From f85df30e3e7da55c6880a321b3d8dc737f7af5b2 Mon Sep 17 00:00:00 2001 From: William Wilgus Date: Sun, 4 Aug 2019 09:48:09 -0500 Subject: lua add rlimg.lua example script split large includes to separate files Change-Id: I67cac5bc4ce5525ab30abf9443f6cc1a33190512 --- apps/plugins/lua_scripts/rlimg.lua | 919 +++++++++++++++++++++++++++++++++++++ 1 file changed, 919 insertions(+) create mode 100755 apps/plugins/lua_scripts/rlimg.lua (limited to 'apps/plugins/lua_scripts') diff --git a/apps/plugins/lua_scripts/rlimg.lua b/apps/plugins/lua_scripts/rlimg.lua new file mode 100755 index 0000000000..801d0c5fac --- /dev/null +++ b/apps/plugins/lua_scripts/rlimg.lua @@ -0,0 +1,919 @@ +--[[ + __________ __ ___. + Open \______ \ ____ ____ | | _\_ |__ _______ ___ + Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + \/ \/ \/ \/ \/ + $Id$ + Example Lua RBIMAGE script + Copyright (C) 2009 by Maurus Cuelenaere -- some prior work + 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. +]]-- + +require("actions") -- Contains rb.actions & rb.contexts +-- require("buttons") -- Contains rb.buttons -- not needed for this example + +local _math = require("math_ex") -- missing math sine cosine, sqrt, clamp functions +local _timer = require("timer") +local _clr = require("color") -- clrset, clrinc provides device independent colors +local _lcd = require("lcd") -- lcd helper functions +local _print = require("print") -- advanced text printing +local _img = require("image") -- image manipulation save, rotate, resize, tile, new, load +local _img_save = require("image_save") +local _blit = require("blit") -- handy list of blit operations +local _draw = require("draw") -- draw all the things (primitives) +local _draw_floodfill = require("draw_floodfill") +local _draw_text = require("draw_text") + +--local scrpath = rb.current_path()" + +--package.path = scrpath .. "/?.lua;" .. package.path --add lua_scripts directory to path + +require("printmenu") --menu + +--[[ RBIMAGE library functions +NOTE!! on x, y coordinates + width & height +---------------------------------------------- +When making a new image you specify the width and height say (10, 20). +Intutively (at least to me) (0,0) (offset addressing) would reference the first +pixel (top left) and the last pixel (bottom, right) would be (w-1, h-1) or (9, 19) +but the original rbimage library (like lua) uses 1-based arrays (ordinal addressing) +for the image data so the first pixel is (1,1) and the last pixel is (w, h) +this presents a bit of a problem when interfacing with the internal rockbox +functions as you must remeber to convert all lua coordinates to 0 based coordinates. +I have opted to not change this in the name of compatibility with old scripts + +NOTE2!! on width & height versus offset_x & offset_y :copy() +------------------------------------------------------------------------ +The only place where RBIMAGE deviates from (ordinal addressing) is in the blit +/ copy function sx, sy and dx, dy still refer to the same pixel as all the +other functions but offset_x, and offset_y are zero based +Example (assuming same sized images) +dst:copy(src, 1,1, 1,1, 0, 0) +would copy the first pixel from src to the first pixel