akkartik/snap.love - Change ZQMQVMFWZIGWBRCB455IKHPTAOUYPLYCSC44NBPPET557RGVRX3AC

scrolling editor pans surface!

I'm starting to understand this mechanism. I keep polishing pensieve.love in parallel with these changes.

Created by Kartik K. Agaram on December 24, 2022

ZQMQVMFWZIGWBRCB455IKHPTAOUYPLYCSC44NBPPET557RGVRX3AC

Dependencies

In channels

main

Change contents

Replacement in head at line 1 [3.10815]
B:BD[3.10815] → [2.12:15]
```
366
```
[3.10815]
```
381
```

File addition: 0381-manifest (----------)

[4.2]

{"vy":8,"schema1_of_y":366,"on.keychord_press":376,"to_text":180,"initialize_editor":338,"on.update":368,"on.initialize":350,"y_of_schema1":364,"A":309,"box_height":345,"compute_layout":354,"Page":381,"B":379,"on.mouse_release":367,"on":1,"scale":7,"on.mouse_press":179,"on.text_input":177,"Surface":196,"on.code_change":306,"parent":380,"line_height":365,"Cursor_node":172,"vx":5,"update_editor_box":377,"Viewport":303,"on.draw":346,"font":353}

File addition: 0381-Page (----------)

[4.2]

Page = {
    -- page
	type='cols', x=0, y=0,
    width=800, data={
      -- editor covering left side
      {
		type='text',
        name='editor',
        doc='prose goes here, on the left half of the window',
        margin=Margin_left,
        data={
			"Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.",
			'1',
			'2',
			'3',
			'mno',
			'Acb',
			'g',
			'hij',
			'klm',
			'nop',
		},
        width=400, bg={r=1,g=1,b=0}
      },
      -- a table on the right
      { type='rows', name='searches', margin=50, data={
        { type='text', data={''},},
        { type='cols', data={
          { type='text', data={'search:'},},
          { type='text', name='search', bg={r=0.8,g=0.8,b=0.8}, data={''}, width=90,},
        }},
		{ type='text', data={'table:'},},
        { type='cols', bg={r=0.8,g=0.8,b=0.8}, data={
            { type='rows', width=90, data={
              {type='text', data={'abc'},},
              {type='text', data={'abc'},},
            }},
            { type='rows', width=90, data={
              {type='text', data={'def'},},
              {type='text', data={'def'},},
            }},
        }},
      }},
    },
}

File addition: 0380-manifest (----------)

[4.2]

{"compute_layout":354,"Page":380,"schema1_of_y":366,"parent":379,"Cursor_node":172,"on":1,"on.initialize":350,"y_of_schema1":364,"A":309,"on.draw":346,"font":353,"vx":5,"B":379,"Viewport":303,"initialize_editor":338,"line_height":365,"vy":8,"on.code_change":306,"Surface":196,"on.text_input":177,"to_text":180,"on.mouse_press":179,"scale":7,"on.mouse_release":367,"update_editor_box":377,"on.update":368,"box_height":345,"on.keychord_press":376}

File addition: 0380-Page (----------)

[4.2]

Page = {
    -- page
	type='rows', x=0, y=0,
    width=800, data={
      -- editor covering left side
      {
		type='text',
        name='editor',
        doc='prose goes here, on the left half of the window',
        margin=Margin_left,
        data={
			"Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.",
			'1',
			'2',
			'3',
			'mno',
			'Acb',
			'g',
			'hij',
			'klm',
			'nop',
		},
        width=400, bg={r=1,g=1,b=0}
      },
      -- a table on the right
      { type='rows', name='searches', margin=50, data={
        { type='text', data={''},},
        { type='cols', data={
          { type='text', data={'search:'},},
          { type='text', name='search', bg={r=0.8,g=0.8,b=0.8}, data={''}, width=90,},
        }},
		{ type='text', data={'table:'},},
        { type='cols', bg={r=0.8,g=0.8,b=0.8}, data={
            { type='rows', width=90, data={
              {type='text', data={'abc'},},
              {type='text', data={'abc'},},
            }},
            { type='rows', width=90, data={
              {type='text', data={'def'},},
              {type='text', data={'def'},},
            }},
        }},
      }},
    },
}

