diff options
Diffstat (limited to 'shared-module')
| -rw-r--r-- | shared-module/displayio/Bitmap.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/shared-module/displayio/Bitmap.c b/shared-module/displayio/Bitmap.c index 59971d25c..2b0165f2f 100644 --- a/shared-module/displayio/Bitmap.c +++ b/shared-module/displayio/Bitmap.c @@ -162,3 +162,35 @@ void displayio_bitmap_finish_refresh(displayio_bitmap_t *self) { self->dirty_area.x1 = 0; self->dirty_area.x2 = 0; } + +void common_hal_displayio_bitmap_fill(displayio_bitmap_t *self, uint32_t value) { + + for (uint32_t x=0; x<self->width; x++) { + for (uint32_t y=0; y<self->height; y++) { + int32_t row_start = y * self->stride; + uint32_t bytes_per_value = self->bits_per_value / 8; + if (bytes_per_value < 1) { + uint32_t bit_position = (sizeof(size_t) * 8 - ((x & self->x_mask) + 1) * self->bits_per_value); + uint32_t index = row_start + (x >> self->x_shift); + uint32_t word = self->data[index]; + word &= ~(self->bitmask << bit_position); + word |= (value & self->bitmask) << bit_position; + self->data[index] = word; + } else { + size_t* row = self->data + row_start; + if (bytes_per_value == 1) { + ((uint8_t*) row)[x] = value; + } else if (bytes_per_value == 2) { + ((uint16_t*) row)[x] = value; + } else if (bytes_per_value == 4) { + ((uint32_t*) row)[x] = value; + } + } + } + } + + self->dirty_area.x1 = 0; + self->dirty_area.x2 = self->width; + self->dirty_area.y1 = 0; + self->dirty_area.y2 = self->height; +} |