diff options
Diffstat (limited to 'v_windows/v/examples/ttf_font/example_ttf.v')
| -rw-r--r-- | v_windows/v/examples/ttf_font/example_ttf.v | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/v_windows/v/examples/ttf_font/example_ttf.v b/v_windows/v/examples/ttf_font/example_ttf.v new file mode 100644 index 0000000..02e43cd --- /dev/null +++ b/v_windows/v/examples/ttf_font/example_ttf.v @@ -0,0 +1,171 @@ +import gg +import gx +import sokol.sapp +import sokol.sgl +import x.ttf +import os + +// import math +const ( + win_width = 600 + win_height = 700 + bg_color = gx.white + font_paths = [ + os.resource_abs_path('Imprima-Regular.ttf'), + os.resource_abs_path('Graduate-Regular.ttf'), + ] +) + +// UI +struct App_data { +pub mut: + gg &gg.Context + sg_img C.sg_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() +} |