102 lines
3.8 KiB
C
102 lines
3.8 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2017 Radomir Dopieralski
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "Layer.h"
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#include "Text.h"
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#include "__init__.h"
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#include "shared-bindings/_stage/Layer.h"
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#include "shared-bindings/_stage/Text.h"
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void render_stage(
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uint16_t x0, uint16_t y0,
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uint16_t x1, uint16_t y1,
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int16_t vx, int16_t vy,
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mp_obj_t *layers, size_t layers_size,
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uint16_t *buffer, size_t buffer_size,
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displayio_display_obj_t *display,
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uint8_t scale, uint16_t background) {
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displayio_area_t area;
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area.x1 = x0 * scale;
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area.y1 = y0 * scale;
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area.x2 = x1 * scale;
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area.y2 = y1 * scale;
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displayio_display_core_set_region_to_update(
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&display->core, display->set_column_command, display->set_row_command,
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NO_COMMAND, NO_COMMAND, display->data_as_commands, false, &area,
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display->SH1107_addressing);
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while (!displayio_display_core_begin_transaction(&display->core)) {
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RUN_BACKGROUND_TASKS;
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}
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display->core.send(display->core.bus, DISPLAY_COMMAND,
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CHIP_SELECT_TOGGLE_EVERY_BYTE,
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&display->write_ram_command, 1);
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size_t index = 0;
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for (int16_t y = y0 + vy; y < y1 + vy; ++y) {
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for (uint8_t yscale = 0; yscale < scale; ++yscale) {
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for (int16_t x = x0 + vx; x < x1 + vx; ++x) {
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uint16_t c = TRANSPARENT;
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for (size_t layer = 0; layer < layers_size; ++layer) {
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layer_obj_t *obj = MP_OBJ_TO_PTR(layers[layer]);
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if (obj->base.type == &mp_type_layer) {
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c = get_layer_pixel(obj, x, y);
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} else if (obj->base.type == &mp_type_text) {
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c = get_text_pixel((text_obj_t *)obj, x, y);
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}
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if (c != TRANSPARENT) {
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break;
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}
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}
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if (c == TRANSPARENT) {
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c = background;
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}
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for (uint8_t xscale = 0; xscale < scale; ++xscale) {
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buffer[index] = c;
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index += 1;
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// The buffer is full, send it.
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if (index >= buffer_size) {
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display->core.send(display->core.bus, DISPLAY_DATA,
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CHIP_SELECT_UNTOUCHED,
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((uint8_t *)buffer), buffer_size * 2);
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index = 0;
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}
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}
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}
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}
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}
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// Send the remaining data.
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if (index) {
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display->core.send(display->core.bus, DISPLAY_DATA,
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CHIP_SELECT_UNTOUCHED,
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((uint8_t *)buffer), index * 2);
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}
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displayio_display_core_end_transaction(&display->core);
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}
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