111 lines
3.1 KiB
Lua
111 lines
3.1 KiB
Lua
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local core = require "core"
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local common = require "core.common"
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local command = require "core.command"
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local config = require "core.config"
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local keymap = require "core.keymap"
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local style = require "core.style"
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local RootView = require "core.rootview"
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local CommandView = require "core.commandview"
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config.scale_mode = "code"
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config.scale_use_mousewheel = true
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local font_cache = setmetatable({}, { __mode = "k" })
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-- the following should be kept in sync with core.style's default font settings
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font_cache[style.font] = { DATADIR .. "/data/fonts/font.ttf", 14 * SCALE }
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font_cache[style.big_font] = { DATADIR .. "/data/fonts/font.ttf", 34 * SCALE }
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font_cache[style.icon_font] = { DATADIR .. "/data/fonts/icons.ttf", 14 * SCALE }
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font_cache[style.code_font] = { DATADIR .. "/data/fonts/monospace.ttf", 13.5 * SCALE }
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local load_font = renderer.font.load
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function renderer.font.load(...)
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local res = load_font(...)
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font_cache[res] = { ... }
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return res
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end
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local function scale_font(font, s)
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local fc = font_cache[font]
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return renderer.font.load(fc[1], fc[2] * s)
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end
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local current_scale = SCALE
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local default = current_scale
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local function get_scale() return current_scale end
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local function set_scale(scale)
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scale = common.clamp(scale, 0.2, 6)
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-- save scroll positions
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local scrolls = {}
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for _, view in ipairs(core.root_view.root_node:get_children()) do
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local n = view:get_scrollable_size()
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if n ~= math.huge and not view:is(CommandView) then
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scrolls[view] = view.scroll.y / (n - view.size.y)
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end
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end
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local s = scale / current_scale
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current_scale = scale
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if config.scale_mode == "ui" then
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SCALE = current_scale
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style.padding.x = style.padding.x * s
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style.padding.y = style.padding.y * s
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style.divider_size = style.divider_size * s
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style.scrollbar_size = style.scrollbar_size * s
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style.caret_width = style.caret_width * s
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style.tab_width = style.tab_width * s
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style.big_font = scale_font(style.big_font, s)
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style.icon_font = scale_font(style.icon_font, s)
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style.font = scale_font(style.font, s)
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end
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style.code_font = scale_font(style.code_font, s)
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-- restore scroll positions
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for view, n in pairs(scrolls) do
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view.scroll.y = n * (view:get_scrollable_size() - view.size.y)
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view.scroll.to.y = view.scroll.y
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end
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core.redraw = true
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end
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local on_mouse_wheel = RootView.on_mouse_wheel
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function RootView:on_mouse_wheel(d, ...)
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if keymap.modkeys["ctrl"] and config.scale_use_mousewheel then
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if d < 0 then command.perform "scale:decrease" end
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if d > 0 then command.perform "scale:increase" end
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else
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return on_mouse_wheel(self, d, ...)
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end
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end
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command.add(nil, {
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["scale:reset" ] = function() set_scale(default) end,
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["scale:decrease"] = function() set_scale(current_scale * 0.9) end,
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["scale:increase"] = function() set_scale(current_scale * 1.1) end,
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})
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keymap.add {
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["ctrl+0"] = "scale:reset",
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["ctrl+-"] = "scale:decrease",
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["ctrl++"] = "scale:increase",
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}
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return { get_scale = get_scale, set_scale = set_scale }
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