Implement basic layouting

src/graphics/Label.hpp

@@ -26,15 +26,12 @@
 #include <vector>
 
 #include "cairo.h"
-#include "pango/pango-font.h"
+#include "graphics/interface/ILabel.hpp"
 #include "pango/pango-types.h"
 
 namespace ptprnt::graphics {
 
-constexpr const char* DEFAULT_FONT_FAMILY = "sans";
-constexpr const uint8_t DEFAULT_FONT_SIZE = 32;
-
-class Label {
+class Label : public ILabel {
    public:
     Label();
     ~Label();
@@ -44,20 +41,35 @@ class Label {
     Label(Label&&)                 = delete;
     Label& operator=(Label&&)      = delete;
 
-    std::vector<uint8_t> getRaw();
-    void create(const std::string& labelText, const uint16_t heightPixel);
+    bool create(PrintableText printableText, const uint16_t heightPixel) override;
+    bool create(const std::string& labelText, const uint16_t heightPixel) override;
     void writeToPng(const std::string& file);
-    int getLayoutWidth();
-    int getLayoutHeight();
+    [[nodiscard]] int getLayoutWidth() override;
+    [[nodiscard]] int getLayoutHeight() override;
+    [[nodiscard]] std::vector<uint8_t> getRaw() override;
+    void setFontSize(const double fontSize) override;
+    void setFontFamily(const std::string& fontFamily) override;
+
+    void setText(const std::string& text) override;
+    void setHAlign(HAlignPosition hpos) override;
+    void setVAlign(VAlignPosition vpos) override;
 
    private:
     // methods
-    uint8_t getNumLines(std::string_view str);
+    [[nodiscard]] uint8_t getNumLines(std::string_view str);
+    [[nodiscard]] PangoFontMap* createCustomFontMap();
     // members
+    // TODO: convert raw pointers here into std::unique_ptr with custom deleters, calling g_object_unref()
+    cairo_surface_t* mSurface{nullptr};
+    cairo_t* mCairoCtx{nullptr};
     PangoContext* mPangoCtx{nullptr};
     PangoLayout* mPangoLyt{nullptr};
-    PangoFontDescription* mPangoFontDesc{nullptr};
-    cairo_surface_t* mSurface{nullptr};
+    PangoFontMap* mFontMap{nullptr};
+    double mFontSize{DEFAULT_FONT_SIZE};
+    std::string mFontFamily{DEFAULT_FONT_FAMILY};
+    HAlignPosition mHAlign = HAlignPosition::LEFT;
+    VAlignPosition mVAlign = VAlignPosition::MIDDLE;
+    std::string mText{""};
     int mLayoutWidth = 0, mLayoutHeight = 0;
     int mPrinterHeight = 0;
 };