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<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">
<title>Easher' Blog</title>
<link href="/atom.xml" rel="self"/>
<link href="https://shalyf.github.io/"/>
<updated>2017-07-16T05:42:12.000Z</updated>
<id>https://shalyf.github.io/</id>
<author>
<name>Easher</name>
</author>
<generator uri="http://hexo.io/">Hexo</generator>
<entry>
<title>多张PNG图片合并成一张TIFF</title>
<link href="https://shalyf.github.io/2017/convert-pngs-to-tiff/"/>
<id>https://shalyf.github.io/2017/convert-pngs-to-tiff/</id>
<published>2017-07-15T14:30:04.000Z</published>
<updated>2017-07-16T05:42:12.000Z</updated>
<content type="html"><![CDATA[<p><code>iOS</code>和<code>macOS</code>开发中常用<code>PNG</code>文件作为图片资源，我们常使用<code>imageNamed</code>来使用图片资源，一般大家的做法都是让<code>UI</code>切图的时候给三个文件</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div></pre></td><td class="code"><pre><div class="line">icon@1x.png</div><div class="line">icon@2x.png</div><div class="line">icon@3x.png</div></pre></td></tr></table></figure>
<p>但是有时候情况特殊，你只能使用一个文件，比如在<code>Apple Script</code>中使用图片，那怎么办呢，经常接触<code>macOS</code>的人应该都见过<code>TIFF</code></p>
<blockquote>
<p>TIFF是一个灵活适应性强的文件格式。通过在文件标头中使用“标签”，它能够在一个文件中处理多幅图像和数据。<br><a href="https://zh.wikipedia.org/wiki/TIFF#.E7.81.B5.E6.B4.BB.E7.9A.84.E9.80.89.E9.A1.B9" target="_blank" rel="external">维基百科</a></p>
</blockquote>
<p>注意，<code>TIFF</code>是支持多页的，可以用一个<code>TIFF</code>文件包含上面的三幅图像，那怎么把三张<code>PNG</code>变成一张<code>TIFF</code>呢？我们有<code>ImageMagick</code>，不想装的可以看最后。</p>
<blockquote>
<p>ImageMagick是一个用于查看、编辑位图文件以及进行图像格式转换的开放源代码软件套装。它可以读取、编辑超过100种图象格式。<br>ImageMagick最基本的一个功能是准确高效地转换超过68种图片的格式，包括众所周知的TIFF、JPEG、PNG、PDF、PhotoCD，以及GIF。<br><a href="https://zh.wikipedia.org/wiki/ImageMagick#.E6.96.87.E4.BB.B6.E6.A0.BC.E5.BC.8F.E8.BD.AC.E6.8D.A2" target="_blank" rel="external">维基百科</a></p>
</blockquote>
<p><code>ImageMagick</code>可以用<a href="https://brew.sh" target="_blank" rel="external">HomeBrew</a>快速安装</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">$ brew install imagemagick</div></pre></td></tr></table></figure>
<p><code>convert</code>是<code>ImageMagick</code>用于转换图片格式的工具</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">$ convert icon@1x.png icon@2x.png icon@3x.png icon.tiff</div></pre></td></tr></table></figure>
<p>现在我们获得了<code>icon.tiff</code>这个文件，用自带的预览工具打开即可看到它包含了三幅图像，目标达成！</p>
<hr>
<p>但是我连<code>HomeBrew</code>都没装，太麻烦了啦，有没有更简单的，答案是有。</p>
<p><code>tiffutil</code>是<code>macOS</code>自带的用于操作<code>TIFF</code>文件的工具，它在<code>macOS 10.9</code>之后被内置在<code>usr/bin/</code>中，另外还有配套其他一些工具用来操作<code>TIFF</code>，比如<code>tiffinfo</code>等等。</p>
<p>用法其实也很简单：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">$ tiffutil -cathidpicheck icon@1x.png icon@2x.png icon@3x.png -out icon.tiff</div></pre></td></tr></table></figure>
<p>具体用法可以查看<a href="https://developer.apple.com/legacy/library/documentation/Darwin/Reference/ManPages/man1/tiffutil.1.html" target="_blank" rel="external">官方文档</a></p>
]]></content>
<summary type="html">
<p><code>iOS</code>和<code>macOS</code>开发中常用<code>PNG</code>文件作为图片资源，我们常使用<code>imageNamed</code>来使用图片资源，一般大家的做法都是让<code>UI</code>切图的时候给三个文件<
</summary>
<category term="Apple" scheme="https://shalyf.github.io/categories/Apple/"/>
<category term="macOS" scheme="https://shalyf.github.io/tags/macOS/"/>
</entry>
<entry>
<title>鼠标事件响应</title>
<link href="https://shalyf.github.io/2016/mouse-event/"/>
<id>https://shalyf.github.io/2016/mouse-event/</id>
<published>2016-02-01T05:21:09.000Z</published>
<updated>2017-07-15T15:43:37.000Z</updated>
<content type="html"><![CDATA[<p><code>NSResponder</code>提供了鼠标响应事件，而所有的视图都继承自<code>NSResponder</code>，所以我们可以很方便的处理鼠标事件。</p>
<h2 id="鼠标一般事件"><a href="#鼠标一般事件" class="headerlink" title="鼠标一般事件"></a>鼠标一般事件</h2><p>鼠标一般事件有按下和松开，又有左右键和其它键之分(本文只讨论左右键)，对应的消息如下：</p>
<figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div></pre></td><td class="code"><pre><div class="line"><span class="comment">// 按下鼠标左键</span></div><div class="line">- (<span class="keyword">void</span>)mouseDown:(<span class="built_in">NSEvent</span> *)theEvent;</div><div class="line"><span class="comment">// 松开鼠标左键</span></div><div class="line">- (<span class="keyword">void</span>)mouseUp:(<span class="built_in">NSEvent</span> *)theEvent;</div><div class="line"><span class="comment">// 按下鼠标右键</span></div><div class="line">- (<span class="keyword">void</span>)rightMouseDown:(<span class="built_in">NSEvent</span> *)theEvent;</div><div class="line"><span class="comment">// 松开鼠标右键</span></div><div class="line">- (<span class="keyword">void</span>)rightMouseUp:(<span class="built_in">NSEvent</span> *)theEvent;</div></pre></td></tr></table></figure>
<p>鼠标点击后，<code>NSEvent</code>捕获到的坐标是基于<code>Window</code>的，所以需要经过转换才能使用。</p>
<figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div></pre></td><td class="code"><pre><div class="line">- (<span class="keyword">void</span>)mouseDown:(<span class="built_in">NSEvent</span> *)theEvent {</div><div class="line"> <span class="comment">/**</span></div><div class="line"> * 将mouseDown消息传递给父类</div><div class="line"> * 注意，如果写了这句的话，mouseUp事件将不会触发</div><div class="line"> */</div><div class="line"> [<span class="keyword">super</span> mouseDown:theEvent];</div><div class="line"></div><div class="line"> <span class="comment">// 将鼠标点击位置的坐标从Window转换为当前View，fromView设为nil表示从Window转换</span></div><div class="line"> <span class="built_in">NSPoint</span> location = [<span class="keyword">self</span> convertPoint:theEvent.locationInWindow fromView:<span class="literal">nil</span>];</div><div class="line"> </div><div class="line"> <span class="comment">// doing something</span></div><div class="line">}</div></pre></td></tr></table></figure>
<a id="more"></a>
<h2 id="鼠标跟踪事件"><a href="#鼠标跟踪事件" class="headerlink" title="鼠标跟踪事件"></a>鼠标跟踪事件</h2><p>鼠标跟踪是通过定义一个矩形区域，捕获在这个区域内鼠标的进出和移动事件。这个监视区可以在<code>awakeFromNib</code>中用<code>addTrackingArea:</code>方法注册。</p>
<figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div></pre></td><td class="code"><pre><div class="line">- (<span class="keyword">void</span>)awakeFromNib {</div><div class="line"> <span class="comment">// 创建监视区</span></div><div class="line"> <span class="built_in">NSTrackingArea</span> *trackingArea = [[<span class="built_in">NSTrackingArea</span> alloc] initWithRect:<span class="keyword">self</span>.bounds options:</div><div class="line"> <span class="built_in">NSTrackingMouseMoved</span> |</div><div class="line"> <span class="built_in">NSTrackingMouseEnteredAndExited</span> |</div><div class="line"> <span class="built_in">NSTrackingActiveAlways</span> owner:<span class="keyword">self</span> userInfo:<span class="literal">nil</span>];</div><div class="line"> </div><div class="line"> <span class="comment">// 添加到View中</span></div><div class="line"> [<span class="keyword">self</span> addTrackingArea:trackingArea];</div><div class="line">}</div><div class="line"></div><div class="line"><span class="comment">// 鼠标进入监视区</span></div><div class="line">- (<span class="keyword">void</span>)mouseEntered:(<span class="built_in">NSEvent</span> *)theEvent;</div><div class="line"><span class="comment">// 鼠标在监视区内移动</span></div><div class="line">- (<span class="keyword">void</span>)mouseMoved:(<span class="built_in">NSEvent</span> *)theEvent</div><div class="line"><span class="comment">// 鼠标推出监视区</span></div><div class="line">- (<span class="keyword">void</span>)mouseExited:(<span class="built_in">NSEvent</span> *)theEvent;</div></pre></td></tr></table></figure>
<p>上述代码定义了一个<code>self.bounds</code>的矩形区域，在这个区域内的鼠标事件将被捕获。然而很多时候<code>View</code>的<code>frame</code>和<code>bounds</code>是会变化的，变化后在<code>awakeFromNib</code>中注册的监视区就与<code>View</code>不重合了，就会出现事件不会触发或者坐标偏差等现象。这个问题，可以通过重写<code>updateTrackingAreas</code>方法重新创建监视区来解决，<code>updateTrackingAreas</code>在控件大小或者坐标发生变化的时候会被触发。</p>
<figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div></pre></td><td class="code"><pre><div class="line"><span class="comment">// 定义一个变量来存储监视区</span></div><div class="line"><span class="built_in">NSTrackingArea</span> *_trackingArea;</div><div class="line"></div><div class="line">- (<span class="keyword">void</span>)updateTrackingAreas {</div><div class="line"> [<span class="keyword">super</span> updateTrackingAreas];</div><div class="line"> </div><div class="line"> <span class="keyword">if</span> (_trackingArea) <span class="comment">// 移除久的监视区</span></div><div class="line"> [<span class="keyword">self</span> removeTrackingArea:_trackingArea];</div><div class="line"> </div><div class="line"> <span class="comment">// 创建新的监视区</span></div><div class="line"> _trackingArea = [[<span class="built_in">NSTrackingArea</span> alloc] initWithRect:<span class="keyword">self</span>.bounds options:</div><div class="line"> <span class="built_in">NSTrackingMouseMoved</span> |</div><div class="line"> <span class="built_in">NSTrackingMouseEnteredAndExited</span> |</div><div class="line"> <span class="built_in">NSTrackingActiveAlways</span> owner:<span class="keyword">self</span> userInfo:<span class="literal">nil</span>];</div><div class="line"> </div><div class="line"> <span class="comment">// 添加到View中</span></div><div class="line"> [<span class="keyword">self</span> addTrackingArea:_trackingArea];</div><div class="line">}</div></pre></td></tr></table></figure>
<h2 id="鼠标拖拽事件"><a href="#鼠标拖拽事件" class="headerlink" title="鼠标拖拽事件"></a>鼠标拖拽事件</h2><p>鼠标拖拽顾名思义就是鼠标按下后不松开，然后移动鼠标，到目标位置后才松开，这三步完成了一次完整的鼠标拖拽动作。</p>
<figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div></pre></td><td class="code"><pre><div class="line"><span class="comment">// 鼠标左键拖拽</span></div><div class="line">- (<span class="keyword">void</span>)mouseDragged:(<span class="built_in">NSEvent</span> *)theEvent;</div><div class="line"><span class="comment">// 鼠标右键拖拽</span></div><div class="line">- (<span class="keyword">void</span>)rightMouseDragged:(<span class="built_in">NSEvent</span> *)theEvent;</div></pre></td></tr></table></figure>
<p>一次完整的拖拽动作代码是这样的：</p>
<figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div></pre></td><td class="code"><pre><div class="line"><span class="built_in">BOOL</span> isDragged = <span class="literal">NO</span>;</div><div class="line"></div><div class="line">- (<span class="keyword">void</span>)mouseDown:(<span class="built_in">NSEvent</span> *)theEvent {</div><div class="line"> <span class="comment">// 鼠标按下，开始拖拽</span></div><div class="line"> isDragged = <span class="literal">YES</span>;</div><div class="line">}</div><div class="line"></div><div class="line">- (<span class="keyword">void</span>)mouseDragged:(<span class="built_in">NSEvent</span> *)theEvent {</div><div class="line"> </div><div class="line"> <span class="keyword">if</span> (isDragged) { <span class="comment">// 拖拽中</span></div><div class="line"> </div><div class="line"> <span class="comment">// 这里不转换坐标的原因是setFrameOrigin需要用的就是在Window中的坐标</span></div><div class="line"> <span class="built_in">NSPoint</span> location = theEvent.locationInWindow;</div><div class="line"> </div><div class="line"> <span class="comment">// 改变控件在Window中的位置，当然这只是简单的写法，效果并不是特别好</span></div><div class="line"> [<span class="keyword">self</span> setFrameOrigin:location];</div><div class="line"> }</div><div class="line">}</div><div class="line"></div><div class="line">- (<span class="keyword">void</span>)mouseUp:(<span class="built_in">NSEvent</span> *)theEvent {</div><div class="line"> <span class="comment">// 鼠标松开，结束拖拽</span></div><div class="line"> isDragged = <span class="literal">NO</span>;</div><div class="line">}</div></pre></td></tr></table></figure>
<p>上面的代码需要三个方法来解决一个问题，还需要外部状态码来控制，有没有更优雅的写法呢？查阅<a href="https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/EventOverview/HandlingMouseEvents/HandlingMouseEvents.html#//apple_ref/doc/uid/10000060i-CH6-SW4" target="_blank" rel="external">苹果文档</a>，发现可以在<code>mouseDown</code>里面循环监听需要的鼠标事件。</p>
<figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div></pre></td><td class="code"><pre><div class="line">- (<span class="keyword">void</span>)mouseDown:(<span class="built_in">NSEvent</span> *)theEvent {</div><div class="line"></div><div class="line"> <span class="built_in">BOOL</span> keepOn = <span class="literal">YES</span>;</div><div class="line"></div><div class="line"> <span class="keyword">while</span> (keepOn) {</div><div class="line"> theEvent = [<span class="keyword">self</span>.window nextEventMatchingMask:<span class="built_in">NSLeftMouseUpMask</span> | <span class="built_in">NSLeftMouseDraggedMask</span>];</div><div class="line"> <span class="built_in">NSPoint</span> location = [<span class="keyword">self</span> convertPoint:theEvent.locationInWindow fromView:<span class="literal">nil</span>];</div><div class="line"> <span class="built_in">BOOL</span> isInside = [<span class="keyword">self</span> mouse:location inRect:<span class="keyword">self</span>.bounds];</div><div class="line"> </div><div class="line"> <span class="keyword">switch</span> (theEvent.type) {</div><div class="line"> <span class="keyword">case</span> <span class="built_in">NSLeftMouseUp</span>:</div><div class="line"> keepOn = <span class="literal">NO</span>;</div><div class="line"> </div><div class="line"> <span class="comment">// doing something</span></div><div class="line"> </div><div class="line"> <span class="keyword">if</span> (isInside)</div><div class="line"> [<span class="keyword">super</span> mouseDown:theEvent];</div><div class="line"></div><div class="line"> <span class="keyword">break</span>;</div><div class="line"> </div><div class="line"> <span class="keyword">case</span> <span class="built_in">NSLeftMouseDragged</span>:</div><div class="line"> <span class="comment">// doing something</span></div><div class="line"> <span class="keyword">break</span>;</div><div class="line"></div><div class="line"> <span class="keyword">default</span>:</div><div class="line"> <span class="keyword">break</span>;</div><div class="line"> }</div><div class="line"> }</div><div class="line">}</div></pre></td></tr></table></figure>
<p><code>while</code>创建了一个事件监听循环，通过<code>[NSWindow nextEventMatchingMask:]</code>来监听接下来的<code>NSLeftMouseUpMask</code>(左键抬起)和<code>NSLeftMouseDraggedMask</code>(左键拖动)，在<code>theEvent.type == NSLeftMouseUp</code>的时候将<code>keepOn</code>设置为<code>NO</code>以退出循环结束监听。</p>
<blockquote>
<p>注意：使用该方式需要谨慎，尤其是在多个<code>NSView</code>嵌套的时候，容易造成事件混乱。</p>
</blockquote>
]]></content>
<summary type="html">
<p><code>NSResponder</code>提供了鼠标响应事件，而所有的视图都继承自<code>NSResponder</code>，所以我们可以很方便的处理鼠标事件。</p>
<h2 id="鼠标一般事件"><a href="#鼠标一般事件" class="headerlink" title="鼠标一般事件"></a>鼠标一般事件</h2><p>鼠标一般事件有按下和松开，又有左右键和其它键之分(本文只讨论左右键)，对应的消息如下：</p>
<figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div></pre></td><td class="code"><pre><div class="line"><span class="comment">// 按下鼠标左键</span></div><div class="line">- (<span class="keyword">void</span>)mouseDown:(<span class="built_in">NSEvent</span> *)theEvent;</div><div class="line"><span class="comment">// 松开鼠标左键</span></div><div class="line">- (<span class="keyword">void</span>)mouseUp:(<span class="built_in">NSEvent</span> *)theEvent;</div><div class="line"><span class="comment">// 按下鼠标右键</span></div><div class="line">- (<span class="keyword">void</span>)rightMouseDown:(<span class="built_in">NSEvent</span> *)theEvent;</div><div class="line"><span class="comment">// 松开鼠标右键</span></div><div class="line">- (<span class="keyword">void</span>)rightMouseUp:(<span class="built_in">NSEvent</span> *)theEvent;</div></pre></td></tr></table></figure>
<p>鼠标点击后，<code>NSEvent</code>捕获到的坐标是基于<code>Window</code>的，所以需要经过转换才能使用。</p>
<figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div></pre></td><td class="code"><pre><div class="line">- (<span class="keyword">void</span>)mouseDown:(<span class="built_in">NSEvent</span> *)theEvent &#123;</div><div class="line"> <span class="comment">/**</span></div><div class="line"> * 将mouseDown消息传递给父类</div><div class="line"> * 注意，如果写了这句的话，mouseUp事件将不会触发</div><div class="line"> */</div><div class="line"> [<span class="keyword">super</span> mouseDown:theEvent];</div><div class="line"></div><div class="line"> <span class="comment">// 将鼠标点击位置的坐标从Window转换为当前View，fromView设为nil表示从Window转换</span></div><div class="line"> <span class="built_in">NSPoint</span> location = [<span class="keyword">self</span> convertPoint:theEvent.locationInWindow fromView:<span class="literal">nil</span>];</div><div class="line"> </div><div class="line"> <span class="comment">// doing something</span></div><div class="line">&#125;</div></pre></td></tr></table></figure>
</summary>
<category term="Apple" scheme="https://shalyf.github.io/categories/Apple/"/>
<category term="macOS" scheme="https://shalyf.github.io/tags/macOS/"/>
<category term="objc" scheme="https://shalyf.github.io/tags/objc/"/>
</entry>
<entry>
<title>NSWindow.setFrame的坑</title>
<link href="https://shalyf.github.io/2016/nswindow-setframe/"/>
<id>https://shalyf.github.io/2016/nswindow-setframe/</id>
<published>2016-01-25T08:32:05.000Z</published>
<updated>2017-07-15T15:06:34.000Z</updated>
<content type="html"><![CDATA[<p>在<code>macOS</code>的开发中，我们一般使用<code>NSWindow</code>的<code>setFrame</code>来改变窗体的坐标和大小，而坐标和大小一般是靠动态计算得出，这里要讲讲<code>setFrame</code>的一些坑。</p>
<p>我们知道<code>NSRect</code>里的<code>origin</code>和<code>size</code>都是浮点型的，而像素点是整数的，没有说<code>0.5</code>个像素的，真要有<code>0.5</code>像素，在屏幕上的表现要么是<code>0</code>，要么就是<code>1</code>。下面我们来做个小实验：</p>
<p>我们先创建一个<code>window</code><br><figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div></pre></td><td class="code"><pre><div class="line">_window = [[<span class="built_in">NSWindow</span> alloc] initWithContentRect:<span class="built_in">NSMakeRect</span>(<span class="number">450</span>, <span class="number">250</span>, <span class="number">400</span>, <span class="number">300</span>) styleMask:<span class="built_in">NSTitledWindowMask</span> | <span class="built_in">NSClosableWindowMask</span> backing:<span class="built_in">NSBackingStoreBuffered</span> defer:<span class="literal">YES</span>];</div><div class="line">[_window makeKeyAndOrderFront:<span class="keyword">self</span>];</div><div class="line">LogRect(<span class="string">@"window.frame"</span>, _window.frame);</div></pre></td></tr></table></figure></p>
<p>输出如下：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">window.frame: {450.00,250.00,400.00,322.00}</div></pre></td></tr></table></figure></p>
<p>可以看到，除了高度之外，其它值都按照我们提供的参数执行，至于高度为什么多了<code>22</code>，是因为我们设置了<code>NSTitledWindowMask</code>这个<code>styleMask</code>，窗体需要标题栏，高度为<code>22</code>。</p>
<p>接着通过<code>setFrame</code>来改变<code>window</code>的大小<br><figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div></pre></td><td class="code"><pre><div class="line">[_window setFrame:<span class="built_in">NSMakeRect</span>(<span class="number">450</span>, <span class="number">250</span>, <span class="number">400.5</span>, <span class="number">300</span>) display:<span class="literal">YES</span>];</div><div class="line">LogRect(<span class="string">@"window.changeSize"</span>, _window.frame);</div></pre></td></tr></table></figure></p>
