mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-17 14:30:15 +00:00
c4b5d5da11
* gdk/tmpl/x_interaction.sgml: * gdk/tmpl/gdkscreen.sgml: * gdk/tmpl/gdkdisplaymanager.sgml: * gdk/tmpl/gdkdisplay.sgml: * gtk/tmpl/gtkstock.sgml: * gtk/tmpl/gtkwidget.sgml: * gtk/tmpl/gtkmain.sgml: * gtk/tmpl/gtkcolorsel.sgml: * gtk/tmpl/gtkaccelgroup.sgml: * gdk-pixbuf/tmpl/module_interface.sgml: Add "Since" information. * gdk/gdkcolor.c: * gdk/gdkfont.c: Add some Deprecation info.
357 lines
9.2 KiB
C
357 lines
9.2 KiB
C
/* GDK - The GIMP Drawing Kit
|
|
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/*
|
|
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
|
|
* file for a list of people on the GTK+ Team. See the ChangeLog
|
|
* files for a list of changes. These files are distributed with
|
|
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
|
|
*/
|
|
|
|
#undef GDK_DISABLE_DEPRECATED
|
|
|
|
#include "gdkdisplay.h"
|
|
#include "gdkfont.h"
|
|
#include "gdkinternals.h"
|
|
|
|
GType
|
|
gdk_font_get_type (void)
|
|
{
|
|
static GType our_type = 0;
|
|
|
|
if (our_type == 0)
|
|
our_type = g_boxed_type_register_static ("GdkFont",
|
|
(GBoxedCopyFunc)gdk_font_ref,
|
|
(GBoxedFreeFunc)gdk_font_unref);
|
|
return our_type;
|
|
}
|
|
|
|
/**
|
|
* gdk_font_ref:
|
|
* @font: a #GdkFont
|
|
*
|
|
* Increases the reference count of a font by one.
|
|
*
|
|
* Return value: @font
|
|
**/
|
|
GdkFont*
|
|
gdk_font_ref (GdkFont *font)
|
|
{
|
|
GdkFontPrivate *private;
|
|
|
|
g_return_val_if_fail (font != NULL, NULL);
|
|
|
|
private = (GdkFontPrivate*) font;
|
|
private->ref_count += 1;
|
|
return font;
|
|
}
|
|
|
|
/**
|
|
* gdk_font_unref:
|
|
* @font: a #GdkFont
|
|
*
|
|
* Decreases the reference count of a font by one.
|
|
* If the result is zero, destroys the font.
|
|
**/
|
|
void
|
|
gdk_font_unref (GdkFont *font)
|
|
{
|
|
GdkFontPrivate *private;
|
|
private = (GdkFontPrivate*) font;
|
|
|
|
g_return_if_fail (font != NULL);
|
|
g_return_if_fail (private->ref_count > 0);
|
|
|
|
private->ref_count -= 1;
|
|
if (private->ref_count == 0)
|
|
_gdk_font_destroy (font);
|
|
}
|
|
|
|
/**
|
|
* gdk_string_width:
|
|
* @font: a #GdkFont
|
|
* @string: the nul-terminated string to measure
|
|
*
|
|
* Determines the width of a nul-terminated string.
|
|
* (The distance from the origin of the string to the
|
|
* point where the next string in a sequence of strings
|
|
* should be drawn)
|
|
*
|
|
* Return value: the width of the string in pixels.
|
|
**/
|
|
gint
|
|
gdk_string_width (GdkFont *font,
|
|
const gchar *string)
|
|
{
|
|
g_return_val_if_fail (font != NULL, -1);
|
|
g_return_val_if_fail (string != NULL, -1);
|
|
|
|
return gdk_text_width (font, string, _gdk_font_strlen (font, string));
|
|
}
|
|
|
|
/**
|
|
* gdk_char_width:
|
|
* @font: a #GdkFont
|
|
* @character: the character to measure.
|
|
*
|
|
* Determines the width of a given character.
|
|
*
|
|
* Return value: the width of the character in pixels.
|
|
*
|
|
* Deprecated: Use gdk_text_extents() instead.
