277 lines
6.8 KiB
V
277 lines
6.8 KiB
V
// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license
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// that can be found in the LICENSE file.
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module gg
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import gx
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import os
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import sokol
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import sokol.sapp
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import sokol.sgl
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import sokol.gfx
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//import gg.ft
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pub type FNCb fn(x voidptr)
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pub type FNEvent fn(e voidptr, x voidptr)
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pub type FNFail fn(msg string, x voidptr)
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pub type FNKeyDown fn(c sapp.KeyCode, m sapp.Modifier, x voidptr)
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pub type FNChar fn(c u32, x voidptr)
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pub struct Config {
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pub:
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width int
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height int
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use_ortho bool
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retina bool
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resizable bool
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user_data voidptr
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font_size int
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create_window bool
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// window_user_ptr voidptr
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window_title string
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borderless_window bool
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always_on_top bool
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bg_color gx.Color
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init_fn FNCb = voidptr(0)
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frame_fn FNCb = voidptr(0)
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cleanup_fn FNCb = voidptr(0)
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fail_fn FNFail = voidptr(0)
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event_fn FNEvent = voidptr(0)
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keydown_fn FNKeyDown = voidptr(0) // special case of event_fn
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char_fn FNChar = voidptr(0) // special case of event_fn
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wait_events bool // set this to true for UIs, to save power
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font_path string
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fullscreen bool
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scale f32 = 1.0 // vid needs this
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}
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pub struct Context {
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pub mut:
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scale f32 = 1.0 // will get set to 2.0 for retina, will remain 1.0 for normal
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width int
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height int
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clear_pass C.sg_pass_action
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window C.sapp_desc
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config Config
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}
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pub struct Size { pub: width int height int }
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fn gg_init_sokol_window(user_data voidptr) {
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mut g := &Context(user_data)
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desc := C.sg_desc{
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mtl_device: sapp.metal_get_device()
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mtl_renderpass_descriptor_cb: sapp.metal_get_renderpass_descriptor
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mtl_drawable_cb: sapp.metal_get_drawable
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d3d11_device: sapp.d3d11_get_device()
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d3d11_device_context: sapp.d3d11_get_device_context()
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d3d11_render_target_view_cb: sapp.d3d11_get_render_target_view
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d3d11_depth_stencil_view_cb: sapp.d3d11_get_depth_stencil_view
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}
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gfx.setup(&desc)
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sgl_desc := C.sgl_desc_t{}
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sgl.setup(&sgl_desc)
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g.scale = sapp.dpi_scale()
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// NB: on older X11, `Xft.dpi` from ~/.Xresources, that sokol uses,
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// may not be set which leads to sapp.dpi_scale reporting incorrectly 0.0
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if g.scale < 0.1 {
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g.scale = 1.0
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}
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is_high_dpi := sapp.high_dpi()
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fb_w := sapp.width()
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fb_h := sapp.height()
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println('g.scale=$g.scale is_high_dpi=$is_high_dpi fb_w=$fb_w fb_h=$fb_h')
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if g.config.init_fn != voidptr(0) {
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g.config.init_fn( g.config.user_data )
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}
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}
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fn gg_frame_fn(user_data voidptr) {
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mut g := &Context(user_data)
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if g.config.frame_fn != voidptr(0) {
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g.config.frame_fn( g.config.user_data )
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}
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}
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// TODO: remove this hacky workaround...
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// NB: todo_remove_this is needed to workaround a v bug,
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// where it thinks that &sapp.Event(x) is a function call,
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// instead of a cast, if v has not yet seen &sapp.Event used
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// as a parameter type.
