1 /*
2 * Copyright (C) 2009 Alex Milowski (alex@milowski.com). All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
14 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
15 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
16 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
17 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
18 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
19 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27
28 #if ENABLE(MATHML)
29
30 #include "RenderMathMLBlock.h"
31
32 #include "FontSelector.h"
33 #include "GraphicsContext.h"
34 #include "MathMLNames.h"
35 #include "RenderInline.h"
36 #include "RenderText.h"
37
38 namespace WebCore {
39
40 using namespace MathMLNames;
41
RenderMathMLBlock(Node * container)42 RenderMathMLBlock::RenderMathMLBlock(Node* container)
43 : RenderBlock(container)
44 {
45 }
46
isChildAllowed(RenderObject * child,RenderStyle *) const47 bool RenderMathMLBlock::isChildAllowed(RenderObject* child, RenderStyle*) const
48 {
49 return child->node() && child->node()->nodeType() == Node::ELEMENT_NODE;
50 }
51
makeBlockStyle()52 PassRefPtr<RenderStyle> RenderMathMLBlock::makeBlockStyle()
53 {
54 RefPtr<RenderStyle> newStyle = RenderStyle::create();
55 newStyle->inheritFrom(style());
56 newStyle->setDisplay(BLOCK);
57 return newStyle;
58 }
59
nonOperatorHeight() const60 int RenderMathMLBlock::nonOperatorHeight() const
61 {
62 if (!isRenderMathMLOperator())
63 return offsetHeight();
64
65 return 0;
66 }
67
stretchToHeight(int height)68 void RenderMathMLBlock::stretchToHeight(int height)
69 {
70 for (RenderObject* current = firstChild(); current; current = current->nextSibling())
71 if (current->isRenderMathMLBlock()) {
72 RenderMathMLBlock* block = toRenderMathMLBlock(current);
73 block->stretchToHeight(height);
74 }
75 }
76
77 #if ENABLE(DEBUG_MATH_LAYOUT)
paint(PaintInfo & info,int tx,int ty)78 void RenderMathMLBlock::paint(PaintInfo& info, int tx, int ty)
79 {
80 RenderBlock::paint(info, tx, ty);
81
82 if (info.context->paintingDisabled() || info.phase != PaintPhaseForeground)
83 return;
84
85 tx += x();
86 ty += y();
87
88 GraphicsContextStateSaver stateSaver(*info.context);
89
90 info.context->setStrokeThickness(1.0f);
91 info.context->setStrokeStyle(SolidStroke);
92 info.context->setStrokeColor(Color(0, 0, 255), ColorSpaceSRGB);
93
94 info.context->drawLine(IntPoint(tx, ty), IntPoint(tx + offsetWidth(), ty));
95 info.context->drawLine(IntPoint(tx + offsetWidth(), ty), IntPoint(tx + offsetWidth(), ty + offsetHeight()));
96 info.context->drawLine(IntPoint(tx, ty + offsetHeight()), IntPoint(tx + offsetWidth(), ty + offsetHeight()));
97 info.context->drawLine(IntPoint(tx, ty), IntPoint(tx, ty + offsetHeight()));
98
99 int topStart = paddingTop();
100
101 info.context->setStrokeColor(Color(0, 255, 0), ColorSpaceSRGB);
102
103 info.context->drawLine(IntPoint(tx, ty + topStart), IntPoint(tx + offsetWidth(), ty + topStart));
104
105 int baseline = baselinePosition(AlphabeticBaseline, true, HorizontalLine);
106
107 info.context->setStrokeColor(Color(255, 0, 0), ColorSpaceSRGB);
108
109 info.context->drawLine(IntPoint(tx, ty + baseline), IntPoint(tx + offsetWidth(), ty + baseline));
110 }
111 #endif // ENABLE(DEBUG_MATH_LAYOUT)
112
113
114 }
115
116 #endif
117