module ugui; import std::io; // TODO: this could be a bitstruct bitstruct InputEvents : uint { bool resize : 0; // window size was changed bool change_focus : 1; // window focus changed bool mouse_move : 2; // mouse was moved bool mouse_btn : 3; // mouse button pressed or released } // Window size was changed fn void! Ctx.input_window_size(&ctx, short width, short height) { if (width <= 0 || height <= 0) { return UgError.INVALID_SIZE?; } ctx.width = width; ctx.height = height; ctx.input.events.resize = true; } // Window gained/lost focus fn void Ctx.input_changefocus(&ctx, bool has_focus) { // FIXME: raylib only has an API to query the focus status so we have to // update the input flag only if the focus changed if (ctx.has_focus != has_focus) { ctx.input.events.change_focus = true; } ctx.has_focus = has_focus; } bitstruct MouseButtons : uint { bool btn_left : 0; bool btn_middle : 1; bool btn_right : 2; bool btn_4 : 3; bool btn_5 : 4; } // Mouse Button moved fn void Ctx.input_mouse_button(&ctx, MouseButtons buttons) { ctx.input.mouse.updated = ctx.input.mouse.down ^ buttons; ctx.input.mouse.down = buttons; ctx.input.events.mouse_btn = true; io::printfn( "Mouse Down: %s%s%s%s%s", buttons.btn_left ? "BTN_LEFT " : "", buttons.btn_right ? "BTN_RIGHT " : "", buttons.btn_middle ? "BTN_MIDDLE " : "", buttons.btn_4 ? "BTN_4 " : "", buttons.btn_5 ? "BTN_5 " : "" ); } // Mouse was moved, report absolute position // TODO: implement this fn void Ctx.input_mouse_abs(&ctx, short x, short y) { return; } // Mouse was moved, report relative motion fn void Ctx.input_mouse_delta(&ctx, short dx, short dy) { ctx.input.mouse.delta.x = dx; ctx.input.mouse.delta.y = dy; short mx, my; mx = ctx.input.mouse.pos.x + dx; my = ctx.input.mouse.pos.y + dy; ctx.input.mouse.pos.x = clamp(mx, 0u16, ctx.width); ctx.input.mouse.pos.y = clamp(my, 0u16, ctx.height); ctx.input.events.mouse_move = true; }