of dst +dst:copy(src, 1,1, 1,1, dst:width()-1, dst:height()-1) would copy all of src to dst +this might be a bit confusing but makes reversing images (negative offsets) easier. +Since offsets are auto calculated if empty or out of range you could call it as +dst:copy(src, 1,1, 1,1, dst:width(), dst:height()) or even +dst:copy(src, 1,1, 1,1) if you prefered and get the same result +]] + +--'CONSTANTS' (in lua there really is no such thing as all vars are mutable) +-------------------------------------------------------- +--colors for fg/bg ------------------------ +local WHITE = _clr.set(-1, 255, 255, 255) +local BLACK = _clr.set(0, 0, 0, 0) +local RED = _clr.set(WHITE, 255) +local GREEN = _clr.set(WHITE, 0, 255) +local BLUE = _clr.set(WHITE, 0, 0, 255) +------------------------------------------- +local clrs +local CANCEL_BUTTON = rb.actions.PLA_CANCEL + +-- EXAMPLES ---------------------------------------------------------------------- EXAMPLES--------------------------------------------------------------------- +function my_blit(dst_val, dx, dy, src_val, sx, sy) + -- user defined blit operation + --this function gets called for every pixel you specify + --you may change pixels in both the source and dest image + --return nil to stop early + + if _lcd.DEPTH < 2 then + return src_val + end + + if dst_val == WHITE and bit.band(dx, 1) == 1 and bit.band(dy, 1) == 1 then + return BLACK; + elseif dst_val == WHITE then + return src_val + end + + return dst_val +end + +function create_logo() + --[[creates a small logo from data array]] + + -- moves scope of white and black from global to local + local WHITE = WHITE + local BLACK = BLACK + + --[[small array with 16 bits of data per element (16-bits in y direction) + while the number of elements (32) is the x direction. + in other words 16 rows X 32 columns, totally abritrary actually + you could easily rotate or flip it by changing the for loops below ]] + local logo = {0xFFFF, 0xFFFF, 0x8001, 0x8001, 0x9E7F, 0x9E7F, 0x9E7F, 0x9E7F, + 0x9E3F, 0x9E3F, 0x804F, 0x804F, 0xC0E1, 0xC0F1, 0xFFFD, 0xFFFF, + 0xFFFF, 0xFFFF, 0x8001, 0x8001, 0xFF01, 0xFF01, 0xFEFB, 0xFEFB, + 0xFDFD, 0xFDFD, 0xFDFD, 0xFCF9, 0xFE03, 0xFE03, 0xFFFF, 0xFFFF} + + local img, img1, img2, img3 + + img = _img.new(_lcd.W, _lcd.H) + img:clear(BLACK) --[[always clear an image after you create it if you + intend to do any thing besides copy something + entirely to it as there is no guarantee what + state the data within is in, it could be all + 0's or it could be every digit of PI ]] + + -- check for an error condition bail if error + if(not img or not logo) then + return nil + end + + local logosz = table.getn(logo) + local bits = 16 -- each element contains 16 pixels + local data = 0 + + for i=1, math.min(logosz, _lcd.W) do + for j=0, math.min(bits, _lcd.H) do + + if bit.band(bit.lshift(1, bits - j), logo[i]) > 0 then + data = WHITE + else + data = BLACK + end + -- Set the pixel at position i, j+1 to the copied data + img:set(i, j + 1, data) + end + end + + -- make a new image the size of our generated logo + img1 = _img.new(logosz + 1, bits + 1) + + -- img.copy(dest, source, dx, dy, sx, sy, [w, h]) + img1:copy(img, 1, 1, 1, 1) + + --[[lua does