File addition: 0379-manifest (----------)

[4.2]

{"compute_layout":354,"Page":344,"schema1_of_y":366,"parent":378,"Cursor_node":172,"on":1,"on.initialize":350,"y_of_schema1":364,"A":309,"on.draw":346,"font":353,"vx":5,"B":379,"Viewport":303,"initialize_editor":338,"line_height":365,"vy":8,"on.code_change":306,"Surface":196,"on.text_input":177,"to_text":180,"on.mouse_press":179,"scale":7,"on.mouse_release":367,"update_editor_box":377,"on.update":368,"box_height":345,"on.keychord_press":376}

File addition: 0379-B (----------)

[4.2]

B = function(preserve_screen_top_of_cursor_node)
	-- recompute various aspects based on the current viewport settings
	love.graphics.setFont(love.graphics.newFont(scale(20)))  -- editor objects implicitly depend on current font so update it
	for _,obj in ipairs(Surface) do
		if obj.type == 'line' then
			obj.zdata = {}
			for i=1,#obj.data,2 do
				table.insert(obj.zdata, vx(obj.data[i]))
				table.insert(obj.zdata, vy(obj.data[i+1]))
			end
		elseif obj.type == 'bezier' then
			zdata = {}
			for i=1,#obj.data,2 do
				table.insert(zdata, vx(obj.data[i]))
				table.insert(zdata, vy(obj.data[i+1]))
			end
			obj.zdata = love.math.newBezierCurve(zdata):render()
		elseif obj.type == 'text' then
			if obj.w then
				update_editor_box(obj, preserve_screen_top_of_cursor_node)
			else
				obj.text = love.graphics.newText(love.graphics.getFont(), obj.data)
			end
		end
	end
end

File addition: 0378-manifest (----------)

[4.2]

{"compute_layout":354,"Page":344,"schema1_of_y":366,"parent":377,"Cursor_node":172,"on":1,"on.initialize":350,"y_of_schema1":364,"A":309,"on.draw":346,"font":353,"vx":5,"B":378,"Viewport":303,"initialize_editor":338,"line_height":365,"vy":8,"on.code_change":306,"Surface":196,"on.text_input":177,"to_text":180,"on.mouse_press":179,"scale":7,"on.mouse_release":367,"update_editor_box":377,"on.update":368,"box_height":345,"on.keychord_press":376}

File addition: 0378-B (----------)

[4.2]

B = function(preserve_screen_top_of_cursor_node)
	-- recompute various aspects based on the current viewport settings
	love.graphics.setFont(love.graphics.newFont(scale(20)))  -- editor objects implicitly depend on current font so update it
	for _,obj in ipairs(Surface) do
		if obj.type == 'line' then
			obj.zdata = {}
			for i=1,#obj.data,2 do
				table.insert(obj.zdata, vx(obj.data[i]))
				table.insert(obj.zdata, vy(obj.data[i+1]))
			end
		elseif obj.type == 'bezier' then
			zdata = {}
			for i=1,#obj.data,2 do
				table.insert(zdata, vx(obj.data[i]))
				table.insert(zdata, vy(obj.data[i+1]))
			end
			obj.zdata = love.math.newBezierCurve(zdata):render()
		elseif obj.type == 'text' then
			if obj.w then
				update_editor_box(obj, preserve_screen_top_of_cursor_node)
			else
				obj.text = love.graphics.newText(love.graphics.getFont(), obj.data)
			end
		end
	end
end

File addition: 0377-update_editor_box (----------)

