experiment: new edit namespace
Still lots to do, but the eventual hope is that this will make this project's code easier to reuse from other LÖVE projects. One gotcha: even as we start putting code more aggressively into nested tables, tests must remain at the top-level. Otherwise they won't run.
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@ -24,6 +24,10 @@ Lua is dynamically typed. Tests can't patch over lack of type-checking.
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* Like any high-level language, it's easy to accidentally alias two non-scalar
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variables. I wish there was a way to require copy when assigning.
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* My test harness automatically runs `test_*` methods -- but only at the
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top-level. I wish there was a way to raise warnings if someone defines such
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a function inside a dict somewhere.
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### Todo list
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* Initializing settings:
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@ -0,0 +1,446 @@
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utf8 = require 'utf8'
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require 'file'
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require 'button'
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require 'text'
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require 'drawing'
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require 'geom'
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require 'help'
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require 'icons'
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edit = {}
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-- run in both tests and a real run
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function edit.initialize_globals()
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-- a line is either text or a drawing
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-- a text is a table with:
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-- mode = 'text',
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-- string data,
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-- startpos, the index of data the line starts rendering from (if currently on screen), can only be >1 for topmost line on screen
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-- starty, the y coord in pixels
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-- some cached data that's blown away and recomputed when data changes:
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-- fragments: snippets of rendered love.graphics.Text, guaranteed to not wrap
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-- screen_line_starting_pos: optional array of grapheme indices if it wraps over more than one screen line
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-- a drawing is a table with:
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-- mode = 'drawing'
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-- a (y) coord in pixels (updated while painting screen),
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-- a (h)eight,
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-- an array of points, and
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-- an array of shapes
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-- a shape is a table containing:
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-- a mode
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-- an array points for mode 'freehand' (raw x,y coords; freehand drawings don't pollute the points array of a drawing)
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-- an array vertices for mode 'polygon', 'rectangle', 'square'
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-- p1, p2 for mode 'line'
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-- center, radius for mode 'circle'
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-- center, radius, start_angle, end_angle for mode 'arc'
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-- Unless otherwise specified, coord fields are normalized; a drawing is always 256 units wide
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-- The field names are carefully chosen so that switching modes in midstream
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-- remembers previously entered points where that makes sense.
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Lines = {{mode='text', data=''}}
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-- Lines can be too long to fit on screen, in which case they _wrap_ into
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-- multiple _screen lines_.
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--
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-- Therefore, any potential location for the cursor can be described in two ways:
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-- * schema 1: As a combination of line index and position within a line (in utf8 codepoint units)
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-- * schema 2: As a combination of line index, screen line index within the line, and a position within the screen line.
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--
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-- Most of the time we'll only persist positions in schema 1, translating to
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-- schema 2 when that's convenient.
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--
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-- Make sure these coordinates are never aliased, so that changing one causes
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-- action at a distance.
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Screen_top1 = {line=1, pos=1} -- position of start of screen line at top of screen
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Cursor1 = {line=1, pos=1} -- position of cursor
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Screen_bottom1 = {line=1, pos=1} -- position of start of screen line at bottom of screen
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Selection1 = {}
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Old_cursor1, Old_selection1, Mousepress_shift = nil -- some extra state to compute selection between mouse press and release
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Recent_mouse = {} -- when selecting text, avoid recomputing some state on every single frame
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Cursor_x, Cursor_y = 0, 0 -- in pixels
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Current_drawing_mode = 'line'
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Previous_drawing_mode = nil
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-- values for tests
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Font_height = 14
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Line_height = 15
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-- widest possible character width
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Em = App.newText(love.graphics.getFont(), 'm')
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Margin_top = 15
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Margin_left = 25
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Margin_right = 25
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Margin_width = Margin_left + Margin_right
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Drawing_padding_top = 10
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Drawing_padding_bottom = 10
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Drawing_padding_height = Drawing_padding_top + Drawing_padding_bottom
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Filename = love.filesystem.getUserDirectory()..'/lines.txt'
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Next_save = nil
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-- undo
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History = {}
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Next_history = 1
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-- search
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Search_term = nil
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Search_text = nil
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Search_backup = nil -- stuff to restore when cancelling search
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-- resize
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Last_resize_time = nil
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-- blinking cursor
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Cursor_time = 0
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end -- App.initialize_globals
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function edit.draw()
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Button_handlers = {}
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love.graphics.setColor(0, 0, 0)
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--? print(Screen_top1.line, Screen_top1.pos, Cursor1.line, Cursor1.pos)
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assert(Text.le1(Screen_top1, Cursor1))
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Cursor_y = -1
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local y = Margin_top
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--? print('== draw')
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for line_index = Screen_top1.line,#Lines do
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local line = Lines[line_index]
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--? print('draw:', y, line_index, line)
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if y + Line_height > App.screen.height then break end
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Screen_bottom1.line = line_index
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if line.mode == 'text' and line.data == '' then
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line.starty = y
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line.startpos = 1
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-- insert new drawing
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button('draw', {x=4,y=y+4, w=12,h=12, color={1,1,0},
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icon = icon.insert_drawing,
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onpress1 = function()
