AGG lesson 35 gsv_text rendering ASCII characters

Code

Agg::rendering_buffer & rbuf = rbuf_window ()

Agg::pixfmt_bgr24 pixf (rbuf)

Typedef agg::renderer_base renderer_base_type

Renderer_base_type renb (pixf)

Typedef agg::renderer_scanline_bin_solid renderder_scanline_type

Renderder_scanline_type rensl (renb)

Agg::rasterizer_scanline_aa ras

Agg::scanline_u8 sl

Ras.reset ()

Renb.clear (agg::rgba8 (255255255))

Agg::gsv_text txt

Agg::conv_stroke txtStroke (txt)

TxtStroke.width (3)

TxtStroke.line_cap (agg::square_cap)

Txt.flip (true); / / the lower axis of Windows is inverted.

Txt.size (20); / / text size

Txt.line_space (10); / / gsv_text can handle\ nline wrapping, setting the spacing between each line

Spacing between txt.space (10); / / characters

Txt.start_point (100,300); / / the starting position of the text is actually biased and needs to be fine-tuned

Txt.text ("http://fengyuzaitu.blog.51cto.com\nhttp://fengyuzaitu.blog.51cto.com");"

Ras.add_path (txtStroke)

Agg::render_scanlines_aa_solid (ras,sl,renb,agg::rgba8 (255,0,0))

Ras.reset ()

Note:

1 only supports rendering of ASCII characters

2 can only render horizontal characters