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https://github.com/mudita/MuditaOS.git
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49bbaf51a0
1. Implement partial refresh. 2. Implement refresh canceling mechanism. 3. Refactor some parts of the gui and display code. ad 1. - Detect parts of the screen changed since last update and merge them into bigger regions. These regions defines parts of the context sent to the display. - Refresh the region covering all of the parts since this is the most time consuming part and the size of the refreshed region doesn't change the time much. - Refresh the whole screen if deep refresh is requested and previously fast refresh was used. This is needed to prevent unwanted artifacts in some cases. ad 2. - Separate display update and refresh logic. - Divide image display message handling into two handlers, one updating and other one refreshing the screen. - Add cancel refresh message and use it to cancel refresh during update. - Store sum of refresh regions gathered during updates to refresh them all at once at the end.
54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
// Copyright (c) 2017-2022, Mudita Sp. z.o.o. All rights reserved.
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// For licensing, see https://github.com/mudita/MuditaOS/LICENSE.md
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#pragma once
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#include "Axes.hpp"
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#include "gui/Common.hpp"
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#include <cstdint>
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#include <limits>
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#include <string>
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namespace gui
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{
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/// defines both: size & position
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/// size is always in: { zero_size < max_size }
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/// position is always in: { min_position < zero_position < max_position }
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class BoundingBox
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{
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public:
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static constexpr Length zero_size = 0;
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static constexpr Length max_size = std::numeric_limits<Length>().max();
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static constexpr Length min_size = std::numeric_limits<Length>().min();
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static constexpr Position zero_position = 0;
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static constexpr Position max_position = std::numeric_limits<Position>().max();
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static constexpr Position min_position = std::numeric_limits<Position>().min();
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struct
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{
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Position x = zero_position, y = zero_position;
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Length w = zero_size, h = zero_size;
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};
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BoundingBox() = default;
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BoundingBox(Position x, Position y, Length w, Length h);
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static bool intersect(const BoundingBox &box1, const BoundingBox &box2, BoundingBox &result);
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/// set x,y,w,h to zero
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void clear();
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/// get size in axis - in x get width in y get height
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Length size(gui::Axis axis) const;
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/// get position in axis - in x get x, in y get y
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Position pos(gui::Axis axis) const;
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std::string str() const;
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/// assign width and/or height of bigger bounding box
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void expandSize(const BoundingBox &box);
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bool operator==(const BoundingBox &box) const;
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bool operator!=(const BoundingBox &box) const;
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};
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} /* namespace gui */
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