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| author | William Wilgus <me.theuser@yahoo.com> | 2018-07-22 18:43:04 +0200 |
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| committer | William Wilgus <me.theuser@yahoo.com> | 2018-07-22 18:43:04 +0200 |
| commit | ef210b5fe4f72a102dcaa1f752d3022d62da8bc4 (patch) | |
| tree | 54f00fe62f23ca6fc387b6f8702cf6737f795032 /apps/plugins/lua/include_lua/draw.lua | |
| parent | 2daec3d3c3d84e7176a22bc073ca5530e8e44c6d (diff) | |
| download | rockbox-ef210b5fe4f72a102dcaa1f752d3022d62da8bc4.zip rockbox-ef210b5fe4f72a102dcaa1f752d3022d62da8bc4.tar.gz rockbox-ef210b5fe4f72a102dcaa1f752d3022d62da8bc4.tar.bz2 rockbox-ef210b5fe4f72a102dcaa1f752d3022d62da8bc4.tar.xz | |
Revert "Rocklua -- Extend / Fix rliImage"
This reverts commit 2daec3d3c3d84e7176a22bc073ca5530e8e44c6d.
Change-Id: I53ea1f491e3c6d6fb759f426f203f927bd26b1e9
Diffstat (limited to 'apps/plugins/lua/include_lua/draw.lua')
| -rw-r--r-- | apps/plugins/lua/include_lua/draw.lua | 468 |
1 files changed, 0 insertions, 468 deletions
diff --git a/apps/plugins/lua/include_lua/draw.lua b/apps/plugins/lua/include_lua/draw.lua deleted file mode 100644 index f59e439..0000000 --- a/apps/plugins/lua/include_lua/draw.lua +++ /dev/null @@ -1,468 +0,0 @@ ---[[ Lua Drawing functions -/*************************************************************************** - * __________ __ ___. - * Open \______ \ ____ ____ | | _\_ |__ _______ ___ - * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / - * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < - * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ - * \/ \/ \/ \/ \/ - * $Id$ - * - * Copyright (C) 2017 William Wilgus - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY - * KIND, either express or implied. - * - ****************************************************************************/ -]] - ---[[ Exposed Functions - - _draw.circle - _draw.circle_filled - _draw.ellipse - _draw.ellipse_filled - _draw.ellipse_rect_filled - _draw.ellipse_rect - _draw.flood_fill - _draw.hline - _draw.image - _draw.line - _draw.polygon - _draw.polyline - _draw.rect - _draw.rect_filled - _draw.rounded_rect - _draw.rounded_rect_filled - _draw.text - _draw.vline - -]] - ---[[ bClip allows drawing out of bounds without raising an error it is slower - than having a correctly bounded figure, but can be helpful in some cases.. -]] - -if not rb.lcd_framebuffer then rb.splash(rb.HZ, "No Support!") return nil end - -local _draw = {} do - - -- Internal Constants - local _LCD = rb.lcd_framebuffer() - local LCD_W, LCD_H = rb.LCD_WIDTH, rb.LCD_HEIGHT - local BSAND = 8 -- blits color to dst if src <> 0 - local _NIL = nil -- nil placeholder - - local function set_viewport(vp) - if not vp then rb.set_viewport() return end - if rb.LCD_DEPTH == 2 then -- invert 2-bit screens - --vp.drawmode = bit.bxor(vp.drawmode, 4) - vp.fg_pattern = 3 - vp.fg_pattern - vp.bg_pattern = 3 - vp.bg_pattern - end - rb.set_viewport(vp) - end - - -- line - local function line(img, x1, y1, x2, y2, color, bClip) - img:line(x1, y1, x2, y2, color, bClip) - end - - -- horizontal line; x, y define start point; length in horizontal direction - local function hline(img, x, y , length, color, bClip) - img:line(x, y, x + length, _NIL, color, bClip) - end - - -- vertical line; x, y define start point; length in vertical direction - local function vline(img, x, y , length, color, bClip) - img:line(x, y, _NIL, y + length, color, bClip) - end - - -- draws a non-filled figure based on points in t-points - local function polyline(img, x, y, t_points, color, bClosed, bClip) - if #t_points < 2 then error("not enough points", 3) end - - local pt_first_last - - if bClosed then - pt_first_last = t_points[1] - else - pt_first_last = t_points[#t_points] - end - - for i = 1, #t_points, 1 do - local pt1 = t_points[i] - - local pt2 = t_points[i + 1] or pt_first_last-- first and last point - - img:line(pt1[1] + x, pt1[2] + y, pt2[1]+x, pt2[2]+y, color, bClip) - end - - end - - -- rectangle - local function rect(img, x, y, width, height, color, bClip) - if width == 0 or height == 0 then return end - - local ppt = {{0, 0}, {width, 0}, {width, height}, {0, height}} - polyline(img, x, y, ppt, color, true, bClip) - --[[ - vline(img, x, y, height, color, bClip); - vline(img, x + width, y, height, color, bClip); - hline(img, x, y, width, color, bClip); - hline(img, x, y + height, width, color, bClip);]] - end - - -- filled rect, fillcolor is color if left empty - local function rect_filled(img, x, y, width, height, color, fillcolor, bClip) - if width == 0 or height == 0 then return end - - if not fillcolor then - img:clear(color, x, y, x + width, y + height, bClip) - else - img:clear(fillcolor, x, y, x + width, y + height, bClip) - rect(img, x, y, width, height, color, bClip) - end - end - - -- circle cx,cy define center point - local function circle(img, cx, cy, radius, color, bClip) - local r = radius - img:ellipse(cx - r, cy - r, cx + r, cy + r, color, _NIL, bClip) - end - - -- filled circle cx,cy define center, fillcolor is color if left empty - local function circle_filled(img, cx, cy, radius, color, fillcolor, bClip) - fillcolor = fillcolor or color - local r = radius - img:ellipse(cx - r, cy - r, cx + r, cy + r, color, fillcolor, bClip) - end - - -- ellipse that fits into defined rect - local function ellipse_rect(img, x1, y1, x2, y2, color, bClip) - img:ellipse(x1, y1, x2, y2, color, _NIL, bClip) - end - - --ellipse that fits into defined rect, fillcolor is color if left empty - local function ellipse_rect_filled(img, x1, y1, x2, y2, color, fillcolor, bClip) - if not fillcolor then fillcolor = color end - - img:ellipse(x1, y1, x2, y2, color, fillcolor, bClip) - end - - -- ellipse cx, cy define center point; a, b the major/minor axis - local function ellipse(img, cx, cy, a, b, color, bClip) - img:ellipse(cx - a, cy - b, cx + a, cy + b, color, _NIL, bClip) - end - - -- filled ellipse cx, cy define center point; a, b the major/minor axis - -- fillcolor is color if left empty - local function ellipse_filled(img, cx, cy, a, b, color, fillcolor, bClip) - if not fillcolor then fillcolor = color end - - img:ellipse(cx - a, cy - b, cx + a, cy + b, color, fillcolor, bClip) - end - - -- rounded rectangle - local function rounded_rect(img, x, y, w, h, radius, color, bClip) - local c_img - - local function blit(dx, dy, sx, sy, ox, oy) - img:copy(c_img, dx, dy, sx, sy, ox, oy, bClip, BSAND, color) - end - - if w == 0 or h == 0 then return end - - -- limit the radius of the circle otherwise it will overtake the rect - radius = math.min(w / 2, radius) - radius = math.min(h / 2, radius) - - local r = radius - - c_img = rb.new_image(r * 2 + 1, r * 2 + 1) - c_img:clear(0) - circle(c_img, r + 1, r + 1, r, 0xFFFFFF) - - -- copy 4 pieces of circle to their respective corners - blit(x, y, _NIL, _NIL, r + 1, r + 1) --TL - blit(x + w - r - 2, y, r, _NIL, r + 1, r + 1) --TR - blit(x , y + h - r - 2, _NIL, r, r + 1, _NIL) --BL - blit(x + w - r - 2, y + h - r - 2, r, r, r + 1, r + 1)--BR - c_img = _NIL - - vline(img, x, y + r, h - r * 2, color, bClip); - vline(img, x + w - 1, y + r, h - r * 2, color, bClip); - hline(img, x + r, y, w - r * 2, color, bClip); - hline(img, x + r, y + h - 1, w - r * 2, color, bClip); - end - - -- rounded rectangle fillcolor is color if