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vt: add cursor field data getters to render state API

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Expose the cursor fields from RenderState.Cursor through the C API
via new GhosttyRenderStateData enum values. This adds getters for
visual style, visibility, blink state, password input detection,
and viewport position (x, y, wide tail).

A new GhosttyRenderStateCursorVisualStyle enum maps the Zig
cursor.Style values (bar, block, underline, block_hollow) to
stable C integer constants. Viewport position getters return
GHOSTTY_INVALID_VALUE when the cursor is not visible within
the viewport.
This commit is contained in:
Mitchell Hashimoto
2026-03-20 09:04:08 -07:00
parent 60ea2d76d4
commit d9df4154db
2 changed files with 94 additions and 0 deletions
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47
include/ghostty/vt/render.h
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@@ -102,6 +102,25 @@ typedef enum {
GHOSTTY_RENDER_STATE_DIRTY_FULL = 2,
} GhosttyRenderStateDirty;
/**
* Visual style of the cursor.
*
* @ingroup render
*/
typedef enum {
/** Bar cursor (DECSCUSR 5, 6). */
GHOSTTY_RENDER_STATE_CURSOR_VISUAL_STYLE_BAR = 0,
/** Block cursor (DECSCUSR 1, 2). */
GHOSTTY_RENDER_STATE_CURSOR_VISUAL_STYLE_BLOCK = 1,
/** Underline cursor (DECSCUSR 3, 4). */
GHOSTTY_RENDER_STATE_CURSOR_VISUAL_STYLE_UNDERLINE = 2,
/** Hollow block cursor. */
GHOSTTY_RENDER_STATE_CURSOR_VISUAL_STYLE_BLOCK_HOLLOW = 3,
} GhosttyRenderStateCursorVisualStyle;
/**
* Queryable data kinds for ghostty_render_state_get().
*
@@ -143,6 +162,34 @@ typedef enum {
/** The active 256-color palette (GhosttyColorRgb[256]). */
GHOSTTY_RENDER_STATE_DATA_COLOR_PALETTE = 9,
/** The visual style of the cursor (GhosttyRenderStateCursorVisualStyle). */
GHOSTTY_RENDER_STATE_DATA_CURSOR_VISUAL_STYLE = 10,
/** Whether the cursor is visible based on terminal modes (bool). */
GHOSTTY_RENDER_STATE_DATA_CURSOR_VISIBLE = 11,
/** Whether the cursor should blink based on terminal modes (bool). */
GHOSTTY_RENDER_STATE_DATA_CURSOR_BLINKING = 12,
/** Whether the cursor is at a password input field (bool). */
GHOSTTY_RENDER_STATE_DATA_CURSOR_PASSWORD_INPUT = 13,
/** Whether the cursor is visible within the viewport (bool).
* If false, the cursor viewport position values are undefined. */
GHOSTTY_RENDER_STATE_DATA_CURSOR_VIEWPORT_HAS_VALUE = 14,
/** Cursor viewport x position in cells (uint16_t).
* Only valid when CURSOR_VIEWPORT_HAS_VALUE is true. */
GHOSTTY_RENDER_STATE_DATA_CURSOR_VIEWPORT_X = 15,
/** Cursor viewport y position in cells (uint16_t).
* Only valid when CURSOR_VIEWPORT_HAS_VALUE is true. */
GHOSTTY_RENDER_STATE_DATA_CURSOR_VIEWPORT_Y = 16,
/** Whether the cursor is on the tail of a wide character (bool).
* Only valid when CURSOR_VIEWPORT_HAS_VALUE is true. */
GHOSTTY_RENDER_STATE_DATA_CURSOR_VIEWPORT_WIDE_TAIL = 17,
} GhosttyRenderStateData;
/**