David Robillard
35fc31a1de
Update libraries to latest stable released version (except gnomecanvasmm, which is strangely packaged...). Fixes building (at least here). git-svn-id: svn://localhost/ardour2/trunk@2790 d708f5d6-7413-0410-9779-e7cbd77b26cf
245 lines
9.3 KiB
C++
245 lines
9.3 KiB
C++
// -*- c++ -*-
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// Generated by gtkmmproc -- DO NOT MODIFY!
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#ifndef _PANGOMM_LAYOUTLINE_H
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#define _PANGOMM_LAYOUTLINE_H
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#include <glibmm.h>
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/* $Id$ */
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/* layoutline.h
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*
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* Copyright (C) 1998-1999 The gtkmm Development Team
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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 Library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <glibmm/slisthandle.h> // For the Glib::SListHandle typedef
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#include <pangomm/rectangle.h>
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#include <cairomm/context.h>
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#include <pango/pango-layout.h>
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namespace Pango
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{
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class Layout;
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/** A Pango::LayoutLine represents one of the lines resulting from laying out a paragraph via Pango::Layout.
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* Pango::LayoutLine objects are obtained by calling Pango::Layout::get_line()
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* and are only valid until the text, attributes, or settings of the parent Pango::Layout are modified.
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* Routines for rendering Pango::Layout objects are provided in code specific to each rendering system.
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*/
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class LayoutLine
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{
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public:
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#ifndef DOXYGEN_SHOULD_SKIP_THIS
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typedef LayoutLine CppObjectType;
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typedef PangoLayoutLine BaseObjectType;
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#endif /* DOXYGEN_SHOULD_SKIP_THIS */
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// For use with Glib::RefPtr<> only.
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void reference() const;
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void unreference() const;
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///Provides access to the underlying C instance.
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PangoLayoutLine* gobj();
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///Provides access to the underlying C instance.
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const PangoLayoutLine* gobj() const;
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///Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
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PangoLayoutLine* gobj_copy() const;
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protected:
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// Do not derive this. Pango::LayoutLine can neither be constructed nor deleted.
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LayoutLine();
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void operator delete(void*, size_t);
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private:
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// noncopyable
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LayoutLine(const LayoutLine&);
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LayoutLine& operator=(const LayoutLine&);
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public:
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/** Converts from x offset to the byte index of the corresponding
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* character within the text of the layout. If @a x_pos is outside the line,
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* @a index and @a trailing will point to the very first or very last position
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* in the line. This determination is based on the resolved direction
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* of the paragraph; for example, if the resolved direction is
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* right-to-left, then an X position to the right of the line (after it)
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* results in 0 being stored in @a index and @a trailing . An X position to the
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* left of the line results in @a index pointing to the (logical) last
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* grapheme in the line and @a trailing being set to the number of characters
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* in that grapheme. The reverse is true for a left-to-right line.
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* @param x_pos The X offset (in Pango::GlyphUnit)
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* from the left edge of the line.
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* @param index Location to store calculated byte index for
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* the grapheme in which the user clicked.
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* @param trailing Location to store a integer indicating where
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* in the grapheme the user clicked. It will either
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* be zero, or the number of characters in the
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* grapheme. 0 represents the trailing edge of the grapheme.
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* @return <tt>false</tt> if @a x_pos was outside the line, <tt>true</tt> if inside.
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*/
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bool x_to_index(int x_pos, int& index, int& trailing) const;
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/** Converts an index within a line to a @a x position.
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* @param index Byte offset of a grapheme within the layout.
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* @param trailing A boolean indicating the edge of the grapheme to retrieve the position of. If <tt>false</tt>, the trailing edge of the grapheme, if <tt>true</tt> the leading of the grapheme.
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* @return The x offset (in thousands of a device unit).
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*/
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int index_to_x(int index, bool trailing) const;
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/** Get a list of visual ranges corresponding to a given logical range.
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* This list is not necessarily minimal - there may be consecutive ranges which are adjacent.
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* The ranges will be sorted from left to right. The ranges are with respect to the
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* left edge of the entire layout, not with respect to the line.
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* @param start_index The start byte index of the logical range.
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* If the value of @a start_index is less than the start index for the line,
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* then the first range will extend all the way to the leading edge of the layout.
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* Otherwise it will start at the leading edge of the first character.
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* @param end_index The end byte index of the logical range.
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* If the value of @a end_index is greater than the end index for the line,
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* then the last range will extend all the way to the trailing edge of the layout.
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* Otherwise, it will end at the trailing edge of the last character.
