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circuitpython-stage: allow choosing background color

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This commit is contained in:
Radomir Dopieralski 2020-01-30 15:24:04 +01:00
parent 0b761f60ea
commit 27c36eea2b
4 changed files with 16 additions and 6 deletions
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2
frozen/circuitpython-stage

@ -1 +1 @@
Subproject commit 8d5cc384058b1cb296aaeab86fb8405042d547ed
Subproject commit 19a66d79f0650a15e502464b42e16692365eab36

11
shared-bindings/_stage/__init__.c
View File

@ -51,7 +51,7 @@
//| Layer
//| Text
//|
//| .. function:: render(x0, y0, x1, y1, layers, buffer, display[, scale])
//| .. function:: render(x0, y0, x1, y1, layers, buffer, display[, scale[, background]])
//|
//| Render and send to the display a fragment of the screen.
//|
@ -63,6 +63,7 @@
//| :param bytearray buffer: A buffer to use for rendering.
//| :param ~displayio.Display display: The display to use.
//| :param int scale: How many times should the image be scaled up.
//| :param int background: What color to display when nothing is there.
//|
//| There are also no sanity checks, outside of the basic overflow
//| checking. The caller is responsible for making the passed parameters
@ -92,12 +93,16 @@ STATIC mp_obj_t stage_render(size_t n_args, const mp_obj_t *args) {
}
displayio_display_obj_t *display = MP_OBJ_TO_PTR(native_display);
uint8_t scale = 1;
if (n_args >= 8) {
if (n_args > 7) {
scale = mp_obj_get_int(args[7]);
}
uint16_t background = 0;
if (n_args > 8) {
background = mp_obj_get_int(args[8]);
}
render_stage(x0, y0, x1, y1, layers, layers_size, buffer, buffer_size,
display, scale);
display, scale, background);
return mp_const_none;
}

6
shared-module/_stage/__init__.c
View File

@ -34,7 +34,8 @@
void render_stage(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1,
mp_obj_t *layers, size_t layers_size,
uint16_t *buffer, size_t buffer_size,
displayio_display_obj_t *display, uint8_t scale) {
displayio_display_obj_t *display,
uint8_t scale, uint16_t background) {
displayio_area_t area;
@ -68,6 +69,9 @@ void render_stage(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1,
break;
}
}
if (c == TRANSPARENT) {
c = background;
}
for (uint8_t xscale = 0; xscale < scale; ++xscale) {
buffer[index] = c;
index += 1;

3
shared-module/_stage/__init__.h
View File

@ -37,6 +37,7 @@
void render_stage(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1,
mp_obj_t *layers, size_t layers_size,
uint16_t *buffer, size_t buffer_size,
displayio_display_obj_t *display, uint8_t scale);
displayio_display_obj_t *display,
uint8_t scale, uint16_t background);
#endif // MICROPY_INCLUDED_SHARED_MODULE__STAGE