[4.2]

update_editor_box = function(node, preserve_screen_top_of_cursor_node)
	if node.editor == nil then return end
	if node.y > Viewport.y then
		if not preserve_screen_top_of_cursor_node or node ~= Cursor_node then
			node.editor.screen_top1.line = 1
			node.editor.screen_top1.pos = 1
		end
		node.editor.top = vy(node.y)
	else
		node.editor.screen_top1, node.editor.top = schema1_of_y(node.editor, Viewport.y - node.y)
	end
	print('top', node.editor.top)
	print('screen_top1', node.editor.screen_top1.line, node.editor.screen_top1.pos)
	node.editor.left = math.floor(vx(node.x))
	node.editor.right = math.ceil(vx(node.x+node.w))
	edit.update_font_settings(node.editor, scale(20))
	Text.redraw_all(node.editor)
end

File addition: 0377-manifest (----------)

[4.2]

{"compute_layout":354,"Page":344,"schema1_of_y":366,"parent":376,"Cursor_node":172,"on":1,"on.initialize":350,"y_of_schema1":364,"A":309,"on.draw":346,"font":353,"vx":5,"B":369,"Viewport":303,"initialize_editor":338,"line_height":365,"vy":8,"on.code_change":306,"Surface":196,"on.text_input":177,"to_text":180,"on.mouse_press":179,"scale":7,"on.mouse_release":367,"update_editor_box":377,"on.update":368,"box_height":345,"on.keychord_press":376}

File addition: 0376-on.keychord_press (----------)

[4.2]

on.keychord_press = function(chord, key)
	if chord == 'C-=' then
		-- zoom in
		Viewport.zoom = Viewport.zoom+0.1
		B()
	elseif chord == 'C--' then
		-- zoom out
		Viewport.zoom = Viewport.zoom-0.1
		B()
	elseif chord == 'C-0' then
		-- reset zoom
		Viewport.zoom = 1.0
		B()
	elseif Cursor_node then
		local old_top = {line=Cursor_node.editor.screen_top1.line, pos=Cursor_node.editor.screen_top1.pos}
		edit.keychord_press(Cursor_node.editor, chord, key)
		if not eq(Cursor_node.editor.screen_top1, old_top) then
			Viewport.y = Cursor_node.y + y_of_schema1(Cursor_node.editor, Cursor_node.editor.screen_top1)
		end
		B(--[[skip_cursor_node]] true)
	end
end

File addition: 0376-manifest (----------)

[4.2]

{"compute_layout":354,"Page":344,"schema1_of_y":366,"parent":375,"Cursor_node":172,"on":1,"on.initialize":350,"y_of_schema1":364,"A":309,"on.draw":346,"font":353,"vx":5,"B":369,"Viewport":303,"initialize_editor":338,"line_height":365,"vy":8,"on.code_change":306,"Surface":196,"on.text_input":177,"to_text":180,"on.mouse_press":179,"scale":7,"on.mouse_release":367,"update_editor_box":372,"on.update":368,"box_height":345,"on.keychord_press":376}

File addition: 0375-on.keychord_press (----------)

[4.2]

on.keychord_press = function(chord, key)
	if chord == 'C-=' then
		-- zoom in
		Viewport.zoom = Viewport.zoom+0.1
		B()
	elseif chord == 'C--' then
		-- zoom out
		Viewport.zoom = Viewport.zoom-0.1
		B()
	elseif chord == 'C-0' then
		-- reset zoom
		Viewport.zoom = 1.0
		B()
	elseif Cursor_node then
		local old_top = {line=Cursor_node.editor.screen_top1.line, pos=Cursor_node.editor.screen_top1.pos}
		edit.keychord_press(Cursor_node.editor, chord, key)
		if not eq(Cursor_node.editor.screen_top1, old_top) then
			print('before', Viewport.y)
			Viewport.y = Cursor_node.y + y_of_schema1(Cursor_node.editor, Cursor_node.editor.screen_top1)
			print('after', Viewport.y)
		end
		B(--[[skip_cursor_node]] true)
	end
end

File addition: 0375-manifest (----------)

[4.2]

