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1332358ee7
Firmware: add screenshotWidth()/screenshotHeight() virtual pair to DisplayDriver (default: width()/height()). GxEPDDisplay overrides to return display.width()/display.height() — the GxEPD2-reported values that use WIDTH_VISIBLE (e.g. 122 for GxEPD2_213_B74), not the full physical WIDTH stored in DisplayDriver (128). MyMesh uses these instead of display->width()/height() for the screenshot header bytes. Result for GxEPD2_213_B74 + DISPLAY_ROTATION=1: header was 250×128 → now 250×122 (correct visible canvas) Python decoder (tools/screenshot.py): - Remove hardcoded EINK_PHYS_WIDTH=128 / EINK_VISIBLE_W=122 constants. - Derive phys_stride from buffer_size / log_width (works for any panel). - Fix phys_x formula: was (EINK_PHYS_WIDTH-1-ly = 127-ly), now (vis_w-1-ly = log_height-1-ly = 121-ly for 213_B74). Old formula addressed invisible columns 122-127; new formula correctly maps logical rows 0..121 to visible physical columns 121..0. - vis_w = log_height (no hardcoded trim; header now carries correct value). This also works for square panels (e.g. 128×128 where WIDTH=WIDTH_VISIBLE): header will carry 128×128, decoder produces a correct 128×128 image. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>