Upstream/esphome
1
0
Fork 0
mirror of https://github.com/esphome/esphome.git synced 2024-12-20 16:18:49 +01:00
Code Issues Projects Releases Wiki Activity

Add font anti-aliasing for grayscale display (#7934)

Browse Source
This commit is contained in:
Yoonji Park 2024-12-09 20:13:21 +09:00 committed by GitHub
parent 440080a753
commit 132a096ae7
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
esphome/components/font/font.cpp
View File

@ -133,9 +133,11 @@ void Font::print(int x_start, int y_start, display::Display *display, Color colo
auto diff_r = (float) color.r - (float) background.r;
auto diff_g = (float) color.g - (float) background.g;
auto diff_b = (float) color.b - (float) background.b;
auto diff_w = (float) color.w - (float) background.w;
auto b_r = (float) background.r;
auto b_g = (float) background.g;
auto b_b = (float) background.g;
auto b_b = (float) background.b;
auto b_w = (float) background.w;
for (int glyph_y = y_start + scan_y1; glyph_y != max_y; glyph_y++) {
for (int glyph_x = x_at + scan_x1; glyph_x != max_x; glyph_x++) {
uint8_t pixel = 0;
@ -153,8 +155,8 @@ void Font::print(int x_start, int y_start, display::Display *display, Color colo
display->draw_pixel_at(glyph_x, glyph_y, color);
} else if (pixel != 0) {
auto on = (float) pixel / (float) bpp_max;
auto blended =
Color((uint8_t) (diff_r * on + b_r), (uint8_t) (diff_g * on + b_g), (uint8_t) (diff_b * on + b_b));
auto blended = Color((uint8_t) (diff_r * on + b_r), (uint8_t) (diff_g * on + b_g),
(uint8_t) (diff_b * on + b_b), (uint8_t) (diff_w * on + b_w));
display->draw_pixel_at(glyph_x, glyph_y, blended);
}
}