mirror of
https://github.com/Insality/druid
synced 2025-06-27 10:27:48 +02:00
322 lines
8.9 KiB
Lua
322 lines
8.9 KiB
Lua
-- Copyright (c) 2022 Maksim Tuprikov <insality@gmail.com>. This code is licensed under MIT license
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--- Druid Rich Input custom component.
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-- It's wrapper on Input component with cursor and placeholder text
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-- @module RichInput
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-- @alias druid.rich_input
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--- The component druid instance
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-- @tfield DruidInstance druid DruidInstance
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--- Root node
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-- @tfield node root
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--- On input field text change callback(self, input_text)
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-- @tfield Input input Input
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--- On input field text change to empty string callback(self, input_text)
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-- @tfield node cursor
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--- On input field text change to empty string callback(self, input_text)
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-- @tfield node cursor_text
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--- On input field text change to empty string callback(self, input_text)
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-- @tfield vector3 cursor_position
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--- On input field text change to empty string callback(self, input_text)
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-- @tfield druid.text input_text
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--- On input field text change to empty string callback(self, input_text)
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-- @tfield druid.drag drag
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--- On input field text change to empty string callback(self, input_text)
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-- @tfield druid.text placeholder
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--- On input field text change to empty string callback(self, input_text)
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-- @tfield vector3 text_position
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---
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local component = require("druid.component")
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local helper = require("druid.helper")
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local const = require("druid.const")
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local utf8_lua = require("druid.system.utf8")
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local utf8 = utf8 or utf8_lua
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---@class druid.rich_input: druid.component
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---@field root node
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---@field input druid.input
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---@field cursor node
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---@field cursor_text node
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---@field cursor_position vector3
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local M = component.create("druid.rich_input")
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--local SCHEME = {
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-- ROOT = "root",
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-- BUTTON = "button",
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-- PLACEHOLDER = "placeholder_text",
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-- INPUT = "input_text",
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-- CURSOR = "cursor_node",
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-- CURSOR_TEXT = "cursor_text",
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--}
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local DOUBLE_CLICK_TIME = 0.35
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local function animate_cursor(self)
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gui.cancel_animation(self.cursor_text, "color.w")
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gui.set_alpha(self.cursor_text, 1)
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gui.animate(self.cursor_text, "color.w", 0, gui.EASING_INSINE, 0.8, 0, nil, gui.PLAYBACK_LOOP_PINGPONG)
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end
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local function set_selection_width(self, selection_width)
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gui.set_visible(self.cursor, selection_width > 0)
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local width = selection_width / self.input.text.scale.x
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local height = gui.get_size(self.cursor).y
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gui.set_size(self.cursor, vmath.vector3(width, height, 0))
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local is_selection_to_right = self.input.cursor_index == self.input.end_index
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gui.set_pivot(self.cursor, is_selection_to_right and gui.PIVOT_E or gui.PIVOT_W)
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end
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local function update_text(self)
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local left_text_part = utf8.sub(self.input:get_text(), 0, self.input.cursor_index)
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local selected_text_part = utf8.sub(self.input:get_text(), self.input.start_index + 1, self.input.end_index)
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local left_part_width = self.input.text:get_text_size(left_text_part)
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local selected_part_width = self.input.text:get_text_size(selected_text_part)
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local pivot_text = gui.get_pivot(self.input.text.node)
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local pivot_offset = helper.get_pivot_offset(pivot_text)
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self.cursor_position.x = self.text_position.x - self.input.total_width * (0.5 + pivot_offset.x) + left_part_width
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gui.set_position(self.cursor, self.cursor_position)
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gui.set_scale(self.cursor, self.input.text.scale)
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set_selection_width(self, selected_part_width)
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end
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local function on_select(self)
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gui.set_enabled(self.cursor, true)
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gui.set_enabled(self.placeholder.node, false)
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gui.set_enabled(self.input.button.node, true)
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animate_cursor(self)
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self.drag:set_enabled(true)
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end
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local function on_unselect(self)
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gui.cancel_animation(self.cursor, gui.PROP_COLOR)
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gui.set_enabled(self.cursor, false)
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gui.set_enabled(self.input.button.node, self.is_button_input_enabled)
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gui.set_enabled(self.placeholder.node, true and #self.input:get_text() == 0)
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self.drag:set_enabled(false)
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end
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--- Update selection
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local function update_selection(self)
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update_text(self)
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end
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local TEMP_VECTOR = vmath.vector3(0)
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local function get_index_by_touch(self, touch)
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local text_node = self.input.text.node
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TEMP_VECTOR.x = touch.screen_x
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TEMP_VECTOR.y = touch.screen_y
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-- Distance to the text node position
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local scene_scale = helper.get_scene_scale(text_node)
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local local_pos = gui.screen_to_local(text_node, TEMP_VECTOR)
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local_pos.x = local_pos.x / scene_scale.x
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-- Offset to the left side of the text node
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local pivot_offset = helper.get_pivot_offset(gui.get_pivot(text_node))
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local_pos.x = local_pos.x + self.input.total_width * (0.5 + pivot_offset.x)
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local_pos.x = local_pos.x - self.text_position.x
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local cursor_index = self.input.text:get_text_index_by_width(local_pos.x)
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return cursor_index
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end
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local function on_touch_start_callback(self, touch)
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local cursor_index = get_index_by_touch(self, touch)
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if self._last_touch_info.cursor_index == cursor_index then
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local time = socket.gettime()
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if time - self._last_touch_info.time < DOUBLE_CLICK_TIME then