|
|
**/
|
|
gint
|
|
gdk_char_width (GdkFont *font,
|
|
gchar character)
|
|
{
|
|
g_return_val_if_fail (font != NULL, -1);
|
|
|
|
return gdk_text_width (font, &character, 1);
|
|
}
|
|
|
|
/**
|
|
* gdk_char_width_wc:
|
|
* @font: a #GdkFont
|
|
* @character: the character to measure.
|
|
*
|
|
* Determines the width of a given wide character. (Encoded
|
|
* in the wide-character encoding of the current locale).
|
|
*
|
|
* Return value: the width of the character in pixels.
|
|
**/
|
|
gint
|
|
gdk_char_width_wc (GdkFont *font,
|
|
GdkWChar character)
|
|
{
|
|
g_return_val_if_fail (font != NULL, -1);
|
|
|
|
return gdk_text_width_wc (font, &character, 1);
|
|
}
|
|
|
|
/**
|
|
* gdk_string_measure:
|
|
* @font: a #GdkFont
|
|
* @string: the nul-terminated string to measure.
|
|
*
|
|
* Determines the distance from the origin to the rightmost
|
|
* portion of a nul-terminated string when drawn. This is not the
|
|
* correct value for determining the origin of the next
|
|
* portion when drawing text in multiple pieces.
|
|
* See gdk_string_width().
|
|
*
|
|
* Return value: the right bearing of the string in pixels.
|
|
**/
|
|
gint
|
|
gdk_string_measure (GdkFont *font,
|
|
const gchar *string)
|
|
{
|
|
g_return_val_if_fail (font != NULL, -1);
|
|
g_return_val_if_fail (string != NULL, -1);
|
|
|
|
return gdk_text_measure (font, string, _gdk_font_strlen (font, string));
|
|
}
|
|
|
|
/**
|
|
* gdk_string_extents:
|
|
* @font: a #GdkFont.
|
|
* @string: the nul-terminated string to measure.
|
|
* @lbearing: the left bearing of the string.
|
|
* @rbearing: the right bearing of the string.
|
|
* @width: the width of the string.
|
|
* @ascent: the ascent of the string.
|
|
* @descent: the descent of the string.
|
|
*
|
|
* Gets the metrics of a nul-terminated string.
|
|
**/
|
|
void
|
|
gdk_string_extents (GdkFont *font,
|
|
const gchar *string,
|
|
gint *lbearing,
|
|
gint *rbearing,
|
|
gint *width,
|
|
gint *ascent,
|
|
gint *descent)
|
|
{
|
|
g_return_if_fail (font != NULL);
|
|
g_return_if_fail (string != NULL);
|
|
|
|
gdk_text_extents (font, string, _gdk_font_strlen (font, string),
|
|
lbearing, rbearing, width, ascent, descent);
|
|
}
|
|
|
|
|
|
/**
|
|
* gdk_text_measure:
|
|
* @font: a #GdkFont
|
|
* @text: the text to measure.
|
|
* @text_length: the length of the text in bytes.
|
|
*
|
|
* Determines the distance from the origin to the rightmost
|
|
* portion of a string when drawn. This is not the
|
|
* correct value for determining the origin of the next
|
|
* portion when drawing text in multiple pieces.
|
|
* See gdk_text_width().
|
|
*
|
|
* Return value: the right bearing of the string in pixels.
|
|
**/
|
|
gint
|
|
gdk_text_measure (GdkFont *font,
|
|
const gchar *text,
|
|
gint text_length)
|
|
{
|
|
gint rbearing;
|
|
|
|
g_return_val_if_fail (font != NULL, -1);
|
|
g_return_val_if_fail (text != NULL, -1);
|
|
|
|
gdk_text_extents (font, text, text_length, NULL, &rbearing, NULL, NULL, NULL);
|
|
return rbearing;
|
|
}
|
|
|
|
/**
|
|
* gdk_char_measure:
|
|
* @font: a #GdkFont
|
|
* @character: the character to measure.
|
|
*
|
|
* Determines the distance from the origin to the rightmost
|
|
* portion of a character when drawn. This is not the
|
|
* correct value for determining the origin of the next
|
|
* portion when drawing text in multiple pieces.
|
|
*
|
|
* Return value: the right bearing of the character in pixels.
