summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorWilliam Wilgus <me.theuser@yahoo.com>2019-08-04 09:48:09 -0500
committerWilliam Wilgus <me.theuser@yahoo.com>2019-08-04 16:57:02 +0200
commitf85df30e3e7da55c6880a321b3d8dc737f7af5b2 (patch)
treec778d743feef43162f53df9c1b642912822f664e
parent4209c097705ce474f955bf1d73ca6ccf1ac6786a (diff)
downloadrockbox-f85df30e3e7da55c6880a321b3d8dc737f7af5b2.tar.gz
rockbox-f85df30e3e7da55c6880a321b3d8dc737f7af5b2.tar.bz2
rockbox-f85df30e3e7da55c6880a321b3d8dc737f7af5b2.zip
lua add rlimg.lua example script split large includes to separate files
Change-Id: I67cac5bc4ce5525ab30abf9443f6cc1a33190512
-rw-r--r--apps/plugins/lua/include_lua/draw.lua216
-rw-r--r--apps/plugins/lua/include_lua/draw_floodfill.lua95
-rw-r--r--apps/plugins/lua/include_lua/draw_poly.lua103
-rw-r--r--apps/plugins/lua/include_lua/draw_text.lua121
-rw-r--r--apps/plugins/lua/include_lua/image.lua184
-rw-r--r--apps/plugins/lua/include_lua/image_save.lua215
-rw-r--r--apps/plugins/lua/lua.make4
-rwxr-xr-xapps/plugins/lua_scripts/rlimg.lua919
8 files changed, 1464 insertions, 393 deletions
diff --git a/apps/plugins/lua/include_lua/draw.lua b/apps/plugins/lua/include_lua/draw.lua
index 0ee3e93d75..7208b63efb 100644
--- a/apps/plugins/lua/include_lua/draw.lua
+++ b/apps/plugins/lua/include_lua/draw.lua
@@ -29,7 +29,6 @@
_draw.ellipse_filled
_draw.ellipse_rect_filled
_draw.ellipse_rect
- _draw.flood_fill
_draw.hline
_draw.image
_draw.line
@@ -39,7 +38,6 @@
_draw.rect_filled
_draw.rounded_rect
_draw.rounded_rect_filled
- _draw.text
_draw.vline
]]
@@ -56,21 +54,17 @@ local _draw = {} do
setmetatable(_draw, rocklib_image)
-- 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 _abs = math.abs
+
local _clear = rocklib_image.clear
local _copy = rocklib_image.copy
local _ellipse = rocklib_image.ellipse
local _get = rocklib_image.get
local _line = rocklib_image.line
- local _marshal = rocklib_image.marshal
local _min = math.min
local _newimg = rb.new_image
- local _points = rocklib_image.points
-- line
_draw.line = function(img, x1, y1, x2, y2, color, bClip)
@@ -87,33 +81,22 @@ local _draw = {} do
_line(img, 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
-
+ -- draws a non-filled rect based on points in t-points
+ local function polyrect(img, x, y, t_points, color, bClip)
+ local pt_first_last = t_points[1]
+ local pt1, pt2
+ for i = 1, 4, 1 do
+ pt1 = t_points[i]
+ pt2 = t_points[i + 1] or pt_first_last-- first and last point
_line(img, 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
- polyline(img, x, y, {{0, 0}, {width, 0}, {width, height}, {0, height}}, color, true, bClip)
+ polyrect(img, x, y, {{0, 0}, {width, 0}, {width, height}, {0, height}}, color, bClip)
end
@@ -240,190 +223,9 @@ local _draw = {} do
_copy(dst, src, x, y, 1, 1, _NIL, _NIL, bClip)
end
- -- floods an area of targetclr with fillclr x, y specifies the start seed
