Quelle cairo-win32-private.h
Sprache: C
/* cairo - a vector graphics library with display and print output
*
* Copyright © 2005 Red Hat , Inc
*
* This library is free software ; you can redistribute it and / or
* modify it either under the terms of the GNU Lesser General Public
* License version 2 . 1 as published by the Free Software Foundation
* ( the " LGPL " ) or , at your option , under the terms of the Mozilla
* Public License Version 1 . 1 ( the " MPL " ) . If you do not alter this
* notice , a recipient may use your version of this file under either
* the MPL or the LGPL .
*
* You should have received a copy of the LGPL along with this library
* in the file COPYING - LGPL - 2 . 1 ; if not , write to the Free Software
* Foundation , Inc . , 51 Franklin Street , Suite 500 , Boston , MA 02110 - 1335 , USA
* You should have received a copy of the MPL along with this library
* in the file COPYING - MPL - 1 . 1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1 . 1 ( the " License " ) ; you may not use this file except in
* compliance with the License . You may obtain a copy of the License at
* http : //www.mozilla.org/MPL/
*
* This software is distributed on an " AS IS " basis , WITHOUT WARRANTY
* OF ANY KIND , either express or implied . See the LGPL or the MPL for
* the specific language governing rights and limitations .
*
* The Original Code is the cairo graphics library .
*
* The Initial Developer of the Original Code is Red Hat , Inc .
*
* Contributor ( s ) :
* Owen Taylor < otaylor @ redhat . com >
*/
#ifndef CAIRO_WIN32_PRIVATE_H
#define CAIRO_WIN32_PRIVATE_H
#include "cairo-win32.h"
#include "cairoint.h"
#include "cairo-device-private.h"
#include "cairo-surface-clipper-private.h"
#include "cairo-surface-private.h"
#define WIN32_FONT_LOGICAL_SCALE 32
CAIRO_BEGIN_DECLS
/* Surface DC flag values */
enum {
/* If this is a surface created for printing or not */
CAIRO_WIN32_SURFACE_FOR_PRINTING = (1 <<0 ),
/* Whether the DC is a display DC or not */
CAIRO_WIN32_SURFACE_IS_DISPLAY = (1 <<1 ),
/* Whether we can use BitBlt with this surface */
CAIRO_WIN32_SURFACE_CAN_BITBLT = (1 <<2 ),
/* Whether we can use AlphaBlend with this surface */
CAIRO_WIN32_SURFACE_CAN_ALPHABLEND = (1 <<3 ),
/* Whether we can use StretchBlt with this surface */
CAIRO_WIN32_SURFACE_CAN_STRETCHBLT = (1 <<4 ),
/* Whether we can use StretchDIBits with this surface */
CAIRO_WIN32_SURFACE_CAN_STRETCHDIB = (1 <<5 ),
/* Whether we can use GradientFill rectangles with this surface */
CAIRO_WIN32_SURFACE_CAN_RECT_GRADIENT = (1 <<6 ),
/* Whether we can use the CHECKJPEGFORMAT escape function */
CAIRO_WIN32_SURFACE_CAN_CHECK_JPEG = (1 <<7 ),
/* Whether we can use the CHECKPNGFORMAT escape function */
CAIRO_WIN32_SURFACE_CAN_CHECK_PNG = (1 <<8 ),
/* Whether we can use gdi drawing with solid rgb brush with this surface */
CAIRO_WIN32_SURFACE_CAN_RGB_BRUSH = (1 <<9 ),
};
typedef struct _cairo_win32_surface {
cairo_surface_t base;
cairo_format_t format;
HDC dc;
/* Surface DC flags */
unsigned flags;
/* We use the x and y parts of extents for situations where
* we ' re not supposed to draw to the entire surface .
* For example , during a paint event a program will get
* a DC that has been clipped to the dirty region .
* A cairo surface constructed for that DC will have extents
* that match bounds of the clipped region .
*/
cairo_rectangle_int_t extents;
/* Offset added to extents, used when the extents start with a negative
* offset , which can occur on Windows for , and only for , desktop DC . This
* occurs when you have multiple monitors , and at least one monitor
* extends to the left , or above , the primaty monitor . The primary
* monitor on Windows always starts with offset ( 0 , 0 ) , and any other points
* to the left , or above , have negative offsets . So the ' desktop DC ' is
* in fact a ' virtual desktop ' which can start with extents in the negative
* range .
*
* Why use new variables , and not the device transform ? Simply because since
* the device transform functions are exposed , a lot of 3 rd party libraries
* simply overwrite those , disregarding the prior content , instead of actually
* adding the offset . GTK for example simply resets the device transform of the
* desktop cairo surface to zero . So make some private member variables for
* this , which will not be fiddled with externally .
