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Win32 Fonts

Win32 Fonts — Font support for Microsoft Windows

Types and Values

Description

The Microsoft Windows font backend is primarily used to render text on Microsoft Windows systems.

Functions

cairo_win32_font_face_create_for_logfontw ()

cairo_font_face_t *
cairo_win32_font_face_create_for_logfontw
                               (LOGFONTW *logfont);

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

Parameters

logfont

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

 

Returns

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

Since: 1.0


cairo_win32_font_face_create_for_hfont ()

cairo_font_face_t *
cairo_win32_font_face_create_for_hfont
                               (HFONT font);

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

Parameters

font

An HFONT structure specifying the font to use.

 

Returns

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

Since: 1.2


cairo_win32_font_face_create_for_logfontw_hfont ()

cairo_font_face_t *
cairo_win32_font_face_create_for_logfontw_hfont
                               (LOGFONTW *logfont,
                                HFONT font);

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

Parameters

logfont

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

 

font

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

 

Returns

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

Since: 1.6


cairo_win32_scaled_font_select_font ()

cairo_status_t
cairo_win32_scaled_font_select_font (cairo_scaled_font_t *scaled_font,
                                     HDC hdc);

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

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

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

Parameters

scaled_font

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

 

hdc

a device context

 

Returns

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

Since: 1.0


cairo_win32_scaled_font_done_font ()

void
cairo_win32_scaled_font_done_font (cairo_scaled_font_t *scaled_font);

Releases any resources allocated by cairo_win32_scaled_font_select_font()

Parameters

scaled_font

A scaled font from the Win32 font backend.

 

Since: 1.0


cairo_win32_scaled_font_get_metrics_factor ()

double
cairo_win32_scaled_font_get_metrics_factor
                               (cairo_scaled_font_t *scaled_font);

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

Parameters

scaled_font

a scaled font from the Win32 font backend

 

Returns

factor to multiply logical units by to get font space coordinates.

Since: 1.0


cairo_win32_scaled_font_get_logical_to_device ()

void
cairo_win32_scaled_font_get_logical_to_device
                               (cairo_scaled_font_t *scaled_font,
                                cairo_matrix_t *logical_to_device);

Gets the transformation mapping the logical space used by scaled_font to device space.

Parameters

scaled_font

a scaled font from the Win32 font backend

 

logical_to_device

matrix to return

 

Since: 1.4


cairo_win32_scaled_font_get_device_to_logical ()

void
cairo_win32_scaled_font_get_device_to_logical
                               (cairo_scaled_font_t *scaled_font,
                                cairo_matrix_t *device_to_logical);

Gets the transformation mapping device space to the logical space used by scaled_font .

Parameters

scaled_font

a scaled font from the Win32 font backend

 

device_to_logical

matrix to return

 

Since: 1.4

Types and Values

CAIRO_HAS_WIN32_FONT

#define CAIRO_HAS_WIN32_FONT 1

Defined if the Microsoft Windows font backend is available. This macro can be used to conditionally compile backend-specific code.

Since: 1.8

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