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Fix helloworld.lua on grayscale targets

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21290 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Maurus Cuelenaere 2009-06-15 13:30:03 +00:00
parent 33c87e08e5
commit e55bdff350
1 changed files with 18 additions and 8 deletions
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26
apps/plugins/helloworld.lua
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@ -32,7 +32,12 @@ end
-- Helper function which draws a transparent image at the center of the screen -- Helper function which draws a transparent image at the center of the screen
function draw_image(img) function draw_image(img)
local x, y = (rb.LCD_WIDTH - img:width()) / 2, (rb.LCD_HEIGHT - img:height()) / 2 local x, y = (rb.LCD_WIDTH - img:width()) / 2, (rb.LCD_HEIGHT - img:height()) / 2
rb.lcd_bitmap_transparent_part(img, 0, 0, img:width(), x, y, img:width(), img:height())
local func = rb.lcd_bitmap_transparent_part
if(func == nil) then
func = rb.lcd_bitmap_part -- Fallback version for mono targets
end
func(img, 0, 0, img:width(), x, y, img:width(), img:height())
rb.lcd_update() rb.lcd_update()
end end
@ -99,18 +104,23 @@ rb.lcd_clear_display()
rb.lcd_drawline(0, 0, rb.LCD_WIDTH, rb.LCD_HEIGHT) rb.lcd_drawline(0, 0, rb.LCD_WIDTH, rb.LCD_HEIGHT)
rb.lcd_drawline(rb.LCD_WIDTH, 0, 0, rb.LCD_HEIGHT) rb.lcd_drawline(rb.LCD_WIDTH, 0, 0, rb.LCD_HEIGHT)
local rectangle = rb.new_image(10, 15) -- Create a new image with width 10 and height 15 if(rb.lcd_rgbpack ~= nil) then -- Only do this when we're on a color target, i.e. when LCD_RGBPACK is available
for i=1, 10 do local rectangle = rb.new_image(10, 15) -- Create a new image with width 10 and height 15
for j=1, 15 do for i=1, 10 do
rectangle:set(i, j, rb.lcd_rgbpack(200, i*20, j*20)) -- Set the pixel at position i, j to the specified color for j=1, 15 do
rectangle:set(i, j, rb.lcd_rgbpack(200, i*20, j*20)) -- Set the pixel at position i, j to the specified color
end
end end
end
-- rb.lcd_bitmap_part(src, src_x, src_y, stride, x, y, width, height) -- rb.lcd_bitmap_part(src, src_x, src_y, stride, x, y, width, height)
rb.lcd_bitmap_part(rectangle, 0, 0, 10, rb.LCD_WIDTH/2-5, rb.LCD_HEIGHT/10-1, 10, 10) -- Draws our rectangle at the top-center of the screen rb.lcd_bitmap_part(rectangle, 0, 0, 10, rb.LCD_WIDTH/2-5, rb.LCD_HEIGHT/10-1, 10, 10) -- Draws our rectangle at the top-center of the screen
end
-- Load a BMP file in the variable backdrop -- Load a BMP file in the variable backdrop
local backdrop = rb.read_bmp_file("/.rockbox/icons/tango_small_viewers.bmp") -- This image should always be present? local backdrop = rb.read_bmp_file("/.rockbox/icons/tango_small_viewers.bmp") -- This image should always be present?
if(backdrop == nil) then
backdrop = rb.read_bmp_file("/.rockbox/icons/tango_small_viewers_mono.bmp") -- Try using the mono version
end
-- Draws the image using our own draw_image() function; see up -- Draws the image using our own draw_image() function; see up
draw_image(backdrop) draw_image(backdrop)