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local len = utf8.len(self.input:get_text())
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self.input:select_cursor(len, 0, len)
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self._last_touch_info.cursor_index = nil
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return
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end
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end
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self._last_touch_info.cursor_index = cursor_index
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self._last_touch_info.time = socket.gettime()
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if self.input.is_lshift then
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local start_index = self.input.start_index
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local end_index = self.input.end_index
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if cursor_index < start_index then
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self.input:select_cursor(cursor_index, cursor_index, end_index)
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elseif cursor_index > end_index then
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self.input:select_cursor(cursor_index, start_index, cursor_index)
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end
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else
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self.input:select_cursor(cursor_index)
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end
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end
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local function on_drag_callback(self, dx, dy, x, y, touch)
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if not self._last_touch_info.cursor_index then
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return
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end
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local index = get_index_by_touch(self, touch)
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if self._last_touch_info.cursor_index <= index then
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self.input:select_cursor(index, self._last_touch_info.cursor_index, index)
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else
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self.input:select_cursor(index, index, self._last_touch_info.cursor_index)
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end
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end
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---@param template string The template string name
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---@param nodes table Nodes table from gui.clone_tree
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function M:init(template, nodes)
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self.druid = self:get_druid(template, nodes)
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self.root = self:get_node("root")
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self._last_touch_info = {
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cursor_index = nil,
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time = 0,
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}
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self.is_lshift = false
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self.is_lctrl = false
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self.input = self.druid:new_input("button", "input_text")
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self.is_button_input_enabled = gui.is_enabled(self.input.button.node)
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self.cursor = self:get_node("cursor_node")
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self.cursor_position = gui.get_position(self.cursor)
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self.cursor_text = self:get_node("cursor_text")
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self.drag = self.druid:new_drag("button", on_drag_callback)
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self.drag.on_touch_start:subscribe(on_touch_start_callback)
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self.drag:set_input_priority(const.PRIORITY_INPUT_MAX + 1)
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self.drag:set_enabled(false)
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self.input:set_text("")
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self.placeholder = self.druid:new_text("placeholder_text")
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self.text_position = gui.get_position(self.input.text.node)
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self.input.on_input_text:subscribe(update_text)
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self.input.on_input_select:subscribe(on_select)
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self.input.on_input_unselect:subscribe(on_unselect)
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self.input.on_select_cursor_change:subscribe(update_selection)
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on_unselect(self)
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update_text(self)
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end
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function M:on_input(action_id, action)
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if action_id == const.ACTION_LSHIFT then
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if action.pressed then
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self.is_lshift = true
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elseif action.released then
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self.is_lshift = false
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end
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end
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if action_id == const.ACTION_LCTRL or action_id == const.ACTION_LCMD then
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if action.pressed then
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self.is_lctrl = true
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elseif action.released then
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self.is_lctrl = false
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end
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end
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if self.input.is_selected then
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if action_id == const.ACTION_LEFT and (action.pressed or action.repeated) then
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self.input:move_selection(-1, self.is_lshift, self.is_lctrl)
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return true
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end
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if action_id == const.ACTION_RIGHT and (action.pressed or action.repeated) then
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self.input:move_selection(1, self.is_lshift, self.is_lctrl)
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return true
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end
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end
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end
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--- Set placeholder text
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---@param placeholder_text string The placeholder text
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function M:set_placeholder(placeholder_text)
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self.placeholder:set_text(placeholder_text)
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return self
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end
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--- Select input field
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function M:select()
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self.input:select()
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end
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--- Set input field text
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---@param text string The input text
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---@return druid.rich_input self Current instance
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function M:set_text(text)
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self.input:set_text(text)
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gui.set_enabled(self.placeholder.node, true and #self.input:get_text() == 0)
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return self
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end
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--- Set input field font
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---@param font hash The font hash
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---@return druid.rich_input self Current instance
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function M:set_font(font)
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gui.set_font(self.input.text.node, font)
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gui.set_font(self.placeholder.node, font)
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return self
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end
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--- Set input field text
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function M:get_text()
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return self.input:get_text()
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end
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--- Set allowed charaters for input field.
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-- See: https://defold.com/ref/stable/string/
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-- ex: [%a%d] for alpha and numeric
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---@param characters string Regulax exp. for validate user input
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---@return druid.rich_input Current instance
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function M:set_allowed_characters(characters)
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self.input:set_allowed_characters(characters)
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return self
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end
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return M
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