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- // -*- c++ -*-
- // Generated by gtkmmproc -- DO NOT MODIFY!
- #ifndef _PANGOMM_LAYOUT_H
- #define _PANGOMM_LAYOUT_H
-
- #include <glibmm.h>
-
- /* $Id: layout.hg,v 1.7 2004/09/11 09:16:10 murrayc Exp $ */
-
- /* layout.h
- *
- * Copyright(C) 1998-1999 The gtkmm Development Team
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or(at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-
- #include <glibmm/object.h>
- #include <glibmm/slisthandle.h>
- #include <pangomm/font.h>
- #include <pangomm/fontdescription.h>
- #include <pangomm/context.h>
- #include <pangomm/attrlist.h>
- #include <pangomm/tabarray.h>
- #include <pangomm/layoutline.h>
- #include <pangomm/layoutiter.h>
- #include <pango/pango-layout.h>
-
-
- #ifndef DOXYGEN_SHOULD_SKIP_THIS
- typedef struct _PangoLayout PangoLayout;
- typedef struct _PangoLayoutClass PangoLayoutClass;
- #endif /* DOXYGEN_SHOULD_SKIP_THIS */
-
-
- namespace Pango
- { class Layout_Class; } // namespace Pango
- namespace Pango
- {
-
-
- /** @addtogroup pangommEnums Enums and Flags */
-
- /**
- * @ingroup pangommEnums
- */
- enum Alignment
- {
- ALIGN_LEFT,
- ALIGN_CENTER,
- ALIGN_RIGHT
- };
-
- } // namespace Pango
-
-
- #ifndef DOXYGEN_SHOULD_SKIP_THIS
- namespace Glib
- {
-
- template <>
- class Value<Pango::Alignment> : public Glib::Value_Enum<Pango::Alignment>
- {
- public:
- static GType value_type() G_GNUC_CONST;
- };
-
- } // namespace Glib
- #endif /* DOXYGEN_SHOULD_SKIP_THIS */
-
-
- namespace Pango
- {
-
- /**
- * @ingroup pangommEnums
- */
- enum WrapMode
- {
- WRAP_WORD,
- WRAP_CHAR,
- WRAP_WORD_CHAR
- };
-
- } // namespace Pango
-
-
- #ifndef DOXYGEN_SHOULD_SKIP_THIS
- namespace Glib
- {
-
- template <>
- class Value<Pango::WrapMode> : public Glib::Value_Enum<Pango::WrapMode>
- {
- public:
- static GType value_type() G_GNUC_CONST;
- };
-
- } // namespace Glib
- #endif /* DOXYGEN_SHOULD_SKIP_THIS */
-
-
- namespace Pango
- {
-
- /**
- * @ingroup pangommEnums
- */
- enum EllipsizeMode
- {
- ELLIPSIZE_NONE,
- ELLIPSIZE_START,
- ELLIPSIZE_MIDDLE,
- ELLIPSIZE_END
- };
-
- } // namespace Pango
-
-
- #ifndef DOXYGEN_SHOULD_SKIP_THIS
- namespace Glib
- {
-
- template <>
- class Value<Pango::EllipsizeMode> : public Glib::Value_Enum<Pango::EllipsizeMode>
- {
- public:
- static GType value_type() G_GNUC_CONST;
- };
-
- } // namespace Glib
- #endif /* DOXYGEN_SHOULD_SKIP_THIS */
-
-
- namespace Pango
- {
-
-
- /** A Pango::Layout represents an entire paragraph of text.
- * It is initialized with a Pango::Context, UTF-8 string and set of attributes for that string.
- * Once that is done, the set of formatted lines can be extracted from the object,
- * the layout can be rendered, and conversion between logical character positions
- * within the layout's text, and the physical position of the resulting glyphs can be made.
- */
-
- class Layout : public Glib::Object
- {
-
- #ifndef DOXYGEN_SHOULD_SKIP_THIS
-
- public:
- typedef Layout CppObjectType;
- typedef Layout_Class CppClassType;
- typedef PangoLayout BaseObjectType;
- typedef PangoLayoutClass BaseClassType;
-
- private: friend class Layout_Class;
- static CppClassType layout_class_;
-
- private:
- // noncopyable
- Layout(const Layout&);
- Layout& operator=(const Layout&);
-
- protected:
- explicit Layout(const Glib::ConstructParams& construct_params);
- explicit Layout(PangoLayout* castitem);
-
- #endif /* DOXYGEN_SHOULD_SKIP_THIS */
-
- public:
- virtual ~Layout();
-
- #ifndef DOXYGEN_SHOULD_SKIP_THIS
- static GType get_type() G_GNUC_CONST;
- static GType get_base_type() G_GNUC_CONST;
- #endif
-
- ///Provides access to the underlying C GObject.
