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vt: add color data getters to render state

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Add individual color data kinds to GhosttyRenderStateData so callers
can query background, foreground, cursor color, cursor-color presence,
and the full 256-color palette through ghostty_render_state_get()
without using the sized-struct colors API.

COLOR_CURSOR returns GHOSTTY_INVALID_VALUE when no explicit cursor
color is set; callers can check COLOR_CURSOR_HAS_VALUE first.
This commit is contained in:
Mitchell Hashimoto
2026-03-20 08:57:16 -07:00
parent 6ae17a02af
commit 60ea2d76d4
2 changed files with 37 additions and 0 deletions
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17
include/ghostty/vt/render.h
View File

@@ -126,6 +126,23 @@ typedef enum {
* It is unsafe to use row data after updating the render state.
* */
GHOSTTY_RENDER_STATE_DATA_ROW_ITERATOR = 4,
/** Default/current background color (GhosttyColorRgb). */
GHOSTTY_RENDER_STATE_DATA_COLOR_BACKGROUND = 5,
/** Default/current foreground color (GhosttyColorRgb). */
GHOSTTY_RENDER_STATE_DATA_COLOR_FOREGROUND = 6,
/** Cursor color when explicitly set by terminal state (GhosttyColorRgb).
* Returns GHOSTTY_INVALID_VALUE if no explicit cursor color is set;
* use COLOR_CURSOR_HAS_VALUE to check first. */
GHOSTTY_RENDER_STATE_DATA_COLOR_CURSOR = 7,
/** Whether an explicit cursor color is set (bool). */
GHOSTTY_RENDER_STATE_DATA_COLOR_CURSOR_HAS_VALUE = 8,
/** The active 256-color palette (GhosttyColorRgb[256]). */
GHOSTTY_RENDER_STATE_DATA_COLOR_PALETTE = 9,
} GhosttyRenderStateData;
/**

20
src/terminal/c/render.zig
View File

@@ -60,6 +60,11 @@ pub const Data = enum(c_int) {
rows = 2,
dirty = 3,
row_iterator = 4,
color_background = 5,
color_foreground = 6,
color_cursor = 7,
color_cursor_has_value = 8,
color_palette = 9,
/// Output type expected for querying the data of the given kind.
pub fn OutType(comptime self: Data) type {
@@ -68,6 +73,9 @@ pub const Data = enum(c_int) {
.cols, .rows => size.CellCountInt,
.dirty => Dirty,
.row_iterator => RowIterator,
.color_background, .color_foreground, .color_cursor => colorpkg.RGB.C,
.color_cursor_has_value => bool,
.color_palette => [256]colorpkg.RGB.C,
};
}
};
@@ -177,6 +185,18 @@ fn getTyped(
.dirty = row_data.items(.dirty),
};
},
.color_background => out.* = state.state.colors.background.cval(),
.color_foreground => out.* = state.state.colors.foreground.cval(),
.color_cursor => {
const cursor = state.state.colors.cursor orelse return .invalid_value;
out.* = cursor.cval();
},
.color_cursor_has_value => out.* = state.state.colors.cursor != null,
.color_palette => {
for (&out.*, state.state.colors.palette) |*dst, src| {
dst.* = src.cval();
}
},
}
return .success;