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Diffstat (limited to 'v_windows/v/old/vlib/gg/gg.v')
| -rw-r--r-- | v_windows/v/old/vlib/gg/gg.v | 946 |
1 files changed, 946 insertions, 0 deletions
diff --git a/v_windows/v/old/vlib/gg/gg.v b/v_windows/v/old/vlib/gg/gg.v new file mode 100644 index 0000000..3b882da --- /dev/null +++ b/v_windows/v/old/vlib/gg/gg.v @@ -0,0 +1,946 @@ +// Copyright (c) 2019-2021 Alexander Medvednikov. All rights reserved. +// Use of this source code is governed by an MIT license that can be found in the LICENSE file. + +module gg + +import os +import gx +import sokol +import sokol.sapp +import sokol.sgl +import sokol.gfx +import math + +pub type FNCb = fn (data voidptr) + +pub type FNEvent = fn (e &Event, data voidptr) + +pub type FNFail = fn (msg string, data voidptr) + +pub type FNKeyDown = fn (c KeyCode, m Modifier, data voidptr) + +pub type FNKeyUp = fn (c KeyCode, m Modifier, data voidptr) + +pub type FNMove = fn (x f32, y f32, data voidptr) + +pub type FNClick = fn (x f32, y f32, button MouseButton, data voidptr) + +pub type FNUnClick = fn (x f32, y f32, button MouseButton, data voidptr) + +pub type FNChar = fn (c u32, data voidptr) + +pub struct Event { +pub mut: + frame_count u64 + typ sapp.EventType + key_code KeyCode + char_code u32 + key_repeat bool + modifiers u32 + mouse_button MouseButton + mouse_x f32 + mouse_y f32 + mouse_dx f32 + mouse_dy f32 + scroll_x f32 + scroll_y f32 + num_touches int + touches [8]C.sapp_touchpoint + window_width int + window_height int + framebuffer_width int + framebuffer_height int +} + +pub struct Config { +pub: + width int + height int + use_ortho bool // unused, still here just for backwards compatibility + retina bool + resizable bool + user_data voidptr + font_size int + create_window bool + // window_user_ptr voidptr + window_title string + borderless_window bool + always_on_top bool + bg_color gx.Color + init_fn FNCb = voidptr(0) + frame_fn FNCb = voidptr(0) + native_frame_fn FNCb = voidptr(0) + cleanup_fn FNCb = voidptr(0) + fail_fn FNFail = voidptr(0) + // + event_fn FNEvent = voidptr(0) + quit_fn FNEvent = voidptr(0) + // + keydown_fn FNKeyDown = voidptr(0) + keyup_fn FNKeyUp = voidptr(0) + char_fn FNChar = voidptr(0) + // + move_fn FNMove = voidptr(0) + click_fn FNClick = voidptr(0) + unclick_fn FNUnClick = voidptr(0) + leave_fn FNEvent = voidptr(0) + enter_fn FNEvent = voidptr(0) + resized_fn FNEvent = voidptr(0) + scroll_fn FNEvent = voidptr(0) + // wait_events bool // set this to true for UIs, to save power + fullscreen bool + scale f32 = 1.0 + sample_count int + // ved needs this + // init_text bool + font_path string + custom_bold_font_path string + ui_mode bool // refreshes only on events to save CPU usage + // font bytes for embedding + font_bytes_normal []byte + font_bytes_bold []byte + font_bytes_mono []byte + font_bytes_italic []byte + native_rendering bool // Cocoa on macOS/iOS, GDI+ on Windows +} + +pub struct PenConfig { + color gx.Color + line_type PenLineType = .solid + thickness int = 1 +} + +[heap] +pub struct Context { +mut: + render_text bool = true + // a cache with all images created by the user. used for sokol image init and to save space + // (so that the user can store image ids, not entire Image objects) + image_cache []Image + needs_refresh bool = true + ticks int // for ui mode only +pub: + native_rendering bool +pub mut: + scale f32 = 1.0 + // will get set to 2.0 for retina, will remain 1.0 for normal + width int + height int + clear_pass C.sg_pass_action + window C.sapp_desc + timage_pip C.sgl_pipeline + config Config + ft &FT + font_inited bool + ui_mode bool // do not redraw everything 60 times/second, but only when the user requests + frame u64 // the current frame counted from the start of the application; always increasing + // + mbtn_mask byte + mouse_buttons MouseButtons // typed version of mbtn_mask; easier to use for user programs + mouse_pos_x int + mouse_pos_y int + mouse_dx int + mouse_dy int + scroll_x int + scroll_y int + // + key_modifiers Modifier // the current key modifiers + key_repeat bool // whether the pressed key was an autorepeated one + pressed_keys [key_code_max]bool // an array representing all currently pressed keys + pressed_keys_edge [key_code_max]bool // true when the previous state of pressed_keys, + // *before* the current event was different +} + +pub struct Size { +pub: + width int + height int +} + +fn gg_init_sokol_window(user_data voidptr) { + mut g := unsafe { &Context(user_data) } + desc := sapp.create_desc() + /* + desc := C.sg_desc{ + mtl_device: sapp.metal_get_device() + mtl_renderpass_descriptor_cb: sapp.metal_get_renderpass_descriptor + mtl_drawable_cb: sapp.metal_get_drawable + d3d11_device: sapp.d3d11_get_device() + d3d11_device_context: sapp.d3d11_get_device_context() + d3d11_render_target_view_cb: sapp.d3d11_get_render_target_view + d3d11_depth_stencil_view_cb: sapp.d3d11_get_depth_stencil_view + } + */ + gfx.setup(&desc) + sgl_desc := C.sgl_desc_t{} + sgl.setup(&sgl_desc) + g.scale = dpi_scale() + // is_high_dpi := sapp.high_dpi() + // fb_w := sapp.width() + // fb_h := sapp.height() + // println('g.scale=$g.scale is_high_dpi=$is_high_dpi fb_w=$fb_w fb_h=$fb_h') + // if g.config.init_text { + // `os.is_file()` won't work on Android if the font file is embedded into the APK + exists := $if !android { os.is_file(g.config.font_path) } $else { true } + if g.config.font_path != '' && !exists { + g.render_text = false + } else if g.config.font_path != '' && exists { + // t := time.ticks() + g.ft = new_ft( + font_path: g.config.font_path + custom_bold_font_path: g.config.custom_bold_font_path + scale: dpi_scale() + ) or { panic(err) } + // println('FT took ${time.ticks()-t} ms') + g.font_inited = true + } else { + if g.config.font_bytes_normal.len > 0 { + g.ft = new_ft( + bytes_normal: g.config.font_bytes_normal + bytes_bold: g.config.font_bytes_bold + bytes_mono: g.config.font_bytes_mono + bytes_italic: g.config.font_bytes_italic + scale: sapp.dpi_scale() + ) or { panic(err) } + g.font_inited = true + } else { + sfont := system_font_path() + if g.config.font_path != '' { + eprintln('font file "$g.config.font_path" does not exist, the system font ($sfont) was used instead.') + } + + g.ft = new_ft( + font_path: sfont + custom_bold_font_path: g.config.custom_bold_font_path + scale: sapp.dpi_scale() + ) or { panic(err) } + g.font_inited = true + } + } + // + mut pipdesc := C.sg_pipeline_desc{ + label: c'alpha_image' + } + unsafe { C.memset(&pipdesc, 0, sizeof(pipdesc)) } + + color_state := C.sg_color_state{ + blend: C.sg_blend_state{ + enabled: true + src_factor_rgb: gfx.BlendFactor(C.SG_BLENDFACTOR_SRC_ALPHA) + dst_factor_rgb: gfx.BlendFactor(C.SG_BLENDFACTOR_ONE_MINUS_SRC_ALPHA) + } + } + pipdesc.colors[0] = color_state + + g.timage_pip = sgl.make_pipeline(&pipdesc) + // + if g.config.init_fn != voidptr(0) { + g.config.init_fn(g.config.user_data) + } + // Create images now that we can do that after sg is inited + if g.native_rendering { + return + } + + for i in 0 .. g.image_cache.len { + if g.image_cache[i].simg.id == 0 { + g.image_cache[i].init_sokol_image() + } + } +} + +fn gg_frame_fn(user_data voidptr) { + mut ctx := unsafe { &Context(user_data) } + ctx.frame++ + if ctx.config.frame_fn == voidptr(0) { + return + } + if ctx.native_rendering { + // return + } + + if ctx.ui_mode && !ctx.needs_refresh { + // Draw 3 more frames after the "stop refresh" command + ctx.ticks++ + if ctx.ticks > 3 { + return + } + } + ctx.config.frame_fn(ctx.config.user_data) + ctx.needs_refresh = false +} + +pub fn (mut ctx Context) refresh_ui() { + ctx.needs_refresh = true + ctx.ticks = 0 +} + +fn gg_event_fn(ce &C.sapp_event, user_data voidptr) { + // e := unsafe { &sapp.Event(ce) } + mut e := unsafe { &Event(ce) } + mut g := unsafe { &Context(user_data) } + if g.ui_mode { + g.refresh_ui() + } + if e.typ == .mouse_down { + bitplace := int(e.mouse_button) + g.mbtn_mask |= byte(1 << bitplace) + g.mouse_buttons = MouseButtons(g.mbtn_mask) + } + if e.typ == .mouse_up { + bitplace := int(e.mouse_button) + g.mbtn_mask &= ~(byte(1 << bitplace)) + g.mouse_buttons = MouseButtons(g.mbtn_mask) + } + if e.typ == .mouse_move && e.mouse_button == .invalid { + if g.mbtn_mask & 0x01 > 0 { + e.mouse_button = .left + } + if g.mbtn_mask & 0x02 > 0 { + e.mouse_button = .right + } + if g.mbtn_mask & 0x04 > 0 { + e.mouse_button = .middle + } + } + g.mouse_pos_x = int(e.mouse_x / g.scale) + g.mouse_pos_y = int(e.mouse_y / g.scale) + g.mouse_dx = int(e.mouse_dx / g.scale) + g.mouse_dy = int(e.mouse_dy / g.scale) + g.scroll_x = int(e.scroll_x / g.scale) + g.scroll_y = int(e.scroll_y / g.scale) + g.key_modifiers = Modifier(e.modifiers) + g.key_repeat = e.key_repeat + if e.typ in [.key_down, .key_up] { + key_idx := int(e.key_code) % key_code_max + prev := g.pressed_keys[key_idx] + next := e.typ == .key_down + g.pressed_keys[key_idx] = next + g.pressed_keys_edge[key_idx] = prev != next + } + if g.config.event_fn != voidptr(0) { + g.config.event_fn(e, g.config.user_data) + } + match e.typ { + .mouse_move { + if g.config.move_fn != voidptr(0) { + g.config.move_fn(e.mouse_x / g.scale, e.mouse_y / g.scale, g.config.user_data) + } + } + .mouse_down { + if g.config.click_fn != voidptr(0) { + g.config.click_fn(e.mouse_x / g.scale, e.mouse_y / g.scale, e.mouse_button, + g.config.user_data) + } + } + .mouse_up { + if g.config.unclick_fn != voidptr(0) { + g.config.unclick_fn(e.mouse_x / g.scale, e.mouse_y / g.scale, e.mouse_button, + g.config.user_data) + } + } + .mouse_leave { + if g.config.leave_fn != voidptr(0) { + g.config.leave_fn(e, g.config.user_data) + } + } + .mouse_enter { + if g.config.enter_fn != voidptr(0) { + g.config.enter_fn(e, g.config.user_data) + } + } + .mouse_scroll { + if g.config.scroll_fn != voidptr(0) { + g.config.scroll_fn(e, g.config.user_data) + } + } + .key_down { + if g.config.keydown_fn != voidptr(0) { + g.config.keydown_fn(e.key_code, Modifier(e.modifiers), g.config.user_data) + } + } + .key_up { + if g.config.keyup_fn != voidptr(0) { + g.config.keyup_fn(e.key_code, Modifier(e.modifiers), g.config.user_data) + } + } + .char { + if g.config.char_fn != voidptr(0) { + g.config.char_fn(e.char_code, g.config.user_data) + } + } + .resized { + if g.config.resized_fn != voidptr(0) { + g.config.resized_fn(e, g.config.user_data) + } + } + .quit_requested { + if g.config.quit_fn != voidptr(0) { + g.config.quit_fn(e, g.config.user_data) + } + } + else { + // dump(e) + } + } +} + +fn gg_cleanup_fn(user_data voidptr) { + mut g := unsafe { &Context(user_data) } + if g.config.cleanup_fn != voidptr(0) { + g.config.cleanup_fn(g.config.user_data) + } +} + +fn gg_fail_fn(msg &char, user_data voidptr) { + mut g := unsafe { &Context(user_data) } + vmsg := unsafe { tos3(msg) } + if g.config.fail_fn != voidptr(0) { + g.config.fail_fn(vmsg, g.config.user_data) + } else { + eprintln('gg error: $vmsg') + } +} + +// +pub fn new_context(cfg Config) &Context { + mut g := &Context{ + width: cfg.width + height: cfg.height + config: cfg + ft: 0 + ui_mode: cfg.ui_mode + native_rendering: cfg.native_rendering + } + g.set_bg_color(cfg.bg_color) + // C.printf('new_context() %p\n', cfg.user_data) + window := C.sapp_desc{ + user_data: g + init_userdata_cb: gg_init_sokol_window + frame_userdata_cb: gg_frame_fn + event_userdata_cb: gg_event_fn + fail_userdata_cb: gg_fail_fn + cleanup_userdata_cb: gg_cleanup_fn + window_title: &char(cfg.window_title.str) + html5_canvas_name: &char(cfg.window_title.str) + width: cfg.width + height: cfg.height + sample_count: cfg.sample_count + high_dpi: true + fullscreen: cfg.fullscreen + __v_native_render: cfg.native_rendering + } + g.window = window + return g +} + +pub fn (gg &Context) run() { + sapp.run(&gg.window) +} + +// quit closes the context window and exits the event loop for it +pub fn (ctx &Context) quit() { + sapp.request_quit() // does not require ctx right now, but sokol multi-window might in the future +} + +pub fn (mut ctx Context) set_bg_color(c gx.Color) { + ctx.clear_pass = gfx.create_clear_pass(f32(c.r) / 255.0, f32(c.g) / 255.0, f32(c.b) / 255.0, + f32(c.a) / 