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svgdevicecontext.cpp
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/////////////////////////////////////////////////////////////////////////////
// Name: svgdevicecontext.cpp
// Author: Laurent Pugin
// Created: 2011
// Copyright (c) Authors and others. All rights reserved.
/////////////////////////////////////////////////////////////////////////////
#include "svgdevicecontext.h"
//----------------------------------------------------------------------------
#include <cassert>
//----------------------------------------------------------------------------
#include "doc.h"
#include "floatingobject.h"
#include "glyph.h"
#include "layerelement.h"
#include "staff.h"
#include "staffdef.h"
#include "view.h"
#include "vrv.h"
//----------------------------------------------------------------------------
namespace vrv {
#define space " "
#define semicolon ";"
//----------------------------------------------------------------------------
// SvgDeviceContext
//----------------------------------------------------------------------------
SvgDeviceContext::SvgDeviceContext() : DeviceContext(SVG_DEVICE_CONTEXT)
{
m_originX = 0;
m_originY = 0;
this->SetBrush(AxNONE, AxSOLID);
this->SetPen(AxNONE, 1, AxSOLID);
m_smuflGlyphs.clear();
m_committed = false;
m_vrvTextFont = false;
m_vrvTextFontFallback = false;
m_mmOutput = false;
m_svgBoundingBoxes = false;
m_svgViewBox = false;
m_html5 = false;
m_formatRaw = false;
m_removeXlink = false;
m_facsimile = false;
m_indent = 2;
// create the initial SVG element
// width and height need to be set later; these are taken care of in "commit"
m_svgNode = m_svgDoc.append_child("svg");
m_svgNode.append_attribute("version") = "1.1";
m_svgNode.append_attribute("xmlns") = "http://www.w3.org/2000/svg";
m_svgNode.append_attribute("xmlns:xlink") = "http://www.w3.org/1999/xlink";
m_svgNode.append_attribute("xmlns:mei") = "http://www.music-encoding.org/ns/mei";
m_svgNode.append_attribute("overflow") = "visible";
// start the stack
m_svgNodeStack.push_back(m_svgNode);
m_currentNode = m_svgNode;
m_outdata.clear();
m_glyphPostfixId = Object::GenerateHashID();
}
SvgDeviceContext::~SvgDeviceContext() {}
bool SvgDeviceContext::CopyFileToStream(const std::string &filename, std::ostream &dest)
{
std::ifstream source(filename.c_str(), std::ios::binary);
dest << source.rdbuf();
source.close();
return true;
}
SvgDeviceContext::GlyphRef::GlyphRef(const Glyph *glyph, int count, const std::string &postfix) : m_glyph(glyph)
{
// Add the counter only when necessary (more than one font for that glyph)
if (count == 0) {
m_refId = StringFormat("%s-%s", glyph->GetCodeStr().c_str(), postfix.c_str());
}
else {
m_refId = StringFormat("%s-%d-%s", glyph->GetCodeStr().c_str(), count, postfix.c_str());
}
};
const std::string SvgDeviceContext::InsertGlyphRef(const Glyph *glyph)
{
const std::string code = glyph->GetCodeStr();
// We have already used this glyph
if (m_smuflGlyphs.find(glyph) != m_smuflGlyphs.end()) {
return m_smuflGlyphs.at(glyph).GetRefId();
}
int count;
// This is the first time we have a glyph with this code
if (m_glyphCodeFontCounter.find(code) == m_glyphCodeFontCounter.end()) {
count = 0;
}
// We used it but with another font
else {
count = m_glyphCodeFontCounter[(code)];
}
GlyphRef ref(glyph, count, m_glyphPostfixId);
const std::string id = ref.GetRefId();
m_smuflGlyphs.insert(std::pair<const Glyph *, GlyphRef>(glyph, ref));
m_glyphCodeFontCounter[code] = count + 1;
return id;
}
void SvgDeviceContext::IncludeTextFont(const std::string &fontname, const Resources *resources)
{
assert(resources);
std::string cssContent;
if (m_smuflTextFont == SMUFLTEXTFONT_embedded) {
cssContent = resources->GetCSSFontFor(fontname);
}
else {
std::string versionPath
= (VERSION_DEV) ? "develop" : StringFormat("%d.%d.%d", VERSION_MAJOR, VERSION_MINOR, VERSION_REVISION);
cssContent = StringFormat("@import url(\"https://www.verovio.org/javascript/%s/data/%s.css\");",
versionPath.c_str(), fontname.c_str());
