EmsiaetKadosh
117 lines
5.9 KiB
C++
117 lines
5.9 KiB
C++
//
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// Created by EmsiaetKadosh on 25-1-14.
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//
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#pragma once
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#include <thread>
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#include "def.h"
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#include "exception.h"
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class Game;
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/**
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* 用于标记相对位置。
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*/
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enum class Location : char { LEFT_TOP, LEFT, LEFT_BOTTOM, TOP, CENTER, BOTTOM, RIGHT_TOP, RIGHT, RIGHT_BOTTOM };
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interface IRenderable {
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virtual ~IRenderable() = default;
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virtual void render() const noexcept = 0;
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};
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interface ITickable {
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virtual ~ITickable() = default;
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virtual void tick() noexcept = 0;
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};
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struct Color {
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unsigned int inactive = 0xff777777;
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unsigned int active = 0xff000000;
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unsigned int hover = 0xff444444;
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unsigned int clicked = 0xffeeeeee;
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};
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inline static constexpr Color TextColor = {
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.inactive = 0xff333333,
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.active = 0xffeeeeee,
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.hover = 0xffeeeeee,
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.clicked = 0xff000000
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};
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class Renderer final : public ITickable {
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friend class Game;
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friend class Font;
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HDC MainDC = nullptr;
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HDC assistDC = nullptr;
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inline static BLENDFUNCTION blendFunction = {
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.BlendOp = AC_SRC_OVER,// Only
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.BlendFlags = 0,// Must 0
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.SourceConstantAlpha = 255,// 预乘
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.AlphaFormat = AC_SRC_ALPHA,// Only
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};
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std::thread::id renderThread = std::this_thread::get_id();
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int windowWidth = 0, windowHeight = 0;
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int resizeTime = 0;
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bool isRendering = false;
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void gameStartRender() noexcept {
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isRendering = true;
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renderThread = std::this_thread::get_id();
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}
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void gameEndRender() noexcept { isRendering = false; }
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public:
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explicit Renderer() { Logger.put(L"Renderer created"); }
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void initialize() noexcept;
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/**
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* 负责转发所有resize信息
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*/
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void resize(int width, int height) noexcept(false);
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[[nodiscard]] int getWidth() const noexcept { return windowWidth; }
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[[nodiscard]] int getHeight() const noexcept { return windowHeight; }
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void tick() noexcept override {
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// 联合处理resize防抖
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if (resizeTime > 0) --resizeTime;
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else if (resizeTime == 0) {
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resize(windowWidth, windowHeight);
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resizeTime = -1;
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}
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}
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/**
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* @attention 会忽略A透明度值
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* @param argb ARGB式颜色
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* @return int BGR式颜色
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*/
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[[nodiscard]] static unsigned int changeColorFormat(const unsigned int argb) { return (argb & 0xff) << 16 | (argb & 0xff00) | (argb & 0xff0000) >> 16; }
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void assertRendering() const noexcept(false) { if (!isRendering) throw InvalidOperationException(L"Operation should be done while rendering"); }
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void assertRenderThread() const noexcept(false) { if (std::this_thread::get_id() != renderThread) throw InvalidOperationException(L"Operation should be done in render thread"); }
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void fill(const int x, const int y, const int w, const int h, const unsigned int color) const {
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assertRendering();
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//assertRenderThread();
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if ((color & 0xff000000) == 0) return;
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const RECT rect{
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.left = x,
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.top = y,
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.right = x + w,
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.bottom = y + h
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};
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HBRUSH clr = CreateSolidBrush(changeColorFormat(color));
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if ((color & 0xff000000) == 0xff000000) FillRect(MainDC, &rect, clr);
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else {
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FillRect(assistDC, &rect, clr);
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AlphaBlend(MainDC, x, y, w, h, assistDC, x, y, w, h, blendFunction);
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}
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DeleteObject(clr);
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}
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};
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extern Renderer renderer;
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