mirror of
https://github.com/DarkFlippers/unleashed-firmware
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248 lines
10 KiB
C
248 lines
10 KiB
C
/* Copyright (C) 2022-2023 Salvatore Sanfilippo -- All Rights Reserved
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* See the LICENSE file for information about the license. */
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#include "app.h"
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extern ProtoViewDecoder* Decoders[]; // Defined in signal.c.
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/* Our view private data. */
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#define USER_VALUE_LEN 64
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typedef struct {
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ProtoViewDecoder* decoder; /* Decoder we are using to create a
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message. */
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uint32_t cur_decoder; /* Decoder index when we are yet selecting
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a decoder. Used when decoder is NULL. */
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ProtoViewFieldSet* fieldset; /* The fields to populate. */
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uint32_t cur_field; /* Field we are editing right now. This
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is the index inside the 'fieldset'
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fields. */
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char* user_value; /* Keyboard input to replace the current
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field value goes here. */
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} BuildViewPrivData;
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/* Not all the decoders support message bulding, so we can't just
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* increment / decrement the cur_decoder index here. */
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static void select_next_decoder(ProtoViewApp* app) {
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BuildViewPrivData* privdata = app->view_privdata;
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do {
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privdata->cur_decoder++;
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if(Decoders[privdata->cur_decoder] == NULL) privdata->cur_decoder = 0;
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} while(Decoders[privdata->cur_decoder]->get_fields == NULL);
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}
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/* Like select_next_decoder() but goes backward. */
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static void select_prev_decoder(ProtoViewApp* app) {
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BuildViewPrivData* privdata = app->view_privdata;
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do {
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if(privdata->cur_decoder == 0) {
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/* Go one after the last one to wrap around. */
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while(Decoders[privdata->cur_decoder]) privdata->cur_decoder++;
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}
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privdata->cur_decoder--;
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} while(Decoders[privdata->cur_decoder]->get_fields == NULL);
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}
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/* Render the view to select the decoder, among the ones that
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* support message building. */
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static void render_view_select_decoder(Canvas* const canvas, ProtoViewApp* app) {
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BuildViewPrivData* privdata = app->view_privdata;
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canvas_set_font(canvas, FontPrimary);
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canvas_draw_str(canvas, 0, 9, "Signal creator");
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canvas_set_font(canvas, FontSecondary);
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canvas_draw_str(canvas, 0, 19, "up/down: select, ok: choose");
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canvas_set_font(canvas, FontPrimary);
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canvas_draw_str_aligned(
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canvas, 64, 38, AlignCenter, AlignCenter, Decoders[privdata->cur_decoder]->name);
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}
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/* Render the view that allows the user to populate the fields needed
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* for the selected decoder to build a message. */
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static void render_view_set_fields(Canvas* const canvas, ProtoViewApp* app) {
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BuildViewPrivData* privdata = app->view_privdata;
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char buf[32];
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snprintf(
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buf,
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sizeof(buf),
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"%s field %d/%d",
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privdata->decoder->name,
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(int)privdata->cur_field + 1,
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(int)privdata->fieldset->numfields);
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canvas_set_color(canvas, ColorBlack);
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canvas_draw_box(canvas, 0, 0, 128, 21);
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canvas_set_color(canvas, ColorWhite);
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canvas_set_font(canvas, FontPrimary);
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canvas_draw_str(canvas, 1, 9, buf);
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canvas_set_font(canvas, FontSecondary);
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canvas_draw_str(canvas, 1, 19, "up/down: next field, ok: edit");
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/* Write the field name, type, current content. */
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canvas_set_color(canvas, ColorBlack);
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ProtoViewField* field = privdata->fieldset->fields[privdata->cur_field];
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snprintf(
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buf, sizeof(buf), "%s %s:%d", field->name, field_get_type_name(field), (int)field->len);
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buf[0] = toupper(buf[0]);
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canvas_set_font(canvas, FontPrimary);
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canvas_draw_str_aligned(canvas, 64, 30, AlignCenter, AlignCenter, buf);
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canvas_set_font(canvas, FontSecondary);
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/* Render the current value between "" */
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unsigned int written = (unsigned int)field_to_string(buf + 1, sizeof(buf) - 1, field);
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buf[0] = '"';
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if(written + 3 < sizeof(buf)) memcpy(buf + written + 1, "\"\x00", 2);
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canvas_draw_str_aligned(canvas, 63, 45, AlignCenter, AlignCenter, buf);
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/* Footer instructions. */
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canvas_draw_str(canvas, 0, 62, "Long ok: create, < > incr/decr");
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}
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/* Render the build message view. */
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void render_view_build_message(Canvas* const canvas, ProtoViewApp* app) {
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BuildViewPrivData* privdata = app->view_privdata;
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if(privdata->decoder)
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render_view_set_fields(canvas, app);
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else
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render_view_select_decoder(canvas, app);
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}
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/* Handle input for the decoder selection. */
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static void process_input_select_decoder(ProtoViewApp* app, InputEvent input) {
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BuildViewPrivData* privdata = app->view_privdata;
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if(input.type == InputTypeShort) {
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if(input.key == InputKeyOk) {
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privdata->decoder = Decoders[privdata->cur_decoder];
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privdata->fieldset = fieldset_new();
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privdata->decoder->get_fields(privdata->fieldset);
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/* If the currently decoded message was produced with the
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* same decoder the user selected, let's populate the
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* defaults with the current values. So the user will
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* actaully edit the current message. */
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if(app->signal_decoded && app->msg_info->decoder == privdata->decoder) {
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fieldset_copy_matching_fields(privdata->fieldset, app->msg_info->fieldset);
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}
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/* Now we use the subview system in order to protect the
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message editing mode from accidental < or > presses.
