зеркало из https://github.com/mozilla/gecko-dev.git
408 строки
13 KiB
C++
408 строки
13 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
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsCOMPtr.h"
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#include "nsTextControlFrame.h"
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#include "nsIContent.h"
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#include "prtypes.h"
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#include "nsIFrame.h"
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#include "nsISupports.h"
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#include "nsIAtom.h"
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#include "nsIPresContext.h"
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#include "nsIHTMLContent.h"
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#include "nsHTMLIIDs.h"
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#include "nsITextWidget.h"
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#include "nsWidgetsCID.h"
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#include "nsSize.h"
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#include "nsString.h"
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#include "nsLinebreakConverter.h"
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#include "nsHTMLAtoms.h"
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#include "nsIStyleContext.h"
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#include "nsFont.h"
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#include "nsDOMEvent.h"
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#include "nsIFormControl.h"
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#include "nsFormFrame.h"
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#include "nsIContent.h"
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#include "nsIDOMHTMLInputElement.h"
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#include "nsIDOMHTMLTextAreaElement.h"
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#include "nsCSSRendering.h"
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#include "nsIDeviceContext.h"
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#include "nsIFontMetrics.h"
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#include "nsILookAndFeel.h"
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#include "nsIComponentManager.h"
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#include "nsIStatefulFrame.h"
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#include "nsISupportsPrimitives.h"
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#include "nsIComponentManager.h"
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static NS_DEFINE_IID(kIFormControlIID, NS_IFORMCONTROL_IID);
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static NS_DEFINE_IID(kTextCID, NS_TEXTFIELD_CID);
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static NS_DEFINE_IID(kTextAreaCID, NS_TEXTAREA_CID);
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static NS_DEFINE_IID(kITextWidgetIID, NS_ITEXTWIDGET_IID);
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static NS_DEFINE_IID(kITextAreaWidgetIID, NS_ITEXTAREAWIDGET_IID);
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static NS_DEFINE_IID(kIDOMHTMLTextAreaElementIID, NS_IDOMHTMLTEXTAREAELEMENT_IID);
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static NS_DEFINE_IID(kIDOMHTMLInputElementIID, NS_IDOMHTMLINPUTELEMENT_IID);
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const nscoord kSuggestedNotSet = -1;
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nsTextControlFrame::nsTextControlFrame()
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{
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mSuggestedWidth = kSuggestedNotSet;
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mSuggestedHeight = kSuggestedNotSet;
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}
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nsTextControlFrame::~nsTextControlFrame()
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{
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}
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// Frames are not refcounted, no need to AddRef
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NS_IMETHODIMP
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nsTextControlFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
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{
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NS_PRECONDITION(0 != aInstancePtr, "null ptr");
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if (NULL == aInstancePtr) {
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return NS_ERROR_NULL_POINTER;
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} else if (aIID.Equals(NS_GET_IID(nsIStatefulFrame))) {
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*aInstancePtr = (void*)(nsIStatefulFrame*) this;
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return NS_OK;
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}
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return nsFormControlFrame::QueryInterface(aIID, aInstancePtr);
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}
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nscoord
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nsTextControlFrame::GetVerticalBorderWidth(float aPixToTwip) const
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{
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return NSIntPixelsToTwips(4, aPixToTwip);
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}
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nscoord
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nsTextControlFrame::GetHorizontalBorderWidth(float aPixToTwip) const
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{
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return GetVerticalBorderWidth(aPixToTwip);
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}
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// for a text area aInnerHeight is the height of one line
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nscoord
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nsTextControlFrame::GetVerticalInsidePadding(nsIPresContext* aPresContext,
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float aPixToTwip,
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nscoord aInnerHeight) const
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{
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// XXX NOTE: the enums eMetric_TextShouldUseVerticalInsidePadding and eMetric_TextVerticalInsidePadding
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// are ONLY needed because GTK is not using the "float" padding values and wants to only use an
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// integer value for the padding instead of calculating like the other platforms.
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//
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// If GTK decides to start calculating the value, PLEASE remove these two enum from nsILookAndFeel and
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// all the platforms nsLookAndFeel impementations so we don't have these extra values remaining in the code.
