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#pragma once
#include "Base.h"
#include "Font.h"
#include <cru/platform/graphics/TextLayout.h>
#include <memory>
namespace cru::platform::graphics::quartz {
class OsxCTTextLayout : public OsxQuartzResource, public virtual ITextLayout {
public:
OsxCTTextLayout(IGraphicsFactory* graphics_factory, std::shared_ptr<OsxCTFont> font,
const std::string& str);
~OsxCTTextLayout() override;
public:
std::string GetText() override { return text_; }
void SetText(std::string new_text) override;
std::shared_ptr<IFont> GetFont() override { return font_; }
void SetFont(std::shared_ptr<IFont> font) override;
void SetMaxWidth(float max_width) override;
void SetMaxHeight(float max_height) override;
bool IsEditMode() override;
void SetEditMode(bool enable) override;
Index GetLineIndexFromCharIndex(Index char_index) override;
Index GetLineCount() override;
float GetLineHeight(Index line_index) override;
Rect GetTextBounds(bool includingTrailingSpace = false) override;
std::vector<Rect> TextRangeRect(const TextRange& text_range) override;
Rect TextSinglePoint(Index position, bool trailing) override;
TextHitTestResult HitTest(const Point& point) override;
CTFrameRef GetCTFrameRef() const { return ct_frame_; }
CTFrameRef CreateFrameWithColor(const Color& color);
Matrix GetTransform() { return transform_; }
std::string GetDebugString() override;
private:
void DoSetText(std::string text);
void ReleaseResource();
void RecreateFrame();
CGRect DoGetTextBounds(bool includingTrailingSpace = false);
CGRect DoGetTextBoundsIncludingEmptyLines(bool includingTrailingSpace = false);
std::vector<CGRect> DoTextRangeRect(const TextRange& text_range);
CGRect DoTextSinglePoint(Index position, bool trailing);
private:
float max_width_;
float max_height_;
bool edit_mode_;
std::shared_ptr<OsxCTFont> font_;
std::string text_;
std::string actual_text_;
CFMutableAttributedStringRef cf_attributed_text_;
CTFramesetterRef ct_framesetter_ = nullptr;
float suggest_height_;
CTFrameRef ct_frame_ = nullptr;
int line_count_;
std::vector<CGPoint> line_origins_;
std::vector<CTLineRef> lines_;
std::vector<float> line_ascents_;
std::vector<float> line_descents_;
std::vector<float> line_heights_;
// The empty line count in the front of the lines.
int head_empty_line_count_;
// The trailing empty line count in the back of the lines.
int tail_empty_line_count_;
// Just for cache.
CGRect text_bounds_without_trailing_space_;
CGRect text_bounds_with_trailing_space_;
Matrix transform_;
};
} // namespace cru::platform::graphics::quartz
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