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6436cd073d
This declares the interface types CoglFramebuffer, CoglBuffer, CoglTexture, CoglMetaTexture and CoglPrimitiveTexture as void when including the public cogl.h header so that users don't have to use lots of C type casts between instance types and interface types. This also removes all of the COGL_XYZ() type cast macros since they do nothing more than compile time type casting but it's less readable if you haven't seen that coding pattern before. Unlike with gobject based apis that use per-type macros for casting and performing runtime type checking we instead prefer to do our runtime type checking internally within the front-end public apis when objects are passed into Cogl. This greatly reduces the verbosity for users of the api and may help reduce the chance of excessive runtime type checking that can sometimes be a problem. (cherry picked from commit 248a76f5eac7e5ae4fb45208577f9a55360812a7) Since we can't break the 1.x api this version of the patch actually defines compatible NOP macros within deprecated/cogl-type-casts.h
293 lines
9.0 KiB
C
293 lines
9.0 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2008 OpenedHand
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* Copyright (C) 2012 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* Authors:
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* Neil Roberts <neil@linux.intel.com>
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* Robert Bragg <robert@linux.intel.com>
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* Matthew Allum <mallum@openedhand.com>
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*/
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#ifndef __COGL_PANGO_H__
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#define __COGL_PANGO_H__
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#include <glib-object.h>
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#include <pango/pango.h>
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#include <pango/pangocairo.h>
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/* XXX: Currently this header may be included both as an internal
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* header (within the cogl-pango implementation) and as a public
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* header.
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*
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* Since <cogl/cogl.h> should not be included for internal use we
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* determine the current context and switch between including cogl.h
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* or specific internal cogl headers here...
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*/
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#ifndef COGL_COMPILATION
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#include <cogl/cogl.h>
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#else
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#include "cogl/cogl-context.h"
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#endif
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COGL_BEGIN_DECLS
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/* It's too difficult to actually subclass the pango cairo font
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* map. Instead we just make a fake set of macros that actually just
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* directly use the original type
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*/
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#define COGL_PANGO_TYPE_FONT_MAP PANGO_TYPE_CAIRO_FONT_MAP
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#define COGL_PANGO_FONT_MAP(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), COGL_PANGO_TYPE_FONT_MAP, CoglPangoFontMap))
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#define COGL_PANGO_IS_FONT_MAP(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), COGL_PANGO_TYPE_FONT_MAP))
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typedef PangoCairoFontMap CoglPangoFontMap;
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/**
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* cogl_pango_font_map_new:
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*
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* Creates a new font map.
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*
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* Return value: (transfer full): the newly created #PangoFontMap
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*
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* Since: 1.14
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*/
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PangoFontMap *
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cogl_pango_font_map_new (void);
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/**
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* cogl_pango_font_map_create_context:
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* @font_map: a #CoglPangoFontMap
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*
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* Create a #PangoContext for the given @font_map.
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*
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* Returns: (transfer full): the newly created context: free with g_object_unref().
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*/
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PangoContext *
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cogl_pango_font_map_create_context (CoglPangoFontMap *font_map);
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/**
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* cogl_pango_font_map_set_resolution:
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* @font_map: a #CoglPangoFontMap
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* @dpi: The resolution in "dots per inch". (Physical inches aren't
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* actually involved; the terminology is conventional.)
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*
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* Sets the resolution for the @font_map. This is a scale factor
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* between points specified in a #PangoFontDescription and Cogl units.
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* The default value is %96, meaning that a 10 point font will be 13
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* units high. (10 * 96. / 72. = 13.3).
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*
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* Since: 1.14
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*/
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void
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cogl_pango_font_map_set_resolution (CoglPangoFontMap *font_map,
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double dpi);
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/**
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* cogl_pango_font_map_clear_glyph_cache:
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* @font_map: a #CoglPangoFontMap
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*
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* Clears the glyph cache for @font_map.
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*
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* Since: 1.0
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*/
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void
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cogl_pango_font_map_clear_glyph_cache (CoglPangoFontMap *font_map);
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/**
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* cogl_pango_ensure_glyph_cache_for_layout:
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* @layout: A #PangoLayout
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*
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* This updates any internal glyph cache textures as necessary to be
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* able to render the given @layout.
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*
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* This api should be used to avoid mid-scene modifications of
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* glyph-cache textures which can lead to undefined rendering results.
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*
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* Since: 1.0
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*/
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void
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cogl_pango_ensure_glyph_cache_for_layout (PangoLayout *layout);
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/**
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* cogl_pango_font_map_set_use_mipmapping:
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* @font_map: a #CoglPangoFontMap
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* @value: %TRUE to enable the use of mipmapping
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*
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* Sets whether the renderer for the passed font map should use
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* mipmapping when rendering a #PangoLayout.
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*
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* Since: 1.0
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*/
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void
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cogl_pango_font_map_set_use_mipmapping (CoglPangoFontMap *font_map,
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CoglBool value);
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/**
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* cogl_pango_font_map_get_use_mipmapping:
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* @font_map: a #CoglPangoFontMap
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*
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* Retrieves whether the #CoglPangoRenderer used by @font_map will use
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* mipmapping when rendering the glyphs.
