1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/*
* File: styleengine.cc
*
* Copyright 2008 Jorge Arellano Cid <jcid@dillo.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*/
#include <stdio.h>
#include "styleengine.hh"
using namespace dw::core::style;
StyleEngine::StyleEngine (dw::core::Layout *layout) {
StyleAttrs style_attrs;
FontAttrs font_attrs;
stack = new lout::misc::SimpleVector <Node> (1);
cssContext = new CssContext ();
this->layout = layout;
stack->increase ();
Node *n = stack->getRef (stack->size () - 1);
/* Create a dummy font, attribute, and tag for the bottom of the stack. */
font_attrs.name = "helvetica";
font_attrs.size = 12;
font_attrs.weight = 400;
font_attrs.style = FONT_STYLE_NORMAL;
style_attrs.initValues ();
style_attrs.font = Font::create (layout, &font_attrs);
style_attrs.color = Color::createSimple (layout, 0);
n->style = Style::create (layout, &style_attrs);
}
StyleEngine::~StyleEngine () {
delete stack;
}
/**
* \brief tell the styleEngine that a new html element has started.
*/
void StyleEngine::startElement (int tag, const char *id, const char *klass,
const char *style) {
// fprintf(stderr, "===> START %d %s %s %s\n", tag, id, klass, style);
if (stack->getRef (stack->size () - 1)->style == NULL)
style0 ();
stack->increase ();
Node *n = stack->getRef (stack->size () - 1);
n->style = NULL;
n->depth = stack->size ();
n->tag = tag;
n->id = id;
n->klass = klass;
n->styleAttribute = style;
}
/**
* \brief set properties that were definded using (mostly deprecated) HTML
* attributes (e.g. bgColor).
*/
void StyleEngine::setNonCssProperties (CssPropertyList *props) {
style0 (props); // evaluate now, so caller can free props
}
/**
* \brief tell the styleEngine that a html element has ended.
*/
void StyleEngine::endElement (int tag) {
// fprintf(stderr, "===> END %d\n", tag);
assert (stack->size () > 1);
assert (tag == stack->getRef (stack->size () - 1)->tag);
Node *n = stack->getRef (stack->size () - 1);
if (n->style)
n->style->unref ();
stack->setSize (stack->size () - 1);
}
void StyleEngine::apply (StyleAttrs *attrs, CssPropertyList *props) {
FontAttrs fontAttrs = *attrs->font;
for (int i = 0; i < props->size (); i++) {
CssProperty *p = props->getRef (i);
switch (p->name) {
/* \todo missing cases */
case CssProperty::CSS_PROPERTY_BACKGROUND_COLOR:
attrs->backgroundColor =
Color::createSimple (layout, p->value.intVal);
break;
case CssProperty::CSS_PROPERTY_BORDER_BOTTOM_COLOR:
attrs->borderColor.bottom =
Color::createSimple (layout, p->value.intVal);
break;
case CssProperty::CSS_PROPERTY_BORDER_BOTTOM_STYLE:
attrs->borderStyle.bottom = (BorderStyle) p->value.intVal;
break;
case CssProperty::CSS_PROPERTY_COLOR:
attrs->color = Color::createSimple (layout, p->value.intVal);
break;
case CssProperty::CSS_PROPERTY_CURSOR:
attrs->cursor = (Cursor) p->value.intVal;
break;
case CssProperty::CSS_PROPERTY_FONT_FAMILY:
fontAttrs.name = p->value.strVal;
break;
case CssProperty::CSS_PROPERTY_FONT_SIZE:
fontAttrs.size = p->value.intVal;
break;
case CssProperty::CSS_PROPERTY_FONT_STYLE:
fontAttrs.style = (FontStyle) p->value.intVal;
break;
case CssProperty::CSS_PROPERTY_FONT_WEIGHT:
fontAttrs.weight = p->value.intVal;
break;
case CssProperty::CSS_PROPERTY_LIST_STYLE_TYPE:
attrs->listStyleType = (ListStyleType) p->value.intVal;
break;
case CssProperty::CSS_PROPERTY_TEXT_ALIGN:
attrs->textAlign = (TextAlignType) p->value.intVal;
break;
case CssProperty::CSS_PROPERTY_TEXT_DECORATION:
attrs->textDecoration |= p->value.intVal;
break;
case CssProperty::PROPERTY_X_LINK:
attrs->x_link = p->value.intVal;
break;
case CssProperty::PROPERTY_X_IMG:
attrs->x_img = p->value.intVal;
break;
default:
break;
}
}
attrs->font = Font::create (layout, &fontAttrs);
}
/**
* \brief Create a new style object based on the previously opened / closed
* HTML elements and the nonCssProperties that have been set.
* This method is private. Call style() to get a current style object.
*/
Style * StyleEngine::style0 (CssPropertyList *nonCssProperties) {
CssPropertyList props;
CssPropertyList *tagStyleProps = CssPropertyList::parse (
stack->getRef (stack->size () - 1)->styleAttribute);
// get previous style from the stack
StyleAttrs attrs = *stack->getRef (stack->size () - 2)->style;
cssContext->apply (&props, this, tagStyleProps, nonCssProperties);
apply (&attrs, &props);
stack->getRef (stack->size () - 1)->style = Style::create (layout, &attrs);
return stack->getRef (stack->size () - 1)->style;
}
|
