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https://github.com/ToshioCP/Gtk4-tutorial.git
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248 lines
10 KiB
HTML
248 lines
10 KiB
HTML
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<body style="padding-top: 70px;">
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<div class="container">
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<nav class="navbar fixed-top navbar-expand-lg navbar-dark bg-primary">
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<div class="container-fluid">
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<span class="navbar-brand">Gtk4 tutorial</span>
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<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
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<span class="navbar-toggler-icon"></span>
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<div class="collapse navbar-collapse" id="navbarSupportedContent">
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<ul class="navbar-nav me-auto mb-2 mb-lg-0">
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<li class="nav-item">
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<a class="nav-link" href="index.html">Home</a>
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</ul>
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</div>
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</div>
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<div class="row justify-content-center">
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<div class="col-xl-10 col-xxl-9">
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<h1 id="tfetextview-api-reference">TfeTextView API reference</h1>
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<h2 id="description">Description</h2>
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<p>TfeTextView is a child object of GtkTextView. If its contents comes
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from a file, it holds the pointer to the GFile. Otherwise, the pointer
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is NULL.</p>
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<h2 id="hierarchy">Hierarchy</h2>
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<pre><code>GObject -- GInitiallyUnowned -- GtkWidget -- GtkTextView -- TfeTextView</code></pre>
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<h2 id="ancestors">Ancestors</h2>
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<ul>
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<li>GtkTextView</li>
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<li>GtkWidget</li>
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<li>GInitiallyUnowned</li>
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<li>GObject</li>
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</ul>
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<h2 id="constructors">Constructors</h2>
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<ul>
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<li>tfe_text_view_new ()</li>
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<li>tfe_text_view_new_with_file ()</li>
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</ul>
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<h2 id="instance-methods">Instance methods</h2>
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<ul>
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<li>tfe_text_view_get_file ()</li>
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<li>tfe_text_view_open ()</li>
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<li>tfe_text_view_save ()</li>
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<li>tfe_text_view_saveas ()</li>
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</ul>
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<h2 id="signals">Signals</h2>
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<ul>
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<li>Tfe.TextView::change-file</li>
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<li>Tfe.TextView::open-response</li>
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</ul>
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<h2 id="api-for-constructors-instance-methods-and-signals">API for
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constructors, instance methods and signals</h2>
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<p><strong>constructors</strong></p>
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<h3 id="tfe_text_view_new">tfe_text_view_new()</h3>
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<pre><code>GtkWidget *
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tfe_text_view_new (void);</code></pre>
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<p>Creates a new TfeTextView instance and returns the pointer to it as
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GtkWidget. If an error happens, it returns <code>NULL</code>.</p>
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<p>Return value</p>
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<ul>
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<li>a new TfeTextView.</li>
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</ul>
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<h3 id="tfe_text_view_new_with_file">tfe_text_view_new_with_file()</h3>
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<pre><code>GtkWidget *
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tfe_text_view_new_with_file (GFile *file);</code></pre>
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<p>Creates a new TfeTextView, reads the contents of the
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<code>file</code> and set it to the GtkTextBuffer corresponds to the
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newly created TfeTextView. Then returns the pointer to the TfeTextView
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as GtkWidget. If an error happens, it returns <code>NULL</code>.</p>
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<p>Parameters</p>
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<ul>
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<li>file: a GFile</li>
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</ul>
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<p>Return value</p>
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<ul>
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<li>a new TfeTextView.</li>
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</ul>
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<p><strong>Instance methods</strong></p>
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<h3 id="tfe_text_view_get_file">tfe_text_view_get_file()</h3>
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<pre><code>GFile *
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tfe_text_view_get_file (TfeTextView *tv);</code></pre>
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<p>Returns the copy of the GFile in the TfeTextView.</p>
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<p>Parameters</p>
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<ul>
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<li>tv: a TfeTextView</li>
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</ul>
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<p>Return value</p>
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<ul>
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<li>the pointer to the GFile</li>
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</ul>
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<h3 id="tfe_text_view_open">tfe_text_view_open()</h3>
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<pre><code>void
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tfe_text_view_open (TfeTextView *tv, GtkWidget *win);</code></pre>
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<p>Shows a file chooser dialog so that a user can choose a file to read.
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Then, read the file and set the buffer with the contents. This function
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doesn’t return the I/O status. Instead, the status is informed by
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<code>open-response</code> signal. The caller needs to set a handler to
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this signal in advance.</p>
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<p>parameters</p>
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<ul>
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<li>tv: a TfeTextView</li>
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<li>win: the top level window</li>
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</ul>
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<h3 id="tfe_text_view_save">tfe_text_view_save()</h3>
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<pre><code>void
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tfe_text_view_save (TfeTextView *tv);</code></pre>
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<p>Saves the contents of the buffer to the file. If <code>tv</code>
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holds a GFile, it is used. Otherwise, this function shows a file chooser
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dialog so that the user can choose a file to save.</p>
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<p>Parameters</p>
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<ul>
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<li>tv: a TfeTextView</li>
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</ul>
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<h3 id="tfe_text_view_saveas">tfe_text_view_saveas()</h3>
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<pre><code>void
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tfe_text_view_saveas (TfeTextView *tv);</code></pre>
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<p>Saves the contents of the buffer to a file. This function shows file
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chooser dialog so that a user can choose a file to save.</p>
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<p>Parameters</p>
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<ul>
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<li>tv: a TfeTextView</li>
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</ul>
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<p><strong>Signals</strong></p>
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<h3 id="change-file">change-file</h3>
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<pre><code>void
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user_function (TfeTextView *tv,
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gpointer user_data)</code></pre>
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<p>Emitted when the GFile in the TfeTextView object is changed. The
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signal is emitted when:</p>
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<ul>
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<li>a new file is opened and read</li>
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<li>a user chooses a file with the file chooser dialog and save the
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contents.</li>
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</ul>
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<h3 id="open-response">open-response</h3>
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<pre><code>void
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user_function (TfeTextView *tv,
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TfeTextViewOpenResponseType response-id,
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gpointer user_data)</code></pre>
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<p>Emitted after the user calls <code>tfe_text_view_open</code>. This
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signal informs the status of file I/O operation.</p>
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<p><strong>Enumerations</strong></p>
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<h3 id="tfetextviewopenresponsetype">TfeTextViewOpenResponseType</h3>
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<p>Predefined values for the response id given by
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<code>open-response</code> signal.</p>
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<p>Members:</p>
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<ul>
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<li>TFE_OPEN_RESPONSE_SUCCESS: The file is successfully opened.</li>
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<li>TFE_OPEN_RESPONSE_CANCEL: Reading file is canceled by the user.</li>
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<li>TFE_OPEN_RESPONSE_ERROR: An error happened during the opening or
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reading process.</li>
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</ul>
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</div>
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</div>
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</div>
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