.. _program_listing_file_src_canvas_canvas.h:

Program Listing for File canvas.h
=================================

|exhale_lsh| :ref:`Return to documentation for file <file_src_canvas_canvas.h>` (``src/canvas/canvas.h``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   /*
    * Canvas.h - Base class for drawing patterns on a Section.
    */
   
   #ifndef CANVAS_H
   #define CANVAS_H
   
   #include <stdint.h>
   #include "../core/colors.h"
   #include "../core/point.h"
   #include "../core/section.h"
   #include "../core/timer/timer.h"
   #include "fonts/font.h"
   
   namespace PixelMaestro {
       class Section;
       class Timer;
   
       class Canvas {
           public:
               explicit Canvas(Section& section, uint16_t num_frames = 1);
               ~Canvas();
               void initialize();
   
               void clear();
               void draw_circle(uint16_t frame_index, uint8_t color_index, uint16_t origin_x, uint16_t origin_y, uint16_t radius, bool fill);
               void draw_frame(uint16_t frame_index, uint8_t* frame, uint16_t size_x, uint16_t size_y);
               void draw_line(uint16_t frame_index, uint8_t color_index, uint16_t origin_x, uint16_t origin_y, uint16_t target_x, uint16_t target_y);
               void draw_point(uint16_t frame_index, uint8_t color_index, uint16_t x, uint16_t y);
               void draw_rect(uint16_t frame_index, uint8_t color_index, uint16_t origin_x, uint16_t origin_y, uint16_t size_x, uint16_t size_y, bool fill);
               void draw_text(uint16_t frame_index, uint8_t color_index, uint16_t origin_x, uint16_t origin_y, Font& font, const char* text, uint8_t num_chars);
               void draw_triangle(uint16_t frame_index, uint8_t color_index, uint16_t point_a_x, uint16_t point_a_y, uint16_t point_b_x, uint16_t point_b_y, uint16_t point_c_x, uint16_t point_c_y, bool fill);
               void erase_point(uint16_t frame_index, uint16_t x, uint16_t y);
               uint16_t get_current_frame_index() const;
               Timer* get_frame_timer() const;
               uint8_t* get_frame(uint16_t frame) const;
               uint16_t get_num_frames() const;
               Palette* get_palette() const;
               Colors::RGB* get_pixel_color(uint16_t x, uint16_t y);
               Section& get_section() const;
               void next_frame();
               void previous_frame();
               void remove_frame_timer();
               void set_current_frame_index(uint16_t index);
               void set_frame_timer(uint16_t speed);
               void set_num_frames(uint16_t num_frames);
               void set_palette(Palette& palette);
               void update(const uint32_t& current_time);
   
           private:
               uint16_t current_frame_index_ = 0;
   
               Timer* frame_timer_ = nullptr;
   
               uint8_t** frames_ = nullptr;
   
               uint16_t num_frames_ = 0;
   
               Palette* palette_ = nullptr;
   
               Section& section_;
   
               void delete_frames();
       };
   }
   
   #endif // CANVAS_H