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Updated examples to work with smaller screen better #6

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Merged
merged 9 commits into from
Mar 1, 2019
Merged

Updated examples to work with smaller screen better #6

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f0246bd
Updated examples to work with smaller screen better
Feb 25, 2019
498676b
Fixed color in BMP example
Feb 25, 2019
e9d7a49
Made 16-bit color handling a little better
Feb 25, 2019
3e79ae2
Linting
Feb 25, 2019
38e2d8e
More Linting
Feb 25, 2019
8355d8f
Got 16-bit color working perfect
Feb 26, 2019
35d8692
Now it handles 32-bit color by discarding alpha channel
Feb 26, 2019
a8f36b9
Simplified 16-bit color handling
Feb 26, 2019
89ec2b0
Changed 16-bit color function name
Mar 1, 2019
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18 changes: 12 additions & 6 deletions examples/ra8875_bmptest.py
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,9 @@
display.init()
display.fill(WHITE)

def convert_555_to_565(rgb):
return (rgb & 0x7FE0) << 1 | 0x20 | rgb & 0x001F

class BMP(object):
def __init__(self, filename):
self.filename = filename
Expand All @@ -35,7 +38,8 @@ def __init__(self, filename):
self.data_size = 0
self.bpp = 0
self.width = 0
self.height=0
self.height = 0
self.read_header()

def read_header(self):
if self.colors:
Expand All @@ -54,7 +58,6 @@ def read_header(self):
self.colors = int.from_bytes(f.read(4), 'little')

def draw(self, disp, x=0, y=0):
self.read_header()
print("{:d}x{:d} image".format(self.width, self.height))
print("{:d}-bit encoding detected".format(self.bpp))
line = 0
Expand All @@ -72,12 +75,15 @@ def draw(self, disp, x=0, y=0):
if (line_size-i) < self.bpp//8:
break
if self.bpp == 16:
color = line_data[i] << 8 | line_data[i+1]
if self.bpp == 24:
color = color565(line_data[i], line_data[i+1], line_data[i+2])
color = convert_555_to_565(line_data[i] | line_data[i+1] << 8)
if self.bpp == 24 or self.bpp == 32:
color = color565(line_data[i+2], line_data[i+1], line_data[i])
current_line_data = current_line_data + struct.pack(">H", color)
disp.setxy(x, self.height - line + y)
disp.push_pixels(current_line_data)
disp.set_window(0, 0, disp.width, disp.height)

BMP("/ra8875_blinka.bmp").draw(display, 287, 127)
bitmap = BMP("/ra8875_blinka.bmp")
x_position = (display.width // 2) - (bitmap.width // 2)
y_position = (display.height // 2) - (bitmap.height // 2)
bitmap.draw(display, x_position, y_position)
6 changes: 4 additions & 2 deletions examples/ra8875_simpletest.py
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Original file line number Diff line number Diff line change
Expand Up @@ -59,7 +59,9 @@
display.curve(50, 100, 80, 40, 2, BLACK)
display.fill_curve(50, 100, 78, 38, 2, WHITE)

display.txt_set_cursor(240, 240)
display.txt_set_cursor(display.width // 2 - 200, display.height // 2 - 20)
print(display.width)
print(display.height)
display.txt_trans(WHITE)
display.txt_size(2)
testvar = 99
Expand All @@ -77,7 +79,7 @@
coords = display.touch_read()
display.fill_circle(int(coords[0]/x_scale), int(coords[1]/y_scale), 4, MAGENTA)
display.txt_color(WHITE, BLACK)
display.txt_set_cursor(240, 240)
display.txt_set_cursor(display.width // 2 - 220, display.height // 2 - 20)
display.txt_size(2)
display.txt_write("Position (" + str(int(coords[0]/x_scale)) + ", " +
str(int(coords[1]/y_scale)) + ")")