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circuitpython/shared-module/displayio/TileGrid.c

142 lines
5.7 KiB

/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "shared-bindings/displayio/TileGrid.h"
#include "shared-bindings/displayio/Bitmap.h"
#include "shared-bindings/displayio/ColorConverter.h"
#include "shared-bindings/displayio/OnDiskBitmap.h"
#include "shared-bindings/displayio/Palette.h"
#include "shared-bindings/displayio/Shape.h"
void common_hal_displayio_tilegrid_construct(displayio_tilegrid_t *self, mp_obj_t bitmap,
uint16_t bitmap_width_in_tiles,
mp_obj_t pixel_shader, uint16_t width, uint16_t height,
uint16_t tile_width, uint16_t tile_height, uint16_t x, uint16_t y, uint8_t default_tile) {
uint32_t total_tiles = width * height;
// Sprites will only have one tile so save a little memory by inlining values in the pointer.
uint8_t inline_tiles = sizeof(uint8_t*);
if (total_tiles <= inline_tiles) {
self->inline_tiles = true;
} else {
self->tiles = (uint8_t*) m_malloc(total_tiles, false);
self->inline_tiles = false;
}
self->bitmap_width_in_tiles = bitmap_width_in_tiles;
self->width_in_tiles = width;
self->height_in_tiles = height;
self->total_width = width * tile_width;
self->total_height = height * tile_height;
self->tile_width = tile_width;
self->tile_height = tile_height;
self->bitmap = bitmap;
self->pixel_shader = pixel_shader;
self->x = x;
self->y = y;
}
void common_hal_displayio_tilegrid_get_position(displayio_tilegrid_t *self, int16_t* x, int16_t* y) {
*x = self->x;
*y = self->y;
}
void common_hal_displayio_tilegrid_set_position(displayio_tilegrid_t *self, int16_t x, int16_t y) {
self->x = x;
self->y = y;
self->needs_refresh = true;
}
mp_obj_t common_hal_displayio_tilegrid_get_pixel_shader(displayio_tilegrid_t *self) {
return self->pixel_shader;
}
void common_hal_displayio_tilegrid_set_pixel_shader(displayio_tilegrid_t *self, mp_obj_t pixel_shader) {
self->pixel_shader = pixel_shader;
self->needs_refresh = true;
}
bool displayio_tilegrid_get_pixel(displayio_tilegrid_t *self, int16_t x, int16_t y, uint16_t* pixel) {
x -= self->x;
y -= self->y;
if (y < 0 || y >= self->total_height || x >= self->total_width || x < 0) {
return false;
}
uint8_t* tiles = self->tiles;
if (self->inline_tiles) {
tiles = (uint8_t*) &self->tiles;
}
if (tiles == NULL) {
return false;
}
uint16_t tile_location = (y / self->tile_height) * self->width_in_tiles + x / self->tile_width;
uint8_t tile = tiles[tile_location];
uint16_t tile_x = tile_x = (tile % self->bitmap_width_in_tiles) * self->tile_width + x % self->tile_width;
uint16_t tile_y = tile_y = (tile / self->bitmap_width_in_tiles) * self->tile_height + y % self->tile_height;
uint32_t value = 0;
if (MP_OBJ_IS_TYPE(self->bitmap, &displayio_bitmap_type)) {
value = common_hal_displayio_bitmap_get_pixel(self->bitmap, tile_x, tile_y);
} else if (MP_OBJ_IS_TYPE(self->bitmap, &displayio_shape_type)) {
value = common_hal_displayio_shape_get_pixel(self->bitmap, tile_x, tile_y);
} else if (MP_OBJ_IS_TYPE(self->bitmap, &displayio_ondiskbitmap_type)) {
value = common_hal_displayio_ondiskbitmap_get_pixel(self->bitmap, tile_x, tile_y);
}
if (self->pixel_shader == mp_const_none) {
*pixel = value;
return true;
} else if (MP_OBJ_IS_TYPE(self->pixel_shader, &displayio_palette_type) && displayio_palette_get_color(self->pixel_shader, value, pixel)) {
return true;
} else if (MP_OBJ_IS_TYPE(self->pixel_shader, &displayio_colorconverter_type) && common_hal_displayio_colorconverter_convert(self->pixel_shader, value, pixel)) {
return true;
}
return false;
}
void common_hal_displayio_textgrid_set_tile(displayio_tilegrid_t *self, uint16_t x, uint16_t y, uint8_t tile_index) {
uint8_t* tiles = self->tiles;
if (self->inline_tiles) {
tiles = (uint8_t*) &self->tiles;
}
if (tiles == NULL) {
return;
}
tiles[y * self->width_in_tiles + x] = tile_index;
self->needs_refresh = true;
}
bool displayio_tilegrid_needs_refresh(displayio_tilegrid_t *self) {
return self->needs_refresh || displayio_palette_needs_refresh(self->pixel_shader);
}
void displayio_tilegrid_finish_refresh(displayio_tilegrid_t *self) {
self->needs_refresh = false;
displayio_palette_finish_refresh(self->pixel_shader);
// TODO(tannewt): We could double buffer changes to position and move them over here.
// That way they won't change during a refresh and tear.
}