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* @return An array of ranges represented by pairs of integers marking the start and end pixel coordinates of the ranges.
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*/
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Glib::ArrayHandle<std::pair<int,int> > get_x_ranges(int start_index, int end_index) const;
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/** Compute the logical and ink extents of a layout line. See the documentation
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* for Pango::Font::get_glyph_extents() for details about the interpretation
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* of the rectangles.
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* @param ink_rect Rectangle used to store the extents of the glyph string as drawn.
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* @param logical_rect Rectangle used to store the logical extents of the glyph string.
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*/
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void get_extents(Rectangle& ink_rect, Rectangle& logical_rect) const;
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/** Compute the ink extents of a layout line.
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* @return The extents of the layout line as drawn.
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*/
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Rectangle get_ink_extents() const;
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/** Compute the logical extents of a layout line.
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* @return The logical extents of the layout line.
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*/
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Rectangle get_logical_extents() const;
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/** Compute the logical and ink extents of a layout line. See the documentation
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* for Pango::Font::get_glyph_extents() for details about the interpretation
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* of the rectangles. The returned rectangles are in device units, as
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* opposed to pango_layout_line_get_extents(), which returns the extents in
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* units of device unit / PANGO_SCALE.
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* @param ink_rect Rectangle used to store the extents of the glyph string as drawn.
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* @param logical_rect Rectangle used to store the logical extents of the glyph string.
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*/
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void get_pixel_extents(Rectangle& ink_rect, Rectangle& logical_rect) const;
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/** Compute the ink extents of a layout line in device units.
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* @return The extents of the layout line as drawn.
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*/
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Rectangle get_pixel_ink_extents() const;
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/** Compute the logical extents of a layout line in device units.
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* @return The logical extents of the layout line.
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*/
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Rectangle get_pixel_logical_extents() const;
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/** Draws this LayoutLine in the specified Cairo context.
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* The origin of the glyphs (the left edge of the line) will
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* be drawn at the current point of the cairo context.
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*
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* @param context A Cairo context.
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*/
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void show_in_cairo_context(const Cairo::RefPtr<Cairo::Context>& context);
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/** Adds the text in this LayoutLine to the current path in the
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* specified Cairo @a context. The origin of the glyphs (the left edge
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* of the line) will be at the current point of the cairo context.
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*
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* @param context A Cairo context.
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*/
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void add_to_cairo_context(const Cairo::RefPtr<Cairo::Context>& context);
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Glib::RefPtr<Pango::Layout> get_layout();
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Glib::RefPtr<const Pango::Layout> get_layout() const;
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//_MEMBER_SET_GOBJECT(layout, layout, Pango::Layout, PangoLayout*)
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int get_length() const;
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int get_start_index() const;
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};
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} // namespace Pango
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#ifndef DOXYGEN_SHOULD_SKIP_THIS
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namespace Glib
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{
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// forward declaration needed by LayoutLineTraits
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Glib::RefPtr<Pango::LayoutLine> wrap(PangoLayoutLine* object, bool take_copy /* = false */);
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} // namespace Glib
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#endif /* DOXYGEN_SHOULD_SKIP_THIS */
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namespace Pango
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{
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struct LayoutLineTraits
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{
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typedef Glib::RefPtr<LayoutLine> CppType;
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typedef PangoLayoutLine * CType;
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typedef PangoLayoutLine * CTypeNonConst;
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static CType to_c_type (const CppType& ptr) { return Glib::unwrap(ptr); }
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static CType to_c_type (CType ptr) { return ptr; }
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static CppType to_cpp_type (CType ptr) { return Glib::wrap(ptr, true); }
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static void release_c_type (CType ptr) { pango_layout_line_unref(ptr); }
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};
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typedef Glib::SListHandle< Glib::RefPtr<LayoutLine>, LayoutLineTraits > SListHandle_LayoutLine;
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typedef Glib::SListHandle< Glib::RefPtr<const LayoutLine>, LayoutLineTraits > SListHandle_ConstLayoutLine;
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} // namespace Pango
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namespace Glib
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{
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/** A Glib::wrap() method for this object.
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*
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* @param object The C instance.
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* @param take_copy False if the result should take ownership of the C instance. True if it should take a new copy or ref.
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* @result A C++ instance that wraps this C instance.
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*
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* @relates Pango::LayoutLine
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*/
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Glib::RefPtr<Pango::LayoutLine> wrap(PangoLayoutLine* object, bool take_copy = false);
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} // namespace Glib
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#endif /* _PANGOMM_LAYOUTLINE_H */
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