4f4f08da7c
No longer need special offset's during printing. nsFormControlFrame now detects when to gfx render the widgets. git-svn-id: svn://10.0.0.236/trunk@16153 18797224-902f-48f8-a5cc-f745e15eee43
453 lines
15 KiB
C++
453 lines
15 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 "nsICheckButton.h"
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#include "nsFormControlFrame.h"
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#include "nsFormFrame.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 "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 "nsWidgetsCID.h"
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#include "nsIView.h"
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#include "nsHTMLAtoms.h"
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#include "nsIStyleContext.h"
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#include "nsStyleUtil.h"
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#include "nsIFormControl.h"
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#include "nsIDOMHTMLInputElement.h"
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#ifdef XP_PC
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#define NS_PC_DESIRED_CHECKBOX_SIZE 20
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#define NS_PC_ABSOLUTE_CHECKBOX_SIZE 12
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#endif
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static NS_DEFINE_IID(kICheckButtonIID, NS_ICHECKBUTTON_IID);
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static NS_DEFINE_IID(kIDOMHTMLInputElementIID, NS_IDOMHTMLINPUTELEMENT_IID);
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class nsCheckboxControlFrame : public nsFormControlFrame {
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public:
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virtual void PostCreateWidget(nsIPresContext* aPresContext,
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nscoord& aWidth,
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nscoord& aHeight);
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NS_IMETHOD 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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NS_IMETHOD GetFrameName(nsString& aResult) const {
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return MakeFrameName("CheckboxControl", aResult);
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}
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virtual const nsIID& GetCID();
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virtual const nsIID& GetIID();
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virtual void MouseClicked(nsIPresContext* aPresContext);
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virtual PRInt32 GetMaxNumValues();
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virtual PRBool GetNamesValues(PRInt32 aMaxNumValues, PRInt32& aNumValues,
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nsString* aValues, nsString* aNames);
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virtual void Reset();
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NS_IMETHOD GetChecked(PRBool* aResult);
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//
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// XXX: The following methods are TEMPORARY. They are being used to get printing working
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// under windows. Later it may be used to GFX-render the controls to the display.
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// Expect this code to repackaged and moved to a new location in the future.
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virtual void GetCurrentCheckState(PRBool* aState);
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virtual void PaintFixedSizeCheckMark(nsIRenderingContext& aRenderingContext,
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float aPixelsToTwips);
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virtual void PaintCheckBox(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect);
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virtual void PaintFixedSizeCheckMarkBorder(nsIRenderingContext& aRenderingContext,
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float aPixelsToTwips);
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NS_IMETHOD Paint(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect);
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//XXX: End of the temporary methods
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protected:
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virtual void 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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nsresult
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NS_NewCheckboxControlFrame(nsIFrame*& aResult)
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{
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aResult = new nsCheckboxControlFrame;
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if (nsnull == aResult) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return NS_OK;
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}
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const nsIID&
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nsCheckboxControlFrame::GetIID()
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{
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static NS_DEFINE_IID(kCheckboxIID, NS_ICHECKBUTTON_IID);
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return kCheckboxIID;
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}
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const nsIID&
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nsCheckboxControlFrame::GetCID()
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{
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static NS_DEFINE_IID(kCheckboxCID, NS_CHECKBUTTON_CID);
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return kCheckboxCID;
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}
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void
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nsCheckboxControlFrame::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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#ifdef XP_PC
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aDesiredWidgetSize.width = NSIntPixelsToTwips(NS_PC_DESIRED_CHECKBOX_SIZE, p2t);
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aDesiredWidgetSize.height = NSIntPixelsToTwips(NS_PC_DESIRED_CHECKBOX_SIZE, p2t);
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#endif
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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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}
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NS_IMETHODIMP
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nsCheckboxControlFrame::GetChecked(PRBool* aResult)
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{
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nsresult result = NS_FORM_NOTOK;
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*aResult = PR_FALSE;
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if (mContent) {
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nsIHTMLContent* iContent = nsnull;
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result = mContent->QueryInterface(kIHTMLContentIID, (void**)&iContent);
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if ((NS_OK == result) && iContent) {
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nsHTMLValue value;
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result = iContent->GetAttribute(nsHTMLAtoms::checked, value);
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if (NS_CONTENT_ATTR_HAS_VALUE == result) {
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*aResult = PR_TRUE;
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}
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NS_RELEASE(iContent);
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}
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}
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return result;
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}
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void
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nsCheckboxControlFrame::PostCreateWidget(nsIPresContext* aPresContext, nscoord& aWidth, nscoord& aHeight)
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{
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if (!mWidget) {
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return;
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}
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SetColors(*aPresContext);
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mWidget->Enable(!nsFormFrame::GetDisabled(this));
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// set the widget to the initial state
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nsICheckButton* checkbox = nsnull;
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if (NS_OK == mWidget->QueryInterface(GetIID(),(void**)&checkbox)) {
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PRBool checked;
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nsresult result = GetChecked(&checked);
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if (NS_CONTENT_ATTR_HAS_VALUE == result) {
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checkbox->SetState(checked);
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}
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NS_RELEASE(checkbox);
