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Fullscreen all apps - no more subwindow
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Thomas Farstrike
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# Initialize
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import display_driver
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import lvgl as lv
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import lvgl
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label = lvgl.label( lvgl.screen_active() )
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label.set_text( 'hi' )
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animation = lvgl.anim_t()
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animation.init()
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animation.set_var( label )
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animation.set_values( 0, 100 )
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animation.set_time( 1000 )
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animation.set_custom_exec_cb( lambda not_used, value : label.set_x( value ))
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#wait half a second before starting animation
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animation.set_delay( 500 )
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#play animation backward for 1 second after first play
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animation.set_playback_time( 1000 )
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#repeat animation infinitely
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animation.set_repeat_count( 10 )
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#animation.set_repeat_count( lvgl.ANIM_REPEAT.INFINITE )
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animation.set_repeat_delay( 500 )
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animation.start()
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******************************
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# Initialize
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import display_driver
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import lvgl as lv
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import lvgl
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#create the slow short label
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label1 = lvgl.label( lvgl.screen_active() )
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label1.set_text( 'hello 1' )
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label1.align( lvgl.ALIGN.CENTER, 0, -50 )
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anim1 = lvgl.anim_t()
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anim1.init()
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anim1.set_var( label1 )
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#anim1.set_time( lvgl.anim_speed_to_time( 20, 0, 100 ))
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anim1.set_time( 2000 )
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anim1.set_values( 0, 100 )
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anim1.set_repeat_count( 10 )
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anim1.set_repeat_delay( 2000 )
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anim1.set_custom_exec_cb( lambda not_used, value : label1.set_x( value ))
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#create the fast long label
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label2 = lvgl.label( lvgl.screen_active() )
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label2.set_text('hello 2')
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label2.align(lvgl.ALIGN.CENTER,-100,0)
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anim2 = lvgl.anim_t()
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anim2.init()
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anim2.set_var( label2 )
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#anim2.set_time( lvgl.anim_speed_to_time( 40, -100, 100 ))
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anim2.set_time( 40 * 200 )
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anim2.set_values( -100, 100 )
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anim2.set_custom_exec_cb( lambda not_used, value : label2.set_x( value ))
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anim2.set_repeat_count( 10)
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anim2.set_repeat_delay( 2000 )
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#Create the fast short label
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label3 = lvgl.label( lvgl.screen_active() )
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label3.set_text( 'hello 3' )
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label3.align( lvgl.ALIGN.CENTER, -100, 50 )
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anim3 = lvgl.anim_t()
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anim3.init()
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anim3.set_var( label3 )
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#anim3.set_time( lvgl.anim_speed_to_time( 40, -100, 0 ))
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anim3.set_time( 40 * 100)
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anim3.set_values( -100, 0)
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anim3.set_custom_exec_cb( lambda not_used, value : label3.set_x( value ))
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anim3.set_repeat_count( 10 )
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anim3.set_repeat_delay( 40 * 100 + 2000 )
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#anim3.set_repeat_delay( lvgl.anim_speed_to_time( 40, -100, 0) + 2000 )
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#lvgl.anim_speed_to_time( 1, 2, 3)
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#anim3.set_repeat_delay( 5000)
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#lvgl.anim
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anim1.start()
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anim2.start()
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anim3.start()
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******************
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# Initialize
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import display_driver
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import lvgl as lv
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import lvgl
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import lvgl
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#normal animation
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label1 = lvgl.label( lvgl.screen_active() )
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label1.set_text( 'hello 1' )
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label1.align( lvgl.ALIGN.CENTER, -70, -60 )
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anim1 = lvgl.anim_t()
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anim1.init()
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anim1.set_var( label1 )
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anim1.set_time( 1000 )
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anim1.set_values( -70, 20 )
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anim1.set_repeat_count( 100 )
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anim1.set_repeat_delay( 2000 )
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anim1.set_custom_exec_cb( lambda not_used, value : label1.set_x( value ))
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#this animation bounces the label when it ends
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label2 = lvgl.label( lvgl.screen_active() )
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label2.set_text( 'hello 2' )
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label2.align( lvgl.ALIGN.CENTER, 30, -60 )
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anim2 = lvgl.anim_t()
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anim2.init()
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anim2.set_var( label2 )
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anim2.set_time( 1000 )
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anim2.set_values( 30, 120 )
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anim2.set_custom_exec_cb( lambda not_used, value : label2.set_x( value ))
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anim2.set_repeat_count( 100)
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anim2.set_repeat_delay( 2000 )
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anim2.set_path_cb( lvgl.anim_t.path_bounce )
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#this animation goes past the end point then comes back
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label3 = lvgl.label( lvgl.screen_active() )
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label3.set_text( 'hello 3' )
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label3.align( lvgl.ALIGN.CENTER, -70, 60 )
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anim3 = lvgl.anim_t()
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anim3.init()
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anim3.set_var( label3 )
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anim3.set_time( 1000 )
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anim3.set_values( -70, 20 )
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anim3.set_custom_exec_cb( lambda not_used, value : label3.set_x( value ))
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anim3.set_repeat_count( 100 )
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anim3.set_repeat_delay( 2000 )
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anim3.set_path_cb( lvgl.anim_t.path_overshoot )