{"compute_layout":354,"Page":344,"schema1_of_y":366,"parent":374,"Cursor_node":172,"on":1,"on.initialize":350,"y_of_schema1":364,"A":309,"on.draw":346,"font":353,"vx":5,"B":369,"Viewport":303,"initialize_editor":338,"line_height":365,"vy":8,"on.code_change":306,"Surface":196,"on.text_input":177,"to_text":180,"on.mouse_press":179,"scale":7,"on.mouse_release":367,"update_editor_box":372,"on.update":368,"box_height":345,"on.keychord_press":375}

File addition: 0374-on.keychord_press (----------)

[4.2]

on.keychord_press = function(chord, key)
	if chord == 'C-=' then
		-- zoom in
		Viewport.zoom = Viewport.zoom+0.1
		B()
	elseif chord == 'C--' then
		-- zoom out
		Viewport.zoom = Viewport.zoom-0.1
		B()
	elseif chord == 'C-0' then
		-- reset zoom
		Viewport.zoom = 1.0
		B()
	elseif Cursor_node then
		local old_top = {line=Cursor_node.editor.screen_top1.line, pos=Cursor_node.editor.screen_top1.pos}
		edit.keychord_press(Cursor_node.editor, chord, key)
		if not eq(Cursor_node.editor.screen_top1, old_top) then
			Viewport.y = Cursor_node.y + y_of_schema1(Cursor_node.editor, Cursor_node.editor.screen_top1)
		end
		B(--[[skip_cursor_node]] true)
	end
end

File addition: 0374-manifest (----------)

[4.2]

{"compute_layout":354,"Page":344,"schema1_of_y":366,"parent":373,"Cursor_node":172,"on":1,"on.initialize":350,"y_of_schema1":364,"A":309,"on.draw":346,"font":353,"vx":5,"B":369,"Viewport":303,"initialize_editor":338,"line_height":365,"vy":8,"on.code_change":306,"Surface":196,"on.text_input":177,"to_text":180,"on.mouse_press":179,"scale":7,"on.mouse_release":367,"update_editor_box":372,"on.update":368,"box_height":345,"on.keychord_press":374}

File addition: 0373-on.keychord_press (----------)

[4.2]

on.keychord_press = function(chord, key)
	if chord == 'C-=' then
		-- zoom in
		Viewport.zoom = Viewport.zoom+0.1
		B()
	elseif chord == 'C--' then
		-- zoom out
		Viewport.zoom = Viewport.zoom-0.1
		B()
	elseif chord == 'C-0' then
		-- reset zoom
		Viewport.zoom = 1.0
		B()
	elseif Cursor_node then
		local old_top = {line=Cursor_node.editor.screen_top1.line, pos=Cursor_node.editor.screen_top1.pos}
		edit.keychord_press(Cursor_node.editor, chord, key)
		if not eq(Cursor_node.editor.screen_top1, old_top) then
			Viewport.y = Cursor_node.y + y_of_schema1(Cursor_node.editor, Cursor_node.screen_top1)
		end
		B(--[[skip_cursor_node]] true)
	end
end

File addition: 0373-manifest (----------)

[4.2]

{"compute_layout":354,"Page":344,"schema1_of_y":366,"parent":372,"Cursor_node":172,"on":1,"on.initialize":350,"y_of_schema1":364,"A":309,"on.draw":346,"font":353,"vx":5,"B":369,"Viewport":303,"initialize_editor":338,"line_height":365,"vy":8,"on.code_change":306,"Surface":196,"on.text_input":177,"to_text":180,"on.mouse_press":179,"scale":7,"on.mouse_release":367,"update_editor_box":372,"on.update":368,"box_height":345,"on.keychord_press":373}

File addition: 0372-update_editor_box (----------)