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}
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}
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NS_IMETHODIMP
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nsCheckboxControlFrame::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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GetChecked(&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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}
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return result;
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}
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void nsCheckboxControlFrame::GetCurrentCheckState(PRBool *aState)
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{
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nsIDOMHTMLInputElement* inputElement;
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if (NS_OK == mContent->QueryInterface(kIDOMHTMLInputElementIID, (void**)&inputElement)) {
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inputElement->GetChecked(aState);
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NS_RELEASE(inputElement);
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}
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}
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//XXX: This may be needed later when we actually need the correct state for the checkbox
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//void nsCheckboxControlFrame::SetCurrentCheckState(PRBool aState)
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//{
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// nsIDOMHTMLInputElement* inputElement;
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// if (NS_OK == mContent->QueryInterface(kIDOMHTMLInputElementIID, (void**)&inputElement)) {
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// inputElement->SetDefaultChecked(aState); //XXX: TEMPORARY this should be GetChecked but it get's it's state from the widget instead
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// NS_RELEASE(inputElement);
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// }
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//}
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void
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nsCheckboxControlFrame::MouseClicked(nsIPresContext* aPresContext)
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{
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nsICheckButton* checkbox = nsnull;
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if (mWidget && (NS_OK == mWidget->QueryInterface(GetIID(),(void**)&checkbox))) {
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PRBool oldState;
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checkbox->GetState(oldState);
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PRBool newState = oldState ? PR_FALSE : PR_TRUE;
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checkbox->SetState(newState);
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// SetCurrentCheckState(newState); // Let content model know about the change
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NS_IF_RELEASE(checkbox);
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}
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}
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PRInt32
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nsCheckboxControlFrame::GetMaxNumValues()
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{
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return 1;
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}
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PRBool
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nsCheckboxControlFrame::GetNamesValues(PRInt32 aMaxNumValues, PRInt32& aNumValues,
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nsString* aValues, nsString* aNames)
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{
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nsAutoString name;
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nsresult nameResult = GetName(&name);
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if ((aMaxNumValues <= 0) || (NS_CONTENT_ATTR_HAS_VALUE != nameResult)) {
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return PR_FALSE;
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}
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PRBool result = PR_TRUE;
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nsAutoString value;
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nsresult valueResult = GetValue(&value);
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nsICheckButton* checkBox = nsnull;
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if ((nsnull != mWidget) &&
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(NS_OK == mWidget->QueryInterface(kICheckButtonIID,(void**)&checkBox))) {
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PRBool state = PR_FALSE;
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checkBox->GetState(state);
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if (PR_TRUE != state) {
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result = PR_FALSE;
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} else {
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if (NS_CONTENT_ATTR_HAS_VALUE == valueResult) {
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aValues[0] = "on";
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} else {
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aValues[0] = value;
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}
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aNames[0] = name;
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aNumValues = 1;
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}
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NS_RELEASE(checkBox);
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}
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return result;
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}
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void
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nsCheckboxControlFrame::Reset()
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{
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nsICheckButton* checkBox = nsnull;
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if ((mWidget != nsnull) &&
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(NS_OK == mWidget->QueryInterface(kICheckButtonIID,(void**)&checkBox))) {
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PRBool checked;
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GetChecked(&checked);
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checkBox->SetState(checked);
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NS_RELEASE(checkBox);
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}
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}
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//
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// XXX: The following paint code is TEMPORARY. It is being used to get printing working
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// under windows. Later it may be used to GFX-render the controls to the display.
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// Expect this code to repackaged and moved to a new location in the future.
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//
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void
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nsCheckboxControlFrame::PaintFixedSizeCheckMark(nsIRenderingContext& aRenderingContext,
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float aPixelsToTwips)
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{
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//XXX: Check mark is always draw in black. If the this code is used to Render the widget
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//to the screen the color should be set using the CSS style color instead.
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aRenderingContext.SetColor(NS_RGB(0, 0, 0));
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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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DrawLine(aRenderingContext, 0 + ox, 2 + oy, 0 + ox, 4 + oy, PR_FALSE, 1, onePixel);
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DrawLine(aRenderingContext, 1 + ox, 3 + oy, 1 + ox, 5 + oy, PR_FALSE, 1, onePixel);
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DrawLine(aRenderingContext, 2 + ox, 4 + oy, 2 + ox, 6 + oy, PR_FALSE, 1, onePixel);
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DrawLine(aRenderingContext, 3 + ox, 3 + oy, 3 + ox, 5 + oy, PR_FALSE, 1, onePixel);
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DrawLine(aRenderingContext, 4 + ox, 2 + oy, 4 + ox, 4 + oy, PR_FALSE, 1, onePixel);
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DrawLine(aRenderingContext, 5 + ox, 1 + oy, 5 + ox, 3 + oy, PR_FALSE, 1, onePixel);
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DrawLine(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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nsCheckboxControlFrame::PaintFixedSizeCheckMarkBorder(nsIRenderingContext& aRenderingContext,
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float aPixelsToTwips)
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{
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//XXX: Future, use CSS to paint border instead of painting it ourselves here.