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Drawing.before = snapshot(line_index-1, line_index)
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table.insert(Lines, line_index, {mode='drawing', y=y, h=256/2, points={}, shapes={}, pending={}})
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if Cursor1.line >= line_index then
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Cursor1.line = Cursor1.line+1
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end
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schedule_save()
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record_undo_event({before=Drawing.before, after=snapshot(line_index-1, line_index+1)})
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end
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})
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if Search_term == nil then
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if line_index == Cursor1.line then
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Text.draw_cursor(Margin_left, y)
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end
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end
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Screen_bottom1.pos = Screen_top1.pos
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y = y + Line_height
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elseif line.mode == 'drawing' then
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y = y+Drawing_padding_top
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line.y = y
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Drawing.draw(line)
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y = y + Drawing.pixels(line.h) + Drawing_padding_bottom
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else
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line.starty = y
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line.startpos = 1
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if line_index == Screen_top1.line then
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line.startpos = Screen_top1.pos
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end
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--? print('text.draw', y, line_index)
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y, Screen_bottom1.pos = Text.draw(line, line_index, line.starty, Margin_left, App.screen.width-Margin_right)
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y = y + Line_height
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--? print('=> y', y)
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end
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end
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if Cursor_y == -1 then
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Cursor_y = App.screen.height
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end
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--? print('screen bottom: '..tostring(Screen_bottom1.pos)..' in '..tostring(Lines[Screen_bottom1.line].data))
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if Search_term then
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Text.draw_search_bar()
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end
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end
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function edit.update(dt)
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Cursor_time = Cursor_time + dt
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-- some hysteresis while resizing
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if Last_resize_time then
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if App.getTime() - Last_resize_time < 0.1 then
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return
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else
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Last_resize_time = nil
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end
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end
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Drawing.update(dt)
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if Next_save and Next_save < App.getTime() then
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save_to_disk(Lines, Filename)
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Next_save = nil
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end
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end
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function schedule_save()
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if Next_save == nil then
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Next_save = App.getTime() + 3 -- short enough that you're likely to still remember what you did
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end
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end
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function edit.quit()
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-- make sure to save before quitting
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if Next_save then
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save_to_disk(Lines, Filename)
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end
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end
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function edit.mouse_pressed(x,y, mouse_button)
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if Search_term then return end
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-- ensure cursor is visible immediately after it moves
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Cursor_time = 0
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--? print('press', Selection1.line, Selection1.pos)
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propagate_to_button_handlers(x,y, mouse_button)
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for line_index,line in ipairs(Lines) do
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if line.mode == 'text' then
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if Text.in_line(line, x,y, Margin_left, App.screen.width-Margin_right) then
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-- delicate dance between cursor, selection and old cursor/selection
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-- scenarios:
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-- regular press+release: sets cursor, clears selection
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-- shift press+release:
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-- sets selection to old cursor if not set otherwise leaves it untouched
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-- sets cursor
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-- press and hold to start a selection: sets selection on press, cursor on release
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-- press and hold, then press shift: ignore shift
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-- i.e. mousereleased should never look at shift state
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Old_cursor1 = Cursor1
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Old_selection1 = Selection1
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Mousepress_shift = App.shift_down()
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Selection1 = {
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line=line_index,
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pos=Text.to_pos_on_line(line, x, y, Margin_left, App.screen.width-Margin_right),
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}
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--? print('selection', Selection1.line, Selection1.pos)
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break
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end
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elseif line.mode == 'drawing' then
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if Drawing.in_drawing(line, x, y) then
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Lines.current_drawing_index = line_index
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Lines.current_drawing = line
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Drawing.before = snapshot(line_index)
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Drawing.mouse_pressed(line, x,y, mouse_button)
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break
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end
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end
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end
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end
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function edit.mouse_released(x,y, mouse_button)
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if Search_term then return end
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--? print('release')
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-- ensure cursor is visible immediately after it moves
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Cursor_time = 0
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if Lines.current_drawing then
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Drawing.mouse_released(x,y, mouse_button)
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schedule_save()
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if Drawing.before then
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record_undo_event({before=Drawing.before, after=snapshot(Lines.current_drawing_index)})
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Drawing.before = nil
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end
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else
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for line_index,line in ipairs(Lines) do
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if line.mode == 'text' then
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if Text.in_line(line, x,y, Margin_left, App.screen.width-Margin_right) then
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--? print('reset selection')
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Cursor1 = {
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line=line_index,
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pos=Text.to_pos_on_line(line, x, y, Margin_left, App.screen.width-Margin_right),
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}
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--? print('cursor', Cursor1.line, Cursor1.pos)
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if Mousepress_shift then