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Since we are technically into a subview now, we'll have
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control of < and >. */
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InputEvent ii = {.type = InputTypePress, .key = InputKeyDown};
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ui_process_subview_updown(app, ii, 2);
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} else if(input.key == InputKeyDown) {
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select_next_decoder(app);
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} else if(input.key == InputKeyUp) {
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select_prev_decoder(app);
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}
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}
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}
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/* Called after the user typed the new field value in the keyboard.
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* Let's save it and remove the keyboard view. */
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static void text_input_done_callback(void* context) {
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ProtoViewApp* app = context;
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BuildViewPrivData* privdata = app->view_privdata;
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if(field_set_from_string(
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privdata->fieldset->fields[privdata->cur_field],
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privdata->user_value,
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strlen(privdata->user_value)) == false) {
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ui_show_alert(app, "Invalid value", 1500);
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}
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free(privdata->user_value);
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privdata->user_value = NULL;
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ui_dismiss_keyboard(app);
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}
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/* Handles the effects of < and > keys in field editing mode.
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* Instead of force the user to enter the text input mode, delete
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* the old value, enter the one, we allow to increment and
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* decrement the current field in a much simpler way.
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*
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* The current filed is changed by 'incr' amount. */
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static bool increment_current_field(ProtoViewApp* app, int incr) {
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BuildViewPrivData* privdata = app->view_privdata;
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ProtoViewFieldSet* fs = privdata->fieldset;
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ProtoViewField* f = fs->fields[privdata->cur_field];
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return field_incr_value(f, incr);
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}
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/* Handle input for fields editing mode. */
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static void process_input_set_fields(ProtoViewApp* app, InputEvent input) {
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BuildViewPrivData* privdata = app->view_privdata;
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ProtoViewFieldSet* fs = privdata->fieldset;
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if(input.type == InputTypeShort && input.key == InputKeyOk) {
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/* Show the keyboard to let the user type the new
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* value. */
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if(privdata->user_value == NULL) privdata->user_value = malloc(USER_VALUE_LEN);
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field_to_string(privdata->user_value, USER_VALUE_LEN, fs->fields[privdata->cur_field]);
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ui_show_keyboard(app, privdata->user_value, USER_VALUE_LEN, text_input_done_callback);
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} else if(input.type == InputTypeShort && input.key == InputKeyDown) {
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privdata->cur_field = (privdata->cur_field + 1) % fs->numfields;
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} else if(input.type == InputTypeShort && input.key == InputKeyUp) {
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if(privdata->cur_field == 0)
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privdata->cur_field = fs->numfields - 1;
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else
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privdata->cur_field--;
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} else if(input.type == InputTypeShort && input.key == InputKeyRight) {
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increment_current_field(app, 1);
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} else if(input.type == InputTypeShort && input.key == InputKeyLeft) {
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increment_current_field(app, -1);
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} else if(input.type == InputTypeRepeat && input.key == InputKeyRight) {
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// The reason why we don't use a large increment directly
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// is that certain field types only support +1 -1 increments.
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int times = 10;
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while(times--) increment_current_field(app, 1);
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} else if(input.type == InputTypeRepeat && input.key == InputKeyLeft) {
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int times = 10;
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while(times--) increment_current_field(app, -1);
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} else if(input.type == InputTypeLong && input.key == InputKeyOk) {
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// Build the message in a fresh raw buffer.
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if(privdata->decoder->build_message) {
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RawSamplesBuffer* rs = raw_samples_alloc();
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privdata->decoder->build_message(rs, privdata->fieldset);
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app->signal_decoded = false; // So that the new signal will be
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// accepted as the current signal.
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scan_for_signal(app, rs, 5);
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raw_samples_free(rs);
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ui_show_alert(app, "Done: press back key", 3000);
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}
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}
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}
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/* Handle input for the build message view. */
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void process_input_build_message(ProtoViewApp* app, InputEvent input) {
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BuildViewPrivData* privdata = app->view_privdata;
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if(privdata->decoder)
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process_input_set_fields(app, input);
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else
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process_input_select_decoder(app, input);
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}
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/* Enter view callback. */
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void view_enter_build_message(ProtoViewApp* app) {
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BuildViewPrivData* privdata = app->view_privdata;
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// When we enter the view, the current decoder is just set to zero.
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// Seek the next valid if needed.
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if(Decoders[privdata->cur_decoder]->get_fields == NULL) {
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select_next_decoder(app);
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}
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// However if there is currently a decoded message, and the
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// decoder of such message supports message building, let's
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// select it.
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if(app->signal_decoded && app->msg_info->decoder->get_fields &&
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app->msg_info->decoder->build_message) {
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while(Decoders[privdata->cur_decoder] != app->msg_info->decoder) select_next_decoder(app);
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}
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}
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/* Called on exit for cleanup. */
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void view_exit_build_message(ProtoViewApp* app) {
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BuildViewPrivData* privdata = app->view_privdata;
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if(privdata->fieldset) fieldset_free(privdata->fieldset);
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if(privdata->user_value) free(privdata->user_value);
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}
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