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*
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* Return value: %TRUE if mipmapping is used, %FALSE otherwise.
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*
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* Since: 1.0
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*/
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CoglBool
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cogl_pango_font_map_get_use_mipmapping (CoglPangoFontMap *font_map);
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/**
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* cogl_pango_font_map_get_renderer:
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* @font_map: a #CoglPangoFontMap
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*
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* Retrieves the #CoglPangoRenderer for the passed @font_map.
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*
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* Return value: (transfer none): a #PangoRenderer
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*
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* Since: 1.0
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*/
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PangoRenderer *
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cogl_pango_font_map_get_renderer (CoglPangoFontMap *font_map);
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/**
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* cogl_pango_show_layout:
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* @framebuffer: A #CoglFramebuffer to draw too.
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* @layout: a #PangoLayout
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* @x: X coordinate to render the layout at
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* @y: Y coordinate to render the layout at
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* @color: color to use when rendering the layout
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*
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* Draws a solidly coloured @layout on the given @framebuffer at (@x,
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* @y) within the @framebuffer<!-- -->'s current model-view coordinate
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* space.
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*
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* Since: 1.14
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*/
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void
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cogl_pango_show_layout (CoglFramebuffer *framebuffer,
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PangoLayout *layout,
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float x,
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float y,
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const CoglColor *color);
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/**
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* cogl_pango_show_layout_line:
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* @framebuffer: A #CoglFramebuffer to draw too.
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* @line: a #PangoLayoutLine
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* @x: X coordinate to render the line at
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* @y: Y coordinate to render the line at
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* @color: color to use when rendering the line
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*
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* Draws a solidly coloured @line on the given @framebuffer at (@x,
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* @y) within the @framebuffer<!-- -->'s current model-view coordinate
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* space.
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*
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* Since: 1.14
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*/
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void
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cogl_pango_show_layout_line (CoglFramebuffer *framebuffer,
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PangoLayoutLine *line,
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float x,
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float y,
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const CoglColor *color);
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#define COGL_PANGO_TYPE_RENDERER (cogl_pango_renderer_get_type ())
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#define COGL_PANGO_RENDERER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), COGL_PANGO_TYPE_RENDERER, CoglPangoRenderer))
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#define COGL_PANGO_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), COGL_PANGO_TYPE_RENDERER, CoglPangoRendererClass))
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#define COGL_PANGO_IS_RENDERER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), COGL_PANGO_TYPE_RENDERER))
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#define COGL_PANGO_IS_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), COGL_PANGO_TYPE_RENDERER))
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#define COGL_PANGO_RENDERER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), COGL_PANGO_TYPE_RENDERER, CoglPangoRendererClass))
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/* opaque types */
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typedef struct _CoglPangoRenderer CoglPangoRenderer;
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typedef struct _CoglPangoRendererClass CoglPangoRendererClass;
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GType cogl_pango_renderer_get_type (void) G_GNUC_CONST;
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/**
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* cogl_pango_render_layout_subpixel:
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* @layout: a #PangoLayout
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* @x: X coordinate (in Pango units) to render the layout at
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* @y: Y coordinate (in Pango units) to render the layout at
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* @color: color to use when rendering the layout
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* @flags:
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*
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* Draws a solidly coloured @layout on the given @framebuffer at (@x,
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* @y) within the @framebuffer<!-- -->'s current model-view coordinate
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* space.
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*
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* Since: 1.0
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* Deprecated: 1.16: Use cogl_pango_show_layout() instead
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*/
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COGL_DEPRECATED_IN_1_16_FOR (cogl_pango_show_layout)
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void
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cogl_pango_render_layout_subpixel (PangoLayout *layout,
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int x,
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int y,
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const CoglColor *color,
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int flags);
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/**
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* cogl_pango_render_layout:
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* @layout: a #PangoLayout
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* @x: X coordinate to render the layout at
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* @y: Y coordinate to render the layout at
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* @color: color to use when rendering the layout
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* @flags:
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*
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* Draws a solidly coloured @layout on the given @framebuffer at (@x,
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* @y) within the @framebuffer<!-- -->'s current model-view coordinate
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* space.
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*
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* Since: 1.0
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* Deprecated: 1.16: Use cogl_pango_show_layout() instead
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*/
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COGL_DEPRECATED_IN_1_16_FOR (cogl_pango_show_layout)
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void
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cogl_pango_render_layout (PangoLayout *layout,
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int x,
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int y,
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const CoglColor *color,
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int flags);
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/**
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* cogl_pango_render_layout_line:
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* @line: a #PangoLayoutLine
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* @x: X coordinate to render the line at
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* @y: Y coordinate to render the line at
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* @color: color to use when rendering the line
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*
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* Renders @line at the given coordinates using the given color.
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*
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* Since: 1.0
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* Deprecated: 1.16: Use cogl_pango_show_layout() instead
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*/
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COGL_DEPRECATED_IN_1_16_FOR (cogl_pango_show_layout_line)
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void
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cogl_pango_render_layout_line (PangoLayoutLine *line,
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int x,
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int y,
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const CoglColor *color);
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COGL_END_DECLS
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#endif /* __COGL_PANGO_H__ */
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