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if Old_selection1.line == nil then
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Selection1 = Old_cursor1
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else
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Selection1 = Old_selection1
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end
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end
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Old_cursor1, Old_selection1, Mousepress_shift = nil
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if eq(Cursor1, Selection1) then
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Selection1 = {}
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end
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break
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end
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end
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end
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--? print('selection:', Selection1.line, Selection1.pos)
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end
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end
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function edit.textinput(t)
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-- ensure cursor is visible immediately after it moves
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Cursor_time = 0
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for _,line in ipairs(Lines) do line.y = nil end -- just in case we scroll
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if Search_term then
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Search_term = Search_term..t
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Search_text = nil
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Text.search_next()
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elseif Current_drawing_mode == 'name' then
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local before = snapshot(Lines.current_drawing_index)
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local drawing = Lines.current_drawing
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local p = drawing.points[drawing.pending.target_point]
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p.name = p.name..t
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record_undo_event({before=before, after=snapshot(Lines.current_drawing_index)})
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else
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Text.textinput(t)
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end
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schedule_save()
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end
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function edit.keychord_pressed(chord, key)
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-- ensure cursor is visible immediately after it moves
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Cursor_time = 0
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if Selection1.line and
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not Lines.current_drawing and
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-- printable character created using shift key => delete selection
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-- (we're not creating any ctrl-shift- or alt-shift- combinations using regular/printable keys)
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(not App.shift_down() or utf8.len(key) == 1) and
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chord ~= 'C-c' and chord ~= 'C-x' and chord ~= 'backspace' and backspace ~= 'delete' and not App.is_cursor_movement(chord) then
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Text.delete_selection(Margin_left, App.screen.width-Margin_right)
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end
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if Search_term then
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if chord == 'escape' then
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Search_term = nil
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Search_text = nil
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Cursor1 = Search_backup.cursor
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Screen_top1 = Search_backup.screen_top
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Search_backup = nil
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Text.redraw_all() -- if we're scrolling, reclaim all fragments to avoid memory leaks
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elseif chord == 'return' then
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Search_term = nil
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Search_text = nil
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Search_backup = nil
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elseif chord == 'backspace' then
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local len = utf8.len(Search_term)
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local byte_offset = Text.offset(Search_term, len)
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Search_term = string.sub(Search_term, 1, byte_offset-1)
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Search_text = nil
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elseif chord == 'down' then
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Cursor1.pos = Cursor1.pos+1
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Text.search_next()
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elseif chord == 'up' then
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Text.search_previous()
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end
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return
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elseif chord == 'C-f' then
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Search_term = ''
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Search_backup = {cursor={line=Cursor1.line, pos=Cursor1.pos}, screen_top={line=Screen_top1.line, pos=Screen_top1.pos}}
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assert(Search_text == nil)
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elseif chord == 'C-=' then
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initialize_font_settings(Font_height+2)
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Text.redraw_all()
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elseif chord == 'C--' then
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initialize_font_settings(Font_height-2)
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Text.redraw_all()
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elseif chord == 'C-0' then
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initialize_font_settings(20)
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Text.redraw_all()
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elseif chord == 'C-z' then
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for _,line in ipairs(Lines) do line.y = nil end -- just in case we scroll
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local event = undo_event()
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if event then
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local src = event.before
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Screen_top1 = deepcopy(src.screen_top)
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Cursor1 = deepcopy(src.cursor)
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Selection1 = deepcopy(src.selection)
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patch(Lines, event.after, event.before)
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Text.redraw_all() -- if we're scrolling, reclaim all fragments to avoid memory leaks
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schedule_save()
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end
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elseif chord == 'C-y' then
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for _,line in ipairs(Lines) do line.y = nil end -- just in case we scroll
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local event = redo_event()
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if event then
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local src = event.after
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Screen_top1 = deepcopy(src.screen_top)
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Cursor1 = deepcopy(src.cursor)
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Selection1 = deepcopy(src.selection)
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patch(Lines, event.before, event.after)
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Text.redraw_all() -- if we're scrolling, reclaim all fragments to avoid memory leaks
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schedule_save()
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end
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-- clipboard
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elseif chord == 'C-c' then
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for _,line in ipairs(Lines) do line.y = nil end -- just in case we scroll
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local s = Text.selection()
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if s then
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App.setClipboardText(s)
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end
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elseif chord == 'C-x' then
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for _,line in ipairs(Lines) do line.y = nil end -- just in case we scroll
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local s = Text.cut_selection(Margin_left, App.screen.width-Margin_right)
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if s then
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App.setClipboardText(s)
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end
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schedule_save()
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elseif chord == 'C-v' then
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for _,line in ipairs(Lines) do line.y = nil end -- just in case we scroll
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-- We don't have a good sense of when to scroll, so we'll be conservative
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-- and sometimes scroll when we didn't quite need to.