}
pugi::xml_node css = m_svgNode.append_child("style");
css.append_attribute("type") = "text/css";
css.text().set(cssContent.c_str());
}
void SvgDeviceContext::Commit(bool xml_declaration)
{
if (m_committed) {
return;
}
// take care of width/height once userScale is updated
double height = (double)this->GetHeight() * this->GetUserScaleY();
double width = (double)this->GetWidth() * this->GetUserScaleX();
const char *format = "%gpx";
if (m_mmOutput) {
height /= 10;
width /= 10;
format = "%gmm";
}
else {
const auto [baseWidth, baseHeight] = this->GetBaseSize();
if (baseWidth && baseHeight) {
height = baseHeight;
width = baseWidth;
}
else {
height = std::ceil(height);
width = std::ceil(width);
}
}
if (m_svgViewBox) {
m_svgNode.prepend_attribute("viewBox") = StringFormat("0 0 %g %g", width, height).c_str();
}
else {
m_svgNode.prepend_attribute("height") = StringFormat(format, height).c_str();
m_svgNode.prepend_attribute("width") = StringFormat(format, width).c_str();
}
// add the woff2 font if needed
if (m_smuflTextFont != SMUFLTEXTFONT_none) {
const Resources *resources = this->GetResources(true);
// include the selected font
if (m_vrvTextFont && resources) {
this->IncludeTextFont(resources->GetCurrentFont(), resources);
}
// include the fallback font
if (m_vrvTextFontFallback && resources) {
this->IncludeTextFont(resources->GetFallbackFont(), resources);
}
}
// header
if (m_smuflGlyphs.size() > 0) {
pugi::xml_node defs = m_svgNode.prepend_child("defs");
pugi::xml_document sourceDoc;
// for each needed glyph
for (const std::pair<const Glyph *, const SvgDeviceContext::GlyphRef &> entry : m_smuflGlyphs) {
// load the XML as a pugi::xml_document
sourceDoc.load_string(entry.first->GetXML().c_str());
// copy all the nodes inside into the master document
for (pugi::xml_node child = sourceDoc.first_child(); child; child = child.next_sibling()) {
child.attribute("id").set_value(entry.second.GetRefId().c_str());
defs.append_copy(child);
}
}
}
unsigned int output_flags = pugi::format_default | pugi::format_no_declaration;
if (xml_declaration) {
// edit the xml declaration
output_flags = pugi::format_default;
pugi::xml_node decl = m_svgDoc.prepend_child(pugi::node_declaration);
decl.append_attribute("version") = "1.0";
decl.append_attribute("encoding") = "UTF-8";
decl.append_attribute("standalone") = "no";
}
if (m_formatRaw) {
output_flags |= pugi::format_raw;
}
// add description statement
pugi::xml_node desc = m_svgNode.prepend_child("desc");
desc.text().set(StringFormat("Engraved by Verovio %s", GetVersion().c_str()).c_str());
// save the glyph data to m_outdata
std::string indent = (m_indent == -1) ? "\t" : std::string(m_indent, ' ');
m_svgDoc.save(m_outdata, indent.c_str(), output_flags);
m_committed = true;
}
void SvgDeviceContext::StartGraphic(
Object *object, const std::string &gClass, const std::string &gId, GraphicID graphicID, bool prepend)
{
std::string gClassFull = gClass;
if (object->HasAttClass(ATT_TYPED)) {
AttTyped *att = dynamic_cast<AttTyped *>(object);
assert(att);
if (att->HasType()) {
gClassFull.append((gClassFull.empty() ? "" : " ") + att->GetType());
}
}
if (prepend) {
m_currentNode = m_currentNode.prepend_child("g");
}
else {
m_currentNode = m_currentNode.append_child("g");
}
m_svgNodeStack.push_back(m_currentNode);
AppendIdAndClass(gId, object->GetClassName(), gClassFull, graphicID);
AppendAdditionalAttributes(object);
// this sets staffDef styles for lyrics
if (object->Is(STAFF)) {
Staff *staff = vrv_cast<Staff *>(object);
assert(staff);
assert(staff->m_drawingStaffDef);
std::string styleStr;
if (staff->m_drawingStaffDef->HasLyricFam()) {
styleStr.append("font-family:" + staff->m_drawingStaffDef->GetLyricFam() + ";");
}
if (staff->m_drawingStaffDef->HasLyricName()) {
styleStr.append("font-family:" + staff->m_drawingStaffDef->GetLyricName() + ";");
}
if (staff->m_drawingStaffDef->HasLyricStyle()) {
styleStr.append(
"font-style:" + staff->AttTyped::FontstyleToStr(staff->m_drawingStaffDef->GetLyricStyle()) + ";");