255.0) +} + +// TODO: Fix alpha +pub fn (ctx &Context) draw_rect(x f32, y f32, w f32, h f32, c gx.Color) { + $if macos { + if ctx.native_rendering { + C.darwin_draw_rect(x, ctx.height - (y + h), w, h, c) + return + } + } + if c.a != 255 { + sgl.load_pipeline(ctx.timage_pip) + } + sgl.c4b(c.r, c.g, c.b, c.a) + sgl.begin_quads() + sgl.v2f(x * ctx.scale, y * ctx.scale) + sgl.v2f((x + w) * ctx.scale, y * ctx.scale) + sgl.v2f((x + w) * ctx.scale, (y + h) * ctx.scale) + sgl.v2f(x * ctx.scale, (y + h) * ctx.scale) + sgl.end() +} + +[inline] +pub fn (ctx &Context) draw_square(x f32, y f32, s f32, c gx.Color) { + ctx.draw_rect(x, y, s, s, c) +} + +[inline] +pub fn (ctx &Context) set_pixel(x f32, y f32, c gx.Color) { + ctx.draw_square(x, y, 1, c) +} + +pub fn (ctx &Context) draw_triangle(x f32, y f32, x2 f32, y2 f32, x3 f32, y3 f32, c gx.Color) { + if c.a != 255 { + sgl.load_pipeline(ctx.timage_pip) + } + sgl.c4b(c.r, c.g, c.b, c.a) + sgl.begin_quads() + sgl.v2f(x * ctx.scale, y * ctx.scale) + sgl.v2f(x2 * ctx.scale, y2 * ctx.scale) + sgl.v2f(x3 * ctx.scale, y3 * ctx.scale) + sgl.end() +} + +pub fn (ctx &Context) draw_empty_rect(x f32, y f32, w f32, h f32, c gx.Color) { + if c.a != 255 { + sgl.load_pipeline(ctx.timage_pip) + } + sgl.c4b(c.r, c.g, c.b, c.a) + sgl.begin_line_strip() + sgl.v2f(x * ctx.scale, y * ctx.scale) + sgl.v2f((x + w) * ctx.scale, y * ctx.scale) + sgl.v2f((x + w) * ctx.scale, (y + h) * ctx.scale) + sgl.v2f(x * ctx.scale, (y + h) * ctx.scale) + sgl.v2f(x * ctx.scale, y * ctx.scale) + sgl.end() +} + +[inline] +pub fn (ctx &Context) draw_empty_square(x f32, y f32, s f32, c gx.Color) { + ctx.draw_empty_rect(x, y, s, s, c) +} + +pub fn (ctx &Context) draw_circle_line(x f32, y f32, r int, segments int, c gx.Color) { + $if macos { + if ctx.native_rendering { + C.darwin_draw_circle(x - r + 1, ctx.height - (y + r + 3), r, c) + return + } + } + if c.a != 255 { + sgl.load_pipeline(ctx.timage_pip) + } + sgl.c4b(c.r, c.g, c.b, c.a) + nx := x * ctx.scale + ny := y * ctx.scale + nr := r * ctx.scale + mut theta := f32(0) + mut xx := f32(0) + mut yy := f32(0) + sgl.begin_line_strip() + for i := 0; i < segments + 1; i++ { + theta = 2.0 * f32(math.pi) * f32(i) / f32(segments) + xx = nr * math.cosf(theta) + yy = nr * math.sinf(theta) + sgl.v2f(xx + nx, yy + ny) + } + sgl.end() +} + +pub fn (ctx &Context) draw_circle(x f32, y f32, r f32, c gx.Color) { + ctx.draw_circle_with_segments(x, y, r, 10, c) +} + +pub fn (ctx &Context) draw_circle_with_segments(x f32, y f32, r f32, segments int, c gx.Color) { + if c.a != 255 { + sgl.load_pipeline(ctx.timage_pip) + } + sgl.c4b(c.r, c.g, c.b, c.a) + nx := x * ctx.scale + ny := y * ctx.scale + nr := r * ctx.scale + mut theta := f32(0) + mut xx := f32(0) + mut yy := f32(0) + sgl.begin_triangle_strip() + for i := 0; i < segments + 1; i++ { + theta = 2.0 * f32(math.pi) * f32(i) / f32(segments) + xx = nr * math.cosf(theta) + yy = nr * math.sinf(theta) + sgl.v2f(xx + nx, yy + ny) + sgl.v2f(nx, ny) + } + sgl.end() +} + +pub fn (ctx &Context) draw_arc_line(x f32, y f32, r