- PangoLayout* gobj() { return reinterpret_cast<PangoLayout*>(gobject_); }
-
- ///Provides access to the underlying C GObject.
- const PangoLayout* gobj() const { return reinterpret_cast<PangoLayout*>(gobject_); }
-
- ///Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
- PangoLayout* gobj_copy();
-
- private:
-
-
- protected:
- explicit Layout(const Glib::RefPtr<Context>& context);
-
- public:
-
- static Glib::RefPtr<Layout> create(const Glib::RefPtr<Context>& context);
-
-
- /** Does a deep copy-by-value of the @a src layout. The attribute list,
- * tab array, and text from the original layout are all copied by
- * value.
- * @return A new Pango::Layout identical to @a src .
- */
- Glib::RefPtr<Layout> copy();
-
- /** Retrieves the Pango::Context used for this layout.
- * @return The Pango::Context for the layout. This does not
- * have an additional refcount added, so if you want to keep
- * a copy of this around, you must reference it yourself.
- */
- Glib::RefPtr<Context> get_context() const;
-
- /** Sets the text attributes for a layout object.
- * @param attrs A Pango::AttrList.
- */
- void set_attributes(AttrList& attrs);
-
- /** Gets the attribute list for the layout, if any.
- * @return A Pango::AttrList.
- */
- AttrList get_attributes() const;
-
- /** Set the text of the layout.
- * @param text The text for the layout.
- */
- void set_text(const Glib::ustring& text);
-
-
- /** Gets the text in the layout. The returned text should not
- * be freed or modified.
- * @return The text in the @a layout .
- */
- Glib::ustring get_text() const;
-
- /** Sets the layout text and attribute list from marked-up text (see markup format).
- * Replaces the current text and attribute list.
- * @param markup Some marked-up text.
- */
- void set_markup(const Glib::ustring& markup);
-
- /** Sets the layout text and attribute list from marked-up text (see markup format).
- * Replaces the current text and attribute list.
- *
- * If @a accel_marker is nonzero, the given character will mark the character following
- * it as an accelerator. For example, the accel marker might be an ampersand or
- * underscore. All characters marked as an accelerator will receive a
- * Pango::UNDERLINE_LOW attribute, and the first character so marked will be returned
- * in @a accel_char. Two @a accel_marker characters following each other produce a
- * single literal @a accel_marker character.
- * @param markup Some marked-up text.
- * @param accel_marker Marker for accelerators in the text.
- * @param accel_char Return location for any located accelerators.
- */
- void set_markup(const Glib::ustring& markup, gunichar accel_marker, gunichar& accel_char);
-
-
- /** Set the default font description for the layout. If no font
- * description is set on the layout, the font description from
- * the layout's context is used.
- * @param desc The new pango font description.
- */
- void set_font_description(const FontDescription& desc);
- void unset_font_description();
-
-
- /** Sets the width to which the lines of the Pango::Layout should be wrapped.
- * @param width The desired width, or -1 to indicate that no wrapping should be
- * performed.
- */
- void set_width(int width);
-
- /** Gets the width to which the lines of the Pango::Layout should be wrapped.
- * @return The width.
- */
- int get_width() const;
-
- /** Sets the wrap mode; the wrap mode only has an effect if a width
- * is set on the layout with pango_layout_set_width(). To turn off wrapping,
- * set the width to -1.
- * @param wrap The wrap mode.
- */
- void set_wrap(WrapMode wrap);
-
- /** Gets the wrap mode for the layout.
- * @return Active wrap mode.
- */
- WrapMode get_wrap() const;
-
- /** Sets the width in pango units to indent each paragraph. A negative value
- * of @a indent will produce a hanging indent. That is, the first line will
- * have the full width, and subsequent lines will be indented by the
- * absolute value of @a indent .
- * @param indent The amount by which to indentset.
- */
- void set_indent(int indent);
-
- /** Gets the paragraph indent width in pango units. A negative value
- * indicates a hanging indent.
- * @return The indent.
- */
- int get_indent() const;
-
- /** Sets the amount of spacing between the lines of the layout.
- * @param spacing The amount of spacing.
- */
- void set_spacing(int spacing);
-
- /** Gets the amount of spacing between the lines of the layout.
- * @return The spacing (in Pango::GlyphUnit).
- */
- int get_spacing() const;
-
- /** Sets whether or not each complete line should be stretched to
- * fill the entire width of the layout. This stretching is typically
- * done by adding whitespace, but for some scripts (such as Arabic),
- * the justification is done by extending the characters.
