forked from AuroraMiddleware/gtk
357 lines
5.0 KiB
Plaintext
357 lines
5.0 KiB
Plaintext
<!-- ##### SECTION Title ##### -->
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Drawing Primitives
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<!-- ##### SECTION Short_Description ##### -->
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Functions for drawing points, lines, arcs, and text
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<!-- ##### SECTION Long_Description ##### -->
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<para>
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These functions provide support for drawing points, lines, arcs and text
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onto what are called 'drawables'. Drawables, as the name suggests, are things
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which support drawing onto them, and are either #GdkWindow or #GdkPixmap
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objects.
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</para>
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<para>
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Many of the drawing operations take a #GdkGC argument, which represents a
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graphics context. This #GdkGC contains a number of drawing attributes such
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as foreground color, background color and line width, and is used to reduce
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the number of arguments needed for each drawing operation. See the
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<link linkend="gdk-Graphics-Contexts">Graphics Contexts</link> section for
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more information.
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</para>
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<para id="pango-data-structures">
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Some of the drawing operations take Pango data structures like #PangoContext,
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#PangoLayout or #PangoLayoutLine as arguments. If you're using GTK+, the ususal
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way to obtain these structures is via gtk_widget_create_pango_context() or
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gtk_widget_create_pango_layout().
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</para>
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<!-- ##### SECTION See_Also ##### -->
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<para>
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</para>
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<!-- ##### SECTION Stability_Level ##### -->
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<!-- ##### SECTION Image ##### -->
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<!-- ##### STRUCT GdkDrawable ##### -->
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<para>
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An opaque structure representing an object that can be
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drawn onto. This can be a #GdkPixmap, a #GdkBitmap,
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or a #GdkWindow.
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</para>
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<!-- ##### FUNCTION gdk_drawable_get_display ##### -->
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<para>
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</para>
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@drawable:
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@Returns:
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<!-- ##### FUNCTION gdk_drawable_get_screen ##### -->
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<para>
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</para>
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@drawable:
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@Returns:
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<!-- ##### FUNCTION gdk_drawable_get_visual ##### -->
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<para>
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</para>
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@drawable:
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@Returns:
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<!-- ##### FUNCTION gdk_drawable_set_colormap ##### -->
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<para>
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</para>
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@drawable:
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@colormap:
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<!-- ##### FUNCTION gdk_drawable_get_colormap ##### -->
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<para>
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</para>
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@drawable:
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@Returns:
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<!-- ##### FUNCTION gdk_drawable_get_depth ##### -->
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<para>
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</para>
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@drawable:
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@Returns:
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<!-- ##### FUNCTION gdk_drawable_get_size ##### -->
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<para>
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</para>
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@drawable:
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@width:
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@height:
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<!-- ##### FUNCTION gdk_drawable_get_clip_region ##### -->
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<para>
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</para>
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@drawable:
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@Returns:
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<!-- ##### FUNCTION gdk_drawable_get_visible_region ##### -->
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<para>
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</para>
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@drawable:
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@Returns:
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<!-- ##### FUNCTION gdk_draw_point ##### -->
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<para>
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</para>
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@drawable:
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@gc:
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@x:
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@y:
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<!-- ##### FUNCTION gdk_draw_points ##### -->
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<para>
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</para>
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@drawable:
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@gc:
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@points:
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@n_points:
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<!-- ##### FUNCTION gdk_draw_line ##### -->
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<para>
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</para>
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@drawable:
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@gc:
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@x1_:
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@y1_:
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@x2_:
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@y2_:
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<!-- ##### FUNCTION gdk_draw_lines ##### -->
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<para>
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</para>
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@drawable:
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@gc:
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@points:
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lines.
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@n_points:
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<!-- ##### FUNCTION gdk_draw_segments ##### -->
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<para>
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</para>
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@drawable:
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@gc:
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@segs:
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@n_segs:
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<!-- ##### STRUCT GdkSegment ##### -->
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<para>
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Specifies the start and end point of a line for use by the gdk_draw_segments()
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function.
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</para>
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@x1: the x coordinate of the start point.
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@y1: the y coordinate of the start point.
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@x2: the x coordinate of the end point.
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@y2: the y coordinate of the end point.
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<!-- ##### FUNCTION gdk_draw_rectangle ##### -->
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<para>
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</para>
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<note>
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<para>
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</para>
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</note>
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@drawable:
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@gc:
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@filled:
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@x:
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@y:
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@width:
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@height:
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<!-- ##### FUNCTION gdk_draw_arc ##### -->
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<para>
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</para>
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@drawable:
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@gc:
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@filled:
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@x:
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@y:
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@width:
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@height:
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@angle1:
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@angle2:
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<!-- ##### FUNCTION gdk_draw_polygon ##### -->
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<para>
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</para>
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@drawable:
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@gc:
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@filled:
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@points:
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@n_points:
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<!-- ##### FUNCTION gdk_draw_trapezoids ##### -->
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<para>
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</para>
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@drawable:
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@gc:
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@trapezoids:
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@n_trapezoids:
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<!-- ##### STRUCT GdkTrapezoid ##### -->
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<para>
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Specifies a trapezpoid for use by the gdk_draw_trapezoids().
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The trapezoids used here have parallel, horizontal top and
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bottom edges.
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</para>
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@y1: the y coordinate of the start point.
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@x11: the x coordinate of the top left corner
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@x21: the x coordinate of the top right corner
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@y2: the y coordinate of the end point.
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@x12: the x coordinate of the bottom left corner
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@x22: the x coordinate of the bottom right corner
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<!-- ##### FUNCTION gdk_draw_glyphs ##### -->
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<para>
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</para>
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@drawable:
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@gc:
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@font:
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@x:
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@y:
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@glyphs:
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<!-- ##### FUNCTION gdk_draw_glyphs_transformed ##### -->
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<para>
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</para>
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@drawable:
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@gc:
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@matrix:
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@font:
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@x:
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@y:
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@glyphs:
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<!-- ##### FUNCTION gdk_draw_layout_line ##### -->
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<para>
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</para>
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@drawable:
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@gc:
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@x:
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@y:
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@line:
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<!-- ##### FUNCTION gdk_draw_layout_line_with_colors ##### -->
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<para>
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</para>
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@drawable:
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@gc:
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@x:
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@y:
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@line:
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@foreground:
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@background:
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<!-- ##### FUNCTION gdk_draw_layout ##### -->
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<para>
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</para>
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@drawable:
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@gc:
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@x:
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@y:
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@layout:
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<!-- ##### FUNCTION gdk_draw_layout_with_colors ##### -->
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<para>
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</para>
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@drawable:
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@gc:
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@x:
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@y:
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@layout:
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@foreground:
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@background:
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<!-- ##### FUNCTION gdk_draw_drawable ##### -->
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<para>
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</para>
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@drawable:
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@gc:
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@src:
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@xsrc:
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@ysrc:
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@xdest:
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@ydest:
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@width:
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@height:
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