Using keyboard letters

[moozer]

Is it possible to make a config where e.g pressing the "b" key on the keyboard maps to drawing with blue?

something like

"red Pen" = PEN (size=5 color="red");
"blue Pen" = "red Pen" (color="blue");

"Virtual core keyboard"[b] = "blue Pen";

[bk138]

Sure it is. Contributions are always welcome!

[moozer]

Ok, so I decided not to give up in advance ...
Looking through the code I find it readable even with my very rusty C skills.

You define the keys the config file reader parses. It is limited to button and modifiers (ctrl/alt/etc)

gromit-mpx/src/config.c

Lines 148 to 165 in 3f85689

	g_scanner_scope_add_symbol (scanner, 0, "PEN", (gpointer) GROMIT_PEN);
	g_scanner_scope_add_symbol (scanner, 0, "ERASER", (gpointer) GROMIT_ERASER);
	g_scanner_scope_add_symbol (scanner, 0, "RECOLOR",(gpointer) GROMIT_RECOLOR);
	g_scanner_scope_add_symbol (scanner, 1, "BUTTON1", (gpointer) 1);
	g_scanner_scope_add_symbol (scanner, 1, "BUTTON2", (gpointer) 2);
	g_scanner_scope_add_symbol (scanner, 1, "BUTTON3", (gpointer) 3);
	g_scanner_scope_add_symbol (scanner, 1, "BUTTON4", (gpointer) 4);
	g_scanner_scope_add_symbol (scanner, 1, "BUTTON5", (gpointer) 5);
	g_scanner_scope_add_symbol (scanner, 1, "SHIFT", (gpointer) 11);
	g_scanner_scope_add_symbol (scanner, 1, "CONTROL", (gpointer) 12);
	g_scanner_scope_add_symbol (scanner, 1, "META", (gpointer) 13);
	g_scanner_scope_add_symbol (scanner, 1, "ALT", (gpointer) 13);
	g_scanner_scope_add_symbol (scanner, 2, "size", (gpointer) 1);
	g_scanner_scope_add_symbol (scanner, 2, "color", (gpointer) 2);
	g_scanner_scope_add_symbol (scanner, 2, "arrowsize", (gpointer) 3);
	g_scanner_scope_add_symbol (scanner, 2, "minsize", (gpointer) 4);

In order to expand to the entire keyboard, we would need to define all keys on the keyboard.

And then in the code, start looking somewhere around here

gromit-mpx/src/input.c

Line 65 in 3f85689

if (gdk_device_get_source(device) != GDK_SOURCE_KEYBOARD && gdk_device_get_n_axes(device) >= 2)

[bk138]

General update: issues with Gromit-MPX can now be funded at https://issuehunt.io/r/bk138/gromit-mpx

[bk138]

@moozer Do you want e.g. 'b' to select a specific tool or act as an additional modifier to Alt,Shift,Ctrl?

[bk138]

Tentatively closing as there's requested info missing. Feel free to re-open if there's news.