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local before_line = Cursor1.line
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local before = snapshot(before_line)
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local clipboard_data = App.getClipboardText()
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for _,code in utf8.codes(clipboard_data) do
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local c = utf8.char(code)
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if c == '\n' then
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Text.insert_return()
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else
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Text.insert_at_cursor(c)
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end
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end
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if Text.cursor_past_screen_bottom() then
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Text.snap_cursor_to_bottom_of_screen(Margin_left, App.screen.height-Margin_right)
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end
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schedule_save()
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record_undo_event({before=before, after=snapshot(before_line, Cursor1.line)})
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-- dispatch to drawing or text
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elseif App.mouse_down(1) or chord:sub(1,2) == 'C-' then
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-- DON'T reset line.y here
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local drawing_index, drawing = Drawing.current_drawing()
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if drawing_index then
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local before = snapshot(drawing_index)
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Drawing.keychord_pressed(chord)
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record_undo_event({before=before, after=snapshot(drawing_index)})
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schedule_save()
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end
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elseif chord == 'escape' and not App.mouse_down(1) then
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for _,line in ipairs(Lines) do
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if line.mode == 'drawing' then
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line.show_help = false
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end
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end
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elseif Current_drawing_mode == 'name' then
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if chord == 'return' then
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Current_drawing_mode = Previous_drawing_mode
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Previous_drawing_mode = nil
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else
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local before = snapshot(Lines.current_drawing_index)
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local drawing = Lines.current_drawing
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local p = drawing.points[drawing.pending.target_point]
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if chord == 'escape' then
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p.name = nil
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record_undo_event({before=before, after=snapshot(Lines.current_drawing_index)})
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elseif chord == 'backspace' then
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local len = utf8.len(p.name)
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local byte_offset = Text.offset(p.name, len-1)
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if len == 1 then byte_offset = 0 end
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p.name = string.sub(p.name, 1, byte_offset)
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record_undo_event({before=before, after=snapshot(Lines.current_drawing_index)})
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end
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end
|
||||
schedule_save()
|
||||
else
|
||||
for _,line in ipairs(Lines) do line.y = nil end -- just in case we scroll
|
||||
Text.keychord_pressed(chord)
|
||||
end
|
||||
end
|
||||
|
||||
function edit.key_released(key, scancode)
|
||||
end
|
429
main.lua
429
main.lua
|
@ -2,106 +2,17 @@ utf8 = require 'utf8'
|
|||
|
||||
require 'app'
|
||||
require 'test'
|
||||
|
||||
require 'keychord'
|
||||
require 'file'
|
||||
require 'button'
|
||||
require 'text'
|
||||
require 'drawing'
|
||||
require 'geom'
|
||||
require 'help'
|
||||
require 'icons'
|
||||
|
||||
require 'main_tests'
|
||||
|
||||
-- delegate most business logic to a layer that can be reused by other projects
|
||||
require 'edit'
|
||||
|
||||
-- called both in tests and real run
|
||||
function App.initialize_globals()
|
||||
-- a line is either text or a drawing
|
||||
-- a text is a table with:
|
||||
-- mode = 'text',
|
||||
-- string data,
|
||||
-- startpos, the index of data the line starts rendering from (if currently on screen), can only be >1 for topmost line on screen
|
||||
-- starty, the y coord in pixels
|
||||
-- some cached data that's blown away and recomputed when data changes:
|
||||
-- fragments: snippets of rendered love.graphics.Text, guaranteed to not wrap
|
||||
-- screen_line_starting_pos: optional array of grapheme indices if it wraps over more than one screen line
|
||||
-- a drawing is a table with:
|
||||
-- mode = 'drawing'
|
||||
-- a (y) coord in pixels (updated while painting screen),
|
||||
-- a (h)eight,
|
||||
-- an array of points, and
|
||||
-- an array of shapes
|
||||
-- a shape is a table containing:
|
||||
-- a mode
|
||||
-- an array points for mode 'freehand' (raw x,y coords; freehand drawings don't pollute the points array of a drawing)
|
||||
-- an array vertices for mode 'polygon', 'rectangle', 'square'
|
||||
-- p1, p2 for mode 'line'
|
||||
-- center, radius for mode 'circle'
|
||||
-- center, radius, start_angle, end_angle for mode 'arc'
|
||||
-- Unless otherwise specified, coord fields are normalized; a drawing is always 256 units wide
|
||||
-- The field names are carefully chosen so that switching modes in midstream
|
||||
-- remembers previously entered points where that makes sense.
|
||||
Lines = {{mode='text', data=''}}
|
||||
|
||||
-- Lines can be too long to fit on screen, in which case they _wrap_ into
|
||||
-- multiple _screen lines_.
