first commit

src/UIString.cpp

@@ -0,0 +1,48 @@
+#include "UIString.h"
+#include "HardwareSerial.h"
+#include "UIComponent.h"
+#include <Arduino_GFX.h>
+
+UIString::UIString() : UIElement(nullptr, {0, 0, 0, 0}, nullptr, (char *)"") {
+  this->type = STRING;
+  memset(this->value, 0, this->bufferSize);
+}
+
+UIString::UIString(Arduino_GFX *d, UIDimensions dims, UIDecorations *decor,
+                   char *title)
+    : UIElement(d, dims, decor, title) {
+  this->type = STRING;
+  memset(this->value, 0, this->bufferSize);
+}
+
+void UIString::Update(const char *v) {
+  uint64_t time = millis();
+  if ((time - this->lastUpdate) <= this->refreshRate) {
+    return;
+  }
+
+  // If the value is larger than our buffer - should add a way of knowing we
+  // got an error here
+  if (strlen(v) >= this->bufferSize) {
+    return;
+  }
+
+  // If the value hasn't changed we do not need to re-render
+  if (strcmp(this->value, v) == 0) {
+    return;
+  }
+
+  char newVal[this->bufferSize];
+  memset(newVal, 0, this->bufferSize);
+  // strncpy(newVal, v, this->bufferSize - 1);
+  sprintf(newVal, "%s", v);
+
+  char oldVal[this->bufferSize];
+  memset(oldVal, 0, this->bufferSize);
+  // strncpy(oldVal, v, this->bufferSize - 1);
+  sprintf(oldVal, "%s", this->value);
+
+  // Figure out the x0 and y0 for the text
+  replaceString(oldVal, newVal);
+  strncpy(this->value, v, this->bufferSize);
+}