int GxTextRenderer::myGetCharIndex(int x, int y, int cx, int cy)
{
// Check if the character is before the start or after the end of the text.
if(cy <= y || myLines.empty()) return 0;
if(cy >= y + myTextH) return myLen;
// Find the correct line number.
int lineIndex = 0;
for(int l=0, ly=y; l<(int)myLines.size() && cy>=ly; ly += myFont->fontSize, ++l)
lineIndex = l;
// Process the line on which the character resides.
const Line& line = myLines[lineIndex];
const float ox = (float)x + GetOffsetX(myAlignH, line.width);
const float px = (float)cx;
// Go through each character.
Pen pen = { 0, 0, line.spacemul };
myResetPos();
mySkipTo(line.begin);
while(myReadPos < line.end)
{
const Glyph& glyph = myNextChar();
myAdvance(pen, glyph);
if(px < ox + pen.x + pen.advance*0.5f) return myPos;
}
// Only the last line is allowed to return one beyond the last character.
if(myReadPos == myLen && myStr[myPos] != C_LINE_FEED) return myLen;
// Otherwise, just return the last character.
return myPos;
}
void GxTextRenderer::myDrawUnderlines(float x, float y)
{
// Fill in the vertex data by rendering out the lines of rects.
Glyph rect = { GxAreaf(0,1,0,2), GxAreaf(), 0, 0, 0, 0 };
myResetPos();
int index = 0;
for(size_t l=0; l<myLines.size(); ++l)
{
const Line& line = myLines[l];
Pen pen = { 0, 0, line.spacemul };
const float ox = x + GetOffsetX(myAlignH, line.width);
const float oy = y + (int)((l+1) * myFont->fontSize);
// Emit underline quads for the current line.
bool drawing = false;
mySkipTo(line.begin);
while(myReadPos < line.end)
{
const Glyph& glyph = myNextChar();
myAdvance(pen, glyph);
if(myInUnderline && !drawing)
{
rect.coords.l = pen.x;
drawing = true;
}
if(drawing)
{
if(!myInUnderline)
{
myResizeBuffers(index + 2);
myEmitQuad(rect, index, ox, oy);
drawing = false;
}
else if(NonWhitespace(glyph))
{
rect.coords.r = pen.x + pen.advance;
}
}
}
if(drawing)
{
myResizeBuffers(index + 2);
myEmitQuad(rect, index, ox, oy);
}
}
// Finally it's time to render the vertices.
myRenderQuads(0, index*6, 0);
}
Game::Game(QObject *parent, int width, int height) :
QGraphicsScene(parent),m_width(width),m_height(height)
{
setSceneRect(0, 0, m_width, m_height);
freePen.setColor(QColor(200,200,200));
freePen.setWidth(0);
keyMap[Qt::Key_Up] = X_KEY_UP;
keyMap[Qt::Key_Down] = X_KEY_DOWN;
keyMap[Qt::Key_Left] = X_KEY_LEFT;
keyMap[Qt::Key_Right] = X_KEY_RIGHT;
m_evils = 0;
m_key_mask = 0;
m_timer.setInterval(period);
QObject::connect(&m_timer, SIGNAL(timeout()), this, SLOT(myAdvance()));
//startGame();
}
GxRecti GxTextRenderer::myGetCharRect(float x, float y, int charIndex)
{
// Empty string.
if(myLines.empty())
return GxRecti((int)x, (int)y, 0, myFont->fontSize);
// Find the correct line number.
int lineIndex = 0;
for(int l=0; l<(int)myLines.size() && myLines[l].begin <= charIndex; ++l)
lineIndex = l;
// Process the line on which the character resides.
const Line& line = myLines[lineIndex];
const float ox = x + GetOffsetX(myAlignH, line.width);
const float oy = y + (float)(lineIndex * myFont->fontSize);
// If the index is before begin, we can return the position of the first character.
if(charIndex < line.begin)
return GxRecti((int)ox, (int)oy, 0, myFont->fontSize);
// Go through the line until we reach the character at the index.
Pen pen = { 0, 0, line.spacemul };
myResetPos();
mySkipTo(line.begin);
while(myReadPos < line.end)
{
const Glyph& glyph = myNextChar();
myAdvance(pen, glyph);
if(myPos == charIndex)
return GxRecti((int)(ox + pen.x), (int)oy, (int)pen.advance, myFont->fontSize);
}
// If the final line ends with a line feed, we return the start of the next line.
if(myReadPos == myLen && myStr[myPos] == C_LINE_FEED)
return GxRecti((int)ox, (int)oy + myFont->fontSize, 0, myFont->fontSize);
// If not, we just return the end of the final line.
return GxRecti((int)(ox + pen.x + pen.advance), (int)oy, 0, myFont->fontSize);
}
void GxTextRenderer::myDrawHighlight(float x, float y)
{
const int lineCount = (int)myLines.size();
myResizeBuffers(lineCount * 2);
// Fill in the vertex data by rendering out the lines of rects.
