337 lines
11 KiB
Lua
337 lines
11 KiB
Lua
|
|
local stb = require("stb")
|
|
local nk = sg
|
|
|
|
local utils = require("lua.utils")
|
|
-- require("engine.nuklear")
|
|
|
|
local ffi = require("ffi")
|
|
|
|
local tinsert = table.insert
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
table.unpack = unpack
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
local function checkstring(val)
|
|
local t = type(val)
|
|
if t == "string" then
|
|
return val
|
|
elseif t == "number" then
|
|
return tostring(val)
|
|
elseif t == "cdata" then
|
|
return ffi.string(val)
|
|
else
|
|
error("bad argument: string or number expected, got " .. t, 2)
|
|
end
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
renderer = {
|
|
ctx = nil,
|
|
all_fonts = {},
|
|
cursor = { name = "arrow", rect = { position = {x=0,y=0}, size ={x=1,y=1} } },
|
|
}
|
|
|
|
renderer.font = {
|
|
ctx = nil,
|
|
}
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
local atlas = ffi.new("struct nk_font_atlas[1]")
|
|
local fonts = {}
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
local master_img_width = ffi.new("int[1]", 2048)
|
|
local master_img_height = ffi.new("int[1]", 4096)
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
local function adjust_glyph(font_handle, unicode, width)
|
|
|
|
local font = ffi.cast("struct nk_font *", font_handle.ptr)
|
|
local g = font.glyphs[unicode]
|
|
g.xadvance = width
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
local function get_glyph_xadvance(font_handle, unicode)
|
|
|
|
local font = ffi.cast("struct nk_font *", font_handle.ptr)
|
|
local g = font.glyphs[unicode]
|
|
return g.xadvance
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
local function find_glyph(font, codepoint)
|
|
local glyph_ptr = font.glyphs
|
|
while glyph_ptr ~= nil and glyph_ptr[0].codepoint ~= 0 do
|
|
if tonumber(glyph_ptr[0].codepoint) == codepoint then
|
|
return glyph_ptr
|
|
end
|
|
glyph_ptr = glyph_ptr + 1
|
|
end
|
|
return nil
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
local function fix_tab_glyph(glyph, space)
|
|
|
|
glyph[0].xadvance = space * 4
|
|
glyph[0].w, glyph[0].h = 0, 0
|
|
glyph[0].x0, glyph[0].y0, glyph[0].x1, glyph[0].y1 = 0, 0, 0, 0
|
|
glyph[0].u0, glyph[0].v0, glyph[0].u1, glyph[0].v1 = 0, 0, 0, 0
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
local rune_ranges = ffi.new("nk_rune[9]", {
|
|
0x0009, 0x000A, -- tab
|
|
0x0020, 0x00FF, -- basic Latin + Latin-1
|
|
0x2500, 0x2BFF, -- box-drawing, arrows
|
|
0xE000, 0xF8FF, -- private use / Nerd Font symbols
|
|
0
|
|
})
|
|
|
|
local fa_rune_ranges = ffi.new("nk_rune[9]", {
|
|
0xE000, 0xF8FF, -- private use / Nerd Font symbols
|
|
0
|
|
})
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
local function font_loader( atlas, font_file, font_size)
|
|
|
|
local config = nk.nk_font_config(font_size)
|
|
-- Special case where the glyphs need to be default
|
|
if(string.match(font_file, "icons.ttf$")) then
|
|
config.range = nk.nk_font_default_glyph_ranges()
|
|
elseif(string.match(font_file, "fontawesome")) then
|
|
config.range = fa_rune_ranges
|
|
else
|
|
config.range = rune_ranges
|
|
end
|
|
-- config.merge_mode = nk.nk_false
|
|
local newfont = nk.nk_font_atlas_add_from_file(atlas, font_file, font_size, config)
|
|
|
|
-- local image = nk.nk_font_atlas_bake(atlas, master_img_width, master_img_height, nk.NK_FONT_ATLAS_RGBA32)
|
|
return nil, newfont
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
local function font_atlas_img( image, debug )
|
|
local sg_img_desc = ffi.new("sg_image_desc[1]")
|
|
sg_img_desc[0].width = master_img_width[0]
|
|
sg_img_desc[0].height = master_img_height[0]
|
|
sg_img_desc[0].pixel_format = sg.SG_PIXELFORMAT_RGBA8
|
|
sg_img_desc[0].sample_count = 1
|
|
|
|
sg_img_desc[0].data.subimage[0][0].ptr = image
|
|
sg_img_desc[0].data.subimage[0][0].size = master_img_width[0] * master_img_height[0] * 4
|
|
local new_img = sg.sg_make_image(sg_img_desc)
|
|
|
|
-- // create a sokol-nuklear image object which associates an sg_image with an sg_sampler
|
|
local img_desc = ffi.new("snk_image_desc_t[1]")
|
|
img_desc[0].image = new_img
|
|
|
|
local snk_img = nk.snk_make_image(img_desc)
|
|
local nk_hnd = nk.snk_nkhandle(snk_img)
|
|
|
|
if(debug) then
|
|
-- Dump the atlas to check it.
|
|
stb.stbi_write_png( "data/fonts/atlas_font.png", master_img_width[0], master_img_height[0], 4, image, master_img_width[0] * 4)
|
|
end
|
|
|
|
return nk_hnd
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
-- Load font into a font pool - need to regen font atlas for this
|
|
local function load_font(font_path, font_size)
|
|
|
|
if(font_size == 0.0) then font_size = 16.0 end
|
|
local ctx = renderer.ctx
|
|
if(ctx == nil) then return nil end
|
|
-- Reset image
|
|
local image = nil
|
|
local new_font = nil
|
|
|
|
nk.nk_font_atlas_init_default(atlas)
|
|
nk.nk_font_atlas_begin(atlas)
|
|
|
|
-- image = nk.nk_font_atlas_bake(atlas, master_img_width, master_img_height, nk.NK_FONT_ATLAS_RGBA32)
|
|
|
|
-- Reload previous fonts.
