void writeBit(uint8_t bit){
//Pull line low for 1uS
pullLineLow();
delayUs(1);
//If we want to write 1, release the line (if not will keep low)
if(bit) {
releaseLine();
}
//Wait for 60uS and release the line
delayUs(60);
releaseLine();
}
uint32_t reset(){
uint32_t i;
//Pull line low and wait for 480uS
pullLineLow();
delayUs(480);
//Release line and wait for 60uS
releaseLine();
delayUs(60);
//Store line value and wait until the completion of 480uS period
i = readLineState();
delayUs(420);
//Return the value read from the presence pulse (0=OK, 1=WRONG)
return i;
}
uint8_t readBit(void){
uint8_t bit = 0;
//Pull line low for 1uS
pullLineLow();
delayUs(1);
//Release line and wait for 14uS
releaseLine();
delayUs(14);
//Read line value
if(readLineState()){
bit=1;
}
//Wait for 45uS to end and return read value
delayUs(45);
return bit;
}
void EmacsLinePtr::newLine()
{
releaseLine();
m_line = EMACS_NEW EmacsLine;
}
void wyBitmapFontLabel::updateContentSize() {
// remove all quads in all atlas
wyArrayEach(m_atlasList, clearAtlas, NULL);
// if null, do nothing
if(!m_text)
return;
// break line into a vector
vector<const char*>* lines = wyUtils::breakLines(m_text, m_font, m_lineWidth, m_spaceWidth, m_tabSize);
// get width first because we need support text alignment
vector<float>* widthList = measureWidth(lines);
// get max width
float maxWidth = 0;
for(vector<float>::iterator iter = widthList->begin(); iter != widthList->end(); iter++) {
maxWidth = MAX(maxWidth, *iter);
}
// line number
int line = 0;
// real width of final render
float width = 0;
// final render y position
float y = 0;
// prev line height
float prevLineHeight = 0;
// render line one by one
for(vector<const char*>::iterator iter = lines->begin(); iter != lines->end(); iter++, line++) {
char* p = (char*)(*iter);
float x = 0;
float lineOffset = 0;
float charWidth, charHeight;
bool firstLineChar = true;
float currentLineHeight = 0;
// line offset
switch(m_alignment) {
case LEFT:
lineOffset = 0;
break;
case CENTER:
lineOffset = (maxWidth - widthList->at(line)) / 2;
break;
case RIGHT:
lineOffset = maxWidth - widthList->at(line);
break;
}
// if first char of this line, add line spacing
if(line > 0) {
y += m_lineSpacing;
if(prevLineHeight == 0)
y += m_font->getEmptyLineHeight();
else
y += prevLineHeight;
}
while(*p != 0) {
// get char integer
int c = 0;
int b = wyUtils::getUTF8Bytes(*p);
while(b-- > 0) {
c <<= 8;
c |= *p & 0xff;
p++;
}
wyCharInfo* pCi = m_font->getCharInfo(c);
if(pCi) {
// get char size
charWidth = pCi->texRect.width;
charHeight = pCi->texRect.height;
// if not first char of line, add left padding
if(!firstLineChar) {
x += pCi->left;
}
// choose max height as line height
currentLineHeight = m_lineHeight > 0 ? m_lineHeight : MAX(currentLineHeight, charHeight + pCi->top);
// get atlas
wyTextureAtlas* atlas = (wyTextureAtlas*)wyArrayGet(m_atlasList, pCi->page);
// get vertex corner
float left = x + lineOffset;
float right = left + charWidth;
float top = -y - pCi->top;
float bottom = top - charHeight;
// build vertex
wyQuad3D v;
v.bl_x = left;
v.bl_y = bottom;
v.bl_z = 0.0f;
v.br_x = right;
v.br_y = bottom;
v.br_z = 0.0f;
v.tl_x = left;
v.tl_y = top;
v.tl_z = 0.0f;
v.tr_x = right;
v.tr_y = top;
v.tr_z = 0.0f;
// build texture coordinates
wyQuad2D t;
wyTexture2D* tex = m_font->getTexture(pCi->page);
left = pCi->texRect.x / tex->getPixelWidth();
right = (pCi->texRect.x + charWidth) / tex->getPixelWidth();
top = pCi->texRect.y / tex->getPixelHeight();
bottom = (pCi->texRect.y + charHeight) / tex->getPixelHeight();
t.bl_x = left;
t.bl_y = bottom;
t.br_x = right;
t.br_y = bottom;
t.tl_x = left;
t.tl_y = top;
t.tr_x = right;
t.tr_y = top;
// add quad
atlas->appendQuad(t, v);
// adjust x and y
x += charWidth + pCi->right;
} else {
// special check for space or tab
if(c == ' ') {
x += m_spaceWidth;
} else if(c == '\t') {
x += m_spaceWidth * m_tabSize;
}
}
// we can clear line first char flag here
firstLineChar = false;
}
// save line height
prevLineHeight = currentLineHeight;
// save max width
width = MAX(width, x);
}
// add last line
if(prevLineHeight != 0) {
y += prevLineHeight;
}
// set label content size
setContentSize(width, y);
// adjust quad
for(int i = 0; i < m_atlasList->num; i++) {
wyTextureAtlas* atlas = (wyTextureAtlas*)wyArrayGet(m_atlasList, i);
atlas->iterateQuad3D(adjustAtlasPosition, this);
}
// release
for(vector<const char*>::iterator iter = lines->begin(); iter != lines->end(); iter++) {
releaseLine(*iter);
}
WYDELETE(lines);
WYDELETE(widthList);
}
