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Diffstat (limited to 'Build/source/libs/cairo/cairo-src/src/cairo-beos-surface.cpp')
-rw-r--r-- | Build/source/libs/cairo/cairo-src/src/cairo-beos-surface.cpp | 984 |
1 files changed, 0 insertions, 984 deletions
diff --git a/Build/source/libs/cairo/cairo-src/src/cairo-beos-surface.cpp b/Build/source/libs/cairo/cairo-src/src/cairo-beos-surface.cpp deleted file mode 100644 index c97641685fc..00000000000 --- a/Build/source/libs/cairo/cairo-src/src/cairo-beos-surface.cpp +++ /dev/null @@ -1,984 +0,0 @@ -/* vim:set ts=8 sw=4 noet cin: */ -/* cairo - a vector graphics library with display and print output - * - * Copyright © 2005 Christian Biesinger <cbiesinger@web.de> - * - * 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 Christian Biesinger - * <cbiesinger@web.de> - * - * Contributor(s): - */ - -// This is a C++ file in order to use the C++ BeOS API - -#include "cairoint.h" - -#include "cairo-beos.h" - -#include "cairo-error-private.h" -#include "cairo-image-surface-inline.h" - -#include <new> - -#include <Bitmap.h> -#include <Region.h> -#if 0 -#include <DirectWindow.h> -#endif -#include <Screen.h> -#include <Window.h> -#include <Locker.h> - -/** - * SECTION:beos-surface - * @Title: BeOS Surfaces - * @Short_Description: BeOS surface support - * @See_Also: #cairo_surface_t - * - * The BeOS surface is used to render cairo graphics to BeOS views - * and bitmaps. - **/ - -#define CAIRO_INT_STATUS_SUCCESS (cairo_int_status_t)(CAIRO_STATUS_SUCCESS) - -struct cairo_beos_surface_t { - cairo_surface_t base; - - cairo_region_t *clip_region; - - BView* view; - - /* - * A view is either attached to a bitmap, a window, or unattached. - * If it is attached to a window, we can copy data out of it using BScreen. - * If it is attached to a bitmap, we can read the bitmap data. - * If it is not attached, it doesn't draw anything, we need not bother. - * - * Since there doesn't seem to be a way to get the bitmap from a view if it - * is attached to one, we have to use a special surface creation function. - */ - - BBitmap* bitmap; - - // If true, surface and view should be deleted when this surface is - // destroyed - bool owns_bitmap_view; -}; - -class AutoLockView { - public: - AutoLockView(BView* view) : mView(view) { - mOK = mView->LockLooper(); - } - - ~AutoLockView() { - if (mOK) - mView->UnlockLooper(); - } - - operator bool() { - return mOK; - } - - private: - BView* mView; - bool mOK; -}; - -static cairo_surface_t * -_cairo_beos_surface_create_internal (BView* view, - BBitmap* bmp, - bool owns_bitmap_view = false); - -static inline BRect -_cairo_rectangle_to_brect (const cairo_rectangle_int_t* rect) -{ - // A BRect is one pixel wider than you'd think - return BRect (rect->x, rect->y, - rect->x + rect->width - 1, - rect->y + rect->height - 1); -} - -static inline cairo_rectangle_int_t -_brect_to_cairo_rectangle (const BRect &rect) -{ - cairo_rectangle_int_t retval; - retval.x = floor (rect.left); - retval.y = floor (rect.top); - retval.width = ceil (rect.right) - retval.x + 1; - retval.height = ceil (rect.bottom) - rectval.y + 1; - return retval; -} - -static inline rgb_color -_cairo_color_to_be_color (const cairo_color_t *color) -{ - // This factor ensures a uniform distribution of numbers - const float factor = 256 - 1e-5; - // Using doubles to have non-premultiplied colors - rgb_color be_color = { uint8(color->red * factor), - uint8(color->green * factor), - uint8(color->blue * factor), - uint8(color->alpha * factor) }; - - return be_color; -} - -enum ViewCopyStatus { - OK, - NOT_VISIBLE, // The view or the interest rect is not visible on