forked from mirrors/gecko-dev
377 lines
12 KiB
C++
377 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 Communicator client 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 "nsButtonFrameRenderer.h"
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#include "nsIRenderingContext.h"
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#include "nsCSSRendering.h"
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#include "nsPresContext.h"
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#include "nsGkAtoms.h"
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#include "nsCSSPseudoElements.h"
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#include "nsINameSpaceManager.h"
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#include "nsStyleSet.h"
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#include "nsDisplayList.h"
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#include "nsITheme.h"
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#include "nsThemeConstants.h"
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#define ACTIVE "active"
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#define HOVER "hover"
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#define FOCUS "focus"
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nsButtonFrameRenderer::nsButtonFrameRenderer()
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{
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MOZ_COUNT_CTOR(nsButtonFrameRenderer);
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}
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nsButtonFrameRenderer::~nsButtonFrameRenderer()
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{
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MOZ_COUNT_DTOR(nsButtonFrameRenderer);
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}
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void
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nsButtonFrameRenderer::SetFrame(nsFrame* aFrame, nsPresContext* aPresContext)
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{
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mFrame = aFrame;
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ReResolveStyles(aPresContext);
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}
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nsIFrame*
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nsButtonFrameRenderer::GetFrame()
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{
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return mFrame;
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}
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void
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nsButtonFrameRenderer::SetDisabled(PRBool aDisabled, PRBool notify)
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{
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if (aDisabled)
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mFrame->GetContent()->SetAttr(kNameSpaceID_None, nsGkAtoms::disabled, EmptyString(),
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notify);
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else
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mFrame->GetContent()->UnsetAttr(kNameSpaceID_None, nsGkAtoms::disabled, notify);
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}
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PRBool
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nsButtonFrameRenderer::isDisabled()
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{
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// get the content
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return mFrame->GetContent()->HasAttr(kNameSpaceID_None,
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nsGkAtoms::disabled);
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}
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class nsDisplayButtonBorderBackground : public nsDisplayItem {
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public:
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nsDisplayButtonBorderBackground(nsButtonFrameRenderer* aRenderer)
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: nsDisplayItem(aRenderer->GetFrame()), mBFR(aRenderer) {
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MOZ_COUNT_CTOR(nsDisplayButtonBorderBackground);
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}
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#ifdef NS_BUILD_REFCNT_LOGGING
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virtual ~nsDisplayButtonBorderBackground() {
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MOZ_COUNT_DTOR(nsDisplayButtonBorderBackground);
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}
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#endif
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virtual nsIFrame* HitTest(nsDisplayListBuilder* aBuilder, nsPoint aPt,
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HitTestState* aState) {
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return mFrame;
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}
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virtual void Paint(nsDisplayListBuilder* aBuilder, nsIRenderingContext* aCtx,
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const nsRect& aDirtyRect);
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NS_DISPLAY_DECL_NAME("ButtonBorderBackground")
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private:
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nsButtonFrameRenderer* mBFR;
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};
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class nsDisplayButtonForeground : public nsDisplayItem {
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public:
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nsDisplayButtonForeground(nsButtonFrameRenderer* aRenderer)
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: nsDisplayItem(aRenderer->GetFrame()), mBFR(aRenderer) {
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MOZ_COUNT_CTOR(nsDisplayButtonForeground);
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}
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#ifdef NS_BUILD_REFCNT_LOGGING
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virtual ~nsDisplayButtonForeground() {
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MOZ_COUNT_DTOR(nsDisplayButtonForeground);
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}
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#endif
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virtual void Paint(nsDisplayListBuilder* aBuilder, nsIRenderingContext* aCtx,
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const nsRect& aDirtyRect);
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NS_DISPLAY_DECL_NAME("ButtonForeground")
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private:
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nsButtonFrameRenderer* mBFR;
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};
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void nsDisplayButtonBorderBackground::Paint(nsDisplayListBuilder* aBuilder,
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nsIRenderingContext* aCtx,
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const nsRect& aDirtyRect)
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{
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NS_ASSERTION(mFrame, "No frame?");
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nsPresContext* pc = mFrame->PresContext();
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nsRect r = nsRect(aBuilder->ToReferenceFrame(mFrame), mFrame->GetSize());
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// draw the border and background inside the focus and outline borders
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mBFR->PaintBorderAndBackground(pc, *aCtx, aDirtyRect, r);
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}
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void nsDisplayButtonForeground::Paint(nsDisplayListBuilder* aBuilder,
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nsIRenderingContext* aCtx,
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const nsRect& aDirtyRect)
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{