Glyph rect = { GxAreaf(0,(float)-myFont->fontSize,0,0), GxAreaf(), 0, 0, 0, 0 };
myResetPos();
int index = 0;
for(int l=0; l<lineCount; ++l)
{
const Line& line = myLines[l];
Pen pen = { 0, 0, line.spacemul };
const float ox = x + GetOffsetX(myAlignH, line.width);
const float oy = y + (float)((l+1) * myFont->fontSize);
// Find the x-position of the start and end of the highlight rectangle.
bool started = false;
mySkipTo(line.begin);
while(myReadPos < line.end)
{
const Glyph& glyph = myNextChar();
myAdvance(pen, glyph);
if(myInRange())
{
if(!started)
rect.coords.l = pen.x, started = true;
rect.coords.r = pen.x + pen.advance;
}
}
// Emit a quad for the highlight rectangle.
if(started) myEmitQuad(rect, index, ox, oy);
}
// Finally it's time to render the vertices.
myRenderQuads(0, index*6, 0);
}
void GxTextRenderer::myDrawText(float x, float y)
{
const int lineCount = (int)myLines.size();
const Glyph& period = myFont->GetGlyph('.');
// Count the total number of quads and the number of quads per glyph page.
const int pageCount = myFont->glyphPageCount;
std::vector<PageQuads> quads(pageCount);
myResetPos();
int quadTotal = 0;
for(int l=0; l<lineCount; ++l)
{
// Count the number of glyph quads.
const Line& line = myLines[l];
mySkipTo(line.begin);
while(myReadPos < line.end)
{
const Glyph& glyph = myNextChar();
if(myInRange() && NonWhitespace(glyph))
{
if(glyph.page >= 0)
++quads[glyph.page].count;
++quadTotal;
}
}
// If there are ellipsis, count three extra quads.
if(line.ellipsis)
{
quads[period.page].count += 3;
quadTotal += 3;
}
}
if(quadTotal == 0) return;
// If there is a shadow effect, each quad has an additional shadow quad.
if(myColorS.a)
{
for(int i=0; i<pageCount; ++i)
quads[i].count *= 2;
quadTotal *= 2;
}
// Draw underlines before the rest of the glyphs are drawn.
if(myHasUnderlines) myDrawUnderlines(x, y);
// Assign each glyph page a portion of the allocated vertices.
myResizeBuffers(quadTotal);
for(int i=0, j=0; i<pageCount; ++i)
{
quads[i].index = j;
j += quads[i].count;
}
// Fill in the vertex data and make a list of custom glyphs, which are rendered afterwards.
myResetPos();
myCustomGlyphs.clear();
for(int l=0; l<lineCount; ++l)
{
const Line& line = myLines[l];
Pen pen = { 0, 0, line.spacemul };
const float ox = x + GetOffsetX(myAlignH, line.width);
const float oy = y + (float)((l+1) * myFont->fontSize);
mySkipTo(line.begin);
while(myReadPos < line.end)
{
// If this is a printable character, we will emit a quad for it.
const Glyph& glyph = myNextChar();
myAdvance(pen, glyph);
if(myInRange() && NonWhitespace(glyph))
{
if(glyph.page >= 0)
myEmitQuad(glyph, quads[glyph.page].index, ox + pen.x, oy);
else
myCustomGlyphs.push_back(CGGxRecti(&glyph, ox + pen.x, oy));
}
}
// If there are ellipsis, emit quads for them.
if(line.ellipsis)
{
pen.x += pen.advance;
int& index = quads[period.page].index;
for(int j=0; j<3; ++j, pen.x += period.xAdvance)
myEmitQuad(period, index, ox + pen.x, oy);
}
}
// Finally it's time to render the glyph vertices.
for(int i=0, idx=0, count=0; i<pageCount; ++i)
{
if(count = quads[i].count*6)
myRenderQuads(idx, count, myFont->glyphPages[i].texture);
idx += count;
}
// And after that, render the custom glyphs.
if(myCustomGlyphs.size() > 0)
{
myResizeBuffers(8);
GxFontDatabaseImp* database = GxFontDatabaseImp::singleton;
for(size_t i=0; i<myCustomGlyphs.size(); ++i)
{
int idx = 0;
const CGGxRecti& r = myCustomGlyphs[i];
myEmitQuad(*myCustomGlyphs[i].glyph, idx, r.x, r.y);
myRenderQuads(0, idx*6, database->GetCustomGlyphTexture(r.glyph));
}
}
}