screen - ERROR // The view was visible, but the rect could not be copied. Probably OOM -}; - -/** - * _cairo_beos_view_to_bitmap: - * @bitmap: [out] The resulting bitmap. - * @rect: [out] The rectangle that was copied, in the view's coordinate system - * @interestRect: If non-null, only this part of the view will be copied (view's coord system). - * - * Gets the contents of the view as a BBitmap*. Caller must delete the bitmap. - **/ -static ViewCopyStatus -_cairo_beos_view_to_bitmap (BView* view, - BBitmap** bitmap, - BRect* rect = NULL, - const BRect* interestRect = NULL) -{ - *bitmap = NULL; - - BWindow* wnd = view->Window(); - // If we have no window, can't do anything - if (!wnd) - return NOT_VISIBLE; - - view->Sync(); - wnd->Sync(); - -#if 0 - // Is it a direct window? - BDirectWindow* directWnd = dynamic_cast<BDirectWindow*>(wnd); - if (directWnd) { - // WRITEME - } -#endif - - // Is it visible? If so, we can copy the content off the screen - if (wnd->IsHidden()) - return NOT_VISIBLE; - - BRect rectToCopy(view->Bounds()); - if (interestRect) - rectToCopy = rectToCopy & *interestRect; - - if (!rectToCopy.IsValid()) - return NOT_VISIBLE; - - BScreen screen(wnd); - BRect screenRect(view->ConvertToScreen(rectToCopy)); - screenRect = screenRect & screen.Frame(); - - if (!screen.IsValid()) - return NOT_VISIBLE; - - if (rect) - *rect = view->ConvertFromScreen(screenRect); - - if (screen.GetBitmap(bitmap, false, &screenRect) == B_OK) - return OK; - - return ERROR; -} - -static void -unpremultiply_bgra (unsigned char* data, - int width, - int height, - int stride, - unsigned char* retdata) -{ - unsigned char* end = data + stride * height; - for (unsigned char* in = data, *out = retdata; - in < end; - in += stride, out += stride) - { - for (int i = 0; i < width; i ++) { - uint8_t *b = &out[4*i]; - uint32_t pixel; - uint8_t alpha; - - memcpy (&pixel, &data[4*i], sizeof (uint32_t)); - alpha = pixel & 0xff; - if (alpha == 0) { - b[0] = b[1] = b[2] = b[3] = 0; - } else { - b[0] = (((pixel >> 24) & 0xff) * 255 + alpha / 2) / alpha; - b[1] = (((pixel >> 16) & 0xff) * 255 + alpha / 2) / alpha; - b[2] = (((pixel >> 8) & 0xff) * 255 + alpha / 2) / alpha; - b[3] = alpha; - } - } - } -} - -static inline int -multiply_alpha (int alpha, int color) -{ - int temp = (alpha * color) + 0x80; - return ((temp + (temp >> 8)) >> 8); -} - -static unsigned char* -premultiply_bgra (unsigned char* data, - int width, - int height, - int stride) -{ - uint8_t * retdata = reinterpret_cast<unsigned char*>(_cairo_malloc_ab(height, stride)); - if (!retdata) - return NULL; - - uint8_t * end = data + stride * height; - for (uint8_t * in = data, *out = retdata; - in < end; - in += stride, out += stride) - { - for (int i = 0; i < width; i ++) { - uint8_t *base = &in[4*i]; - uint8_t alpha = base[3]; - uint32_t p; - - if (alpha == 0) { - p = 0; - } else { - uint8_t blue = base[0]; - uint8_t green = base[1]; - uint8_t red = base[2]; - - if (alpha != 0xff) { - blue = multiply_alpha (alpha, blue); - green = multiply_alpha (alpha, green); - red = multiply_alpha (alpha, red); - } - p = (alpha << 0) | (red << 8) | (green << 16) | (blue << 24); - } - memcpy (&out[4*i], &p, sizeof (uint32_t)); - } - } - return retdata; -} - -static cairo_int_status_t -_cairo_beos_surface_set_clip_region (cairo_beos_surface_t *surface, - cairo_region_t *region) -{ - cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>( - abstract_surface); - AutoLockView locker(surface->view); - assert (locker); - - if (region == surface->clip_region) - return CAIRO_INT_STATUS_SUCCESS; - - cairo_region_destroy (surface->clip_region); - surface->clip_region = cairo_region_reference (region); - - if (region == NULL) { - // No clipping - surface->view->ConstrainClippingRegion(NULL); - return CAIRO_INT_STATUS_SUCCESS; - } - - int count = cairo_region_num_rectangles (region); - BRegion bregion; - for (int i = 0; i < count; ++i) { - cairo_rectangle_int_t rect; - - cairo_region_get_rectangle (region, i, &rect); - // Have to subtract one, because for pixman, the second coordinate - // lies outside the rectangle. - bregion.Include (_cairo_rectangle_to_brect (&rect)); - } - surface->view->ConstrainClippingRegion(&bregion); - return CAIRO_INT_STATUS_SUCCESS; -} - - -/** - * _cairo_beos_bitmap_to_surface: - * - * Returns an addrefed image surface for a BBitmap. The bitmap need not outlive - * the surface. - **/ -static cairo_image_surface_t* -_cairo_beos_bitmap_to_surface (BBitmap* bitmap) -{ - color_space format = bitmap->ColorSpace(); - if (format != B_RGB32 && format != B_RGBA32) { - BBitmap bmp(bitmap->Bounds(), B_RGB32, true); - BView view(bitmap->Bounds(), "Cairo bitmap drawing view", - B_FOLLOW_ALL_SIDES, 0); - bmp.AddChild(&view); - - view.LockLooper(); - - view.DrawBitmap(bitmap, BPoint(0.0, 0.0)); - view.Sync(); - - cairo_image_surface_t* imgsurf = _cairo_beos_bitmap_to_surface(&bmp); - - view.UnlockLooper(); - bmp.RemoveChild(&view); - return imgsurf; - } - - cairo_format_t cformat = format == B_RGB32 ? - CAIRO_FORMAT_RGB24 : CAIRO_FORMAT_ARGB32; - - BRect bounds(bitmap->Bounds()); - unsigned char* bits = reinterpret_cast<unsigned char*>(bitmap->Bits()); - int width = bounds.IntegerWidth() + 1; - int height = bounds.IntegerHeight() + 1; - unsigned char* premultiplied; - if (cformat == CAIRO_FORMAT_ARGB32) { - premultiplied = premultiply_bgra (bits, width, height, - bitmap->BytesPerRow()); - } else { - premultiplied = reinterpret_cast<unsigned char*>( - _cairo_malloc_ab(bitmap->BytesPerRow(), height)); - if (premultiplied) - memcpy(premultiplied, bits, bitmap->BytesPerRow() * height); - } - if (!premultiplied) - return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY)); - - cairo_image_surface_t* surf = reinterpret_cast<cairo_image_surface_t*> - (cairo_image_surface_create_for_data(premultiplied, - cformat, - width, - height, - bitmap->BytesPerRow())); - if (surf->base.status) - free(premultiplied); - else - _cairo_image_surface_assume_ownership_of_data(surf); - return surf; -} - -/** - * _cairo_image_surface_to_bitmap: - * - * Converts an image surface to a BBitmap. The return value must be freed with - * delete. - **/ -static BBitmap* -_cairo_image_surface_to_bitmap (cairo_image_surface_t* surface) -{ - BRect size(0.0, 0.0, surface->width - 1, surface->height - 1); - switch (surface->format) { - case CAIRO_FORMAT_ARGB32: { - BBitmap* data = new BBitmap(size, B_RGBA32); - unpremultiply_bgra (surface->data, - surface->width, - surface->height, - surface->stride, - reinterpret_cast<unsigned char*>(data->Bits())); - return data; - } - case CAIRO_FORMAT_RGB24: { - BBitmap* data = new BBitmap(size, B_RGB32); - memcpy(data->Bits(), surface->data, surface->height * surface->stride); - return data; - } - default: - assert(0); - return NULL; - } -} - -/** - * _cairo_op_to_be_op: - * - * Converts a cairo drawing operator to a beos drawing_mode. Returns true if - * the operator could be converted, false otherwise. - **/ -static bool -_cairo_op_to_be_op (cairo_operator_t cairo_op, - drawing_mode* beos_op) -{ - switch (cairo_op) { - case CAIRO_OPERATOR_SOURCE: - *beos_op = B_OP_COPY; - return true; - case CAIRO_OPERATOR_OVER: - *beos_op = B_OP_ALPHA; - return true; - - case CAIRO_OPERATOR_ADD: - // Does not actually work - // XXX This is a fundamental