97 lines
2.2 KiB
C++
97 lines
2.2 KiB
C++
/**
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* @file Image.h
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* @author apio (cloudapio.eu)
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* @brief TGA image loading and rendering.
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*
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* @copyright Copyright (c) 2023, the Luna authors.
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*
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*/
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#pragma once
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#include <luna/Buffer.h>
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#include <luna/SharedPtr.h>
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#include <os/Path.h>
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#include <ui/Widget.h>
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namespace ui
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{
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/**
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* @brief An image in the TGA file format.
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*/
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class Image : public Shareable
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{
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public:
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/**
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* @brief Load a new TGA image from a file.
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*
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* @param path The path to open.
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* @return Result<SharedPtr<Image>> An error, or a new Image object.
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*/
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static Result<SharedPtr<Image>> load(const os::Path& path);
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/**
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* @brief Return the array of pixels contained in the image.
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*
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* @return u32* The array of pixels.
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*/
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u32* pixels()
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{
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return (u32*)m_image_data.data();
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}
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/**
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* @brief Return the width of the image.
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*
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* @return u16 The width.
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*/
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u16 width()
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{
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return m_tga_header.w;
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}
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/**
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* @brief Return the height of the image.
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*
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* @return u16 The height.
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*/
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u16 height()
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{
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return m_tga_header.h;
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}
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private:
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struct [[gnu::packed]] TGAHeader
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{
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u8 idlen;
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u8 colormap;
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u8 encoding;
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u16 cmaporig, cmaplen;
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u8 cmapent;
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u16 x;
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u16 y;
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u16 w;
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u16 h;
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u8 bpp;
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u8 pixeltype;
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};
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TGAHeader m_tga_header;
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Buffer m_image_data;
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};
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class ImageWidget final : public Widget
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{
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public:
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static Result<OwnedPtr<ImageWidget>> load(const os::Path& path);
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Result<EventResult> handle_mouse_move(Point position) override;
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Result<EventResult> handle_mouse_leave() override;
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Result<EventResult> handle_mouse_down(Point position, int buttons) override;
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Result<EventResult> handle_mouse_up(Point position, int buttons) override;
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Result<void> draw(Canvas& canvas) override;
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private:
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SharedPtr<Image> m_image;
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};
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}
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