diff options
Diffstat (limited to 'src/win32/cairo-win32-gdi-compositor.c')
| -rwxr-xr-x | src/win32/cairo-win32-gdi-compositor.c | 649 |
1 files changed, 649 insertions, 0 deletions
diff --git a/src/win32/cairo-win32-gdi-compositor.c b/src/win32/cairo-win32-gdi-compositor.c new file mode 100755 index 000000000..c70b0f90a --- /dev/null +++ b/src/win32/cairo-win32-gdi-compositor.c @@ -0,0 +1,649 @@ +/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */ +/* cairo - a vector graphics library with display and print output + * + * Copyright © 2012 Intel Corporation + * + * 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 University of Southern + * California. + * + * Contributor(s): + * Carl D. Worth <cworth@cworth.org> + * Behdad Esfahbod <behdad@behdad.org> + * Chris Wilson <chris@chris-wilson.co.uk> + * Karl Tomlinson <karlt+@karlt.net>, Mozilla Corporation + */ + +/* The original X drawing API was very restrictive in what it could handle, + * pixel-aligned fill/blits are all that map into Cairo's drawing model. + */ + +#include "cairoint.h" + +#include "cairo-win32-private.h" + +#include "cairo-boxes-private.h" +#include "cairo-clip-inline.h" +#include "cairo-compositor-private.h" +#include "cairo-image-surface-private.h" +#include "cairo-pattern-private.h" +#include "cairo-region-private.h" +#include "cairo-surface-inline.h" +#include "cairo-surface-offset-private.h" + +#if !defined(AC_SRC_OVER) +#define AC_SRC_OVER 0x00 +#pragma pack(1) +typedef struct { + BYTE BlendOp; + BYTE BlendFlags; + BYTE SourceConstantAlpha; + BYTE AlphaFormat; +}BLENDFUNCTION; +#pragma pack() +#endif + +/* for compatibility with VC++ 6 */ +#ifndef AC_SRC_ALPHA +#define AC_SRC_ALPHA 0x01 +#endif + +#define PELS_72DPI ((LONG)(72. / 0.0254)) + +/* the low-level interface */ + +struct fill_box { + HDC dc; + HBRUSH brush; +}; + +static cairo_bool_t fill_box (cairo_box_t *box, void *closure) +{ + struct fill_box *fb = closure; + RECT rect; + + rect.left = _cairo_fixed_integer_part (box->p1.x); + rect.top = _cairo_fixed_integer_part (box->p1.y); + rect.right = _cairo_fixed_integer_part (box->p2.x); + rect.bottom = _cairo_fixed_integer_part (box->p2.y); + + TRACE ((stderr, "%s\n", __FUNCTION__)); + return FillRect (fb->dc, &rect, fb->brush); +} + +struct check_box { + cairo_rectangle_int_t limit; + int tx, ty; +}; + +struct copy_box { + cairo_rectangle_int_t limit; + int tx, ty; + HDC dst, src; + BLENDFUNCTION bf; + cairo_win32_alpha_blend_func_t alpha_blend; +}; + +static cairo_bool_t copy_box (cairo_box_t *box, void *closure) +{ + const struct copy_box *cb = closure; + int x = _cairo_fixed_integer_part (box->p1.x); + int y = _cairo_fixed_integer_part (box->p1.y); + int width = _cairo_fixed_integer_part (box->p2.x - box->p1.x); + int height = _cairo_fixed_integer_part (box->p2.y - box->p1.y); + + TRACE ((stderr, "%s\n", __FUNCTION__)); + return BitBlt (cb->dst, x, y, width, height, + cb->src, x + cb->tx, y + cb->ty, + SRCCOPY); +} + +static cairo_bool_t alpha_box (cairo_box_t *box, void *closure) +{ + const struct