jpayne@68: jpayne@68: jpayne@68: jpayne@68: jpayne@68: Win32 Fonts: Cairo: A Vector Graphics Library jpayne@68: jpayne@68: jpayne@68: jpayne@68: jpayne@68: jpayne@68: jpayne@68: jpayne@68: jpayne@68: jpayne@68: jpayne@68: jpayne@68: jpayne@68: jpayne@68: jpayne@68: jpayne@68: jpayne@68:
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Win32 Fonts

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Win32 Fonts — Font support for Microsoft Windows

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Functions

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jpayne@68: cairo_font_face_t * jpayne@68: jpayne@68: cairo_win32_font_face_create_for_logfontw () jpayne@68:
jpayne@68: cairo_font_face_t * jpayne@68: jpayne@68: cairo_win32_font_face_create_for_hfont () jpayne@68:
jpayne@68: cairo_font_face_t * jpayne@68: jpayne@68: cairo_win32_font_face_create_for_logfontw_hfont () jpayne@68:
jpayne@68: cairo_status_t jpayne@68: jpayne@68: cairo_win32_scaled_font_select_font () jpayne@68:
jpayne@68: void jpayne@68: jpayne@68: cairo_win32_scaled_font_done_font () jpayne@68:
jpayne@68: double jpayne@68: jpayne@68: cairo_win32_scaled_font_get_metrics_factor () jpayne@68:
jpayne@68: void jpayne@68: jpayne@68: cairo_win32_scaled_font_get_logical_to_device () jpayne@68:
jpayne@68: void jpayne@68: jpayne@68: cairo_win32_scaled_font_get_device_to_logical () jpayne@68:
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Types and Values

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#defineCAIRO_HAS_WIN32_FONT
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Description

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The Microsoft Windows font backend is primarily used to render text on jpayne@68: Microsoft Windows systems.

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Functions

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cairo_win32_font_face_create_for_logfontw ()

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cairo_font_face_t *
jpayne@68: cairo_win32_font_face_create_for_logfontw
jpayne@68:                                (LOGFONTW *logfont);
jpayne@68:

Creates a new font for the Win32 font backend based on a jpayne@68: LOGFONT. This font can then be used with jpayne@68: cairo_set_font_face() or cairo_scaled_font_create(). jpayne@68: The cairo_scaled_font_t jpayne@68: returned from cairo_scaled_font_create() is also for the Win32 backend jpayne@68: and can be used with functions such as cairo_win32_scaled_font_select_font().

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Parameters

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logfont

A LOGFONTW structure specifying the font to use. jpayne@68: The lfHeight, lfWidth, lfOrientation and lfEscapement jpayne@68: fields of this structure are ignored.

 
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Returns

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a newly created cairo_font_face_t. Free with jpayne@68: cairo_font_face_destroy() when you are done using it.

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Since: 1.0

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cairo_win32_font_face_create_for_hfont ()

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cairo_font_face_t *
jpayne@68: cairo_win32_font_face_create_for_hfont
jpayne@68:                                (HFONT font);
jpayne@68:

Creates a new font for the Win32 font backend based on a jpayne@68: HFONT. This font can then be used with jpayne@68: cairo_set_font_face() or cairo_scaled_font_create(). jpayne@68: The cairo_scaled_font_t jpayne@68: returned from cairo_scaled_font_create() is also for the Win32 backend jpayne@68: and can be used with functions such as cairo_win32_scaled_font_select_font().

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Parameters

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font

An HFONT structure specifying the font to use.

 
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Returns

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a newly created cairo_font_face_t. Free with jpayne@68: cairo_font_face_destroy() when you are done using it.

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Since: 1.2

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cairo_win32_font_face_create_for_logfontw_hfont ()

jpayne@68: 
cairo_font_face_t *
jpayne@68: cairo_win32_font_face_create_for_logfontw_hfont
jpayne@68:                                (LOGFONTW *logfont,
jpayne@68:                                 HFONT font);
jpayne@68:

Creates a new font for the Win32 font backend based on a jpayne@68: LOGFONT. This font can then be used with jpayne@68: cairo_set_font_face() or cairo_scaled_font_create(). jpayne@68: The cairo_scaled_font_t jpayne@68: returned from cairo_scaled_font_create() is also for the Win32 backend jpayne@68: and can be used with functions such as cairo_win32_scaled_font_select_font().

