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#pragma once
#include "render_object.hpp"
#include <string>
namespace cru::ui::render {
class TextRenderObject : public RenderObject {
public:
constexpr static float default_caret_width = 2;
public:
TextRenderObject(std::shared_ptr<platform::graph::IBrush> brush,
std::shared_ptr<platform::graph::IFont> font,
std::shared_ptr<platform::graph::IBrush> selection_brush,
std::shared_ptr<platform::graph::IBrush> caret_brush);
TextRenderObject(const TextRenderObject& other) = delete;
TextRenderObject(TextRenderObject&& other) = delete;
TextRenderObject& operator=(const TextRenderObject& other) = delete;
TextRenderObject& operator=(TextRenderObject&& other) = delete;
~TextRenderObject() override;
std::string GetText() const;
void SetText(std::string new_text);
std::shared_ptr<platform::graph::IBrush> GetBrush() const { return brush_; }
void SetBrush(std::shared_ptr<platform::graph::IBrush> new_brush);
std::shared_ptr<platform::graph::IFont> GetFont() const;
void SetFont(std::shared_ptr<platform::graph::IFont> font);
std::vector<Rect> TextRangeRect(const TextRange& text_range);
Point TextSinglePoint(gsl::index position, bool trailing);
platform::graph::TextHitTestResult TextHitTest(const Point& point);
std::optional<TextRange> GetSelectionRange() const {
return selection_range_;
}
void SetSelectionRange(std::optional<TextRange> new_range);
std::shared_ptr<platform::graph::IBrush> GetSelectionBrush() const {
return selection_brush_;
}
void SetSelectionBrush(std::shared_ptr<platform::graph::IBrush> new_brush);
bool IsDrawCaret() const { return draw_caret_; }
void SetDrawCaret(bool draw_caret);
void ToggleDrawCaret() { SetDrawCaret(!IsDrawCaret()); }
// Caret position can be any value. When it is negative, 0 is used. When it
// exceeds the size of the string, the size of the string is used.
gsl::index GetCaretPosition() const { return caret_position_; }
void SetCaretPosition(gsl::index position);
std::shared_ptr<platform::graph::IBrush> GetCaretBrush() const {
return caret_brush_;
}
void GetCaretBrush(std::shared_ptr<platform::graph::IBrush> brush);
float GetCaretWidth() const { return caret_width_; }
void SetCaretWidth(float width);
void Draw(platform::graph::IPainter* painter) override;
RenderObject* HitTest(const Point& point) override;
protected:
Size OnMeasureContent(const Size& available_size) override;
void OnLayoutContent(const Rect& content_rect) override;
void OnAfterLayout() override;
private:
std::shared_ptr<platform::graph::IBrush> brush_;
std::shared_ptr<platform::graph::IFont> font_;
std::unique_ptr<platform::graph::ITextLayout> text_layout_;
std::optional<TextRange> selection_range_ = std::nullopt;
std::shared_ptr<platform::graph::IBrush> selection_brush_;
bool draw_caret_ = false;
gsl::index caret_position_ = 0;
std::shared_ptr<platform::graph::IBrush> caret_brush_;
float caret_width_ = default_caret_width;
};
} // namespace cru::ui::render
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