55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
// Touch panel reads. Coordinates are calibrated and rotated by LuaApp::mapTouch;
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// the raw ADC pair is exposed separately because calibration cannot use itself.
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#include "../bindings.h"
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#include "../lua_app.h"
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static int l_input_getTouch(lua_State* L) {
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LuaApp* owner = app(L);
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if (!owner->touch.touched()) {
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lua_pushnil(L);
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return 1;
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}
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TS_Point point = owner->touch.getPoint();
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int16_t x, y;
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LuaApp::mapTouch(owner->tft, point, x, y);
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lua_pushinteger(L, x);
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lua_pushinteger(L, y);
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return 2;
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}
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static int l_input_getRawTouch(lua_State* L) {
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LuaApp* owner = app(L);
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if (!owner->touch.touched()) {
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lua_pushnil(L);
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return 1;
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}
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TS_Point point = owner->touch.getPoint();
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lua_pushinteger(L, point.y);
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lua_pushinteger(L, point.x);
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return 2;
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}
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static int l_input_touched(lua_State* L) {
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lua_pushboolean(L, app(L)->touch.touched());
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return 1;
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}
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void registerInput(lua_State* L) {
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static const luaL_Reg lib[] = {
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// --- Current touch point, calibrated and rotated.
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// @return integer|nil X, or nil when the panel is not touched.
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// @return integer|nil Y.
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{"getTouch", l_input_getTouch},
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// --- Current touch point as raw ADC readings, for calibration.
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// @return integer|nil X, or nil when the panel is not touched.
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// @return integer|nil Y.
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{"getRawTouch", l_input_getRawTouch},
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// --- Whether the panel is being touched.
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// @return boolean
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{"touched", l_input_touched},
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{nullptr, nullptr}};
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luaL_newlib(L, lib);
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lua_setglobal(L, "input");
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}
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