Successful label printing

src/graphics/Bitmap.cpp

@@ -73,11 +73,13 @@ std::optional<std::vector<T>> Bitmap<T>::getCol(uint16_t col) {
 
     // first pixel is always beginning of the col
     std::vector<T> colPixels(mHeight);
-    auto it = mPixels.begin() + col;
+    auto it = std::next(mPixels.begin(), col);
 
     for (auto& colElement : colPixels) {
+        int offset = std::distance(mPixels.begin(), it);
+        //spdlog::debug("Distance {}: {}", offset, *it);
         colElement = *it;
-        it += mWidth;
+        std::advance(it, mWidth);
     }
 
     return colPixels;

src/graphics/Image.cpp

@@ -19,29 +19,34 @@
 
 #include "Image.hpp"
 
+#include <string>
+
 #include "pango/pango-font.h"
 
 namespace ptprnt::graphics {
 Image::Image() {
-    mSurface         = cairo_image_surface_create(CAIRO_FORMAT_A1, 512, 128);
+    mSurface         = cairo_image_surface_create(CAIRO_FORMAT_A8, 512, 128);
     cairo_t* cr      = cairo_create(mSurface);
     mFontDescription = pango_font_description_new();
     pango_font_description_set_family(mFontDescription, "sans");
     pango_font_description_set_weight(mFontDescription, PANGO_WEIGHT_SEMIBOLD);
     pango_font_description_set_size(mFontDescription, 60 * PANGO_SCALE);
 
+    std::string printThis("Mist 💩");
+
     mLayout = pango_cairo_create_layout(cr);
     pango_layout_set_font_description(mLayout, mFontDescription);
-    pango_layout_set_text(mLayout, "Hello, world", -1);
+    pango_layout_set_text(mLayout, printThis.c_str(), -1);
 
     cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
-    cairo_move_to(cr, 10.0, 94.0);
+    cairo_move_to(cr, 0.0, 94.0);
     pango_cairo_show_layout_line(cr, pango_layout_get_line(mLayout, 0));
 
-    //cairo_surface_write_to_png(mSurface, "hello.png");
+    cairo_surface_write_to_png(mSurface, "hello.png");
 }
 
 uint8_t* Image::getRaw() {
+    cairo_surface_flush(mSurface);
     return cairo_image_surface_get_data(mSurface);
 }