153 lines
6.0 KiB
C++
153 lines
6.0 KiB
C++
// class that handles low-level rendering operations, such as drawing pixels and shapes to the display.
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// This class is framework-agnostic and focuses solely on manipulating a 1-bit per pixel buffer.
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// Constructor Args:
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// uint8_t* buffer: Pointer to the bit buffer
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// int width: Display width in pixels
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// int height: Display height in pixels
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#ifndef LOW_LEVEL_RENDER_H
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#define LOW_LEVEL_RENDER_H
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#include <cstdint>
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#include <string>
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#include <vector>
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// Font class that holds font data and dimensions
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class Font {
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private:
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const unsigned char* data;
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int num_chars;
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int bytes_per_char;
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int char_height;
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public:
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Font(const unsigned char* font_data, int num_chars, int bytes_per_char, int char_height)
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: data(font_data), num_chars(num_chars), bytes_per_char(bytes_per_char),
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char_height(char_height) {}
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const unsigned char* get_data() const { return data; }
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int get_num_chars() const { return num_chars; }
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int get_bytes_per_char() const { return bytes_per_char; }
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int get_char_height() const { return char_height; }
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// Get a specific character's data
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const unsigned char* get_char_data(int char_index) const {
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if (char_index < 0 || char_index >= num_chars) return nullptr;
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return data + (char_index * bytes_per_char);
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}
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};
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// Font extern declarations
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extern const unsigned char font_5x5[96][6];
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extern const unsigned char font_7linedigital[96][4];
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extern const unsigned char font_acme_5_outlines[96][6];
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extern const unsigned char font_aztech[96][6];
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extern const unsigned char font_BMplain[96][6];
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extern const unsigned char font_BMSPA[96][8];
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extern const unsigned char font_Blokus[96][6];
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extern const unsigned char font_bubblesstandard[96][7];
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extern const unsigned char font_Commo_Monospaced[96][8];
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extern const unsigned char font_crackers[96][6];
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extern const unsigned char font_formplex12[96][8];
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extern const unsigned char font_haiku[96][6];
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extern const unsigned char font_HISKYF21[96][6];
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extern const unsigned char font_homespun[96][7];
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extern const unsigned char font_HUNTER[96][8];
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extern const unsigned char font_m38[96][8];
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extern const unsigned char font_Minimum[96][6];
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extern const unsigned char font_Minimum_1[96][7];
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extern const unsigned char font_pzim3x5[96][3];
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extern const unsigned char font_Raumsond[96][5];
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extern const unsigned char font_renew[96][7];
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extern const unsigned char font_sloth[96][6];
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extern const unsigned char font_SUPERDIG[96][6];
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extern const unsigned char font_tama_mini02[96][5];
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extern const unsigned char font_zxpix[96][6];
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// Font object declarations
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extern Font font_5x5_obj;
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extern Font font_7linedigital_obj;
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extern Font font_acme_5_outlines_obj;
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extern Font font_aztech_obj;
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extern Font font_BMplain_obj;
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extern Font font_BMSPA_obj;
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extern Font font_Blokus_obj;
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extern Font font_bubblesstandard_obj;
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extern Font font_Commo_Monospaced_obj;
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extern Font font_crackers_obj;
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extern Font font_formplex12_obj;
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extern Font font_haiku_obj;
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extern Font font_HISKYF21_obj;
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extern Font font_homespun_obj;
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extern Font font_HUNTER_obj;
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extern Font font_m38_obj;
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extern Font font_Minimum_obj;
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extern Font font_Minimum_1_obj;
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extern Font font_pzim3x5_obj;
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extern Font font_Raumsond_obj;
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extern Font font_renew_obj;
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extern Font font_sloth_obj;
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extern Font font_SUPERDIG_obj;
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extern Font font_tama_mini02_obj;
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extern Font font_zxpix_obj;
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class LowLevelRenderer {
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private:
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uint8_t* bit_buffer;
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int V_WIDTH;
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int V_HEIGHT;
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const Font* current_font;
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bool clipping_enabled;
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int clip_x, clip_y, clip_width, clip_height;
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bool text_color;
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void draw_corner_arc(int center_x, int center_y, int radius, int quadrant, bool on);
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void fill_bottom_flat_triangle(int x1, int y1, int x2, int y2, int x3, int y3, bool on);
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void fill_top_flat_triangle(int x1, int y1, int x2, int y2, int x3, int y3, bool on);
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bool is_point_in_clip_rect(int x, int y);
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public:
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LowLevelRenderer(uint8_t* buffer, int width, int height);
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// Font management
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void set_font(const Font* font);
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void set_text_color(bool color);
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Font get_current_font() const { return *current_font; }
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bool get_current_text_color() const { return text_color; }
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int get_width() const { return V_WIDTH; }
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int get_height() const { return V_HEIGHT; }
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// --- 1-BIT DRAWING PRIMITIVES ---
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void set_pixel(int x, int y, bool on);
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void draw_line(int x0, int y0, int x1, int y1, bool on, int width = 1);
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void draw_rectangle(int x, int y, int width, int height, bool on, int line_width);
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void draw_filled_rectangle(int x, int y, int width, int height, bool on, int line_width);
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void draw_rounded_rectangle(int x, int y, int width, int height, int radius, bool on, bool filled = false);
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void draw_triangle(int x1, int y1, int x2, int y2, int x3, int y3, bool on);
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void draw_filled_triangle(int x1, int y1, int x2, int y2, int x3, int y3, bool on);
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void draw_ellipse(int center_x, int center_y, int radius_x, int radius_y, bool on);
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void draw_filled_ellipse(int center_x, int center_y, int radius_x, int radius_y, bool on);
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void draw_polygon(const std::vector<std::pair<int, int>>& points, bool on);
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void draw_filled_polygon(const std::vector<std::pair<int, int>>& points, bool on);
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void draw_arc(int center_x, int center_y, int radius, int start_angle, int end_angle, bool on);
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// Bitmap drawing
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void draw_bitmap(const unsigned char* bitmap, int x, int y, int width, int height, bool invert = false);
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// Clipping functions
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void set_clip_rect(int x, int y, int width, int height);
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void reset_clip_rect();
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bool is_clipping_enabled() const;
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// Buffer operations
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void invert_buffer();
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void clear_buffer();
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void draw_circle(int x, int y, int radius, bool on);
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void draw_filled_circle(int x, int y, int radius, bool on);
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int draw_char_vcol(int x, int y, char c);
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void draw_string(int x, int y, const std::string &text, int spacing = 1);
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int draw_char_scaled(int x, int y, char c, int scale);
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int draw_string_scaled(int x, int y, const char* text, int scale, int spacing = 1);
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};
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#endif // LOW_LEVEL_RENDER_H
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