Max Gramser
60 lines
2.0 KiB
C++
60 lines
2.0 KiB
C++
#pragma once
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#include "lvgl.h"
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#include "esphome/core/log.h"
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// On-demand 240x240 diagnostic image of LVGL's rendered screen. Nothing is
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// allocated or streamed during normal use. The RGB display signal itself
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// still needs a physical visual check.
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namespace guition {
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inline bool check_geometry(lv_obj_t *obj) {
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if (lv_obj_has_flag(obj, LV_OBJ_FLAG_HIDDEN)) return true;
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bool ok = true;
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lv_area_t area;
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lv_obj_get_coords(obj, &area);
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if (lv_obj_has_flag(obj, LV_OBJ_FLAG_CLICKABLE) &&
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(area.x1 < 0 || area.y1 < 0 || area.x2 >= 480 || area.y2 >= 480)) {
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ESP_LOGE("ui_test", "GEOMETRY FAIL clickable=(%d,%d)-(%d,%d)",
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area.x1, area.y1, area.x2, area.y2);
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ok = false;
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}
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for (uint32_t i = 0; i < lv_obj_get_child_count(obj); ++i)
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ok = check_geometry(lv_obj_get_child(obj, i)) && ok;
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return ok;
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}
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#if LV_USE_SNAPSHOT
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inline lv_draw_buf_t *snapshot = nullptr;
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inline int snapshot_row = 0;
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inline void snapshot_begin() {
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if (snapshot) lv_draw_buf_destroy(snapshot);
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snapshot = lv_snapshot_take(lv_screen_active(), LV_COLOR_FORMAT_RGB565);
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snapshot_row = 0;
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if (!snapshot || snapshot->header.w != 480 || snapshot->header.h != 480) {
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if (snapshot) lv_draw_buf_destroy(snapshot);
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snapshot = nullptr;
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ESP_LOGE("ui_image", "IMAGE FAIL allocation/dimensions");
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return;
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}
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ESP_LOGI("ui_image", "IMAGE BEGIN 240 240");
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}
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inline void snapshot_next_row() {
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if (!snapshot) return;
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const auto *row = reinterpret_cast<const uint16_t *>(
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snapshot->data + snapshot_row * 2 * snapshot->header.stride);
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static constexpr char hex[] = "0123456789abcdef";
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char line[961];
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for (int x = 0; x < 240; ++x) {
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uint16_t pixel = row[x * 2];
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for (int digit = 0; digit < 4; ++digit)
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line[x * 4 + digit] = hex[(pixel >> (12 - digit * 4)) & 15];
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}
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line[960] = 0;
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ESP_LOGI("ui_image", "ROW %03d %s", snapshot_row, line);
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if (++snapshot_row == 240) {
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lv_draw_buf_destroy(snapshot);
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snapshot = nullptr;
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ESP_LOGI("ui_image", "IMAGE COMPLETE");
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}
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}
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#endif
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} // namespace guition
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