From 3d27093a45116cc0ecbf1b568b9cc5efed98e2a3 Mon Sep 17 00:00:00 2001 From: mbkma Date: Tue, 23 Apr 2019 21:07:07 +0200 Subject: mp-equation: add pre-defined physical constants MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This adds some fundamental physical constants: - Velocity of Light "c₀", 299,792,458 m/s - Magnetic constant, "μ₀", 1.2566370614×10⁻ N/A² - Electric constant, "ε₀", 8.85418782×10⁻¹² s⁴A²/m³kg - Newtonian constant of gravitation, "G", 6.67408×10⁻¹¹ m³/(s²kg) - Planck constant, "h", 6.62607004×10⁻³⁴ m²kg/s - Elementary charge, "ｅ", 1.6021766208(98)×10⁻¹⁹ C - Electron mass, "mₑ", 9.10938356×10⁻³¹ kg - Proton mass, "mₚ", 1.672621898(21)×10⁻²⁷ kg - Avogrado constant, "Nₐ", 6.02214086×10²³ mol⁻¹ They are taken from https://en.wikipedia.org/wiki/Physical_constant#Universal_constants To insert them one would enter the corresponding symbol or use the gui. They are set to a MPNumber from string. --- src/buttons-advanced.ui | 47 +++++++++++++++++++++++++++++++++---- src/math-buttons.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++++ src/mp-equation.c | 46 +++++++++++++++++++++++++++++++++++-- 3 files changed, 148 insertions(+), 6 deletions(-) diff --git a/src/buttons-advanced.ui b/src/buttons-advanced.ui index c668b25..df93b8d 100644 --- a/src/buttons-advanced.ui +++ b/src/buttons-advanced.ui @@ -766,8 +766,8 @@ - 9 - 4 + 10 + 0 @@ -861,7 +861,7 @@ - 10 + 9 4 @@ -949,7 +949,46 @@ - + + True + True + True + + + + True + False + + + True + False + const + + + True + True + 0 + + + + + True + False + down + + + False + True + 1 + + + + + + + 10 + 4 + diff --git a/src/math-buttons.c b/src/math-buttons.c index 50b15a7..22d8570 100644 --- a/src/math-buttons.c +++ b/src/math-buttons.c @@ -45,6 +45,7 @@ struct MathButtonsPrivate GtkWidget *shift_left_menu, *shift_right_menu; GtkWidget *function_menu; + GtkWidget *const_menu; GList *superscript_toggles; GList *subscript_toggles; @@ -125,6 +126,9 @@ static ButtonData button_data[] = { {"function", NULL, FUNCTION, /* Tooltip for the additional functions button */ N_("Additional Functions")}, + {"const", NULL, FUNCTION, + /* Tooltip for the additional constant button */ + N_("Additional constants")}, {"x_pow_y", "^", FUNCTION, /* Tooltip for the exponent button */ N_("Exponent [^ or **]")}, @@ -1021,6 +1025,63 @@ function_cb(GtkWidget *widget, MathButtons *buttons) popup_button_menu(widget, GTK_MENU(buttons->priv->function_menu)); } +static void +insert_const_cb(GtkWidget *widget, MathButtons *buttons) +{ + math_equation_insert(buttons->priv->equation, g_object_get_data(G_OBJECT(widget), "const")); +} + + +void const_cb(GtkWidget *widget, MathButtons *buttons); +G_MODULE_EXPORT +void +const_cb(GtkWidget *widget, MathButtons *buttons) +{ + if (!buttons->priv->const_menu) { + gint i; + GtkWidget *menu; + struct + { + gchar *name, *constant; + } constants[] = + { + { /* Tooltip for the c₀ component button */ + N_("Velocity of Light"), "c₀" }, + { /* Tooltip for the μ₀ component button */ + N_("Magnetic constant"), "μ₀" }, + { /* Tooltip for the ε₀ button */ + N_("Electric constant"), "ε₀" }, + { /* Tooltip for the G button */ + N_("Newtonian constant of gravitation"), "G" }, + { /* Tooltip for the h button */ + N_("Planck constant"), "h" }, + { /* Tooltip for the ｅ button */ + N_("Elementary charge"), "ｅ" }, + { /* Tooltip for the mₑ button */ + N_("Electron mass"), "mₑ" }, + { /* Tooltip for the mₚ button */ + N_("Proton mass"), "mₚ" }, + { /* Tooltip for the Nₐ button */ + N_("Avogrado constant"), "Nₐ" }, + { NULL, NULL } + }; + + menu = buttons->priv->const_menu = gtk_menu_new(); + gtk_menu_set_reserve_toggle_size(GTK_MENU(menu), FALSE); + + for (i = 0; constants[i].name != NULL; i++) { + GtkWidget *item; + + item = gtk_menu_item_new_with_label(_(constants[i].name)); + g_object_set_data(G_OBJECT(item), "const", g_strdup(constants[i].constant)); + gtk_menu_shell_append(GTK_MENU_SHELL(menu), item); + g_signal_connect(item, "activate", G_CALLBACK(insert_const_cb), buttons); + gtk_widget_show(item); + } + } + + popup_button_menu(widget, GTK_MENU(buttons->priv->const_menu)); +} void factorize_cb(GtkWidget *widget, MathButtons *buttons); G_MODULE_EXPORT diff --git a/src/mp-equation.c b/src/mp-equation.c index b80408e..fd3ea5a 100644 --- a/src/mp-equation.c +++ b/src/mp-equation.c @@ -18,7 +18,19 @@ static int variable_is_defined(ParserState *state, const char *name) { /* FIXME: Make more generic */ - if (strcmp(name, "e") == 0 || strcmp(name, "i") == 0 || strcmp(name, "π") == 0 || strcmp(name, "pi") == 0) + if (strcmp(name, "e") == 0 || + strcmp(name, "i") == 0 || + strcmp(name, "π") == 0 || + strcmp(name, "pi") == 0 || + strcmp(name, "c₀") == 0 || + strcmp(name, "μ₀") == 0 || + strcmp(name, "ε₀") == 0 || + strcmp(name, "G") == 0 || + strcmp(name, "h") == 0 || + strcmp(name, "ｅ") == 0 || + strcmp(name, "mₑ") == 0 || + strcmp(name, "mₚ") == 0 || + strcmp(name, "Nₐ") == 0) return 1; if (state->options->variable_is_defined) return state->options->variable_is_defined(name, state->options->callback_data); @@ -37,6 +49,24 @@ get_variable(ParserState *state, const char *name, MPNumber *z) mp_get_i(z); else if (strcmp(name, "π") == 0 || strcmp(name, "pi") == 0) mp_get_pi(z); + else if (strcmp(name, "c₀") == 0) + mp_set_from_string("299792458", 10, z); /* velocity of light */ + else if (strcmp(name, "μ₀") == 0) + mp_set_from_string("0.0000012566370614", 10, z); /* magnetic constant */ + else if (strcmp(name, "ε₀") == 0) + mp_set_from_string("0.000000000008854187817", 10, z); /* electric constant */ + else if (strcmp(name, "G") == 0) + mp_set_from_string("0.0000000000667310", 10, z); /* Newtonian constant of gravitation */ + else if (strcmp(name, "h") == 0) + mp_set_from_string("0.000000000000000000000000000000000662606876", 10, z); /* Planck constant */ + else if (strcmp(name, "ｅ") == 0) + mp_set_from_string("0.0000000000000000001602176462", 10, z); /* elementary charge */ + else if (strcmp(name, "mₑ") == 0) + mp_set_from_string("0.000000000000000000000000000000910938188", 10, z); /* electron mass */ + else if (strcmp(name, "mₚ") == 0) + mp_set_from_string("0.00000000000000000000000000167262158", 10, z); /* proton mass */ + else if (strcmp(name, "Nₐ") == 0) + mp_set_from_string("602214199000000000000000", 10, z); /* Avogrado constant */ else if (state->options->get_variable) result = state->options->get_variable(name, z, state->options->callback_data); else @@ -49,7 +79,19 @@ static void set_variable(ParserState *state, const char *name, const MPNumber *x) { // Reserved words, e, π, mod, and, or, xor, not, abs, log, ln, sqrt, int, frac, sin, cos, ... - if (strcmp(name, "e") == 0 || strcmp(name, "i") == 0 || strcmp(name, "π") == 0 || strcmp(name, "pi") == 0) + if (strcmp(name, "e") == 0 || + strcmp(name, "i") == 0 || + strcmp(name, "π") == 0 || + strcmp(name, "pi") == 0 || + strcmp(name, "c₀") == 0 || + strcmp(name, "μ₀") == 0 || + strcmp(name, "ε₀") == 0 || + strcmp(name, "G") == 0 || + strcmp(name, "h") == 0 || + strcmp(name, "ｅ") == 0 || + strcmp(name, "mₑ") == 0 || + strcmp(name, "mₚ") == 0 || + strcmp(name, "Nₐ") == 0) return; // FALSE if (state->options->set_variable) -- cgit v1.2.1