- _draw.flood_fill = function(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 ~= _get(img, 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 function check_ns(val, x, y)
- if targetclr == val then
- y = y - 1
- if targetclr == _get(img, x, y, true) then -- north
- qtail = qtail + 2
- qpt[qtail - 1] = x
- qpt[qtail] = y
- end
- y = y + 2
- if targetclr == _get(img, x, y, true) then -- south
- qtail = qtail + 2
- qpt[qtail - 1] = x
- qpt[qtail] = y
- end
- return fillclr
- end
- return _NIL -- signal marshal to stop
- end
-
- local function seed_pt(x, y)
- -- should never hit max but make sure not to end early
- for qhead = 2, 0x40000000, 2 do
-
- if targetclr == _get(img, x, y, true) then
- _marshal(img, x, y, 1, y, _NIL, _NIL, true, check_ns) -- west
- _marshal(img, x + 1, y, max_w, y, _NIL, _NIL, true, check_ns) -- east
- 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
- _draw.polygon = function(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 = _abs(x_max) + _abs(x_min)
- h = _abs(y_max) + _abs(y_min)
- x_min = x_min - 2 -- leave a border to use flood_fill
- y_min = y_min - 2
-
- local fill_img = _newimg(w + 3, h + 3)
- _clear(fill_img, 0x1)
-
- 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
- _line(fill_img, pt1[1] - x_min, pt1[2] - y_min,
- pt2[1]- x_min, pt2[2] - y_min, 0)
-
- end
- _draw.flood_fill(fill_img, fill_img:width(), fill_img:height() , 0x1, 0x0)
- _copy(img, 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
- _draw.text = function(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 = 0x1, bg_pattern = 0}
-
- if rb.LCD_DEPTH == 2 then -- invert 2-bit screens
- --vp.drawmode = bit.bxor(vp.drawmode, 4)
- opts.fg_pattern = 3 - opts.fg_pattern
- opts.bg_pattern = 3 - opts.bg_pattern
- end
- rb.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 = _newimg(LCD_W, LCD_H)
- _copy(screen_img, _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()
-
- 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
- _copy(img, _LCD, x + width, y + height, _NIL, _NIL, _NIL, _NIL, false, BSAND, color)
- 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
- _copy(img, _LCD, x + width, y + height, _NIL, _NIL, _NIL, _NIL, false, BSAND, color)
- end
-
- _copy(_LCD, screen_img) -- restore screen
- rb.set_viewport() -- set viewport default
- return res, w, h
- end
-
-- expose internal functions to the outside through _draw table
_draw.hline = hline
_draw.vline = vline
- _draw.polyline = polyline
_draw.rect = rect
_draw.rounded_rect = rounded_rect
end -- _draw functions
diff --git a/apps/plugins/lua/include_lua/draw_floodfill.lua b/apps/plugins/lua/include_lua/draw_floodfill.lua
new file mode 100644
index 0000000000..0303e711f2
--- /dev/null
+++ b/apps/plugins/lua/include_lua/draw_floodfill.lua
@@ -0,0 +1,95 @@
+--[[ Lua Floodfill function
+/***************************************************************************
+ * __________ __ ___.
+ * 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.
