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| --[[ | |
| ImGuiTheme.lua - Simple theming for the ReaImGui API | |
| Initialize a new ImGuiTheme via `new` with a table containing (both optional): | |
| - `colors`->(list table of { `colorKeyValueOrFunction`, `colorValue` }) | |
| - `styles`->(list table of { `styleKeyValueOrFunction`, `styleValue1` [, ...`styleValueN`] }) | |
| The Returned object contains the following methods to be used where you would have originally | |
| called ImGui functions directly: | |
| - `push(ctx)`: calls `ImGui_PushStyleColor` and `ImGui_PushStyleVar` for each color and style defined | |
| - `pop(ctx)`: calls `ImGui_PopStyleColor` and `ImGui_PopStyleVar` with the correct `count` argument | |
| ]]-- | |
| ImGuiTheme = { | |
| -- Override the calls to the associated REAPER API methods here | |
| -- ...if you want to | |
| f_color_push = nil, | |
| f_color_pop = nil, | |
| f_style_push = nil, | |
| f_style_pop = nil, | |
| } | |
| ImGuiTheme.__index = ImGuiTheme | |
| ImGuiTheme.new = function(theme_definition) | |
| local theme = { | |
| colors = ImGuiTheme.get_attribute_values(theme_definition.colors), | |
| styles = ImGuiTheme.get_attribute_values(theme_definition.styles), | |
| } | |
| theme.color_count = #theme.colors | |
| theme.style_count = #theme.styles | |
| setmetatable(theme, ImGuiTheme) | |
| theme:init() | |
| return theme | |
| end | |
| function ImGuiTheme:init() | |
| self.f_color_push = ImGuiTheme.get_function('f_color_push', reaper.ImGui_PushStyleColor) | |
| self.f_color_pop = ImGuiTheme.get_function('f_color_pop', reaper.ImGui_PopStyleColor) | |
| self.f_style_push = ImGuiTheme.get_function('f_style_push', reaper.ImGui_PushStyleVar) | |
| self.f_style_pop = ImGuiTheme.get_function('f_style_pop', reaper.ImGui_PopStyleVar) | |
| end | |
| ImGuiTheme.get_attribute_values = function(raw_attributes) | |
| raw_attributes = raw_attributes or {} | |
| local attrs = {} | |
| for _, v in ipairs(raw_attributes) do | |
| if (type(v[1]) == "function") then | |
| v[1] = v[1]() | |
| end | |
| table.insert(attrs, v) | |
| end | |
| return attrs | |
| end | |
| ImGuiTheme.get_function = function(key, default) | |
| return ImGuiTheme[key] or default | |
| end | |
| function ImGuiTheme:push(ctx) | |
| for i = 1, self.color_count do | |
| self.f_color_push(ctx, self.colors[i][1], table.unpack(self.colors[i], 2)) | |
| end | |
| for i = 1, self.style_count do | |
| self.f_style_push(ctx, self.styles[i][1], table.unpack(self.styles[i], 2)) | |
| end | |
| end | |
| function ImGuiTheme:pop(ctx) | |
| self.f_color_pop(ctx, self.color_count) | |
| self.f_style_pop(ctx, self.style_count) | |
| end | |