[4.2]

update_editor_box = function(node, skip_cursor_node)
	if node.editor == nil then return end
	if skip_cursor_node and node == Cursor_node then return end
	if node.y > Viewport.y then
		node.editor.screen_top1.line = 1
		node.editor.screen_top1.pos = 1
		node.editor.top = vy(node.y)
	else
		node.editor.screen_top1, node.editor.top = schema1_of_y(node.editor, Viewport.y - node.y)
	end
	print('top', node.editor.top)
	print('screen_top1', node.editor.screen_top1.line, node.editor.screen_top1.pos)
	node.editor.left = math.floor(vx(node.x))
	node.editor.right = math.ceil(vx(node.x+node.w))
	edit.update_font_settings(node.editor, scale(20))
	Text.redraw_all(node.editor)
end

File addition: 0372-manifest (----------)

[4.2]

{"compute_layout":354,"Page":344,"schema1_of_y":366,"parent":371,"Cursor_node":172,"on":1,"on.initialize":350,"y_of_schema1":364,"A":309,"on.draw":346,"font":353,"vx":5,"B":369,"Viewport":303,"initialize_editor":338,"line_height":365,"vy":8,"on.code_change":306,"Surface":196,"on.text_input":177,"to_text":180,"on.mouse_press":179,"scale":7,"on.mouse_release":367,"update_editor_box":372,"on.update":368,"box_height":345,"on.keychord_press":311}

File addition: 0371-update_editor_box (----------)

[4.2]

update_editor_box = function(node, skip_cursor_node)
	if node.editor == nil then return end
	if skip_cursor_node and node == Cursor_node then return end
	if node.y > Viewport.y then
		node.editor.screen_top1.line = 1
		node.editor.screen_top1.pos = 1
		node.editor.top = vy(node.y)
	else
		node.editor.screen_top1, node.editor.top = schema1_of_y(node.editor, Viewport.y - node.y)
	end
	print('top', node.editor.top)
	print('screen_top1', node.editor.screen_top1.line, node.editor.screen_top1.pos)
	node.editor.left = math.floor(vx(node.x))
	node.editor.right = math.ceil(vx(node.x+obj.w))
	edit.update_font_settings(node.editor, scale(20))
	Text.redraw_all(node.editor)
end

File addition: 0371-manifest (----------)

[4.2]

{"compute_layout":354,"Page":344,"schema1_of_y":366,"parent":370,"Cursor_node":172,"on":1,"on.initialize":350,"y_of_schema1":364,"A":309,"on.draw":346,"font":353,"vx":5,"B":369,"Viewport":303,"initialize_editor":338,"line_height":365,"vy":8,"on.code_change":306,"Surface":196,"on.text_input":177,"to_text":180,"on.mouse_press":179,"scale":7,"on.mouse_release":367,"update_editor_box":371,"on.update":368,"box_height":345,"on.keychord_press":311}

File addition: 0370-update_editor_box (----------)

[4.2]

update_editor_box = function(obj, skip_cursor_node)
	if obj.editor == nil then return end
	if skip_cursor_node and obj == Cursor_node then return end
	if obj.y > Viewport.y then
		obj.editor.screen_top1.line = 1
		obj.editor.screen_top1.pos = 1
		obj.editor.top = vy(obj.y)
	else
		obj.editor.screen_top1, obj.editor.top = schema1_of_y(obj.editor, Viewport.y - obj.y)
	end
	print('top', obj.editor.top)
	print('screen_top1', obj.editor.screen_top1.line, obj.editor.screen_top1.pos)
	obj.editor.left = math.floor(vx(obj.x))
	obj.editor.right = math.ceil(vx(obj.x+obj.w))
	edit.update_font_settings(obj.editor, scale(20))
	Text.redraw_all(obj.editor)
end

File addition: 0370-manifest (----------)

[4.2]

{"compute_layout":354,"Page":344,"schema1_of_y":366,"parent":369,"Cursor_node":172,"on":1,"on.initialize":350,"y_of_schema1":364,"A":309,"on.draw":346,"font":353,"vx":5,"B":369,"Viewport":303,"initialize_editor":338,"line_height":365,"vy":8,"on.code_change":306,"Surface":196,"on.text_input":177,"to_text":180,"on.mouse_press":179,"scale":7,"on.mouse_release":367,"update_editor_box":370,"on.update":368,"box_height":345,"on.keychord_press":311}

