Files
effector/src/core/style.hpp
T
SiandClaude Opus 5 3aade6f361 Let several text stages share one named look
A picture with a title, a caption and a credit meant typing the same
font, size and colour into every text stage, and changing the look meant
typing them all again. A project now holds named styles: a stage follows
one, and editing it moves every stage that follows it at once.

The front-ends learn nothing effect-specific. A ParamSpec can be marked
.styled(), saying a style carries it rather than the stage, and
Effect::styleKind() names the pool it comes from -- so styleSpecs(kind)
is to a style what params() is to a stage, and a second text-ish effect
would slot into the styles that already exist. The look is what a style
carries; the words and the placement stay on the stage, which is what
lets two stages share a typography in two different corners.

stageValues() resolves one in a single place, and a stage keeps a full
set of values of its own beside the style, so switching it to Custom,
dropping the style, or opening the project in a build that does not know
it renders exactly the same picture. A style moves stages together; it
never holds the only copy of anything.

The command line builds no styles and passes none, so it renders what it
always did.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-19 21:55:55 +02:00

40 lines
1.5 KiB
C++

#pragma once
#include <string>
#include <vector>
#include "core/params.hpp"
namespace effector {
// A named set of formatting values, shared by every stage that follows it.
//
// A style carries only the params an effect marked styled() -- the look, never
// the placement -- so several text stages can share one typography while each
// keeps its own words and its own corner of the canvas. Changing the style is
// the point: it changes every stage pointing at it at once.
struct Style {
std::string kind; // the pool, as Effect::styleKind() names it
std::string name; // unique within a kind, never empty
ParamValues values; // the styled params only
};
using StyleSet = std::vector<Style>;
// The styled specs of a kind: every registered effect answering that kind
// contributes its styled params, the first declaration of a key winning. This
// is to a style what Effect::params() is to a stage -- the only thing the
// interface and the project file know about what a style holds -- so an empty
// or unknown kind gives an empty list.
std::vector<ParamSpec> styleSpecs(const std::string& kind);
// A fresh set of values for a style of that kind: every styled param at the
// default its effect declares, the way Effect::defaults() fills a stage.
ParamValues styleDefaults(const std::string& kind);
// The style of that name in that pool, or nullptr. A stage naming a style that
// is not there simply stands on its own values.
const Style* findStyle(const StyleSet& styles, const std::string& kind, const std::string& name);
} // namespace effector