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module dumb_render
use render
implicit none
integer, parameter::width = 79
integer, parameter::height = 24
type, extends(renderer) :: dumb_renderer
integer::link_index
character(len=1024), dimension(height)::link_urls
integer::first_line
contains
procedure :: initialize => dumb_initialize
procedure :: new_page => dumb_new_page
procedure :: prepare_for_layout => prepare_for_dumb_layout
procedure :: text_width => dumb_text_width
procedure :: text_height => dumb_text_height
procedure :: is_text_visible => dumb_text_visible
procedure :: draw_porportional => dumb_text_draw
procedure :: preformatted_width => dumb_text_width
procedure :: preformatted_height => dumb_text_height
procedure :: is_preformatted_visible => dumb_text_visible
procedure :: draw_preformatted => dumb_text_draw
procedure :: link_width => dumb_link_width
procedure :: link_height => dumb_text_height
procedure :: is_link_visible => dumb_text_visible
procedure :: draw_link => dumb_link_draw
procedure :: request_input => dumb_request_input
procedure :: draw_error => dumb_draw_error
procedure :: report_status => dumb_draw_status
procedure :: request_action => dumb_action
end type dumb_renderer
contains
subroutine dumb_initialize(self)
implicit none
class(dumb_renderer)::self
self%max_width = width
self%y = 0
self%first_line = 1
self%link_index = 0
self%link_urls = " "
end subroutine dumb_initialize
subroutine dumb_new_page(self)
implicit none
class(dumb_renderer)::self
self%y = 0
self%first_line = 1
end subroutine dumb_new_page
subroutine prepare_for_dumb_layout(self)
implicit none
class(dumb_renderer)::self
self%link_index = 0
self%link_urls = " "
self%y = 0
end subroutine prepare_for_dumb_layout
function store_link(self, url)
implicit none
class(dumb_renderer)::self
character(*), intent(in)::url
integer::store_link
self%link_index = self%link_index + 1
self%link_urls(self%link_index) = url
store_link = self%link_index
end function store_link
function dumb_text_width(self, text)
implicit none
class(dumb_renderer)::self
character(*), intent(in)::text
integer::dumb_text_width
dumb_text_width = len_trim(text)
end function dumb_text_width
function dumb_text_height(self, text)
implicit none
class(dumb_renderer)::self
character(*), intent(in)::text
integer::dumb_text_height
dumb_text_height = 1
end function dumb_text_height
function dumb_text_visible(self, text)
implicit none
class(dumb_renderer)::self
character(*), intent(in)::text
logical::dumb_text_visible
integer::onscreen
onscreen = self%y-self%first_line+1
dumb_text_visible = (onscreen >= 0 .AND. onscreen < 24)
end function dumb_text_visible
subroutine dumb_text_draw(self, text)
implicit none
class(dumb_renderer)::self
character(*), intent(in)::text
integer::limit_x
character(5)::formatting
limit_x = min(len_trim(text), self%max_width)
if(limit_x == 0) then
write(*,*) " "
else
if(limit_x < 10) then
write(formatting, '(A2, I1, A1)') '(A', limit_x, ')'
else
write(formatting, '(A2, I2, A1)') '(A', limit_x, ')'
end if
write(*, formatting) text(1:limit_x)
end if
end subroutine dumb_text_draw
function build_link_text(self, text, idnum) result(res)
implicit none
class(dumb_renderer)::self
character(*), intent(in)::text
integer, intent(in)::idnum
character(width)::res
write(res, '(A1, I3, A2)') '[', idnum,']['
if(len_trim(text) < (width - 7)) then
res = trim(res)//trim(text)//']'
else
res = trim(res)//text(1:(width-7))//']'
end if
end function build_link_text
function dumb_link_width(self, text)
implicit none
class(dumb_renderer)::self
character(*), intent(in)::text
integer::dumb_link_width
character(width)::link
link = build_link_text(self, text, 0)
dumb_link_width = dumb_text_width(self, link)
end function dumb_link_width
subroutine dumb_link_draw(self, text, url)
implicit none
class(dumb_renderer)::self
character(*), intent(in)::text, url
integer::i
character(width)::link
i = store_link(self, url)
link = build_link_text(self, text, i)
call dumb_text_draw(self, link)
end subroutine dumb_link_draw
function dumb_request_input(self, question, answer)
implicit none
class(dumb_renderer)::self
character(*), intent(in)::question
character(*), intent(out)::answer
logical::dumb_request_input
! Line Feed
Print *, " "
answer = " "
Print *, question
Read *, answer
! Line Feed
Print *, " "
dumb_request_input = (len_trim(answer) > 0)
end function dumb_request_input
subroutine dumb_draw_error(self, text)
implicit none
class(dumb_renderer)::self
character(*), intent(in)::text
! Line Feed
Print *, " "
Print *, "ERROR: "//trim(text)
! Line Feed
Print *, " "
end subroutine dumb_draw_error
subroutine dumb_draw_status(self, text)
implicit none
class(dumb_renderer)::self
character(*), intent(in)::text
Print *, "*** "//trim(text)//" ***"
end subroutine dumb_draw_status
subroutine prompt_user(input)
implicit none
character(*), intent(out)::input
write(*, '(A68)', advance='no') "*** [A] PgUp | [Z] PgDn | [#] Link | [U] URL | [Q] Quit => "
read(*, *) input
end subroutine prompt_user
function dumb_action(self, text)
use render, only: render_action_none, render_action_layout, &
render_action_goto, render_action_quit
implicit none
class(dumb_renderer)::self
character(*), intent(out)::text
integer::dumb_action
character(256)::input
integer::link_id, iostatus
call prompt_user(input)
if(len_trim(input) == 0) then
dumb_action = render_action_none
else if(trim(input) == "a" .or. trim(input) == "A") then
self%first_line = max(self%first_line - 24, 0)
dumb_action = render_action_layout
else if(trim(input) == "z" .or. trim(input) == "Z") then
self%first_line = self%first_line + 24
dumb_action = render_action_layout
else if(trim(input) == "q" .or. trim(input) == "Q") then
dumb_action = render_action_quit
else if(trim(input) == "u" .or. trim(input) == "U") then
write(*, '(A5)', advance='no') "URL: "
read(*,'(A75)') text
if(len_trim(text) == 0) then
dumb_action = render_action_layout
else
dumb_action = render_action_goto
end if
else
read(input, '(I3)', iostat=iostatus) link_id
if(iostatus == 0 .and. link_id >= 1 .and. link_id <= self%link_index) then
text = self%link_urls(link_id)
dumb_action = render_action_goto
else
Print *, "Error in command: "//trim(input)
dumb_action = render_action_none
end if
end if
end function dumb_action
end module dumb_render
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