+ *
+ ****************************************************************************/
+]]
+-- floods an area of targetclr with fillclr x, y specifies the start seed
+-- flood_fill(img, x, y, targetclr, fillclr)
+if not rb.lcd_framebuffer then rb.splash(rb.HZ, "No Support!") return nil end
+do
+
+ local rocklib_image = getmetatable(rb.lcd_framebuffer())
+ local _NIL = nil -- nil placeholder
+ local _get = rocklib_image.get
+ local _line = rocklib_image.line
+ local _marshal = rocklib_image.marshal
+
+ return function(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 ~= _get(img, 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 function check_ns(val, x, y)
+ if targetclr == val then
+ y = y - 1
+ if targetclr == _get(img, x, y, true) then -- north
+ qtail = qtail + 2
+ qpt[qtail - 1] = x
+ qpt[qtail] = y
+ end
+ y = y + 2
+ if targetclr == _get(img, x, y, true) then -- south
+ qtail = qtail + 2
+ qpt[qtail - 1] = x
+ qpt[qtail] = y
+ end
+ return fillclr
+ end
+ return _NIL -- signal marshal to stop
+ end
+
+ local function seed_pt(x, y)
+ -- should never hit max but make sure not to end early
+ for qhead = 2, 0x40000000, 2 do
+
+ if targetclr == _get(img, x, y, true) then
+ _marshal(img, x, y, 1, y, _NIL, _NIL, true, check_ns) -- west
+ _marshal(img, x + 1, y, max_w, y, _NIL, _NIL, true, check_ns) -- east
+ 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
+end
diff --git a/apps/plugins/lua/include_lua/draw_poly.lua b/apps/plugins/lua/include_lua/draw_poly.lua
new file mode 100644
index 0000000000..fd76a582b1
--- /dev/null
+++ b/apps/plugins/lua/include_lua/draw_poly.lua
@@ -0,0 +1,103 @@
+--[[ Lua Poly 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
+ _poly.polygon
+ _poly.polyline
+]]
+
+if not rb.lcd_framebuffer then rb.splash(rb.HZ, "No Support!") return nil end
+
+local _poly = {} do
+ local BSAND = 8 -- blits color to dst if src <> 0
+ local _NIL = nil -- nil placeholder
+
+ local _abs = math.abs
+ local _copy = rocklib_image.copy
+ local _line = rocklib_image.line
+ local flood_fill = require("draw_floodfill")
+
+ -- 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
+
+ _line(img, pt1[1] + x, pt1[2] + y, pt2[1] + x, pt2[2] + y, color, bClip)
+ end
+
+ end
+
+ -- draws a closed figure based on points in t_points
+ _poly.polygon = function(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 = _abs(x_max) + _abs(x_min)
+ h = _abs(y_max) + _abs(y_min)
+ x_min = x_min - 2 -- leave a border to use flood_fill
+ y_min = y_min - 2
+
+ local fill_img = _newimg(w + 3, h + 3)
+ _clear(fill_img, 0x1)
+
+ 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
+ _line(fill_img, 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() , 0x1, 0x0)
+ _copy(img, fill_img, x - 1, y - 1, _NIL, _NIL, _NIL, _NIL, bClip, BSAND, fillcolor)
+ end
+
+ polyline(img, x, y, t_points, color, true, bClip)
+ end
+
+ -- expose internal functions to the outside through _poly table
+ _poly.polyline = polyline
+end
+return _poly
diff --git a/apps/plugins/lua/include_lua/draw_text.lua b/apps/plugins/lua/include_lua/draw_text.lua
new file mode 100644
index 0000000000..3722931c2c
--- /dev/null
+++ b/apps/plugins/lua/include_lua/draw_text.lua
@@ -0,0 +1,121 @@
+--[[ Lua Draw Text function
+/***************************************************************************
+ * __________ __ ___.
+ * 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.