copy_box *cb = closure; + int x = _cairo_fixed_integer_part (box->p1.x); + int y = _cairo_fixed_integer_part (box->p1.y); + int width = _cairo_fixed_integer_part (box->p2.x - box->p1.x); + int height = _cairo_fixed_integer_part (box->p2.y - box->p1.y); + + TRACE ((stderr, "%s\n", __FUNCTION__)); + return cb->alpha_blend (cb->dst, x, y, width, height, + cb->src, x + cb->tx, y + cb->ty, width, height, + cb->bf); +} + +struct upload_box { + cairo_rectangle_int_t limit; + int tx, ty; + HDC dst; + BITMAPINFO bi; + void *data; +}; + +static cairo_bool_t upload_box (cairo_box_t *box, void *closure) +{ + const struct upload_box *cb = closure; + int x = _cairo_fixed_integer_part (box->p1.x); + int y = _cairo_fixed_integer_part (box->p1.y); + int width = _cairo_fixed_integer_part (box->p2.x - box->p1.x); + int height = _cairo_fixed_integer_part (box->p2.y - box->p1.y); + + TRACE ((stderr, "%s\n", __FUNCTION__)); + return StretchDIBits (cb->dst, x, y + height - 1, width, -height, + x + cb->tx, height - (y + cb->ty - 1), + width, -height, + cb->data, &cb->bi, + DIB_RGB_COLORS, SRCCOPY); +} + +/* the mid-level: converts boxes into drawing operations */ + +static COLORREF color_to_rgb(const cairo_color_t *c) +{ + return RGB (c->red_short >> 8, c->green_short >> 8, c->blue_short >> 8); +} + +static cairo_int_status_t +fill_boxes (cairo_win32_display_surface_t *dst, + const cairo_pattern_t *src, + cairo_boxes_t *boxes) +{ + const cairo_color_t *color = &((cairo_solid_pattern_t *) src)->color; + cairo_status_t status = CAIRO_STATUS_SUCCESS; + struct fill_box fb; + + TRACE ((stderr, "%s\n", __FUNCTION__)); + + fb.dc = dst->win32.dc; + fb.brush = CreateSolidBrush (color_to_rgb(color)); + if (!fb.brush) + return _cairo_win32_print_gdi_error (__FUNCTION__); + + if (! _cairo_boxes_for_each_box (boxes, fill_box, &fb)) + status = CAIRO_INT_STATUS_UNSUPPORTED; + + DeleteObject (fb.brush); + + return status; +} + +static cairo_bool_t source_contains_box (cairo_box_t *box, void *closure) +{ + struct check_box *data = closure; + + /* The box is pixel-aligned so the truncation is safe. */ + return + _cairo_fixed_integer_part (box->p1.x) + data->tx >= data->limit.x && + _cairo_fixed_integer_part (box->p1.y) + data->ty >= data->limit.y && + _cairo_fixed_integer_part (box->p2.x) + data->tx <= data->limit.x + data->limit.width && + _cairo_fixed_integer_part (box->p2.y) + data->ty <= data->limit.y + data->limit.height; +} + +static cairo_status_t +copy_boxes (cairo_win32_display_surface_t *dst, + const cairo_pattern_t *source, + cairo_boxes_t *boxes) +{ + const cairo_surface_pattern_t *pattern; + struct copy_box cb; + cairo_surface_t *surface; + cairo_status_t status; + + TRACE ((stderr, "%s\n", __FUNCTION__)); + + pattern = (const cairo_surface_pattern_t *) source; + surface = _cairo_surface_get_source (pattern->surface, &cb.limit); + if (surface->type == CAIRO_SURFACE_TYPE_IMAGE) { + surface = to_image_surface(surface)->parent; + if (surface == NULL) + return CAIRO_INT_STATUS_UNSUPPORTED; + } + if (surface->type != CAIRO_SURFACE_TYPE_WIN32) + return CAIRO_INT_STATUS_UNSUPPORTED; + + if (! _cairo_matrix_is_integer_translation (&source->matrix, + &cb.tx, &cb.ty)) + return CAIRO_INT_STATUS_UNSUPPORTED; + + cb.dst = dst->win32.dc; + cb.src = to_win32_surface(surface)->dc; + + /* First check that the data is entirely within the image */ + if (! _cairo_boxes_for_each_box (boxes, source_contains_box, &cb)) + return CAIRO_INT_STATUS_UNSUPPORTED; + + status = __cairo_surface_flush (surface, 0); + if (status) + return status; + + cb.tx += cb.limit.x; + cb.ty += cb.limit.y; + status = CAIRO_STATUS_SUCCESS; + if (! _cairo_boxes_for_each_box (boxes, copy_box, &cb)) + status = CAIRO_INT_STATUS_UNSUPPORTED; + + _cairo_win32_display_surface_discard_fallback (dst); + return status; +} + +static cairo_status_t +upload_boxes (cairo_win32_display_surface_t *dst, + const cairo_pattern_t *source, + cairo_boxes_t *boxes) +{ + const cairo_surface_pattern_t *pattern; + struct upload_box cb; + cairo_surface_t *surface; + cairo_image_surface_t *image; + void *image_extra; + cairo_status_t status; + + TRACE ((stderr, "%s\n", __FUNCTION__)); + + if ((dst->win32.flags & CAIRO_WIN32_SURFACE_CAN_STRETCHDIB) == 0) + return CAIRO_INT_STATUS_UNSUPPORTED; + + if (! _cairo_matrix_is_integer_translation (&source->matrix, + &cb.tx, &cb.ty)) + return CAIRO_INT_STATUS_UNSUPPORTED; + + pattern = (const cairo_surface_pattern_t *) source; + surface = _cairo_surface_get_source (pattern->surface, &cb.limit); + + /* First check that the data is entirely within the image */ + if (! _cairo_boxes_for_each_box (boxes, source_contains_box, &cb)) + return CAIRO_INT_STATUS_UNSUPPORTED; + + if (surface->type != CAIRO_SURFACE_TYPE_IMAGE) { + status = _cairo_surface_acquire_source_image (surface, + &image, &image_extra); + if (status) + return status; + } else + image = to_image_surface(surface); + + status = CAIRO_INT_STATUS_UNSUPPORTED; + if (!(image->format == CAIRO_FORMAT_ARGB32 || + image->format == CAIRO_FORMAT_RGB24)) + goto err; + if (image->stride != 4*image->width) + goto err; + + cb.dst = dst->win32.dc; + cb.data = image->data; + + cb.bi.bmiHeader.biSize = sizeof (BITMAPINFOHEADER); + cb.bi.bmiHeader.biWidth = image->width; + cb.bi.bmiHeader.biHeight = -image->height; + cb.bi.bmiHeader.biSizeImage = 0; + cb.bi.bmiHeader.biXPelsPerMeter = PELS_72DPI; + cb.bi.bmiHeader.biYPelsPerMeter = PELS_72DPI; + cb.bi.bmiHeader.biPlanes = 1; + cb.bi.bmiHeader.biBitCount = 32; + cb.bi.bmiHeader.biCompression = BI_RGB; + cb.bi.bmiHeader.biClrUsed = 0; + cb.bi.bmiHeader.biClrImportant = 0; + + cb.tx += cb.limit.x; + cb.ty += cb.limit.y; + status = CAIRO_STATUS_SUCCESS; + if (! _cairo_boxes_for_each_box (boxes, upload_box, &cb)) + status = CAIRO_INT_STATUS_UNSUPPORTED; + + _cairo_win32_display_surface_discard_fallback (dst); +err: + if (&image->base != surface) + _cairo_surface_release_source_image (surface, image, image_extra); + + return status; +} + +static cairo_status_t +alpha_blend_boxes (cairo_win32_display_surface_t *dst, + const cairo_pattern_t *source, + cairo_boxes_t *boxes, + uint8_t alpha) +{ + const cairo_surface_pattern_t *pattern; + struct copy_box cb; + cairo_surface_t *surface; + cairo_win32_display_surface_t *src; + cairo_status_t status; + + TRACE ((stderr, "%s\n", __FUNCTION__)); + if (source->type != CAIRO_PATTERN_TYPE_SURFACE) + return CAIRO_INT_STATUS_UNSUPPORTED; + + pattern = (const cairo_surface_pattern_t *) source; + surface = _cairo_surface_get_source (pattern->surface, &cb.limit); + if (surface->type == CAIRO_SURFACE_TYPE_IMAGE) { + surface = to_image_surface(surface)->parent; + if (surface == NULL) + return CAIRO_INT_STATUS_UNSUPPORTED; + } + if (surface->type != CAIRO_SURFACE_TYPE_WIN32) + return CAIRO_INT_STATUS_UNSUPPORTED; + + if (! _cairo_matrix_is_integer_translation (&source->matrix, + &cb.tx, &cb.ty)) + return CAIRO_INT_STATUS_UNSUPPORTED; + + src = to_win32_display_surface (surface); + cb.dst = dst->win32.dc; + cb.src = src->win32.dc; + + /* First check that the data is entirely within the image */ + if (! _cairo_boxes_for_each_box (boxes, source_contains_box, &cb)) + return CAIRO_INT_STATUS_UNSUPPORTED; + + status = __cairo_surface_flush (&src->win32.base, 0); + if (status) + return status; + + cb.bf.BlendOp = AC_SRC_OVER; + cb.bf.BlendFlags = 0; + cb.bf.SourceConstantAlpha = alpha; + cb.bf.AlphaFormat = (src->win32.format == CAIRO_FORMAT_ARGB32) ? AC_SRC_ALPHA : 0; + cb.alpha_blend = to_win32_device(dst->win32.base.device)->alpha_blend; + + cb.tx += cb.limit.x; + cb.ty += cb.limit.y; + status = CAIRO_STATUS_SUCCESS; + if (! _cairo_boxes_for_each_box (boxes, alpha_box, &cb)) + status = CAIRO_INT_STATUS_UNSUPPORTED; + + _cairo_win32_display_surface_discard_fallback (dst); + return status; +} + +static cairo_bool_t +can_alpha_blend (cairo_win32_display_surface_t *dst) +{ + if ((dst->win32.flags & CAIRO_WIN32_SURFACE_CAN_ALPHABLEND) == 0) + return FALSE; + + return to_win32_device(dst->win32.base.device)->alpha_blend != NULL; +} + +static cairo_status_t +draw_boxes (cairo_composite_rectangles_t *composite, + cairo_boxes_t *boxes) +{ + cairo_win32_display_surface_t *dst = to_win32_display_surface(composite->surface); + cairo_operator_t op = composite->op; + const cairo_pattern_t *src = &composite->source_pattern.base; + cairo_int_status_t status; + + TRACE ((stderr, "%s\n", __FUNCTION__)); + if (boxes->num_boxes == 0 && composite->is_bounded) + return CAIRO_STATUS_SUCCESS; + + if (!boxes->is_pixel_aligned) + return CAIRO_INT_STATUS_UNSUPPORTED; + + if (op == CAIRO_OPERATOR_CLEAR) + op = CAIRO_OPERATOR_SOURCE; + + if (op == CAIRO_OPERATOR_OVER && + _cairo_pattern_is_opaque (src, &composite->bounded)) + op = CAIRO_OPERATOR_SOURCE; + + if (dst->win32.base.is_clear && + (op == CAIRO_OPERATOR_OVER || op == CAIRO_OPERATOR_ADD)) + op = CAIRO_OPERATOR_SOURCE; + + if (op == CAIRO_OPERATOR_SOURCE) { + status = CAIRO_INT_STATUS_UNSUPPORTED; + if (src->type == CAIRO_PATTERN_TYPE_SURFACE) { + status = copy_boxes (dst, src, boxes); + if (status == CAIRO_INT_STATUS_UNSUPPORTED) + status = upload_boxes (dst, src, boxes); + } else if (src->type == CAIRO_PATTERN_TYPE_SOLID) { + status = fill_boxes (dst, src, boxes); + } + return status; + } + + if (op == CAIRO_OPERATOR_OVER && can_alpha_blend (dst)) + return alpha_blend_boxes (dst, src, boxes, 255); + + return CAIRO_INT_STATUS_UNSUPPORTED; +} + +static cairo_status_t +opacity_boxes (cairo_composite_rectangles_t *composite, + cairo_boxes_t *boxes) +{ + cairo_win32_display_surface_t *dst = to_win32_display_surface(composite->surface); + cairo_operator_t op = composite->op; + const cairo_pattern_t *src = &composite->source_pattern.base; + + TRACE ((stderr, "%s\n", __FUNCTION__)); + if (composite->mask_pattern.base.type != CAIRO_PATTERN_TYPE_SOLID) + return CAIRO_INT_STATUS_UNSUPPORTED; + + if (boxes->num_boxes == 0 && composite->is_bounded) + return CAIRO_STATUS_SUCCESS; + + if (!boxes->is_pixel_aligned) + return CAIRO_INT_STATUS_UNSUPPORTED; + + if (op != CAIRO_OPERATOR_OVER) + return CAIRO_INT_STATUS_UNSUPPORTED; + + if (!can_alpha_blend (dst)) + return CAIRO_INT_STATUS_UNSUPPORTED; + + return alpha_blend_boxes (dst, src, boxes, + composite->mask_pattern.solid.color.alpha_short >> 8); +} + +/* high-level compositor interface */ + +static cairo_bool_t check_blit (cairo_composite_rectangles_t *composite) +{ + cairo_win32_display_surface_t *dst; + + if (composite->clip->path) + return FALSE; + + dst = to_win32_display_surface (composite->surface); + if (dst->fallback) + return FALSE; + + if (dst->win32.format != CAIRO_FORMAT_RGB24) + return FALSE; + + if (dst->win32.flags & CAIRO_WIN32_SURFACE_CAN_BITBLT) + return TRUE; + + return dst->image == NULL; +} + +static cairo_int_status_t +_cairo_win32_gdi_compositor_paint (const cairo_compositor_t *compositor, + cairo_composite_rectangles_t *composite) +{ + cairo_int_status_t status = CAIRO_INT_STATUS_UNSUPPORTED; + + if (check_blit (composite)) { + cairo_boxes_t boxes; + + TRACE ((stderr, "%s\n", __FUNCTION__)); + _cairo_clip_steal_boxes (composite->clip, &boxes); + status = draw_boxes (composite, &boxes); + _cairo_clip_unsteal_boxes (composite->clip, &boxes); + } + + return status; +} + +static cairo_int_status_t +_cairo_win32_gdi_compositor_mask (const cairo_compositor_t *compositor, + cairo_composite_rectangles_t *composite) +{ + cairo_int_status_t status = CAIRO_INT_STATUS_UNSUPPORTED; + + if (check_blit (composite)) { + cairo_boxes_t boxes; + + TRACE ((stderr, "%s\n", __FUNCTION__)); + _cairo_clip_steal_boxes (composite->clip, &boxes); + status = opacity_boxes (composite, &boxes); + _cairo_clip_unsteal_boxes (composite->clip, &boxes); + } + + return status; +} + +static cairo_int_status_t +_cairo_win32_gdi_compositor_stroke (const cairo_compositor_t *compositor, + cairo_composite_rectangles_t *composite, + const cairo_path_fixed_t *path, + const cairo_stroke_style_t *style, + const cairo_matrix_t *ctm, + const cairo_matrix_t *ctm_inverse, + double tolerance, + cairo_antialias_t antialias) +{ + cairo_int_status_t status; + + status = CAIRO_INT_STATUS_UNSUPPORTED; + if (check_blit (composite) && + _cairo_path_fixed_stroke_is_rectilinear (path)) { + cairo_boxes_t boxes; + + TRACE ((stderr, "%s\n", __FUNCTION__)); + _cairo_boxes_init_with_clip (&boxes, composite->clip); + status = _cairo_path_fixed_stroke_rectilinear_to_boxes (path, + style, + ctm, + antialias, + &boxes); + if (likely (status == CAIRO_INT_STATUS_SUCCESS)) + status = draw_boxes (composite, &boxes); + _cairo_boxes_fini (&boxes); + } + + return status; +} + +static cairo_int_status_t +_cairo_win32_gdi_compositor_fill (const cairo_compositor_t *compositor, + cairo_composite_rectangles_t *composite, + const cairo_path_fixed_t *path, + cairo_fill_rule_t fill_rule, + double tolerance, + cairo_antialias_t antialias) +{ + cairo_int_status_t status; + + status = CAIRO_INT_STATUS_UNSUPPORTED; + if (check_blit (composite) && + _cairo_path_fixed_fill_is_rectilinear (path)) { + cairo_boxes_t boxes; + + TRACE ((stderr, "%s\n", __FUNCTION__)); + _cairo_boxes_init_with_clip (&boxes, composite->clip); + status = _cairo_path_fixed_fill_rectilinear_to_boxes (path, + fill_rule, + antialias, + &boxes); + if (likely (status == CAIRO_INT_STATUS_SUCCESS)) + status = draw_boxes (composite, &boxes); + _cairo_boxes_fini (&boxes); + } + + return status; +} + +static cairo_bool_t check_glyphs (cairo_composite_rectangles_t *composite, + cairo_scaled_font_t *scaled_font) +{ + if (! _cairo_clip_is_region (composite->clip)) + return FALSE; + + if (cairo_scaled_font_get_type (scaled_font) != CAIRO_FONT_TYPE_WIN32) + return FALSE; + + if (! _cairo_pattern_is_opaque_solid (&composite->source_pattern.base)) + return FALSE; + + return (composite->op == CAIRO_OPERATOR_CLEAR || + composite->op == CAIRO_OPERATOR_SOURCE || + composite->op == CAIRO_OPERATOR_OVER); +} + +static cairo_int_status_t +_cairo_win32_gdi_compositor_glyphs (const cairo_compositor_t *compositor, + cairo_composite_rectangles_t*composite, + cairo_scaled_font_t *scaled_font, + cairo_glyph_t *glyphs, + int num_glyphs, + cairo_bool_t overlap) +{ + cairo_int_status_t status; + + status = CAIRO_INT_STATUS_UNSUPPORTED; + if (check_blit (composite) && check_glyphs (composite, scaled_font)) { + cairo_win32_display_surface_t *dst = to_win32_display_surface (composite->surface); + + TRACE ((stderr, "%s\n", __FUNCTION__)); + status = _cairo_win32_display_surface_set_clip(dst, composite->clip); + if (status) + return status; + + status = _cairo_win32_surface_emit_glyphs (&dst->win32, + &composite->source_pattern.base, + glyphs, + num_glyphs, + scaled_font, + TRUE); + + _cairo_win32_display_surface_unset_clip (dst); + } + + return status; +} + +const cairo_compositor_t * +_cairo_win32_gdi_compositor_get (void) +{ + static cairo_compositor_t compositor; + + if (compositor.delegate == NULL) { + compositor.delegate = &_cairo_fallback_compositor; + + compositor.paint = _cairo_win32_gdi_compositor_paint; + compositor.mask = _cairo_win32_gdi_compositor_mask; + compositor.fill = _cairo_win32_gdi_compositor_fill; + compositor.stroke = _cairo_win32_gdi_compositor_stroke; + compositor.glyphs = _cairo_win32_gdi_compositor_glyphs; + } + + return &compositor; +} |