fastriver

<p><span class="embed-block zenn-embedded zenn-embedded-github"><iframe id="zenn-embedded__0a24971b96c51" src="https://embed.zenn.studio/github#zenn-embedded__0a24971b96c51" data-content="https%3A%2F%2Fgithub.com%2Fflutter%2Fengine%2Fblob%2Fmain%2Fshell%2Fplatform%2Fglfw%2Fflutter_glfw.cc" frameborder="0" scrolling="no" loading="lazy"></iframe></span><a href="https://github.com/flutter/engine/blob/main/shell/platform/glfw/flutter_glfw.cc" style="display:none" target="_blank" rel="nofollow noopener noreferrer">https://github.com/flutter/engine/blob/main/shell/platform/glfw/flutter_glfw.cc</a></p>


<p>PointerEventPhaseはembedder.hに定義がある</p>
<p><span class="embed-block zenn-embedded zenn-embedded-github"><iframe id="zenn-embedded__0fec0875cd688" src="https://embed.zenn.studio/github#zenn-embedded__0fec0875cd688" data-content="https%3A%2F%2Fgithub.com%2Fflutter%2Fengine%2Fblob%2F9ccaa33935d01aecc2d58148a6488cd44a35cd1f%2Fshell%2Fplatform%2Fembedder%2Fembedder.h%23L820" frameborder="0" scrolling="no" loading="lazy"></iframe></span><a href="https://github.com/flutter/engine/blob/9ccaa33935d01aecc2d58148a6488cd44a35cd1f/shell/platform/embedder/embedder.h#L820" style="display:none" target="_blank" rel="nofollow noopener noreferrer">https://github.com/flutter/engine/blob/9ccaa33935d01aecc2d58148a6488cd44a35cd1f/shell/platform/embedder/embedder.h#L820</a></p>
<p>GLFWバックエンド内で使われているのはこの内以下:</p>
<ul>
<li>kUp</li>
<li>kDown</li>
<li>kMove</li>
<li>kAdd</li>
<li>kRemove</li>
<li>kHover</li>
</ul>
<p><img src="https://storage.googleapis.com/zenn-user-upload/f898bbaececc-20221030.png" alt loading="lazy" class="md-img"></p>
<ul>
<li>Hoverについては有効になっていないとイベントが送られない</li>
<li>Hoverが無効かつボタンが押されていない場合、CursorPositionCallbackが無効になる
<ul>
<li>Hoverイベントが発火しない</li>
</ul>
</li>
<li>Hoverが有効かつボタンが押されている場合、CursorEnterCallbackが無効になる</li>
</ul>
