daniel
ae41cad4f5
Register toggle/activate/tag/untag/show-both actions driving the D2 shell and D3 model; reapply saved active mode on project load via a persist load-signal seam. Shared guidString helper; pure nextModeId unit-tested.
222 lines
10 KiB
C++
222 lines
10 KiB
C++
// actions.cpp — the Design View action family (Phase D4). See actions.h.
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//
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// Compiled into the reaper_reasampler MODULE. Includes reaper_plugin_functions.h
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// WITHOUT REAPERAPI_IMPLEMENT — main.cpp is the one TU that defines the API pointers
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// (CLAUDE.md §contract). The action ids are minted from FOREVER-STABLE strings (the
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// same CEREBELLUM_REASAMPLER_ family prefix main.cpp uses); user keybindings key off
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// them, so they must never change after ship.
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//
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// Each action:
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// 1. mutates the session's ViewModeModel (membership tag/untag/show-both, or the
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// active mode via toggle/activate) — the pure D1 state,
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// 2. reapplies the active mode through the D2 view shell (applyMode) so the change
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// takes visible effect immediately (tagging a track into Design while in Arrange
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// parks it right away; a mode change re-partitions and re-parks in one step).
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//
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// Selection-driven mutations iterate the CURRENT REAPER track selection
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// (CountSelectedTracks/GetSelectedTrack — both ignore the master, which is correct:
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// the master is never tagged) and resolve each track to its canonical GUID key via
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// the shared guidString helper, so the keys match exactly what the D2 shell / view
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// tree key on (the cross-module key contract).
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#include "actions.h"
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#include <string>
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#include <vector>
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#include "persist.h" // ReaSamplerSession (owns view() model)
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#include "track_guid.h" // shared MediaTrack* -> canonical GUID key
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#include "view.h" // applyMode (D2 shell)
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#include "view_mode_model.h"
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#include "reaper_plugin.h" // reaper_plugin_info_t, gaccel_register_t (full defs)
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#define REAPERAPI_MINIMAL
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#define REAPERAPI_WANT_CountSelectedTracks
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#define REAPERAPI_WANT_GetSelectedTrack
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#include "reaper_plugin_functions.h"
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namespace reasampler {
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namespace {
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// FOREVER-STABLE action-id strings. Same family prefix as main.cpp's capture/panel
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// actions; each full string is minted into a persistent command id and user
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// keybindings key off it — NEVER change these after ship.
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constexpr const char* kIdToggleMode = "CEREBELLUM_REASAMPLER_VIEW_TOGGLE_MODE";
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constexpr const char* kIdActivateArrange = "CEREBELLUM_REASAMPLER_VIEW_ACTIVATE_ARRANGE";
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constexpr const char* kIdActivateDesign = "CEREBELLUM_REASAMPLER_VIEW_ACTIVATE_DESIGN";
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constexpr const char* kIdTagDesign = "CEREBELLUM_REASAMPLER_VIEW_TAG_DESIGN";
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constexpr const char* kIdTagArrange = "CEREBELLUM_REASAMPLER_VIEW_TAG_ARRANGE";
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constexpr const char* kIdUntag = "CEREBELLUM_REASAMPLER_VIEW_UNTAG";
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constexpr const char* kIdShowBoth = "CEREBELLUM_REASAMPLER_VIEW_SHOW_BOTH";
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// The live session the actions mutate. Set once by designViewRegisterActions and
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// read by the hookcommand handler. Not owned here (main.cpp owns g_session).
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ReaSamplerSession* g_session = nullptr;
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// Minted command ids (0 until registration succeeds). Compared in the handler.
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int g_cmdToggleMode = 0;
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int g_cmdActivateArrange = 0;
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int g_cmdActivateDesign = 0;
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int g_cmdTagDesign = 0;
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int g_cmdTagArrange = 0;
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int g_cmdUntag = 0;
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int g_cmdShowBoth = 0;
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// gaccel storage must outlive registration — REAPER holds each pointer until we
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// mirror-unregister it. One per action.
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gaccel_register_t g_accelToggleMode{};
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gaccel_register_t g_accelActivateArrange{};
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gaccel_register_t g_accelActivateDesign{};
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gaccel_register_t g_accelTagDesign{};
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gaccel_register_t g_accelTagArrange{};
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gaccel_register_t g_accelUntag{};
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gaccel_register_t g_accelShowBoth{};
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// Mints a command id from a stable string and registers its gaccel (Actions-list
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// entry with `desc`). Returns the command id (0 on failure). The gaccel storage is
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// caller-owned and must outlive the module (the file-scope g_accel* above).
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int registerAction(reaper_plugin_info_t* rec, const char* stableId,
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gaccel_register_t& accel, const char* desc) {
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const int cmd = rec->Register("command_id", (void*)stableId);
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if (cmd) {
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accel.accel.cmd = cmd;
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accel.desc = desc;
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rec->Register("gaccel", (void*)&accel);
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}
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return cmd;
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}
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// Collects the canonical GUID keys of the current track selection. Empty if nothing
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// is selected. CountSelectedTracks/GetSelectedTrack ignore the master (SDK), which is
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// exactly right — the master is never a tagged leaf.
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std::vector<std::string> selectedTrackGuids() {
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std::vector<std::string> guids;
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const int n = CountSelectedTracks(nullptr); // nullptr = active project
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guids.reserve(static_cast<std::size_t>(n < 0 ? 0 : n));
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for (int i = 0; i < n; ++i) {
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MediaTrack* tr = GetSelectedTrack(nullptr, i);
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if (!tr) continue;
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std::string g = guidString(tr);
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if (!g.empty()) guids.push_back(std::move(g));
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}
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return guids;
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}
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// Reapplies the model's CURRENT active mode to the active project so a membership
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// mutation takes visible effect immediately (park/unpark/re-derive parents). Called
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// after every tag/untag/show-both. `proj = nullptr` -> REAPER's active project.
