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Code Pull Requests Activity

Add new callback for smooth font antialiasing

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Callback allows anitaliased fonts to be rendered over colour gradients
or images.
"Smooth_font_reading_TFT" example added
"Smooth_font_gradient" example added
Minor changes to avoid signed/unsigned comparison warnings.
This commit is contained in:
Bodmer
2019-11-10 02:23:22 +00:00
parent d28e43574b
commit 5bb14ba2d8
16 changed files with 369 additions and 46 deletions
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Extensions/Sprite.cpp
+17 -17
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@@ -566,21 +566,21 @@ void TFT_eSprite::pushImage(int32_t x, int32_t y, int32_t w, int32_t h, uint16_
int32_t xs = x;
int32_t ys = y;
uint32_t ws = w;
uint32_t hs = h;
int32_t ws = w;
int32_t hs = h;
if (x < 0) { xo = -x; ws += x; xs = 0; }
if (y < 0) { yo = -y; hs += y; ys = 0; }
if (xs + ws >= _iwidth) ws = _iwidth - xs;
if (ys + hs >= _iheight) hs = _iheight - ys;
if (xs + ws >= (int32_t)_iwidth) ws = _iwidth - xs;
if (ys + hs >= (int32_t)_iheight) hs = _iheight - ys;
if (_bpp == 16) // Plot a 16 bpp image into a 16 bpp Sprite
{
for (uint32_t yp = yo; yp < yo + hs; yp++)
for (int32_t yp = yo; yp < yo + hs; yp++)
{
x = xs;
for (uint32_t xp = xo; xp < xo + ws; xp++)
for (int32_t xp = xo; xp < xo + ws; xp++)
{
uint16_t color = data[xp + yp * w];
if(!_iswapBytes) color = color<<8 | color>>8;
@@ -592,10 +592,10 @@ void TFT_eSprite::pushImage(int32_t x, int32_t y, int32_t w, int32_t h, uint16_
}
else if (_bpp == 8) // Plot a 16 bpp image into a 8 bpp Sprite
{
for (uint32_t yp = yo; yp < yo + hs; yp++)
for (int32_t yp = yo; yp < yo + hs; yp++)
{
x = xs;
for (uint32_t xp = xo; xp < xo + ws; xp++)
for (int32_t xp = xo; xp < xo + ws; xp++)
{
uint16_t color = data[xp + yp * w];
if(_iswapBytes) color = color<<8 | color>>8;
@@ -662,21 +662,21 @@ void TFT_eSprite::pushImage(int32_t x, int32_t y, int32_t w, int32_t h, const u
int32_t xs = x;
int32_t ys = y;
uint32_t ws = w;
uint32_t hs = h;
int32_t ws = w;
int32_t hs = h;
if (x < 0) { xo = -x; ws += x; xs = 0; }
if (y < 0) { yo = -y; hs += y; ys = 0; }
if (xs + ws >= _iwidth) ws = _iwidth - xs;
if (ys + hs >= _iheight) hs = _iheight - ys;
if (xs + ws >= (int32_t)_iwidth) ws = _iwidth - xs;
if (ys + hs >= (int32_t)_iheight) hs = _iheight - ys;
if (_bpp == 16) // Plot a 16 bpp image into a 16 bpp Sprite
{
for (uint32_t yp = yo; yp < yo + hs; yp++)
for (int32_t yp = yo; yp < yo + hs; yp++)
{
x = xs;
for (uint32_t xp = xo; xp < xo + ws; xp++)
for (int32_t xp = xo; xp < xo + ws; xp++)
{
uint16_t color = pgm_read_word(data + xp + yp * w);
if(!_iswapBytes) color = color<<8 | color>>8;
@@ -689,10 +689,10 @@ void TFT_eSprite::pushImage(int32_t x, int32_t y, int32_t w, int32_t h, const u
else if (_bpp == 8) // Plot a 16 bpp image into a 8 bpp Sprite
{
for (uint32_t yp = yo; yp < yo + hs; yp++)
for (int32_t yp = yo; yp < yo + hs; yp++)
{
x = xs;
for (uint32_t xp = xo; xp < xo + ws; xp++)
for (int32_t xp = xo; xp < xo + ws; xp++)
{
uint16_t color = pgm_read_word(data + xp + yp * w);
if(_iswapBytes) color = color<<8 | color>>8;
@@ -733,7 +733,7 @@ void TFT_eSprite::pushImage(int32_t x, int32_t y, int32_t w, int32_t h, const u
uint8_t pbyte = pgm_read_byte(pdata++);
for (uint8_t xc = 0; xc < 8; xc++)
{
if (xp+xc<w) drawPixel(x+xp+xc, y+yp, (pbyte<<xc) & 0x80);
if (xp+xc<(uint32_t)w) drawPixel(x+xp+xc, y+yp, (pbyte<<xc) & 0x80);
}
}
}