int, start_angle f32, arc_angle f32, segments int, c gx.Color) { + if c.a != 255 { + sgl.load_pipeline(ctx.timage_pip) + } + sgl.c4b(c.r, c.g, c.b, c.a) + theta := f32(arc_angle / f32(segments)) + tan_factor := math.tanf(theta) + rad_factor := math.cosf(theta) + nx := x * ctx.scale + ny := y * ctx.scale + mut xx := f32(r * math.cosf(start_angle)) + mut yy := f32(r * math.sinf(start_angle)) + sgl.begin_line_strip() + for i := 0; i < segments + 1; i++ { + sgl.v2f(xx + nx, yy + ny) + tx := -yy + ty := xx + xx += tx * tan_factor + yy += ty * tan_factor + xx *= rad_factor + yy *= rad_factor + } + sgl.end() +} + +pub fn (ctx &Context) draw_arc(x f32, y f32, r int, start_angle f32, arc_angle f32, segments int, c gx.Color) { + if c.a != 255 { + sgl.load_pipeline(ctx.timage_pip) + } + sgl.c4b(c.r, c.g, c.b, c.a) + nx := x * ctx.scale + ny := y * ctx.scale + theta := f32(arc_angle / f32(segments)) + tan_factor := math.tanf(theta) + rad_factor := math.cosf(theta) + mut xx := f32(r * math.cosf(start_angle)) + mut yy := f32(r * math.sinf(start_angle)) + sgl.begin_triangle_strip() + for i := 0; i < segments + 1; i++ { + sgl.v2f(xx + nx, yy + ny) + sgl.v2f(nx, ny) + tx := -yy + ty := xx + xx += tx * tan_factor + yy += ty * tan_factor + xx *= rad_factor + yy *= rad_factor + } + sgl.end() +} + +pub fn (gg &Context) begin() { + if gg.render_text && gg.font_inited { + gg.ft.flush() + } + sgl.defaults() + sgl.matrix_mode_projection() + sgl.ortho(0.0, f32(sapp.width()), f32(sapp.height()), 0.0, -1.0, 1.0) +} + +pub fn (gg &Context) end() { + gfx.begin_default_pass(gg.clear_pass, sapp.width(), sapp.height()) + sgl.draw() + gfx.end_pass() + gfx.commit() + /* + if gg.config.wait_events { + // println('gg: waiting') + wait_events() + } + */ +} + +// resize the context's Window +pub fn (mut ctx Context) resize(width int, height int) { + ctx.width = width + ctx.height = height +} + +// draw_line draws a line between the points provided +pub fn (ctx &Context) draw_line(x f32, y f32, x2 f32, y2 f32, c gx.Color) { + $if macos { + if ctx.native_rendering { + // Make the line more clear on hi dpi screens: draw a rectangle + mut width := math.abs(x2 - x) + mut height := math.abs(y2 - y) + if width == 0 { + width = 1 + } else if height == 0 { + height = 1 + } + ctx.draw_rect(x, y, f32(width), f32(height), c) + return + } + } + if c.a != 255 { + sgl.load_pipeline(ctx.timage_pip) + } + sgl.c4b(c.r, c.g, c.b, c.a) + sgl.begin_line_strip() + sgl.v2f(x * ctx.scale, y * ctx.scale) + sgl.v2f(x2 * ctx.scale, y2 * ctx.scale) + sgl.end() +} + +// draw_line_with_config draws a line between the points provided with the PenConfig +pub fn (ctx &Context) draw_line_with_config(x f32, y f32, x2 f32, y2 f32, config PenConfig) { + if config.color.a != 255 { + sgl.load_pipeline(ctx.timage_pip) + } + + if config.thickness <= 0 { + return + } + + nx := x * ctx.scale + ny := y * ctx.scale + nx2 := x2 * ctx.scale + ny2 := y2 * ctx.scale + + dx := nx2 - nx + dy := ny2 - ny + length := math.sqrtf(math.powf(x2 - x, 2) + math.powf(y2 - y, 