//axis aligned circle for setting up brushes for thick lines
void rs_gdImageCircleForBrush(gdImagePtr im, int x, int y, int rad, RS_Color& color)
{
int gdc = ConvertColor(im, color);
float rad2 = (float)rad*rad;
for (int j = -rad, k = y+j; j <= rad; j++, k++)
{
float j_offset = j + 0.5f;
float hlen = sqrt(rad2 - j_offset*j_offset);
int solidwid = (int)hlen;
if (solidwid)
gdImageLine(im, x-solidwid, k, x+solidwid-1, k, gdc);
float aalpha = hlen - solidwid;
RS_Color ac = color;
ac.alpha() = (int)(ac.alpha() * aalpha);
int gdc2 = ConvertColor(im, ac);
gdImageSetPixel(im, x-solidwid-1, k, gdc2);
gdImageSetPixel(im, x+solidwid, k, gdc2);
}
}
gdImagePtr rs_gdImageThickLineBrush(int line_weight, RS_Color& color)
{
if (line_weight % 2 == 1)
line_weight += 1;
int sx = line_weight;
int sy = line_weight;
gdImagePtr brush = gdImageCreateTrueColor(sx, sy);
int transparent = gdImageColorAllocateAlpha(brush, 0, 0, 0, 127);
gdImageAlphaBlending(brush, 0);
gdImageFilledRectangle(brush, 0, 0, sx, sy, transparent);
//compute fractional alpha value for antialiasing effect
//each pixel should be hit by line_weight / 2 number of circles
//so the alpha is computed as 255 / line_weight * 2
RS_Color falpha = color;
falpha.alpha() = falpha.alpha() / line_weight * 2 + 1;
falpha.alpha() = (falpha.alpha() < 255)? falpha.alpha() : 255;
//outer transparent circle -- for antialiased effect
rs_gdImageCircleForBrush(brush, sx/2, sy/2, line_weight / 2, falpha);
gdImageAlphaBlending(brush, 1);
//inner non-transparent circle
rs_gdImageCircleForBrush(brush, sx/2, sy/2, (line_weight - 2) / 2, color);
return brush;
}
/**
* Sets the color shown in the combobox to the given color.
*/
void QG_ColorBox::setColor(const RS_Color& color) {
currentColor = color;
if (color.isByLayer() && showByLayer) {
setCurrentItem(0);
} else if (color.isByBlock() && showByLayer) {
setCurrentItem(1);
} else if (color==Qt::red) {
setCurrentItem(0+(int)showByLayer*2 + (int)showUnchanged);
} else if (color==Qt::yellow) {
setCurrentItem(1+(int)showByLayer*2 + (int)showUnchanged);
} else if (color==Qt::green) {
setCurrentItem(2+(int)showByLayer*2 + (int)showUnchanged);
} else if (color==Qt::cyan) {
setCurrentItem(3+(int)showByLayer*2 + (int)showUnchanged);
} else if (color==Qt::blue) {
setCurrentItem(4+(int)showByLayer*2 + (int)showUnchanged);
} else if (color==Qt::magenta) {
setCurrentItem(5+(int)showByLayer*2 + (int)showUnchanged);
} else if (color==Qt::white || color==Qt::black) {
setCurrentItem(6+(int)showByLayer*2 + (int)showUnchanged);
} else if (color==Qt::gray) {
setCurrentItem(7+(int)showByLayer*2 + (int)showUnchanged);
} else if (color==QColor(191,191,191)) {
setCurrentItem(8+(int)showByLayer*2 + (int)showUnchanged);
} else {
setCurrentItem(9+(int)showByLayer*2 + (int)showUnchanged);
}
if (currentItem()!=9+(int)showByLayer*2 + (int)showUnchanged) {
slotColorChanged(currentItem());
}
}
void Doc_plugin_interface::getCurrentLayerProperties(QColor *c, DPI::LineWidth *w, DPI::LineType *t){
RS_Pen pen = docGr->getActiveLayer()->getPen();
RS_Color col = pen.getColor();
c->setRgb(col.red(), col.green(), col.blue());
*w = static_cast<DPI::LineWidth>(pen.getWidth());
*t = static_cast<DPI::LineType>(pen.getLineType());
}
void Doc_plugin_interface::getCurrentLayerProperties(QColor *c, QString *w, QString *t){
RS_Pen pen = docGr->getActiveLayer()->getPen();
RS_Color col = pen.getColor();
c->setRgb(col.red(), col.green(), col.blue());
w->clear();
w->append(Converter.lw2str(pen.getWidth()));
t->clear();
t->append(Converter.lt2str(pen.getLineType()));
}
void RS_GraphicView::setBackground(const RS_Color& bg) {
background = bg;
// bright background:
if (bg.red()+bg.green()+bg.blue()>380) {
foreground = RS_Color(0,0,0);
} else {
foreground = RS_Color(255,255,255);
}
}
int ConvertColor(gdImagePtr i, RS_Color& c)
{
return gdImageColorAllocateAlpha(i, c.red(), c.green(), c.blue(), 127 - c.alpha()/2 );
}
bool GeometryAdapter::EvalColor(const MdfModel::MdfString& exprstr, RS_Color& rscolor)
{
// TODO: needs an expression processor argument to eval expressions
// string is in the form "AARRGGBB"
const wchar_t* scolor = exprstr.c_str();
size_t len = wcslen(scolor);
unsigned int color = 0;
bool isConst = false;
// try to check if the expression is constant
int status = 0;
if (len == 0)
{
// error or a color was not set
// use transparent black which indicates "not set"
rscolor = RS_Color(RS_Color::EMPTY_COLOR_RGBA);
return true;
}
else if (len == 8)
{
status = swscanf(scolor, L"%8X", &color);
}
else if (len == 6)
{
status = swscanf(scolor, L"%6X", &color);
// there was no alpha specified in the constant string, add it
color |= 0xFF000000;
}
if (status != 1)
{
// if not constant try to evaluate as expression
if (!m_exec)
{
_ASSERT(false);
rscolor = RS_Color(0x000000FF);
return true;
}
FdoExpression* expr = ObtainFdoExpression(&exprstr);
// make sure we have a parsed expression
if (!expr)
{
_ASSERT(false);
rscolor = RS_Color(0x000000FF);
return false;
}
try
{
FdoPtr<FdoLiteralValue> lval = m_exec->Evaluate(expr);
color = (unsigned int)ExpressionHelper::GetAsInt32(lval.p);
}
catch (FdoException* e)
{
ProcessStylizerException(e, __LINE__, __WFILE__);
rscolor = RS_Color(0x000000FF);
return false;
}
catch (...)
{
return false;
}
}
else
{
isConst = true;
}
rscolor.alpha() = color >> 24;
rscolor.red() = (color >> 16) & 0xFF;
rscolor.green() = (color >> 8) & 0xFF;
rscolor.blue() = color & 0xFF;
return isConst;
}
