virtual void onDraw(SkCanvas* canvas) {
#ifdef SK_BUILD_FOR_MAC
CGContextRef cg = 0;
{
SkImageInfo info;
size_t rowBytes;
const void* addr = canvas->peekPixels(&info, &rowBytes);
if (addr) {
cg = makeCG(info, addr, rowBytes);
}
}
#endif
drawGrad(canvas);
const SkColor fg[] = {
0xFFFFFFFF,
0xFFFFFF00, 0xFFFF00FF, 0xFF00FFFF,
0xFFFF0000, 0xFF00FF00, 0xFF0000FF,
0xFF000000,
};
const char* text = "Hamburgefons";
size_t len = strlen(text);
SkPaint paint;
setFont(&paint, "Times");
paint.setTextSize(SkIntToScalar(16));
paint.setAntiAlias(true);
paint.setLCDRenderText(true);
SkScalar x = SkIntToScalar(10);
for (size_t i = 0; i < SK_ARRAY_COUNT(fg); ++i) {
paint.setColor(fg[i]);
SkScalar y = SkIntToScalar(40);
SkScalar stopy = SkIntToScalar(HEIGHT);
while (y < stopy) {
if (true) {
canvas->drawText(text, len, x, y, paint);
}
#ifdef SK_BUILD_FOR_MAC
else {
cgDrawText(cg, text, len, SkScalarToFloat(x),
static_cast<float>(HEIGHT) - SkScalarToFloat(y),
paint);
}
#endif
y += paint.getTextSize() * 2;
}
x += SkIntToScalar(1024) / SK_ARRAY_COUNT(fg);
}
#ifdef SK_BUILD_FOR_MAC
CGContextRelease(cg);
#endif
}
void CGLabel::paint(cairo_t *cr)
{
CGFrame::paint(cr);
float offx=m_textOffset;
float offy=m_textOffset;
if (m_horizontalAlignment!=cgalLeft) offx=0;
if (m_verticalAlignment!=cgalTop) offy=0;
//drawText(cr, m_border+offx, m_border+offy, m_width-m_frameWidth*2-offx*2, m_height-m_frameWidth*2-offy*2, m_text);
cgDrawText(cr, m_border+offx, m_border+offy, m_width-m_frameWidth*2-offx*2, m_height-m_frameWidth*2-offy*2, m_text, m_fontFace, m_fontSize, m_italic, m_bold, m_textColor, m_lineSpacing, m_horizontalAlignment, m_verticalAlignment);
}
void CGMarqueeLabel::paint(cairo_t *c)
{
CGFrame::paint(c);
cairo_save(c);
cairo_translate(c, m_border, m_border);
cairo_rectangle(c, 0,0, m_width-2.0*m_border, m_height-2.0*m_border);
cairo_clip (c);
if (m_text!=m_lastCalcText) {
m_lastCalcWidth=cgSingleLineTextExtent(c, m_text, m_fontFace, m_fontSize, m_italic, m_bold).width;
}
int deltaMS=std::chrono::duration_cast<std::chrono::duration<float,std::milli> >(std::chrono::steady_clock::now() - m_start).count();
if (deltaMS>m_stepDurationMS) {
m_start=std::chrono::steady_clock::now();
if (m_lastCalcWidth>(long)m_width) {
m_lastOffset = m_lastOffset + m_lastDirection*std::max<int>(1, ceil(float(deltaMS)/float(m_stepDurationMS)));
if (m_lastOffset>15 || m_lastOffset<-fabs(m_lastCalcWidth-m_width)-15) {
m_lastDirection=-1*m_lastDirection;
}
//std::cout<<" SET m_lastOffset="<<m_lastOffset<<"\n\n";
} else {
m_lastOffset=0;
//std::cout<<" RESET m_lastOffset="<<m_lastOffset<<"\n\n";
}
}
//std::cout<<"deltaMS="<<deltaMS<<" m_stepDurationMS="<<m_stepDurationMS<<" m_lastOffset="<<m_lastOffset<<" m_lastDirection="<<m_lastDirection<<" m_lastCalcWidth="<<m_lastCalcWidth<<" m_width="<<m_width<<"\n";
float offx=m_textOffset;
float offy=m_textOffset;
if (m_horizontalAlignment!=cgalLeft) offx=0;
if (m_verticalAlignment!=cgalTop) offy=0;
//drawText(cr, m_border+offx, m_border+offy, m_width-m_frameWidth*2-offx*2, m_height-m_frameWidth*2-offy*2, m_text);
cairo_save(c);
cairo_translate(c, m_lastOffset, 0);
cgDrawText(c, offx, offy, m_width-m_frameWidth*2-offx*2, m_height-m_frameWidth*2-offy*2, m_text, m_fontFace, m_fontSize, m_italic, m_bold, m_textColor, m_lineSpacing, m_horizontalAlignment, m_verticalAlignment);
cairo_restore(c);
cairo_restore(c);
}
