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firmware/src/graphics/draw/NotificationRenderer.cpp

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#include "configuration.h"
#if HAS_SCREEN
#include "DisplayFormatters.h"
#include "NodeDB.h"
#include "NotificationRenderer.h"
#include "graphics/ScreenFonts.h"
#include "graphics/SharedUIDisplay.h"
#include "graphics/images.h"
#include "main.h"
#include <algorithm>
#include <string>
#include <vector>
#ifdef ARCH_ESP32
#include "esp_task_wdt.h"
#endif
using namespace meshtastic;
// External references to global variables from Screen.cpp
extern std::vector<std::string> functionSymbol;
extern std::string functionSymbolString;
extern bool hasUnreadMessage;
namespace graphics
{
char NotificationRenderer::inEvent = INPUT_BROKER_NONE;
int8_t NotificationRenderer::curSelected = 0;
char NotificationRenderer::alertBannerMessage[256] = {0};
uint32_t NotificationRenderer::alertBannerUntil = 0; // 0 is a special case meaning forever
uint8_t NotificationRenderer::alertBannerOptions = 0; // last x lines are seelctable options
const char **NotificationRenderer::optionsArrayPtr = nullptr;
std::function<void(int)> NotificationRenderer::alertBannerCallback = NULL;
bool NotificationRenderer::pauseBanner = false;
// Used on boot when a certificate is being created
void NotificationRenderer::drawSSLScreen(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y)
{
display->setTextAlignment(TEXT_ALIGN_CENTER);
display->setFont(FONT_SMALL);
display->drawString(64 + x, y, "Creating SSL certificate");
#ifdef ARCH_ESP32
yield();
esp_task_wdt_reset();
#endif
display->setFont(FONT_SMALL);
if ((millis() / 1000) % 2) {
display->drawString(64 + x, FONT_HEIGHT_SMALL + y + 2, "Please wait . . .");
} else {
display->drawString(64 + x, FONT_HEIGHT_SMALL + y + 2, "Please wait . . ");
}
}
void NotificationRenderer::drawAlertBannerOverlay(OLEDDisplay *display, OLEDDisplayUiState *state)
{
// Exit if no message is active or duration has passed
if (!isOverlayBannerShowing())
return;
if (pauseBanner)
return;
// === Layout Configuration ===
constexpr uint16_t padding = 5; // Padding around text inside the box
constexpr uint16_t vPadding = 2; // Padding around text inside the box
constexpr uint8_t lineSpacing = 1; // Extra space between lines
// Search the message to determine if we need the bell added
bool needs_bell = (strstr(alertBannerMessage, "Alert Received") != nullptr);
uint8_t firstOptionToShow = 0;
// Setup font and alignment
display->setFont(FONT_SMALL);
display->setTextAlignment(TEXT_ALIGN_LEFT); // We will manually center per line
const int MAX_LINES = 5;
uint16_t optionWidths[alertBannerOptions] = {0};
uint16_t maxWidth = 0;
uint16_t arrowsWidth = display->getStringWidth("> <", 4, true);
uint16_t lineWidths[MAX_LINES] = {0};
uint16_t lineLengths[MAX_LINES] = {0};
char *lineStarts[MAX_LINES + 1];
uint16_t lineCount = 0;
uint16_t totalCount = 0;
char lineBuffer[40] = {0};
// pointer to the terminating null
char *alertEnd = alertBannerMessage + strnlen(alertBannerMessage, sizeof(alertBannerMessage));
lineStarts[lineCount] = alertBannerMessage;
// loop through lines finding \n characters