<p>输出如下：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">window.changeSize: {450.00,250.00,401.00,300.00}</div></pre></td></tr></table></figure></p>
<p>可以看到<code>400.5</code>被改成了<code>401</code>，难道<code>NSWindow</code>会把提供的值四舍五入吗？通过实验发现，<code>400.1</code>被改成<code>400</code>，而<code>400.2</code>被改成<code>401</code>，由此看来并非四舍五入，具体实现这边不讨论。所以我们在使用<code>setFrame</code>的时候需要注意提供的参数最后会不会得到我们想要的结果。</p>
<p>说完了大小，我们来看看坐标，这回我们通过<code>setFrame</code>来改变<code>window</code>的坐标。<br><figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div></pre></td><td class="code"><pre><div class="line">[_window setFrame:<span class="built_in">NSMakeRect</span>(<span class="number">450</span>, <span class="number">250.5</span>, <span class="number">400</span>, <span class="number">300</span>) display:<span class="literal">YES</span>];</div><div class="line">LogRect(<span class="string">@"window.changeOrigin"</span>, _window.frame);</div></pre></td></tr></table></figure></p>
<p>通过前面的结果，我们想当然的认为结果应该是 <code>(450,251,400,300)</code>。然而事实并非如此，我们看看输出：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">window.changeOrigin: {450.00,250.00,400.00,301.00}</div></pre></td></tr></table></figure></p>
<p>相当的意外，坐标没变，而高度却加了<code>1</code>，我们没有改高度的啊。百思不得其解，尝试其它<code>y</code>值看看，然后发现<code>250.9</code>的结果是<code>(450,251,400,300)</code>，<code>250.8</code>的结果是<code>(450,250,400,301)</code>。惊呆了有木有，在此只能劝大家动态计算的时候最好把浮点型转换成整形再传递给<code>setFrame</code>。如果有人知道这是为什么，烦请告知，谢谢！</p>
]]></content>
<summary type="html">
<p>在<code>macOS</code>的开发中，我们一般使用<code>NSWindow</code>的<code>setFrame</code>来改变窗体的坐标和大小，而坐标和大小一般是靠动态计算得出，这里要讲讲<code>setFrame</code>的一些坑。</p>
</summary>
<category term="Apple" scheme="https://shalyf.github.io/categories/Apple/"/>
<category term="macOS" scheme="https://shalyf.github.io/tags/macOS/"/>
<category term="objc" scheme="https://shalyf.github.io/tags/objc/"/>
</entry>
<entry>
<title>让自定义view铺满整个NSWindow</title>
<link href="https://shalyf.github.io/2016/nswindow-full-size-content-view/"/>
<id>https://shalyf.github.io/2016/nswindow-full-size-content-view/</id>
<published>2016-01-23T06:11:20.000Z</published>
<updated>2017-07-15T15:06:29.000Z</updated>
<content type="html"><![CDATA[<h1 id="让自定义view铺满整个NSWindow"><a href="#让自定义view铺满整个NSWindow" class="headerlink" title="让自定义view铺满整个NSWindow"></a>让自定义view铺满整个NSWindow</h1><p>我们通过<code>IB</code>拖到窗体中的控件都是放到<code>NSWindow</code>的<code>contentView</code>视图中的，但是这个<code>contentView</code>不是铺满整个<code>window</code>的，顶部会有一个系统风格的<code>titlebarView</code>，现在项目需要让自定义的<code>view</code>可以铺满整个<code>window</code>。<br>在<code>macOS 10.10</code>之前，我们可以通过简单的两行代码来搞定：</p>
<figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div></pre></td><td class="code"><pre><div class="line"><span class="comment">//把自定义的view添加到contentView的superview中，也就是NSThemeView</span></div><div class="line"><span class="built_in">NSView</span> *themeView = [window.contentView superview];</div><div class="line">[themeView addSubview:<span class="keyword">self</span>.viewCustom positioned:<span class="built_in">NSWindowBelow</span> relativeTo:<span class="literal">nil</span>];</div></pre></td></tr></table></figure>
<p>但是在<code>macOS 10.10</code>以后，运行以上代码，会得到一段警告：</p>
<figure class="highlight objc"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line"><span class="built_in">NSWindow</span> warning: adding an unknown subview: <<span class="built_in">NSView</span>: <span class="number">0x608000120fa0</span>>. Break on <span class="built_in">NSLog</span> to debug.</div></pre></td></tr></table></figure>
<p>虽然目前并不会影响程序的执行，但是对于有点洁癖的人来说，看到这段警告还是很不爽的，那么在Yosemite我们要怎么避免这个错误而实现我们的目的呢？</p>
<p><code>macOS 10.10</code>之后，<code>NSWindow</code>的<code>styleMask</code>新增了一个<br><code>NSFullSizeContentViewWindowMask</code>，可以通过<code>NSWindow</code>的<code>setStyleMask:</code>来设置，也可以直接在IB中勾选<code>Full Size Content View</code>选项。设置完后<code>contentView</code>就会铺满整个窗体，包括<code>titleBar</code>部分。一个设置就搞定了，更方便更实用。</p>
]]></content>
<summary type="html">
<h1 id="让自定义view铺满整个NSWindow"><a href="#让自定义view铺满整个NSWindow" class="headerlink" title="让自定义view铺满整个NSWindow"></a>让自定义view铺满整个NSWindow</h1><
</summary>
<category term="Apple" scheme="https://shalyf.github.io/categories/Apple/"/>
<category term="macOS" scheme="https://shalyf.github.io/tags/macOS/"/>
<category term="objc" scheme="https://shalyf.github.io/tags/objc/"/>
</entry>
<entry>
<title>NSTableView 和 NSOutlineView 修改选中高亮颜色</title>
<link href="https://shalyf.github.io/2015/nstableview-highlight-selected-color/"/>
<id>https://shalyf.github.io/2015/nstableview-highlight-selected-color/</id>
<published>2015-11-14T09:14:21.000Z</published>
<updated>2017-07-15T15:06:24.000Z</updated>
<content type="html"><![CDATA[<p><code>NSTableView</code>和<code>NSOutlineView</code>的显示方式有两种，分别是<code>Cell Based</code>和<code>View Based</code>。前者需要重绘<code>Cell</code>来实现高度自定义；后者可以直接添加控件到<code>View</code>中，用起来比较简单，所以也比较常用。</p>
<h2 id="Cell-Based"><a href="#Cell-Based" class="headerlink" title="Cell Based"></a>Cell Based</h2><h3 id="覆写NSTableView或着NSOutlineView中的HighlightSelection方法"><a href="#覆写NSTableView或着NSOutlineView中的HighlightSelection方法" class="headerlink" title="覆写NSTableView或着NSOutlineView中的HighlightSelection方法"></a>覆写NSTableView或着NSOutlineView中的HighlightSelection方法</h3><figure class="highlight cs"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">public</span> ovrride <span class="keyword">void</span> <span class="title">HighlightSelection</span> (<span class="params">RectangleF clipRect</span>)</span></div><div class="line">{</div><div class="line"> NSRange aVisibleRowIndexs = <span class="keyword">this</span>.RowsInRect (clipRect);</div><div class="line"> </div><div class="line"> NSIndexSet aSelectRowIndexs = <span class="keyword">this</span>.SelectedRows;</div><div class="line"> <span class="keyword">int</span> aRow = aVisibleRowIndexs.Location;</div><div class="line"> <span class="keyword">int</span> aEndRow = aRow + aVisibleRowIndexs.Length;</div><div class="line"> </div><div class="line"> <span class="comment">// 控制是否获得焦点的颜色</span></div><div class="line"> <span class="comment">// NSGradient