|
|
for i, font in ipairs(fonts) do
|
|
image, fonts.font = font_loader(atlas, font.path, font.size)
|
|
|
|
local glyph = find_glyph(font.font, 9)
|
|
local space = get_glyph_xadvance(font.font.handle.userdata, 32)
|
|
if(glyph) then fix_tab_glyph(glyph, space) end
|
|
|
|
-- atlas[0].config.range = rune_ranges -- nk.nk_font_default_glyph_ranges()
|
|
end
|
|
|
|
-- local cfg = ffi.new("struct nk_font_config[1]", {nk.nk_font_config(font_size)})
|
|
-- cfg[0].merge_mode = nk.nk_true
|
|
-- cfg.coord_type = nk.NK_COORD_PIXEL
|
|
|
|
image, new_font = font_loader(atlas, font_path, font_size)
|
|
image = nk.nk_font_atlas_bake(atlas, master_img_width, master_img_height, nk.NK_FONT_ATLAS_RGBA32)
|
|
local glyph = find_glyph(new_font, 9)
|
|
local space = get_glyph_xadvance(new_font.handle.userdata, 32)
|
|
if(glyph) then fix_tab_glyph(glyph, space) end
|
|
|
|
|
|
local nk_img = font_atlas_img(image, true)
|
|
nk.nk_font_atlas_end(atlas, nk_img, nil)
|
|
nk.nk_font_atlas_cleanup(atlas)
|
|
|
|
nk.nk_style_load_all_cursors(ctx, atlas[0].cursors)
|
|
nk.nk_style_set_font(ctx, new_font.handle)
|
|
|
|
local tab_size = get_glyph_xadvance(new_font.handle.userdata, 9)
|
|
|
|
-- print(master_img_width[0], master_img_height[0], tab_size)
|
|
local new_font_tbl = { tab_width = tab_size, font = new_font, path = font_path, size = font_size, cfg = nil }
|
|
tinsert(fonts, new_font_tbl)
|
|
|
|
return new_font_tbl
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
renderer.get_font = function( font_id )
|
|
return renderer.all_fonts[font_id]
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
renderer.font.load = function(path, size)
|
|
local new_font = load_font(path, size)
|
|
if(new_font == nil) then return nil end
|
|
new_font.set_tab_width = function(self, width)
|
|
if(width == self.tab_width) then return end
|
|
adjust_glyph( self.font.handle.userdata, 9, width )
|
|
self.tab_width = width
|
|
end
|
|
new_font.get_tab_width = function(self, width)
|
|
return self.tab_width
|
|
end
|
|
new_font.get_width = function(self, text)
|
|
if(text==nil) then print(debug.traceback()) end
|
|
local text = checkstring(text)
|
|
return self.font.handle.width(self.font.handle.userdata, self.font.handle.height, text, #text)
|
|
end
|
|
new_font.get_height = function(self) return self.font.handle.height end
|
|
new_font.get_size = function(self) return self.size end
|
|
new_font.set_size = function(self, size) self.size = size end
|
|
new_font.get_path = function(self) return self.path end
|
|
new_font.get_handle = function(self) return self.font.handle end
|
|
|
|
local font_id = #renderer.all_fonts+1
|
|
new_font.get_id = function(self) return font_id end
|
|
|
|
tinsert(renderer.all_fonts, new_font)
|
|
return setmetatable(new_font, { __index = new_font })
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
renderer.show_debug = function(enable)
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
renderer.get_size = function()
|
|
return nuklear_renderer.get_size()
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
-- Not really needed
|
|
renderer.begin_frame = function()
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
-- Hrm.. needed?
|
|
renderer.end_frame = function()
|
|
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
renderer.set_clip_rect = function(x, y, w, h)
|
|
nuklear_renderer.set_clip_rect(x, y, w, h)
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
renderer.draw_rect = function(x, y, w, h, color)
|
|
nuklear_renderer.draw_rect(x, y, w, h, color)
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
renderer.draw_text = function(font, text, x, y, color)
|
|
return nuklear_renderer.draw_text(font, text, x, y, color)
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
renderer.draw_cursor = function()
|
|
local icolor = nk.nk_rgba(0xff, 0xff, 0xff, 0xff)
|
|
local r = nk.nk_rect(renderer.ctx.input.mouse.pos.x, renderer.ctx.input.mouse.pos.y, 12, 19)
|
|
nk.nk_draw_image(renderer.canvas, r, renderer.ctx.style.cursor_active.img, icolor)
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
renderer.load_image = function(filename, no_ui)
|
|
local img, img_info = nuklear_renderer.load_image(filename, no_ui)
|
|
return img, img_info
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
renderer.load_image_buffer = function(name, buf, bufsize, no_ui)
|
|
local img, img_info = nuklear_renderer.load_image_buffer(name, buf, bufsize, no_ui)
|
|
return img, img_info
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
renderer.draw_image = function(image, x, y, w, h)
|
|
return nuklear_renderer.draw_image(image, x, y, w, h)
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
renderer.load_model = function(filename)
|
|
return threed_renderer.load_model(filename)
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
renderer.draw_model = function(model, x, y, w, h)
|
|
|
|
return threed_renderer.draw_model(model, x, y, w, h)
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
renderer.set_cursor = function()
|
|
nuklear_renderer.set_cursor()
|
|
end
|
|
|
|
-- --------------------------------------------------------------------------------------
|
|
|
|
renderer.find_glyph = find_glyph |