|
||||
--
|
||||
-- Therefore, any potential location for the cursor can be described in two ways:
|
||||
-- * schema 1: As a combination of line index and position within a line (in utf8 codepoint units)
|
||||
-- * schema 2: As a combination of line index, screen line index within the line, and a position within the screen line.
|
||||
--
|
||||
-- Most of the time we'll only persist positions in schema 1, translating to
|
||||
-- schema 2 when that's convenient.
|
||||
--
|
||||
-- Make sure these coordinates are never aliased, so that changing one causes
|
||||
-- action at a distance.
|
||||
Screen_top1 = {line=1, pos=1} -- position of start of screen line at top of screen
|
||||
Cursor1 = {line=1, pos=1} -- position of cursor
|
||||
Screen_bottom1 = {line=1, pos=1} -- position of start of screen line at bottom of screen
|
||||
|
||||
Selection1 = {}
|
||||
Old_cursor1, Old_selection1, Mousepress_shift = nil -- some extra state to compute selection between mouse press and release
|
||||
Recent_mouse = {} -- when selecting text, avoid recomputing some state on every single frame
|
||||
|
||||
Cursor_x, Cursor_y = 0, 0 -- in pixels
|
||||
|
||||
Current_drawing_mode = 'line'
|
||||
Previous_drawing_mode = nil
|
||||
|
||||
-- values for tests
|
||||
Font_height = 14
|
||||
Line_height = 15
|
||||
-- widest possible character width
|
||||
Em = App.newText(love.graphics.getFont(), 'm')
|
||||
|
||||
Margin_top = 15
|
||||
Margin_left = 25
|
||||
Margin_right = 25
|
||||
Margin_width = Margin_left + Margin_right
|
||||
|
||||
Drawing_padding_top = 10
|
||||
Drawing_padding_bottom = 10
|
||||
Drawing_padding_height = Drawing_padding_top + Drawing_padding_bottom
|
||||
|
||||
Filename = love.filesystem.getUserDirectory()..'/lines.txt'
|
||||
Next_save = nil
|
||||
|
||||
-- undo
|
||||
History = {}
|
||||
Next_history = 1
|
||||
|
||||
-- search
|
||||
Search_term = nil
|
||||
Search_text = nil
|
||||
Search_backup = nil -- stuff to restore when cancelling search
|
||||
|
||||
-- resize
|
||||
Last_resize_time = nil
|
||||
|
||||
-- blinking cursor
|
||||
Cursor_time = 0
|
||||
|
||||
end -- App.initialize_globals
|
||||
return edit.initialize_globals()
|
||||
end
|
||||
|
||||
-- called only for real run
|
||||
function App.initialize(arg)
|
||||
|
@ -225,96 +136,15 @@ function App.filedropped(file)
|
|||
end
|
||||
|
||||
function App.draw()
|
||||
Button_handlers = {}
|
||||
|
||||
love.graphics.setColor(0, 0, 0)
|
||||
--? print(Screen_top1.line, Screen_top1.pos, Cursor1.line, Cursor1.pos)
|
||||
assert(Text.le1(Screen_top1, Cursor1))
|
||||
Cursor_y = -1
|
||||
local y = Margin_top
|
||||
--? print('== draw')
|
||||
for line_index = Screen_top1.line,#Lines do
|
||||
local line = Lines[line_index]
|
||||
--? print('draw:', y, line_index, line)
|
||||
if y + Line_height > App.screen.height then break end
|
||||
Screen_bottom1.line = line_index
|
||||
if line.mode == 'text' and line.data == '' then
|
||||
line.starty = y
|
||||
line.startpos = 1
|
||||
-- insert new drawing
|
||||
button('draw', {x=4,y=y+4, w=12,h=12, color={1,1,0},
|
||||
icon = icon.insert_drawing,
|
||||
onpress1 = function()
|
||||
Drawing.before = snapshot(line_index-1, line_index)
|
||||
table.insert(Lines, line_index, {mode='drawing', y=y, h=256/2, points={}, shapes={}, pending={}})
|
||||
if Cursor1.line >= line_index then
|
||||
Cursor1.line = Cursor1.line+1
|
||||
end
|
||||
schedule_save()
|
||||
record_undo_event({before=Drawing.before, after=snapshot(line_index-1, line_index+1)})
|
||||
end
|
||||
})
|
||||
if Search_term == nil then
|
||||
if line_index == Cursor1.line then
|
||||
Text.draw_cursor(Margin_left, y)
|
||||
end
|
||||
end
|
||||
Screen_bottom1.pos = Screen_top1.pos
|
||||
y = y + Line_height
|
||||
elseif line.mode == 'drawing' then
|
||||
y = y+Drawing_padding_top
|
||||
line.y = y
|
||||
Drawing.draw(line)
|
||||
y = y + Drawing.pixels(line.h) + Drawing_padding_bottom