|
|
**/
|
|
gint
|
|
gdk_char_measure (GdkFont *font,
|
|
gchar character)
|
|
{
|
|
g_return_val_if_fail (font != NULL, -1);
|
|
|
|
return gdk_text_measure (font, &character, 1);
|
|
}
|
|
|
|
/**
|
|
* gdk_string_height:
|
|
* @font: a #GdkFont
|
|
* @string: the nul-terminated string to measure.
|
|
*
|
|
* Determines the total height of a given nul-terminated
|
|
* string. This value is not generally useful, because you
|
|
* cannot determine how this total height will be drawn in
|
|
* relation to the baseline. See gdk_string_extents().
|
|
*
|
|
* Return value: the height of the string in pixels.
|
|
**/
|
|
gint
|
|
gdk_string_height (GdkFont *font,
|
|
const gchar *string)
|
|
{
|
|
g_return_val_if_fail (font != NULL, -1);
|
|
g_return_val_if_fail (string != NULL, -1);
|
|
|
|
return gdk_text_height (font, string, _gdk_font_strlen (font, string));
|
|
}
|
|
|
|
/**
|
|
* gdk_text_height:
|
|
* @font: a #GdkFont
|
|
* @text: the text to measure.
|
|
* @text_length: the length of the text in bytes.
|
|
*
|
|
* Determines the total height of a given string.
|
|
* This value is not generally useful, because you cannot
|
|
* determine how this total height will be drawn in
|
|
* relation to the baseline. See gdk_text_extents().
|
|
*
|
|
* Return value: the height of the string in pixels.
|
|
**/
|
|
gint
|
|
gdk_text_height (GdkFont *font,
|
|
const gchar *text,
|
|
gint text_length)
|
|
{
|
|
gint ascent, descent;
|
|
|
|
g_return_val_if_fail (font != NULL, -1);
|
|
g_return_val_if_fail (text != NULL, -1);
|
|
|
|
gdk_text_extents (font, text, text_length, NULL, NULL, NULL, &ascent, &descent);
|
|
return ascent + descent;
|
|
}
|
|
|
|
/**
|
|
* gdk_char_height:
|
|
* @font: a #GdkFont
|
|
* @character: the character to measure.
|
|
*
|
|
* Determines the total height of a given character.
|
|
* This value is not generally useful, because you cannot
|
|
* determine how this total height will be drawn in
|
|
* relation to the baseline. See gdk_text_extents().
|
|
*
|
|
* Return value: the height of the character in pixels.
|
|
*
|
|
* Deprecated: Use gdk_text_extents() instead.
|
|
**/
|
|
gint
|
|
gdk_char_height (GdkFont *font,
|
|
gchar character)
|
|
{
|
|
g_return_val_if_fail (font != NULL, -1);
|
|
|
|
return gdk_text_height (font, &character, 1);
|
|
}
|
|
|
|
/**
|
|
* gdk_font_from_description:
|
|
* @font_desc: a #PangoFontDescription.
|
|
*
|
|
* Load a #GdkFont based on a Pango font description. This font will
|
|
* only be an approximation of the Pango font, and
|
|
* internationalization will not be handled correctly. This function
|
|
* should only be used for legacy code that cannot be easily converted
|
|
* to use Pango. Using Pango directly will produce better results.
|
|
*
|
|
* Return value: the newly loaded font, or %NULL if the font
|
|
* cannot be loaded.
|
|
**/
|
|
GdkFont*
|
|
gdk_font_from_description (PangoFontDescription *font_desc)
|
|
{
|
|
return gdk_font_from_description_for_display (gdk_display_get_default (),font_desc);
|
|
}
|
|
|
|
/**
|
|
* gdk_font_load:
|
|
* @font_name: a XLFD describing the font to load.
|
|
*
|
|
* Loads a font.
|
|
*
|
|
* The font may be newly loaded or looked up the font in a cache.
|
|
* You should make no assumptions about the initial reference count.
|
|
*
|
|
* Return value: a #GdkFont, or %NULL if the font could not be loaded.
|
|
**/
|
|
GdkFont*
|
|
gdk_font_load (const gchar *font_name)
|
|
{
|
|
return gdk_font_load_for_display (gdk_display_get_default(), font_name);
|
|
}
|
|
|
|
|