mirror of
https://github.com/infinitefusion/infinitefusion-e18.git
synced 2025-12-06 06:01:46 +00:00
238 lines
6.7 KiB
Ruby
238 lines
6.7 KiB
Ruby
#===============================================================================
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#
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#===============================================================================
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class UIControls::List < UIControls::BaseControl
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LIST_X = 0
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LIST_Y = 0
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ROW_HEIGHT = 24
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TEXT_PADDING_X = 4
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TEXT_OFFSET_Y = 3
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SELECTED_ROW_COLOR = Color.green
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def initialize(width, height, viewport, values = [])
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super(width, height, viewport)
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@scrollbar = UIControls::Scrollbar.new(LIST_X + width - UIControls::Scrollbar::SLIDER_WIDTH, LIST_Y, height, viewport)
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@scrollbar.set_interactive_rects
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@scrollbar.range = ROW_HEIGHT
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@scrollbar.z = self.z + 1
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@rows_count = (height / ROW_HEIGHT).floor # Number of rows visible at once
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@top_row = 0
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@selected = -1
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self.values = values
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end
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def dispose
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@scrollbar.dispose
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@scrollbar = nil
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super
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end
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def x=(new_val)
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super(new_val)
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@scrollbar.x = new_val + LIST_X + width - UIControls::Scrollbar::SLIDER_WIDTH
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end
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def y=(new_val)
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super(new_val)
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@scrollbar.y = new_val + LIST_Y
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end
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def z=(new_val)
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super(new_val)
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@scrollbar.z = new_val + 1
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end
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def visible=(new_val)
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super
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@scrollbar.visible = new_val
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end
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# Each value in @values is an array: [id, text].
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def values=(new_vals)
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@values = new_vals
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set_interactive_rects
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@scrollbar.range = [@values.length, 1].max * ROW_HEIGHT
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if @scrollbar.visible
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self.top_row = (@scrollbar.position.to_f / ROW_HEIGHT).round
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else
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self.top_row = 0
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end
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self.selected = -1 if @selected >= @values.length
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invalidate
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end
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def top_row=(val)
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old_val = @top_row
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@top_row = val
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if @scrollbar.visible
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@top_row = @top_row.clamp(0, @values.length - @rows_count)
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else
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@top_row = 0
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end
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invalidate if @top_row != old_val
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end
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def selected=(val)
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return if @selected == val
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@selected = val
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invalidate
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end
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# Returns the ID of the selected row.
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def value
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return nil if @selected < 0
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if @values.is_a?(Array)
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return (@values[@selected].is_a?(Array)) ? @values[@selected][0] : @selected
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elsif @values.is_a?(Hash)
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return @values.keys[@selected]
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end
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return nil
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end
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def mouse_in_control?
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mouse_x, mouse_y = mouse_pos
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return false if !mouse_x || !mouse_y
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return true if Rect.new(0, 0, width, height).contains?(mouse_x, mouse_y)
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return true if @scrollbar.mouse_in_control?
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return false
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end
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def set_interactive_rects
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@interactions = {}
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@values.length.times do |i|
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@interactions[i] = Rect.new(LIST_X, LIST_Y + (ROW_HEIGHT * i), width - LIST_X, ROW_HEIGHT)
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end
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end
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#-----------------------------------------------------------------------------
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def busy?
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return !@captured_area.nil?
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end
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#-----------------------------------------------------------------------------
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def draw_area_highlight
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# If a row is captured, it will automatically be selected and the selection
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# colour will be drawn over the highlight. There's no point drawing a
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# highlight at all if anything is captured.
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return if @captured_area
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# Draw mouse hover over row highlight
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rect = @interactions[@hover_area]
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if rect
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rect_y = rect.y
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rect_y -= @top_row * ROW_HEIGHT if @hover_area.is_a?(Integer)
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self.bitmap.fill_rect(rect.x, rect_y, rect.width, rect.height, HOVER_COLOR)
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end
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end
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def repaint
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@scrollbar.repaint if @scrollbar.invalid?
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super if invalid?
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end
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def refresh
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super
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# Draw text options
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@values.each_with_index do |val, i|
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next if i < @top_row || i >= @top_row + @rows_count
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if @selected == i
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self.bitmap.fill_rect(
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@interactions[i].x,
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@interactions[i].y - (@top_row * ROW_HEIGHT),
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@interactions[i].width, @interactions[i].height,
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SELECTED_ROW_COLOR
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)
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end
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txt = (val.is_a?(Array)) ? val[1] : val
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draw_text(self.bitmap,
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@interactions[i].x + TEXT_PADDING_X,
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@interactions[i].y + TEXT_OFFSET_Y - (@top_row * ROW_HEIGHT),
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txt)
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end
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end
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#-----------------------------------------------------------------------------
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def on_mouse_press
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@captured_area = nil
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mouse_x, mouse_y = mouse_pos
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return if !mouse_x || !mouse_y
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return if @scrollbar.visible && (@scrollbar.busy? || mouse_x >= @scrollbar.x - self.x)
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# Check for mouse presses on rows
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mouse_y += @top_row * ROW_HEIGHT
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@interactions.each_pair do |area, rect|
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next if !area.is_a?(Integer) || area < @top_row || area >= @top_row + @rows_count
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next if !rect.contains?(mouse_x, mouse_y)
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@captured_area = area
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invalidate
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break
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end
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end
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def on_mouse_release
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return if !@captured_area # Wasn't captured to begin with
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set_changed
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super
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end
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def update_hover_highlight
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# Remove the hover highlight if there are no interactions for this control
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# or if the mouse is off-screen
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mouse_x, mouse_y = mouse_pos
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if !@interactions || @interactions.empty? || !mouse_x || !mouse_y
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invalidate if @hover_area
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@hover_area = nil
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return
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end
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# Don't update the highlight if the mouse is using the scrollbar
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if @scrollbar.visible && (@scrollbar.busy? || mouse_x >= @scrollbar.x - self.x)
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invalidate if @hover_area
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@hover_area = nil
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return
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end
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# Check each interactive area for whether the mouse is hovering over it, and
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# set @hover_area accordingly
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in_area = false
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mouse_y += @top_row * ROW_HEIGHT
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@interactions.each_pair do |area, rect|
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next if !area.is_a?(Integer) || area < @top_row || area >= @top_row + @rows_count
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next if !rect.contains?(mouse_x, mouse_y)
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invalidate if @hover_area != area
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@hover_area = area
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in_area = true
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break
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end
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if !in_area
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invalidate if @hover_area
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@hover_area = nil
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end
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end
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def update
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return if !self.visible
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@scrollbar.update
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super
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# Refresh the list's position if changed by moving the scrollbar
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self.top_row = (@scrollbar.position.to_f / ROW_HEIGHT).round
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# Set the selected row to the row the mouse is over, if clicked on
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if @captured_area
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@selected = @hover_area if @hover_area.is_a?(Integer)
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elsif @hover_area
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wheel_v = Input.scroll_v
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scroll_dist = UIControls::Scrollbar::SCROLL_DISTANCE
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scroll_dist /= 2 if @values.length / @rows_count > 20 # Arbitrary 20
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if wheel_v > 0 # Scroll up
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@scrollbar.slider_top -= scroll_dist
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elsif wheel_v < 0 # Scroll down
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@scrollbar.slider_top += scroll_dist
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end
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if wheel_v != 0
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self.top_row = (@scrollbar.position.to_f / ROW_HEIGHT).round
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update_hover_highlight
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end
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end
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end
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end
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