pjs/layout/forms/nsGfxButtonControlFrame.cpp

411 строки
13 KiB
C++
Исходник Обычный вид История

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/* -*- 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 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
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*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
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*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
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*/
#include "nsGfxButtonControlFrame.h"
#include "nsIButton.h"
#include "nsWidgetsCID.h"
#include "nsIFontMetrics.h"
#include "nsFormControlFrame.h"
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static NS_DEFINE_IID(kIFormControlIID, NS_IFORMCONTROL_IID);
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static NS_DEFINE_IID(kIButtonIID, NS_IBUTTON_IID);
const nscoord kSuggestedNotSet = -1;
nsGfxButtonControlFrame::nsGfxButtonControlFrame()
{
mRenderer.SetNameSpace(kNameSpaceID_None);
mSuggestedWidth = kSuggestedNotSet;
mSuggestedHeight = kSuggestedNotSet;
}
PRBool
nsGfxButtonControlFrame::IsSuccessful(nsIFormControlFrame* aSubmitter)
{
PRInt32 type;
GetType(&type);
if ((NS_FORM_INPUT_HIDDEN == type) || (this == aSubmitter)) {
// Can not use the nsHTMLButtonControlFrame::IsSuccessful because
// it will fail it's test of (this==aSubmitter)
nsAutoString name;
return (NS_CONTENT_ATTR_HAS_VALUE == GetName(&name));
} else {
return PR_FALSE;
}
}
PRInt32
nsGfxButtonControlFrame::GetMaxNumValues()
{
PRInt32 type;
GetType(&type);
if ((NS_FORM_INPUT_SUBMIT == type) || (NS_FORM_INPUT_HIDDEN == type)) {
return 1;
} else {
return 0;
}
}
PRBool
nsGfxButtonControlFrame::GetNamesValues(PRInt32 aMaxNumValues, PRInt32& aNumValues,
nsString* aValues, nsString* aNames)
{
nsAutoString name;
nsresult result = GetName(&name);
if ((aMaxNumValues <= 0) || (NS_CONTENT_ATTR_HAS_VALUE != result)) {
return PR_FALSE;
}
PRInt32 type;
GetType(&type);
if (NS_FORM_INPUT_RESET == type) {
aNumValues = 0;
return PR_FALSE;
} else {
nsAutoString value;
GetValue(&value);
aValues[0] = value;
aNames[0] = name;
aNumValues = 1;
return PR_TRUE;
}
}
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nsresult
NS_NewGfxButtonControlFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
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{
NS_PRECONDITION(aNewFrame, "null OUT ptr");
if (nsnull == aNewFrame) {
return NS_ERROR_NULL_POINTER;
}
nsGfxButtonControlFrame* it = new (aPresShell) nsGfxButtonControlFrame;
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if (!it) {
return NS_ERROR_OUT_OF_MEMORY;
}
*aNewFrame = it;
return NS_OK;
}
PRBool
nsGfxButtonControlFrame::IsReset(PRInt32 type)
{
if (NS_FORM_INPUT_RESET == type) {
return PR_TRUE;
} else {
return PR_FALSE;
}
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}
PRBool
nsGfxButtonControlFrame::IsSubmit(PRInt32 type)
{
if (NS_FORM_INPUT_SUBMIT == type) {
return PR_TRUE;
} else {
return PR_FALSE;
}
}
const nsIID&
nsGfxButtonControlFrame::GetIID()
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{
static NS_DEFINE_IID(kButtonIID, NS_IBUTTON_IID);
return kButtonIID;
}
const nsIID&
nsGfxButtonControlFrame::GetCID()
{
static NS_DEFINE_IID(kButtonCID, NS_BUTTON_CID);
return kButtonCID;
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}
#ifdef DEBUG
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NS_IMETHODIMP
nsGfxButtonControlFrame::GetFrameName(nsString& aResult) const
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{
return MakeFrameName("ButtonControl", aResult);
}
#endif
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NS_IMETHODIMP
nsGfxButtonControlFrame::AddComputedBorderPaddingToDesiredSize(nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aSuggestedReflowState)
{
if (kSuggestedNotSet == mSuggestedWidth) {
aDesiredSize.width += aSuggestedReflowState.mComputedBorderPadding.left + aSuggestedReflowState.mComputedBorderPadding.right;
