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  • Committer: Bazaar Package Importer
  • Author(s): Fabien Tassin
  • Date: 2008-09-25 16:22:33 UTC
  • mfrom: (1.1.9 upstream)
  • Revision ID: james.westby@ubuntu.com-20080925162233-btx61ymk181i7mcc
Tags: 1.7.6-0ubuntu1
* New upstream version. Most noticable changes are:
  - some API changes with especially the removal of
    cairo_font_options_set_lcd_filter and cairo_font_options_get_lcd_filter
  - xlib: Faster bookkeeping
  - PS: Fix gradients with non-constant alpha
  - Fix deadlock in user-font code
* debian/patches/00list: Remove 03_from_git_fix_lcd_filter_default.dpatch,
  add debian/patches/03_fix_ftbfs_withing_xcb.dpatch
* debian/libcairo2.symbols, debian/libcairo-directfb2.symbols: update
  list of symbols

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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>Overloading and optional arguments</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.74.0">
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<link rel="home" href="index.html" title="Cairo: A Vector Graphics Library">
 
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2">
 
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<link rel="start" href="index.html" title="Cairo: A Vector Graphics Library">
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<link rel="up" href="language-bindings.html" title="Appendix A. Creating a language binding for cairo">
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<link rel="prev" href="bindings-return-values.html" title="Multiple return values">
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<link rel="next" href="bindings-streams.html" title="Streams and File I/O">
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<meta name="generator" content="GTK-Doc V1.10 (XML mode)">
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<link rel="stylesheet" href="style.css" type="text/css">
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<link rel="chapter" href="Drawing.html" title="Drawing">
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<link rel="chapter" href="Fonts.html" title="Fonts">
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<link rel="chapter" href="Surfaces.html" title="Surfaces">
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<link rel="chapter" href="Support.html" title="Utilities">
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<link rel="index" href="ix01.html" title="Index">
 
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<link rel="chapter" href="cairo-drawing.html" title="Drawing">
 
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<link rel="chapter" href="cairo-fonts.html" title="Fonts">
 
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<link rel="chapter" href="cairo-surfaces.html" title="Surfaces">
 
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<link rel="chapter" href="cairo-support.html" title="Utilities">
 
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<link rel="index" href="index-all.html" title="Index">
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<link rel="index" href="index-1.2.html" title="Index of new symbols in 1.2">
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<link rel="index" href="index-1.4.html" title="Index of new symbols in 1.4">
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<link rel="index" href="index-1.6.html" title="Index of new symbols in 1.6">
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      overloading. What may seem like an obvious overload now may
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      turn out to be strange with future additions to cairo.
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      It might seem logical to make
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      <a class="link" href="cairo-cairo-t.html#cairo-set-source-rgb" title="cairo_set_source_rgb ()"><code class="function">cairo_set_source_rgb()</code></a>
 
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      <a class="link" href="cairo-context.html#cairo-set-source-rgb" title="cairo_set_source_rgb ()"><code class="function">cairo_set_source_rgb()</code></a>
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        an overload of <code class="function">cairo_set_source()</code>, but future plans to add
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        <code class="function">cairo_set_source_rgb_premultiplied()</code>,
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      which will also take three doubles make this a bad idea. For
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<p>
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      Note that there are cases where all constructors for a type
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      aren't overloaded together. For example
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      <a class="link" href="cairo-PNG-Support.html#cairo-image-surface-create-from-png" title="cairo_image_surface_create_from_png ()"><code class="function">cairo_image_surface_create_from_png()</code></a>
 
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      <a class="link" href="cairo-png-functions.html#cairo-image-surface-create-from-png" title="cairo_image_surface_create_from_png ()"><code class="function">cairo_image_surface_create_from_png()</code></a>
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      should <span class="emphasis"><em>not</em></span> be overloaded together with
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      <a class="link" href="cairo-Image-Surfaces.html#cairo-image-surface-create" title="cairo_image_surface_create ()"><code class="function">cairo_image_surface_create()</code></a>.
 
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      <a class="link" href="cairo-image-surface.html#cairo-image-surface-create" title="cairo_image_surface_create ()"><code class="function">cairo_image_surface_create()</code></a>.
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      In such cases, the remaining constructors will typically need to
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      be bound as static methods. In Java, for example, we might have:
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    </p>