michael@0: 
michael@0: /*
michael@0:  * Copyright 2011 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: #include "SkWidgetViews.h"
michael@0: #include "SkTextBox.h"
michael@0: 
michael@0: #ifdef SK_DEBUG
michael@0: static void assert_no_attr(const SkDOM& dom, const SkDOM::Node* node, const char attr[])
michael@0: {
michael@0:     const char* value = dom.findAttr(node, attr);
michael@0:     if (value)
michael@0:         SkDebugf("unknown attribute %s=\"%s\"\n", attr, value);
michael@0: }
michael@0: #else
michael@0:     #define assert_no_attr(dom, node, attr)
michael@0: #endif
michael@0: 
michael@0: SkStaticTextView::SkStaticTextView()
michael@0: {
michael@0:     fMargin.set(0, 0);
michael@0:     fMode = kFixedSize_Mode;
michael@0:     fSpacingAlign = SkTextBox::kStart_SpacingAlign;
michael@0: 
michael@0: //    init_skin_paint(kStaticText_SkinEnum, &fPaint);
michael@0: }
michael@0: 
michael@0: SkStaticTextView::~SkStaticTextView()
michael@0: {
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::computeSize()
michael@0: {
michael@0:     if (fMode == kAutoWidth_Mode)
michael@0:     {
michael@0:         SkScalar width = fPaint.measureText(fText.c_str(), fText.size());
michael@0:         this->setWidth(width + fMargin.fX * 2);
michael@0:     }
michael@0:     else if (fMode == kAutoHeight_Mode)
michael@0:     {
michael@0:         SkScalar width = this->width() - fMargin.fX * 2;
michael@0:         int lines = width > 0 ? SkTextLineBreaker::CountLines(fText.c_str(), fText.size(), fPaint, width) : 0;
michael@0: 
michael@0:         this->setHeight(lines * fPaint.getFontSpacing() + fMargin.fY * 2);
michael@0:     }
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::setMode(Mode mode)
michael@0: {
michael@0:     SkASSERT((unsigned)mode < kModeCount);
michael@0: 
michael@0:     if (fMode != mode)
michael@0:     {
michael@0:         fMode = SkToU8(mode);
michael@0:         this->computeSize();
michael@0:     }
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::setSpacingAlign(SkTextBox::SpacingAlign align)
michael@0: {
michael@0:     fSpacingAlign = SkToU8(align);
michael@0:     this->inval(NULL);
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::getMargin(SkPoint* margin) const
michael@0: {
michael@0:     if (margin)
michael@0:         *margin = fMargin;
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::setMargin(SkScalar dx, SkScalar dy)
michael@0: {
michael@0:     if (fMargin.fX != dx || fMargin.fY != dy)
michael@0:     {
michael@0:         fMargin.set(dx, dy);
michael@0:         this->computeSize();
michael@0:         this->inval(NULL);
michael@0:     }
michael@0: }
michael@0: 
michael@0: size_t SkStaticTextView::getText(SkString* text) const
michael@0: {
michael@0:     if (text)
michael@0:         *text = fText;
michael@0:     return fText.size();
michael@0: }
michael@0: 
michael@0: size_t SkStaticTextView::getText(char text[]) const
michael@0: {
michael@0:     if (text)
michael@0:         memcpy(text, fText.c_str(), fText.size());
michael@0:     return fText.size();
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::setText(const SkString& text)
michael@0: {
michael@0:     this->setText(text.c_str(), text.size());
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::setText(const char text[])
michael@0: {
michael@0:     if (text == NULL)
michael@0:         text = "";
michael@0:     this->setText(text, strlen(text));
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::setText(const char text[], size_t len)
michael@0: {
michael@0:     if (!fText.equals(text, len))
michael@0:     {
michael@0:         fText.set(text, len);
michael@0:         this->computeSize();
michael@0:         this->inval(NULL);
michael@0:     }
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::getPaint(SkPaint* paint) const
michael@0: {
michael@0:     if (paint)
michael@0:         *paint = fPaint;
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::setPaint(const SkPaint& paint)
michael@0: {
michael@0:     if (fPaint != paint)
michael@0:     {
michael@0:         fPaint = paint;
michael@0:         this->computeSize();
michael@0:         this->inval(NULL);
michael@0:     }
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::onDraw(SkCanvas* canvas)
michael@0: {
michael@0:     this->INHERITED::onDraw(canvas);
michael@0: 
michael@0:     if (fText.isEmpty())
michael@0:         return;
michael@0: 
michael@0:     SkTextBox    box;
michael@0: 
michael@0:     box.setMode(fMode == kAutoWidth_Mode ? SkTextBox::kOneLine_Mode : SkTextBox::kLineBreak_Mode);
michael@0:     box.setSpacingAlign(this->getSpacingAlign());
michael@0:     box.setBox(fMargin.fX, fMargin.fY, this->width() - fMargin.fX, this->height() - fMargin.fY);
michael@0:     box.draw(canvas, fText.c_str(), fText.size(), fPaint);
michael@0: }
michael@0: 
michael@0: void SkStaticTextView::onInflate(const SkDOM& dom, const SkDOM::Node* node)
michael@0: {
michael@0: if (false) { // avoid bit rot, suppress warning
michael@0:     this->INHERITED::onInflate(dom, node);
michael@0: 
michael@0:     int    index;
michael@0:     if ((index = dom.findList(node, "mode", "fixed,auto-width,auto-height")) >= 0) {
michael@0:         this->setMode((Mode)index);
michael@0:     } else {
michael@0:         assert_no_attr(dom, node, "mode");
michael@0:     }
michael@0: 
michael@0:     if ((index = dom.findList(node, "spacing-align", "start,center,end")) >= 0) {
michael@0:         this->setSpacingAlign((SkTextBox::SpacingAlign)index);
michael@0:     } else {
michael@0:         assert_no_attr(dom, node, "spacing-align");
michael@0:     }
michael@0: 
michael@0:     SkScalar s[2];
michael@0:     if (dom.findScalars(node, "margin", s, 2)) {
michael@0:         this->setMargin(s[0], s[1]);
michael@0:     } else {
michael@0:         assert_no_attr(dom, node, "margin");
michael@0:     }
michael@0: 
michael@0:     const char* text = dom.findAttr(node, "text");
michael@0:     if (text) {
michael@0:         this->setText(text);
michael@0:     }
michael@0: 
michael@0:     if ((node = dom.getFirstChild(node, "paint")) != NULL &&
michael@0:         (node = dom.getFirstChild(node, "screenplay")) != NULL)
michael@0:     {
michael@0: // FIXME: Including inflate_paint causes Windows build to fail -- it complains
michael@0: //  that SKListView::SkListView is undefined.
michael@0: #if 0
michael@0:         inflate_paint(dom, node, &fPaint);
michael@0: #endif
michael@0:     }
michael@0: }
michael@0: }