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#this animation slowly starts and then slowly ends
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label4 = lvgl.label( lvgl.screen_active() )
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label4.set_text( 'hello 4' )
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label4.align( lvgl.ALIGN.CENTER, 30, 60 )
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anim4 = lvgl.anim_t()
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anim4.init()
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anim4.set_var( label4 )
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anim4.set_time( 1000 )
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anim4.set_values( 30, 120 )
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anim4.set_custom_exec_cb( lambda not_used, value : label4.set_x( value ))
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anim4.set_repeat_count( 100 )
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anim4.set_repeat_delay( 2000 )
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anim4.set_path_cb( lvgl.anim_t.path_ease_in_out )
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anim1.start()
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anim2.start()
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anim3.start()
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anim4.start()
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********************
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# Initialize
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import display_driver
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import lvgl as lv
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import lvgl
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button = lvgl.button( lvgl.screen_active() )
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button.set_size( 50, 20 )
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button.center()
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anim1 = lvgl.anim_t()
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anim1.init()
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anim1.set_var( button )
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anim1.set_time( 1000 )
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anim1.set_values( -100, 100 )
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anim1.set_custom_exec_cb( lambda not_used, value : button.set_x( value ))
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anim2 = lvgl.anim_t()
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anim2.init()
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anim2.set_var( button )
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anim2.set_time( 150 )
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anim2.set_values( 100, 30 )
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anim2.set_custom_exec_cb( lambda not_used, value : button.set_x( value ))
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anim3 = lvgl.anim_t()
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anim3.init()
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anim3.set_var( button )
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anim3.set_time( 2000 )
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anim3.set_values( 30, -100 )
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anim3.set_custom_exec_cb( lambda not_used, value : button.set_x( value ))
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time = lvgl.anim_timeline_create()
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# somehow this doesn't work:
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#lvgl.anim_timeline_add( time, 0, anim1 )
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#lvgl.anim_timeline_add( time, 1000, anim2 )
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#lvgl.anim_timeline_add( time, 1150, anim3 )
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#lvgl.anim_timeline_start( time )
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@@ -0,0 +1,80 @@
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import ustruct
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import os
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#os.mkdir("/flash")
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import lvgl as lv
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import micropython
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import ustruct
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# Capture the screen to a buffer
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snapshot_buf = lv.snapshot_take(lv.screen_active(), lv.COLOR_FORMAT.NATIVE)
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if snapshot_buf is None:
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print("Failed to capture snapshot")
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else:
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print("Snapshot captured successfully")
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# Assuming snapshot_buf is from lv.snapshot_take(scr, lv.COLOR_FORMAT.NATIVE)
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if snapshot_buf:
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# Verify metadata
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print("Width:", snapshot_buf.header.w) # Should be 320
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print("Height:", snapshot_buf.header.h) # Should be 240
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print("Data size:", snapshot_buf.data_size) # Should be 153600
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# Get the raw buffer pointer
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data_ptr = snapshot_buf.data
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data_size = snapshot_buf.data_size
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# Use memoryview to access the full buffer
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try:
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# Create a memoryview of the C buffer
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buffer = memoryview(data_ptr)[:data_size]
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print("Buffer length:", len(buffer)) # Should be 153600
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# Save to flash storage
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with open("/flash/snapshot.bin", "wb") as f:
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f.write(buffer)
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print("Snapshot saved to /flash/snapshot.bin")
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except Exception as e:
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print("Error accessing or saving buffer:", e)
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# Free the snapshot to avoid memory leaks
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lv.snapshot_free(snapshot_buf)
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else:
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print("Snapshot capture failed")
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# Assuming snapshot_buf is the lv_img_dsc_t from lv.snapshot_take
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if snapshot_buf:
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# Get image data and metadata
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img_data = snapshot_buf.data # Raw buffer (bytearray)
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img_width = snapshot_buf.header.w
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img_height = snapshot_buf.header.h
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img_data_size = snapshot_buf.data_size
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# Save to flash storage
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try:
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with open("/flash/snapshot.bin", "wb") as f:
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f.write(img_data, img_data_size)
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print("Snapshot saved to /flash/snapshot.bin")
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except OSError as e:
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print("Failed to save snapshot:", e)
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else:
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print("No snapshot to save")
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if False:
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img_data = snapshot_buf.data
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img_width = snapshot_buf.header.w
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img_height = snapshot_buf.header.h
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img_data_size = snapshot_buf.data_size
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color_format = lv.COLOR_FORMAT.NATIVE # Store format for reference
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try:
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with open("/flash/snapshot.bin", "wb") as f:
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# Write header: width (4 bytes), height (4 bytes), format (4 bytes)
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f.write(ustruct.pack("III", img_width, img_height, color_format))
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# Write image data
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f.write(img_data, img_data_size)
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print("Snapshot with header saved to /flash/snapshot.bin")
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except OSError as e:
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print("Failed to save snapshot:", e)
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