New upstream version 3.23.2
This commit is contained in:
Andrea Azzarone
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>A checklist for widgets: GTK+ 3 Reference Manual</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
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<meta name="generator" content="DocBook XSL Stylesheets Vsnapshot">
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<link rel="home" href="index.html" title="GTK+ 3 Reference Manual">
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<link rel="up" href="gtk-migrating-GtkStyleContext.html" title="Theming changes">
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<link rel="prev" href="gtk-migrating-GtkStyleContext-css.html" title="Using the CSS file format">
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<link rel="next" href="gtk-migrating-GtkStyleContext-parsing.html" title="Parsing of custom resources">
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<meta name="generator" content="GTK-Doc V1.28 (XML mode)">
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</head>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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@ -44,56 +44,110 @@
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</p>
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<div class="example">
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<a name="id-1.6.4.7.3.2.2"></a><p class="title"><b>Example 46. Setting a permanent CSS class</b></p>
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<div class="example-contents"><pre class="programlisting">
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static void
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gtk_button_init (GtkButton *button)
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{
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GtkStyleContext *context;
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<div class="example-contents">
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<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
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<tbody>
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<tr>
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<td class="listing_lines" align="right"><pre>1
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12</pre></td>
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<td class="listing_code"><pre class="programlisting"><span class="keyword">static</span><span class="normal"> </span><span class="type">void</span>
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<span class="function">gtk_button_init</span><span class="normal"> </span><span class="symbol">(</span><span class="usertype">GtkButton</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">button</span><span class="symbol">)</span>
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<span class="cbracket">{</span>
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<span class="normal"> </span><span class="usertype">GtkStyleContext</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">context</span><span class="symbol">;</span>
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...
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<span class="normal"> </span><span class="symbol">...</span>
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context = gtk_widget_get_style_context (GTK_WIDGET (button));
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<span class="normal"> context </span><span class="symbol">=</span><span class="normal"> </span><span class="function"><a href="GtkWidget.html#gtk-widget-get-style-context">gtk_widget_get_style_context</a></span><span class="normal"> </span><span class="symbol">(</span><span class="function">GTK_WIDGET</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">button</span><span class="symbol">));</span>
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<span class="normal"> </span><span class="comment">/* Set the "button" class */</span>
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<span class="normal"> </span><span class="function"><a href="GtkStyleContext.html#gtk-style-context-add-class">gtk_style_context_add_class</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">,</span><span class="normal"> <a href="GtkStyleContext.html#GTK-STYLE-CLASS-BUTTON:CAPS">GTK_STYLE_CLASS_BUTTON</a></span><span class="symbol">);</span>
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<span class="cbracket">}</span></pre></td>
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</tr>
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</tbody>
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</table>
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</div>
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/* Set the "button" class */
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gtk_style_context_add_class (context, GTK_STYLE_CLASS_BUTTON);
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}
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</pre></div>
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</div>
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<br class="example-break"><p>
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Or
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</p>
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<div class="example">
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<a name="id-1.6.4.7.3.2.4"></a><p class="title"><b>Example 47. Using dynamic CSS classes for different elements</b></p>
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<div class="example-contents"><pre class="programlisting">
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static gboolean
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gtk_spin_button_draw (GtkSpinButton *spin,
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cairo_t *cr)
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{
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GtkStyleContext *context;
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<div class="example-contents">
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<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
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<tbody>
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<tr>
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<td class="listing_lines" align="right"><pre>1
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28</pre></td>
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<td class="listing_code"><pre class="programlisting"><span class="keyword">static</span><span class="normal"> gboolean</span>
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<span class="function">gtk_spin_button_draw</span><span class="normal"> </span><span class="symbol">(</span><span class="usertype">GtkSpinButton</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">spin</span><span class="symbol">,</span>
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<span class="normal"> </span><span class="usertype">cairo_t</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">cr</span><span class="symbol">)</span>
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<span class="cbracket">{</span>
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<span class="normal"> </span><span class="usertype">GtkStyleContext</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">context</span><span class="symbol">;</span>
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...