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nsPresContext *presContext = mFrame->PresContext();
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const nsStyleDisplay *disp = mFrame->GetStyleDisplay();
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if (!mFrame->IsThemed(disp) ||
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!presContext->GetTheme()->ThemeDrawsFocusForWidget(presContext, mFrame, disp->mAppearance)) {
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// draw the focus and outline borders
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nsRect r = nsRect(aBuilder->ToReferenceFrame(mFrame), mFrame->GetSize());
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mBFR->PaintOutlineAndFocusBorders(presContext, *aCtx, aDirtyRect, r);
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}
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}
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nsresult
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nsButtonFrameRenderer::DisplayButton(nsDisplayListBuilder* aBuilder,
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nsDisplayList* aBackground,
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nsDisplayList* aForeground)
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{
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nsresult rv = aBackground->AppendNewToTop(new (aBuilder)
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nsDisplayButtonBorderBackground(this));
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NS_ENSURE_SUCCESS(rv, rv);
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return aForeground->AppendNewToTop(new (aBuilder)
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nsDisplayButtonForeground(this));
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}
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void
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nsButtonFrameRenderer::PaintOutlineAndFocusBorders(nsPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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const nsRect& aRect)
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{
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// once we have all that we'll draw the focus if we have it. We will need to draw 2 focuses,
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// the inner and the outer. This is so we can do any kind of look and feel some buttons have
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// focus on the outside like mac and motif. While others like windows have it inside (dotted line).
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// Usually only one will be specifed. But I guess you could have both if you wanted to.
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nsRect rect;
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if (mOuterFocusStyle) {
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// ---------- paint the outer focus border -------------
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GetButtonOuterFocusRect(aRect, rect);
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const nsStyleBorder* border = mOuterFocusStyle->GetStyleBorder();
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, mFrame,
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aDirtyRect, rect, *border, mOuterFocusStyle, 0);
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}
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if (mInnerFocusStyle) {
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// ---------- paint the inner focus border -------------
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GetButtonInnerFocusRect(aRect, rect);
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const nsStyleBorder* border = mInnerFocusStyle->GetStyleBorder();
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, mFrame,
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aDirtyRect, rect, *border, mInnerFocusStyle, 0);
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}
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}
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void
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nsButtonFrameRenderer::PaintBorderAndBackground(nsPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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const nsRect& aRect)
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{
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// get the button rect this is inside the focus and outline rects
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nsRect buttonRect;
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GetButtonRect(aRect, buttonRect);
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nsStyleContext* context = mFrame->GetStyleContext();
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const nsStyleBorder* border = context->GetStyleBorder();
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const nsStylePadding* padding = context->GetStylePadding();
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nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, mFrame,
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aDirtyRect, buttonRect, *border, *padding,
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PR_FALSE);
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, mFrame,
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aDirtyRect, buttonRect, *border, context, 0);
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}
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void
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nsButtonFrameRenderer::GetButtonOuterFocusRect(const nsRect& aRect, nsRect& focusRect)
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{
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focusRect = aRect;
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}
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void
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nsButtonFrameRenderer::GetButtonRect(const nsRect& aRect, nsRect& r)
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{
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r = aRect;
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r.Deflate(GetButtonOuterFocusBorderAndPadding());
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}
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void
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nsButtonFrameRenderer::GetButtonInnerFocusRect(const nsRect& aRect, nsRect& focusRect)
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{
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GetButtonRect(aRect, focusRect);
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focusRect.Deflate(GetButtonBorderAndPadding());
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focusRect.Deflate(GetButtonInnerFocusMargin());
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}
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nsMargin
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nsButtonFrameRenderer::GetButtonOuterFocusBorderAndPadding()
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{
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nsMargin result(0,0,0,0);
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if (mOuterFocusStyle) {
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if (!mOuterFocusStyle->GetStylePadding()->GetPadding(result)) {
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NS_NOTYETIMPLEMENTED("percentage padding");
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}
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result += mOuterFocusStyle->GetStyleBorder()->GetActualBorder();
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}
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return result;
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}
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nsMargin
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nsButtonFrameRenderer::GetButtonBorderAndPadding()
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{
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return mFrame->GetUsedBorderAndPadding();
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}
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/**
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* Gets the size of the buttons border this is the union of the normal and disabled borders.
