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Take advantage of clipping to speed image drawing. (#8630)

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Lucas Hartmann 2025-04-27 23:18:47 -03:00 committed by GitHub
parent 38dae8489e
commit 1da0dff8b1
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GPG Key ID: B5690EEEBB952194
1 changed files with 25 additions and 8 deletions
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33
esphome/components/image/image.cpp
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@ -6,10 +6,27 @@ namespace esphome {
namespace image {
void Image::draw(int x, int y, display::Display *display, Color color_on, Color color_off) {
int img_x0 = 0;
int img_y0 = 0;
int w = width_;
int h = height_;
auto clipping = display->get_clipping();
if (clipping.is_set()) {
if (clipping.x > x)
img_x0 += clipping.x - x;
if (clipping.y > y)
img_y0 += clipping.y - y;
if (w > clipping.x2() - x)
w = clipping.x2() - x;
if (h > clipping.y2() - y)
h = clipping.y2() - y;
}
switch (type_) {
case IMAGE_TYPE_BINARY: {
for (int img_x = 0; img_x < width_; img_x++) {
for (int img_y = 0; img_y < height_; img_y++) {
for (int img_x = img_x0; img_x < w; img_x++) {
for (int img_y = img_y0; img_y < h; img_y++) {
if (this->get_binary_pixel_(img_x, img_y)) {
display->draw_pixel_at(x + img_x, y + img_y, color_on);
} else if (!this->transparency_) {
@ -20,8 +37,8 @@ void Image::draw(int x, int y, display::Display *display, Color color_on, Color
break;
}
case IMAGE_TYPE_GRAYSCALE:
for (int img_x = 0; img_x < width_; img_x++) {
for (int img_y = 0; img_y < height_; img_y++) {
for (int img_x = img_x0; img_x < w; img_x++) {
for (int img_y = img_y0; img_y < h; img_y++) {
const uint32_t pos = (img_x + img_y * this->width_);
const uint8_t gray = progmem_read_byte(this->data_start_ + pos);
Color color = Color(gray, gray, gray, 0xFF);
@ -47,8 +64,8 @@ void Image::draw(int x, int y, display::Display *display, Color color_on, Color
}
break;
case IMAGE_TYPE_RGB565:
for (int img_x = 0; img_x < width_; img_x++) {
for (int img_y = 0; img_y < height_; img_y++) {
for (int img_x = img_x0; img_x < w; img_x++) {
for (int img_y = img_y0; img_y < h; img_y++) {
auto color = this->get_rgb565_pixel_(img_x, img_y);
if (color.w >= 0x80) {
display->draw_pixel_at(x + img_x, y + img_y, color);
@ -57,8 +74,8 @@ void Image::draw(int x, int y, display::Display *display, Color color_on, Color
}
break;
case IMAGE_TYPE_RGB:
for (int img_x = 0; img_x < width_; img_x++) {
for (int img_y = 0; img_y < height_; img_y++) {
for (int img_x = img_x0; img_x < w; img_x++) {
for (int img_y = img_y0; img_y < h; img_y++) {
auto color = this->get_rgb_pixel_(img_x, img_y);
if (color.w >= 0x80) {
display->draw_pixel_at(x + img_x, y + img_y, color);