void _drawMessages() {
//Move the cursor to the bottom of the screen
display.setCursor(0, display.height());
display.setTextWrap(true);
int8_t row = _bottom;
display.clearDisplay();
//If first message is blank quit
ChatMessage first = getFromChatBuffer(_bottom);
if (strlen(first.name) == 0) {
display.setCursor(1, 1);
display.print("Nothing's here");
safeDisplay();
return;
}
//Draw each message starting from the bottom of the screen
while (display.getCursorY() >= 0 && row >= 0) {
ChatMessage message = getFromChatBuffer(row);
//Stop drawing messages if we hit an empty one
if (strlen(message.message) == 0 && strlen(message.name) == 0) {
break;
}
//Determine if the the mesage is two line or not
bool twoLine = (strlen(message.name) + strlen(message.message) > _maxCharsPerRow);
//Move cursor up to print the line(s)
uint8_t y = display.getCursorY() - ANX_FONT_HEIGHT;
if (twoLine) {
y -= ANX_FONT_HEIGHT;
}
display.setCursor(0, y);
//Ensure username is null terminated
char name[USERNAME_MAX_LENGTH + 1];
memcpy(name, message.name, USERNAME_MAX_LENGTH);
name[USERNAME_MAX_LENGTH] = '\0';
//Ensure message is null terminated
char msg[ANX_CHAT_MAX_LENGTH + 1];
memcpy(msg, message.message, ANX_CHAT_MAX_LENGTH);
msg[ANX_CHAT_MAX_LENGTH] = '\0';
display.print("@");
display.print(name);
display.print(":");
display.println(msg);
//Move cursor back up above the message we just printed
display.setCursor(0, y);
row--;
}
//Show
safeDisplay();
}