|
||||
else
|
||||
line.starty = y
|
||||
line.startpos = 1
|
||||
if line_index == Screen_top1.line then
|
||||
line.startpos = Screen_top1.pos
|
||||
end
|
||||
--? print('text.draw', y, line_index)
|
||||
y, Screen_bottom1.pos = Text.draw(line, line_index, line.starty, Margin_left, App.screen.width-Margin_right)
|
||||
y = y + Line_height
|
||||
--? print('=> y', y)
|
||||
end
|
||||
end
|
||||
if Cursor_y == -1 then
|
||||
Cursor_y = App.screen.height
|
||||
end
|
||||
--? print('screen bottom: '..tostring(Screen_bottom1.pos)..' in '..tostring(Lines[Screen_bottom1.line].data))
|
||||
if Search_term then
|
||||
Text.draw_search_bar()
|
||||
end
|
||||
edit.draw()
|
||||
end
|
||||
|
||||
function App.update(dt)
|
||||
Cursor_time = Cursor_time + dt
|
||||
-- some hysteresis while resizing
|
||||
if Last_resize_time then
|
||||
if App.getTime() - Last_resize_time < 0.1 then
|
||||
return
|
||||
else
|
||||
Last_resize_time = nil
|
||||
end
|
||||
end
|
||||
Drawing.update(dt)
|
||||
if Next_save and Next_save < App.getTime() then
|
||||
save_to_disk(Lines, Filename)
|
||||
Next_save = nil
|
||||
end
|
||||
end
|
||||
|
||||
function schedule_save()
|
||||
if Next_save == nil then
|
||||
Next_save = App.getTime() + 3 -- short enough that you're likely to still remember what you did
|
||||
end
|
||||
edit.update(dt)
|
||||
end
|
||||
|
||||
function love.quit()
|
||||
-- make sure to save before quitting
|
||||
if Next_save then
|
||||
save_to_disk(Lines, Filename)
|
||||
end
|
||||
edit.quit()
|
||||
-- save some important settings
|
||||
local x,y,displayindex = love.window.getPosition()
|
||||
local filename = Filename
|
||||
|
@ -331,254 +161,21 @@ function love.quit()
|
|||
end
|
||||
|
||||
function App.mousepressed(x,y, mouse_button)
|
||||
if Search_term then return end
|
||||
-- ensure cursor is visible immediately after it moves
|
||||
Cursor_time = 0
|
||||
--? print('press', Selection1.line, Selection1.pos)
|
||||
propagate_to_button_handlers(x,y, mouse_button)
|
||||
|
||||
for line_index,line in ipairs(Lines) do
|
||||
if line.mode == 'text' then
|
||||
if Text.in_line(line, x,y, Margin_left, App.screen.width-Margin_right) then
|
||||
-- delicate dance between cursor, selection and old cursor/selection
|
||||
-- scenarios:
|
||||
-- regular press+release: sets cursor, clears selection
|
||||
-- shift press+release:
|
||||
-- sets selection to old cursor if not set otherwise leaves it untouched
|
||||
-- sets cursor
|
||||
-- press and hold to start a selection: sets selection on press, cursor on release
|
||||
-- press and hold, then press shift: ignore shift
|
||||
-- i.e. mousereleased should never look at shift state
|
||||
Old_cursor1 = Cursor1
|
||||
Old_selection1 = Selection1
|
||||
Mousepress_shift = App.shift_down()
|
||||
Selection1 = {
|
||||
line=line_index,
|
||||
pos=Text.to_pos_on_line(line, x, y, Margin_left, App.screen.width-Margin_right),
|
||||
}
|
||||
--? print('selection', Selection1.line, Selection1.pos)
|
||||
break
|
||||
end
|
||||
elseif line.mode == 'drawing' then
|
||||
if Drawing.in_drawing(line, x, y) then
|
||||
Lines.current_drawing_index = line_index
|
||||
Lines.current_drawing = line
|
||||
Drawing.before = snapshot(line_index)
|
||||
Drawing.mouse_pressed(line, x,y, mouse_button)
|
||||
break
|
||||
end
|
||||
end
|
||||
end
|
||||
return edit.mouse_pressed(x,y, mouse_button)
|
||||
end
|
||||
|
||||
function App.mousereleased(x,y, mouse_button)
|
||||
if Search_term then return end
|
||||
--? print('release')
|
||||
-- ensure cursor is visible immediately after it moves
|
||||
Cursor_time = 0
|
||||
if Lines.current_drawing then
|
||||
Drawing.mouse_released(x,y, mouse_button)
|
||||
schedule_save()
|
||||
if Drawing.before then
|
||||
record_undo_event({before=Drawing.before, after=snapshot(Lines.current_drawing_index)})
|
||||
Drawing.before = nil
|
||||
end
|
||||
else
|
||||