}
if (staff->m_drawingStaffDef->HasLyricWeight()) {
styleStr.append(
"font-weight:" + staff->AttTyped::FontweightToStr(staff->m_drawingStaffDef->GetLyricWeight()) + ";");
}
if (!styleStr.empty()) m_currentNode.append_attribute("style") = styleStr.c_str();
}
if (object->HasAttClass(ATT_COLOR)) {
AttColor *att = dynamic_cast<AttColor *>(object);
assert(att);
if (att->HasColor()) {
m_currentNode.append_attribute("color") = att->GetColor().c_str();
m_currentNode.append_attribute("fill") = att->GetColor().c_str();
}
}
if (object->HasAttClass(ATT_LABELLED)) {
AttLabelled *att = dynamic_cast<AttLabelled *>(object);
assert(att);
if (att->HasLabel()) {
pugi::xml_node svgTitle = m_currentNode.prepend_child("title");
svgTitle.append_attribute("class") = "labelAttr";
svgTitle.text().set(att->GetLabel().c_str());
}
}
if (object->HasAttClass(ATT_LANG)) {
AttLang *att = dynamic_cast<AttLang *>(object);
assert(att);
if (att->HasLang()) {
m_currentNode.append_attribute("xml:lang") = att->GetLang().c_str();
}
}
if (object->HasAttClass(ATT_TYPOGRAPHY)) {
AttTypography *att = dynamic_cast<AttTypography *>(object);
assert(att);
if (att->HasFontname()) m_currentNode.append_attribute("font-family") = att->GetFontname().c_str();
if (att->HasFontstyle())
m_currentNode.append_attribute("font-style") = att->FontstyleToStr(att->GetFontstyle()).c_str();
if (att->HasFontweight())
m_currentNode.append_attribute("font-weight") = att->FontweightToStr(att->GetFontweight()).c_str();
}
if (object->HasAttClass(ATT_VISIBILITY)) {
AttVisibility *att = dynamic_cast<AttVisibility *>(object);
assert(att);
if (att->HasVisible()) {
if (att->GetVisible() == BOOLEAN_true) {
m_currentNode.append_attribute("visibility") = "visible";
}
else if (att->GetVisible() == BOOLEAN_false) {
m_currentNode.append_attribute("visibility") = "hidden";
}
}
}
if (object->HasAttClass(ATT_LINKING)) {
AttLinking *att = dynamic_cast<AttLinking *>(object);
assert(att);
if (att->HasFollows()) {
m_currentNode.append_attribute("mei:follows") = att->GetFollows().c_str();
}
if (att->HasPrecedes()) {
m_currentNode.append_attribute("mei:precedes") = att->GetPrecedes().c_str();
}
}
// m_currentNode.append_attribute("style") = StringFormat("stroke: #%s; stroke-opacity: %f; fill: #%s; fill-opacity:
// %f;",
// this->GetColor(currentPen.GetColor()).c_str(), currentPen.GetOpacity(),
// this->GetColor(currentBrush.GetColor()).c_str(), currentBrush.GetOpacity()).c_str();
}
void SvgDeviceContext::StartCustomGraphic(const std::string &name, std::string gClass, std::string gId)
{
m_currentNode = m_currentNode.append_child("g");
m_svgNodeStack.push_back(m_currentNode);
AppendIdAndClass(gId, name, gClass);
}
void SvgDeviceContext::StartTextGraphic(Object *object, const std::string &gClass, const std::string &gId)
{
m_currentNode = AddChild("tspan");
m_svgNodeStack.push_back(m_currentNode);
AppendIdAndClass(gId, object->GetClassName(), gClass);
AppendAdditionalAttributes(object);
if (object->HasAttClass(ATT_COLOR)) {
AttColor *att = dynamic_cast<AttColor *>(object);
assert(att);
if (att->HasColor()) m_currentNode.append_attribute("fill") = att->GetColor().c_str();
}
if (object->HasAttClass(ATT_LABELLED)) {
AttLabelled *att = dynamic_cast<AttLabelled *>(object);
assert(att);
if (att->HasLabel()) {
pugi::xml_node svgTitle = m_currentNode.prepend_child("title");
svgTitle.append_attribute("class") = "labelAttr";
svgTitle.text().set(att->GetLabel().c_str());
}
}
if (object->HasAttClass(ATT_LANG)) {
AttLang *att = dynamic_cast<AttLang *>(object);
assert(att);
if (att->HasLang()) {
m_currentNode.append_attribute("xml:lang") = att->GetLang().c_str();
}
}
if (object->HasAttClass(ATT_TYPOGRAPHY)) {
AttTypography *att = dynamic_cast<AttTypography *>(object);
assert(att);
if (att->HasFontname()) m_currentNode.append_attribute("font-family") = att->GetFontname().c_str();
if (att->HasFontstyle())
m_currentNode.append_attribute("font-style") = att->FontstyleToStr(att->GetFontstyle()).c_str();
if (att->HasFontweight())