- *
- * Note that as of Pango-1.4, this functionality is not yet implemented.
- * @param justify Whether the lines in the layout should be justified.
- */
- void set_justify(bool justify = true);
-
- /** Gets whether or not each complete line should be stretched to
- * fill the entire width of the layout.
- * @return The justify.
- */
- bool get_justify() const;
-
-
- /** Gets whether to calculate the bidirectional base direction
- * for the layout according to the contents of the layout.
- * See pango_layout_set_auto_dir().
- * @return If <tt>true</tt>, the bidirectional base direction
- * is computed from the layout's contents.
- */
- bool get_auto_dir() const;
-
- /** Sets whether to calculate the bidirectional base direction
- * for the layout according to the contents of the layout;
- * when this flag is on (the default), then paragraphs in
- * @a layout that begin with strong right-to-left characters
- * (Arabic and Hebrew principally), will have right-to-left
- * layout, paragraphs with letters from other scripts will
- * have left-to-right layout. Paragraphs with only neutral
- * characters get their direction from the surrounding paragraphs.
- *
- * When <tt>false</tt>, the choice between left-to-right and
- * right-to-left layout is done by according to the base direction
- * of the layout's Pango::Context. (See pango_context_set_base_dir()).
- *
- * When the auto-computed direction or a paragraph differs from the
- * base direction of the context, then the interpretation of
- * Pango::ALIGN_LEFT and Pango::ALIGN_RIGHT are swapped.
- * @param auto_dir If <tt>true</tt>, compute the bidirectional base direction
- * from the layout's contents.
- */
- void set_auto_dir(bool auto_dir = true);
-
-
- /** Sets the alignment for the layout (how partial lines are
- * positioned within the horizontal space available.)
- * @param alignment The new alignment.
- */
- void set_alignment(Alignment alignment);
-
- /** Sets the alignment for the layout (how partial lines are
- * positioned within the horizontal space available.)
- * @return The alignment value.
- */
- Alignment get_alignment() const;
-
-
- /** Sets the tabs to use for @a layout , overriding the default tabs
- * (by default, tabs are every 8 spaces). If @a tabs is <tt>0</tt>, the default
- * tabs are reinstated. @a tabs is copied into the layout; you must
- * free your copy of @a tabs yourself.
- * @param tabs A Pango::TabArray.
- */
- void set_tabs(TabArray& tabs);
-
- /** Get the current Pango::TabArray used by this layout. If no
- * Pango::TabArray has been set, then the default tabs are in use
- * and an invalid instance is returned. Default tabs are every 8 spaces.
- * @return A copy of the tabs for this layout.
- */
- TabArray get_tabs() const;
-
-
- /** If @a setting is <tt>true</tt>, do not treat newlines and similar characters
- * as paragraph separators; instead, keep all text in a single paragraph,
- * and display a glyph for paragraph separator characters. Used when
- * you want to allow editing of newlines on a single text line.
- * @param setting New setting.
- */
- void set_single_paragraph_mode(bool setting = true);
-
- /** Obtains the value set by pango_layout_set_single_paragraph_mode().
- * @return <tt>true</tt> if the layout does not break paragraphs at
- * paragraph separator characters.
- */
- bool get_single_paragraph_mode() const;
-
-
- /** Sets the type of ellipsization being performed for @a layout .
- * Depending on the ellipsization mode @a ellipsize text is
- * removed from the start, middle, or end of lines so they
- * fit within the width of layout set with pango_layout_set_width().
- *
- * If the layout contains characters such as newlines that
- * force it to be layed out in multiple lines, then each line
- * is ellipsized separately.
- *
- * Since: 1.6
- * @param ellipsize The new ellipsization mode for @a layout .
- */
- void set_ellipsize(EllipsizeMode ellipsize);
-
- /** Gets the type of ellipsization being performed for @a layout .
- * See pango_layout_set_ellipsize()
- * @return The current ellipsization mode for @a layout
- *
- * Since: 1.6.
- */
- EllipsizeMode get_ellipsize() const;
-
-
- /** Forces recomputation of any state in the Pango::Layout that
- * might depend on the layout's context. This function should
- * be called if you make changes to the context subsequent
- * to creating the layout.
- */
- void context_changed();
-
- /** Retrieve an array of logical attributes for each character in the layout.
- * @return An array of logical attributes.
- */
- Glib::ArrayHandle<LogAttr> get_log_attrs() const;
-
- /** Convert from an index within the layout to the onscreen position corresponding to the grapheme at that index, which is represented as rectangle.