+ *
+ ****************************************************************************/
+]]
+-- draw text onto image if width/height are supplied text is centered
+
+if not rb.lcd_framebuffer then rb.splash(rb.HZ, "No Support!") return nil end
+
+do
+ -- Internal Constants
+ local rocklib_image = getmetatable(rb.lcd_framebuffer())
+ 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 _clear = rocklib_image.clear
+ local _copy = rocklib_image.copy
+ local _newimg = rb.new_image
+
+
+ return function(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 = 0x1, bg_pattern = 0}
+
+ if rb.LCD_DEPTH == 2 then -- invert 2-bit screens
+ --vp.drawmode = bit.bxor(vp.drawmode, 4)
+ opts.fg_pattern = 3 - opts.fg_pattern
+ opts.bg_pattern = 3 - opts.bg_pattern
+ end
+ rb.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 = _newimg(LCD_W, LCD_H)
+ local screen_img = _newimg(LCD_W, h * 2)
+ _copy(screen_img, _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()
+ _clear(_LCD, opts.bg_pattern or 0, 1, 1, LCD_W, h * 2)
+
+ 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
+ _copy(img, _LCD, x + width, y + height, _NIL, _NIL, _NIL, _NIL, false, BSAND, color)
+ x = x + wp
+ --rb.lcd_clear_display()
+ _clear(_LCD, opts.bg_pattern or 0, 1, 1, LCD_W, h * 2)
+
+ lenr = text:len()
+ end
+ else --w <= LCD_W
+ rb.lcd_putsxy(0, 0, text)
+
+ -- using the mask we made blit color into img
+ _copy(img, _LCD, x + width, y + height, _NIL, _NIL, _NIL, _NIL, false, BSAND, color)
+ end
+
+ _copy(_LCD, screen_img) -- restore screen
+ rb.set_viewport() -- set viewport default
+ return res, w, h
+ end
+end
diff --git a/apps/plugins/lua/include_lua/image.lua b/apps/plugins/lua/include_lua/image.lua
index 2b2a1ce19f..5fd452ea78 100644
--- a/apps/plugins/lua/include_lua/image.lua
+++ b/apps/plugins/lua/include_lua/image.lua
@@ -23,7 +23,6 @@
--[[ Exposed Functions
- _img.save
_img.search
_img.rotate
_img.resize
@@ -156,189 +155,6 @@ local _img = {} do
return r_img
end
- -- saves img to file: name
- _img.save = function(img, name)
- -- bmp saving derived from rockbox - screendump.c
- -- bitdepth is limited by the device
- -- eg. device displays greyscale, rgb images are saved greyscale
- local file
- local bbuffer = {} -- concat buffer for s_bytes
- local fbuffer = {} -- concat buffer for file writes, reused
-
- local function s_bytesLE(bits, value)
- -- bits must be multiples of 8 (sizeof byte)
- local byte
- local nbytes = bit.rshift(bits, 3)
- for b = 1, nbytes do
- if value > 0 then
- byte = value % 256
- value = (value - byte) / 256
- else
- byte = 0
- end
- bbuffer[b] = string.char(byte)
- end
- return table.concat(bbuffer, _NIL, 1, nbytes)
- end
-
- local function s_bytesBE(bits, value)
- -- bits must be multiples of 8 (sizeof byte)
- local byte
- local nbytes = bit.rshift(bits, 3)
- for b = nbytes, 1, -1 do
- if value > 0 then
- byte = value % 256
- value = (value - byte) / 256
- else
- byte = 0
- end
- bbuffer[b] = string.char(byte)
- end
- return table.concat(bbuffer, _NIL, 1, nbytes)
- end
-
- local cmp = {["r"] = function(c) return bit.band(bit.rshift(c, 16), 0xFF) end,
- ["g"] = function(c) return bit.band(bit.rshift(c, 08), 0xFF) end,
- ["b"] = function(c) return bit.band(c, 0xFF) end}
-
- local function bmp_color(color)
- return s_bytesLE(8, cmp.b(color))..
- s_bytesLE(8, cmp.g(color))..
- s_bytesLE(8, cmp.r(color))..
- s_bytesLE(8, 0) .. ""
- end -- c_cmp(color, c.r))
-
- local function bmp_color_mix(c1, c2, num, den)
- -- mixes c1 and c2 as ratio of numerator / denominator
- -- used 2x each save results
- local bc1, gc1, rc1 = cmp.b(c1), cmp.g(c1), cmp.r(c1)
-
- return s_bytesLE(8, cmp.b(c2) - bc1 * num / den + bc1)..
- s_bytesLE(8, cmp.g(c2) - gc1 * num / den + gc1)..
- s_bytesLE(8, cmp.r(c2) - rc1 * num / den + rc1)..