File addition: 0369-manifest (----------)

[4.2]

{"compute_layout":354,"Page":344,"schema1_of_y":366,"parent":368,"Cursor_node":172,"on":1,"on.initialize":350,"y_of_schema1":364,"A":309,"on.draw":346,"font":353,"vx":5,"B":369,"Viewport":303,"initialize_editor":338,"line_height":365,"vy":8,"on.code_change":306,"Surface":196,"on.text_input":177,"to_text":180,"on.mouse_press":179,"scale":7,"on.mouse_release":367,"update_editor_box":358,"on.update":368,"box_height":345,"on.keychord_press":311}

File addition: 0369-B (----------)

[4.2]

B = function(skip_cursor_node)
	-- recompute various aspects based on the current viewport settings
	love.graphics.setFont(love.graphics.newFont(scale(20)))  -- editor objects implicitly depend on current font so update it
	for _,obj in ipairs(Surface) do
		if obj.type == 'line' then
			obj.zdata = {}
			for i=1,#obj.data,2 do
				table.insert(obj.zdata, vx(obj.data[i]))
				table.insert(obj.zdata, vy(obj.data[i+1]))
			end
		elseif obj.type == 'bezier' then
			zdata = {}
			for i=1,#obj.data,2 do
				table.insert(zdata, vx(obj.data[i]))
				table.insert(zdata, vy(obj.data[i+1]))
			end
			obj.zdata = love.math.newBezierCurve(zdata):render()
		elseif obj.type == 'text' then
			if obj.w then
				update_editor_box(obj, skip_cursor_node)
			else
				obj.text = love.graphics.newText(love.graphics.getFont(), obj.data)
			end
		end
	end
end

File addition: 0368-on.update (----------)

[4.2]

on.update = function(dt)
	if Pan then
		Viewport.x = Pan.x - love.mouse.getX()
		Viewport.y = Pan.y - love.mouse.getY()
		B()
	end
end

File addition: 0368-manifest (----------)

[4.2]

{"compute_layout":354,"Page":344,"schema1_of_y":366,"parent":367,"Cursor_node":172,"on":1,"on.initialize":350,"y_of_schema1":364,"A":309,"on.draw":346,"font":353,"vx":5,"B":352,"Viewport":303,"initialize_editor":338,"line_height":365,"vy":8,"on.code_change":306,"Surface":196,"on.text_input":177,"to_text":180,"on.mouse_press":179,"scale":7,"on.mouse_release":367,"update_editor_box":358,"on.update":368,"box_height":345,"on.keychord_press":311}

File addition: 0367-on.mouse_release (----------)

[4.2]

on.mouse_release = function(x,y, mouse_button)
	if Pan then
		Pan = nil
	elseif Cursor_node then
		Cursor_node.show_cursor = true
		edit.mouse_release(Cursor_node.editor, x,y, mouse_button)
	end
end

File addition: 0367-manifest (----------)

[4.2]

{"compute_layout":354,"Page":344,"schema1_of_y":366,"parent":366,"Cursor_node":172,"on":1,"on.initialize":350,"y_of_schema1":364,"A":309,"on.draw":346,"font":353,"vx":5,"B":352,"Viewport":303,"initialize_editor":338,"line_height":365,"vy":8,"on.code_change":306,"Surface":196,"on.text_input":177,"to_text":180,"on.mouse_press":179,"scale":7,"on.mouse_release":367,"update_editor_box":358,"on.update":355,"box_height":345,"on.keychord_press":311}

scrolling editor pans surface!

Dependencies

In channels

Change contents

Replacement in head at line 1 [3.10815]

File addition: 0381-manifest (----------)

File addition: 0381-Page (----------)

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