- * Note that @a x in the returned rectangle is always the leading edge of the grapheme
- * and @a x + @a width the trailing edge of the grapheme.
- * If the directionality of the grapheme is right-to-left, then @a width will be negative.
- * @param index Byte index within layout.
- * @return The position of the grapheme.
- */
- Rectangle index_to_pos(int index) const;
-
-
- /** Given an index within a layout, determines the positions that of the
- * strong and weak cursors if the insertion point is at that
- * index. The position of each cursor is stored as a zero-width
- * rectangle. The strong cursor location is the location where
- * characters of the directionality equal to the base direction of the
- * layout are inserted. The weak cursor location is the location
- * where characters of the directionality opposite to the base
- * direction of the layout are inserted.
- * @param index The byte index of the cursor.
- * @param strong_pos Location to store the strong cursor position (may be <tt>0</tt>).
- * @param weak_pos Location to store the weak cursor position (may be <tt>0</tt>).
- */
- void get_cursor_pos(int index, Rectangle& strong_pos, Rectangle& weak_pos) const;
-
- /** Given an index within the layout, determine the positions that of the strong cursors if the insertion point is at that index.
- * @param index The byte index of the cursor.
- * @return The strong cursor position.
- */
- Rectangle get_cursor_strong_pos(int index) const;
-
- /** Given an index within the layout, determine the positions that of the weak cursors if the insertion point is at that index.
- * @param index The byte index of the cursor.
- * @return The weak cursor position.
- */
- Rectangle get_cursor_weak_pos(int index) const;
-
-
- /** Computes a new cursor position from an old position and
- * a count of positions to move visually. If @a count is positive,
- * then the new strong cursor position will be one position
- * to the right of the old cursor position. If @a count is position
- * then the new strong cursor position will be one position
- * to the left of the old cursor position.
- *
- * In the presence of bidirection text, the correspondence
- * between logical and visual order will depend on the direction
- * of the current run, and there may be jumps when the cursor
- * is moved off of the end of a run.
- *
- * Motion here is in cursor positions, not in characters, so a
- * single call to pango_layout_move_cursor_visually() may move the
- * cursor over multiple characters when multiple characters combine
- * to form a single grapheme.
- * @param strong Whether the moving cursor is the strong cursor or the
- * weak cursor. The strong cursor is the cursor corresponding
- * to text insertion in the base direction for the layout.
- * @param old_index The byte index of the grapheme for the old index.
- * @param old_trailing If 0, the cursor was at the trailing edge of the
- * grapheme indicated by @a old_index , if > 0, the cursor
- * was at the leading edge.
- * @param direction Direction to move cursor. A negative
- * value indicates motion to the left.
- * @param new_index Location to store the new cursor byte index. A value of -1
- * indicates that the cursor has been moved off the beginning
- * of the layout. A value of G_MAXINT indicates that
- * the cursor has been moved off the end of the layout.
- * @param new_trailing Number of characters to move forward from the location returned
- * for @a new_index to get the position where the cursor should
- * be displayed. This allows distinguishing the position at
- * the beginning of one line from the position at the end
- * of the preceding line. @a new_index is always on the line
- * where the cursor should be displayed.
- */
- void move_cursor_visually(bool strong,
- int old_index, int old_trailing, int direction,
- int& new_index, int& new_trailing) const;
-
-
- /** Converts from X and Y position within a layout to the byte
- * index to the character at that logical position. If the
- * Y position is not inside the layout, the closest position is chosen
- * (the position will be clamped inside the layout). If the
- * X position is not within the layout, then the start or the
- * end of the line is chosen as described for pango_layout_x_to_index().
- * If either the X or Y positions were not inside the layout, then the
- * function returns <tt>false</tt>; on an exact hit, it returns <tt>true</tt>.
- * @param x The X offset (in Pango::GlyphUnit)
- * from the left edge of the layout.
- * @param y The Y offset (in Pango::GlyphUnit)
- * from the top edge of the layout.
- * @param index Location to store calculated byte index.
- * @param trailing Location to store a integer indicating where
- * in the grapheme the user clicked. It will either
- * be zero, or the number of characters in the
- * grapheme. 0 represents the trailing edge of the grapheme.
- * @return <tt>true</tt> if the coordinates were inside text.
- */
- bool xy_to_index(int x, int y, int& index, int& trailing) const;
-
-
- /** Compute the logical and ink extents of @a layout . Logical extents
- * are usually what you want for positioning things. The extents
- * are given in layout coordinates; layout coordinates begin at the
- * top left corner of the layout.
- * @param ink_rect Rectangle used to store the extents of the layout as drawn.