while ((lineCount < MAX_LINES) && (lineStarts[lineCount] < alertEnd)) {
lineStarts[lineCount + 1] = std::find(lineStarts[lineCount], alertEnd, '\n');
lineLengths[lineCount] = lineStarts[lineCount + 1] - lineStarts[lineCount];
if (lineStarts[lineCount + 1][0] == '\n') {
lineStarts[lineCount + 1] += 1; // Move the start pointer beyond the \n
}
lineWidths[lineCount] = display->getStringWidth(lineStarts[lineCount], lineLengths[lineCount], true);
if (lineWidths[lineCount] > maxWidth) {
maxWidth = lineWidths[lineCount];
}
lineCount++;
// if we are doing a selection, add extra width for arrows
}
if (alertBannerOptions > 0) {
for (int i = 0; i < alertBannerOptions; i++) {
optionWidths[i] = display->getStringWidth(optionsArrayPtr[i], strlen(optionsArrayPtr[i]), true);
if (optionWidths[i] > maxWidth) {
maxWidth = optionWidths[i];
}
if (optionWidths[i] + arrowsWidth > maxWidth) {
maxWidth = optionWidths[i] + arrowsWidth;
}
}
// respond to input
if (inEvent == INPUT_BROKER_UP || inEvent == INPUT_BROKER_ALT_PRESS) {
curSelected--;
} else if (inEvent == INPUT_BROKER_DOWN || inEvent == INPUT_BROKER_USER_PRESS) {
curSelected++;
} else if (inEvent == INPUT_BROKER_SELECT) {
alertBannerCallback(curSelected);
alertBannerMessage[0] = '\0';
} else if ((inEvent == INPUT_BROKER_CANCEL || inEvent == INPUT_BROKER_ALT_LONG) && alertBannerUntil != 0) {
alertBannerMessage[0] = '\0';
}
if (curSelected == -1)
curSelected = alertBannerOptions - 1;
if (curSelected == alertBannerOptions)
curSelected = 0;
if (curSelected > 1 && alertBannerOptions > 3) {
firstOptionToShow = curSelected - 1;
// put the selected option in the middle
} else {
firstOptionToShow = 0;
}
} else { // not in an alert with a callback
// TODO: check that at least a second has passed since the alert started
if (inEvent == INPUT_BROKER_SELECT || inEvent == INPUT_BROKER_ALT_LONG || inEvent == INPUT_BROKER_CANCEL) {
alertBannerMessage[0] = '\0'; // end the alert early
}
}
inEvent = INPUT_BROKER_NONE;
if (alertBannerMessage[0] == '\0')
return;
// set width from longest line
uint16_t boxWidth = padding * 2 + maxWidth;
if (needs_bell) {
if (isHighResolution && boxWidth <= 150) {
boxWidth += 26;
}
if (!isHighResolution && boxWidth <= 100) {
boxWidth += 20;
}
}
// calculate max lines on screen? for now it's 4
// set height from line count
uint16_t boxHeight;
totalCount = lineCount + alertBannerOptions;
if (totalCount <= 4) {
boxHeight = vPadding * 2 + totalCount * FONT_HEIGHT_SMALL + (totalCount - 1) * lineSpacing;
} else {
boxHeight = vPadding * 2 + 4 * FONT_HEIGHT_SMALL + 4 * lineSpacing;
}
int16_t boxLeft = (display->width() / 2) - (boxWidth / 2);
int16_t boxTop = (display->height() / 2) - (boxHeight / 2);
// === Draw background box ===
display->setColor(BLACK);
display->fillRect(boxLeft - 1, boxTop - 1, boxWidth + 2, boxHeight + 2); // Slightly oversized box
display->fillRect(boxLeft, boxTop - 2, boxWidth, 1); // Top Line
display->fillRect(boxLeft, boxTop + boxHeight + 1, boxWidth, 1); // Bottom Line
display->fillRect(boxLeft - 2, boxTop, 1, boxHeight); // Left Line
display->fillRect(boxLeft + boxWidth + 1, boxTop, 1, boxHeight); // Right Line
