diff options
Diffstat (limited to 'edit.lua')
| -rw-r--r-- | edit.lua | 258 |
1 files changed, 47 insertions, 211 deletions
diff --git a/edit.lua b/edit.lua index cfc1478..e4325f4 100644 --- a/edit.lua +++ b/edit.lua @@ -1,51 +1,18 @@ -- some constants people might like to tweak Text_color = {r=0, g=0, b=0} Cursor_color = {r=1, g=0, b=0} -Stroke_color = {r=0, g=0, b=0} -Current_stroke_color = {r=0.7, g=0.7, b=0.7} -- in process of being drawn -Current_name_background_color = {r=1, g=0, b=0, a=0.1} -- name currently being edited -Focus_stroke_color = {r=1, g=0, b=0} -- what mouse is hovering over Highlight_color = {r=0.7, g=0.7, b=0.9} -- selected text -Icon_color = {r=0.7, g=0.7, b=0.7} -- color of current mode icon in drawings -Help_color = {r=0, g=0.5, b=0} -Help_background_color = {r=0, g=0.5, b=0, a=0.1} Margin_top = 15 Margin_left = 25 Margin_right = 25 -Drawing_padding_top = 10 -Drawing_padding_bottom = 10 -Drawing_padding_height = Drawing_padding_top + Drawing_padding_bottom - -Same_point_distance = 4 -- pixel distance at which two points are considered the same - edit = {} -- run in both tests and a real run function edit.initialize_state(top, left, right, font_height, line_height) -- currently always draws to bottom of screen local result = { - -- a line is either text or a drawing - -- a text is a table with: - -- mode = 'text', - -- string data, - -- 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=''}}, -- array of lines + lines = {{data=''}}, -- array of strings -- Lines can be too long to fit on screen, in which case they _wrap_ into -- multiple _screen lines_. @@ -80,9 +47,6 @@ function edit.initialize_state(top, left, right, font_height, line_height) -- c cursor_x = 0, cursor_y = 0, - current_drawing_mode = 'line', -- one of the available shape modes - previous_drawing_mode = nil, -- extra state for some ephemeral modes like moving/deleting/naming points - font_height = font_height, line_height = line_height, @@ -110,11 +74,9 @@ function edit.check_locs(State) -- throw away all cursor state entirely if edit.invalid1(State, State.screen_top1) or edit.invalid_cursor1(State) - or not edit.cursor_on_text(State) or not Text.le1(State.screen_top1, State.cursor1) then State.screen_top1 = {line=1, pos=1} State.cursor1 = {line=1, pos=1} - edit.put_cursor_on_next_text_line(State) end end @@ -135,27 +97,8 @@ function edit.invalid_cursor1(State) return cursor1.pos > #State.lines[cursor1.line].data + 1 end -function edit.cursor_on_text(State) - return State.cursor1.line <= #State.lines - and State.lines[State.cursor1.line].mode == 'text' -end - -function edit.put_cursor_on_next_text_line(State) - while true do - if State.cursor1.line >= #State.lines then - break - end - if State.lines[State.cursor1.line].mode == 'text' then - break - end - State.cursor1.line = State.cursor1.line+1 - State.cursor1.pos = 1 - end -end - -- return y drawn until function edit.draw(State) - State.button_handlers = {} App.color(Text_color) assert(#State.lines == #State.line_cache, ('line_cache is out of date; %d elements when it should be %d'):format(#State.line_cache, #State.lines)) assert(Text.le1(State.screen_top1, State.cursor1), ('screen_top (line=%d,pos=%d) is below cursor (line=%d,pos=%d)'):format(State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos)) @@ -169,37 +112,13 @@ function edit.draw(State) --? print('draw:', y, line_index, line) if y + State.line_height > App.screen.height then break end screen_bottom1.line = line_index - if line.mode == 'text' then ---? print('text.draw', y, line_index) - local startpos = 1 - if line_index == State.screen_top1.line then - startpos = State.screen_top1.pos - end - if line.data == '' then - -- button to insert new drawing - button(State, 'draw', {x=State.left-Margin_left+4, y=y+4, w=12,h=12, bg={r=1,g=1,b=0}, - icon = icon.insert_drawing, - onpress1 = function() - Drawing.before = snapshot(State, line_index-1, line_index) - table.insert(State.lines, line_index, {mode='drawing', y=y, h=256/2, points={}, shapes={}, pending={}}) - table.insert(State.line_cache, line_index, {}) - if State.cursor1.line >= line_index then - State.cursor1.line = State.cursor1.line+1 - end - schedule_save(State) - record_undo_event(State, {before=Drawing.before, after=snapshot(State, line_index-1, line_index+1)}) - end, - }) - end - y, screen_bottom1.pos = Text.draw(State, line_index, y, startpos) ---? print('=> y', y) - elseif line.mode == 'drawing' then - y = y+Drawing_padding_top - Drawing.draw(State, line_index, y) - y = y + Drawing.pixels(line.h, State.width) + Drawing_padding_bottom - else - assert(false, ('unknown line mode %s'):format(line.mode)) +--? print('text.draw', y, line_index) + local startpos = 1 + if line_index == State.screen_top1.line then + startpos = State.screen_top1.pos end + y, screen_bottom1.pos = Text.draw(State, line_index, y, startpos) +--? print('=> y', y) end State.screen_bottom1 = screen_bottom1 if State.search_term then @@ -209,7 +128,6 @@ function edit.draw(State) end function edit.update(State, dt) - Drawing.update(State, dt) if State.next_save and State.next_save < Current_time then save_to_disk(State) State.next_save = nil @@ -235,11 +153,6 @@ function edit.mouse_press(State, x,y, mouse_button) if State.search_term then return end State.mouse_down = mouse_button --? print_and_log(('edit.mouse_press: cursor at %d,%d'):format(State.cursor1.line, State.cursor1.pos)) - if mouse_press_consumed_by_any_button_handler(State, x,y, mouse_button) then - -- press on a button and it returned 'true' to short-circuit - return - end - if y < State.top then State.old_cursor1 = State.cursor1 State.old_selection1 = State.selection1 @@ -252,36 +165,25 @@ function edit.mouse_press(State, x,y, mouse_button) end for line_index,line in ipairs(State.lines) do - if line.mode == 'text' then - if Text.in_line(State, line_index, x,y) 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. mouse_release should never look at shift state ---? print_and_log(('edit.mouse_press: in line %d'):format(line_index)) - State.old_cursor1 = State.cursor1 - State.old_selection1 = State.selection1 - State.mousepress_shift = App.shift_down() - State.selection1 = { - line=line_index, - pos=Text.to_pos_on_line(State, line_index, x, y), - } - return - end - elseif line.mode == 'drawing' then - local line_cache = State.line_cache[line_index] - if Drawing.in_drawing(line, line_cache, x, y, State.left,State.right) then - State.lines.current_drawing_index = line_index - State.lines.current_drawing = line - Drawing.before = snapshot(State, line_index) - Drawing.mouse_press(State, line_index, x,y, mouse_button) - return - end + if Text.in_line(State, line_index, x,y) 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. mouse_release should never look at shift state +--? print_and_log(('edit.mouse_press: in line %d'):format(line_index)) + State.old_cursor1 = State.cursor1 + State.old_selection1 = State.selection1 + State.mousepress_shift = App.shift_down() + State.selection1 = { + line=line_index, + pos=Text.to_pos_on_line(State, line_index, x, y), + } + return end end @@ -297,43 +199,30 @@ end function edit.mouse_release(State, x,y, mouse_button) if State.search_term then return end ---? print_and_log(('edit.mouse_release: cursor at %d,%d'):format(State.cursor1.line, State.cursor1.pos)) +--? print_and_log(('edit.mouse_release(%d,%d): cursor at %d,%d'):format(x,y, State.cursor1.line, State.cursor1.pos)) State.mouse_down = nil - if State.lines.current_drawing then - Drawing.mouse_release(State, x,y, mouse_button) - schedule_save(State) - if Drawing.before then - record_undo_event(State, {before=Drawing.before, after=snapshot(State, State.lines.current_drawing_index)}) - Drawing.before = nil - end - else ---? print_and_log('edit.mouse_release: no current drawing') - if y < State.top then - State.cursor1 = {line=State.screen_top1.line, pos=State.screen_top1.pos} + if y < State.top then + State.cursor1 = {line=State.screen_top1.line, pos=State.screen_top1.pos} + edit.clean_up_mouse_press(State) + return + end + for line_index,line in ipairs(State.lines) do + if Text.in_line(State, line_index, x,y) then +--? print_and_log(('edit.mouse_release: in line %d'):format(line_index)) + State.cursor1 = { + line=line_index, + pos=Text.to_pos_on_line(State, line_index, x, y), + } +--? print_and_log(('edit.mouse_release: cursor now %d,%d'):format(State.cursor1.line, State.cursor1.pos)) edit.clean_up_mouse_press(State) return end - - for line_index,line in ipairs(State.lines) do - if line.mode == 'text' then - if Text.in_line(State, line_index, x,y) then ---? print_and_log(('edit.mouse_release: in line %d'):format(line_index)) - State.cursor1 = { - line=line_index, - pos=Text.to_pos_on_line(State, line_index, x, y), - } ---? print_and_log(('edit.mouse_release: cursor now %d,%d'):format(State.cursor1.line, State.cursor1.pos)) - edit.clean_up_mouse_press(State) - return - end - end - end - - -- still here? mouse release is below all screen lines - State.cursor1.line, State.cursor1.pos = State.screen_bottom1.line, Text.pos_at_end_of_screen_line(State, State.screen_bottom1) - edit.clean_up_mouse_press(State) ---? print_and_log(('edit.mouse_release: finally selection %s,%s cursor %d,%d'):format(tostring(State.selection1.line), tostring(State.selection1.pos), State.cursor1.line, State.cursor1.pos)) end + + -- still here? mouse release is below all screen lines + State.cursor1.line, State.cursor1.pos = State.screen_bottom1.line, Text.pos_at_end_of_screen_line(State, State.screen_bottom1) + edit.clean_up_mouse_press(State) +--? print_and_log(('edit.mouse_release: finally selection %s,%s cursor %d,%d'):format(tostring(State.selection1.line), tostring(State.selection1.pos), State.cursor1.line, State.cursor1.pos)) end function edit.clean_up_mouse_press(State) @@ -353,13 +242,11 @@ end function edit.mouse_wheel_move(State, dx,dy) if dy > 0 then State.cursor1 = {line=State.screen_top1.line, pos=State.screen_top1.pos} - edit.put_cursor_on_next_text_line(State) for i=1,math.floor(dy) do Text.up(State) end elseif dy < 0 then State.cursor1 = {line=State.screen_bottom1.line, pos=State.screen_bottom1.pos} - edit.put_cursor_on_next_text_line(State) for i=1,math.floor(-dy) do Text.down(State) end @@ -371,24 +258,14 @@ function edit.text_input(State, t) if State.search_term then State.search_term = State.search_term..t Text.search_next(State) - elseif State.lines.current_drawing and State.current_drawing_mode == 'name' then - local before = snapshot(State, State.lines.current_drawing_index) - local drawing = State.lines.current_drawing - local p = drawing.points[drawing.pending.target_point] - p.name = p.name..t - record_undo_event(State, {before=before, after=snapshot(State, State.lines.current_drawing_index)}) else - local drawing_index, drawing = Drawing.current_drawing(State) - if drawing_index == nil then - Text.text_input(State, t) - end + Text.text_input(State, t) end schedule_save(State) end function edit.keychord_press(State, chord, key) if State.selection1.line and - not State.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 @@ -445,8 +322,6 @@ function edit.keychord_press(State, chord, key) State.selection1 = deepcopy(src.selection) patch(State.lines, event.after, event.before) patch_placeholders(State.line_cache, event.after, event.before) - -- invalidate various cached bits of lines - State.lines.current_drawing = nil -- if we're scrolling, reclaim all fragments to avoid memory leaks Text.redraw_all(State) schedule_save(State) @@ -459,8 +334,6 @@ function edit.keychord_press(State, chord, key) State.cursor1 = deepcopy(src.cursor) State.selection1 = deepcopy(src.selection) patch(State.lines, event.before, event.after) - -- invalidate various cached bits of lines - State.lines.current_drawing = nil -- if we're scrolling, reclaim all fragments to avoid memory leaks Text.redraw_all(State) schedule_save(State) @@ -499,44 +372,7 @@ function edit.keychord_press(State, chord, key) end schedule_save(State) record_undo_event(State, {before=before, after=snapshot(State, before_line, State.cursor1.line)}) - -- dispatch to drawing or text - elseif App.mouse_down(1) or chord:sub(1,2) == 'C-' then - -- DON'T reset line_cache.starty here - local drawing_index, drawing = Drawing.current_drawing(State) - if drawing_index then - local before = snapshot(State, drawing_index) - Drawing.keychord_press(State, chord) - record_undo_event(State, {before=before, after=snapshot(State, drawing_index)}) - schedule_save(State) - end - elseif chord == 'escape' and not App.mouse_down(1) then - for _,line in ipairs(State.lines) do - if line.mode == 'drawing' then - line.show_help = false - end - end - elseif State.lines.current_drawing and State.current_drawing_mode == 'name' then - if chord == 'return' then - State.current_drawing_mode = State.previous_drawing_mode - State.previous_drawing_mode = nil - else - local before = snapshot(State, State.lines.current_drawing_index) - local drawing = State.lines.current_drawing - local p = drawing.points[drawing.pending.target_point] - if chord == 'escape' then - p.name = nil - record_undo_event(State, {before=before, after=snapshot(State, State.lines.current_drawing_index)}) - elseif chord == 'backspace' then - local len = utf8.len(p.name) - if len > 0 then - 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(State, {before=before, after=snapshot(State, State.lines.current_drawing_index)}) - end - end - end - schedule_save(State) + -- dispatch to text else for _,line_cache in ipairs(State.line_cache) do line_cache.starty = nil end -- just in case we scroll Text.keychord_press(State, chord) |