}
if (kSuggestedNotSet == mSuggestedHeight) {
aDesiredSize.height += aSuggestedReflowState.mComputedBorderPadding.top + aSuggestedReflowState.mComputedBorderPadding.bottom;
}
return NS_OK;
}
NS_IMETHODIMP
nsGfxButtonControlFrame::DoNavQuirksReflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
nsIFrame* firstKid = mFrames.FirstChild();
nsCOMPtr<nsIFontMetrics> fontMet;
nsFormControlHelper::GetFrameFontFM(aPresContext, (nsIFormControlFrame *)this, getter_AddRefs(fontMet));
nsSize desiredSize;
if (fontMet) {
aReflowState.rendContext->SetFont(fontMet);
// Get the text from the "value" attribute
// for measuring the height, width of the text
// if there is no value attr or its length is 0
// then go to the generated content to get it
nsAutoString value;
GetValue(&value);
// if there was no value specified
// then go get the content of the generated content
// we can't make any assumption as to what the default would be
// because of the value is specified in the html.css and for
// for non-english platforms it might not be the string
// "Reset" or "Submit Query"
if (value.Length() == 0) {
value = " ";
// The child frame will br the generated content
nsIFrame* fKid;
firstKid->FirstChild(nsnull, &fKid);
if (fKid) {
const nsStyleContent* content;
fKid->GetStyleData(eStyleStruct_Content, (const nsStyleStruct *&)content);
PRUint32 count = content->ContentCount();
// XXX not sure if I need to get more than the first index?
if (count > 0) {
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nsStyleContentType contentType = eStyleContentType_String;
content->GetContentAt(0, contentType, value);
}
}
}
const nsStyleText* textStyle;
GetStyleData(eStyleStruct_Text, (const nsStyleStruct *&)textStyle);
if (!textStyle->WhiteSpaceIsSignificant()) {
value.CompressWhitespace();
if (value.Length() == 0) {
value = " ";
}
}
nsInputDimensionSpec btnSpec(NULL, PR_FALSE, nsnull,
&value,0,
PR_FALSE, NULL, 1);
nsFormControlHelper::CalcNavQuirkSizing(aPresContext, aReflowState.rendContext,
fontMet, (nsIFormControlFrame*)this,
btnSpec, desiredSize);
// This calculates the reflow size
// get the css size and let the frame use or override it
nsSize styleSize;
nsFormControlFrame::GetStyleSize(aPresContext, aReflowState, styleSize);
if (CSS_NOTSET != styleSize.width) { // css provides width
NS_ASSERTION(styleSize.width >= 0, "form control's computed width is < 0");
if (NS_INTRINSICSIZE != styleSize.width) {
desiredSize.width = styleSize.width;
desiredSize.width += aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom;
}
}
if (CSS_NOTSET != styleSize.height) { // css provides height
NS_ASSERTION(styleSize.height > 0, "form control's computed height is <= 0");
if (NS_INTRINSICSIZE != styleSize.height) {
desiredSize.height = styleSize.height;
desiredSize.height += aReflowState.mComputedBorderPadding.left + aReflowState.mComputedBorderPadding.right;
}
}
aDesiredSize.width = desiredSize.width;
aDesiredSize.height = desiredSize.height;
aDesiredSize.ascent = aDesiredSize.height;
aDesiredSize.descent = 0;
} else {
// XXX ASSERT HERE
desiredSize.width = 0;
desiredSize.height = 0;
}
// get border and padding
/*const nsStyleSpacing* spacing;
GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct *&)spacing);
nsMargin borderPadding;
borderPadding.SizeTo(0, 0, 0, 0);
spacing->CalcBorderPaddingFor(this, borderPadding);
*/
// remove it from the the desired size
// because the content need to fit inside of it
desiredSize.width -= (aReflowState.mComputedBorderPadding.left + aReflowState.mComputedBorderPadding.right);
desiredSize.height -= (aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom);
// now reflow the first child (genertaed content)
nsHTMLReflowState reflowState(aPresContext, aReflowState, firstKid, desiredSize);
reflowState.mComputedWidth = desiredSize.width;
reflowState.mComputedHeight = desiredSize.height;
// XXX Proper handling of incremental reflow...
