Public release

lib/Epub/Epub/Page.h

@@ -0,0 +1,43 @@
+#pragma once
+#include "blocks/TextBlock.h"
+
+enum PageElementTag : uint8_t {
+  TAG_PageLine = 1,
+};
+
+// represents something that has been added to a page
+class PageElement {
+ public:
+  int yPos;
+  explicit PageElement(const int yPos) : yPos(yPos) {}
+  virtual ~PageElement() = default;
+  virtual void render(EpdRenderer* renderer) = 0;
+  virtual void serialize(std::ostream& os) = 0;
+};
+
+// a line from a block element
+class PageLine final : public PageElement {
+  const TextBlock* block;
+
+ public:
+  PageLine(const TextBlock* block, const int yPos) : PageElement(yPos), block(block) {}
+  ~PageLine() override { delete block; }
+  void render(EpdRenderer* renderer) override;
+  void serialize(std::ostream& os) override;
+  static PageLine* deserialize(std::istream& is);
+};
+
+class Page {
+ public:
+  int nextY = 0;
+  // the list of block index and line numbers on this page
+  std::vector<PageElement*> elements;
+  void render(EpdRenderer* renderer) const;
+  ~Page() {
+    for (const auto element : elements) {
+      delete element;
+    }
+  }
+  void serialize(std::ostream& os) const;
+  static Page* deserialize(std::istream& is);
+};