gradient;</span></div><div class="line"> <span class="comment">// if (this == this.Window.FirstResponder && this.Window.IsMainWindow && this.Window.IsKeyWindow) {</span></div><div class="line"> <span class="comment">// gradient = new NSGradient (new NSColor[] { TBTheme.ThemeColorWithAlpha (0.5f) });</span></div><div class="line"> <span class="comment">// } else {</span></div><div class="line"> <span class="comment">// gradient = new NSGradient (new NSColor[] { TBTheme.ThemeColorWithAlpha (0.8f) });</span></div><div class="line"> <span class="comment">// }</span></div><div class="line"> </div><div class="line"> <span class="keyword">for</span> (; arow < aEndRow; aRow++) {</div><div class="line"> <span class="keyword">if</span> (aSelectRowIndexs.Contains ((<span class="keyword">uint</span>)aRow)) {</div><div class="line"> RectangleF aRowRect = <span class="keyword">this</span>.RectForRow (aRow);</div><div class="line"> TBTheme.LightThemeColor.Set ();</div><div class="line"> NSGraphics.RectFill (aRowRect);</div><div class="line"> }</div><div class="line"> }</div><div class="line">}</div></pre></td></tr></table></figure>
<h3 id="覆写NSTextFieldCell中的HighlightColor方法"><a href="#覆写NSTextFieldCell中的HighlightColor方法" class="headerlink" title="覆写NSTextFieldCell中的HighlightColor方法"></a>覆写NSTextFieldCell中的HighlightColor方法</h3><figure class="highlight cs"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">public</span> ovrride NSColor <span class="title">HighlightColor</span> (<span class="params">RectangleF cellFrame, NSView controlView</span>)</span></div><div class="line">{</div><div class="line"> <span class="keyword">return</span> TBTheme.LightThemeColor;</div><div class="line">}</div></pre></td></tr></table></figure>
<a id="more"></a>
<h2 id="View-Based"><a href="#View-Based" class="headerlink" title="View Based"></a>View Based</h2><h3 id="覆写NSTableRowView中的DrawBackground方法"><a href="#覆写NSTableRowView中的DrawBackground方法" class="headerlink" title="覆写NSTableRowView中的DrawBackground方法"></a>覆写NSTableRowView中的DrawBackground方法</h3><figure class="highlight cs"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">public</span> ovrride <span class="keyword">void</span> <span class="title">DrawBackground</span> (<span class="params">RectangleF dirtyRect</span>)</span></div><div class="line">{</div><div class="line"> <span class="keyword">base</span>.DrawBackground (dirtyRect);</div><div class="line"> </div><div class="line"> <span class="keyword">using</span> (NSBezierPath path = NSBezierPath.FromRect (dirtyRect)) {</div><div class="line"> NSColor backgroundColor = TBTheme.ThemeColorWithAlpha (<span class="number">0.5</span>f);</div><div class="line"> NSIndexSet indexSet = <span class="keyword">new</span> NSIndexSet ();</div><div class="line"> <span class="keyword">int</span> row = <span class="number">-1</span>;</div><div class="line"> </div><div class="line"> <span class="comment">// get indexSet and row</span></div><div class="line"> <span class="keyword">if</span> (<span class="keyword">this</span>.Superview.GetType () == <span class="keyword">typeof</span>(TBTableView)) {</div><div class="line"> indexSet = (<span class="keyword">this</span>.Superview <span class="keyword">as</span> TBTableView).SelectedRows;</div><div class="line"> row = (<span class="keyword">this</span>.Superview <span class="keyword">as</span> TBTableView).RowForView (<span class="keyword">this</span>);</div><div class="line"> }</div><div class="line"> <span class="keyword">else</span> <span class="keyword">if</span> (<span class="keyword">this</span>.Superview.GetType () == <span class="keyword">typeof</span> (TBOutlineViewEx)) {</div><div class="line"> indexSet = (<span class="keyword">this</span>.Superview <span class="keyword">as</span> TBOutlineViewEx).SelectedRows;</div><div class="line"> row = (<span class="keyword">this</span>.Superview <span class="keyword">as</span> TBOutlineViewEx).RowForView (<span class="keyword">this</span>);</div><div class="line"> }</div><div class="line"> <span class="keyword">else</span> <span class="keyword">if</span> (<span class="keyword">this</span>.Superview.GetType () == <span class="keyword">typeof</span> (TBOutlineView)) {</div><div class="line"> indexSet = (<span class="keyword">this</span>.Superview <span class="keyword">as</span> TBOutlineView).SelectedRows;</div><div class="line"> row = (<span class="keyword">this</span>.Superview <span class="keyword">as</span> TBOutlineView).RowForView (<span class="keyword">this</span>);</div><div class="line"> backgroundColor = TBTheme.ThemeColor;</div><div class="line"> }</div><div class="line"> </div><div class="line"> <span class="comment">// fill color</span></div><div class="line"> <span class="keyword">if</span> (indexse.Contains ((<span class="keyword">uint</span>)row)) {</div><div class="line"> backgroundColor.Set ();</div><div class="line"> path.Fill ();</div><div class="line"> } <span class="keyword">else</span> <span class="keyword">if</span> (<span class="keyword">this</span>.IsHovered) {</div><div class="line"> TBTheme.ThemeColorWithAlpha (<span class="number">0.2</span>f).Set ();</div><div class="line"> path.Fill ();</div><div class="line"> }</div><div class="line"> }</div><div class="line">}</div></pre></td></tr></table></figure>
<h3 id="如果NSTableView或着NSOutlineView中的SelectionHighlightStyle没有设置为None，那么还需要覆写DrawSelection方法"><a href="#如果NSTableView或着NSOutlineView中的SelectionHighlightStyle没有设置为None，那么还需要覆写DrawSelection方法" class="headerlink" title="如果NSTableView或着NSOutlineView中的SelectionHighlightStyle没有设置为None，那么还需要覆写DrawSelection方法"></a>如果NSTableView或着NSOutlineView中的SelectionHighlightStyle没有设置为None，那么还需要覆写DrawSelection方法</h3><figure class="highlight cs"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">public</span> ovrride <span class="keyword">void</span> <span class="title">DrawSelection</span> (<span class="params">RectangleF dirtyRect</span>)</span></div><div class="line">{</div><div class="line"> <span class="comment">// base.DrawSelection (dirtyRect);</span></div><div class="line">}</div></pre></td></tr></table></figure>
