PaperdinkUICryptoClass Class Reference

#include <crypto.h>

Inheritance diagram for PaperdinkUICryptoClass:

Public Member Functions
int8_t	fetch_data (const char *ticker)
void	display_med_box (GxEPD2_GFX &display, int16_t x, int16_t y, const char *ticker)

Public Attributes
char	price [CRYPTO_MAX_PRICE_LENGTH_STR] = "USD XXX"
char	change [CRYPTO_MAX_CHANGE_LENGTH_STR] = "XXXX%"
Public Attributes inherited from PaperdinkUIBaseClass
const GFXfont *	font = &PAPERDINK_FONT_SML
const GFXfont *	font_bold = &PAPERDINK_FONT_SML_BOLD
int	primary_color = GxEPD_BLACK
int	secondary_color = GxEPD_WHITE
int	tertiary_color = GxEPD_BLACK

Detailed Description

Definition at line 19 of file crypto.h.

Member Function Documentation

display_med_box()

void PaperdinkUICryptoClass::display_med_box	(	GxEPD2_GFX &	display,
		int16_t	x,
		int16_t	y,
		const char *	ticker )

Definition at line 71 of file crypto.cpp.

{
    int16_t xt, yt;
    uint16_t wt, ht, prev_height = 0, prev_width = 0;
    const int16_t block_width = 100;
    const int16_t block_height = 50;
 
    //const char ticker[] = "Bitcoin";
    const char dummy_price[] = "USD 7.77777777"; // decides width of the box
    //const char change[] = "1.32%";
 
    display.setFont(font_bold);
    display.setTextColor(primary_color);
    display.setTextSize(1);
 
    /* Display ticker string */
    display.getTextBounds(F("Bitcoin"), 0, 0, &xt, &yt, &wt, &ht);
    display.setCursor(x + 14, y + ht + 3);
    display.print(ticker);
 
    display.setFont(font);
    /* Display background */
    display.getTextBounds(dummy_price, 0, 0, &xt, &yt, &wt, &ht);
    display.fillRoundRect(x + 5, y + 30, wt + 20, ht + 10, ht + 10, secondary_color);
    prev_width += x + 5 + wt + 20;
    prev_height += y + 30;
 
    /* Display current price */
    display.setTextColor(tertiary_color);
    display.getTextBounds(price, 0, 0, &xt, &yt, &wt, &ht);
    display.setCursor(5 + ((x + prev_width - wt) / 2), prev_height + ht + 4);
    display.print(price);
    prev_width += 4;
    prev_height += -2;
 
    /* Display arrow */
    const uint8_t *arrow = up_arrow_sml;
    uint16_t color = primary_color;
    if (change[0] == '-') {
        arrow = down_arrow_sml;
        if (display.epd2.hasColor)
            color = secondary_color;
    }
    display.drawBitmap(prev_width, prev_height, arrow, 24, 24, color);
    prev_width += 24; // Size of bitmap
 
    // Display percentage change
    display.setTextColor(primary_color);
    display.getTextBounds(change, 0, 0, &xt, &yt, &wt, &ht);
    display.setCursor(prev_width - wt, y + ht + 3);
    display.print(change);
}

fetch_data()

int8_t PaperdinkUICryptoClass::fetch_data

(

const char *

ticker

)

Definition at line 33 of file crypto.cpp.

{
    int httpCode, ret = 0;
    String payload;
    WiFiClientSecure *client = new WiFiClientSecure;
    client->setCACert(cert);
 
    {
        HTTPClient https;
 
        String get_url = url + ticker;
 
        https.begin(*client, get_url.c_str());
        https.addHeader("Content-Type", "application/json", 0, 0);
 
        httpCode = https.GET();
 
        if (httpCode == HTTP_CODE_OK) {
            // HTTP header has been send and Server response header has been handled
            DEBUG.printf("[HTTP] GET SUCCESS\r\n");
            //String payload = https.getString();
            //Serial.println(payload);
            ArudinoStreamParser parser;
            parser.setListener(&crypto_listener);
            https.writeToStream(&parser);
        } else {
            DEBUG.printf("[HTTP] Failed, error: %s\r\n", https.errorToString(httpCode).c_str());
            ret = -1;
        }
 
        https.end();
    }
 
    delete client;
    DEBUG.printf("[HTTP] COMPLETED \r\n");
    return ret;
}

Member Data Documentation

change

char PaperdinkUICryptoClass::change[CRYPTO_MAX_CHANGE_LENGTH_STR] = "XXXX%"

Definition at line 23 of file crypto.h.

price

char PaperdinkUICryptoClass::price[CRYPTO_MAX_PRICE_LENGTH_STR] = "USD XXX"

Definition at line 22 of file crypto.h.

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The documentation for this class was generated from the following files:

• src/ui/crypto/crypto.h
• src/ui/crypto/crypto.cpp