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module main import gg import gx import os struct App { mut: ctx &gg.Context = unsafe { nil } img gg.Image file_name string } const ( win_width = 800 win_height = 600 ) fn main() { println(os.args.len) if os.args.len < 1 { println("Usage: imgview <filename>.png/.jpg/.jpeg") return } else { mut file_name := os.args[1] mut app := &App{ ctx: 0, file_name: file_name } app.ctx = gg.new_context( bg_color: gx.white width: win_width height: win_height create_window: true window_title: "imgview - ${file_name}" frame_fn: frame user_data: app init_fn: init ) app.ctx.run() } } fn init(mut app &App) { app.img = app.ctx.create_image(os.resource_abs_path(app.file_name)) } fn (app &App) draw() { app.ctx.draw_image(0, 0, app.img.width, app.img.height, app.img) } fn frame(app &App) { app.ctx.begin() app.draw() app.ctx.end() }
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