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https://github.com/pyrollo/display_modpack.git
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wip
This commit is contained in:
Pierre-Yves Rollo
@@ -58,6 +58,7 @@ end
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--- Font class
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local Font = {}
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Font.__index = Font
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font_api.Font = Font
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function Font:new(def)
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@@ -70,31 +71,53 @@ function Font:new(def)
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local font = table.copy(def)
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if font.height == nil or font.height <= 0 then
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minetest.log("error",
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"[font_api] Font definition must have a positive height.")
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return nil
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end
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if type(font.widths) == "table" then
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if type(font.glyphs) == "table" then
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minetest.log("warning",
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"[font_api] Ingonring `widths` array in font definition as there is also a `glyphs` array.")
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else
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minetest.log("warning",
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"[font_api] Use of `widths` array in font definition is deprecated, please upgrade to `glyphs`.")
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font.glyphs = {}
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for codepoint, width in pairs(font.widths) do
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font.glyphs[codepoint] = { w = width, c = codepoint }
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end
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font.widths = nil
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-- Version 1 is with one texture per glyph
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if font.version == nil or font.version == 1 then
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if font.height == nil or font.height <= 0 then
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minetest.log("error",
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"[font_api] Font definition must have a positive height.")
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return nil
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end
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if type(font.widths) ~= "table" then
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minetest.log("error",
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"[font_api] Font definition must have a `widths` array.")
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return nil
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end
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-- Kind of convert to version 2
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font.glyphs = {}
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for codepoint, width in pairs(font.widths) do
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font.glyphs[codepoint] = { width, codepoint }
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end
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font.widths = nil
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font.glyphs_height = font.height
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font.height = nil
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end
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if type(font.glyphs) ~= "table" then
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minetest.log("error",
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"[font_api] Font definition must have a `glyphs` array.")
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return nil
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-- Version 2 is with one only texture for all glyphs, using `[sheet` textures
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if font.version == 2 then
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if type(font.glyphs) ~= "table" then
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minetest.log("error",
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"[font_api] Font definition must have a `glyphs` array.")
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return nil
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end
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if font.texture_height == nil or font.texture_height <= 0 then
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minetest.log("error",
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"[font_api] Font definition must have a positive `texture_height`.")
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return nil
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end
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if font.glyphs_height == nil or font.glyphs_height <= 0 then
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minetest.log("error",
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"[font_api] Font definition must have a positive `glyphs_height`.")
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return nil
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end
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font.vertical_number_of_tiles = math.floor(font.texture_height / font.glyphs_height)
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end
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if font.glyphs[0] == nil then
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@@ -103,8 +126,7 @@ function Font:new(def)
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return nil
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end
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setmetatable(font, self)
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self.__index = self
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setmetatable(font, self)
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return font
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end
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@@ -149,7 +171,8 @@ end
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-- @return Char width
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function Font:get_char_width(codepoint)
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return (self.glyphs[codepoint] or self.glyphs[0]).w
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-- [1] is char width
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return (self.glyphs[codepoint] or self.glyphs[0])[1]
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end
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--- Returns texture for a given glyph
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@@ -157,22 +180,18 @@ end
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-- @return Texture
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function Font:get_glyph_texture(glyph)
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if glyph.c then
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if #glyph == 4 then
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-- Actual version with one texture for all glyphs
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return string.format("font_%s.png^[sheet:%dx%d:%d,%d",
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self.name, glyph[2], self.vertical_number_of_tiles, glyph[3], glyph[4])
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end
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if #glyph == 2 then
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-- Former version with one texture per glyph
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return string.format("font_%s_%04x.png",
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self.name, glyph.c)
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end
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if glyph.x == nil or glyph.y == nil then
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-- Case of invisible chars like space (no need to add any texture)
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return ""
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self.name, glyph[2])
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end
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--le 5x15 est le nombre de tuiles, pas la taille des tuiles.
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return string.format("font_%s.png^[sheet:40x5:%d,%d",
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self.name, glyph.x, glyph.y)
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-- return string.format("font_%s.png^[sheet:%dx%d:%d,%d",
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-- self.name, glyph.w, self.height, glyph.x, glyph.y)
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-- Case of invisible chars like space (no need to add any texture)
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return ""
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end
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--- Text height for multiline text including margins and line spacing
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@@ -185,7 +204,7 @@ function Font:get_height(nb_of_lines)
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if nb_of_lines > 0 then
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return
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(
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(self.height or 0) +
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self.glyphs_height +
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(self.margintop or 0) +
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(self.marginbottom or 0)
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) * nb_of_lines +
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@@ -227,8 +246,8 @@ end
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--- Render text with the font in a view
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-- @param text Text to be rendered
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-- @param texturew Width (in pixels) of the texture (extra text will be truncated)
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-- @param textureh Height (in pixels) of the texture (extra text will be truncated)
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-- @param width Width (in pixels) of the texture (extra text will be truncated)
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-- @param height Height (in pixels) of the texture (extra text will be truncated)
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-- @param style Style of the rendering:
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-- - lines: maximum number of text lines (if text is limited)
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-- - halign: horizontal align ("left"/"center"/"right")
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@@ -236,7 +255,7 @@ end
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-- - color: color of the text ("#rrggbb")
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-- @return Texture string
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function Font:render(text, texturew, textureh, style)
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function Font:render(text, width, height, style)
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style = style or {}
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-- Split text into lines (and limit to style.lines # of lines)
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@@ -256,14 +275,14 @@ function Font:render(text, texturew, textureh, style)
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local x, y, codepoint
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local texture = ""
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local textheight = self:get_height(#lines)
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local text_height = self:get_height(#lines)
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if style.valign == "top" then
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y = 0
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elseif style.valign == "bottom" then
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y = textureh - textheight
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y = height - text_height
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else
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y = (textureh - textheight) / 2
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y = (height - text_height) / 2
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end
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y = y + (self.margintop or 0)
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@@ -272,9 +291,9 @@ function Font:render(text, texturew, textureh, style)
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if style.halign == "left" then
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x = 0
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elseif style.halign == "right" then
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x = texturew - l.width
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x = width - l.width
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else
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x = (texturew - l.width) / 2
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x = (width - l.width) / 2
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end
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while l.text ~= '' do
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@@ -284,17 +303,19 @@ function Font:render(text, texturew, textureh, style)
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local glyph = self.glyphs[codepoint]
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-- Add image only if it is visible (at least partly)
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if x + glyph.w >= 0 and x <= texturew then
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texture = string.format("%s:%d,%d=%s",
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texture, x, y, self:get_glyph_texture(glyph):gsub("[\\^:]", "\\%0"))
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if x + glyph[1] >= 0 and x <= width then
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local glyph_texture = self:get_glyph_texture(glyph):gsub("[\\^:]", "\\%0")
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if glyph_texture ~= '' then
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texture = string.format("%s:%d,%d=%s", texture, x, y, glyph_texture)
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end
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end
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x = x + glyph.w
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x = x + glyph[1]
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end
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y = y + self:get_height() + (self.linespacing or 0)
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end
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texture = string.format("[combine:%dx%d%s", texturew, textureh, texture)
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texture = string.format("[combine:%dx%d%s", width, height, texture)
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if style.color then
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texture = texture.."^[colorize:"..style.color
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end
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