static CGShadingRef CGShadingRefForRadialGradient(const SVGPaintServerRadialGradient* server)
{
CGPoint center = CGPoint(server->gradientCenter());
CGPoint focus = CGPoint(server->gradientFocal());
double radius = server->gradientRadius();
double fdx = focus.x - center.x;
double fdy = focus.y - center.y;
// Spec: If (fx, fy) lies outside the circle defined by (cx, cy) and r, set (fx, fy)
// to the point of intersection of the line through (fx, fy) and the circle.
if (sqrtf(fdx * fdx + fdy * fdy) > radius) {
double angle = atan2(focus.y * 100.0, focus.x * 100.0);
focus.x = cos(angle) * radius;
focus.y = sin(angle) * radius;
}
CGFunctionCallbacks callbacks = {0, cgGradientCallback, NULL};
CGFloat domainLimits[2] = {0, 1};
CGFloat rangeLimits[8] = {0, 1, 0, 1, 0, 1, 0, 1};
CGFunctionRef shadingFunction = CGFunctionCreate((void *)server, 1, domainLimits, 4, rangeLimits, &callbacks);
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
CGShadingRef shading = CGShadingCreateRadial(colorSpace, focus, 0, center, radius, shadingFunction, true, true);
CGColorSpaceRelease(colorSpace);
CGFunctionRelease(shadingFunction);
return shading;
}
static CGShadingRef CGShadingRefForLinearGradient(const SVGPaintServerLinearGradient* server)
{
CGPoint start = CGPoint(server->gradientStart());
CGPoint end = CGPoint(server->gradientEnd());
CGFunctionCallbacks callbacks = {0, cgGradientCallback, NULL};
CGFloat domainLimits[2] = {0, 1};
CGFloat rangeLimits[8] = {0, 1, 0, 1, 0, 1, 0, 1};
CGFunctionRef shadingFunction = CGFunctionCreate((void *)server, 1, domainLimits, 4, rangeLimits, &callbacks);
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
CGShadingRef shading = CGShadingCreateAxial(colorSpace, start, end, shadingFunction, true, true);
CGColorSpaceRelease(colorSpace);
CGFunctionRelease(shadingFunction);
return shading;
}
void TextRenderView::draw()
{
// renders with no background, only text
drawStringWithColorAndFormat(
this->getContent(),
this->getTextColor(),
CGPoint( this->getGlobalBounds().getX() + 10, this->getGlobalBounds().getY() + this->getBounds().getHeight()/2) );
// cerr << "Color Red" << this->getTextColor().getRed() << endl;
// cerr << "should have drawn text" << endl;
callDrawOnSubViews();
}
void TextInputView::draw()
{
// Draw the rect
drawRectWithColor(this->getGlobalBounds(), this->getColor());
// Split up and draw the text based on the size of the rectangle
//
_lines.empty(); // start anew
_lines.resize(0);
string temp = "";
int cnt = 0;
const int maxChars = getMaxCharsPerLine();
const int maxLines = getMaxLines();
for (string::iterator it = _content.begin(); it != _content.end(); ++it)
{
if (_lines.size() >= maxLines )
{
break;
}
temp += (*it);
cnt++;
if (cnt >= maxChars)
{
_lines.push_back(temp);
temp.clear();
cnt = 0;
}
}
// add a cursor if has focus
// Currently the cursor is always at the end,
// this will change when we make it so that the
// position can be set with a mouse click or the
// arrow keys
if ( getHasFocus() )
{
if (temp.length() > 0)
{
temp += "~"; // there is more to push, so stick the cursor on the last line
}
// hell, this seems to work okay visually...
}
_lines.push_back(temp); // push the rest
CGRect bounds = this->getGlobalBounds();
int x = bounds.getX() + 5;
int y = bounds.getY() + 14;
for(vector<string>::iterator it = _lines.begin(); it != _lines.end(); ++it)
{
drawStringWithColorAndFormat(
(*it), this->getTextColor(), CGPoint( x, y), "small fixed");
y += this->getLineSpacing();
}
// Draw the border
if (getHasFocus())
drawBorderWithColor(bounds, CGColor(0.0,0.0,0.6,1.0));
else
drawBorderWithColor(bounds, CGColor(0.0,0.0,0.0,1.0));
// Draw the subviews
this->callDrawOnSubViews();
}