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*/
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nsMargin
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nsButtonFrameRenderer::GetButtonInnerFocusMargin()
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{
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nsMargin innerFocusMargin(0,0,0,0);
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if (mInnerFocusStyle) {
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const nsStyleMargin* margin = mInnerFocusStyle->GetStyleMargin();
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if (!margin->GetMargin(innerFocusMargin)) {
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NS_NOTYETIMPLEMENTED("percentage margin");
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}
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}
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return innerFocusMargin;
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}
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nsMargin
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nsButtonFrameRenderer::GetButtonInnerFocusBorderAndPadding()
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{
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nsMargin result(0,0,0,0);
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if (mInnerFocusStyle) {
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if (!mInnerFocusStyle->GetStylePadding()->GetPadding(result)) {
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NS_NOTYETIMPLEMENTED("percentage padding");
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}
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result += mInnerFocusStyle->GetStyleBorder()->GetActualBorder();
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}
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return result;
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}
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nsMargin
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nsButtonFrameRenderer::GetButtonOutlineBorderAndPadding()
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{
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nsMargin borderAndPadding(0,0,0,0);
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return borderAndPadding;
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}
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// gets the full size of our border with all the focus borders
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nsMargin
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nsButtonFrameRenderer::GetFullButtonBorderAndPadding()
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{
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return GetAddedButtonBorderAndPadding() + GetButtonBorderAndPadding();
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}
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// gets all the focus borders and padding that will be added to the regular border
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nsMargin
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nsButtonFrameRenderer::GetAddedButtonBorderAndPadding()
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{
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return GetButtonOuterFocusBorderAndPadding() + GetButtonInnerFocusMargin() + GetButtonInnerFocusBorderAndPadding();
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}
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/**
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* Call this when styles change
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*/
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void
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nsButtonFrameRenderer::ReResolveStyles(nsPresContext* aPresContext)
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{
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// get all the styles
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nsStyleContext* context = mFrame->GetStyleContext();
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nsStyleSet *styleSet = aPresContext->StyleSet();
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// style for the inner such as a dotted line (Windows)
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mInnerFocusStyle = styleSet->ProbePseudoStyleFor(mFrame->GetContent(),
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nsCSSPseudoElements::mozFocusInner,
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context);
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// style for outer focus like a ridged border (MAC).
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mOuterFocusStyle = styleSet->ProbePseudoStyleFor(mFrame->GetContent(),
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nsCSSPseudoElements::mozFocusOuter,
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context);
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}
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nsStyleContext*
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nsButtonFrameRenderer::GetStyleContext(PRInt32 aIndex) const
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{
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switch (aIndex) {
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case NS_BUTTON_RENDERER_FOCUS_INNER_CONTEXT_INDEX:
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return mInnerFocusStyle;
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case NS_BUTTON_RENDERER_FOCUS_OUTER_CONTEXT_INDEX:
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return mOuterFocusStyle;
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default:
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return nsnull;
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}
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}
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void
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nsButtonFrameRenderer::SetStyleContext(PRInt32 aIndex, nsStyleContext* aStyleContext)
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{
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switch (aIndex) {
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case NS_BUTTON_RENDERER_FOCUS_INNER_CONTEXT_INDEX:
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mInnerFocusStyle = aStyleContext;
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break;
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case NS_BUTTON_RENDERER_FOCUS_OUTER_CONTEXT_INDEX:
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mOuterFocusStyle = aStyleContext;
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break;
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}
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}
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