//----------------------------------------------------------------//
void MOAIDraw::DrawString ( cc8* text, float x, float y, float width, float height ) {
// Sanity check
size_t textLength = strlen ( text );
if ( textLength <= 0 ) return;
// Get the context data
assert ( g_CurrentTextDrawContext );
// Transform the center into 'world' space
MOAIGfxDevice& gfxDevice = MOAIGfxDevice::Get ();
const ZLMatrix4x4& orgWorldTransform = gfxDevice.GetVertexTransform ( MOAIGfxDevice::VTX_WORLD_TRANSFORM );
USVec2D pos ( x, y );
orgWorldTransform.Transform ( pos );
x = pos.mX;
y = pos.mY;
// Extract the 'state'
MOAIFont& font = *g_CurrentTextDrawContext->mFont;
float scale = g_CurrentTextDrawContext->mScale;
float fontSize = g_CurrentTextDrawContext->mFontSize;
MOAIGlyphSet* glyphSet = font.GetGlyphSet ( fontSize );
assert ( glyphSet );
// Let's draw the string!
float cursorX = x;
float cursorY = y + glyphSet->GetAscent() * scale;
MOAIGlyph* prevGlyph = 0;
// Update the glyph cache
for ( size_t i = 0; i < textLength; i++ ) {
cc8 c = text [ i ];
if ( c != '\n' ) {
font.AffirmGlyph ( fontSize, c );
}
}
font.ProcessGlyphs ();
glyphSet = font.GetGlyphSet ( fontSize );
assert ( glyphSet );
for ( size_t i = 0; i < textLength; i++ ) {
cc8 c = text [ i ];
if ( c == '\n' ) {
// Move to the next line
cursorX = x;
cursorY += glyphSet->GetHeight () * scale;
prevGlyph = 0;
if ( height > 0 && (cursorY - y) > height ) {
break;
}
}
else {
if ( width > 0 && (cursorX - x) > width ) {
continue;
}
// Get the glyph for the current character
MOAIGlyph* glyph = glyphSet->GetGlyph ( c );
if ( glyph ) {
// Draw the current glyph
MOAITextureBase* glyphTexture = font.GetGlyphTexture ( *glyph );
if ( glyphTexture ) {
GlyphPlacement placement = { glyph, cursorX, cursorY };
g_CurrentTextDrawContext->mGlyphs.push_back( placement );
}
// Apply kerning
if ( prevGlyph ) {
MOAIKernVec kern = prevGlyph->GetKerning ( glyph->GetCode () );
cursorX += kern.mX * scale;
}
// Move the cursor
cursorX += glyph->GetAdvanceX () * scale;
}
prevGlyph = glyph;
}
}
}
