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Implement #896 plus minor changes

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When rendering a smooth font in a sprite the anti-aliasing will pick up the sprite background colour if the text background colour is not set.
This commit is contained in:
Bodmer
2020-12-31 17:58:28 +00:00
parent 9a7958ed28
commit 9fec44b6ea
8 changed files with 24 additions and 24 deletions
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Extensions/Sprite.cpp
+17 -17
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@@ -2408,7 +2408,7 @@ void TFT_eSprite::drawGlyph(uint16_t code)
if (newSprite)
{
createSprite(gWidth[gNum], gFont.yAdvance);
if(bg) fillSprite(bg);
if(fg != bg) fillSprite(bg);
cursor_x = -gdX[gNum];
cursor_y = 0;
}
@@ -2437,6 +2437,8 @@ void TFT_eSprite::drawGlyph(uint16_t code)
int16_t xs = 0;
uint16_t dl = 0;
uint8_t pixel = 0;
int32_t cgy = cursor_y + gFont.maxAscent - gdY[gNum];
int32_t cgx = cursor_x + gdX[gNum];
for (int32_t y = 0; y < gHeight[gNum]; y++)
{
@@ -2459,33 +2461,35 @@ void TFT_eSprite::drawGlyph(uint16_t code)
{
if (pixel != 0xFF)
{
if (dl) { drawFastHLine( xs, y + cursor_y + gFont.maxAscent - gdY[gNum], dl, fg); dl = 0; }
if (_bpp != 1) drawPixel(x + cursor_x + gdX[gNum], y + cursor_y + gFont.maxAscent - gdY[gNum], alphaBlend(pixel, fg, bg));
else if (pixel>127) drawPixel(x + cursor_x + gdX[gNum], y + cursor_y + gFont.maxAscent - gdY[gNum], fg);
if (dl) { drawFastHLine( xs, y + cgy, dl, fg); dl = 0; }
if (_bpp != 1) {
if (fg == bg) drawPixel(x + cgx, y + cgy, alphaBlend(pixel, fg, readPixel(x + cgx, y + cgy)));
else drawPixel(x + cgx, y + cgy, alphaBlend(pixel, fg, bg));
}
else if (pixel>127) drawPixel(x + cgx, y + cgy, fg);
}
else
{
if (dl==0) xs = x + cursor_x + gdX[gNum];
if (dl==0) xs = x + cgx;
dl++;
}
}
else
{
if (dl) { drawFastHLine( xs, y + cursor_y + gFont.maxAscent - gdY[gNum], dl, fg); dl = 0; }
if (dl) { drawFastHLine( xs, y + cgy, dl, fg); dl = 0; }
}
}
if (dl) { drawFastHLine( xs, y + cursor_y + gFont.maxAscent - gdY[gNum], dl, fg); dl = 0; }
if (dl) { drawFastHLine( xs, y + cgy, dl, fg); dl = 0; }
}
if (pbuffer) free(pbuffer);
if (newSprite)
{
pushSprite(cursor_x + gdX[gNum], cursor_y, bg);
pushSprite(cgx, cursor_y);
deleteSprite();
cursor_x += gxAdvance[gNum];
}
else cursor_x += gxAdvance[gNum];
cursor_x += gxAdvance[gNum];
}
else
{
@@ -2503,11 +2507,7 @@ void TFT_eSprite::drawGlyph(uint16_t code)
void TFT_eSprite::printToSprite(String string)
{
if(!fontLoaded) return;
uint16_t len = string.length();
char cbuffer[len + 1]; // Add 1 for the null
string.toCharArray(cbuffer, len + 1); // Add 1 for the null, otherwise characters get dropped
printToSprite(cbuffer, len);
//printToSprite((char*)string.c_str(), string.length());
printToSprite((char*)string.c_str(), string.length());
}
@@ -2541,7 +2541,7 @@ void TFT_eSprite::printToSprite(char *cbuffer, uint16_t len) //String string)
createSprite(sWidth, gFont.yAdvance);
if (textbgcolor != TFT_BLACK) fillSprite(textbgcolor);
if (textcolor != textbgcolor) fillSprite(textbgcolor);
}
n = 0;
@@ -2575,7 +2575,7 @@ int16_t TFT_eSprite::printToSprite(int16_t x, int16_t y, uint16_t index)
{
createSprite(sWidth, gFont.yAdvance);
if (textbgcolor != TFT_BLACK) fillSprite(textbgcolor);
if (textcolor != textbgcolor) fillSprite(textbgcolor);
drawGlyph(gUnicode[index]);