compositing operator, it has to work! -#if 1 - return false; -#else - *beos_op = B_OP_ADD; - return true; -#endif - - case CAIRO_OPERATOR_CLEAR: - // Does not map to B_OP_ERASE - it replaces the dest with the low - // color, instead of transparency; could be done by setting low - // color appropriately. - - case CAIRO_OPERATOR_IN: - case CAIRO_OPERATOR_OUT: - case CAIRO_OPERATOR_ATOP: - - case CAIRO_OPERATOR_DEST: - case CAIRO_OPERATOR_DEST_OVER: - case CAIRO_OPERATOR_DEST_IN: - case CAIRO_OPERATOR_DEST_OUT: - case CAIRO_OPERATOR_DEST_ATOP: - - case CAIRO_OPERATOR_XOR: - case CAIRO_OPERATOR_SATURATE: - - default: - return false; - } -} - -static cairo_surface_t * -_cairo_beos_surface_create_similar (void *abstract_surface, - cairo_content_t content, - int width, - int height) -{ - cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>( - abstract_surface); - - if (width <= 0) - width = 1; - if (height <= 0) - height = 1; - - BRect rect(0.0, 0.0, width - 1, height - 1); - BBitmap* bmp; - switch (content) { - case CAIRO_CONTENT_ALPHA: - return NULL; - case CAIRO_CONTENT_COLOR_ALPHA: - bmp = new BBitmap(rect, B_RGBA32, true); - break; - case CAIRO_CONTENT_COLOR: - // Match the color depth - if (surface->bitmap) { - color_space space = surface->bitmap->ColorSpace(); - // No alpha was requested -> make sure not to return - // a surface with alpha - if (space == B_RGBA32) - space = B_RGB32; - if (space == B_RGBA15) - space = B_RGB15; - bmp = new BBitmap(rect, space, true); - } else { - BScreen scr(surface->view->Window()); - color_space space = B_RGB32; - if (scr.IsValid()) - space = scr.ColorSpace(); - bmp = new BBitmap(rect, space, true); - } - break; - default: - ASSERT_NOT_REACHED; - return NULL; - } - BView* view = new BView(rect, "Cairo bitmap view", B_FOLLOW_ALL_SIDES, 0); - bmp->AddChild(view); - return _cairo_beos_surface_create_internal(view, bmp, true); -} - -static cairo_status_t -_cairo_beos_surface_finish (void *abstract_surface) -{ - cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>( - abstract_surface); - if (surface->owns_bitmap_view) { - if (surface->bitmap) - surface->bitmap->RemoveChild(surface->view); - - delete surface->view; - delete surface->bitmap; - - surface->view = NULL; - surface->bitmap = NULL; - } - - cairo_region_destroy (surface->clip_region); - - return CAIRO_STATUS_SUCCESS; -} - -static cairo_status_t -_cairo_beos_surface_acquire_source_image (void *abstract_surface, - cairo_image_surface_t **image_out, - void **image_extra) -{ - cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>( - abstract_surface); - AutoLockView locker(surface->view); - if (!locker) - return CAIRO_STATUS_NO_MEMORY; /// XXX not exactly right, but what can we do? - - - surface->view->Sync(); - - if (surface->bitmap) { - *image_out = _cairo_beos_bitmap_to_surface (surface->bitmap); - if (unlikely ((*image_out)->base.status)) - return (*image_out)->base.status; - - *image_extra = NULL; - return CAIRO_STATUS_SUCCESS; - } - - BBitmap* bmp; - if (_cairo_beos_view_to_bitmap(surface->view, &bmp) != OK) - return CAIRO_STATUS_NO_MEMORY; /// XXX incorrect if the error was NOT_VISIBLE - - *image_out = _cairo_beos_bitmap_to_surface (bmp); - if (unlikely ((*image_out)->base.status)) { - delete bmp; - return (*image_out)->base.status; - } - *image_extra = bmp; - - return CAIRO_STATUS_SUCCESS; -} - -static void -_cairo_beos_surface_release_source_image (void *abstract_surface, - cairo_image_surface_t *image, - void *image_extra) -{ - cairo_surface_destroy (&image->base); - - if (image_extra != NULL) { - BBitmap* bmp = static_cast<BBitmap*>(image_extra); - delete bmp; - } -} - -static cairo_status_t -_cairo_beos_surface_acquire_dest_image (void *abstract_surface, - cairo_rectangle_int_t *interest_rect, - cairo_image_surface_t **image_out, - cairo_rectangle_int_t *image_rect, - void **image_extra) -{ - cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>( - abstract_surface); - - AutoLockView locker(surface->view); - if (!locker) { - *image_out = NULL; - *image_extra = NULL; - return (cairo_status_t) CAIRO_INT_STATUS_NOTHING_TO_DO; - } - - if (surface->bitmap) { - surface->view->Sync(); - *image_out = _cairo_beos_bitmap_to_surface(surface->bitmap); - if (unlikely ((*image_out)->base.status)) - return (*image_out)->base.status; - - image_rect->x = 0; - image_rect->y = 0; - image_rect->width = (*image_out)->width; - image_rect->height = (*image_out)->height; - - *image_extra = NULL; - return CAIRO_STATUS_SUCCESS; - } - - BRect b_interest_rect (_cairo_rectangle_to_brect (interest_rect)); - - BRect rect; - BBitmap* bitmap; - ViewCopyStatus status = _cairo_beos_view_to_bitmap(surface->view, &bitmap, - &rect, &b_interest_rect); - if (status == NOT_VISIBLE) { - *image_out = NULL; - *image_extra = NULL; - return CAIRO_STATUS_SUCCESS; - } - if (status == ERROR) - return CAIRO_STATUS_NO_MEMORY; - - *image_rect = _brect_to_cairo_rectangle(rect); - *image_out = _cairo_beos_bitmap_to_surface(bitmap); - delete bitmap; - if (unlikely ((*image_out)->base.status)) - return (*image_out)->base.status; - - *image_extra = NULL; - - return CAIRO_STATUS_SUCCESS; -} - - -static void -_cairo_beos_surface_release_dest_image (void *abstract_surface, - cairo_rectangle_int_t *intersect_rect, - cairo_image_surface_t *image, - cairo_rectangle_int_t *image_rect, - void *image_extra) -{ - cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>( - abstract_surface); - - AutoLockView locker(surface->view); - if (!locker) - return; - - BBitmap* bitmap_to_draw = _cairo_image_surface_to_bitmap(image); - surface->view->PushState(); - - surface->view->SetDrawingMode(B_OP_COPY); - - surface->view->DrawBitmap (bitmap_to_draw, - _cairo_rectangle_to_brect (image_rect)); - - surface->view->PopState(); - - delete bitmap_to_draw; - cairo_surface_destroy(&image->base); -} - -static cairo_int_status_t -_cairo_beos_surface_composite (cairo_operator_t op, - cairo_pattern_t *src, - cairo_pattern_t *mask, - void *dst, - int src_x, - int src_y, - int mask_x, - int mask_y, - int dst_x, - int dst_y, - unsigned int width, - unsigned int height, - cairo_region_t *clip_region) -{ - cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>( - dst); - cairo_int_status_t status; - AutoLockView locker(surface->view); - if (!locker) - return CAIRO_INT_STATUS_SUCCESS; - - drawing_mode mode; - if (!_cairo_op_to_be_op(op, &mode)) - return CAIRO_INT_STATUS_UNSUPPORTED; - - // XXX Masks are not yet supported - if (mask) - return CAIRO_INT_STATUS_UNSUPPORTED; - - // XXX should eventually support the others - if (src->type != CAIRO_PATTERN_TYPE_SURFACE || - src->extend != CAIRO_EXTEND_NONE) - { - return CAIRO_INT_STATUS_UNSUPPORTED; - } - - // Can we maybe support other matrices as well? (scale? if the filter is right) - int itx, ity; - if (!