m_currentNode.append_attribute("font-weight") = att->FontweightToStr(att->GetFontweight()).c_str();
}
if (object->HasAttClass(ATT_WHITESPACE)) {
AttWhitespace *att = dynamic_cast<AttWhitespace *>(object);
assert(att);
if (att->HasSpace()) {
m_currentNode.append_attribute("xml:space") = att->GetSpace().c_str();
;
}
}
}
void SvgDeviceContext::ResumeGraphic(Object *object, std::string gId)
{
std::string xpathPrefix = m_html5 ? "//g[@data-id=\"" : "//g[@id=\"";
std::string xpath = xpathPrefix + gId + "\"]";
pugi::xpath_node selection = m_currentNode.select_node(xpath.c_str());
if (selection) {
m_currentNode = selection.node();
}
m_svgNodeStack.push_back(m_currentNode);
}
void SvgDeviceContext::EndGraphic(Object *object, View *view)
{
this->DrawSvgBoundingBox(object, view);
m_svgNodeStack.pop_back();
m_currentNode = m_svgNodeStack.back();
}
void SvgDeviceContext::EndCustomGraphic()
{
m_svgNodeStack.pop_back();
m_currentNode = m_svgNodeStack.back();
}
void SvgDeviceContext::SetCustomGraphicColor(const std::string &color)
{
m_currentNode.append_attribute("color") = color.c_str();
m_currentNode.append_attribute("fill") = color.c_str();
}
void SvgDeviceContext::SetCustomGraphicAttributes(const std::string &data, const std::string &value)
{
m_currentNode.append_attribute(("data-" + data).c_str()) = value.c_str();
}
void SvgDeviceContext::EndResumedGraphic(Object *object, View *view)
{
m_svgNodeStack.pop_back();
m_currentNode = m_svgNodeStack.back();
}
void SvgDeviceContext::EndTextGraphic(Object *object, View *view)
{
this->DrawSvgBoundingBox(object, view);
m_svgNodeStack.pop_back();
m_currentNode = m_svgNodeStack.back();
}
void SvgDeviceContext::RotateGraphic(Point const &orig, double angle)
{
if (m_currentNode.attribute("transform")) {
return;
}
m_currentNode.append_attribute("transform") = StringFormat("rotate(%f %d,%d)", angle, orig.x, orig.y).c_str();
}
void SvgDeviceContext::StartPage()
{
// Initialize the flag to false because we want to know if the font needs to be included in the SVG
m_vrvTextFont = false;
m_vrvTextFontFallback = false;
// default styles
if (this->UseGlobalStyling()) {
m_currentNode = m_currentNode.append_child("style");
m_currentNode.append_attribute("type") = "text/css";
m_currentNode.text().set("g.page-margin{font-family:Times,serif;} "
//"g.page-margin{background: pink;} "
//"g.bounding-box{stroke:red; stroke-width:10} "
//"g.content-bounding-box{stroke:blue; stroke-width:10} "
"g.ending, g.fing, g.reh, g.tempo{font-weight:bold;} g.dir, g.dynam, "
"g.mNum{font-style:italic;} g.label{font-weight:normal;}");
m_currentNode = m_svgNodeStack.back();
}
if (!m_css.empty()) {
m_currentNode = m_currentNode.append_child("style");
m_currentNode.append_attribute("type") = "text/css";
m_currentNode.text().set(m_css.c_str());
m_currentNode = m_svgNodeStack.back();
}
// a graphic for definition scaling
m_currentNode = m_currentNode.append_child("svg");
m_svgNodeStack.push_back(m_currentNode);
m_currentNode.append_attribute("class") = "definition-scale";
m_currentNode.append_attribute("color") = "black";
if (this->GetFacsimile()) {
m_currentNode.append_attribute("viewBox")
= StringFormat("0 0 %d %d", this->GetWidth(), this->GetHeight()).c_str();
}
else {
m_currentNode.append_attribute("viewBox") = StringFormat("0 0 %d %d",
int(this->GetWidth() * this->GetViewBoxFactor()), int(this->GetContentHeight() * this->GetViewBoxFactor()))
.c_str();
}
// page rectangle - for debugging
// pugi::xml_node pageRect = m_currentNode.append_child("rect");
// pageRect.append_attribute("fill") = "pink";
// pageRect.append_attribute("height") = StringFormat("%d", this->GetHeight()* DEFINITION_FACTOR).c_str();
// pageRect.append_attribute("width") = StringFormat("%d", this->GetWidth() * DEFINITION_FACTOR).c_str();
// a graphic for the origin
m_currentNode = m_currentNode.append_child("g");
m_svgNodeStack.push_back(m_currentNode);
m_currentNode.append_attribute("class") = "page-margin";
m_currentNode.append_attribute("transform")