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<span class="normal"> </span><span class="symbol">...</span>
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context = gtk_widget_get_style_context (GTK_WIDGET (spin));
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<span class="normal"> context </span><span class="symbol">=</span><span class="normal"> </span><span class="function"><a href="GtkWidget.html#gtk-widget-get-style-context">gtk_widget_get_style_context</a></span><span class="normal"> </span><span class="symbol">(</span><span class="function">GTK_WIDGET</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">spin</span><span class="symbol">));</span>
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gtk_style_context_save (context);
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gtk_style_context_add_class (context, GTK_STYLE_CLASS_ENTRY);
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<span class="normal"> </span><span class="function"><a href="GtkStyleContext.html#gtk-style-context-save">gtk_style_context_save</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">);</span>
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<span class="normal"> </span><span class="function"><a href="GtkStyleContext.html#gtk-style-context-add-class">gtk_style_context_add_class</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">,</span><span class="normal"> <a href="GtkStyleContext.html#GTK-STYLE-CLASS-ENTRY:CAPS">GTK_STYLE_CLASS_ENTRY</a></span><span class="symbol">);</span>
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/* Call to entry draw impl with "entry" class */
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parent_class->draw (spin, cr);
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<span class="normal"> </span><span class="comment">/* Call to entry draw impl with "entry" class */</span>
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<span class="normal"> parent_class</span><span class="symbol">-></span><span class="function">draw</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">spin</span><span class="symbol">,</span><span class="normal"> cr</span><span class="symbol">);</span>
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gtk_style_context_restore (context);
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gtk_style_context_save (context);
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<span class="normal"> </span><span class="function"><a href="GtkStyleContext.html#gtk-style-context-restore">gtk_style_context_restore</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">);</span>
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<span class="normal"> </span><span class="function"><a href="GtkStyleContext.html#gtk-style-context-save">gtk_style_context_save</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">);</span>
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/* Render up/down buttons with the "button" class */
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gtk_style_context_add_class (context, GTK_STYLE_CLASS_BUTTON);
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draw_up_button (spin, cr);
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draw_down_button (spin, cr);
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<span class="normal"> </span><span class="comment">/* Render up/down buttons with the "button" class */</span>
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<span class="normal"> </span><span class="function"><a href="GtkStyleContext.html#gtk-style-context-add-class">gtk_style_context_add_class</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">,</span><span class="normal"> <a href="GtkStyleContext.html#GTK-STYLE-CLASS-BUTTON:CAPS">GTK_STYLE_CLASS_BUTTON</a></span><span class="symbol">);</span>
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<span class="normal"> </span><span class="function">draw_up_button</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">spin</span><span class="symbol">,</span><span class="normal"> cr</span><span class="symbol">);</span>
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<span class="normal"> </span><span class="function">draw_down_button</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">spin</span><span class="symbol">,</span><span class="normal"> cr</span><span class="symbol">);</span>
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gtk_style_context_restore (context);
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<span class="normal"> </span><span class="function"><a href="GtkStyleContext.html#gtk-style-context-restore">gtk_style_context_restore</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">);</span>
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<span class="normal"> </span><span class="symbol">...</span>
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<span class="cbracket">}</span></pre></td>
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</tr>
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</tbody>
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</table>
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</div>
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...
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}
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</pre></div>
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</div>
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<br class="example-break"><p>
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Note that <a class="link" href="GtkStyleContext.html" title="GtkStyleContext"><span class="type">GtkStyleContext</span></a> only provides fg/bg colors, so text/base
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@ -116,12 +170,23 @@
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</p>
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<div class="example">
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<a name="id-1.6.4.7.3.3.3"></a><p class="title"><b>Example 48. Rendering with a specific state</b></p>
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<div class="example-contents"><pre class="programlisting">
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gtk_style_context_save (context);
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gtk_style_context_set_state (context, GTK_STATE_FLAG_ACTIVE);
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gtk_render_check (context, cr, x, y, width, height);
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gtk_style_context_restore (context);
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</pre></div>
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<div class="example-contents">
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<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
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<tbody>
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<tr>
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<td class="listing_lines" align="right"><pre>1
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4</pre></td>
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<td class="listing_code"><pre class="programlisting"><span class="function"><a href="GtkStyleContext.html#gtk-style-context-save">gtk_style_context_save</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">);</span>
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<span class="function"><a href="GtkStyleContext.html#gtk-style-context-set-state">gtk_style_context_set_state</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">,</span><span class="normal"> <a href="gtk3-Standard-Enumerations.html#GTK-STATE-FLAG-ACTIVE:CAPS">GTK_STATE_FLAG_ACTIVE</a></span><span class="symbol">);</span>
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<span class="function"><a href="GtkStyleContext.html#gtk-render-check">gtk_render_check</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">,</span><span class="normal"> cr</span><span class="symbol">,</span><span class="normal"> x</span><span class="symbol">,</span><span class="normal"> y</span><span class="symbol">,</span><span class="normal"> width</span><span class="symbol">,</span><span class="normal"> height</span><span class="symbol">);</span>
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<span class="function"><a href="GtkStyleContext.html#gtk-style-context-restore">gtk_style_context_restore</a></span><span class="normal"> </span><span class="symbol">(</span><span class="normal">context</span><span class="symbol">);</span></pre></td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<br class="example-break"><p>
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For <a class="link" href="GtkStyleContext.html#gtk-render-check" title="gtk_render_check ()"><code class="function">gtk_render_check()</code></a> and <a class="link" href="GtkStyleContext.html#gtk-render-option" title="gtk_render_option ()"><code class="function">gtk_render_option()</code></a>, the <em class="parameter"><code>shadow_type</code></em>
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@ -150,6 +215,6 @@
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</ol></div>
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</div>
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<div class="footer">
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<hr>Generated by GTK-Doc V1.27</div>
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<hr>Generated by GTK-Doc V1.28</div>
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</body>
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</html>
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