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reasampler/src/core/instrument/ui/sample_chrome.h
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#pragma once
// sample_chrome.h — interior geometry of the Sample face's CHROME band: the toolbar row
// (title + the whole right-anchored control run + Browse) over the strip row, which the
// piano strip has to itself. Reads the band rect the allocator hands it (sample_bands) and
// never allocates vertical space of its own. The run is right-anchored and the title takes
// the remainder, so a member added to the run costs the title, never the window's floor.
#include "core/instrument/ui/editor_geometry.h" // Rect
namespace reasampler::instrument::ui {
inline constexpr int kNavButtonWidth = 62; // the Browse toolbar button
inline constexpr int kBakeButtonWidth = 54; // the resample-bake trigger
// Every interactive rect inside the chrome band, in one pass so draw and hit-test cannot
// derive them differently. The toolbar's fixed run is right-anchored and the title takes
// what is left of that row; the strip row carries nothing but the strip, so the strip grows
// with the window in both directions.
struct ChromeRects {
Rect toolbar; // full-width top row
Rect title; // the title text slot: the toolbar left of the control run
// The bake Hold cell. Its width is RESERVED unconditionally even though the control is
// only drawn for a looped Gate sound (bake_plan.h's bakeWindowNeedsHold). It is the
// LEFTMOST member of the right-anchored run, so no other member moves either way — what
// the reservation buys is a title slot that holds still: dialling a loop in or out would
// otherwise re-measure and re-ellipsize the capture name. The cost is ~62 px of dead
// toolbar in the common non-looped case.
Rect holdCell; // ---- the right-anchored run, left to right ----
Rect holdKnob;
Rect holdLabel;
Rect bake;
Rect preview;
Rect velCell; // preview-velocity knob cell (knob + label band)
Rect velKnob;
Rect velLabel;
// The sustain loop's enable, ONE button. Immediately left of the channel selector because
// it is the same class of control — a playback mode of the loaded capture — and because the
// run is right-anchored, so the title slot absorbs its width and the editor's floor does
// not move.
Rect loop;
Rect channel; // the mono/stereo MODE selector: its label reads the current mode
Rect navBrowse;
Rect controls; // full-width second row
Rect rootStrip; // the piano strip: the whole row, inset only by the shared band pad
};
// `knobSize` is the deck knob square, passed in so this module does not depend on knob_deck.
ChromeRects chromeRects(const Rect& chrome, int knobSize);
// A right-pointing play triangle centered in the preview button: the button's whole label.
// Three vertices, handed straight to one filled-triangle draw. Drawn rather than embedded as a
// bitmap so it inherits the palette role of whatever interaction state the button is in.
struct PreviewGlyph {
int leftX = 0; // the vertical edge
int topY = 0;
int bottomY = 0;
int apexX = 0; // the point, on the button's vertical centre line
int apexY = 0;
bool empty() const { return apexX <= leftX || bottomY <= topY; }
};
// Sized off the button's shorter dimension and clamped, so the glyph stays legible in a squat
// button and never outgrows a generous one. An unusably small button yields an empty glyph.
PreviewGlyph previewGlyph(const Rect& button);
} // namespace reasampler::instrument::ui