= StringFormat("translate(%d, %d)", (int)((double)m_originX), (int)((double)m_originY)).c_str();
// margin rectangle - for debugging
// pugi::xml_node marginRect = m_currentNode.append_child("rect");
// marginRect.append_attribute("fill") = "yellow";
// marginRect.append_attribute("height") = StringFormat("%d", this->GetHeight() * DEFINITION_FACTOR - 2 *
// m_originY).c_str();
// marginRect.append_attribute("width") = StringFormat("%d", this->GetWidth() * DEFINITION_FACTOR - 2
//* m_originX).c_str();
m_pageNode = m_currentNode;
}
void SvgDeviceContext::EndPage()
{
// end page-margin
m_svgNodeStack.pop_back();
// end definition-scale
m_svgNodeStack.pop_back();
// end page-scale
// m_svgNodeStack.pop_back();
m_currentNode = m_svgNodeStack.back();
}
void SvgDeviceContext::SetBackground(int color, int style)
{
// nothing to do, we do not handle Background
}
void SvgDeviceContext::SetBackgroundImage(void *image, double opacity) {}
void SvgDeviceContext::SetBackgroundMode(int mode)
{
// nothing to do, we do not handle Background Mode
}
void SvgDeviceContext::SetTextForeground(int color)
{
m_brushStack.top().SetColor(color); // we use the brush color for text
}
void SvgDeviceContext::SetTextBackground(int color)
{
// nothing to do, we do not handle Text Background Mode
}
void SvgDeviceContext::SetLogicalOrigin(int x, int y)
{
m_originX = -x;
m_originY = -y;
}
Point SvgDeviceContext::GetLogicalOrigin()
{
return Point(m_originX, m_originY);
}
pugi::xml_node SvgDeviceContext::AddChild(std::string name)
{
pugi::xml_node g = m_currentNode.child("g");
if (g) {
return m_currentNode.insert_child_before(name.c_str(), g);
}
else {
return (m_pushBack) ? m_currentNode.prepend_child(name.c_str()) : m_currentNode.append_child(name.c_str());
}
}
void SvgDeviceContext::AppendStrokeLineCap(pugi::xml_node node, const Pen &pen)
{
switch (pen.GetLineCap()) {
case AxCAP_BUTT: node.append_attribute("stroke-linecap") = "butt"; break;
case AxCAP_ROUND: node.append_attribute("stroke-linecap") = "round"; break;
case AxCAP_SQUARE: node.append_attribute("stroke-linecap") = "square"; break;
default: break;
}
}
void SvgDeviceContext::AppendStrokeLineJoin(pugi::xml_node node, const Pen &pen)
{
switch (pen.GetLineJoin()) {
case AxJOIN_ARCS: node.append_attribute("stroke-linejoin") = "arcs"; break;
case AxJOIN_BEVEL: node.append_attribute("stroke-linejoin") = "bevel"; break;
case AxJOIN_MITER: node.append_attribute("stroke-linejoin") = "miter"; break;
case AxJOIN_MITER_CLIP: node.append_attribute("stroke-linejoin") = "miter-clip"; break;
case AxJOIN_ROUND: node.append_attribute("stroke-linejoin") = "round"; break;
default: break;
}
}
void SvgDeviceContext::AppendStrokeDashArray(pugi::xml_node node, const Pen &pen)
{
if (pen.GetDashLength() > 0) {
const int dashLength = pen.GetDashLength();
const int gapLength = (pen.GetGapLength() > 0) ? pen.GetGapLength() : dashLength;
node.append_attribute("stroke-dasharray") = StringFormat("%d %d", dashLength, gapLength).c_str();
}
}
// Drawing methods
void SvgDeviceContext::DrawQuadBezierPath(Point bezier[3])
{
pugi::xml_node pathChild = AddChild("path");
pathChild.append_attribute("d") = StringFormat("M%d,%d Q%d,%d %d,%d", // Base string
bezier[0].x, bezier[0].y, // M Command
bezier[1].x, bezier[1].y, bezier[2].x, bezier[2].y)
.c_str();
pathChild.append_attribute("fill") = "none";
pathChild.append_attribute("stroke") = this->GetColor(m_penStack.top().GetColor()).c_str();
pathChild.append_attribute("stroke-linecap") = "round";
pathChild.append_attribute("stroke-linejoin") = "round";
pathChild.append_attribute("stroke-width") = m_penStack.top().GetWidth();
this->AppendStrokeDashArray(pathChild, m_penStack.top());
}
void SvgDeviceContext::DrawCubicBezierPath(Point bezier[4])
{
pugi::xml_node pathChild = AddChild("path");
pathChild.append_attribute("d") = StringFormat("M%d,%d C%d,%d %d,%d %d,%d", // Base string
bezier[0].x, bezier[0].y, // M Command
bezier[1].x, bezier[1].y, bezier[2].x, bezier[2].y, bezier[3].x, bezier[3].y // Remaining bezier points.
