1
2 /*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8 #include "SkWidgetViews.h"
9 #include "SkTextBox.h"
10
11 #ifdef SK_DEBUG
assert_no_attr(const SkDOM & dom,const SkDOM::Node * node,const char attr[])12 static void assert_no_attr(const SkDOM& dom, const SkDOM::Node* node, const char attr[])
13 {
14 const char* value = dom.findAttr(node, attr);
15 if (value)
16 SkDebugf("unknown attribute %s=\"%s\"\n", attr, value);
17 }
18 #else
19 #define assert_no_attr(dom, node, attr)
20 #endif
21
SkStaticTextView()22 SkStaticTextView::SkStaticTextView()
23 {
24 fMargin.set(0, 0);
25 fMode = kFixedSize_Mode;
26 fSpacingAlign = SkTextBox::kStart_SpacingAlign;
27
28 // init_skin_paint(kStaticText_SkinEnum, &fPaint);
29 }
30
~SkStaticTextView()31 SkStaticTextView::~SkStaticTextView()
32 {
33 }
34
computeSize()35 void SkStaticTextView::computeSize()
36 {
37 if (fMode == kAutoWidth_Mode)
38 {
39 SkScalar width = fPaint.measureText(fText.c_str(), fText.size());
40 this->setWidth(width + fMargin.fX * 2);
41 }
42 else if (fMode == kAutoHeight_Mode)
43 {
44 SkScalar width = this->width() - fMargin.fX * 2;
45 int lines = width > 0 ? SkTextLineBreaker::CountLines(fText.c_str(), fText.size(), fPaint, width) : 0;
46
47 this->setHeight(lines * fPaint.getFontSpacing() + fMargin.fY * 2);
48 }
49 }
50
setMode(Mode mode)51 void SkStaticTextView::setMode(Mode mode)
52 {
53 SkASSERT((unsigned)mode < kModeCount);
54
55 if (fMode != mode)
56 {
57 fMode = SkToU8(mode);
58 this->computeSize();
59 }
60 }
61
setSpacingAlign(SkTextBox::SpacingAlign align)62 void SkStaticTextView::setSpacingAlign(SkTextBox::SpacingAlign align)
63 {
64 fSpacingAlign = SkToU8(align);
65 this->inval(NULL);
66 }
67
getMargin(SkPoint * margin) const68 void SkStaticTextView::getMargin(SkPoint* margin) const
69 {
70 if (margin)
71 *margin = fMargin;
72 }
73
setMargin(SkScalar dx,SkScalar dy)74 void SkStaticTextView::setMargin(SkScalar dx, SkScalar dy)
75 {
76 if (fMargin.fX != dx || fMargin.fY != dy)
77 {
78 fMargin.set(dx, dy);
79 this->computeSize();
80 this->inval(NULL);
81 }
82 }
83
getText(SkString * text) const84 size_t SkStaticTextView::getText(SkString* text) const
85 {
86 if (text)
87 *text = fText;
88 return fText.size();
89 }
90
getText(char text[]) const91 size_t SkStaticTextView::getText(char text[]) const
92 {
93 if (text)
94 memcpy(text, fText.c_str(), fText.size());
95 return fText.size();
96 }
97
setText(const SkString & text)98 void SkStaticTextView::setText(const SkString& text)
99 {
100 this->setText(text.c_str(), text.size());
101 }
102
setText(const char text[])103 void SkStaticTextView::setText(const char text[])
104 {
105 if (text == NULL)
106 text = "";
107 this->setText(text, strlen(text));
108 }
109
setText(const char text[],size_t len)110 void SkStaticTextView::setText(const char text[], size_t len)
111 {
112 if (!fText.equals(text, len))
113 {
114 fText.set(text, len);
115 this->computeSize();
116 this->inval(NULL);
117 }
118 }
119
getPaint(SkPaint * paint) const120 void SkStaticTextView::getPaint(SkPaint* paint) const
121 {
122 if (paint)
123 *paint = fPaint;
124 }
125
setPaint(const SkPaint & paint)126 void SkStaticTextView::setPaint(const SkPaint& paint)
127 {
128 if (fPaint != paint)
129 {
130 fPaint = paint;
131 this->computeSize();
132 this->inval(NULL);
133 }
134 }
135
onDraw(SkCanvas * canvas)136 void SkStaticTextView::onDraw(SkCanvas* canvas)
137 {
138 this->INHERITED::onDraw(canvas);
139
140 if (fText.isEmpty())
141 return;
142
143 SkTextBox box;
144
145 box.setMode(fMode == kAutoWidth_Mode ? SkTextBox::kOneLine_Mode : SkTextBox::kLineBreak_Mode);
146 box.setSpacingAlign(this->getSpacingAlign());
147 box.setBox(fMargin.fX, fMargin.fY, this->width() - fMargin.fX, this->height() - fMargin.fY);
148 box.draw(canvas, fText.c_str(), fText.size(), fPaint);
149 }
150
onInflate(const SkDOM & dom,const SkDOM::Node * node)151 void SkStaticTextView::onInflate(const SkDOM& dom, const SkDOM::Node* node)
152 {
153 if (false) { // avoid bit rot, suppress warning
154 this->INHERITED::onInflate(dom, node);
155
156 int index;
157 if ((index = dom.findList(node, "mode", "fixed,auto-width,auto-height")) >= 0) {
158 this->setMode((Mode)index);
159 } else {
160 assert_no_attr(dom, node, "mode");
161 }
162
163 if ((index = dom.findList(node, "spacing-align", "start,center,end")) >= 0) {
164 this->setSpacingAlign((SkTextBox::SpacingAlign)index);
165 } else {
166 assert_no_attr(dom, node, "spacing-align");
167 }
168
169 SkScalar s[2];
170 if (dom.findScalars(node, "margin", s, 2)) {
171 this->setMargin(s[0], s[1]);
172 } else {
173 assert_no_attr(dom, node, "margin");
174 }
175
176 const char* text = dom.findAttr(node, "text");
177 if (text) {
178 this->setText(text);
179 }
180
181 if ((node = dom.getFirstChild(node, "paint")) != NULL &&
182 (node = dom.getFirstChild(node, "screenplay")) != NULL)
183 {
184 // FIXME: Including inflate_paint causes Windows build to fail -- it complains
185 // that SKListView::SkListView is undefined.
186 #if 0
187 inflate_paint(dom, node, &fPaint);
188 #endif
189 }
190 }
191 }
192