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 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 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 31 SkStaticTextView::~SkStaticTextView() 32 { 33 } 34 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 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 62 void SkStaticTextView::setSpacingAlign(SkTextBox::SpacingAlign align) 63 { 64 fSpacingAlign = SkToU8(align); 65 this->inval(NULL); 66 } 67 68 void SkStaticTextView::getMargin(SkPoint* margin) const 69 { 70 if (margin) 71 *margin = fMargin; 72 } 73 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 84 size_t SkStaticTextView::getText(SkString* text) const 85 { 86 if (text) 87 *text = fText; 88 return fText.size(); 89 } 90 91 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 98 void SkStaticTextView::setText(const SkString& text) 99 { 100 this->setText(text.c_str(), text.size()); 101 } 102 103 void SkStaticTextView::setText(const char text[]) 104 { 105 if (text == NULL) 106 text = ""; 107 this->setText(text, strlen(text)); 108 } 109 110 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 } 119 120 void SkStaticTextView::getPaint(SkPaint* paint) const 121 { 122 if (paint) 123 *paint = fPaint; 124 } 125 126 void SkStaticTextView::setPaint(const SkPaint& paint) 127 { 128 if (fPaint != paint) 129 { 130 fPaint = paint; 131 this->computeSize(); 132 this->inval(NULL); 133 } 134 } 135 136 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 } 150 151 void SkStaticTextView::onInflate(const SkDOM& dom, const SkDOM::Node* node) 152 { 153 #if 0 154 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 if ((index = dom.findList(node, "spacing-align", "start,center,end")) >= 0) 163 this->setSpacingAlign((SkTextBox::SpacingAlign)index); 164 else 165 assert_no_attr(dom, node, "spacing-align"); 166 167 SkScalar s[2]; 168 if (dom.findScalars(node, "margin", s, 2)) 169 this->setMargin(s[0], s[1]); 170 else 171 assert_no_attr(dom, node, "margin"); 172 173 const char* text = dom.findAttr(node, "text"); 174 if (text) 175 this->setText(text); 176 177 if ((node = dom.getFirstChild(node, "paint")) != NULL && 178 (node = dom.getFirstChild(node, "screenplay")) != NULL) 179 { 180 inflate_paint(dom, node, &fPaint); 181 } 182 #endif 183 } 184 185