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// The two enums are:
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// eMetric_TextVerticalInsidePadding
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// eMetric_TextShouldUseVerticalInsidePadding
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//
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float padTextArea;
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float padTextField;
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PRInt32 vertPad;
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PRInt32 shouldUseVertPad;
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nsCOMPtr<nsILookAndFeel> lookAndFeel;
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if (NS_SUCCEEDED(aPresContext->GetLookAndFeel(getter_AddRefs(lookAndFeel)))) {
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lookAndFeel->GetMetric(nsILookAndFeel::eMetricFloat_TextAreaVerticalInsidePadding, padTextArea);
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lookAndFeel->GetMetric(nsILookAndFeel::eMetricFloat_TextFieldVerticalInsidePadding, padTextField);
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// These two (below) are really only needed for GTK
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lookAndFeel->GetMetric(nsILookAndFeel::eMetric_TextVerticalInsidePadding, vertPad);
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lookAndFeel->GetMetric(nsILookAndFeel::eMetric_TextShouldUseVerticalInsidePadding, shouldUseVertPad);
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}
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if (1 == shouldUseVertPad) {
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return NSIntPixelsToTwips(vertPad, aPixToTwip); // XXX this is probably wrong (for GTK)
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} else {
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PRInt32 type;
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GetType(&type);
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if (NS_FORM_TEXTAREA == type) {
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return (nscoord)NSToIntRound(float(aInnerHeight) * padTextArea);
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} else {
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return (nscoord)NSToIntRound(float(aInnerHeight) * padTextField);
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}
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}
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}
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//static float pad = 0.95F;
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nscoord
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nsTextControlFrame::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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{
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// XXX NOTE: the enum eMetric_TextShouldUseHorizontalInsideMinimumPadding
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// is ONLY needed because GTK is not using the "float" padding values and wants to only use the
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// "minimum" integer value for the padding instead of calculating and comparing like the other platforms.
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//
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// If GTK decides to start calculating and comparing the values,
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// PLEASE remove these the enum from nsILookAndFeel and
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// all the platforms nsLookAndFeel impementations so we don't have these extra values remaining in the code.
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// The enum is:
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// eMetric_TextShouldUseHorizontalInsideMinimumPadding
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//
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float padTextField;
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float padTextArea;
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PRInt32 padMinText;
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PRInt32 shouldUsePadMinText;
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nsCOMPtr<nsILookAndFeel> lookAndFeel;
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if (NS_SUCCEEDED(aPresContext->GetLookAndFeel(getter_AddRefs(lookAndFeel)))) {
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lookAndFeel->GetMetric(nsILookAndFeel::eMetricFloat_TextFieldHorizontalInsidePadding, padTextField);
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lookAndFeel->GetMetric(nsILookAndFeel::eMetricFloat_TextAreaHorizontalInsidePadding, padTextArea);
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lookAndFeel->GetMetric(nsILookAndFeel::eMetric_TextHorizontalInsideMinimumPadding, padMinText);
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// This one (below) is really only needed for GTK
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lookAndFeel->GetMetric(nsILookAndFeel::eMetric_TextShouldUseHorizontalInsideMinimumPadding, shouldUsePadMinText);
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}
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//padTextField = pad;
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nscoord padding;
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PRInt32 type;
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GetType(&type);
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if (NS_FORM_TEXTAREA == type) {
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padding = (nscoord)(aCharWidth * padTextArea);
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} else {
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padding = (nscoord)(aCharWidth * padTextField);
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}
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nscoord min = NSIntPixelsToTwips(padMinText, aPixToTwip);
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if (padding > min && (1 == shouldUsePadMinText)) {
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return padding;
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} else {
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return min;
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}
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}
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/*
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* FIXME: this ::GetIID() method has no meaning in life and should be
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* removed.
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* Pierre Phaneuf <pp@ludusdesign.com>
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*/
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const nsIID&
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nsTextControlFrame::GetIID()
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{
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PRInt32 type;
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GetType(&type);
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if (NS_FORM_TEXTAREA == type) {
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return kITextAreaWidgetIID;
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} else {
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return kITextWidgetIID;
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}
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}
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const nsIID&
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nsTextControlFrame::GetCID()
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{
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PRInt32 type;
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GetType(&type);
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if (NS_FORM_TEXTAREA == type) {
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return kTextAreaCID;
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} else {
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return kTextCID;
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}
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}
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void
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nsTextControlFrame::GetDesiredSize(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsHTMLReflowMetrics& aDesiredLayoutSize)
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{
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nsSize widgetSize;
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GetDesiredSize(aPresContext, aReflowState, aDesiredLayoutSize, widgetSize);
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}
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void
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nsTextControlFrame::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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{
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nsCompatibility mode;
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aPresContext->GetCompatibilityMode(&mode);
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// get the css size and let the frame use or override it
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nsSize styleSize;
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GetStyleSize(aPresContext, aReflowState, styleSize);
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nsSize desiredSize;
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nsSize minSize;
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PRBool widthExplicit, heightExplicit;
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PRInt32 ignore;
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PRInt32 type;
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GetType(&type);
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if ((NS_FORM_INPUT_TEXT == type) || (NS_FORM_INPUT_PASSWORD == type)) {
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PRInt32 width;
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if (NS_CONTENT_ATTR_HAS_VALUE != GetSizeFromContent(&width)) {
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width = GetDefaultColumnWidth();
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}
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//if (eCompatibility_NavQuirks == mode) {
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// width += 1;
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//}
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nsInputDimensionSpec textSpec(nsnull, PR_FALSE, nsnull,
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nsnull, width, PR_FALSE, nsnull, 1);
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nsFormControlHelper::CalculateSize(aPresContext, aReflowState.rendContext, this, styleSize,
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textSpec, desiredSize, minSize, widthExplicit, heightExplicit, ignore);
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} else {
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nsInputDimensionSpec areaSpec(nsHTMLAtoms::cols, PR_FALSE, nsnull, nsnull, GetDefaultColumnWidth(),
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PR_FALSE, nsHTMLAtoms::rows, 1);
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nsFormControlHelper::CalculateSize(aPresContext, aReflowState.rendContext, this, styleSize,
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areaSpec, desiredSize, minSize, widthExplicit, heightExplicit, ignore);
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}
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// CalculateSize makes calls in the nsFormControlHelper that figures
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// out the entire size of the control when in NavQuirks mode. For the
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// textarea, this means the scrollbar sizes hav already been added to
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// its overall size and do not need to be added here.