<h3 id="覆写Delegate中的RowViewForItem方法"><a href="#覆写Delegate中的RowViewForItem方法" class="headerlink" title="覆写Delegate中的RowViewForItem方法"></a>覆写Delegate中的RowViewForItem方法</h3><figure class="highlight cs"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">public</span> ovrride NSTableRowView <span class="title">RowViewForItem</span> (<span class="params">NSOutlineView outlineView, NSObject item</span>)</span></div><div class="line">{</div><div class="line"> <span class="keyword">string</span> identity = item.Handle.ToString ();</div><div class="line"> NSView view = outlineView.MakeView (identity, <span class="keyword">this</span>);</div><div class="line"> <span class="keyword">if</span> (view == <span class="literal">null</span>) {</div><div class="line"> TBTableRowView rowView = <span class="keyword">new</span> TBTableRowView ();</div><div class="line"> rowView.Identifier = identity;</div><div class="line"> view = rowView;</div><div class="line"> }</div><div class="line"> <span class="keyword">return</span> view <span class="keyword">as</span> TBTableRowView;</div><div class="line">}</div></pre></td></tr></table></figure>
]]></content>
<summary type="html">
<p><code>NSTableView</code>和<code>NSOutlineView</code>的显示方式有两种，分别是<code>Cell Based</code>和<code>View Based</code>。前者需要重绘<code>Cell</code>来实现高度自定义；后者可以直接添加控件到<code>View</code>中，用起来比较简单，所以也比较常用。</p>
<h2 id="Cell-Based"><a href="#Cell-Based" class="headerlink" title="Cell Based"></a>Cell Based</h2><h3 id="覆写NSTableView或着NSOutlineView中的HighlightSelection方法"><a href="#覆写NSTableView或着NSOutlineView中的HighlightSelection方法" class="headerlink" title="覆写NSTableView或着NSOutlineView中的HighlightSelection方法"></a>覆写NSTableView或着NSOutlineView中的HighlightSelection方法</h3><figure class="highlight cs"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">public</span> ovrride <span class="keyword">void</span> <span class="title">HighlightSelection</span> (<span class="params">RectangleF clipRect</span>)</span></div><div class="line">&#123;</div><div class="line"> NSRange aVisibleRowIndexs = <span class="keyword">this</span>.RowsInRect (clipRect);</div><div class="line"> </div><div class="line"> NSIndexSet aSelectRowIndexs = <span class="keyword">this</span>.SelectedRows;</div><div class="line"> <span class="keyword">int</span> aRow = aVisibleRowIndexs.Location;</div><div class="line"> <span class="keyword">int</span> aEndRow = aRow + aVisibleRowIndexs.Length;</div><div class="line"> </div><div class="line"> <span class="comment">// 控制是否获得焦点的颜色</span></div><div class="line"> <span class="comment">// NSGradient gradient;</span></div><div class="line"> <span class="comment">// if (this == this.Window.FirstResponder &amp;&amp; this.Window.IsMainWindow &amp;&amp; this.Window.IsKeyWindow) &#123;</span></div><div class="line"> <span class="comment">// gradient = new NSGradient (new NSColor[] &#123; TBTheme.ThemeColorWithAlpha (0.5f) &#125;);</span></div><div class="line"> <span class="comment">// &#125; else &#123;</span></div><div class="line"> <span class="comment">// gradient = new NSGradient (new NSColor[] &#123; TBTheme.ThemeColorWithAlpha (0.8f) &#125;);</span></div><div class="line"> <span class="comment">// &#125;</span></div><div class="line"> </div><div class="line"> <span class="keyword">for</span> (; arow &lt; aEndRow; aRow++) &#123;</div><div class="line"> <span class="keyword">if</span> (aSelectRowIndexs.Contains ((<span class="keyword">uint</span>)aRow)) &#123;</div><div class="line"> RectangleF aRowRect = <span class="keyword">this</span>.RectForRow (aRow);</div><div class="line"> TBTheme.LightThemeColor.Set ();</div><div class="line"> NSGraphics.RectFill (aRowRect);</div><div class="line"> &#125;</div><div class="line"> &#125;</div><div class="line">&#125;</div></pre></td></tr></table></figure>
<h3 id="覆写NSTextFieldCell中的HighlightColor方法"><a href="#覆写NSTextFieldCell中的HighlightColor方法" class="headerlink" title="覆写NSTextFieldCell中的HighlightColor方法"></a>覆写NSTextFieldCell中的HighlightColor方法</h3><figure class="highlight cs"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">public</span> ovrride NSColor <span class="title">HighlightColor</span> (<span class="params">RectangleF cellFrame, NSView controlView</span>)</span></div><div class="line">&#123;</div><div class="line"> <span class="keyword">return</span> TBTheme.LightThemeColor;</div><div class="line">&#125;</div></pre></td></tr></table></figure>
</summary>
<category term="Mono" scheme="https://shalyf.github.io/categories/Mono/"/>
<category term="macOS" scheme="https://shalyf.github.io/tags/macOS/"/>
<category term="C#" scheme="https://shalyf.github.io/tags/C/"/>
</entry>
<entry>
<title>Mono中各个控件的拖拽实现</title>
<link href="https://shalyf.github.io/2015/nsoutlineview-drag-drop/"/>
<id>https://shalyf.github.io/2015/nsoutlineview-drag-drop/</id>
<published>2015-11-13T06:11:20.000Z</published>
<updated>2017-07-15T15:05:53.000Z</updated>
<content type="html"><![CDATA[<h2 id="NSOutlineView实现拖拽功能"><a href="#NSOutlineView实现拖拽功能" class="headerlink" title="NSOutlineView实现拖拽功能"></a>NSOutlineView实现拖拽功能</h2><h3 id="注册拖拽类型"><a href="#注册拖拽类型" class="headerlink" title="注册拖拽类型"></a>注册拖拽类型</h3><p>在<code>OutlineView</code>的<code>AwakeFromNib</code>中注册</p>
<figure class="highlight cs"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">public</span> <span class="keyword">override</span> <span class="keyword">void</span> <span class="title">AwakeFromNib</span>(<span class="params"></span>)</span></div><div class="line">{</div><div class="line"> <span class="keyword">base</span>.AwakeFromNib();</div><div class="line"> </div><div class="line"> <span class="keyword">this</span>.RegisterForDraggedTypes (<span class="keyword">new</span> <span class="keyword">string</span>[] {</div><div class="line"> NSPasteboard.NSFilenamesType.ToString (),</div><div class="line"> NSPasteboard.NSUrlType.ToString (),</div><div class="line"> NSPasteboard.NSDragPasteboardName.ToString (),</div><div class="line"> NSPasteboard.NSStringType.ToString (),</div><div class="line"> NSPasteboard.NSFilesPromiseType.ToString ()</div><div class="line"> });</div><div class="line"> </div><div class="line"> <span class="keyword">this</span>.SetDraggingSourceOperationMask (NSDragOperation.All, <span class="literal">false</span>);</div><div class="line"> <span class="keyword">this</span>.AllowsMultipleSelection = <span class="literal">true</span>;</div><div class="line">}</div></pre></td></tr></table></figure>
