1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is the Mozilla SVG project.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Crocodile Clips Ltd..
19 : * Portions created by the Initial Developer are Copyright (C) 2001
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Alex Fritze <alex.fritze@crocodile-clips.com> (original author)
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either the GNU General Public License Version 2 or later (the "GPL"), or
27 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
29 : * of those above. If you wish to allow use of your version of this file only
30 : * under the terms of either the GPL or the LGPL, and not to allow others to
31 : * use your version of this file under the terms of the MPL, indicate your
32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
35 : * the terms of any one of the MPL, the GPL or the LGPL.
36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : #include "nsIDOMSVGTransformable.h"
40 : #include "nsSVGGFrame.h"
41 : #include "nsIFrame.h"
42 : #include "nsGkAtoms.h"
43 : #include "nsSVGUtils.h"
44 : #include "nsSVGGraphicElement.h"
45 :
46 : //----------------------------------------------------------------------
47 : // Implementation
48 :
49 : nsIFrame*
50 0 : NS_NewSVGGFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
51 : {
52 0 : return new (aPresShell) nsSVGGFrame(aContext);
53 : }
54 :
55 0 : NS_IMPL_FRAMEARENA_HELPERS(nsSVGGFrame)
56 :
57 : #ifdef DEBUG
58 : NS_IMETHODIMP
59 0 : nsSVGGFrame::Init(nsIContent* aContent,
60 : nsIFrame* aParent,
61 : nsIFrame* aPrevInFlow)
62 : {
63 0 : nsCOMPtr<nsIDOMSVGTransformable> transformable = do_QueryInterface(aContent);
64 0 : NS_ASSERTION(transformable,
65 : "The element doesn't support nsIDOMSVGTransformable\n");
66 :
67 0 : return nsSVGGFrameBase::Init(aContent, aParent, aPrevInFlow);
68 : }
69 : #endif /* DEBUG */
70 :
71 : nsIAtom *
72 0 : nsSVGGFrame::GetType() const
73 : {
74 0 : return nsGkAtoms::svgGFrame;
75 : }
76 :
77 : //----------------------------------------------------------------------
78 : // nsISVGChildFrame methods
79 :
80 : void
81 0 : nsSVGGFrame::NotifySVGChanged(PRUint32 aFlags)
82 : {
83 0 : NS_ABORT_IF_FALSE(!(aFlags & DO_NOT_NOTIFY_RENDERING_OBSERVERS) ||
84 : (GetStateBits() & NS_STATE_SVG_NONDISPLAY_CHILD),
85 : "Must be NS_STATE_SVG_NONDISPLAY_CHILD!");
86 :
87 0 : NS_ABORT_IF_FALSE(aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED),
88 : "Invalidation logic may need adjusting");
89 :
90 0 : if (aFlags & TRANSFORM_CHANGED) {
91 : // make sure our cached transform matrix gets (lazily) updated
92 0 : mCanvasTM = nsnull;
93 : }
94 :
95 0 : nsSVGGFrameBase::NotifySVGChanged(aFlags);
96 0 : }
97 :
98 : gfxMatrix
99 0 : nsSVGGFrame::GetCanvasTM()
100 : {
101 0 : if (!mCanvasTM) {
102 0 : NS_ASSERTION(mParent, "null parent");
103 :
104 0 : nsSVGContainerFrame *parent = static_cast<nsSVGContainerFrame*>(mParent);
105 0 : nsSVGGraphicElement *content = static_cast<nsSVGGraphicElement*>(mContent);
106 :
107 0 : gfxMatrix tm = content->PrependLocalTransformsTo(parent->GetCanvasTM());
108 :
109 0 : mCanvasTM = new gfxMatrix(tm);
110 : }
111 0 : return *mCanvasTM;
112 : }
113 :
114 : NS_IMETHODIMP
115 0 : nsSVGGFrame::AttributeChanged(PRInt32 aNameSpaceID,
116 : nsIAtom* aAttribute,
117 : PRInt32 aModType)
118 : {
119 0 : if (aNameSpaceID == kNameSpaceID_None &&
120 : aAttribute == nsGkAtoms::transform) {
121 :
122 0 : NotifySVGChanged(TRANSFORM_CHANGED);
123 : }
124 :
125 0 : return NS_OK;
126 : }
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