Be a good c-tizen and split paper.h into header and implementation
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9a86b0579a
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3 changed files with 319 additions and 311 deletions
309
main/paper.c
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309
main/paper.c
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#include "paper.h"
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// this file defines lua bindings to the epdiy e-ink library.
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//
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// see https://epdiy.readthedocs.io/en/latest/api.html for epdiy documentation.
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// see https://www.lua.org/manual/5.4/manual.html for lua documentation.
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EpdiyHighlevelState hl;
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uint8_t* fb;
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static int init (lua_State *L) {
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epd_init(&epd_board_lilygo_t5_47, &ED047TC1, EPD_LUT_64K);
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// epd_set_vcom(1560);
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hl = epd_hl_init(WAVEFORM);
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epd_set_rotation(EPD_ROT_LANDSCAPE);
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fb = epd_hl_get_framebuffer(&hl);
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return 0;
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}
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static int clear (lua_State *L){
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epd_clear();
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return 0;
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}
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static int get_width (lua_State *L) {
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int width = epd_rotated_display_width();
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lua_pushnumber(L, width);
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return 1;
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}
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static int get_height (lua_State *L) {
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int height = epd_rotated_display_height();
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lua_pushnumber(L, height);
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return 1;
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}
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static int set_rotation (lua_State *L) {
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char *rotation = lua_tostring(L, -1);
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luaL_argcheck(
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L,
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strcmp(rotation, "landscape") == 0 ||
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strcmp(rotation, "portrait") == 0 ||
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strcmp(rotation, "inverted_landscape") == 0 ||
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strcmp(rotation, "inverted_portrait") == 0,
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1,
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"expected `rotation` to be either 'landscape', 'portrait', 'inverted_landscape' or 'inverted_portrait'"
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);
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epd_set_rotation(
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strcmp(rotation, "landscape") == 0
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? EPD_ROT_LANDSCAPE
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: strcmp(rotation, "portrait") == 0
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? EPD_ROT_PORTRAIT
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: strcmp(rotation, "inverted_landscape") == 0
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? EPD_ROT_INVERTED_LANDSCAPE
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: EPD_ROT_INVERTED_PORTRAIT
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);
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return 0;
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}
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static int get_rotation (lua_State *L) {
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int rotation = epd_get_rotation();
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lua_pushstring(
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L,
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rotation == EPD_ROT_LANDSCAPE
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? "landscape"
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: rotation == EPD_ROT_PORTRAIT
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? "portrait"
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: rotation == EPD_ROT_INVERTED_LANDSCAPE
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? "inverted_landscape"
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: "inverted_portrait"
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);
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return 1;
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}
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static int draw_pixel (lua_State *L) {
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int x, y, color;
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int isnum;
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x = lua_tonumberx(L, 1, &isnum);
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luaL_argcheck(L, isnum, 1, "expected `x` to be a number");
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y = lua_tonumberx(L, 2, &isnum);
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luaL_argcheck(L, isnum, 2, "expected `y` to be a number");
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color = lua_tonumberx(L, 3, &isnum);
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luaL_argcheck(L, isnum && color >= 0 && color < 256, 3, "expected `color` to be a number within [0, 255]");
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epd_draw_pixel(x, y, color, fb);
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return 0;
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}
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static int draw_line (lua_State *L) {
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int x1, y1, x2, y2, color;
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int isnum;
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x1 = lua_tonumberx(L, 1, &isnum);
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luaL_argcheck(L, isnum, 1, "expected `x1` to be a number");
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y1 = lua_tonumberx(L, 2, &isnum);
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luaL_argcheck(L, isnum, 2, "expected `y1` to be a number");
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x2 = lua_tonumberx(L, 3, &isnum);
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luaL_argcheck(L, isnum, 3, "expected `x2` to be a number");
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y2 = lua_tonumberx(L, 4, &isnum);
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luaL_argcheck(L, isnum, 4, "expected `y2` to be a number");
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color = lua_tonumberx(L, 5, &isnum);
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luaL_argcheck(L, isnum && color >= 0 && color < 256, 5, "expected `color` to be a number within [0, 255]");