2)) + theta := f32(math.atan2(dy, dx)) + + sgl.push_matrix() + + sgl.translate(nx, ny, 0) + sgl.rotate(theta, 0, 0, 1) + sgl.translate(-nx, -ny, 0) + + if config.line_type == .solid { + ctx.draw_rect(x, y, length, config.thickness, config.color) + } else { + size := if config.line_type == .dotted { config.thickness } else { config.thickness * 3 } + space := if size == 1 { 2 } else { size } + + mut available := length + mut start_x := x + + for i := 0; available > 0; i++ { + if i % 2 == 0 { + ctx.draw_rect(start_x, y, size, config.thickness, config.color) + available -= size + start_x += size + continue + } + + available -= space + start_x += space + } + } + + sgl.pop_matrix() +} + +pub fn (ctx &Context) draw_rounded_rect(x f32, y f32, w f32, h f32, radius f32, color gx.Color) { + sgl.c4b(color.r, color.g, color.b, color.a) + sgl.begin_triangle_strip() + mut theta := f32(0) + mut xx := f32(0) + mut yy := f32(0) + r := radius * ctx.scale + nx := x * ctx.scale + ny := y * ctx.scale + width := w * ctx.scale + height := h * ctx.scale + segments := 2 * math.pi * r + segdiv := segments / 4 + rb := 0 + lb := int(rb + segdiv) + lt := int(lb + segdiv) + rt := int(lt + segdiv) + // left top + lx := nx + r + ly := ny + r + for i in lt .. rt { + theta = 2 * f32(math.pi) * f32(i) / segments + xx = r * math.cosf(theta) + yy = r * math.sinf(theta) + sgl.v2f(xx + lx, yy + ly) + sgl.v2f(lx, ly) + } + // right top + mut rx := nx + width - r + mut ry := ny + r + for i in rt .. int(segments) { + theta = 2 * f32(math.pi) * f32(i) / segments + xx = r * math.cosf(theta) + yy = r * math.sinf(theta) + sgl.v2f(xx + rx, yy + ry) + sgl.v2f(rx, ry) + } + // right bottom + mut rbx := rx + mut rby := ny + height - r + for i in rb .. lb { + theta = 2 * f32(math.pi) * f32(i) / segments + xx = r * math.cosf(theta) + yy = r * math.sinf(theta) + sgl.v2f(xx + rbx, yy + rby) + sgl.v2f(rbx, rby) + } + // left bottom + mut lbx := lx + mut lby := ny + height - r + for i in lb .. lt { + theta = 2 * f32(math.pi) * f32(i) / segments + xx = r * math.cosf(theta) + yy = r * math.sinf(theta) + sgl.v2f(xx + lbx, yy + lby) + sgl.v2f(lbx, lby) + } + sgl.v2f(lx + xx, ly) + sgl.v2f(lx, ly) + sgl.end() + sgl.begin_quads() + sgl.v2f(lx, ly) + sgl.v2f(rx, ry) + sgl.v2f(rbx, rby) + sgl.v2f(lbx, lby) + sgl.end() +} + +pub fn (ctx &Context) draw_empty_rounded_rect(x f32, y f32, w f32, h f32, radius f32, border_color gx.Color) { + mut theta := f32(0) + mut xx := f32(0) + mut yy := f32(0) + r := radius * ctx.scale + nx := x * ctx.scale + ny := y * ctx.scale + width := w * ctx.scale + height := h * ctx.scale + segments := 2 * math.pi * r + segdiv := segments / 4 + rb := 0 + lb := int(rb + segdiv) + lt := int(lb + segdiv) + rt := int(lt + segdiv) + sgl.c4b(border_color.r, border_color.g, border_color.b, border_color.a) + sgl.begin_line_strip() + // left top + lx := nx + r + ly := ny + r + for i in lt .. rt { + theta = 2 * f32(math.pi) * f32(i) / segments + xx = r * math.cosf(theta) + yy = r * math.sinf(theta) + sgl.v2f(xx + lx, yy + ly) + } + // right