buffer_line_y_difference
September 8th 2024
Compute the signed vertical pixel distance between the top of two lines
Signature
f32
buffer_line_y_difference(Application_Links* app,
Buffer_ID buffer_id,
f32 width,
Face_ID face_id,
i64 line_a,
i64 line_b);Parameters
app
the standard custom layer context pointer
buffer_id
the id of the buffer who's layout will be measured
width
the width parameter of the layout, passed to layout rules as a recommended wrap point
face_id
the face parameter of the layout, passed to layout rules as a recommended face
line_a
the line number of the line 'A' in the subtraction top(A) - top(B)
line_b
the line number of the line 'B' in the subtraction top(A) - top(B)
Return
the signed distance between the lines in pixels on success, when the buffer exists and contains both given line numbers
Details
Line numbers are 1 based.