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epd_draw_line(x1, y1, x2, y2, color, fb);
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return 0;
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}
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static int draw_hline (lua_State *L) {
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int x, y, length, color;
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int isnum;
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x = lua_tonumberx(L, 1, &isnum);
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luaL_argcheck(L, isnum, 1, "expected `x` to be a number");
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y = lua_tonumberx(L, 2, &isnum);
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luaL_argcheck(L, isnum, 2, "expected `y` to be a number");
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length = lua_tonumberx(L, 3, &isnum);
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luaL_argcheck(L, isnum, 3, "expected `length` to be a number");
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color = lua_tonumberx(L, 4, &isnum);
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luaL_argcheck(L, isnum && color >= 0 && color < 256, 4, "expected `color` to be a number within [0, 255]");
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epd_draw_hline(x, y, length, color, fb);
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return 0;
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}
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static int draw_vline (lua_State *L) {
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int x, y, length, color;
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int isnum;
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x = lua_tonumberx(L, 1, &isnum);
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luaL_argcheck(L, isnum, 1, "expected `x` to be a number");
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y = lua_tonumberx(L, 2, &isnum);
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luaL_argcheck(L, isnum, 2, "expected `y` to be a number");
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length = lua_tonumberx(L, 3, &isnum);
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luaL_argcheck(L, isnum, 3, "expected `length` to be a number");
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color = lua_tonumberx(L, 4, &isnum);
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luaL_argcheck(L, isnum && color >= 0 && color < 256, 4, "expected `color` to be a number within [0, 255]");
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epd_draw_vline(x, y, length, color, fb);
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return 0;
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}
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static int draw_circle (lua_State *L) {
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int x, y, radius, color;
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int isnum;
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x = lua_tonumberx(L, 1, &isnum);
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luaL_argcheck(L, isnum, 1, "expected `x` to be a number");
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y = lua_tonumberx(L, 2, &isnum);
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luaL_argcheck(L, isnum, 2, "expected `y` to be a number");
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radius = lua_tonumberx(L, 3, &isnum);
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luaL_argcheck(L, isnum, 3, "expected `radius` to be a number");
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color = lua_tonumberx(L, 4, &isnum);
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luaL_argcheck(L, isnum && color >= 0 && color < 256, 4, "expected `color` to be a number within [0, 255]");
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epd_draw_circle(x, y, radius, color, fb);
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return 0;
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}
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static int fill_circle (lua_State *L) {
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int x, y, radius, color;
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int isnum;
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x = lua_tonumberx(L, 1, &isnum);
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luaL_argcheck(L, isnum, 1, "expected `x` to be a number");
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y = lua_tonumberx(L, 2, &isnum);
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luaL_argcheck(L, isnum, 2, "expected `y` to be a number");
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radius = lua_tonumberx(L, 3, &isnum);
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luaL_argcheck(L, isnum, 3, "expected `radius` to be a number");
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color = lua_tonumberx(L, 4, &isnum);
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luaL_argcheck(L, isnum && color >= 0 && color < 256, 4, "expected `color` to be a number within [0, 255]");
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epd_fill_circle(x, y, radius, color, fb);
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return 0;
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}
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static int draw_rect (lua_State *L) {
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int x1, y1, x2, y2, color;
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int isnum;
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x1 = lua_tonumberx(L, 1, &isnum);
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luaL_argcheck(L, isnum, 1, "expected `x1` to be a number");
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y1 = lua_tonumberx(L, 2, &isnum);
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luaL_argcheck(L, isnum, 2, "expected `y1` to be a number");
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x2 = lua_tonumberx(L, 3, &isnum);
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luaL_argcheck(L, isnum, 3, "expected `x2` to be a number");
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y2 = lua_tonumberx(L, 4, &isnum);
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luaL_argcheck(L, isnum, 4, "expected `y2` to be a number");
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color = lua_tonumberx(L, 5, &isnum);
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luaL_argcheck(L, isnum && color >= 0 && color < 256, 5, "expected `color` to be a number within [0, 255]");
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EpdRect rect = {
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.x = x1,
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.y = y1,
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.width = x2 - x1,
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.height = y2 - y1
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};
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epd_draw_rect(rect, color, fb);
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return 0;
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}
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static int fill_rect (lua_State *L) {
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int x1, y1, x2, y2, color;
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int isnum;
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x1 = lua_tonumberx(L, 1, &isnum);
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luaL_argcheck(L, isnum, 1, "expected `x1` to be a number");