)
.c_str();
pathChild.append_attribute("fill") = "none";
pathChild.append_attribute("stroke") = this->GetColor(m_penStack.top().GetColor()).c_str();
pathChild.append_attribute("stroke-linecap") = "round";
pathChild.append_attribute("stroke-linejoin") = "round";
pathChild.append_attribute("stroke-width") = m_penStack.top().GetWidth();
this->AppendStrokeDashArray(pathChild, m_penStack.top());
}
void SvgDeviceContext::DrawCubicBezierPathFilled(Point bezier1[4], Point bezier2[4])
{
pugi::xml_node pathChild = AddChild("path");
pathChild.append_attribute("d")
= StringFormat("M%d,%d C%d,%d %d,%d %d,%d C%d,%d %d,%d %d,%d", bezier1[0].x, bezier1[0].y, // M command
bezier1[1].x, bezier1[1].y, bezier1[2].x, bezier1[2].y, bezier1[3].x, bezier1[3].y, // First bezier
bezier2[2].x, bezier2[2].y, bezier2[1].x, bezier2[1].y, bezier2[0].x, bezier2[0].y // Second Bezier
)
.c_str();
// pathChild.append_attribute("fill") = "currentColor";
// pathChild.append_attribute("fill-opacity") = "1";
pathChild.append_attribute("stroke") = this->GetColor(m_penStack.top().GetColor()).c_str();
pathChild.append_attribute("stroke-linecap") = "round";
pathChild.append_attribute("stroke-linejoin") = "round";
// pathChild.append_attribute("stroke-opacity") = "1";
pathChild.append_attribute("stroke-width") = m_penStack.top().GetWidth();
}
void SvgDeviceContext::DrawCircle(int x, int y, int radius)
{
this->DrawEllipse(x - radius, y - radius, 2 * radius, 2 * radius);
}
void SvgDeviceContext::DrawEllipse(int x, int y, int width, int height)
{
assert(m_penStack.size());
assert(m_brushStack.size());
Pen currentPen = m_penStack.top();
Brush currentBrush = m_brushStack.top();
int rh = height / 2;
int rw = width / 2;
pugi::xml_node ellipseChild = AddChild("ellipse");
ellipseChild.append_attribute("cx") = x + rw;
ellipseChild.append_attribute("cy") = y + rh;
ellipseChild.append_attribute("rx") = rw;
ellipseChild.append_attribute("ry") = rh;
if (currentBrush.GetOpacity() != 1.0) ellipseChild.append_attribute("fill-opacity") = currentBrush.GetOpacity();
if (currentPen.GetOpacity() != 1.0) ellipseChild.append_attribute("stroke-opacity") = currentPen.GetOpacity();
if (currentPen.GetWidth() > 0) {
ellipseChild.append_attribute("stroke-width") = currentPen.GetWidth();
ellipseChild.append_attribute("stroke") = this->GetColor(m_penStack.top().GetColor()).c_str();
}
}
void SvgDeviceContext::DrawEllipticArc(int x, int y, int width, int height, double start, double end)
{
/*
Draws an arc of an ellipse. The current pen is used for drawing the arc
and the current brush is used for drawing the pie. This function is
currently only available for X window and PostScript device contexts.
x and y specify the x and y coordinates of the upper-left corner of the
rectangle that contains the ellipse.
width and height specify the width and height of the rectangle that
contains the ellipse.
start and end specify the start and end of the arc relative to the
three-o'clock position from the center of the rectangle. Angles are
specified in degrees (360 is a complete circle). Positive values mean
counter-clockwise motion. If start is equal to end, a complete ellipse
will be drawn. */
// known bug: SVG draws with the current pen along the radii, but this does not happen in wxMSW
assert(m_penStack.size());
assert(m_brushStack.size());
Pen currentPen = m_penStack.top();
Brush currentBrush = m_brushStack.top();
std::string s;
// radius
double rx = width / 2;
double ry = height / 2;
// center
double xc = x + rx;
double yc = y + ry;
double xs, ys, xe, ye;
xs = xc + rx * cos(DegToRad(start));
xe = xc + rx * cos(DegToRad(end));
ys = yc - ry * sin(DegToRad(start));
ye = yc - ry * sin(DegToRad(end));
/// now same as circle arc...
double theta1 = atan2(ys - yc, xs - xc);
double theta2 = atan2(ye - yc, xe - xc);
// flag for large or small arc 0 means less than 180 degrees
int fArc = ((theta2 - theta1) > 0) ? 1 : 0;
int fSweep = (fabs(theta2 - theta1) > M_PI) ? 1 : 0;
pugi::xml_node pathChild = AddChild("path");
pathChild.append_attribute("d") = StringFormat(
"M%d %d A%d %d 0.0 %d %d %d %d", int(xs), int(ys), abs(int(rx)), abs(int(ry)), fArc, fSweep, int(xe), int(ye))
.c_str();
// pathChild.append_attribute("fill") = "currentColor";
if (currentBrush.GetOpacity() != 1.0) pathChild.append_attribute("fill-opacity") = currentBrush.GetOpacity();
if (currentPen.GetOpacity() != 1.0) pathChild.append_attribute("stroke-opacity") = currentPen.GetOpacity();