<p><code>RegisterForDraggedTypes</code>注册拖动类型，仅有注册的类型才能完成控件内的拖动（有拖动特效），如果是要拖动到控件以外的地方，则可以不用注册。<br><code>SetDraggingSourceOperationMask</code>设置拖动源操作，没有设置的话将不会呼起必须的拖动方法，特别注意第二个参数，置为<code>true</code>表示拖动只能在控件内，置为<code>false</code>表示可以拖动到控件以外。如果需要拖动到桌面等其他文件夹，一定要置为<code>false</code>。</p>
<h3 id="实现OutlineViewwriteItemstoPasteboard方法（在DataSource中）"><a href="#实现OutlineViewwriteItemstoPasteboard方法（在DataSource中）" class="headerlink" title="实现OutlineViewwriteItemstoPasteboard方法（在DataSource中）"></a>实现OutlineViewwriteItemstoPasteboard方法（在DataSource中）</h3><figure class="highlight cs"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">public</span> <span class="keyword">override</span> <span class="keyword">bool</span> <span class="title">OutlineViewwriteItemstoPasteboard</span> (<span class="params">NSOutlineView outlineView, NSArray items, NSPasteboard pboard</span>)</span></div><div class="line">{</div><div class="line"> pboard.DeclareTypes (<span class="keyword">new</span> <span class="keyword">string</span>[] {</div><div class="line"> NSPasteboard.NSFilesPromiseType.ToString () }, <span class="literal">null</span>);</div><div class="line"> <span class="keyword">string</span>[] types = <span class="keyword">new</span> <span class="keyword">string</span>[<span class="number">1</span>] { <span class="string">""</span> };</div><div class="line"> NSArray list = NSArray.FromStrings (types);</div><div class="line"> pboard.SetPropertyListForType (list, NSPasteboard.NSFilesPromiseType.ToString ());</div><div class="line"> <span class="keyword">return</span> <span class="literal">true</span>;</div><div class="line">}</div></pre></td></tr></table></figure>
<a id="more"></a>
<p>其中<code>pboard.DeclareTypes</code>声明拖拽类型。<br><code>pboard.SetStringForType</code>或<code>pboard.SetDataForType</code>设置拖动的内容。案例使用<code>SetPropertyListForType</code>为粘贴板设置一个列表内容。<br>当拖动类型为<code>NSPasteboard.NSFilenamesType</code>时，<code>list</code>中存储的<code>url</code>必须是针对本机有效的，如果用了无效的<code>url</code>，将无法完成拖动。<br>当拖动类型为<code>NSPasteboard.NSFilesPromiseType</code>时，<code>list</code>可以随便填，但是不能为空，该方法还没有完全理透，不过已经可以通过这个方法来获取目标<code>Url</code>。使用这种拖动类型将会呼起<code>FilesDropped</code>方法，通过该方法就能获得目标<code>Url</code>。</p>
<h3 id="实现DragImage方法（在控件中，需要重写控件，也可以不实现，使用父类方法）"><a href="#实现DragImage方法（在控件中，需要重写控件，也可以不实现，使用父类方法）" class="headerlink" title="实现DragImage方法（在控件中，需要重写控件，也可以不实现，使用父类方法）"></a>实现DragImage方法（在控件中，需要重写控件，也可以不实现，使用父类方法）</h3><figure class="highlight cs"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">public</span> <span class="keyword">override</span> <span class="keyword">void</span> <span class="title">DragImage</span> (<span class="params">NSImage anImage, PointF viewLocation, SizeF initialOffset, NSEvent theEvent, NSPasteboard pboard, NSObject sourceObj, <span class="keyword">bool</span> slideFlag</span>)</span></div><div class="line">{</div><div class="line"> anImage = NSWorkspace.SharedWorkspace.IconForFile (<span class="string">"/Applications/Tongbu.app"</span>);</div><div class="line"> viewLocation = <span class="keyword">this</span>.ConvertPointFromView (theEvent.LocationInWindow, <span class="literal">null</span>);</div><div class="line"> viewLocation.X -= <span class="number">16</span>;</div><div class="line"> viewLocation.Y -= <span class="number">16</span>;</div><div class="line"></div><div class="line"> <span class="keyword">base</span>.DragImage (anImage, viewLocation, initialOffset, theEvent, pboard, sourceObj, slideFlag);</div><div class="line">}</div></pre></td></tr></table></figure>
<p><code>anImage</code>设置拖动时显示的图标，<code>viewLocation</code>设置图标显示的位置。<br>然后调用父类的<code>DragImage</code>方法完成。</p>
<h3 id="实现FilesDropped方法（在DataSource中）"><a href="#实现FilesDropped方法（在DataSource中）" class="headerlink" title="实现FilesDropped方法（在DataSource中）"></a>实现FilesDropped方法（在DataSource中）</h3><p>使用<code>NSPasteboard.NSFilesPromiseType</code>拖动类型时触发<br>如果拖动源不是本机有效的<code>Url</code>，使用<code>NSPasteboard.NSFilenamesType</code>是不允许拖动的，这时候就要用到<code>NSPasteboard.NSFilesPromiseType</code>了。</p>
<figure class="highlight cs"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">public</span> <span class="keyword">override</span> <span class="keyword">string</span>[] <span class="title">FilesDropped</span> (<span class="params">NSOutlineView outlineView, NSUrl dropDestination, NSArray items</span>)</span></div><div class="line">{</div><div class="line"> Console.WriteLine (<span class="string">"dropDestination = "</span> + dropDestination.Path);</div><div class="line"> <span class="keyword">return</span> <span class="keyword">new</span> <span class="keyword">string</span>[] { <span class="string">""</span> } ;</div><div class="line">}</div></pre></td></tr></table></figure>
<p><code>dropDestination</code>为目标<code>Url</code>，获取该<code>Url</code>，就能通过其他手段将需要的文件复制到目的地了。</p>
<h2 id="NSBrowser实现拖拽功能"><a href="#NSBrowser实现拖拽功能" class="headerlink" title="NSBrowser实现拖拽功能"></a>NSBrowser实现拖拽功能</h2><p>知道了<code>NSOutlinView</code>的拖拽实现，<code>NSBrowser</code>也就简单了，只需要找到触发拖动的事件和完成拖动的事件，实现它们就可以了。</p>
<h3 id="注册拖拽类型（同NSOutlineView）"><a href="#注册拖拽类型（同NSOutlineView）" class="headerlink" title="注册拖拽类型（同NSOutlineView）"></a>注册拖拽类型（同NSOutlineView）</h3><h3 id="实现WriteRowsWithIndexesToPasteboard方法（在Delegate中）"><a href="#实现WriteRowsWithIndexesToPasteboard方法（在Delegate中）" class="headerlink" title="实现WriteRowsWithIndexesToPasteboard方法（在Delegate中）"></a>实现WriteRowsWithIndexesToPasteboard方法（在Delegate中）</h3><figure class="highlight cs"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">public</span> <span class="keyword">override</span> <span class="keyword">bool</span> <span class="title">WriteRowsWithIndexesToPasteboard</span> (<span class="params">NSBrowser browser, NSIndexSet rowIndexes, <span class="keyword">int</span> column, NSPasteboard pasteboard</span>)</span></div><div class="line">{</div><div class="line"> <span class="keyword">string</span>[] temp = <span class="keyword">new</span> <span class="keyword">string</span>[<span class="number">1</span>]{<span class="string">""</span>};</div><div class="line"> NSArray fileList = NSArray.FromStrings (temp);</div><div class="line"> pasteboard.DeclareTypes (<span class="keyword">new</span> <span class="keyword">string</span>[] { NSPasteboard.NSFilesPromiseType.ToString() }, <span class="literal">null</span>);</div><div class="line"> pasteboard.SetPropertyListForType (fileList, NSPasteboard.NSFilesPromiseType.ToString());</div><div class="line"> <span class="keyword">return</span> <span class="literal">true</span>;</div><div class="line">}</div></pre></td></tr></table></figure>