left empty - local function rounded_rect_filled(img, x, y, w, h, radius, color, fillcolor, bClip) - local c_img - - local function blit(dx, dy, sx, sy, ox, oy) - img:copy(c_img, dx, dy, sx, sy, ox, oy, bClip, BSAND, fillcolor) - end - - if w == 0 or h == 0 then return end - - if not fillcolor then fillcolor = color end - - -- limit the radius of the circle otherwise it will overtake the rect - radius = math.min(w / 2, radius) - radius = math.min(h / 2, radius) - - local r = radius - - c_img = rb.new_image(r * 2 + 1, r * 2 + 1) - c_img:clear(0) - circle_filled(c_img, r + 1, r + 1, r, fillcolor) - - -- copy 4 pieces of circle to their respective corners - blit(x, y, _NIL, _NIL, r + 1, r + 1) --TL - blit(x + w - r - 2, y, r, _NIL, r + 1, r + 1) --TR - blit(x, y + h - r - 2, _NIL, r, r + 1, _NIL) --BL - blit(x + w - r - 2, y + h - r - 2, r, r, r + 1, r + 1) --BR - c_img = _NIL - - -- finish filling areas circles didn't cover - img:clear(fillcolor, x + r, y, x + w - r, y + h - 1, bClip) - img:clear(fillcolor, x, y + r, x + r, y + h - r, bClip) - img:clear(fillcolor, x + w - r, y + r, x + w - 1, y + h - r - 1, bClip) - - if fillcolor ~= color then - rounded_rect(img, x, y, w, h, r, color, bClip) - end - end - - -- draws an image at xy coord in dest image - local function image(dst, src, x, y, bClip) - if not src then --make sure an image was passed, otherwise bail - rb.splash(rb.HZ, "No Image!") - return _NIL - end - - dst:copy(src, x, y, 1, 1, _NIL, _NIL, bClip) - end - - -- floods an area of targetclr with fillclr x, y specifies the start seed - function flood_fill(img, x, y, targetclr, fillclr) - -- scanline 4-way flood algorithm - -- ^ - -- <--------x---> - -- v - -- check that target color doesn't = fill and the first point is target color - if targetclr == fillclr or targetclr ~= img:get(x,y, true) then return end - local max_w = img:width() - local max_h = img:height() - - local qpt = {} -- FIFO queue - -- rather than moving elements around in our FIFO queue - -- for each read; increment 'qhead' by 2 - -- set both elements to nil and let the - -- garbage collector worry about it - -- for each write; increment 'qtail' by 2 - -- x coordinates are in odd indices while - -- y coordinates are in even indices - - local qtail = 0 - local iter_n; -- North iteration - local iter_s; -- South iteration - - local function check_ns(val, x, y) - if targetclr == val then - if targetclr == iter_n() then - qtail = qtail + 2 - qpt[qtail - 1] = x - qpt[qtail] = (y - 1) - end - - if targetclr == iter_s() then - qtail = qtail + 2 - qpt[qtail - 1] = x - qpt[qtail] = (y + 1) - end - return fillclr - end - return _NIL -- signal marshal to stop - end - - local function seed_pt(x, y) - -- will never hit max_w * max_h^2 but make sure not to end early - for qhead = 2, max_w * max_h * max_w * max_h, 2 do - - if targetclr == img:get(x, y, true) then - iter_n = img:points(x, y - 1, 1, y - 1) - iter_s = img:points(x, y + 1, 1, y + 1) - img:marshal(x, y, 1, y, _NIL, _NIL, true, check_ns) - - iter_n = img:points(x + 1, y - 1, max_w, y - 1) - iter_s = img:points(x + 1, y + 1, max_w, y + 1) - img:marshal(x + 1, y, max_w, y, _NIL, _NIL, true, check_ns) - end - - x = qpt[qhead - 1] - qpt[qhead - 1] = _NIL - - if not x then break end - - y = qpt[qhead] - qpt[qhead] = _NIL - end - end - - seed_pt(x, y) -- Begin - end -- flood_fill - - -- draws a closed figure based on points in t_points - local function polygon(img, x, y, t_points, color, fillcolor, bClip) - if #t_points < 2 then error("not enough points", 3) end - - if fillcolor then - local x_min, x_max = 0, 0 - local y_min, y_max = 0, 0 - local w, h = 0, 0 - -- find boundries of polygon - for i = 1, #t_points, 1 do - local pt = t_points[i] - if pt[1] < x_min then x_min = pt[1] end - if pt[1] > x_max then x_max = pt[1] end - if pt[2] < y_min then y_min = pt[2] end - if pt[2] > y_max then y_max = pt[2] end - end - w = math.abs(x_max) + math.abs(x_min) - h = math.abs(y_max) + math.abs(y_min) - x_min = x_min - 2 -- leave a border to use flood_fill - y_min = y_min - 2 - - local fill_img = rb.new_image(w + 3, h + 3) - fill_img:clear(0xFFFFFF) - - for i = 1, #t_points, 1 do - local pt1 = t_points[i] - local pt2 = t_points[i + 1] or t_points[1]-- first and last point - fill_img:line(pt1[1] - x_min, pt1[2] - y_min, - pt2[1]- x_min, pt2[2] - y_min, 0) - - end - flood_fill(fill_img, fill_img:width(), fill_img:height() , 1, 0) - img:copy(fill_img, x - 1, y - 1, _NIL, _NIL, _NIL, _NIL, bClip, BSAND, fillcolor) - end - - polyline(img, x, y, t_points, color, true, bClip) - end - - -- draw text onto image if width/height are supplied text is centered - local function text(img, x, y, width, height, font, color, text) - font = font or rb.FONT_UI - - local opts = {x = 0, y = 0, width = LCD_W - 1, height = LCD_H - 1, - font = font, drawmode = 3, fg_pattern = 0xFFFFFF, bg_pattern = 0} - set_viewport(opts) - - local res, w, h = rb.font_getstringsize(text, font) - - if not width then - width = 0 - else - width = (width - w) / 2 - end - - if not height then - height = 0 - else - height = (height - h) / 2 - end - - -- make a copy of the current screen for later - local screen_img = rb.new_image(LCD_W, LCD_H) - screen_img:copy(_LCD) - - -- check if the screen buffer is supplied image if so set img to the copy - if img == _LCD then - img = screen_img - end - - -- we will be printing the text to the screen then blitting into img - rb.lcd_clear_display() - - local function blit(dx, dy) - img:copy(_LCD, dx, dy, _NIL, _NIL, _NIL, _NIL, false, BSAND, color) - end - - if w > LCD_W then -- text is too long for the screen do it in chunks - local l = 1 - local resp, wp, hp - local lenr = text:len() - - while lenr > 1 do - l = lenr - resp, wp, hp = rb.font_getstringsize(text:sub(1, l), font) - - while wp >= LCD_W and l > 1 do - l = l - 1 - resp, wp, hp = rb.font_getstringsize(text:sub( 1, l), font) - end - - rb.lcd_putsxy(0, 0, text:sub(1, l)) - text = text:sub(l) - - if x + width > img:width() or y + height > img:height() then - break - end - - -- using the mask we made blit color into img - blit(x + width, y + height) - x = x + wp - rb.lcd_clear_display() - lenr = text:len() - end - else --w <= LCD_W - rb.lcd_putsxy(0, 0, text) - - -- using the mask we made blit color into img - blit(x + width, y + height) - end - - _LCD:copy(screen_img) -- restore screen - set_viewport() -- set viewport default - return res, w, h - end - - -- expose functions to the outside through _draw table - _draw.image = image - _draw.text = text - _draw.line = line - _draw.hline = hline - _draw.vline = vline - _draw.polygon = polygon - _draw.polyline = polyline - _draw.rect = rect - _draw.circle = circle - _draw.ellipse = ellipse - _draw.flood_fill = flood_fill - _draw.ellipse_rect = ellipse_rect - _draw.rounded_rect = rounded_rect - -- filled functions use color as fillcolor if fillcolor is left empty... - _draw.rect_filled = rect_filled - _draw.circle_filled = circle_filled - _draw.ellipse_filled = ellipse_filled - _draw.ellipse_rect_filled = ellipse_rect_filled - _draw.rounded_rect_filled = rounded_rect_filled - - -- adds the above _draw functions into the metatable for RLI_IMAGE - local ex = getmetatable(rb.lcd_framebuffer()) - for k, v in pairs(_draw) do - if ex[k] == _NIL then - ex[k] = v - end - end - -end -- _draw functions - -return _draw |