if (currentPen.GetWidth() > 0) {
pathChild.append_attribute("stroke-width") = currentPen.GetWidth();
pathChild.append_attribute("stroke") = this->GetColor(m_penStack.top().GetColor()).c_str();
}
}
void SvgDeviceContext::DrawLine(int x1, int y1, int x2, int y2)
{
pugi::xml_node pathChild = AddChild("path");
pathChild.append_attribute("d") = StringFormat("M%d %d L%d %d", x1, y1, x2, y2).c_str();
pathChild.append_attribute("stroke") = this->GetColor(m_penStack.top().GetColor()).c_str();
if (m_penStack.top().GetWidth() > 1) pathChild.append_attribute("stroke-width") = m_penStack.top().GetWidth();
this->AppendStrokeLineCap(pathChild, m_penStack.top());
this->AppendStrokeDashArray(pathChild, m_penStack.top());
}
void SvgDeviceContext::DrawPolyline(int n, Point points[], int xOffset, int yOffset)
{
assert(m_penStack.size());
const Pen ¤tPen = m_penStack.top();
pugi::xml_node polylineChild = AddChild("polyline");
if (currentPen.GetWidth() > 0) {
polylineChild.append_attribute("stroke") = this->GetColor(currentPen.GetColor()).c_str();
}
if (currentPen.GetWidth() > 1) {
polylineChild.append_attribute("stroke-width") = StringFormat("%d", currentPen.GetWidth()).c_str();
}
if (currentPen.GetOpacity() != 1.0) {
polylineChild.append_attribute("stroke-opacity") = StringFormat("%f", currentPen.GetOpacity()).c_str();
}
this->AppendStrokeLineCap(polylineChild, currentPen);
this->AppendStrokeLineJoin(polylineChild, currentPen);
this->AppendStrokeDashArray(polylineChild, currentPen);
if (n > 2) polylineChild.append_attribute("fill") = "none";
std::string pointsString;
for (int i = 0; i < n; ++i) {
pointsString += StringFormat("%d,%d ", points[i].x + xOffset, points[i].y + yOffset);
}
polylineChild.append_attribute("points") = pointsString.c_str();
}
void SvgDeviceContext::DrawPolygon(int n, Point points[], int xOffset, int yOffset)
{
assert(m_penStack.size());
assert(m_brushStack.size());
const Pen ¤tPen = m_penStack.top();
const Brush ¤tBrush = m_brushStack.top();
pugi::xml_node polygonChild = AddChild("polygon");
if (currentPen.GetWidth() > 0) {
polygonChild.append_attribute("stroke") = this->GetColor(currentPen.GetColor()).c_str();
}
if (currentPen.GetWidth() > 1) {
polygonChild.append_attribute("stroke-width") = StringFormat("%d", currentPen.GetWidth()).c_str();
}
if (currentPen.GetOpacity() != 1.0) {
polygonChild.append_attribute("stroke-opacity") = StringFormat("%f", currentPen.GetOpacity()).c_str();
}
this->AppendStrokeLineJoin(polygonChild, currentPen);
this->AppendStrokeDashArray(polygonChild, currentPen);
if (currentBrush.GetColor() != AxNONE)
polygonChild.append_attribute("fill") = this->GetColor(currentBrush.GetColor()).c_str();
if (currentBrush.GetOpacity() != 1.0)
polygonChild.append_attribute("fill-opacity") = StringFormat("%f", currentBrush.GetOpacity()).c_str();
std::string pointsString = StringFormat("%d,%d", points[0].x + xOffset, points[0].y + yOffset);
for (int i = 1; i < n; ++i) {
pointsString += " " + StringFormat("%d,%d", points[i].x + xOffset, points[i].y + yOffset);
}
polygonChild.append_attribute("points") = pointsString.c_str();
}
void SvgDeviceContext::DrawRectangle(int x, int y, int width, int height)
{
this->DrawRoundedRectangle(x, y, width, height, 0);
}
void SvgDeviceContext::DrawRoundedRectangle(int x, int y, int width, int height, int radius)
{
pugi::xml_node rectChild = AddChild("rect");
if (m_penStack.size()) {
Pen currentPen = m_penStack.top();
if (currentPen.GetWidth() > 0)
rectChild.append_attribute("stroke") = this->GetColor(currentPen.GetColor()).c_str();
if (currentPen.GetWidth() > 1)
rectChild.append_attribute("stroke-width") = StringFormat("%d", currentPen.GetWidth()).c_str();
if (currentPen.GetOpacity() != 1.0)
rectChild.append_attribute("stroke-opacity") = StringFormat("%f", currentPen.GetOpacity()).c_str();
}
if (m_brushStack.size()) {
Brush currentBrush = m_brushStack.top();
if (currentBrush.GetColor() != AxNONE)
rectChild.append_attribute("fill") = this->GetColor(currentBrush.GetColor()).c_str();
if (currentBrush.GetOpacity() != 1.0)
rectChild.append_attribute("fill-opacity") = StringFormat("%f", currentBrush.GetOpacity()).c_str();
}
// negative heights or widths are not allowed in SVG
if (height < 0) {
height = -height;
y -= height;
}
if (width < 0) {
width = -width;
x -= width;
}
rectChild.append_attribute("x") = x;
rectChild.append_attribute("y") = y;