auto garbage collection, but it is still + a good idea to set large items to nil when done anyways]] + img = nil + + local sl -- new image size + if _lcd.W < _lcd.H then + sl = _lcd.W / 3 + else + sl = _lcd.H / 3 + end + + -- make sl always even by subtracting 1 if needed + sl = bit.band(sl, bit.bnot(1)) + if sl < 16 then + sl = 16 + end + + img2 = _img.new(sl, sl) + --img2:clear(BLACK) -- doesn't need cleared since we copy to it entirely + + --[[we are going to resize the image since the data supplied is 32 x 16 + pixels its really tiny on most screens]] + _img.resize(img2, img1) + + img1 = nil + + img3 = _img.new(sl, sl) + img3:clear(BLACK) + + if IS_COLOR_TARGET == true then + local c_yellow = _clr.set(WHITE, 0xFC, 0xC0, 0x00) + local c_grey = _clr.set(WHITE, 0xD4, 0xE3, 0xF3) + local c_dkgrey = _clr.set(WHITE, 0xB4, 0xC3, 0xD3) + -- if dest pixel == source pixel make dest pixel yellow + img3:copy(img2, 1, 1, 1, 1, nil, nil, false, _blit.BDEQS, c_yellow) + -- xor src pixel to dest pixel if both are 0 or both are 1 dest = 0 + img2:copy(img3, 1, 1, 2, 1, nil, nil, false, _blit.BXOR) + -- if dest pixel color > src pixel color copy grey to dest + img2:copy(img3, 1, 1, 1, 1, nil, nil, false, _blit.BDGTS, c_grey) + -- set img3 to grey + img3:clear(c_dkgrey) + end + + -- make a WHITE square in the middle + + img3:clear(WHITE, 4,4, img3:width() - 3, img3:height() - 3) + + img3:copy(img2, 1, 1, 1, 1, nil, nil, false, _blit.CUSTOM, my_blit) + img2 = nil + _img_save(img3, "pix.bmp") + return img3 +end -- copy_logo + +-- draws an olive erm ball and returns it +function create_ball() + local sl -- image size + if _lcd.W < _lcd.H then + sl = _lcd.W / 5 + else + sl = _lcd.H / 5 + end + + -- make sl always even by subtracting 1 if needed + sl = bit.band(sl, bit.bnot(1)) + if sl < 16 then + sl = 16 + end + local img = _img.new(sl, sl) + img:clear(0) + _draw.circle_filled(img, sl/2, sl/2, sl/2 - 1, _clr.set(-1, 255), _clr.set(0, 100)) + _draw.circle_filled(img, sl/3, sl/3, sl/10, _clr.set(-1, 255, 0, 0)) + return img +end + +-- bounces img around on screen +function bounce_image(img) + local timer = _timer() -- creates a new timer -- saves index + local wait + -- make a copy of the current screen for later + local screen_img = _lcd:duplicate() + + local img_sqy = _img.new(img:width() + img:width() / 8, img:height()) + local img_sqx = _img.new(img:width(), img:height() + img:height() / 8) + _img.resize(img_sqy, img) + _img.resize(img_sqx, img) + + -- moves definition of CANCEL_BUTTON from global to local + local CANCEL_BUTTON = CANCEL_BUTTON +-------------------------------------------------------- + local imgn = img + local hold = 0 + local sx = 1 -- starting x + local sy = 1 -- starting y + + local ex = _lcd.W - img:width() - 2 + local ey = _lcd.H - img:width() - 2 + + -- threshold resets speed, inverts image + local tx = ex / 5 + local ty = ey / 5 + + local last_x = sx + local last_y = sy + + local x = sx + local y = sy + + local dx = 1 + local dy = 1 + -- negative width\height cause the image to be drawn from the opposite end + local fx = _lcd.W + local fy = _lcd.H + + local function invert_images() + img:invert(); + img_sqx:invert() + img_sqy:invert() + end + + local loops = (_lcd.W * _lcd.H) / 2 + while (loops > 0) do + + if IS_COLOR_TARGET then + if bit.band(loops, 128) == 128 then + _lcd:copy(imgn, x, y, 1, 1, fx, fy, false, _blit.BOR) + _lcd:copy(screen_img, x, y, x, y, imgn:width(), imgn:height(), + false, _blit.BDEQC, imgn:get(1,1)) + else + _lcd:copy(imgn, x, y, 1, 1, fx, fy, false, _blit.BSNEC, imgn:get(1,1)) + end + else + local blitop + + if imgn:get(1,1) ~= 0 then + blitop = _blit.BSNOT + else + blitop = _blit.BXOR + end + + _lcd:copy(imgn, x, y, 1, 1, fx, fy, false, blitop, WHITE) + end + + if hold < 1 then + imgn = img + else + hold = hold - 1 + end + _lcd:update() + + x = x + dx + y = y + dy + + if y >= ey or y <= sy then + dy = (-dy) + fy = (-fy) + imgn = img_sqy + hold = 3 + if dx < 0 and y < 10 then + dx = dx - 5 + end + if dx > tx then + dx = 5; + dy = 5; + invert_images() + end + end + + if x >= ex or x <= sx then + dx = (-dx) + fx = (-fx) + imgn = img_sqx + hold = 3 + if dy < 0 and x < 10 then + dy = dy - 5 + end + if dy > ty then + dx = 5; + dy = 5; + invert_images() + end + end + + x = _math.clamp(x, sx, ex) + y = _math.clamp(y, sy, ey) + + -- copy original image back to screen + _lcd:copy(screen_img) + + loops = loops -1 + + wait = timer:check(true) --checks timer and updates last time + if wait >= 5 then + wait = 0 + elseif wait < 5 then + wait = 5 - wait + end + -- 0 = timeout immediately + -- ( -1 would be never timeout, and >0 is amount of 'ticks' before timeout) + if rb.get_plugin_action(wait) == CANCEL_BUTTON then + break; + end + end + + timer:stop() -- destroys timer, also returns time since last time + + -- leave the screen how we found it + _lcd:copy(screen_img) +end -- image_bounce + +-- draws a gradient using available colors +function draw_gradient(img, x, y, w, h, direction, clrs) + x = x or 1 + y = y or 1 + w = w or img:width() - x + h = h or img:height() - y + local zstep = 0 + local step = 1 + if IS_COLOR_TARGET == true then -- Only do this when we're on a color target + local z = 1 + local c = 1 + clrs = clrs or {255,255,255} + local function gradient_rgb(p, c1, c2) + -- tried squares of difference but blends were very abrupt + local r = c1.r + (p * (c2.r - c1.r) / 10500) + local g = c1.g + (p * (c2.g - c1.g) / 10000) + local b = c1.b + (p * (c2.b - c1.b) / 09999) + return _clr.set(nil, r, g, b) + end + local function check_z() + if z > 10000 and c < #clrs - 1 then + z = 1 + c = c + 1 + elseif z > 10000 then + z = 10000 + end + end + if direction == "V" then + zstep = math.max(1, (10000 / ((w - 1) / (#clrs - 1)) + bit.band(#clrs, 1))) + for i=x, w + x do + check_z() + _draw.vline(img, i, y, h, gradient_rgb(z, clrs[c], clrs[c + 1])) + z = z + zstep + end + else + zstep = math.max(1, (10000 / ((h - 1) / (#clrs - 1)) + bit.band(#clrs, 1))) + for j=y, h + y do + check_z() + _draw.hline(img, x, j, w, gradient_rgb(z, clrs[c], clrs[c + 1])) + z = z + zstep + end + end + else -- not a color target but might be greyscale + local clr = _clr.set(-1) + for i=x, w + x do + for j=y, h + y do + -- Set the pixel at position i, j to the specified color + img:set(i, j, clr) + end + clr = _clr.inc(clr, 1) + end + end +--rb.sleep(1000) +end -- draw_gradient + +function twist(img) +--[[ local fg + if rb.lcd_get_foreground then + fg = rb.lcd_get_foreground() + end]] + + local ims = {} + ims.strip = _img.tile(img, img:width(), _lcd.H + img:height()) + ims.y_init = {img:height(), 1} + ims.y_finl = {1, img:height()} + ims.y_inc = {-2, 4} + ims.y_pos = nil + + -- together define the width of the overall object + local x_off=(_lcd.W/2) + local m = _lcd.W + local z = -m + local zi = 1 + + -- angles of rotation for each leaf + local ANGLES = {0, 45, 90, 135, 180, 225, 270, 315} + local elems = #ANGLES + local _XCOORD = {} + + -- color alternates each leaf + local colors = { WHITE, _clr.set(0, 0, 0, 0) } + local c = 0 + + -- calculated position of each point in the sine wave(s) + local xs, xe + + --[[--Profiling code + local timer = _timer.start()]] + + for rot = 0, 6000, 4 do + _lcd:clear(BLACK) + + for y=1, _lcd.H do + + local function get_sines() + local sc = m + z + if sc == 0 then + sc = 1 -- prevent divide by 0 + elseif sc + z > _lcd.W then + zi = -1 + colors[2] = _clr.inc(colors[2], 1, 0, 50, 0) + elseif sc + z < -(_lcd.W) then + zi = 1 + colors[1] = _clr.inc(colors[1], -1, 0, 10, 0) + end + if colors[2] == colors[1] then + colors[2] = _clr.inc(colors[2], 1) + end + for j = 1, elems do + _XCOORD[j] = _math.d_sin(y + ANGLES[j] + rot) / sc + x_off + end + _XCOORD[0] = _XCOORD[elems] -- loop table for efficient wrap + end + + get_sines() + for k = 1, elems do + xs = _XCOORD[k] + xe = _XCOORD[(k+1) % elems] + if xs < 1 or xe > _lcd.W then + while xs < 1 or xe > _lcd.W do + m = m + 1 -- shift m in order to scale object min/max + get_sines() + xs = _XCOORD[k] + xe = _XCOORD[(k+1) % elems] + end + end + c = (c % 2) + 1 + if xs < xe then + -- defines the direction of leaves & fills them + + _lcd:set(xs, y, colors[c]) + _lcd:set(xe, y, colors[c]) + _lcd:line(xs + 1, y, xe - 1, y, colors[3 - c], true) + end + end + + end + + do -- stripes and shifts image strips; blits it into the colors(1) leaves + local y + local y_col = 1 + local w = ims.strip:width() - 1 + local h = ims.strip:height() - 1 + if ims.y_pos ~= nil then + for i = 1, #ims.y_pos do + ims.y_pos[i] = ims.y_pos[i] + ims.y_inc[i] + + if (ims.y_inc[i] > 0 and ims.y_pos[i] > ims.y_finl[i]) + or (ims.y_inc[i] < 0 and ims.y_pos[i] < ims.y_finl[i]) then + ims.y_pos[i] = ims.y_init[i] + end + end + else + ims.y_pos = {ims.y_init[1], ims.y_init[2]} + end + + for ix = 1, _lcd.W, w do + y_col = y_col + 1 + y = ims.y_pos[(y_col % 2) + 1] + if _lcd.DEPTH > 1 then + _lcd:copy(ims.strip, ix, 1, 1, y, w, h, false, _blit.BDEQC, colors[1]) + else + _lcd:copy(ims.strip, ix, 1, 1, y, w, h, false, _blit.BSAND) + end + end + end + + _lcd:update() + z = z + zi + + if rb.get_plugin_action(0) == CANCEL_BUTTON then + break + end + collectgarbage("step") + end + --[[--Profiling code + _print.f("%d", _timer.stop(timer)) + rb.sleep(rb.HZ * 10)]] +end -- twist + +function draw_target(img) + + local clr = _clr.set(0, 0, 0, 0) + + -- make a copy of original screen for restoration + local screen_img = _lcd:duplicate() + + rad_m = math.min(_lcd.W, _lcd.H) + + for s = -_lcd.W /4, 16 do + img:copy(screen_img) + s = math.max(1, math.abs(s)) + for r = 1, rad_m /2 - 10, s do + clr = _clr.inc(clr, 1, r * 5, r * 10, r * 