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void reapplyActiveMode() {
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applyMode(g_session->view(), g_session->view().activeModeId(), nullptr);
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}
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// -- Action bodies ---------------------------------------------------------
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// Toggle: cycle to the next mode in ordinal order (Arrange <-> Design with two
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// seeds; scales to cycle-through-all for >2 modes with no change here). applyMode
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// itself sets the model's active mode, so we only compute the target and apply.
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void doToggleMode() {
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const std::string target =
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nextModeId(g_session->view().modes(), g_session->view().activeModeId());
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if (target.empty()) return; // no modes to cycle to (degenerate)
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applyMode(g_session->view(), target, nullptr);
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}
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// Direct jump to a named mode. applyMode is a no-op (returns false, no mutation) if
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// the id is unregistered, so an absent mode fails safe.
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void doActivateMode(const std::string& modeId) {
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applyMode(g_session->view(), modeId, nullptr);
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}
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// Tag the selection's leaves into `modeId`, then reapply so the change is immediate.
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// tag() replaces any prior single-mode membership (a leaf lives in one mode; the
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// cross-mode case is show-both), matching the D1 contract.
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void doTag(const std::string& modeId) {
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for (const std::string& g : selectedTrackGuids())
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g_session->view().membership().tag(g, modeId);
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reapplyActiveMode();
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}
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// Untag the selection entirely (return each to the Arrange default). This is the
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// shared body behind both "Untag selected" and "Tag -> Arrange" (Arrange = the
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// absence of a tag), so the two actions are the same act by definition.
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void doUntag() {
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for (const std::string& g : selectedTrackGuids())
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g_session->view().membership().untag(g);
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reapplyActiveMode();
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}
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// Toggle the per-track show-both pin for the selection. Read the CURRENT pin of each
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// track and flip it independently (a mixed selection converges toward "all on" then
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// "all off" only if uniform; per-track flip is the honest semantics of a toggle on a
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// multi-selection). show-both leaves are never parked (D1), so reapply reflects the
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// change immediately.
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void doShowBoth() {
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MembershipIndex& m = g_session->view().membership();
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for (const std::string& g : selectedTrackGuids())
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m.setShowBoth(g, !m.isShowBoth(g));
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reapplyActiveMode();
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}
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} // namespace
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void designViewRegisterActions(reaper_plugin_info_t* rec, ReaSamplerSession* session) {
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g_session = session;
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// command_id -> gaccel for each. The single hookcommand that routes these lives
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// in main.cpp (one hook per extension); designViewHandleCommand services them.
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g_cmdToggleMode = registerAction(rec, kIdToggleMode, g_accelToggleMode,
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"ReaSampler: toggle Design View mode");
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g_cmdActivateArrange = registerAction(rec, kIdActivateArrange, g_accelActivateArrange,
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"ReaSampler: activate mode Arrange");
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g_cmdActivateDesign = registerAction(rec, kIdActivateDesign, g_accelActivateDesign,
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"ReaSampler: activate mode Design");
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g_cmdTagDesign = registerAction(rec, kIdTagDesign, g_accelTagDesign,
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"ReaSampler: tag selected tracks -> Design");
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g_cmdTagArrange = registerAction(rec, kIdTagArrange, g_accelTagArrange,
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"ReaSampler: tag selected tracks -> Arrange");
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g_cmdUntag = registerAction(rec, kIdUntag, g_accelUntag,
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"ReaSampler: untag selected tracks");
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g_cmdShowBoth = registerAction(rec, kIdShowBoth, g_accelShowBoth,
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"ReaSampler: show both for selected tracks");
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}
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bool designViewHandleCommand(int command) {
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if (command == 0 || !g_session) return false;
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if (command == g_cmdToggleMode) { doToggleMode(); return true; }
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if (command == g_cmdActivateArrange) { doActivateMode(kArrangeModeId); return true; }
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if (command == g_cmdActivateDesign) { doActivateMode(kDesignModeId); return true; }
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if (command == g_cmdTagDesign) { doTag(kDesignModeId); return true; }
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// Tag -> Arrange and Untag are the same act (Arrange = the absence of a tag).
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if (command == g_cmdTagArrange) { doUntag(); return true; }
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if (command == g_cmdUntag) { doUntag(); return true; }
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if (command == g_cmdShowBoth) { doShowBoth(); return true; }
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return false; // not ours — caller's hookcommand keeps looking
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}
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void designViewUnregisterActions(reaper_plugin_info_t* rec) {
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// Mirror-unregister with '-'-prefixed strings, per the contract's unload rule.
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// gaccel first, then the command_id string (reverse of registration order).
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rec->Register("-gaccel", (void*)&g_accelShowBoth);
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rec->Register("-command_id", (void*)kIdShowBoth);
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rec->Register("-gaccel", (void*)&g_accelUntag);
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rec->Register("-command_id", (void*)kIdUntag);
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rec->Register("-gaccel", (void*)&g_accelTagArrange);
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rec->Register("-command_id", (void*)kIdTagArrange);
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rec->Register("-gaccel", (void*)&g_accelTagDesign);
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rec->Register("-command_id", (void*)kIdTagDesign);
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rec->Register("-gaccel", (void*)&g_accelActivateDesign);
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rec->Register("-command_id", (void*)kIdActivateDesign);
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rec->Register("-gaccel", (void*)&g_accelActivateArrange);
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rec->Register("-command_id", (void*)kIdActivateArrange);
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rec->Register("-gaccel", (void*)&g_accelToggleMode);
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rec->Register("-command_id", (void*)kIdToggleMode);
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g_session = nullptr;
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}
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} // namespace reasampler
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