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/* 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"
#ifndef SHADEBLENDCAPS
#define SHADEBLENDCAPS 120
#endif
#ifndef SB_NONE
#define SB_NONE 0
#endif
#define WIN32_FONT_LOGICAL_SCALE 32
/* 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 3rd 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 BOOL (WINAPI *cairo_win32_alpha_blend_func_t) (HDC hdcDest,
int nXOriginDest,
int nYOriginDest,
int nWidthDest,
int hHeightDest,
HDC hdcSrc,
int nXOriginSrc,
int nYOriginSrc,
int nWidthSrc,
int nHeightSrc,
BLENDFUNCTION blendFunction);
typedef struct _cairo_win32_device {
cairo_device_t base;
HMODULE msimg32_dll;
const cairo_compositor_t *compositor;
cairo_win32_alpha_blend_func_t alpha_blend;
} 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_gdi_error (const char *context);
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);
#endif /* CAIRO_WIN32_PRIVATE_H */
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