mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-31 14:15:30 +00:00
219 lines
6.9 KiB
C++
219 lines
6.9 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* 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/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is Oracle Corporation code.
|
|
*
|
|
* The Initial Developer of the Original Code is Oracle Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 2005
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Stuart Parmenter <pavlov@pavlov.net>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#include "prmem.h"
|
|
|
|
#include "gfxImageSurface.h"
|
|
|
|
#include "cairo.h"
|
|
|
|
gfxImageSurface::gfxImageSurface()
|
|
: mSize(0, 0),
|
|
mOwnsData(PR_FALSE),
|
|
mFormat(ImageFormatUnknown),
|
|
mStride(0)
|
|
{
|
|
}
|
|
|
|
void
|
|
gfxImageSurface::InitFromSurface(cairo_surface_t *csurf)
|
|
{
|
|
mSize.width = cairo_image_surface_get_width(csurf);
|
|
mSize.height = cairo_image_surface_get_height(csurf);
|
|
mData = cairo_image_surface_get_data(csurf);
|
|
mFormat = (gfxImageFormat) cairo_image_surface_get_format(csurf);
|
|
mOwnsData = PR_FALSE;
|
|
mStride = cairo_image_surface_get_stride(csurf);
|
|
|
|
Init(csurf, PR_TRUE);
|
|
}
|
|
|
|
gfxImageSurface::gfxImageSurface(unsigned char *aData, const gfxIntSize& aSize,
|
|
long aStride, gfxImageFormat aFormat)
|
|
: mSize(aSize)
|
|
, mOwnsData(PR_FALSE)
|
|
, mData(aData)
|
|
, mFormat(aFormat)
|
|
, mStride(aStride)
|
|
{
|
|
if (!CheckSurfaceSize(aSize))
|
|
return;
|
|
|
|
cairo_surface_t *surface =
|
|
cairo_image_surface_create_for_data((unsigned char*)mData,
|
|
(cairo_format_t)mFormat,
|
|
mSize.width,
|
|
mSize.height,
|
|
mStride);
|
|
|
|
// cairo_image_surface_create_for_data can return a 'null' surface
|
|
// in out of memory conditions. The gfxASurface::Init call checks
|
|
// the surface it receives to see if there is an error with the
|
|
// surface and handles it appropriately. That is why there is
|
|
// no check here.
|
|
Init(surface);
|
|
}
|
|
|
|
gfxImageSurface::gfxImageSurface(const gfxIntSize& size, gfxImageFormat format) :
|
|
mSize(size), mOwnsData(PR_FALSE), mData(nsnull), mFormat(format)
|
|
{
|
|
mStride = ComputeStride();
|
|
|
|
if (!CheckSurfaceSize(size))
|
|
return;
|
|
|
|
// if we have a zero-sized surface, just leave mData nsnull
|
|
if (mSize.height * mStride > 0) {
|
|
|
|
// Use the fallible allocator here
|
|
mData = (unsigned char *) moz_malloc(mSize.height * mStride);
|
|
if (!mData)
|
|
return;
|
|
memset(mData, 0, mSize.height * mStride);
|
|
}
|
|
|
|
mOwnsData = PR_TRUE;
|
|
|
|
cairo_surface_t *surface =
|
|
cairo_image_surface_create_for_data((unsigned char*)mData,
|
|
(cairo_format_t)format,
|
|
mSize.width,
|
|
mSize.height,
|
|
mStride);
|
|
|
|
Init(surface);
|
|
|
|
RecordMemoryUsed(mSize.height * ComputeStride() + sizeof(gfxImageSurface));
|
|
}
|
|
|
|
gfxImageSurface::gfxImageSurface(cairo_surface_t *csurf)
|
|
{
|
|
mSize.width = cairo_image_surface_get_width(csurf);
|
|
mSize.height = cairo_image_surface_get_height(csurf);
|
|
mData = cairo_image_surface_get_data(csurf);
|
|
mFormat = (gfxImageFormat) cairo_image_surface_get_format(csurf);
|
|
mOwnsData = PR_FALSE;
|
|
mStride = cairo_image_surface_get_stride(csurf);
|
|
|
|
Init(csurf, PR_TRUE);
|
|
}
|
|
|
|
gfxImageSurface::~gfxImageSurface()
|
|
{
|
|
if (mOwnsData)
|
|
free(mData);
|
|
}
|
|
|
|
long
|
|
gfxImageSurface::ComputeStride() const
|
|
{
|
|
long stride;
|
|
|
|
if (mFormat == ImageFormatARGB32)
|
|
stride = mSize.width * 4;
|
|
else if (mFormat == ImageFormatRGB24)
|
|
stride = mSize.width * 4;
|
|
else if (mFormat == ImageFormatRGB16_565)
|
|
stride = mSize.width * 2;
|
|
else if (mFormat == ImageFormatA8)
|
|
stride = mSize.width;
|
|
else if (mFormat == ImageFormatA1) {
|
|
stride = (mSize.width + 7) / 8;
|
|
} else {
|
|
NS_WARNING("Unknown format specified to gfxImageSurface!");
|
|
stride = mSize.width * 4;
|
|
}
|
|
|
|
stride = ((stride + 3) / 4) * 4;
|
|
|
|
return stride;
|
|
}
|
|
|
|
PRBool
|
|
gfxImageSurface::CopyFrom(gfxImageSurface *other)
|
|
{
|
|
if (other->mSize != mSize)
|
|
{
|
|
return PR_FALSE;
|
|
}
|
|
|
|
if (other->mFormat != mFormat &&
|
|
!(other->mFormat == ImageFormatARGB32 && mFormat == ImageFormatRGB24) &&
|
|
!(other->mFormat == ImageFormatRGB24 && mFormat == ImageFormatARGB32))
|
|
{
|
|
return PR_FALSE;
|
|
}
|
|
|
|
if (other->mStride == mStride) {
|
|
memcpy (mData, other->mData, mStride * mSize.height);
|
|
} else {
|
|
int lineSize = PR_MIN(other->mStride, mStride);
|
|
for (int i = 0; i < mSize.height; i++) {
|
|
unsigned char *src = other->mData + other->mStride * i;
|
|
unsigned char *dst = mData + mStride * i;
|
|
|
|
memcpy (dst, src, lineSize);
|
|
}
|
|
}
|
|
|
|
return PR_TRUE;
|
|
}
|
|
|
|
already_AddRefed<gfxSubimageSurface>
|
|
gfxImageSurface::GetSubimage(const gfxRect& aRect)
|
|
{
|
|
gfxRect r(aRect);
|
|
r.Round();
|
|
unsigned char* subData = Data() +
|
|
(Stride() * (int)r.Y()) +
|
|
(int)r.X() * gfxASurface::BytePerPixelFromFormat(Format());
|
|
|
|
nsRefPtr<gfxSubimageSurface> image =
|
|
new gfxSubimageSurface(this, subData,
|
|
gfxIntSize((int)r.Width(), (int)r.Height()));
|
|
|
|
return image.forget().get();
|
|
}
|
|
|
|
gfxSubimageSurface::gfxSubimageSurface(gfxImageSurface* aParent,
|
|
unsigned char* aData,
|
|
const gfxIntSize& aSize)
|
|
: gfxImageSurface(aData, aSize, aParent->Stride(), aParent->Format())
|
|
, mParent(aParent)
|
|
{
|
|
}
|