import gg import gx import sokol.sapp import sokol.sgl import sokol.gfx import x.ttf import os // import math const ( win_width = 600 win_height = 700 bg_color = gx.white font_paths = [ os.resource_abs_path(os.join_path('..', 'assets', 'fonts', 'Imprima-Regular.ttf')), os.resource_abs_path(os.join_path('..', 'assets', 'fonts', 'Graduate-Regular.ttf')), ] ) // UI struct App_data { pub mut: gg &gg.Context = unsafe { nil } sg_img gfx.Image init_flag bool frame_c int tf []ttf.TTF_File ttf_render []ttf.TTF_render_Sokol text_ready_flag bool mouse_x int = -1 mouse_y int = -1 } fn my_init(mut app App_data) { app.init_flag = true } fn draw_frame(mut app App_data) { cframe_txt := 'Current Frame: $app.frame_c' app.gg.begin() sgl.defaults() sgl.matrix_mode_projection() sgl.ortho(0.0, f32(sapp.width()), f32(sapp.height()), 0.0, -1.0, 1.0) sgl.c4b(0, 0, 0, 255) // black // draw a line as background sgl.begin_line_strip() sgl.v2f(10, 10) sgl.v2f(100, 100) sgl.end() // draw text only if the app is already initialized if app.init_flag == true { sgl.begin_line_strip() sgl.v2f(410, 400) sgl.v2f(510, 400) sgl.end() // update the text mut txt1 := unsafe { &app.ttf_render[0] } if app.frame_c % 2 == 0 { txt1.destroy_texture() txt1.create_text(cframe_txt, 43) txt1.create_texture() } // ----- decomment if you want text rotation ---- // txt1.bmp.angle = 3.141592 / 180 * f32(app.frame_c % 360) // txt1.draw_text_bmp(app.gg, 300, 350) // txt1.bmp.angle = 0 txt1.draw_text_bmp(app.gg, 30, 60) // block test block_txt := "Today it is a good day! Tommorow I'm not so sure :( Frame: $app.frame_c But Vwill prevail for sure, V is the way!! òàèì@ò!£$%& " txt1 = unsafe { &app.ttf_render[1] } if app.frame_c % 2 == 0 { txt1.bmp.justify = false if (app.frame_c >> 6) % 2 == 0 { // txt1.align = .left txt1.bmp.justify = true } txt1.bmp.align = .left if (app.frame_c >> 6) % 3 == 0 { txt1.bmp.align = .right } txt1.destroy_texture() txt1.create_text_block(block_txt, 500, 500, 32) txt1.create_texture() } // decomment if want block color change // txt1.bmp.color = ttf.color_multiply(0xFF00FFFF, f32(app.frame_c % 255)/255.0) // decomment if want block rotation wanted // txt1.bmp.angle = 3.141592/180 * f32(app.frame_c % 45) txt1.draw_text_bmp(app.gg, 30 + (app.frame_c >> 1) & 0xFF, 200) // draw mouse position if app.mouse_x >= 0 { txt1 = unsafe { &app.ttf_render[2] } txt1.destroy_texture() txt1.create_text('$app.mouse_x,$app.mouse_y', 25) txt1.create_texture() r := app.mouse_x % 255 g := app.mouse_y % 255 color := u32(r) << 24 | u32(g) << 16 | 0xFF txt1.bmp.color = color txt1.draw_text_bmp(app.gg, app.mouse_x, app.mouse_y) } app.frame_c++ } app.gg.end() } fn my_event_manager(mut ev gg.Event, mut app App_data) { if ev.typ == .mouse_move { app.mouse_x = int(ev.mouse_x) app.mouse_y = int(ev.mouse_y) } } [console] fn main() { mut app := &App_data{ gg: 0 } app.gg = gg.new_context( width: win_width height: win_height create_window: true window_title: 'Test TTF module' user_data: app bg_color: bg_color frame_fn: draw_frame event_fn: my_event_manager init_fn: my_init ) // load TTF fonts for font_path in font_paths { mut tf := ttf.TTF_File{} tf.buf = os.read_bytes(font_path) or { panic(err) } println('TrueTypeFont file [$font_path] len: $tf.buf.len') tf.init() println('Unit per EM: $tf.units_per_em') app.tf << tf } // TTF render 0 Frame counter app.ttf_render << &ttf.TTF_render_Sokol{ bmp: &ttf.BitMap{ tf: &app.tf[0] buf: unsafe { malloc_noscan(32000000) } buf_size: (32000000) color: 0xFF0000FF // style: .raw // use_font_metrics: true } } // TTF render 1 Text Block app.ttf_render << &ttf.TTF_render_Sokol{ bmp: &ttf.BitMap{ tf: &app.tf[1] // color : 0xFF0000_10 // style: .raw // use_font_metrics: true } } // TTF mouse position render app.ttf_render << &ttf.TTF_render_Sokol{ bmp: &ttf.BitMap{ tf: &app.tf[0] } } // setup sokol_gfx app.gg.run() }