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fn todo_remove_this(e &sapp.Event){}
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fn gg_event_fn(ce &C.sapp_event, user_data voidptr){
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e := &sapp.Event(ce)
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mut g := &Context(user_data)
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if g.config.event_fn != voidptr(0) {
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g.config.event_fn(e, g.config.user_data)
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}
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match e.typ {
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.key_down {
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if g.config.keydown_fn != voidptr(0) {
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kdfn := g.config.keydown_fn
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kdfn(e.key_code, e.modifiers, g.config.user_data)
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}
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}
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.char {
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if g.config.char_fn != voidptr(0) {
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cfn := g.config.char_fn
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cfn(e.char_code, g.config.user_data)
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}
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}
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else{}
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}
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}
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fn gg_cleanup_fn(user_data voidptr){
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mut g := &Context(user_data)
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if g.config.cleanup_fn != voidptr(0) {
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g.config.cleanup_fn(g.config.user_data)
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}
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}
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fn gg_fail_fn(msg charptr, user_data voidptr){
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mut g := &Context(user_data)
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vmsg := tos3(msg)
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if g.config.fail_fn != voidptr(0) {
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g.config.fail_fn(vmsg, g.config.user_data)
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}else{
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eprintln('gg error: $vmsg')
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}
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}
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//
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pub fn new_context(cfg Config) &Context{
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mut g := &Context{
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width: cfg.width
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height: cfg.height
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clear_pass: gfx.create_clear_pass( f32(cfg.bg_color.r) / 255.0, f32(cfg.bg_color.g) / 255.0,
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f32(cfg.bg_color.b) / 255.0, 1.0)
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config: cfg
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}
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//C.printf('new_context() %p\n', cfg.user_data)
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window := C.sapp_desc{
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user_data: g
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init_userdata_cb: gg_init_sokol_window
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frame_userdata_cb: gg_frame_fn
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event_userdata_cb: gg_event_fn
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fail_userdata_cb: gg_fail_fn
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cleanup_userdata_cb: gg_cleanup_fn
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window_title: cfg.window_title.str
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html5_canvas_name: cfg.window_title.str
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width: cfg.width
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height: cfg.height
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high_dpi: true
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fullscreen: cfg.fullscreen
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}
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if cfg.use_ortho {}
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else {}
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g.window = window
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return g
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}
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pub fn (gg &Context) run() {
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sapp.run(&gg.window)
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}
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pub fn (ctx &Context) draw_rect(x, y, w, h f32, c gx.Color) {
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sgl.c4b(c.r, c.g, c.b, 128)
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sgl.begin_quads()
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sgl.v2f(x * ctx.scale, y * ctx.scale)
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sgl.v2f((x + w) * ctx.scale, y * ctx.scale)
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sgl.v2f((x + w) * ctx.scale, (y + h) * ctx.scale)
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sgl.v2f(x * ctx.scale, (y + h) * ctx.scale)
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sgl.end()
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}
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pub fn (ctx &Context) draw_empty_rect(x, y, w, h f32, c gx.Color) {
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sgl.c4b(c.r, c.g, c.b, 128)
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sgl.begin_line_strip()
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if ctx.scale == 1 {
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sgl.v2f(x, y)
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sgl.v2f(x + w, y)
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sgl.v2f(x + w, y + h)
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sgl.v2f(x, y + h)
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sgl.v2f(x, y)
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}
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else {
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sgl.v2f(x * ctx.scale, y * ctx.scale)
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sgl.v2f((x + w) * ctx.scale, y * ctx.scale)
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sgl.v2f((x + w) * ctx.scale, (y + h) * ctx.scale)
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sgl.v2f(x * ctx.scale, (y + h) * ctx.scale)
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sgl.v2f(x*ctx.scale, y*ctx.scale)
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}
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sgl.end()
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}
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pub fn create_image(file string) u32 {
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// println('gg create image "$file"')
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if !os.exists(file) {
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println('gg create image no such file "$file"')
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return u32(0)
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}
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// img := stbi.load(file)
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// img.free()
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return 0 // texture
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}
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pub fn create_image_from_memory(buf byteptr) u32 {
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// texture := gl.gen_texture()
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// img := stbi.load_from_memory(buf)
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// img.free()
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return 0 // texture
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}
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pub fn (gg &Context) begin() {
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sgl.defaults()
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sgl.matrix_mode_projection()
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sgl.ortho(0.0, f32(sapp.width()), f32(sapp.height()), 0.0, -1.0, 1.0)
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}
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pub fn (gg &Context) end() {
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gfx.begin_default_pass(gg.clear_pass, sapp.width(), sapp.height())
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sgl.draw()
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gfx.end_pass()
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gfx.commit()
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if gg.config.wait_events {
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//println('gg: waiting')
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wait_events()
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}
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}
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pub fn (ctx &Context) draw_line(x, y, x2, y2 f32, c gx.Color) {
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sgl.c4b(c.r, c.g, c.b, 128)
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sgl.begin_line_strip()
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sgl.v2f(x * ctx.scale, y * ctx.scale)
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sgl.v2f(x2 * ctx.scale, y2 * ctx.scale)
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sgl.end()
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}
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pub fn (ctx &Context) draw_image(x, y, width, height f32, image u32) {
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}
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pub fn (ctx &Context) draw_rounded_rect(x, y, width, height, radius f32, color gx.Color) {
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}
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pub fn (ctx &Context) draw_empty_rounded_rect(x, y, width, height, radius f32, border_color gx.Color) {
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}
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fn C.WaitMessage()
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pub fn wait_events() {
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unsafe {
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$if macos {
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# NSEvent *event = [NSApp nextEventMatchingMask:NSEventMaskAny
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# untilDate:[NSDate distantFuture]
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# inMode:NSDefaultRunLoopMode
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# dequeue:YES];
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# [NSApp sendEvent:event];
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}
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$if windows {
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C.WaitMessage()
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}
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}
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}
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