top + mut rx := nx + width - r + mut ry := ny + r + for i in rt .. int(segments) { + theta = 2 * f32(math.pi) * f32(i) / segments + xx = r * math.cosf(theta) + yy = r * math.sinf(theta) + sgl.v2f(xx + rx, yy + ry) + } + // right bottom + mut rbx := rx + mut rby := ny + height - r + for i in rb .. lb { + theta = 2 * f32(math.pi) * f32(i) / segments + xx = r * math.cosf(theta) + yy = r * math.sinf(theta) + sgl.v2f(xx + rbx, yy + rby) + } + // left bottom + mut lbx := lx + mut lby := ny + height - r + for i in lb .. lt { + theta = 2 * f32(math.pi) * f32(i) / segments + xx = r * math.cosf(theta) + yy = r * math.sinf(theta) + sgl.v2f(xx + lbx, yy + lby) + } + sgl.v2f(lx + xx, ly) + sgl.end() +} + +// draw_convex_poly draws a convex polygon, given an array of points, and a color. +// Note that the points must be given in clockwise order. +pub fn (ctx &Context) draw_convex_poly(points []f32, c gx.Color) { + assert points.len % 2 == 0 + len := points.len / 2 + assert len >= 3 + + if c.a != 255 { + sgl.load_pipeline(ctx.timage_pip) + } + sgl.c4b(c.r, c.g, c.b, c.a) + + sgl.begin_triangle_strip() + x0 := points[0] + y0 := points[1] + for i in 1 .. (len / 2 + 1) { + sgl.v2f(x0, y0) + sgl.v2f(points[i * 4 - 2], points[i * 4 - 1]) + sgl.v2f(points[i * 4], points[i * 4 + 1]) + } + + if len % 2 == 0 { + sgl.v2f(points[2 * len - 2], points[2 * len - 1]) + } + sgl.end() +} + +// draw_empty_poly - draws the borders of a polygon, given an array of points, and a color. +// Note that the points must be given in clockwise order. +pub fn (ctx &Context) draw_empty_poly(points []f32, c gx.Color) { + assert points.len % 2 == 0 + len := points.len / 2 + assert len >= 3 + + if c.a != 255 { + sgl.load_pipeline(ctx.timage_pip) + } + sgl.c4b(c.r, c.g, c.b, c.a) + + sgl.begin_line_strip() + for i in 0 .. len { + sgl.v2f(points[2 * i], points[2 * i + 1]) + } + sgl.v2f(points[0], points[1]) + sgl.end() +} + +pub fn screen_size() Size { + $if macos { + return C.gg_get_screen_size() + } + // TODO windows, linux, etc + return Size{} +} + +// window_size returns the `Size` of the active window +pub fn window_size() Size { + s := dpi_scale() + return Size{int(sapp.width() / s), int(sapp.height() / s)} +} + +// window_size_real_pixels returns the `Size` of the active window without scale +pub fn window_size_real_pixels() Size { + return Size{sapp.width(), sapp.height()} +} + +pub fn dpi_scale() f32 { + mut s := sapp.dpi_scale() + $if android { + s *= android_dpi_scale() + } + // NB: on older X11, `Xft.dpi` from ~/.Xresources, that sokol uses, + // may not be set which leads to sapp.dpi_scale reporting incorrectly 0.0 + if s < 0.1 { + s = 1. + } + return s +} + +pub fn high_dpi() bool { + return C.sapp_high_dpi() +} + +fn C.WaitMessage() + +/* +pub fn wait_events() { + unsafe { + $if macos { + #NSEvent *event = [NSApp nextEventMatchingMask:NSEventMaskAny + #untilDate:[NSDate distantFuture] + #inMode:NSDefaultRunLoopMode + #dequeue:YES]; + #[NSApp sendEvent:event]; + } + $if windows { + C.WaitMessage() + } + } +} +*/ |