snark13/Xteink-X4-crosspoint-reader
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fix: Skip negative screen coordinates only after we read the bitmap row. (#431)

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Otherwise, we don't crop properly.

Fixes #430 

### AI Usage

Did you use AI tools to help write this code? _**< NO >**_
This commit is contained in:
Jonas Diemer 2026-01-21 13:27:41 +01:00 committed by GitHub
parent 87d6c032a5
commit cc74039cab
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2 changed files with 5 additions and 4 deletions
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7
lib/GfxRenderer/GfxRenderer.cpp
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@ -201,9 +201,6 @@ void GfxRenderer::drawBitmap(const Bitmap& bitmap, const int x, const int y, con
if (screenY >= getScreenHeight()) { if (screenY >= getScreenHeight()) {
break; break;
} }
if (screenY < 0) {
continue;
}
if (bitmap.readNextRow(outputRow, rowBytes) != BmpReaderError::Ok) { if (bitmap.readNextRow(outputRow, rowBytes) != BmpReaderError::Ok) {
Serial.printf("[%lu] [GFX] Failed to read row %d from bitmap\n", millis(), bmpY); Serial.printf("[%lu] [GFX] Failed to read row %d from bitmap\n", millis(), bmpY);
@ -212,6 +209,10 @@ void GfxRenderer::drawBitmap(const Bitmap& bitmap, const int x, const int y, con
return; return;
} }
if (screenY < 0) {
continue;
}
if (bmpY < cropPixY) { if (bmpY < cropPixY) {
// Skip the row if it's outside the crop area // Skip the row if it's outside the crop area
continue; continue;

2
src/activities/boot_sleep/SleepActivity.cpp
View File

@ -167,7 +167,7 @@ void SleepActivity::renderBitmapSleepScreen(const Bitmap& bitmap) const {
Serial.printf("[%lu] [SLP] Cropping bitmap y: %f\n", millis(), cropY); Serial.printf("[%lu] [SLP] Cropping bitmap y: %f\n", millis(), cropY);
ratio = static_cast<float>(bitmap.getWidth()) / ((1.0f - cropY) * static_cast<float>(bitmap.getHeight())); ratio = static_cast<float>(bitmap.getWidth()) / ((1.0f - cropY) * static_cast<float>(bitmap.getHeight()));
} }
x = std::round((pageWidth - pageHeight * ratio) / 2); x = std::round((static_cast<float>(pageWidth) - static_cast<float>(pageHeight) * ratio) / 2);
y = 0; y = 0;
Serial.printf("[%lu] [SLP] Centering with ratio %f to x=%d\n", millis(), ratio, x); Serial.printf("[%lu] [SLP] Centering with ratio %f to x=%d\n", millis(), ratio, x);
} }