALSE, 1, onePixel);
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PaintLine(aRenderingContext, 1 + ox, 3 + oy, 1 + ox, 5 + oy, PR_FALSE, 1, onePixel);
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PaintLine(aRenderingContext, 2 + ox, 4 + oy, 2 + ox, 6 + oy, PR_FALSE, 1, onePixel);
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PaintLine(aRenderingContext, 3 + ox, 3 + oy, 3 + ox, 5 + oy, PR_FALSE, 1, onePixel);
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PaintLine(aRenderingContext, 4 + ox, 2 + oy, 4 + ox, 4 + oy, PR_FALSE, 1, onePixel);
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PaintLine(aRenderingContext, 5 + ox, 1 + oy, 5 + ox, 3 + oy, PR_FALSE, 1, onePixel);
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PaintLine(aRenderingContext, 6 + ox, 0 + oy, 6 + ox, 2 + oy, PR_FALSE, 1, onePixel);
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}
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void
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nsFormControlHelper::PaintFixedSizeCheckMarkBorder(nsIRenderingContext& aRenderingContext,
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float aPixelsToTwips, const nsStyleColor& aBackgroundColor)
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{
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// Offsets to x,y location
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PRUint32 ox = 0;
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PRUint32 oy = 0;
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nscoord onePixel = NSIntPixelsToTwips(1, aPixelsToTwips);
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nscoord twelvePixels = NSIntPixelsToTwips(12, aPixelsToTwips);
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// Draw Background
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aRenderingContext.SetColor(aBackgroundColor.mColor);
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nsRect rect(0, 0, twelvePixels, twelvePixels);
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aRenderingContext.FillRect(rect);
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// Draw Border
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aRenderingContext.SetColor(NS_RGB(128, 128, 128));
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PaintLine(aRenderingContext, 0 + ox, 0 + oy, 11 + ox, 0 + oy, PR_TRUE, 1, onePixel);
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PaintLine(aRenderingContext, 0 + ox, 0 + oy, 0 + ox, 11 + oy, PR_FALSE, 1, onePixel);
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aRenderingContext.SetColor(NS_RGB(192, 192, 192));
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PaintLine(aRenderingContext, 1 + ox, 11 + oy, 11 + ox, 11 + oy, PR_TRUE, 1, onePixel);
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PaintLine(aRenderingContext, 11 + ox, 1 + oy, 11 + ox, 11 + oy, PR_FALSE, 1, onePixel);
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aRenderingContext.SetColor(NS_RGB(0, 0, 0));
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PaintLine(aRenderingContext, 1 + ox, 1 + oy, 10 + ox, 1 + oy, PR_TRUE, 1, onePixel);
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PaintLine(aRenderingContext, 1 + ox, 1 + oy, 1 + ox, 10 + oy, PR_FALSE, 1, onePixel);
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}
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//Draw a checkmark in any size.
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void
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nsFormControlHelper::PaintCheckMark(nsIRenderingContext& aRenderingContext,
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float aPixelsToTwips, const nsRect & aRect)
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{
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// Width and height of the fixed size checkmark in TWIPS.
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const PRInt32 fixedSizeCheckmarkWidth = 165;
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const PRInt32 fixedSizeCheckmarkHeight = 165;
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if ((fixedSizeCheckmarkWidth == aRect.width) &&
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(fixedSizeCheckmarkHeight == aRect.height)) {
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// Standard size, so draw a fixed size check mark instead of a scaled check mark.
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PaintFixedSizeCheckMark(aRenderingContext, aPixelsToTwips);
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return;
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}
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const PRUint32 checkpoints = 7;
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const PRUint32 checksize = 9; //This is value is determined by added 2 units to the end
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//of the 7X& pixel rectangle below to provide some white space
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//around the checkmark when it is rendered.
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// Points come from the coordinates on a 7X7 pixels
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// box with 0,0 at the lower left.
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nscoord checkedPolygonDef[] = {0,2, 2,4, 6,0 , 6,2, 2,6, 0,4, 0,2 };
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// Location of the center point of the checkmark
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const PRUint32 centerx = 3;
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const PRUint32 centery = 3;
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nsPoint checkedPolygon[checkpoints];
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PRUint32 defIndex = 0;
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PRUint32 polyIndex = 0;
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// Scale the checkmark based on the smallest dimension
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PRUint32 size = aRect.width / checksize;
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if (aRect.height < aRect.width) {
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size = aRect.height / checksize;
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}
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// Center and offset each point in the polygon definition.
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for (defIndex = 0; defIndex < (checkpoints * 2); defIndex++) {
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checkedPolygon[polyIndex].x = nscoord((((checkedPolygonDef[defIndex]) - centerx) * (size)) + (aRect.width / 2) + aRect.x);
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defIndex++;
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checkedPolygon[polyIndex].y = nscoord((((checkedPolygonDef[defIndex]) - centery) * (size)) + (aRect.height / 2) + aRect.y);
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polyIndex++;
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}
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aRenderingContext.FillPolygon(checkedPolygon, checkpoints);
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}
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//----------------------------------------------------------------------------------
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nsresult
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nsFormControlHelper::Reset(nsIFrame* aFrame, nsPresContext* aPresContext)
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{
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nsCOMPtr<nsIFormControl> control = do_QueryInterface(aFrame->GetContent());
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if (control) {
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control->Reset();
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return NS_OK;
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}
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return NS_ERROR_FAILURE;
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}
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void
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nsFormControlHelper::StyleChangeReflow(nsPresContext* aPresContext,
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nsIFrame* aFrame)
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{
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aPresContext->PresShell()->AppendReflowCommand(aFrame,
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eReflowType_StyleChanged,
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nsnull);
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}
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