for line_index,line in ipairs(Lines) do
|
||||
if line.mode == 'text' then
|
||||
if Text.in_line(line, x,y, Margin_left, App.screen.width-Margin_right) then
|
||||
--? print('reset selection')
|
||||
Cursor1 = {
|
||||
line=line_index,
|
||||
pos=Text.to_pos_on_line(line, x, y, Margin_left, App.screen.width-Margin_right),
|
||||
}
|
||||
--? print('cursor', Cursor1.line, Cursor1.pos)
|
||||
if Mousepress_shift then
|
||||
if Old_selection1.line == nil then
|
||||
Selection1 = Old_cursor1
|
||||
else
|
||||
Selection1 = Old_selection1
|
||||
end
|
||||
end
|
||||
Old_cursor1, Old_selection1, Mousepress_shift = nil
|
||||
if eq(Cursor1, Selection1) then
|
||||
Selection1 = {}
|
||||
end
|
||||
break
|
||||
end
|
||||
end
|
||||
end
|
||||
--? print('selection:', Selection1.line, Selection1.pos)
|
||||
end
|
||||
return edit.mouse_released(x,y, mouse_button)
|
||||
end
|
||||
|
||||
function App.textinput(t)
|
||||
-- ensure cursor is visible immediately after it moves
|
||||
Cursor_time = 0
|
||||
for _,line in ipairs(Lines) do line.y = nil end -- just in case we scroll
|
||||
if Search_term then
|
||||
Search_term = Search_term..t
|
||||
Search_text = nil
|
||||
Text.search_next()
|
||||
elseif Current_drawing_mode == 'name' then
|
||||
local before = snapshot(Lines.current_drawing_index)
|
||||
local drawing = Lines.current_drawing
|
||||
local p = drawing.points[drawing.pending.target_point]
|
||||
p.name = p.name..t
|
||||
record_undo_event({before=before, after=snapshot(Lines.current_drawing_index)})
|
||||
else
|
||||
Text.textinput(t)
|
||||
end
|
||||
schedule_save()
|
||||
return edit.textinput(t)
|
||||
end
|
||||
|
||||
function App.keychord_pressed(chord, key)
|
||||
-- ensure cursor is visible immediately after it moves
|
||||
Cursor_time = 0
|
||||
if Selection1.line and
|
||||
not Lines.current_drawing and
|
||||
-- printable character created using shift key => delete selection
|
||||
-- (we're not creating any ctrl-shift- or alt-shift- combinations using regular/printable keys)
|
||||
(not App.shift_down() or utf8.len(key) == 1) and
|
||||
chord ~= 'C-c' and chord ~= 'C-x' and chord ~= 'backspace' and backspace ~= 'delete' and not App.is_cursor_movement(chord) then
|
||||
Text.delete_selection(Margin_left, App.screen.width-Margin_right)
|
||||
end
|
||||
if Search_term then
|
||||
if chord == 'escape' then
|
||||
Search_term = nil
|
||||
Search_text = nil
|
||||
Cursor1 = Search_backup.cursor
|
||||
Screen_top1 = Search_backup.screen_top
|
||||
Search_backup = nil
|
||||
Text.redraw_all() -- if we're scrolling, reclaim all fragments to avoid memory leaks
|
||||
elseif chord == 'return' then
|
||||
Search_term = nil
|
||||
Search_text = nil
|
||||
Search_backup = nil
|
||||
elseif chord == 'backspace' then
|
||||
local len = utf8.len(Search_term)
|
||||
local byte_offset = Text.offset(Search_term, len)
|
||||
Search_term = string.sub(Search_term, 1, byte_offset-1)
|
||||
Search_text = nil
|
||||
elseif chord == 'down' then
|
||||
Cursor1.pos = Cursor1.pos+1
|
||||
Text.search_next()
|
||||
elseif chord == 'up' then
|
||||
Text.search_previous()
|
||||
end
|
||||
return
|
||||
elseif chord == 'C-f' then
|
||||
Search_term = ''
|
||||
Search_backup = {cursor={line=Cursor1.line, pos=Cursor1.pos}, screen_top={line=Screen_top1.line, pos=Screen_top1.pos}}
|
||||
assert(Search_text == nil)
|
||||
elseif chord == 'C-=' then
|
||||
initialize_font_settings(Font_height+2)
|
||||
Text.redraw_all()
|
||||
elseif chord == 'C--' then
|
||||
initialize_font_settings(Font_height-2)
|
||||
Text.redraw_all()
|
||||
elseif chord == 'C-0' then
|
||||
initialize_font_settings(20)
|
||||
Text.redraw_all()
|
||||
elseif chord == 'C-z' then
|
||||
for _,line in ipairs(Lines) do line.y = nil end -- just in case we scroll
|
||||
local event = undo_event()
|
||||
if event then
|
||||
local src = event.before
|
||||
Screen_top1 = deepcopy(src.screen_top)
|
||||