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y1 = lua_tonumberx(L, 2, &isnum);
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luaL_argcheck(L, isnum, 2, "expected `y1` to be a number");
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x2 = lua_tonumberx(L, 3, &isnum);
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luaL_argcheck(L, isnum, 3, "expected `x2` to be a number");
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y2 = lua_tonumberx(L, 4, &isnum);
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luaL_argcheck(L, isnum, 4, "expected `y2` to be a number");
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color = lua_tonumberx(L, 5, &isnum);
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luaL_argcheck(L, isnum && color >= 0 && color < 256, 5, "expected `color` to be a number within [0, 255]");
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EpdRect rect = {
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.x = x1,
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.y = y1,
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.width = x2 - x1,
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.height = y2 - y1
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};
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epd_fill_rect(rect, color, fb);
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return 0;
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}
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static int draw_triangle (lua_State *L) {
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int x1, y1, x2, y2, x3, y3, color;
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int isnum;
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x1 = lua_tonumberx(L, 1, &isnum);
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luaL_argcheck(L, isnum, 1, "expected `x1` to be a number");
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y1 = lua_tonumberx(L, 2, &isnum);
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luaL_argcheck(L, isnum, 2, "expected `y1` to be a number");
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x2 = lua_tonumberx(L, 3, &isnum);
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luaL_argcheck(L, isnum, 3, "expected `x2` to be a number");
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y2 = lua_tonumberx(L, 4, &isnum);
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luaL_argcheck(L, isnum, 4, "expected `y2` to be a number");
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x3 = lua_tonumberx(L, 5, &isnum);
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luaL_argcheck(L, isnum, 5, "expected `x3` to be a number");
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y3 = lua_tonumberx(L, 6, &isnum);
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luaL_argcheck(L, isnum, 6, "expected `y3` to be a number");
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color = lua_tonumberx(L, 7, &isnum);
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luaL_argcheck(L, isnum && color >= 0 && color < 256, 7, "expected `color` to be a number within [0, 255]");
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epd_draw_triangle(x1, y1, x2, y2, x3, y3, color, fb);
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return 0;
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}
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static int fill_triangle (lua_State *L) {
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int x1, y1, x2, y2, x3, y3, color;
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int isnum;
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x1 = lua_tonumberx(L, 1, &isnum);
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luaL_argcheck(L, isnum, 1, "expected `x1` to be a number");
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y1 = lua_tonumberx(L, 2, &isnum);
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luaL_argcheck(L, isnum, 2, "expected `y1` to be a number");
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x2 = lua_tonumberx(L, 3, &isnum);
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luaL_argcheck(L, isnum, 3, "expected `x2` to be a number");
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y2 = lua_tonumberx(L, 4, &isnum);
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luaL_argcheck(L, isnum, 4, "expected `y2` to be a number");
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x3 = lua_tonumberx(L, 5, &isnum);
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luaL_argcheck(L, isnum, 5, "expected `x3` to be a number");
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y3 = lua_tonumberx(L, 6, &isnum);
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luaL_argcheck(L, isnum, 6, "expected `y3` to be a number");
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color = lua_tonumberx(L, 7, &isnum);
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luaL_argcheck(L, isnum && color >= 0 && color < 256, 7, "expected `color` to be a number within [0, 255]");
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epd_fill_triangle(x1, y1, x2, y2, x3, y3, color, fb);
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return 0;
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}
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static int update (lua_State *L) {
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int temperature = 25;
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epd_poweron();
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epd_hl_update_screen(&hl, MODE_GC16, temperature);
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epd_poweroff();
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return 0;
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}
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static const struct luaL_Reg paper[] = {
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{"init", init},
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{"clear", clear},
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{"get_width", get_width},
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{"get_height", get_height},
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{"set_rotation", set_rotation},
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{"get_rotation", get_rotation},
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{"draw_pixel", draw_pixel},
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{"draw_line", draw_line},
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{"draw_hline", draw_hline},
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{"draw_vline", draw_vline},
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{"draw_circle", draw_circle},
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{"fill_circle", fill_circle},
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{"draw_rect", draw_rect},
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{"fill_rect", fill_rect},
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{"draw_triangle", draw_triangle},
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{"fill_triangle", fill_triangle},
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{"update", update},
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{NULL, NULL},
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};
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int luaopen_paper (lua_State *L) {
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luaL_newlib(L, paper);
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return 1;
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}
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