<h3 id="实现DragImage方法（同NSOutlineView）"><a href="#实现DragImage方法（同NSOutlineView）" class="headerlink" title="实现DragImage方法（同NSOutlineView）"></a>实现DragImage方法（同NSOutlineView）</h3><h3 id="实现PromisedFilesDroppedAtDestination方法（在Delegate中）"><a href="#实现PromisedFilesDroppedAtDestination方法（在Delegate中）" class="headerlink" title="实现PromisedFilesDroppedAtDestination方法（在Delegate中）"></a>实现PromisedFilesDroppedAtDestination方法（在Delegate中）</h3><figure class="highlight cs"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">public</span> <span class="keyword">override</span> <span class="keyword">string</span>[] <span class="title">PromisedFilesDroppedAtDestination</span> (<span class="params">NSBrowser browser, NSUrl dropDestination, NSIndexSet rowIndexes, <span class="keyword">int</span> column</span>)</span></div><div class="line">{</div><div class="line"> Console.WriteLine (<span class="string">"dropDestination = "</span> + dropDestination.Path);</div><div class="line"> Console.WriteLine (rowIndexes.ToString());</div><div class="line"> <span class="keyword">return</span> <span class="keyword">new</span> <span class="keyword">string</span>[]{<span class="string">""</span>} ;</div><div class="line">}</div></pre></td></tr></table></figure>
<h2 id="IKImageBrowserView实现拖拽功能"><a href="#IKImageBrowserView实现拖拽功能" class="headerlink" title="IKImageBrowserView实现拖拽功能"></a>IKImageBrowserView实现拖拽功能</h2><p>写入粘贴板的方法与<code>NSTableView</code>类似，使用<code>WriteItemsToPasteboard</code><br>完成拖动的方法因为<code>Mono</code>没有实现<code>PromisedFilesDroppedAtDestination</code>方法，需要映射。</p>
<figure class="highlight cs"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div></pre></td><td class="code"><pre><div class="line">[<span class="meta">Export (<span class="meta-string">"namesOfPromisedFilesDroppedAtDestination: "</span>)</span>]</div><div class="line"><span class="function">Public <span class="keyword">string</span>[] <span class="title">NamesOfPromisedFliesDroppedAtDestination</span> (<span class="params">NSUrl dropDestination</span>)</span></div><div class="line">{</div><div class="line"> Console.WriteLine (<span class="string">"dropDestination = "</span> + dropDestination.Path);</div><div class="line"> <span class="keyword">return</span> <span class="keyword">new</span> <span class="keyword">string</span>[]{<span class="string">""</span>} ;</div><div class="line">}</div></pre></td></tr></table></figure>
]]></content>
<summary type="html">
<h2 id="NSOutlineView实现拖拽功能"><a href="#NSOutlineView实现拖拽功能" class="headerlink" title="NSOutlineView实现拖拽功能"></a>NSOutlineView实现拖拽功能</h2><h3 id="注册拖拽类型"><a href="#注册拖拽类型" class="headerlink" title="注册拖拽类型"></a>注册拖拽类型</h3><p>在<code>OutlineView</code>的<code>AwakeFromNib</code>中注册</p>
<figure class="highlight cs"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">public</span> <span class="keyword">override</span> <span class="keyword">void</span> <span class="title">AwakeFromNib</span>(<span class="params"></span>)</span></div><div class="line">&#123;</div><div class="line"> <span class="keyword">base</span>.AwakeFromNib();</div><div class="line"> </div><div class="line"> <span class="keyword">this</span>.RegisterForDraggedTypes (<span class="keyword">new</span> <span class="keyword">string</span>[] &#123;</div><div class="line"> NSPasteboard.NSFilenamesType.ToString (),</div><div class="line"> NSPasteboard.NSUrlType.ToString (),</div><div class="line"> NSPasteboard.NSDragPasteboardName.ToString (),</div><div class="line"> NSPasteboard.NSStringType.ToString (),</div><div class="line"> NSPasteboard.NSFilesPromiseType.ToString ()</div><div class="line"> &#125;);</div><div class="line"> </div><div class="line"> <span class="keyword">this</span>.SetDraggingSourceOperationMask (NSDragOperation.All, <span class="literal">false</span>);</div><div class="line"> <span class="keyword">this</span>.AllowsMultipleSelection = <span class="literal">true</span>;</div><div class="line">&#125;</div></pre></td></tr></table></figure>
<p><code>RegisterForDraggedTypes</code>注册拖动类型，仅有注册的类型才能完成控件内的拖动（有拖动特效），如果是要拖动到控件以外的地方，则可以不用注册。<br><code>SetDraggingSourceOperationMask</code>设置拖动源操作，没有设置的话将不会呼起必须的拖动方法，特别注意第二个参数，置为<code>true</code>表示拖动只能在控件内，置为<code>false</code>表示可以拖动到控件以外。如果需要拖动到桌面等其他文件夹，一定要置为<code>false</code>。</p>
<h3 id="实现OutlineViewwriteItemstoPasteboard方法（在DataSource中）"><a href="#实现OutlineViewwriteItemstoPasteboard方法（在DataSource中）" class="headerlink" title="实现OutlineViewwriteItemstoPasteboard方法（在DataSource中）"></a>实现OutlineViewwriteItemstoPasteboard方法（在DataSource中）</h3><figure class="highlight cs"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div></pre></td><td class="code"><pre><div class="line"><span class="function"><span class="keyword">public</span> <span class="keyword">override</span> <span class="keyword">bool</span> <span class="title">OutlineViewwriteItemstoPasteboard</span> (<span class="params">NSOutlineView outlineView, NSArray items, NSPasteboard pboard</span>)</span></div><div class="line">&#123;</div><div class="line"> pboard.DeclareTypes (<span class="keyword">new</span> <span class="keyword">string</span>[] &#123;</div><div class="line"> NSPasteboard.NSFilesPromiseType.ToString () &#125;, <span class="literal">null</span>);</div><div class="line"> <span class="keyword">string</span>[] types = <span class="keyword">new</span> <span class="keyword">string</span>[<span class="number">1</span>] &#123; <span class="string">""</span> &#125;;</div><div class="line"> NSArray list = NSArray.FromStrings (types);</div><div class="line"> pboard.SetPropertyListForType (list, NSPasteboard.NSFilesPromiseType.ToString ());</div><div class="line"> <span class="keyword">return</span> <span class="literal">true</span>;</div><div class="line">&#125;</div></pre></td></tr></table></figure>
</summary>
<category term="Mono" scheme="https://shalyf.github.io/categories/Mono/"/>
<category term="macOS" scheme="https://shalyf.github.io/tags/macOS/"/>
<category term="C#" scheme="https://shalyf.github.io/tags/C/"/>
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