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Merge pull request #2756 from caternuson/bitmap_fill

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Add fill method to displayio.Bitmap
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Scott Shawcroft 2020-04-14 12:54:44 -07:00 committed by GitHub
commit e063b066f0
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3 changed files with 41 additions and 0 deletions
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19
shared-bindings/displayio/Bitmap.c
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@ -178,9 +178,28 @@ STATIC mp_obj_t bitmap_subscr(mp_obj_t self_in, mp_obj_t index_obj, mp_obj_t val
return mp_const_none;
}
//| .. method:: fill(value)
//|
//| Fills the bitmap with the supplied palette index value.
//|
STATIC mp_obj_t displayio_bitmap_obj_fill(mp_obj_t self_in, mp_obj_t value_obj) {
displayio_bitmap_t *self = MP_OBJ_TO_PTR(self_in);
mp_int_t value = mp_obj_get_int(value_obj);
if (value >= 1 << common_hal_displayio_bitmap_get_bits_per_value(self)) {
mp_raise_ValueError(translate("pixel value requires too many bits"));
}
common_hal_displayio_bitmap_fill(self, value);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_2(displayio_bitmap_fill_obj, displayio_bitmap_obj_fill);
STATIC const mp_rom_map_elem_t displayio_bitmap_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_height), MP_ROM_PTR(&displayio_bitmap_height_obj) },
{ MP_ROM_QSTR(MP_QSTR_width), MP_ROM_PTR(&displayio_bitmap_width_obj) },
{ MP_ROM_QSTR(MP_QSTR_fill), MP_ROM_PTR(&displayio_bitmap_fill_obj) },
};
STATIC MP_DEFINE_CONST_DICT(displayio_bitmap_locals_dict, displayio_bitmap_locals_dict_table);

1
shared-bindings/displayio/Bitmap.h
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@ -41,5 +41,6 @@ uint16_t common_hal_displayio_bitmap_get_width(displayio_bitmap_t *self);
uint32_t common_hal_displayio_bitmap_get_bits_per_value(displayio_bitmap_t *self);
void common_hal_displayio_bitmap_set_pixel(displayio_bitmap_t *bitmap, int16_t x, int16_t y, uint32_t value);
uint32_t common_hal_displayio_bitmap_get_pixel(displayio_bitmap_t *bitmap, int16_t x, int16_t y);
void common_hal_displayio_bitmap_fill(displayio_bitmap_t *bitmap, uint32_t value);
#endif // MICROPY_INCLUDED_SHARED_BINDINGS_DISPLAYIO_BITMAP_H

21
shared-module/displayio/Bitmap.c
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@ -162,3 +162,24 @@ 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) {
if (self->read_only) {
mp_raise_RuntimeError(translate("Read-only object"));
}
// Update the dirty area.
self->dirty_area.x1 = 0;
self->dirty_area.x2 = self->width;
self->dirty_area.y1 = 0;
self->dirty_area.y2 = self->height;
// build the packed word
uint32_t word = 0;
for (uint8_t i=0; i<32 / self->bits_per_value; i++) {
word |= (value & self->bitmask) << (32 - ((i+1)*self->bits_per_value));
}
// copy it in
for (uint32_t i=0; i<self->stride * self->height; i++) {
self->data[i] = word;
}
}