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float p2t;
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aPresContext->GetPixelsToTwips(&p2t);
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if (NS_FORM_TEXTAREA == type && mode == eCompatibility_Standard) {
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nscoord scrollbarWidth = 0;
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nscoord scrollbarHeight = 0;
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float scale;
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nsCOMPtr<nsIDeviceContext> dx;
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aPresContext->GetDeviceContext(getter_AddRefs(dx));
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if (dx) {
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float sbWidth;
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float sbHeight;
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dx->GetCanonicalPixelScale(scale);
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dx->GetScrollBarDimensions(sbWidth, sbHeight);
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scrollbarWidth = PRInt32(sbWidth * scale);
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scrollbarHeight = PRInt32(sbHeight * scale);
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} else {
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scrollbarWidth = GetScrollbarWidth(p2t);
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scrollbarHeight = scrollbarWidth;
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}
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if (!heightExplicit) {
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desiredSize.height += scrollbarHeight;
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minSize.height += scrollbarHeight;
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}
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if (!widthExplicit) {
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desiredSize.width += scrollbarWidth;
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minSize.width += scrollbarWidth;
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}
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}
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aDesiredLayoutSize.width = desiredSize.width;
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aDesiredLayoutSize.height = desiredSize.height;
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aDesiredLayoutSize.ascent = aDesiredLayoutSize.height;
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aDesiredLayoutSize.descent = 0;
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if (aDesiredLayoutSize.maxElementSize) {
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aDesiredLayoutSize.maxElementSize->width = minSize.width;
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aDesiredLayoutSize.maxElementSize->height = minSize.height;
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}
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aDesiredWidgetSize.width = aDesiredLayoutSize.width;
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aDesiredWidgetSize.height = aDesiredLayoutSize.height;
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}
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PRInt32
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nsTextControlFrame::GetMaxNumValues()
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{
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return 1;
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}
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NS_IMETHODIMP
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nsTextControlFrame::GetCursor(nsIPresContext* aPresContext, nsPoint& aPoint, PRInt32& aCursor)
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{
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/*const nsStyleColor* styleColor;
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GetStyleData(eStyleStruct_Color, (const nsStyleStruct*&)styleColor);
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aCursor = styleColor->mCursor;*/
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//XXX This is wrong, should be through style.
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aCursor = NS_STYLE_CURSOR_TEXT;
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return NS_OK;
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}
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#ifdef DEBUG
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NS_IMETHODIMP
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nsTextControlFrame::GetFrameName(nsString& aResult) const
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{
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return MakeFrameName("TextControl", aResult);
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}
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#endif
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//---------------------------------------------------------
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NS_IMETHODIMP
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nsTextControlFrame::SetSuggestedSize(nscoord aWidth, nscoord aHeight)
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{
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mSuggestedWidth = aWidth;
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mSuggestedHeight = aHeight;
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return NS_OK;
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}
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//----------------------------------------------------------------------
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// nsIStatefulFrame
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//----------------------------------------------------------------------
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NS_IMETHODIMP
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nsTextControlFrame::GetStateType(nsIPresContext* aPresContext, nsIStatefulFrame::StateType* aStateType)
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{
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*aStateType = nsIStatefulFrame::eTextType;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsTextControlFrame::SaveState(nsIPresContext* aPresContext, nsIPresState** aState)
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{
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// Construct a pres state.
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NS_NewPresState(aState); // The addref happens here.
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nsAutoString theString;
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nsresult res = GetProperty(nsHTMLAtoms::value, theString);
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if (NS_SUCCEEDED(res)) {
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char* chars = theString.ToNewCString();
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if (chars) {
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// GetProperty returns platform-native line breaks. We must convert
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// these to content line breaks.
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char* newChars = nsLinebreakConverter::ConvertLineBreaks(chars,
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nsLinebreakConverter::eLinebreakPlatform, nsLinebreakConverter::eLinebreakContent);
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if (newChars) {
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nsCRT::free(chars);
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chars = newChars;
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}
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(*aState)->SetStateProperty("value", nsAutoString(chars));
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nsCRT::free(chars);
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} else {
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res = NS_ERROR_OUT_OF_MEMORY;
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}
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}
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(*aState)->SetStateProperty("value", theString);
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return res;
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}
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NS_IMETHODIMP
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nsTextControlFrame::RestoreState(nsIPresContext* aPresContext, nsIPresState* aState)
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{
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nsAutoString stateString;
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aState->GetStateProperty("value", stateString);
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nsresult res = SetProperty(aPresContext, nsHTMLAtoms::value, stateString);
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return res;
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}
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