rectChild.append_attribute("height") = height;
rectChild.append_attribute("width") = width;
if (radius != 0) rectChild.append_attribute("rx") = radius;
}
void SvgDeviceContext::StartText(int x, int y, data_HORIZONTALALIGNMENT alignment)
{
std::string s;
std::string anchor;
if (alignment == HORIZONTALALIGNMENT_right) {
anchor = "end";
}
if (alignment == HORIZONTALALIGNMENT_center) {
anchor = "middle";
}
m_currentNode = m_currentNode.append_child("text");
m_svgNodeStack.push_back(m_currentNode);
if (x) m_currentNode.append_attribute("x") = x;
if (y) m_currentNode.append_attribute("y") = y;
// unless dx, dy have a value they don't need to be set
// m_currentNode.append_attribute("dx") = 0;
// m_currentNode.append_attribute("dy") = 0;
if (!anchor.empty()) {
m_currentNode.append_attribute("text-anchor") = anchor.c_str();
}
// font-size seems to be required in <text> in FireFox and also we set it to 0px so space
// is not added between tspan elements
m_currentNode.append_attribute("font-size") = "0px";
//
if (!m_fontStack.top()->GetFaceName().empty()) {
m_currentNode.append_attribute("font-family") = m_fontStack.top()->GetFaceName().c_str();
}
if (m_fontStack.top()->GetStyle() != FONTSTYLE_NONE) {
if (m_fontStack.top()->GetStyle() == FONTSTYLE_italic) {
m_currentNode.append_attribute("font-style") = "italic";
}
else if (m_fontStack.top()->GetStyle() == FONTSTYLE_normal) {
m_currentNode.append_attribute("font-style") = "normal";
}
else if (m_fontStack.top()->GetStyle() == FONTSTYLE_oblique) {
m_currentNode.append_attribute("font-style") = "oblique";
}
}
if (m_fontStack.top()->GetWeight() != FONTWEIGHT_NONE) {
if (m_fontStack.top()->GetWeight() == FONTWEIGHT_bold) {
m_currentNode.append_attribute("font-weight") = "bold";
}
}
}
void SvgDeviceContext::MoveTextTo(int x, int y, data_HORIZONTALALIGNMENT alignment)
{
m_currentNode.append_attribute("x") = x;
m_currentNode.append_attribute("y") = y;
if (alignment != HORIZONTALALIGNMENT_NONE) {
std::string anchor = "start";
if (alignment == HORIZONTALALIGNMENT_right) {
anchor = "end";
}
if (alignment == HORIZONTALALIGNMENT_center) {
anchor = "middle";
}
m_currentNode.append_attribute("text-anchor") = anchor.c_str();
}
}
void SvgDeviceContext::MoveTextVerticallyTo(int y)
{
m_currentNode.append_attribute("y") = y;
}
void SvgDeviceContext::EndText()
{
m_svgNodeStack.pop_back();
m_currentNode = m_svgNodeStack.back();
}
// draw text element with optional parameters to specify the bounding box of the text
// if the bounding box is specified then append a rect child
void SvgDeviceContext::DrawText(
const std::string &text, const std::u32string &wtext, int x, int y, int width, int height)
{
assert(m_fontStack.top());
std::string svgText = text;
// Because IE does not support xml:space="preserve", we need to replace the initial
// space with a non breakable space
if ((svgText.length() > 0) && (svgText[0] == ' ')) {
svgText.replace(0, 1, "\xC2\xA0");
}
if ((svgText.length() > 0) && (svgText[svgText.size() - 1] == ' ')) {
svgText.replace(svgText.size() - 1, 1, "\xC2\xA0");
}
pugi::xpath_node fontNode = m_currentNode.select_node("ancestor::*[@font-family][1]");
std::string currentFaceName = (fontNode) ? fontNode.node().attribute("font-family").value() : "";
std::string fontFaceName = m_fontStack.top()->GetFaceName();
pugi::xml_node textChild = AddChild("tspan");
// We still add @xml:space (No: this seems to create problems with Safari)
// textChild.append_attribute("xml:space") = "preserve";
// Set the @font-family only if it is not the same as in the parent node
if (!fontFaceName.empty() && (fontFaceName != currentFaceName)) {
// Special case where we want to specifiy if the woff2 font needs to be included in the output
if (m_fontStack.top()->GetSmuflFont() != SMUFL_NONE) {
if (m_fontStack.top()->GetSmuflFont() == SMUFL_FONT_FALLBACK) {
this->VrvTextFontFallback();
textChild.append_attribute("font-family") = "Leipzig";
}
else {
this->VrvTextFont();
textChild.append_attribute("font-family") = m_fontStack.top()->GetFaceName().c_str();
}
if (m_fontStack.top()->GetStyle() == FONTSTYLE_normal) {
textChild.append_attribute("font-style") = "normal";
}
}
else {
textChild.append_attribute("font-family") = m_fontStack.top()->GetFaceName().c_str();
}
}
if (m_fontStack.top()->GetPointSize() != 0) {
textChild.append_attribute("font-size") = StringFormat("%dpx", m_fontStack.top()->GetPointSize()).c_str();