20) + _draw.circle(img, _lcd.CX, _lcd.CY, r, clr) + end + + _lcd:update() + if rb.get_plugin_action( 20) == CANCEL_BUTTON then + z = 16; + break; + end + end + +end -- draw_target + +function draw_sweep(img, cx, cy, radius, color) + local timer = _timer() --creates a new timer saves index + local wait + local x + local y + --make a copy of original screen for restoration + local screen_img = _lcd:duplicate() + _draw.circle(img, cx, cy, radius, color) + for d = 630, 270, - 5 do + if d % 45 == 0 then + img:copy(screen_img) + _draw.circle(img, cx, cy, radius, color) + l = 0 + end + x = cx + radius * _math.d_cos(d) / 10000 + y = cy + radius * _math.d_sin(d) / 10000 + + + _draw.line(img, cx, cy, x, y, color) + l = l + 1 + if l > 1 then + x1 = cx + (radius - 1) * _math.d_cos(d + 1) / 10000 + y1 = cy + (radius - 1) * _math.d_sin(d + 1) / 10000 + _draw_floodfill(img, x1, y1, BLACK, color) + end + _lcd:update() + wait = timer:check(true) --checks timer and updates last time + if wait >= 50 then + wait = 0 + elseif wait < 50 then + wait = 50 - wait + end + if rb.get_plugin_action( wait) == CANCEL_BUTTON then + break + end + end + timer:stop() --destroys timer, also returns time since last time + screen_img = nil +end -- draw_sweep + +function rotate_image(img) + local blitop = _blit.BOR + local i = 1 + local d = 0 + local ximg + local x, y, w, h, xr, yr + + ximg = _img.rotate(img, 45) -- image will be largest at this point + w = ximg:width() + h = ximg:height() + xr = (_lcd.W - w) / 2 + yr = (_lcd.H - h) / 2 + --make a copy of original screen for restoration + local screen_img -- = _lcd:duplicate() + screen_img =_img.new(w, h) + screen_img :copy(_LCD, 1, 1, xr, yr, w, h) + --_print.f("CW") + + --[[--Profiling code + local timer = _timer.start()]] + + while d >= 0 do + ximg = _img.rotate(img, d) + w = ximg:width() + h = ximg:height() + x = (_lcd.W - w) / 2 + y = (_lcd.H - h) / 2 + + -- copy our rotated image onto the background + _lcd:copy(ximg, x, y, 1, 1, w, h, false, blitop) + _lcd:update() + --restore the portion of the background we destroyed + _lcd:copy(screen_img, xr, yr, 1, 1) + + if d > 0 and d % 360 == 0 then + _lcd:copy(ximg, x, y, 1, 1, w, h) + _lcd:update() + if i == 1 then i = 0 end + if d == 1440 or i < 0 then + if i < 0 then + i = i - 5 + else + i = - 5 + end + blitop = _blit.BXOR + --_print.f("CCW") + --rb.sleep(rb.HZ) + else + i = i + 5 + --_print.f("CW") + --rb.sleep(rb.HZ) + end + + end + d = d + i + + if rb.get_plugin_action(0) == CANCEL_BUTTON then + break; + end + end + + _lcd:copy(ximg, x, y, 1, 1, w, h) + --[[-- Profiling code + _print.f("%d", _timer.stop(timer)) + rb.sleep(rb.HZ * 10)]] +end -- rotate_image + +-- shows blitting with a mask +function blit_mask(dst) + local timer = _timer() + local r = math.min(_lcd.CX, _lcd.CY) / 5 + + local bmask = _img.new(_lcd.W, _lcd.H) + bmask:clear(0) + + _draw.circle_filled(bmask, _lcd.CX, _lcd.CY, r, WHITE) + local color = _clr.set(0, 0, 0 ,0) + for z = 0, 100 do + z = z + timer:check(true) + color = _clr.inc(color, 1, z * 5, z * 10, z * 20) + dst:copy(bmask, 1, 1, 1, 1, nil, nil, false, _blit.BSAND, color) + _lcd:update() + + if rb.get_plugin_action(0) == CANCEL_BUTTON then + break + end + end +end -- blit_mask + +-- draws an X on the screen +function draw_x() + _draw.line(_LCD, 1, 1, _lcd.W, _lcd.H, WHITE) + _draw.line(_LCD, _lcd.W, 1, 1, _lcd.H, WHITE) + + _draw.hline(_LCD, 10, _lcd.CY , _lcd.W - 21, WHITE) + + _draw.vline(_LCD, _lcd.CX, 20 , _lcd.H - 41, WHITE) + + _draw.rect(_LCD, _lcd.CX - 17, _lcd.CY - 17, 34, 34, WHITE) + _lcd:update() + rb.sleep(100) +end -- draw_x + +--fills an image with random colors +function random_img(img) + local min = _clr.set(0, 0, 0, 0) + local max = _clr.set(-1, 255, 255, 255) + math.randomseed(rb.current_tick()) + for x = 1, img:width() do + for y = 1, img:height() do + img:set(x, y, math.random(min, max)) + end + end +end -- random_img + +function rainbow_img(img) +--draw a gradient using available colors + if IS_COLOR_TARGET == true then + --R O Y G B I V + clrs = { + {r = 255, g = 255, b = 255}, -- white + {r = 000, g = 000, b = 000}, -- black + {r = 200, g = 000, b = 000}, -- red + {r = 255, g = 000, b = 000}, -- red + {r = 255, g = 100, b = 033}, -- orange + {r = 255, g = 127, b = 000}, -- orange + {r = 255, g = 200, b = 033}, -- yellow + {r = 255, g = 255, b = 000}, -- yellow + {r = 050, g = 255, b = 000}, -- green + {r = 000, g = 125, b = 125}, -- green + {r = 000, g = 000, b = 255}, -- blue + {r = 033, g = 025, b = 200}, -- indigo + {r = 075, g = 000, b = 150}, -- indigo + {r = 127, g = 000, b = 150}, -- violet + {r = 150, g = 000, b = 255}, -- violet + {r = 255, g = 255, b = 255}, -- white + {r = 000, g = 000, b = 000}, -- black + } + else + end + draw_gradient(img, 1, 1, nil, nil, "V", clrs) +end -- rainbow_img + +-- draws a rounded rectangle with text +function rock_lua() + local res, w, h = _lcd:text_extent("W", rb.FONT_UI) + w = _lcd.W - 10 + h = h + 4 + _draw.rounded_rect_filled(_LCD, 5, 5, w, h, 15, WHITE) + _draw_text(_LCD, 5, 5, w, h, nil, BLACK, "ROCKlua!") + _lcd:update() + rb.sleep(100) +end -- rock_lua + +-- draws a rounded rectangle with long text +function long_text() + local txt = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890" + local res, w, h = _lcd:text_extent(txt, rb.FONT_UI) + local resp, wp, hp = _lcd:text_extent(" ", rb.FONT_UI) + local wait = 0 + w = w + wp * 3 + h = h + 4 + local img = _img.new(w + 1, h) + img:clear(BLACK) + _draw.rounded_rect_filled(img, 1, 1, w, h, 15, WHITE) + _draw_text(img, 1, 2, nil, nil, nil, BLACK, txt) + + for p = -w + 1, w - 1 do + wait = 0 + p = math.abs(p) + _lcd:copy(img, 1, _lcd.H - h, w - p, 1) + _lcd:update() + if p == 0 or w - p == 1 then wait = 100; rb.sleep(50) end + if rb.get_plugin_action(wait) == CANCEL_BUTTON then + break + end + end + +end -- long_text + +-- creates or loads an image to use as logo +function get_logo() + local logo_img = _img.load("/pix.bmp") --loads the previously saved image (if we saved it before) + + --create a logo if an image wasn't saved previously + if(not logo_img) then + logo_img = create_logo() + end + + --fallback + if(not logo_img) then + -- Load a BMP file in the variable backdrop + local base = "/.rockbox/icons/" + local backdrop = _img.load("/image.bmp") --user supplied image + or _img.load(base .. "tango_small_viewers.bmp") + or _img.load(base .. "tango_small_viewers_mono.bmp") + or _img.load(base .. "tango_small_mono.bmp") + or _img.load(base .. "tango_icons.16x16.bmp") + or _img.load(base .. "tango_icons_viewers.16x16.bmp") + or _img.load(base .. "viewers.bmp") + or _img.load(base .. "viewers.6x8x1.bmp") + or _img.load(base .. "viewers.6x8x2.bmp") + or _img.load(base .. "viewers.6x8x10.bmp") + or _img.load(base .. "viewers.6x8x16.bmp") + logo_img = backdrop + end + return logo_img +end -- get_logo + +-- uses print_table to display a menu +function main_menu() + + local mt = { + [1] = "Rocklua RLI Example", + [2] = "The X", + [3] = "Blit Mask", + [4] = "Target", + [5] = "Sweep", + [6] = "Bouncing Ball (olive)", + [7] = "The Twist", + [8] = "Image Rotation", + [9] = "Long Text", + [10] = "Rainbow Image", + [11] = "Random Image", + [12] = "Clear Screen", + [13] = "Save Screen", + [14] = "Exit" + } + local ft = { + [0] = exit_now, --if user cancels do this function + [1] = function(TITLE) return true end, -- shouldn't happen title occupies this slot + [2] = function(THE_X) draw_x() end, + [3] = function(BLITM) blit_mask(_lcd()) end, + [4] = function(TARGT) draw_target(_lcd()) end, + [5] = function(SWEEP) + local r = math.min(_lcd.CX, _lcd.CY) - 20 + draw_sweep(_lcd(), _lcd.CX, _lcd.CY, r, _clr.set(-1, 0, 255, 0)) + end, + [6] = function(BOUNC) bounce_image(create_ball()) end, + [7] = function(TWIST) twist(get_logo()) end, + [8] = function(ROTAT) rotate_image(get_logo()) end, + [9] = long_text, + [10] = function(RAINB) + rainbow_img(_lcd()); _lcd:update(); rb.sleep(rb.HZ) + end, + [11] = function(RANDM) + random_img(_lcd()); _lcd:update(); rb.sleep(rb.HZ) + end, + [12] = function(CLEAR) _lcd:clear(BLACK); rock_lua() end, + [13] = function(SAVEI) _LCD:invert(); _img_save(_LCD, "/rocklua.bmp") end, + [14] = function(EXIT_) return true end + } + + if _lcd.DEPTH < 2 then + table.remove(mt, 10) + table.remove(ft, 10) + end + + print_menu(mt, ft) + +end +-------------------------------------------------------------------------------- +function exit_now() + _lcd:update() + _lcd:splashf(rb.HZ * 5, "ran for %d seconds", _timer.stop("main") / rb.HZ) + os.exit() +end -- exit_now +-------------------------------------------------------------------------------- + +--MAIN PROGRAM------------------------------------------------------------------ +_timer("main") -- keep track of how long the program ran + +-- Clear the screen +_lcd:clear(BLACK) + +if _lcd.DEPTH > 1 then +--draw a gradient using available colors +if IS_COLOR_TARGET == true then + clrs = { + {r = 255, g = 000, b = 000}, -- red + {r = 000, g = 255, b = 000}, -- green + {r = 000, g = 000, b = 255}, -- blue + } +else +end + local w = bit.rshift(_lcd.W, 2) + local h = bit.rshift(_lcd.H, 2) + draw_gradient(_lcd(), (_lcd.W - w)/2 - 1, (_lcd.H - h)/3 - 1, w, h, "H", clrs) + _lcd:update() + rb.sleep(rb.HZ) +end + +do +local img = _img.load("/rocklua.bmp") + if not img then + rock_lua() + else + _lcd:image(img) + end +end +_lcd:update() +rb.sleep(rb.HZ / 2) + +if rb.cpu_boost then rb.cpu_boost(true) end + +main_menu() + +if rb.cpu_boost then rb.cpu_boost(false) end + +exit_now() + +-- For a reference list of all functions available, see apps/plugins/lua/rocklib.c (and apps/plugin.h) -- cgit v1.2.3