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Parameters

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logfont

A LOGFONTW structure specifying the font to use. jpayne@68: If font jpayne@68: is NULL then the lfHeight, lfWidth, lfOrientation and lfEscapement jpayne@68: fields of this structure are ignored. Otherwise lfWidth, lfOrientation and jpayne@68: lfEscapement must be zero.

 

font

An HFONT that can be used when the font matrix is a scale by jpayne@68: -lfHeight and the CTM is identity.

 
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Returns

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a newly created cairo_font_face_t. Free with jpayne@68: cairo_font_face_destroy() when you are done using it.

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Since: 1.6

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cairo_win32_scaled_font_select_font ()

jpayne@68: 
cairo_status_t
jpayne@68: cairo_win32_scaled_font_select_font (cairo_scaled_font_t *scaled_font,
jpayne@68:                                      HDC hdc);
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Selects the font into the given device context and changes the jpayne@68: map mode and world transformation of the device context to match jpayne@68: that of the font. This function is intended for use when using jpayne@68: layout APIs such as Uniscribe to do text layout with the jpayne@68: cairo font. After finishing using the device context, you must call jpayne@68: cairo_win32_scaled_font_done_font() to release any resources allocated jpayne@68: by this function.

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See cairo_win32_scaled_font_get_metrics_factor() for converting logical jpayne@68: coordinates from the device context to font space.

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Normally, calls to SaveDC() and RestoreDC() would be made around jpayne@68: the use of this function to preserve the original graphics state.

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Parameters

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scaled_font

A cairo_scaled_font_t from the Win32 font backend. Such an jpayne@68: object can be created with cairo_win32_font_face_create_for_logfontw().

 

hdc

a device context

 
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Returns

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CAIRO_STATUS_SUCCESS if the operation succeeded. jpayne@68: otherwise an error such as CAIRO_STATUS_NO_MEMORY and jpayne@68: the device context is unchanged.

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Since: 1.0

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cairo_win32_scaled_font_done_font ()

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void
jpayne@68: cairo_win32_scaled_font_done_font (cairo_scaled_font_t *scaled_font);
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Releases any resources allocated by cairo_win32_scaled_font_select_font()

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Parameters

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scaled_font

A scaled font from the Win32 font backend.

 
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Since: 1.0

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cairo_win32_scaled_font_get_metrics_factor ()

jpayne@68: 
double
jpayne@68: cairo_win32_scaled_font_get_metrics_factor
jpayne@68:                                (cairo_scaled_font_t *scaled_font);
jpayne@68:

Gets a scale factor between logical coordinates in the coordinate jpayne@68: space used by cairo_win32_scaled_font_select_font() (that is, the jpayne@68: coordinate system used by the Windows functions to return metrics) and jpayne@68: font space coordinates.

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Parameters

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scaled_font

a scaled font from the Win32 font backend

 
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Returns

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factor to multiply logical units by to get font space jpayne@68: coordinates.

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Since: 1.0

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cairo_win32_scaled_font_get_logical_to_device ()

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void
jpayne@68: cairo_win32_scaled_font_get_logical_to_device
jpayne@68:                                (cairo_scaled_font_t *scaled_font,
jpayne@68:                                 cairo_matrix_t *logical_to_device);
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Gets the transformation mapping the logical space used by scaled_font jpayne@68: jpayne@68: to device space.

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Parameters

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scaled_font

a scaled font from the Win32 font backend

 

logical_to_device

matrix to return

 
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Since: 1.4

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cairo_win32_scaled_font_get_device_to_logical ()

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void
jpayne@68: cairo_win32_scaled_font_get_device_to_logical
jpayne@68:                                (cairo_scaled_font_t *scaled_font,
jpayne@68:                                 cairo_matrix_t *device_to_logical);
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Gets the transformation mapping device space to the logical space jpayne@68: used by scaled_font jpayne@68: .

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Parameters

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scaled_font

a scaled font from the Win32 font backend

 

device_to_logical

matrix to return

 
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Since: 1.4

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Types and Values

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CAIRO_HAS_WIN32_FONT

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#define CAIRO_HAS_WIN32_FONT 1
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Defined if the Microsoft Windows font backend is available. jpayne@68: This macro can be used to conditionally compile backend-specific code.

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Since: 1.8

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See Also

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cairo_font_face_t

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