- s_bytesLE(8, 0) .. ""
- end
-
- local w, h = img:width(), img:height()
- local depth = tonumber(img:__tostring(6)) -- RLI_INFO_DEPTH = 0x6
- local format = tonumber(img:__tostring(7)) -- RLI_INFO_FORMAT = 0x7
-
- local bpp, bypl -- bits per pixel, bytes per line
- -- bypl, pad rows to a multiple of 4 bytes
- if depth <= 4 then
- bpp = 8 -- 256 color image
- bypl = (w + 3)
- elseif depth <= 16 then
- bpp = 16
- bypl = (w * 2 + 3)
- elseif depth <= 24 then
- bpp = 24
- bypl = (w * 3 + 3)
- else
- bpp = 32
- bypl = (w * 4 + 3)
- end
-
- local linebytes = bit.band(bypl, bit.bnot(3))
-
- local bytesperpixel = bit.rshift(bpp, 3)
- local headersz = 54
- local imgszpad = h * linebytes
-
- local compression, n_colors = 0, 0
- local h_ppm, v_ppm = 0x00000EC4, 0x00000EC4 --Pixels Per Meter ~ 96 dpi
-
- if depth == 16 then
- compression = 3 -- BITFIELDS
- n_colors = 3
- elseif depth <= 8 then
- n_colors = bit.lshift(1, depth)
- end
-
- headersz = headersz + (4 * n_colors)
-
- file = io.open('/' .. name, "w+") -- overwrite, rb ignores the 'b' flag
-
- if not file then
- rb.splash(rb.HZ, "Error opening /" .. name)
- return
- end
- -- create a bitmap header 'rope' with image details -- concatenated at end
- local bmpheader = fbuffer
-
- bmpheader[01] = "BM"
- bmpheader[02] = s_bytesLE(32, headersz + imgszpad)
- bmpheader[03] = "\0\0\0\0" -- WORD reserved 1 & 2
- bmpheader[04] = s_bytesLE(32, headersz) -- BITMAPCOREHEADER size
- bmpheader[05] = s_bytesLE(32, 40) -- BITMAPINFOHEADER size
-
- bmpheader[06] = s_bytesLE(32, w)
- bmpheader[07] = s_bytesLE(32, h)
- bmpheader[08] = "\1\0" -- WORD color planes ALWAYS 1
- bmpheader[09] = s_bytesLE(16, bpp) -- bits/pixel
- bmpheader[10] = s_bytesLE(32, compression)
- bmpheader[11] = s_bytesLE(32, imgszpad)
- bmpheader[12] = s_bytesLE(32, h_ppm) -- biXPelsPerMeter
- bmpheader[13] = s_bytesLE(32, v_ppm) -- biYPelsPerMeter
- bmpheader[14] = s_bytesLE(32, n_colors)
- bmpheader[15] = s_bytesLE(32, n_colors)
-
- -- Color Table (#n_colors entries)
- if depth == 1 then -- assuming positive display
- bmpheader[#bmpheader + 1] = bmp_color(0xFFFFFF)
- bmpheader[#bmpheader + 1] = bmp_color(0x0)
- elseif depth == 2 then
- bmpheader[#bmpheader + 1] = bmp_color(0xFFFFFF)
- bmpheader[#bmpheader + 1] = bmp_color_mix(0xFFFFFF, 0, 1, 3)
- bmpheader[#bmpheader + 1] = bmp_color_mix(0xFFFFFF, 0, 2, 3)
- bmpheader[#bmpheader + 1] = bmp_color(0x0)
- elseif depth == 16 then
- if format == 555 then
- -- red bitfield mask
- bmpheader[#bmpheader + 1] = s_bytesLE(32, 0x00007C00)
- -- green bitfield mask
- bmpheader[#bmpheader + 1] = s_bytesLE(32, 0x000003E0)
- -- blue bitfield mask
- bmpheader[#bmpheader + 1] = s_bytesLE(32, 0x0000001F)
- else --565
- -- red bitfield mask
- bmpheader[#bmpheader + 1] = s_bytesLE(32, 0x0000F800)
- -- green bitfield mask
- bmpheader[#bmpheader + 1] = s_bytesLE(32, 0x000007E0)
- -- blue bitfield mask
- bmpheader[#bmpheader + 1] = s_bytesLE(32, 0x0000001F)
- end
- end
-
- file:write(table.concat(fbuffer))-- write the header to the file now
