trueno/src/ui/autoedit.jai
2026-08-02 11:42:00 +03:00

180 lines
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#scope_file
#import "String";
autoedit_scrolls : Table(u64, float);
loc_to_key :: (line: s32) -> string {
log_debug("Creating key: %", line);
return tprint("%", line);
}
Autoedit_Conf :: struct {
Kind :: enum {
COLOR;
SLIDER;
DEFAULT;
}
kind: Kind = .DEFAULT;
min: string = "0";
max: string = "100";
step: string = "1";
}
note_to_autoedit_conf :: (notes: []string) -> Autoedit_Conf {
if notes.count == 0 {
return .{kind = .DEFAULT};
}
note := notes[0];
note_parts := split(note,",");
assert(note_parts.count > 0, "Note has to have a part");
if note_parts[0] == "Slider" {
assert(note_parts.count == 4, "Slider must have min, max and step.");
return .{
kind = .SLIDER,
min = note_parts[1],
max = note_parts[2],
step = note_parts[3]
};
} else if note_parts[0] == "Color" {
return .{kind = .COLOR};
} else if note_parts[0] == "Input" {
if note_parts.count == 1 {
return .{
kind = .DEFAULT
};
} else if note_parts.count == 3 {
return .{
kind = .DEFAULT,
min = note_parts[1],
max = note_parts[2]
};
}
assert(false, "Input must have either 1 or 3 parts");
}
return .{};
}
// Types we can generate an editor widget for. Anything else (nested structs,
// arrays, the '#as using base' of an entity, ...) is skipped entirely.
autoedit_supports_type :: (type: *Type_Info) -> bool {
return type == type_info(float) || type == type_info(s32) || type == type_info(bool)
|| type == type_info(Vector3) || type == type_info(string);
}
// Widgets that need a GetRect id get one per field. Two autoedit panels can be
// on screen at once (the world config and an entity's fields), so the id is
// namespaced by the caller's identifier to keep the two sets apart.
autoedit_widget_id :: (identifier: s32, field_index: int) -> s32 {
return identifier * 1000 + cast(s32) field_index;
}
// A text input hands back a view into the widget's own buffer, so the value has
// to be copied out on every keystroke. The previous copy is freed only when this
// same helper allocated it and the field still points at it: a field's starting
// value is usually a literal from the struct definition, which must not be freed.
autoedit_owned_text : Table(*string, string);
autoedit_set_text :: (field: *string, text: string) -> string {
found, previous := table_find(*autoedit_owned_text, field);
if found && previous.data == field.data free(previous);
result := copy_string(text);
table_set(*autoedit_owned_text, field, result);
return result;
}
input_code_from_type_and_notes :: (name: string, type: *Type_Info, notes: []string, index: int) -> string {
autoconf := note_to_autoedit_conf(notes);
builder : String_Builder;
// Each field resets the row height, so a field that wants a taller widget can
// just set it and let the trailing advance pick it up.
print_to_builder(*builder, "r.h = ui_h(4,0);\n");
print_to_builder(*builder, "GR.label(r, \"%\", *t_label_left(theme));\n", name);
print_to_builder(*builder, "r.y += r.h;\n");
if type == type_info(bool) {
print_to_builder(*builder, "if GR.button(r, ifx value.% then \"true\" else \"false\", *t_button_selectable(theme, value.%), autoedit_widget_id(identifier, %)) then value.% = !value.%;\n",
name, name, index, name, name);
} else if type == type_info(float) || type == type_info(s32) {
if autoconf.kind == .SLIDER {
print_to_builder(*builder, "GR.slider(r, *value.%, %, %, %, *theme.slider_theme);\n", name, autoconf.min, autoconf.max, autoconf.step);
} else {
print_to_builder(*builder, "GR.number_input(r, tprint(\"\%\", value.%), *value.%, %, %, *number_theme);\n", name, name, autoconf.min, autoconf.max);
}
} else if type == type_info(string) {
// Roomier than the other widgets: text fields hold a sentence, not a number.
print_to_builder(*builder, "r.h = ui_h(7,0);\n");
print_to_builder(*builder, "{\n");
print_to_builder(*builder, "action, _, text_state := GR.text_input(r, value.%, *theme.text_input_theme, autoedit_widget_id(identifier, %));\n", name, index);
print_to_builder(*builder, "if (action & .TEXT_MODIFIED) || (action & .ENTERED) value.% = autoedit_set_text(*value.%, text_state.text);\n", name, name);
print_to_builder(*builder, "}\n");
} else if type == type_info(Vector3) {
if autoconf.kind == .DEFAULT {
print_to_builder(*builder, "{\n");
print_to_builder(*builder, "orig_w := r.w; orig_x := r.x; r.w = r.w / 3;\n");
print_to_builder(*builder, "GR.number_input(r, tprint(\"\%\", value.%.x), *value.%.x, -100, 100, *number_theme);\n", name, name);
print_to_builder(*builder, "r.x += r.w;\n");
print_to_builder(*builder, "GR.number_input(r, tprint(\"\%\", value.%.y), *value.%.y, -100, 100, *number_theme);\n", name, name);
print_to_builder(*builder, "r.x += r.w;\n");
print_to_builder(*builder, "GR.number_input(r, tprint(\"\%\", value.%.z), *value.%.z, -100, 100, *number_theme);\n", name, name);
print_to_builder(*builder, "r.w = orig_w; r.x = orig_x;\n");
print_to_builder(*builder, "}\n");
} else if autoconf.kind == .COLOR {
print_to_builder(*builder, "if GR.button(r, \"Edit color\", *t_button_color(theme, .{value.%.x, value.%.y, value.%.z, 1.0}), autoedit_widget_id(identifier, %)) then cur_edit_color = *value.%;\n", name, name, name, index, name);
}
}
print_to_builder(*builder, "r.y += r.h;\n");
return builder_to_string(*builder);
}
cur_edit_color : *Vector3 = null;
color_edit_already_active : bool = false;
#scope_export
// Generates code automatically to edit a struct consisting of simple fields.
autoedit :: (rect: GR.Rect, value: *$T, theme: *GR.Overall_Theme, identifier: s32 = 0, loc := #caller_location) {
hash := GR.get_hash(loc, identifier);
scroll_val := find_or_add(*autoedit_scrolls, hash);
number_theme : GR.Number_Input_Theme;
generate_autoedit_code :: () -> string {
builder : String_Builder;
ti := type_info(T);
#assert #run type_info(T).type == .STRUCT "Autoedit only works for structs";
for ti.members {
if it.flags & .CONSTANT continue;
if it.flags & .USING continue; // e.g. an entity's Entity base
if !autoedit_supports_type(it.type) continue;
print_to_builder(*builder, "%\n", input_code_from_type_and_notes(it.name, it.type, it.notes, it_index));
}
return builder_to_string(*builder);
}
region, r := GR.begin_scrollable_region(rect, *theme.scrollable_region_theme);
r.y -= scroll_val.*;
r.h = ui_h(4,0);
if !cur_edit_color {
#insert #run,stallable generate_autoedit_code();
color_edit_already_active = false;
} else {
r.h = ui_h(50,0);
applied, drag, state := GR.color_picker(r, cur_edit_color);
if !color_edit_already_active {
GR.set_original_and_current_color_rgb(state, cur_edit_color.*);
color_edit_already_active = true;
}
if applied then cur_edit_color = null;
}
r.y += ui_h(8,0);
GR.end_scrollable_region(region, r.x + r.w, r.y, scroll_val);
}