mirror of
https://github.com/eried/portapack-mayhem.git
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87069f11e5
* invert display option * text fix, format code
162 lines
5.7 KiB
C++
162 lines
5.7 KiB
C++
/*
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* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
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* Copyright (C) 2016 Furrtek
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __LCD_ILI9341_H__
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#define __LCD_ILI9341_H__
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#include "ui.hpp"
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#include "ui_text.hpp"
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#include "file.hpp"
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#include <cstdint>
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#include <array>
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namespace lcd {
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class ILI9341 {
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public:
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constexpr ILI9341()
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: scroll_state{0, 0, height(), 0} {
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}
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ILI9341(const ILI9341&) = delete;
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ILI9341(ILI9341&&) = delete;
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void operator=(const ILI9341&) = delete;
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bool read_display_status();
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void init();
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void shutdown();
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void sleep();
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void wake();
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void set_inverted(bool invert);
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void fill_rectangle(ui::Rect r, const ui::Color c);
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void fill_rectangle_unrolled8(ui::Rect r, const ui::Color c);
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void draw_line(const ui::Point start, const ui::Point end, const ui::Color color);
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void fill_circle(
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const ui::Point center,
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const ui::Dim radius,
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const ui::Color foreground,
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const ui::Color background);
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void draw_pixel(const ui::Point p, const ui::Color color);
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void drawBMP(const ui::Point p, const uint8_t* bitmap, const bool transparency);
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bool drawBMP2(const ui::Point p, const std::filesystem::path& file);
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void render_line(const ui::Point p, const uint8_t count, const ui::Color* line_buffer);
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void render_box(const ui::Point p, const ui::Size s, const ui::Color* line_buffer);
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template <size_t N>
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void draw_pixels(
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const ui::Rect r,
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const std::array<ui::Color, N>& colors) {
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draw_pixels(r, colors.data(), colors.size());
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}
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template <size_t N>
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void read_pixels(
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const ui::Rect r,
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std::array<ui::ColorRGB888, N>& colors) {
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read_pixels(r, colors.data(), colors.size());
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}
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void draw_bitmap(
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const ui::Point p,
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const ui::Size size,
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const uint8_t* const data,
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const ui::Color foreground,
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const ui::Color background);
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void draw_glyph(
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const ui::Point p,
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const ui::Glyph& glyph,
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const ui::Color foreground,
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const ui::Color background);
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/*** Scrolling ***
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* Scrolling support is implemented in the ILI9341 driver. Basically a region
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* of the screen is set up to act as a circular buffer. The VSA (vertical scroll
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* address) is the line that defines the "start" of the circular buffer. In our
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* case, the driver is set up for "bottom-up" scrolling. In this mode, drawing
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* starts at the bottom of the scroll region and draws the buffer upward.
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* However, the whole display's address space is inverted (the screen is actually
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* upside down in the PortaPack) so this bottom-up drawing appears to be top-down.
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*
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* What this means is that the line pointed to by VSA will be drawn at the top
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* of the scroll region and the line at VSA - 1 (wrapped) will be the bottom.
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* Consider the following screen buffers and VSA pointers.
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*
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* Buffer: Display: Buffer: Display:
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* VSA > A A A C NB: VSA points to the "Top"
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* B B B D of the rendered output.
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* C C VSA > C A
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* D D D B
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*/
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/* Sets the top and bottom lines of the scrolling region. */
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void scroll_set_area(const ui::Coord top_y, const ui::Coord bottom_y);
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void scroll_disable();
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/* Sets VSA. This an offset from top_y not a screen coordinate. */
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ui::Coord scroll_set_position(const ui::Coord position);
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/* Relative adjustment to VSA. Positive value will cause output
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* to scoll "down", negative values will cause the output to scroll "up". */
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ui::Coord scroll(const int32_t delta);
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/* Gets a screen coordinate from a scroll region offset. Values are wrapped
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* so the offset is wrapped within the bounds of the scroll region. The
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* specified offset is applied to VSA and then offset by the scroll region
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* top to produce a screen coordinate.
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* Consider the following screen buffers and VSA pointer. Note the offsets.
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*
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* VSA > A = +0 A = +2
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* B = +1 B = +3 NB: As before, VSA is always the "top"
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* C = +2 VSA > C = +0 and line at VSA - 1 will be the
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* D = +3 D = +1 "bottom" or the max 'y' offset.
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*/
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ui::Coord scroll_area_y(const ui::Coord y) const;
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constexpr ui::Dim width() const { return ui::screen_width; }
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constexpr ui::Dim height() const { return ui::screen_height; }
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constexpr ui::Rect screen_rect() const { return {0, 0, width(), height()}; }
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void draw_pixels(const ui::Rect r, const ui::Color* const colors, const size_t count);
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void read_pixels(const ui::Rect r, ui::ColorRGB888* const colors, const size_t count);
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private:
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struct scroll_t {
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ui::Coord top_area;
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ui::Coord bottom_area;
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ui::Dim height;
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ui::Coord current_position;
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};
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scroll_t scroll_state;
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};
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} /* namespace lcd */
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#endif /*__LCD_ILI9341_H__*/
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