- for i=1, #fbuffer do fbuffer[i] = _NIL end -- reuse table
-
- local imgdata = fbuffer
- -- pad rows to a multiple of 4 bytes
- local bytesleft = linebytes - (bytesperpixel * w)
- local t_data = {}
- local fs_bytes_E = s_bytesLE -- default save in Little Endian
-
- if format == 3553 then -- RGB565SWAPPED
- fs_bytes_E = s_bytesBE -- Saves in Big Endian
- end
-
- -- Bitmap lines start at bottom unless biHeight is negative
- for point in _points(img, 1, h, w + bytesleft, 1) do
- imgdata[#imgdata + 1] = fs_bytes_E(bpp, point or 0)
-
- if #fbuffer >= 31 then -- buffered write, increase # for performance
- file:write(table.concat(fbuffer))
- for i=1, #fbuffer do fbuffer[i] = _NIL end -- reuse table
- end
-
- end
- file:write(table.concat(fbuffer)) --write leftovers to file
- fbuffer = _NIL
-
- file:close()
- end -- save(img, name)
-
--searches an image for target color
_img.search = function(img, x1, y1, x2, y2, targetclr, variation, stepx, stepy)
diff --git a/apps/plugins/lua/include_lua/image_save.lua b/apps/plugins/lua/include_lua/image_save.lua
new file mode 100644
index 0000000000..4735af46d7
--- /dev/null
+++ b/apps/plugins/lua/include_lua/image_save.lua
@@ -0,0 +1,215 @@
+--[[ Lua Image save
+/***************************************************************************
+ * __________ __ ___.
+ * 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.
+ *
+ ****************************************************************************/
+]]
+-- save(img, path/name)
+-- bmp saving derived from rockbox - screendump.c
+-- bitdepth is limited by the device
+-- eg. device displays greyscale, rgb images are saved greyscale
+if not rb.lcd_framebuffer then rb.splash(rb.HZ, "No Support!") return nil end
+
+do
+ local rocklib_image = getmetatable(rb.lcd_framebuffer())
+
+ -- internal constants
+ local _NIL = nil -- _NIL placeholder
+ local _points = rocklib_image.points
+
+ -- saves img to file: name
+ return function(img, name)
+ local file
+ local bbuffer = {} -- concat buffer for s_bytes
+ local fbuffer = {} -- concat buffer for file writes, reused
+
+ local function s_bytesLE(bits, value)
+ -- bits must be multiples of 8 (sizeof byte)
+ local byte
+ local nbytes = bit.rshift(bits, 3)
+ for b = 1, nbytes do
+ if value > 0 then
+ byte = value % 256
+ value = (value - byte) / 256
+ else
+ byte = 0
+ end
+ bbuffer[b] = string.char(byte)
+ end
+ return table.concat(bbuffer, _NIL, 1, nbytes)
+ end
+
+ local function s_bytesBE(bits, value)
+ -- bits must be multiples of 8 (sizeof byte)
+ local byte
+ local nbytes = bit.rshift(bits, 3)
+ for b = nbytes, 1, -1 do
+ if value > 0 then
+ byte = value % 256
+ value = (value - byte) / 256
+ else
+ byte = 0
+ end
+ bbuffer[b] = string.char(byte)
+ end
+ return table.concat(bbuffer, _NIL, 1, nbytes)
+ end
+
+ local cmp = {["r"] = function(c) return bit.band(bit.rshift(c, 16), 0xFF) end,
+ ["g"] = function(c) return bit.band(bit.rshift(c, 08), 0xFF) end,
+ ["b"] = function(c) return bit.band(c, 0xFF) end}
+
+ local function bmp_color(color)
+ return s_bytesLE(8, cmp.b(color))..
