236 lines
8.1 KiB
C++
236 lines
8.1 KiB
C++
// -*- c++ -*-
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// Generated by gtkmmproc -- DO NOT MODIFY!
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#ifndef _PANGOMM_LAYOUTITER_H
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#define _PANGOMM_LAYOUTITER_H
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#include <glibmm.h>
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/* $Id$ */
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/* layoutiter.h
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*
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* Copyright 2001-2002 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 <pangomm/layoutline.h>
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#include <pangomm/layoutrun.h>
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#include <pango/pango-layout.h>
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namespace Pango
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{
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/** A Pango::LayoutIter can be used to iterate over the visual extents of a Pango::Layout.
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*/
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class LayoutIter
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{
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public:
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#ifndef DOXYGEN_SHOULD_SKIP_THIS
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typedef LayoutIter CppObjectType;
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typedef PangoLayoutIter BaseObjectType;
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#endif /* DOXYGEN_SHOULD_SKIP_THIS */
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private:
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public:
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// There's no other ctor, and the default ctor creates an invalid object.
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// Therefore, Pango::LayoutIter is usable only as output argument.
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LayoutIter();
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~LayoutIter();
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/** Gets the current byte index. Note that iterating forward by char
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* moves in visual order, not logical order, so indexes may not be
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* sequential. Also, the index may be equal to the length of the text
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* in the layout, if on the <tt>0</tt> run (see pango_layout_iter_get_run()).
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* @return Current byte index.
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*/
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int get_index() const;
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/** Gets the current run. When iterating by run, at the end of each
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* line, there's a position with a <tt>0</tt> run, so this function can return
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* <tt>0</tt>. The <tt>0</tt> run at the end of each line ensures that all lines have
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* at least one run, even lines consisting of only a newline.
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* @return The current run.
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*/
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LayoutRun get_run() const;
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/** Gets the current line.
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* @return The current line.
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*/
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Glib::RefPtr<LayoutLine> get_line() const;
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/** Determines whether @a iter is on the last line of the layout.
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* @return <tt>true</tt> if @a iter is on the last line.
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*/
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bool at_last_line() const;
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/** Moves @a iter forward to the next character in visual order. If @a iter was already at
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* the end of the layout, returns <tt>false</tt>.
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* @return Whether motion was possible.
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*/
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bool next_char();
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/** Moves @a iter forward to the next cluster in visual order. If @a iter
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* was already at the end of the layout, returns <tt>false</tt>.
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* @return Whether motion was possible.
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*/
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bool next_cluster();
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/** Moves @a iter forward to the next run in visual order. If @a iter was
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* already at the end of the layout, returns <tt>false</tt>.
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* @return Whether motion was possible.
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*/
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bool next_run();
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/** Moves @a iter forward to the start of the next line. If @a iter is
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* already on the last line, returns <tt>false</tt>.
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* @return Whether motion was possible.
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*/
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bool next_line();
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/** Gets the extents of the current character, in layout coordinates (origin is the top left of the entire layout).
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* Only logical extents can sensibly be obtained for characters; ink extents make sense only down to the level of clusters.
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* @return The logical extents of the current character.
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*/
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Rectangle get_char_extents() const;
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/** Gets the extents of the current cluster, in layout coordinates
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* (origin is the top left of the entire layout).
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* @param ink_rect Rectangle to fill with ink extents.
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* @param logical_rect Rectangle to fill with logical extents.
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*/
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void get_cluster_extents(Rectangle& ink_rect, Rectangle& logical_rect) const;
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/** Gets the ink extents of the current cluster, in layout coordinates (origin is the top left of the entire layout).
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* @return The extents of the current cluster as drawn.
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*/
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Rectangle get_cluster_ink_extents() const;
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/** Gets the logical extents of the current cluster, in layout coordinates (origin is the top left of the entire layout).
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* @return The logical extents of the current cluster.
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*/
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Rectangle get_cluster_logical_extents() const;
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/** Gets the extents of the current run in layout coordinates
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* (origin is the top left of the entire layout).
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* @param ink_rect Rectangle to fill with ink extents.
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* @param logical_rect Rectangle to fill with logical extents.
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*/
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void get_run_extents(Rectangle& ink_rect, Rectangle& logical_rect) const;
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/** Gets the ink extents of the current run in layout coordinates (origin is the top left of the entire layout).
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* @return The extents of the current run as drawn.
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*/
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Rectangle get_run_ink_extents() const;
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/** Gets the logical extents of the current run in layout coordinates (origin is the top left of the entire layout).
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* @return The logical extents of the current run.
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*/
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Rectangle get_run_logical_extents() const;
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/** Obtains the extents of the current line. @a ink_rect or @a logical_rect
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* can be <tt>0</tt> if you aren't interested in them. Extents are in layout
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* coordinates (origin is the top-left corner of the entire
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* Pango::Layout). Thus the extents returned by this function will be
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* the same width/height but not at the same x/y as the extents
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* returned from pango_layout_line_get_extents().
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* @param ink_rect Rectangle to fill with ink extents.
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* @param logical_rect Rectangle to fill with logical extents.
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*/
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void get_line_extents(Rectangle& ink_rect, Rectangle& logical_rect) const;
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/** Obtains the ink extents of the current line.
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* @return The extents of the current line as drawn.
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*/
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Rectangle get_line_ink_extents() const;
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/** Obtains the logical extents of the current line.
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* @return The logical extents of the current line.
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*/
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Rectangle get_line_logical_extents() const;
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/** Divides the vertical space in the Pango::Layout being iterated over
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* between the lines in the layout, and returns the space belonging to
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* the current line. A line's range includes the line's logical
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* extents, plus half of the spacing above and below the line, if
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* pango_layout_set_spacing() has been called to set layout spacing.
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* The y positions are in layout coordinates (origin at top left of the
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* entire layout).
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* @param y0 Start of line.
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* @param y1 End of line.
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*/
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void get_line_yrange(int& y0, int& y1) const;
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/** Obtains the extents of the Pango::Layout being iterated
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* over. @a ink_rect or @a logical_rect can be <tt>0</tt> if you
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* aren't interested in them.
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* @param ink_rect Rectangle to fill with ink extents.
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* @param logical_rect Rectangle to fill with logical extents.
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*/
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void get_layout_extents(Rectangle& ink_rect, Rectangle& logical_rect) const;
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/** Obtains the ink extents of the Pango::Layout being iterated over.
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* @return The extents of the layout as drawn.
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*/
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Rectangle get_layout_ink_extents() const;
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/** Obtains the logical extents of the Pango::Layout being iterated over.
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* @return The logical extents of the layout.
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*/
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Rectangle get_layout_logical_extents() const;
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/** Gets the y position of the current line's baseline, in layout
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* coordinates (origin at top left of the entire layout).
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* @return Baseline of current line.
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*/
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int get_baseline() const;
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/// Provides access to the underlying C GObject.
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PangoLayoutIter* gobj() { return gobject_; }
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/// Provides access to the underlying C GObject.
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const PangoLayoutIter* gobj() const { return gobject_; }
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#ifndef DOXYGEN_SHOULD_SKIP_THIS
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void assign_gobj(PangoLayoutIter* src);
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#endif
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protected:
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PangoLayoutIter* gobject_;
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private:
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// noncopyable
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LayoutIter(const LayoutIter&);
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LayoutIter& operator=(const LayoutIter&);
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};
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} //namespace Pango
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#endif /* _PANGOMM_LAYOUTITER_H */
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