_cairo_matrix_is_integer_translation(&src->matrix, &itx, &ity)) - return CAIRO_INT_STATUS_UNSUPPORTED; - - status = _cairo_beos_surface_set_clip_region (surface, clip_region); - if (unlikely (status)) - return status; - - BRect srcRect(src_x + itx, - src_y + ity, - src_x + itx + width - 1, - src_y + ity + height - 1); - BRect dstRect(dst_x, dst_y, dst_x + width - 1, dst_y + height - 1); - - cairo_surface_t* src_surface = reinterpret_cast<cairo_surface_pattern_t*>(src)-> - surface; - - // Get a bitmap - BBitmap* bmp = NULL; - bool free_bmp = false; - if (_cairo_surface_is_image(src_surface)) { - cairo_image_surface_t* img_surface = - reinterpret_cast<cairo_image_surface_t*>(src_surface); - - bmp = _cairo_image_surface_to_bitmap(img_surface); - free_bmp = true; - } else if (src_surface->backend == surface->base.backend) { - cairo_beos_surface_t *beos_surface = - reinterpret_cast<cairo_beos_surface_t*>(src_surface); - if (beos_surface->bitmap) { - AutoLockView locker(beos_surface->view); - if (locker) - beos_surface->view->Sync(); - bmp = beos_surface->bitmap; - } else { - _cairo_beos_view_to_bitmap(surface->view, &bmp); - free_bmp = true; - } - } - - if (!bmp) - return CAIRO_INT_STATUS_UNSUPPORTED; - - // So, BeOS seems to screw up painting an opaque bitmap onto a - // translucent one (it makes them partly transparent). Just return - // unsupported. - if (bmp->ColorSpace() == B_RGB32 && surface->bitmap && - surface->bitmap->ColorSpace() == B_RGBA32 && - (mode == B_OP_COPY || mode == B_OP_ALPHA)) - { - if (free_bmp) - delete bmp; - return CAIRO_INT_STATUS_UNSUPPORTED; - } - - // Draw it on screen. - surface->view->PushState(); - - // If our image rect is only a subrect of the desired size, and we - // aren't using B_OP_ALPHA, then we need to fill the rect first. - if (mode == B_OP_COPY && !bmp->Bounds().Contains(srcRect)) { - rgb_color black = { 0, 0, 0, 0 }; - - surface->view->SetDrawingMode(mode); - surface->view->SetHighColor(black); - surface->view->FillRect(dstRect); - } - - if (mode == B_OP_ALPHA && bmp->ColorSpace() == B_RGB32) { - mode = B_OP_COPY; - } - surface->view->SetDrawingMode(mode); - - if (surface->bitmap && surface->bitmap->ColorSpace() == B_RGBA32) - surface->view->SetBlendingMode(B_PIXEL_ALPHA, B_ALPHA_COMPOSITE); - else - surface->view->SetBlendingMode(B_PIXEL_ALPHA, B_ALPHA_OVERLAY); - - surface->view->DrawBitmap(bmp, srcRect, dstRect); - - surface->view->PopState(); - - if (free_bmp) - delete bmp; - - return CAIRO_INT_STATUS_SUCCESS; -} - - -static cairo_int_status_t -_cairo_beos_surface_fill_rectangles (void *abstract_surface, - cairo_operator_t op, - const cairo_color_t *color, - cairo_rectangle_int_t *rects, - int num_rects, - cairo_region_t *clip_region) -{ - cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>( - abstract_surface); - cairo_int_status_t status; - - if (num_rects <= 0) - return CAIRO_INT_STATUS_SUCCESS; - - AutoLockView locker(surface->view); - if (!locker) - return CAIRO_INT_STATUS_SUCCESS; - - drawing_mode mode; - if (!_cairo_op_to_be_op(op, &mode)) - return CAIRO_INT_STATUS_UNSUPPORTED; - - status = _cairo_beos_surface_set_clip_region (surface, clip_region); - if (unlikely (status)) - return status; - - rgb_color be_color = _cairo_color_to_be_color(color); - - if (mode == B_OP_ALPHA && be_color.alpha == 0xFF) - mode = B_OP_COPY; - - // For CAIRO_OPERATOR_SOURCE, cairo expects us to use the premultiplied - // color info. This is only relevant when drawing into an rgb24 buffer - // (as for others, we can convert when asked for the image) - if (mode == B_OP_COPY && be_color.alpha != 0xFF && - (!surface->bitmap || surface->bitmap->ColorSpace() != B_RGBA32)) - { - be_color.red = color->red_short >> 8; - be_color.green = color->green_short >> 8; - be_color.blue = color->blue_short >> 8; - } - - surface->view->PushState(); - - surface->view->SetDrawingMode(mode); - surface->view->SetHighColor(be_color); - if (surface->bitmap && surface->bitmap->ColorSpace() == B_RGBA32) - surface->view->SetBlendingMode(B_CONSTANT_ALPHA, B_ALPHA_COMPOSITE); - else - surface->view->SetBlendingMode(B_CONSTANT_ALPHA, B_ALPHA_OVERLAY); - - for (int i = 0; i < num_rects; ++i) - surface->view->FillRect (_cairo_rectangle_to_brect (&rects[i])); - - surface->view->PopState(); - - return CAIRO_INT_STATUS_SUCCESS; -} - -static cairo_bool_t -_cairo_beos_surface_get_extents (void *abstract_surface, - cairo_rectangle_int_t *rectangle) -{ - cairo_beos_surface_t *surface = reinterpret_cast<cairo_beos_surface_t*>( - abstract_surface); - AutoLockView locker(surface->view); - if (!locker) - return FALSE; - - *rectangle = _brect_to_cairo_rectangle (surface->view->Bounds()); - return TRUE; -} - -static const struct _cairo_surface_backend cairo_beos_surface_backend = { - CAIRO_SURFACE_TYPE_BEOS, - _cairo_beos_surface_create_similar, - _cairo_beos_surface_finish, - _cairo_beos_surface_acquire_source_image, - _cairo_beos_surface_release_source_image, - _cairo_beos_surface_acquire_dest_image, - _cairo_beos_surface_release_dest_image, - NULL, /* clone_similar */ - _cairo_beos_surface_composite, /* composite */ - _cairo_beos_surface_fill_rectangles, - NULL, /* composite_trapezoids */ - NULL, /* create_span_renderer */ - NULL, /* check_span_renderer */ - NULL, /* copy_page */ - NULL, /* show_page */ - _cairo_beos_surface_get_extents, - NULL, /* old_show_glyphs */ - NULL, /* get_font_options */ - NULL, /* flush */ - NULL, /* mark_dirty_rectangle */ - NULL, /* scaled_font_fini */ - NULL, /* scaled_glyph_fini */ - - NULL, /* paint */ - NULL, /* mask */ - NULL, /* stroke */ - NULL, /* fill */ - NULL /* show_glyphs */ -}; - -static cairo_surface_t * -_cairo_beos_surface_create_internal (BView* view, - BBitmap* bmp, - bool owns_bitmap_view) -{ - // Must use malloc, because cairo code will use free() on the surface - cairo_beos_surface_t *surface = static_cast<cairo_beos_surface_t*>( - malloc(sizeof(cairo_beos_surface_t))); - if (surface == NULL) { - _cairo_error (CAIRO_STATUS_NO_MEMORY); - return const_cast<cairo_surface_t*>(&_cairo_surface_nil); - } - - cairo_content_t content = CAIRO_CONTENT_COLOR; - if (bmp && (bmp->ColorSpace() == B_RGBA32 || bmp->ColorSpace() == B_RGBA15)) - content = CAIRO_CONTENT_COLOR_ALPHA; - _cairo_surface_init (&surface->base, - &cairo_beos_surface_backend, - NULL, /* device */ - content); - - surface->view = view; - surface->bitmap = bmp; - surface->owns_bitmap_view = owns_bitmap_view; - - surface->clip_region = NULL; - - return &surface->base; -} - -/** - * cairo_beos_surface_create: - * @view: The view to draw on - * - * Creates a Cairo surface that draws onto a BeOS BView. - * The caller must ensure that the view does not get deleted before the surface. - * If the view is attached to a bitmap rather than an on-screen window, use - * cairo_beos_surface_create_for_bitmap() instead of this function. - * - * Since: TBD - **/ -cairo_surface_t * -cairo_beos_surface_create (BView* view) -{ - return cairo_beos_surface_create_for_bitmap(view, NULL); -} - -/** - * cairo_beos_surface_create_for_bitmap: - * @view: The view to draw on - * @bmp: The bitmap to which the view is attached - * - * Creates a Cairo surface that draws onto a BeOS BView which is attached to a - * BBitmap. - * The caller must ensure that the view and the bitmap do not get deleted - * before the surface. - * - * For views that draw to a bitmap (as opposed to a screen), use this function - * rather than cairo_beos_surface_create(). Not using this function WILL lead to - * incorrect behaviour. - * - * For now, only views that draw to the entire area of bmp are supported. - * The view must already be attached to the bitmap. - * - * Since: TBD - **/ -cairo_surface_t * -cairo_beos_surface_create_for_bitmap (BView* view, - BBitmap* bmp) -{ - return _cairo_beos_surface_create_internal(view, bmp); -} |