+ s_bytesLE(8, cmp.g(color))..
+ s_bytesLE(8, cmp.r(color))..
+ s_bytesLE(8, 0) .. ""
+ end -- c_cmp(color, c.r))
+
+ local function bmp_color_mix(c1, c2, num, den)
+ -- mixes c1 and c2 as ratio of numerator / denominator
+ -- used 2x each save results
+ local bc1, gc1, rc1 = cmp.b(c1), cmp.g(c1), cmp.r(c1)
+
+ return s_bytesLE(8, cmp.b(c2) - bc1 * num / den + bc1)..
+ s_bytesLE(8, cmp.g(c2) - gc1 * num / den + gc1)..
+ s_bytesLE(8, cmp.r(c2) - rc1 * num / den + rc1)..
+ s_bytesLE(8, 0) .. ""
+ end
+
+ local w, h = img:width(), img:height()
+ local depth = tonumber(img:__tostring(6)) -- RLI_INFO_DEPTH = 0x6
+ local format = tonumber(img:__tostring(7)) -- RLI_INFO_FORMAT = 0x7
+
+ local bpp, bypl -- bits per pixel, bytes per line
+ -- bypl, pad rows to a multiple of 4 bytes
+ if depth <= 4 then
+ bpp = 8 -- 256 color image
+ bypl = (w + 3)
+ elseif depth <= 16 then
+ bpp = 16
+ bypl = (w * 2 + 3)
+ elseif depth <= 24 then
+ bpp = 24
+ bypl = (w * 3 + 3)
+ else
+ bpp = 32
+ bypl = (w * 4 + 3)
+ end
+
+ local linebytes = bit.band(bypl, bit.bnot(3))
+
+ local bytesperpixel = bit.rshift(bpp, 3)
+ local headersz = 54
+ local imgszpad = h * linebytes
+
+ local compression, n_colors = 0, 0
+ local h_ppm, v_ppm = 0x00000EC4, 0x00000EC4 --Pixels Per Meter ~ 96 dpi
+
+ if depth == 16 then
+ compression = 3 -- BITFIELDS
+ n_colors = 3
+ elseif depth <= 8 then
+ n_colors = bit.lshift(1, depth)
+ end
+
+ headersz = headersz + (4 * n_colors)
+
+ file = io.open('/' .. name, "w+") -- overwrite, rb ignores the 'b' flag
+
+ if not file then
+ rb.splash(rb.HZ, "Error opening /" .. name)
+ return
+ end
+ -- create a bitmap header 'rope' with image details -- concatenated at end
+ local bmpheader = fbuffer
+
+ bmpheader[01] = "BM"
+ bmpheader[02] = s_bytesLE(32, headersz + imgszpad)
+ bmpheader[03] = "\0\0\0\0" -- WORD reserved 1 & 2
+ bmpheader[04] = s_bytesLE(32, headersz) -- BITMAPCOREHEADER size
+ bmpheader[05] = s_bytesLE(32, 40) -- BITMAPINFOHEADER size
+
+ bmpheader[06] = s_bytesLE(32, w)
+ bmpheader[07] = s_bytesLE(32, h)
+ bmpheader[08] = "\1\0" -- WORD color planes ALWAYS 1
+ bmpheader[09] = s_bytesLE(16, bpp) -- bits/pixel
+ bmpheader[10] = s_bytesLE(32, compression)
+ bmpheader[11] = s_bytesLE(32, imgszpad)
+ bmpheader[12] = s_bytesLE(32, h_ppm) -- biXPelsPerMeter
+ bmpheader[13] = s_bytesLE(32, v_ppm) -- biYPelsPerMeter
+ bmpheader[14] = s_bytesLE(32, n_colors)
+ bmpheader[15] = s_bytesLE(32, n_colors)
+
+ -- Color Table (#n_colors entries)
+ if depth == 1 then -- assuming positive display