Cursor1 = deepcopy(src.cursor)
|
||||
Selection1 = deepcopy(src.selection)
|
||||
patch(Lines, event.after, event.before)
|
||||
Text.redraw_all() -- if we're scrolling, reclaim all fragments to avoid memory leaks
|
||||
schedule_save()
|
||||
end
|
||||
elseif chord == 'C-y' then
|
||||
for _,line in ipairs(Lines) do line.y = nil end -- just in case we scroll
|
||||
local event = redo_event()
|
||||
if event then
|
||||
local src = event.after
|
||||
Screen_top1 = deepcopy(src.screen_top)
|
||||
Cursor1 = deepcopy(src.cursor)
|
||||
Selection1 = deepcopy(src.selection)
|
||||
patch(Lines, event.before, event.after)
|
||||
Text.redraw_all() -- if we're scrolling, reclaim all fragments to avoid memory leaks
|
||||
schedule_save()
|
||||
end
|
||||
-- clipboard
|
||||
elseif chord == 'C-c' then
|
||||
for _,line in ipairs(Lines) do line.y = nil end -- just in case we scroll
|
||||
local s = Text.selection()
|
||||
if s then
|
||||
App.setClipboardText(s)
|
||||
end
|
||||
elseif chord == 'C-x' then
|
||||
for _,line in ipairs(Lines) do line.y = nil end -- just in case we scroll
|
||||
local s = Text.cut_selection(Margin_left, App.screen.width-Margin_right)
|
||||
if s then
|
||||
App.setClipboardText(s)
|
||||
end
|
||||
schedule_save()
|
||||
elseif chord == 'C-v' then
|
||||
for _,line in ipairs(Lines) do line.y = nil end -- just in case we scroll
|
||||
-- We don't have a good sense of when to scroll, so we'll be conservative
|
||||
-- and sometimes scroll when we didn't quite need to.
|
||||
local before_line = Cursor1.line
|
||||
local before = snapshot(before_line)
|
||||
local clipboard_data = App.getClipboardText()
|
||||
for _,code in utf8.codes(clipboard_data) do
|
||||
local c = utf8.char(code)
|
||||
if c == '\n' then
|
||||
Text.insert_return()
|
||||
else
|
||||
Text.insert_at_cursor(c)
|
||||
end
|
||||
end
|
||||
if Text.cursor_past_screen_bottom() then
|
||||
Text.snap_cursor_to_bottom_of_screen(Margin_left, App.screen.height-Margin_right)
|
||||
end
|
||||
schedule_save()
|
||||
record_undo_event({before=before, after=snapshot(before_line, Cursor1.line)})
|
||||
-- dispatch to drawing or text
|
||||
elseif App.mouse_down(1) or chord:sub(1,2) == 'C-' then
|
||||
-- DON'T reset line.y here
|
||||
local drawing_index, drawing = Drawing.current_drawing()
|
||||
if drawing_index then
|
||||
local before = snapshot(drawing_index)
|
||||
Drawing.keychord_pressed(chord)
|
||||
record_undo_event({before=before, after=snapshot(drawing_index)})
|
||||
schedule_save()
|
||||
end
|
||||
elseif chord == 'escape' and not App.mouse_down(1) then
|
||||
for _,line in ipairs(Lines) do
|
||||
if line.mode == 'drawing' then
|
||||
line.show_help = false
|
||||
end
|
||||
end
|
||||
elseif Current_drawing_mode == 'name' then
|
||||
if chord == 'return' then
|
||||
Current_drawing_mode = Previous_drawing_mode
|
||||
Previous_drawing_mode = nil
|
||||
else
|
||||
local before = snapshot(Lines.current_drawing_index)
|
||||
local drawing = Lines.current_drawing
|
||||
local p = drawing.points[drawing.pending.target_point]
|
||||
if chord == 'escape' then
|
||||
p.name = nil
|
||||
record_undo_event({before=before, after=snapshot(Lines.current_drawing_index)})
|
||||
elseif chord == 'backspace' then
|
||||
local len = utf8.len(p.name)
|
||||
local byte_offset = Text.offset(p.name, len-1)
|
||||
if len == 1 then byte_offset = 0 end
|
||||
p.name = string.sub(p.name, 1, byte_offset)
|
||||
record_undo_event({before=before, after=snapshot(Lines.current_drawing_index)})
|
||||
end
|
||||
end
|
||||
schedule_save()
|
||||
else
|
||||
for _,line in ipairs(Lines) do line.y = nil end -- just in case we scroll
|
||||
Text.keychord_pressed(chord)
|
||||
end
|
||||
return edit.keychord_pressed(chord, key)
|
||||
end
|
||||
|
||||
function App.keyreleased(key, scancode)
|
||||
return edit.key_released(key, scancode)
|
||||
end
|
||||
|
|
Loading…
Reference in New Issue