Canvas Font Integration

The canvas can now associate and select fonts dynamically using:

• plutovg_canvas_set_font_face_cache() Assigns a font cache to the canvas.

• plutovg_canvas_get_font_face_cache() Retrieves the current cache from the canvas.

• plutovg_canvas_add_font_face() Registers a font face under a family and style.

• plutovg_canvas_add_font_file() Loads and registers a font face from a file.

• plutovg_canvas_select_font_face() Selects a font face for use in drawing operations.

These APIs allow high-level font selection using family names and style flags (bold, italic), while internally managing font-face lifetimes through the cache.

Point Containment Queries

Three new functions provide hit-testing against rendering regions in user space:

• plutovg_canvas_fill_contains() Tests whether a point lies within the current fill region (ignores clip and surface).

• plutovg_canvas_stroke_contains() Tests whether a point lies within the stroked path outline.

• plutovg_canvas_clip_contains() Tests whether a point lies inside the canvas clipping region.

These APIs allow precise user interaction handling, including mouse hit-tests and visual region queries.