if (eReflowReason_Incremental == aReflowState.reason) {
nsIFrame* targetFrame;
// See if it's targeted at us
aReflowState.reflowCommand->GetTarget(targetFrame);
if (this == targetFrame) {
Invalidate(aPresContext, nsRect(0,0,mRect.width,mRect.height), PR_FALSE);
nsIReflowCommand::ReflowType reflowType;
aReflowState.reflowCommand->GetType(reflowType);
if (nsIReflowCommand::StyleChanged == reflowType) {
reflowState.reason = eReflowReason_StyleChange;
}
else {
reflowState.reason = eReflowReason_Resize;
}
} else {
nsIFrame* nextFrame;
// Remove the next frame from the reflow path
aReflowState.reflowCommand->GetNext(nextFrame);
}
}
nsHTMLReflowMetrics childReflowMetrics(aDesiredSize);
nsRect kidRect;
firstKid->GetRect(kidRect);
ReflowChild(firstKid, aPresContext, childReflowMetrics, reflowState, kidRect.x, kidRect.y, 0, aStatus);
// Now do the reverse calculation of the
// NavQuirks button to get the size of the text
nscoord textWidth = (2 * aDesiredSize.width) / 3;
nscoord textHeight = (2 * aDesiredSize.height) / 3;
// Center the child and add back in the border and badding
nsRect rect = nsRect(((desiredSize.width - textWidth)/2)+ aReflowState.mComputedBorderPadding.left,
((desiredSize.height - textHeight)/2) + aReflowState.mComputedBorderPadding.top,
desiredSize.width,
desiredSize.height);
firstKid->SetRect(aPresContext, rect);
return NS_OK;
}
NS_IMETHODIMP
nsGfxButtonControlFrame::Reflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
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{
// The mFormFrame is set in the initial reflow within nsHTMLButtonControlFrame
nsresult rv = NS_OK;
if (!mFormFrame && (eReflowReason_Initial == aReflowState.reason)) {
nsFormFrame::AddFormControlFrame(aPresContext, *NS_STATIC_CAST(nsIFrame*, this));
}
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#if 1
nsresult skiprv = nsFormControlFrame::SkipResizeReflow(mCacheSize, mCachedMaxElementSize, aPresContext,
aDesiredSize, aReflowState, aStatus);
if (NS_SUCCEEDED(skiprv)) {
return skiprv;
}
#endif
if ((kSuggestedNotSet != mSuggestedWidth) ||
(kSuggestedNotSet != mSuggestedHeight)) {
nsHTMLReflowState suggestedReflowState(aReflowState);
// Honor the suggested width and/or height.
if (kSuggestedNotSet != mSuggestedWidth) {
suggestedReflowState.mComputedWidth = mSuggestedWidth;
}
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if (kSuggestedNotSet != mSuggestedHeight) {
suggestedReflowState.mComputedHeight = mSuggestedHeight;
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}
rv = nsHTMLButtonControlFrame::Reflow(aPresContext, aDesiredSize, suggestedReflowState, aStatus);
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} else { // Normal reflow.
nsCompatibility mode;
aPresContext->GetCompatibilityMode(&mode);
if (mode == eCompatibility_NavQuirks) {
// Do NavQuirks Sizing and layout
rv = DoNavQuirksReflow(aPresContext, aDesiredSize, aReflowState, aStatus);
} else {
// Do Standard mode sizing and layout
rv = nsHTMLButtonControlFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
}
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}
#ifdef DEBUG_rodsXXXX
COMPARE_QUIRK_SIZE("nsGfxButtonControlFrame", 84, 24) // with the text "Press Me" in it
#endif
aStatus = NS_FRAME_COMPLETE;
nsFormControlFrame::SetupCachedSizes(mCacheSize, mCachedMaxElementSize, aDesiredSize);
return rv;
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}
NS_IMETHODIMP
nsGfxButtonControlFrame::SetSuggestedSize(nscoord aWidth, nscoord aHeight)
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{
mSuggestedWidth = aWidth;
mSuggestedHeight = aHeight;
return NS_OK;
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}
NS_IMETHODIMP
nsGfxButtonControlFrame::HandleEvent(nsIPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus)
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{
// Override the HandleEvent to prevent the nsFrame::HandleEvent
// from being called. The nsFrame::HandleEvent causes the button label
// to be selected (Drawn with an XOR rectangle over the label)
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// if disabled do nothing
if (mRenderer.isDisabled()) {
return NS_OK;
}
// lets see if the button was clicked
switch (aEvent->message) {
case NS_MOUSE_LEFT_CLICK:
MouseClicked(aPresContext);
break;
}
return NS_OK;
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}