*/
int x_ofs, y_ofs;
} cairo_win32_surface_t;
#define to_win32_surface(S) ((cairo_win32_surface_t *)(S))
typedef struct _cairo_win32_display_surface {
cairo_win32_surface_t win32;
/* We create off-screen surfaces as DIBs or DDBs, based on what we created
* originally */
HBITMAP bitmap;
cairo_bool_t is_dib;
/* Used to save the initial 1x1 monochrome bitmap for the DC to
* select back into the DC before deleting the DC and our
* bitmap . For Windows XP , this doesn ' t seem to be necessary
* . . . we can just delete the DC and that automatically unselects
* our bitmap . But it ' s standard practice so apparently is needed
* on some versions of Windows .
*/
HBITMAP saved_dc_bitmap;
cairo_surface_t *image;
cairo_surface_t *fallback;
HRGN initial_clip_rgn;
cairo_bool_t had_simple_clip;
} cairo_win32_display_surface_t;
#define to_win32_display_surface(S) ((cairo_win32_display_surface_t *)(S))
typedef struct _cairo_win32_printing_surface {
cairo_win32_surface_t win32;
cairo_surface_clipper_t clipper;
cairo_paginated_mode_t paginated_mode;
cairo_content_t content;
cairo_bool_t path_empty;
cairo_bool_t has_ctm;
cairo_matrix_t ctm;
cairo_bool_t has_gdi_ctm;
cairo_matrix_t gdi_ctm;
cairo_bool_t extents_valid;
HBRUSH brush, old_brush;
cairo_scaled_font_subsets_t *font_subsets;
} cairo_win32_printing_surface_t;
#define to_win32_printing_surface(S) ((cairo_win32_printing_surface_t *)(S))
typedef struct _cairo_win32_device {
cairo_device_t base;
const cairo_compositor_t *compositor;
} cairo_win32_device_t;
#define to_win32_device(D) ((cairo_win32_device_t *)(D))
#define to_win32_device_from_surface(S) to_win32_device(((cairo_surface_t *)(S))->device)
cairo_private cairo_device_t *
_cairo_win32_device_get (void );
const cairo_compositor_t *
_cairo_win32_gdi_compositor_get (void );
cairo_status_t
_cairo_win32_print_api_error (const char *context, const char *api);
cairo_bool_t
_cairo_surface_is_win32 (const cairo_surface_t *surface);
cairo_bool_t
_cairo_surface_is_win32_printing (const cairo_surface_t *surface);
cairo_private void
_cairo_win32_display_surface_discard_fallback (cairo_win32_display_surface_t *surface);
cairo_bool_t
_cairo_win32_surface_get_extents (void *abstract_surface,
cairo_rectangle_int_t *rectangle);
uint32_t
_cairo_win32_flags_for_dc (HDC dc, cairo_format_t format);
cairo_int_status_t
_cairo_win32_surface_emit_glyphs (cairo_win32_surface_t *dst,
const cairo_pattern_t *source,
cairo_glyph_t *glyphs,
int num_glyphs,
cairo_scaled_font_t *scaled_font,
cairo_bool_t glyph_indexing);
static inline void
_cairo_matrix_to_win32_xform (const cairo_matrix_t *m,
XFORM *xform)
{
xform->eM11 = (FLOAT ) m->xx;
xform->eM21 = (FLOAT ) m->xy;
xform->eM12 = (FLOAT ) m->yx;
xform->eM22 = (FLOAT ) m->yy;
xform->eDx = (FLOAT ) m->x0;
xform->eDy = (FLOAT ) m->y0;
}
cairo_status_t
_cairo_win32_display_surface_set_clip (cairo_win32_display_surface_t *surface,
cairo_clip_t *clip);
void
_cairo_win32_display_surface_unset_clip (cairo_win32_display_surface_t *surface);
void
_cairo_win32_debug_dump_hrgn (HRGN rgn, char *header);
cairo_bool_t
_cairo_win32_scaled_font_is_type1 (cairo_scaled_font_t *scaled_font);
cairo_bool_t
_cairo_win32_scaled_font_is_bitmap (cairo_scaled_font_t *scaled_font);
cairo_public BYTE
cairo_win32_get_system_text_quality (void );
HMODULE
_cairo_win32_load_library_from_system32 (const wchar_t *name);
#if CAIRO_HAS_DWRITE_FONT
cairo_int_status_t
_cairo_dwrite_show_glyphs_on_surface (void *surface,
cairo_operator_t op,
const cairo_pattern_t *source,
cairo_glyph_t *glyphs,
int num_glyphs,
cairo_scaled_font_t *scaled_font,
cairo_clip_t *clip);
cairo_int_status_t
_cairo_dwrite_scaled_font_create_win32_scaled_font (cairo_scaled_font_t *scaled_font,
cairo_scaled_font_t **new_font);
#endif /* CAIRO_HAS_DWRITE_FONT */
CAIRO_END_DECLS
#endif /* CAIRO_WIN32_PRIVATE_H */
Messung V0.5 in Prozent C=98 H=96 G=96
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-08-26)
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*© Formatika GbR, Deutschland
2026-08-25
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