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sokoban.love/0034-draw_scrollbar

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start sketching out a scrollbar Not quite ideal: the scrollbar computation only considers screen_bottom1.line and not screen_bottom1.pos, and so it always assumes the final line is at the bottom of the screen. I'm making a deeper change here that I might come to regret. I want to avoid creating new book-keeping for editor mutations, so I'm putting the work of computing scrollbar data into clear_screen_line_cache. But that implies the editor should never clear before updating data, and I caught one place that wasn't true before. A better name helps avoid this in future. Let's see how much toil this causes in resolving conflicts.
2023-11-18 12:20:09 +00:00
draw_scrollbar = function(Editor_state)
App.color(Normal_color)
love.graphics.line(Editor_state.right+30, Editor_state.top, Editor_state.right+30, Editor_state.bottom)
love.graphics.line(Editor_state.right+25, Editor_state.top, Editor_state.right+35, Editor_state.top)
love.graphics.line(Editor_state.right+25, Editor_state.bottom, Editor_state.right+35, Editor_state.bottom)
local sbtop, sbbot = compute_scrollbar(Editor_state)
local topy = Editor_state.top + sbtop*(Editor_state.bottom - Editor_state.top)
local boty = Editor_state.top +sbbot*(Editor_state.bottom - Editor_state.top)
App.color{r=0.6, g=0.6, b=0.8, a=0.5}
slightly inset the scrollbar within its area Mike Stein made the good point that when the buffer is empty it wasn't clear if the blue area was the positive scrollbar or the negative space within the scrollbar area.
2023-11-18 22:37:06 +00:00
love.graphics.rectangle('fill', Editor_state.right+15, topy+5, 30, math.max(boty-topy-10, 5))
mouse events for scrollbar You can either drag the scrollbar or click anywhere in the scrollbar area. It has this weird funkiness that the scrollbar shrinks as you get near the bottom. But it feels.. weirdly satisfying?
2023-11-18 13:26:28 +00:00
Editor_scrollbar_top = topy
Editor_scrollbar_bottom = boty
slightly inset the scrollbar within its area Mike Stein made the good point that when the buffer is empty it wasn't clear if the blue area was the positive scrollbar or the negative space within the scrollbar area.
2023-11-18 22:37:06 +00:00
end