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// nsLeafFrame::Paint(aPresContext, aRenderingContext, aDirtyRect);
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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 twoPixels = NSIntPixelsToTwips(2, aPixelsToTwips);
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nscoord ninePixels = NSIntPixelsToTwips(9, aPixelsToTwips);
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nscoord twelvePixels = NSIntPixelsToTwips(12, aPixelsToTwips);
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// Draw Background
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nsRect rect(0, 0, twelvePixels, twelvePixels);
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aRenderingContext.SetColor(NS_RGB(255, 255, 255));
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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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DrawLine(aRenderingContext, 0 + ox, 0 + oy, 11 + ox, 0 + oy, PR_TRUE, 1, onePixel);
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DrawLine(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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DrawLine(aRenderingContext, 1 + ox, 11 + oy, 11 + ox, 11 + oy, PR_TRUE, 1, onePixel);
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DrawLine(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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DrawLine(aRenderingContext, 1 + ox, 1 + oy, 10 + ox, 1 + oy, PR_TRUE, 1, onePixel);
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DrawLine(aRenderingContext, 1 + ox, 1 + oy, 1 + ox, 10 + oy, PR_FALSE, 1, onePixel);
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}
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#if 0
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//XXX: Future, use the following code to draw a checkmark in any size.
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void
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nsCheckboxControlFrame::PaintScaledCheckMark(nsIRenderingContext& aRenderingContext,
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float aPixelsToTwips, PRUint32 aWidth, PRUint32 aHeight)
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{
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#define NS_CHECKED_POINTS 7
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// Points come from the coordinates on a 11X11 pixels rectangle with 0,0 at the lower
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// 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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nsPoint checkedPolygon[NS_CHECKED_POINTS];
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PRUint32 defIndex = 0;
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PRUint32 polyIndex = 0;
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PRBool scalable = PR_FALSE;
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aRenderingContext.SetColor(color->mColor);
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PRUint32 height = aHeight;
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for (defIndex = 0; defIndex < (NS_CHECKED_POINTS * 2); defIndex++) {
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checkedPolygon[polyIndex].x = nscoord(((checkedPolygonDef[defIndex])) * (height / 11.0) + (height / 11.0));
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defIndex++;
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checkedPolygon[polyIndex].y = nscoord((((checkedPolygonDef[defIndex]))) * (height / 11.0) + (height / 11.0));
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polyIndex++;
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}
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aRenderingContext.FillPolygon(checkedPolygon, NS_CHECKED_POINTS);
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}
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#endif
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void
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nsCheckboxControlFrame::PaintCheckBox(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect)
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{
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#ifdef XP_PC
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aRenderingContext.PushState();
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float p2t;
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aPresContext.GetScaledPixelsToTwips(p2t);
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//Offset fixed size checkbox in to the middle of the area reserved for the checkbox
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const int printOffsetX = (NS_PC_DESIRED_CHECKBOX_SIZE - NS_PC_ABSOLUTE_CHECKBOX_SIZE);
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const int printOffsetY = (NS_PC_DESIRED_CHECKBOX_SIZE - NS_PC_ABSOLUTE_CHECKBOX_SIZE);
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aRenderingContext.Translate(NSIntPixelsToTwips(printOffsetX, p2t),
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NSIntPixelsToTwips(printOffsetY, p2t));
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// Draw's background + border
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PaintFixedSizeCheckMarkBorder(aRenderingContext, p2t);
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PRBool checked = PR_TRUE;
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GetCurrentCheckState(&checked); // Get check state from the content model
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if (PR_TRUE == checked) {
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PaintFixedSizeCheckMark(aRenderingContext, p2t);
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}
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PRBool clip;
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aRenderingContext.PopState(clip);
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#endif
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}
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NS_METHOD
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nsCheckboxControlFrame::Paint(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect)
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{
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#ifdef XP_PC
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//XXX: This call and the Paint Methods could be moved to the Widget library instead of
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// being done here. In the future, If we decide to have the Widgets GFX rendered and use
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// CSS style to control all aspects of the widgets appearance, it may make sense to keep
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// The rendering code for the widget here in the Frame.
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PaintCheckBox(aPresContext, aRenderingContext, aDirtyRect);
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#endif
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return NS_OK;
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}
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