- * @param logical_rect Rectangle used to store the logical extents of the layout.
- */
- void get_extents(Rectangle& ink_rect, Rectangle& logical_rect) const;
-
- /** Compute the ink extents of layout.
- * @return The extents of the layout as drawn.
- */
- Rectangle get_ink_extents() const;
-
- /** Compute the logical extents of layout.
- * @return The logical extents of the layout.
- */
- Rectangle get_logical_extents() const;
-
-
- /** Compute the logical and ink extents of @a layout in device units.
- * See pango_layout_get_extents(); this function just calls
- * pango_layout_get_extents() and then converts the extents to
- * pixels using the Pango::SCALE factor.
- * @param ink_rect Rectangle used to store the extents of the layout as drawn.
- * @param logical_rect Rectangle used to store the logical extents of the
- * layout.
- */
- void get_pixel_extents(Rectangle& ink_rect, Rectangle& logical_rect) const;
-
- /** Compute the ink extents of the layout in device units.
- * @return The extents of the layout as drawn.
- */
- Rectangle get_pixel_ink_extents() const;
-
- /** Compute the logical extents of the layout in device units.
- * @return The logical extents of the layout.
- */
- Rectangle get_pixel_logical_extents() const;
-
-
- /** Determines the logical width and height of a Pango::Layout
- * in Pango units. (device units divided by Pango::SCALE). This
- * is simply a convenience function around pango_layout_get_extents().
- * @param width Location to store the logical width, or <tt>0</tt>.
- * @param height Location to store the logical height, or <tt>0</tt>.
- */
- void get_size(int& width, int& height) const;
-
- /** Determines the logical width and height of a Pango::Layout
- * in device units. (pango_layout_get_size() returns the width
- * and height in thousandths of a device unit.) This
- * is simply a convenience function around pango_layout_get_extents().
- * @param width Location to store the logical width, or <tt>0</tt>.
- * @param height Location to store the logical height, or <tt>0</tt>.
- */
- void get_pixel_size(int& width, int& height) const;
-
-
- /** Retrieves the count of lines for the @a layout .
- * @return The line count.
- */
- int get_line_count() const;
-
-
- /** Retrieves a particular line from a Pango::Layout.
- * @param line The index of a line, which must be between 0 and
- * <tt>pango_layout_get_line_count(layout) - 1</tt>, inclusive.
- * @return The requested Pango::LayoutLine, or <tt>0</tt> if the
- * index is out of range. This layout line can
- * be ref'ed and retained, but will become invalid
- * if changes are made to the Pango::Layout.
- */
- Glib::RefPtr<LayoutLine> get_line(int line);
-
- /** Retrieves a particular line from a Pango::Layout.
- * @param line The index of a line, which must be between 0 and
- * <tt>pango_layout_get_line_count(layout) - 1</tt>, inclusive.
- * @return The requested Pango::LayoutLine, or <tt>0</tt> if the
- * index is out of range. This layout line can
- * be ref'ed and retained, but will become invalid
- * if changes are made to the Pango::Layout.
- */
- Glib::RefPtr<const LayoutLine> get_line(int line) const;
-
-
- /** Returns the lines of the @a layout as a list.
- * @return A G::SList containing the lines in the layout. This
- * points to internal data of the Pango::Layout and must be used with
- * care. It will become invalid on any change to the layout's
- * text or properties.
- */
- SListHandle_LayoutLine get_lines();
-
- /** Returns the lines of the @a layout as a list.
- * @return A G::SList containing the lines in the layout. This
- * points to internal data of the Pango::Layout and must be used with
- * care. It will become invalid on any change to the layout's
- * text or properties.
- */
- SListHandle_ConstLayoutLine get_lines() const;
-
- /** Gets an iterator to iterate over the visual extents of the layout.
- * @param iter Location to store the iterator.
- */
- void get_iter(LayoutIter& iter);
-
-
- public:
-
- public:
- //C++ methods used to invoke GTK+ virtual functions:
-
- protected:
- //GTK+ Virtual Functions (override these to change behaviour):
-
- //Default Signal Handlers::
-
-
- };
-
- } /* namespace Pango */
-
-
- namespace Glib
- {
- /** @relates Pango::Layout
- * @param object The C instance
- * @param take_copy False if the result should take ownership of the C instance. True if it should take a new copy or ref.
- * @result A C++ instance that wraps this C instance.
- */
- Glib::RefPtr<Pango::Layout> wrap(PangoLayout* object, bool take_copy = false);
- }
-
-
- #endif /* _PANGOMM_LAYOUT_H */
-
-