diff options
Diffstat (limited to 'shared-module')
| -rw-r--r-- | shared-module/displayio/Bitmap.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/shared-module/displayio/Bitmap.c b/shared-module/displayio/Bitmap.c index 8bcda6086..75f352b30 100644 --- a/shared-module/displayio/Bitmap.c +++ b/shared-module/displayio/Bitmap.c @@ -105,6 +105,83 @@ uint32_t common_hal_displayio_bitmap_get_pixel(displayio_bitmap_t *self, int16_t return 0; } +void common_hal_displayio_bitmap_insert(displayio_bitmap_t *self, int16_t x, int16_t y, displayio_bitmap_t *source, + int16_t x1, int16_t y1, int16_t x2, int16_t y2) { + // Copy complete "source" bitmap into "self" bitmap at location x,y in the "self" + // Add a boolean to determine if all values are copied, or only if non-zero + // Default is copy all values, but for text glyphs this should copy only non-zero values + + if (self->read_only) { + mp_raise_RuntimeError(translate("Read-only object")); + } + + // If this value is encountered in the source bitmap, it will not be copied (for text glyphs) + // This should be added as an optional parameter, and if it is `None`, then all pixels are copied + uint32_t skip_value=0; + + //// check for zero width, this would be a single pixel + // if (x1_source == x2_source) || (y1_source == y2_source) { + // return 0 + // } + + // Dirty area update is unnecessary with simplest version. + // int16_t x_max=x+(x2_source-x1_source); + // int16_t y_max=y+(y2_source-y1_source); + // + // + // // Update the dirty area. + // if (x < self->dirty_area.x1) { + // self->dirty_area.x1 = x; + // } else if (x_max >= self->dirty_area.x2) { + // self->dirty_area.x2 = x_max); + // } + // if (y < self->dirty_area.y1) { + // self->dirty_area.y1 = y; + // } else if (y_max >= self->dirty_area.y2) { + // self->dirty_area.y2 = y_max; + // } + + // simplest version - use internal functions for get/set pixels + for (uint16_t i=0; i<= (x2-x1) ; i++) { + for (uint16_t j=0; j<= (y2-y1) ; j++){ + uint32_t value = common_hal_displayio_bitmap_get_pixel(source, x1+i, y1+j); + if (value != skip_value) { + if ( (x+i >= 0) && (y+j >= 0) && (x+i <= self->width-1) && (y+j <= self->height-1) ){ + common_hal_displayio_bitmap_set_pixel(self, x+i, y+j, value); + } + } + } + } + + // Would be faster if copying a full word at a time. + /// Hard work here!!!! + // index into the original row + // figure out how to shift the bits into the right location + // check the boolean and don't update any zero's + + // // Update our data + // 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; + // } + // } +} + + void common_hal_displayio_bitmap_set_pixel(displayio_bitmap_t *self, int16_t x, int16_t y, uint32_t value) { if (self->read_only) { mp_raise_RuntimeError(translate("Read-only object")); |