159 lines
5.0 KiB
C++
159 lines
5.0 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 License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "nsNativeCheckboxControlFram.h"
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#include "nsICheckButton.h"
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#include "nsHTMLAtoms.h"
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#include "nsHTMLParts.h"
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#include "nsFormFrame.h"
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#include "nsIFormControl.h"
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#include "nsIContent.h"
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#include "nsILookAndFeel.h"
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#include "nsWidgetsCID.h"
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#include "nsIComponentManager.h"
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#define NS_DEFAULT_CHECKBOX_SIZE 12
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static NS_DEFINE_IID(kICheckButtonIID, NS_ICHECKBUTTON_IID);
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static NS_DEFINE_IID(kLookAndFeelCID, NS_LOOKANDFEEL_CID);
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static NS_DEFINE_IID(kILookAndFeelIID, NS_ILOOKANDFEEL_IID);
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nsresult
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NS_NewNativeCheckboxControlFrame(nsIFrame** aNewFrame)
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{
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NS_PRECONDITION(aNewFrame, "null OUT ptr");
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if (nsnull == aNewFrame) {
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return NS_ERROR_NULL_POINTER;
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}
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nsNativeCheckboxControlFrame* it = new nsNativeCheckboxControlFrame;
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if (!it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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*aNewFrame = it;
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return NS_OK;
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}
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nscoord
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nsNativeCheckboxControlFrame::GetCheckboxSize(float aPixToTwip) const
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{
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nsILookAndFeel * lookAndFeel;
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PRInt32 checkboxSize = 0;
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if (NS_OK == nsComponentManager::CreateInstance(kLookAndFeelCID, nsnull, kILookAndFeelIID, (void**)&lookAndFeel)) {
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lookAndFeel->GetMetric(nsILookAndFeel::eMetric_CheckboxSize, checkboxSize);
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NS_RELEASE(lookAndFeel);
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}
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if (checkboxSize == 0)
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checkboxSize = NS_DEFAULT_CHECKBOX_SIZE;
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return NSIntPixelsToTwips(checkboxSize, aPixToTwip);
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}
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void
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nsNativeCheckboxControlFrame::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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float p2t;
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aPresContext->GetScaledPixelsToTwips(&p2t);
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aDesiredWidgetSize.width = GetCheckboxSize(p2t);
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aDesiredWidgetSize.height = aDesiredWidgetSize.width;
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aDesiredLayoutSize.width = aDesiredWidgetSize.width;
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aDesiredLayoutSize.height = aDesiredWidgetSize.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 = aDesiredLayoutSize.width;
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aDesiredLayoutSize.maxElementSize->height = aDesiredLayoutSize.height;
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}
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}
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void
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nsNativeCheckboxControlFrame::PostCreateWidget(nsIPresContext* aPresContext, nscoord& aWidth, nscoord& aHeight)
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{
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Inherited::PostCreateWidget(aPresContext, aWidth, aHeight);
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if (mWidget != nsnull) {
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SetColors(*aPresContext);
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mWidget->Enable(!nsFormFrame::GetDisabled(this));
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}
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}
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NS_IMETHODIMP
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nsNativeCheckboxControlFrame::AttributeChanged(nsIPresContext* aPresContext,
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nsIContent* aChild,
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nsIAtom* aAttribute,
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PRInt32 aHint)
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{
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nsresult result = NS_OK;
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if (mWidget) {
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if (nsHTMLAtoms::checked == aAttribute) {
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nsICheckButton* button = nsnull;
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result = mWidget->QueryInterface(GetIID(), (void**)&button);
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if ((NS_SUCCEEDED(result)) && (nsnull != button)) {
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PRBool checkedAttr;
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GetCurrentCheckState(&checkedAttr);
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PRBool checkedPrevState;
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button->GetState(checkedPrevState);
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if (checkedAttr != checkedPrevState) {
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button->SetState(checkedAttr);
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}
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NS_RELEASE(button);
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}
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}
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// Allow the base class to handle common attributes supported
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// by all form elements...
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else {
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result = Inherited::AttributeChanged(aPresContext, aChild, aAttribute, aHint);
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}
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}
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return result;
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}
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nsCheckboxControlFrame::CheckState
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nsNativeCheckboxControlFrame::GetCheckboxState()
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{
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PRBool state = PR_FALSE;
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nsICheckButton* checkBox = nsnull;
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if (nsnull != mWidget) {
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// native-widget
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if (NS_SUCCEEDED(mWidget->QueryInterface(kICheckButtonIID,(void**)&checkBox))) {
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checkBox->GetState(state);
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NS_RELEASE(checkBox);
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}
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}
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return state ? eOn : eOff;
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}
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void nsNativeCheckboxControlFrame::SetCheckboxState(CheckState aValue)
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{
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if (nsnull != mWidget) {
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nsICheckButton* checkBox = nsnull;
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if (NS_OK == mWidget->QueryInterface(kICheckButtonIID,(void**)&checkBox)) {
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checkBox->SetState(aValue == eOn);
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NS_RELEASE(checkBox);
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}
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}
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}
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