display->setColor(WHITE);
display->drawRect(boxLeft, boxTop, boxWidth, boxHeight); // Border
display->setColor(BLACK);
display->fillRect(boxLeft, boxTop, 1, 1); // Top Left
display->fillRect(boxLeft + boxWidth - 1, boxTop, 1, 1); // Top Right
display->fillRect(boxLeft, boxTop + boxHeight - 1, 1, 1); // Bottom Left
display->fillRect(boxLeft + boxWidth - 1, boxTop + boxHeight - 1, 1, 1); // Bottom Right
display->setColor(WHITE);
// === Draw each line centered in the box ===
int16_t lineY = boxTop + vPadding;
for (int i = 0; i < lineCount; i++) {
strncpy(lineBuffer, lineStarts[i], 40);
if (lineLengths[i] > 39)
lineBuffer[39] = '\0';
else
lineBuffer[lineLengths[i]] = '\0';
int16_t textX = boxLeft + (boxWidth - lineWidths[i]) / 2;
if (needs_bell && i == 0) {
int bellY = lineY + (FONT_HEIGHT_SMALL - 8) / 2;
display->drawXbm(textX - 10, bellY, 8, 8, bell_alert);
display->drawXbm(textX + lineWidths[i] + 2, bellY, 8, 8, bell_alert);
}
display->drawString(textX, lineY, lineBuffer);
lineY += FONT_HEIGHT_SMALL + lineSpacing;
}
for (int i = 0; i < alertBannerOptions; i++) {
// is this line selected?
// if so, start the buffer with -> and strncpy to the 4th location
if (i >= firstOptionToShow && i < firstOptionToShow + 3) {
if (i == curSelected) {
strncpy(lineBuffer, "> ", 3);
strncpy(lineBuffer + 2, optionsArrayPtr[i], 36);
strncpy(lineBuffer + strlen(optionsArrayPtr[i]) + 2, " <", 3);
optionWidths[i] += arrowsWidth;
lineBuffer[39] = '\0';
} else {
strncpy(lineBuffer, optionsArrayPtr[i], 40);
lineBuffer[39] = '\0';
}
int16_t textX = boxLeft + (boxWidth - optionWidths[i]) / 2;
if (needs_bell && i == 0) {
int bellY = lineY + (FONT_HEIGHT_SMALL - 8) / 2;
display->drawXbm(textX - 10, bellY, 8, 8, bell_alert);
display->drawXbm(textX + optionWidths[i] + 2, bellY, 8, 8, bell_alert);
}
display->drawString(textX, lineY, lineBuffer);
lineY += FONT_HEIGHT_SMALL + lineSpacing;
} else { // add break for the additional lines
continue;
}
}
}
/// Draw the last text message we received
void NotificationRenderer::drawCriticalFaultFrame(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y)
{
display->setTextAlignment(TEXT_ALIGN_LEFT);
display->setFont(FONT_MEDIUM);
char tempBuf[24];
snprintf(tempBuf, sizeof(tempBuf), "Critical fault #%d", error_code);
display->drawString(0 + x, 0 + y, tempBuf);
display->setTextAlignment(TEXT_ALIGN_LEFT);
display->setFont(FONT_SMALL);
display->drawString(0 + x, FONT_HEIGHT_MEDIUM + y, "For help, please visit \nmeshtastic.org");
}
void NotificationRenderer::drawFrameFirmware(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y)
{
display->setTextAlignment(TEXT_ALIGN_CENTER);
display->setFont(FONT_MEDIUM);
display->drawString(64 + x, y, "Updating");
display->setFont(FONT_SMALL);
display->setTextAlignment(TEXT_ALIGN_LEFT);
display->drawStringMaxWidth(0 + x, 2 + y + FONT_HEIGHT_SMALL * 2, x + display->getWidth(),
"Please be patient and do not power off.");
}
bool NotificationRenderer::isOverlayBannerShowing()
{
return strlen(alertBannerMessage) > 0 && (alertBannerUntil == 0 || millis() <= alertBannerUntil);
}
} // namespace graphics
#endif
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