+ bmpheader[#bmpheader + 1] = bmp_color(0xFFFFFF)
+ bmpheader[#bmpheader + 1] = bmp_color(0x0)
+ elseif depth == 2 then
+ bmpheader[#bmpheader + 1] = bmp_color(0xFFFFFF)
+ bmpheader[#bmpheader + 1] = bmp_color_mix(0xFFFFFF, 0, 1, 3)
+ bmpheader[#bmpheader + 1] = bmp_color_mix(0xFFFFFF, 0, 2, 3)
+ bmpheader[#bmpheader + 1] = bmp_color(0x0)
+ elseif depth == 16 then
+ if format == 555 then
+ -- red bitfield mask
+ bmpheader[#bmpheader + 1] = s_bytesLE(32, 0x00007C00)
+ -- green bitfield mask
+ bmpheader[#bmpheader + 1] = s_bytesLE(32, 0x000003E0)
+ -- blue bitfield mask
+ bmpheader[#bmpheader + 1] = s_bytesLE(32, 0x0000001F)
+ else --565
+ -- red bitfield mask
+ bmpheader[#bmpheader + 1] = s_bytesLE(32, 0x0000F800)
+ -- green bitfield mask
+ bmpheader[#bmpheader + 1] = s_bytesLE(32, 0x000007E0)
+ -- blue bitfield mask
+ bmpheader[#bmpheader + 1] = s_bytesLE(32, 0x0000001F)
+ end
+ end
+
+ file:write(table.concat(fbuffer))-- write the header to the file now
+ for i=1, #fbuffer do fbuffer[i] = _NIL end -- reuse table
+
+ local imgdata = fbuffer
+ -- pad rows to a multiple of 4 bytes
+ local bytesleft = linebytes - (bytesperpixel * w)
+ local t_data = {}
+ local fs_bytes_E = s_bytesLE -- default save in Little Endian
+
+ if format == 3553 then -- RGB565SWAPPED
+ fs_bytes_E = s_bytesBE -- Saves in Big Endian
+ end
+
+ -- Bitmap lines start at bottom unless biHeight is negative
+ for point in _points(img, 1, h, w + bytesleft, 1) do
+ imgdata[#imgdata + 1] = fs_bytes_E(bpp, point or 0)
+
+ if #fbuffer >= 31 then -- buffered write, increase # for performance
+ file:write(table.concat(fbuffer))
+ for i=1, #fbuffer do fbuffer[i] = _NIL end -- reuse table
+ end
+
+ end
+ file:write(table.concat(fbuffer)) --write leftovers to file
+ fbuffer = _NIL
+
+ file:close()
+ end -- save(img, name)
+end
diff --git a/apps/plugins/lua/lua.make b/apps/plugins/lua/lua.make
index d5fb85afbc..388c5d74d3 100644
--- a/apps/plugins/lua/lua.make
+++ b/apps/plugins/lua/lua.make
@@ -16,8 +16,8 @@ LUA_OBJ := $(call c2obj, $(LUA_SRC))
OTHER_SRC += $(LUA_SRC)
LUA_INCLUDEDIR := $(LUA_SRCDIR)/include_lua
-LUA_INCLUDELIST := $(addprefix $(LUA_BUILDDIR)/,audio.lua blit.lua color.lua draw.lua \
- image.lua lcd.lua math_ex.lua print.lua \
+LUA_INCLUDELIST := $(addprefix $(LUA_BUILDDIR)/,audio.lua blit.lua color.lua draw.lua draw_floodfill.lua draw_poly.lua \
+ draw_text.lua image.lua image_save.lua lcd.lua math_ex.lua print.lua \
timer.lua playlist.lua pcm.lua sound.lua \
rbcompat.lua printtable.lua)
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)